Peete iter ee i tiesto vateoetes, qeiseetatees® eee Petiatrtettossess Prsrte arti erie eee yt) serene opermseree Pesbeesetcriee ost u ( \ = F) 1 ; ' ty < » 4 ‘ * - : . 2 ‘bd - e - f . : ‘ + A 1 = ! ‘ rf i ' Lk ~ . ~ ) . , . TRANSACTIONS OF THE Keo os A TapsOrc br..T Y. OF EDINBURGH. VOL. XVII.—PART IL. CONTAINING THE MAKERSTOUN MAGNETICAL AND METEOROLOGICAL OBSERVATIONS FOR 1841 anp 1842. EDINBURGH : PUBLISHED BY ROBERT GRANT & SON, 82 PRINCES STREET; AND T. CADELL, STRAND, LONDON. MDCCCXLYV. . PRINTED BY NEILL AND CO., OLD FISHMARKET, EDINBURGH. ; OBSERVATIONS MAGNETISM AND METEOROLOGY, MAKERSTOUN IN SCOTLAND, IN THE OBSERVATORY OF GENERAL SIR T. M. BRISBANE, BART., G.C.B., G.C.H., D.C.L., LL.D., COR. MEM. INST. FR., PRES. R.S.E., F.R.S., F.R.A.S., H.M.RI.A., &. &. 1841 ann 1842. UNDER THE DIRECTION OF EK. RUSSELL, Esa., 1n 1841, AND or JOHN A. BROUN, Esa, rn 1842. THE WHOLE EDITED BY JOHN A. BROUN, Ese. EDINBURGH: PRINTED BY NEILL AND COMPANY. MDCCCXLYV. ay CONTENTS. PAGE PREFACE, s++seeserseeseesescesersecsesecsesarsereseesssescees /niele(t/s\sla’s)n\oie.s/sia\sialelaieio «(e+ \aie/s[\siin.s eine sb/s\einin)waleie/aiyia viele sie Vil InTRODUCTION— Description and Position of the Observatory,:----- Ian cA DERE COT CORC ORE ERE Te RCH SER er irnec ix Personal Establishment, «--+-------- cOgchonociong nooooDeneisadnbhoseoDbdn “datcorcensds] Batra lets saae x Maeneticat InstRUMENTS— Declinometer— Description of the Declinometer, «.-++.+-+++++..sserre+s eaten creme Ac dae Moje one epee xi Value of the Scale Divisions, ------+-+-+.++.-.++- afatoletetatate|clatelaletetelepatamisya\stelalNeislace cies siel erases Xii Reading for Magnetic Axis, ------.---- a oecrsteeinians Pare Sars ae ets oct ang cpltua naga aan a xiii Effect of Bifilar and Balance Magnets, «-++-++ssssssseseseeeteeeeeeeeeeeceeseeteseeeene Xiv Effect of Copper Ring, ----------- patodudsdgdde oud cogUtoASOOsonhqconuecdecnsocdalecnoDEe, bod XV Suspension Thread and its Torsion Force,.------+-++-++- aiarate (std Maya sata ctaler sc. ayatie'arciafaisreins xvi Values of = sie eaters alesis nel se nroTeetet ReCeibAcee aptib-tren alee bape Uoscd sa HAL RRM oer cise a xvi Facts relating to Suspension Threads,...-------+.-- dice ce PEC HORLGRSHE parE EET aT en eEe xvii Absolute Declination, «------se++++++.+++. cnoodoococodsboooauasaced Sgundcnonasscooboue riot xix Method of Observing, ------ Hebtelelc alatettaa cars eelselslsistesae Bua erat eisicrelsing SMR ales ae Xxili Bifilar Magnetometer— Description of the Instrument, -.....- sedate Este neeeate vs sist davigebouaiancinge maneegeceriae xxiii Constants for the Reduction of Observations after altering the Reading of the Torsion Circle, BN ARSE aiotete aletalolcejneateleiete; bin aptoaleinnelseiiats sepiemrectee SSORen eS wialaiaheVelaYe(eresessts XXV Adj ustments, -----+--- noodadossoond Rvereiaercisveretversie Retetete etal otet iste ate ototetelsialetelcletelsiotersicieleteteieiataisteteteietetats XXV Value of Scale Divisions, ------ gocanciosbonobc, Se eeeieei siclohe siatae woolen faeleaelseteisleiisloricte XXV1 Times of Vibration, ------ per beele aeatelecieless Poa eens Bergemann uaeeeas Mele ace aisais asia se:ne xxviii Mode of Observing and Reductions, -.-----+++++ss+seerecee dobdoudeanbondspanausencG.cEs XxIx Values of k and q,-+-+++++-++ peltletetatetal-feteleletat-eisielatetsisleleis(e/alsieielai-[> eiateeiale spoeed sonanoc S000 90) ae XXX Sources of error in determining the Temperature of the Magnet, --------------- XXX Absolute Horizontal Intensity, .---- Soconcecndosnee nial eisteieteis nismicisieieicis ois eli eee eee XxXxi Balance Magnetometer— Description of the Instrument,.----.-+-..:+s+ssseeseeees Sioled dulcis eli tnemtteeetettaien aisles Xxxii Value of Micrometer Divisions, ------- a reyetete tie ctareletote oiereistatctetetetefovaine snoe cObericeCeode Sonne XXXiii Deviation of Magnetic Axis from the line joining the Bisection Crosses, ------ XXXIV Times of Vibration in a Horizontal Plame,.--....+++-+ses-tsceneee sochae iene ge oteateciaabeine XXXV Times of Vibration in a Vertical Plane, aoa er aeiatueeestiare Malet Ce ince sates e blvieeabcivig xe teeta XXXVi Effect of other Magnets, Seventies Merselelestoleriateleetrs soracisaD nocagsadoougboronouns weASuHOneAs XXXVll Observations and Reductions, ----+++++++++-- Horiddooockbhoosr. aoc CepCoGanD nec ancane Aa XXXVii Values of k and ly trtit ree eneneacee cas ceeencesseseaesenssetaencnreneresterenesseeeseienenens XXXIX 1V CONTENTS. PaGE Observations for the Temperature Corrections— Method of Observation, Pafeicieielolern{ols.o\sisiajais wtatsieta/@ oieisia(eleiolete sie iais aisth ava aielclavdie’el=alelatscieta nietets alatetaiatete XXxX1X For the Bifilar Magnet, .++sseceerserereereeeeseeeeeeec ten enesaeseetsseeeseeeeeeeeeses ees xli For the Balance Magnet, aiajoleloiwicle seloletele\sisleyelaetaipielstatnlaie oteistetsictetetlatersia/sivie’s,«¢/oIn sisata stel aise etetetnieeteem xlii New Method of determining the Temperature Correction, --+++++++++++se+++s00+0+ xliv Inclinometer— Description of Instrument, and Method of Observing, -:-----++++++++04++e.eeeeee eee xlv Observations in different Azimuths, ---+-+--seeseereeceveceeeseecscncecceeertaneecners xlvi METEOROLOGICAL INSTRUMENTS. Barometer— Description of the Instruments used, -----+.+.+-+++-sssessesecesereesccnsrenseneeene ees xlvii Comparisons with the Royal Society’s Standard, -----+-+++++s+seeeesseeeeeeeeeeenees xlvii Thermometers— Positions of the Thermometers, aletciamsae me nideineten cc ecisialcio-deleloec mise eeisterentclelelans cise etree xlvii Corrections of the Thermometers to the Standard, «---+----++++++eseseeeeeees eens xlix Rain Gauges— Positions of the Gauges, Scie indie’ cie'ei a sisi ara lene’ a osetele ete tore ame ciel elalatoteiete ote tare ota niaitionslesole'e stein pasa eter xlix Anemometer— Description Of the Instruments, -----.-.e cesses eee eee cee ceenceestecceecceeen ese ccecerens l State of the Sky— Mode of Observation, --+---seeeseeesere cer eceree ese ceeeeeaeneeetes cease eseenseneenseeeses li General and Recapitulatory Remarks— StOVE, secceeeresereeueneeeeeeeeeerseretseeee tee ecteseene sas eceeenens ees seeneeaenaeararseeneeees li Clo, “s-+nis Anantee tenant na gestehoniaaekes canoes nee. taeueeeecieny oe degra Sune tam oar ii Time used, ---eeeceecescersencenececesceeseneceeeeneeteeerseenteneen es erereseerseenee see e rece li Times of Observations for each Instrument, --+---+-++eeceeeee reese see ee eter eee eeeees li Initials of Observers for each Hour on the Term-days, ---+-++++++eseeeee ere esee ee hii How to obtain the Absolute Declination from the Observations, ---+-+++++++++: lii Remarks on the Reductions and Abstracts, oGleista nietersrerete carinve vosiecs aialeeteieistaste io miataratorae lil MAGNETICAL OBSERVATIONS— DAILY OBSERVATIONS OF MAGNETOMETERS, <+ersssesseccereeeseceeneceeercesnccsteaes essen ecerecs ee 9 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, -+reeeceeececceeeneressccesceecstanecences snes ccees 99 EXTRA OBSERVATIONS OF MAGNETOMETERG, -++++++eerreteeeee cer eee cee eeeee eter eceeeecee eee cee eee ens 50 OBSERVATIONS OF MAGNETIC DIP, ---:+es+seeetesceeseencnereeeeeeencceeteesenen sre teerecseneeeren cas 62 OBSERVATION OF ABSOLUTE HLLORIZONTAL INTENSITY, --+++seeetee eet ertese reer erences eter cer senens 66 METEOROLOGICAL OBSERVATIONS— DAILY METEOROLOGICAL OBSERVATIONS, ssresssesesssceeceeescesececenaseeassnececrasesucercesecenas 68 TerM-Day AND EXTRA METEOROLOGICAL OBSERVATIONS, -<++cestersseceeeeeeereretesenseeeeeees 110 REMARKS ON THE WEATHER, eer-eeesecsseeceee essen eee eceeseneraeesesceateesesneesanecseesseesaaeeeens 118 ABSTRACTS OF THE RESULTS OF THE MAGNETICAL OBSERVATIONS— ABSTRACTS FOR THE MAGNETIC DECLINATION, corecereeeeeece secs eeeeeeeeseeneeseetanceseeeseneeneee 136 ABSTRACTS FOR THE HORIZONTAL FORCE, +++ereseeeeeseeeeseneeesnnnseeceeesesseeeesenaecnecen Fe tsaaas 140 CONTENTS. ¥ ABSTRACTS FOR THE VERTICAL Force, eiarevelevavetojevaitinte hele tyaiataheinte Mi ataiate alelnie avaterslatete sais Bintetaretaverotateratatstarorcterererate ae ABSTRACTS FOR DISTURBANCES, -----++ee+-++eeeceescecereecees seeconaugacde dosage SadnmcocecespacacogOnt 152 ABSTRACTS FOR THE MAGNETIC Dip, dieijscintcerneneae arots eioierereraisetare ateveharstetetateta rate nts) alarsinisielele cing ouletsicniseereicia 154 ABSTRACTS FOR THE ToTAL INTENSITY, via Ralelacera(tineletainisiaieie ciniete steiatel taiinintal piel aicate lasninheinintaneralehicistaiatal eresateleta 156 ABSTRACTS OF THE RESULTS OF THE METEOROLOGICAL OBSERVA- TIONS— ABSTRACTS FOR THE BAROMETER, ---+-+++++eee-eeee “ADHon ore ASKCasoaNDCOOUA osundouscnoned nletsleininaclaitie 158 ABSTRACTS FOR THE THERMOMETERS, -0re+eeeescccesccessecencccececcencccenececcnsoececssnaseseeees 161 ABSTRACTS FOR THE AQUEOUS VAPOUR IN THE ATMOSPHERE, --+-s+eeeeeeecsseeeeeseeccesecees 162 ABSTRACT FOR THE FORCE OF WIND, ---s+e::0-+: tes ceeccecs eee e ees ceceereescenscenenceeees sebesncde 164 ABSTRACT FOR THE QUANTITY OF CLOUDS, ---+20-ee:seseeneccseecscceces vec ccncsecsccrecs Sonnacanas 164 ABSTRACT FOR THE RAIN GAUGES, -+++eseeseeeeeere eens nooAnEAC metab yelstetsiatsletsise sjelnis)s/e(a/efelelcleleteisteyetsteia= 165 ERRATA. Introduction, page ix., foot-note, for simultaneous at read simultaneous observations at = — x., line 6, for Magnetomers read Magnetometers — — xxv., line 5, for cos 1+ read cos (v +8) Enter under No. 34, page xxxi. Introduction, the following :— The effect of the Declination magnet on the Bifilar magnet is zero; the effect of the Balance magnet N. pole BE. on the Bifilar magnet is—3:15 Sc. div. This correction has not been applied to the observations. Enter before Table 15, page xxxv. Introduction :-— The relative moments of the three magnets were determined by placing their centres successively on the same point at right angles to a spare magnet suspended in the Declinometer box and observing the deflections; the following are their ratios— Declination : Bifilar : Balance = 1-000 : 0:828 : 0:185. Introduction, page xxiv., line 16, and page xl., line 27, for K read k — — x\lvi., last line of Table 22, for 21 read 71 Sept. 264 23 1841, page 4, Balance Thermometer, for 5-13 read 51:3 Aug. 64 75 1842, — 58, for 29:43 read 129-43 Oct. 294 20 1841, — 74, transpose the observations under Max. and Min. July 274 20 1842, — 93, for 6°68 read 66'8 — 100, carry foot-note to page 101. Introduction, page lii., No. 79, for 24° read 23°. GENERAL Sir T. M. BrisBane takes this opportunity of acknowledging | the obligation which he feels himself under to Proressor Forsss, for his advice on the formation and continuance of the Makerstoun Observatory. MAKERSTOUN MAGNETIC OBSERVATORY... ezare 7. Royat soutrans.EainVol INTRODUCTION. § 1. DESCRIPTION OF THE OBSERVATORY, &c. 1. The Magnetic Observatory, Makerstoun, was erected in the beginning of 1841. The geographical co-ordinates are— Latitude, : 3 ; 4 55° O44! 45 N: Longitude, . 3 ; : 0h 10™ 3-55 W. Height of the cistern of the barometer above mean water at Berwick, 213 feet.* The Magnetic Observatory is situate nearly on the summit of a ridge, which occupies the left or northern bank of the Tweed ; being 540 feet distant from, and 80 feet above, that river. . The Astronomical Observatory is upon the highest part of the ridge, 140 feet due west of the Magnetic Observatory. 2. A fair horizon is seen from the Observatory hill, being bounded about 10 miles to the east by a slightly swelling ground, which to south-east seems to join the Cheviot Hills. The view is bounded about half-a-mile to south and south- west by a ridge, forming the right bank of the Tweed; about 500 feet to the south- west and north-west by masses of trees in the Makerstoun grounds ; and from 1 to 3 miles to north-west, north, and north-east, by an elevated ridge, which forms to some extent the northern boundary of the valley of the Tweed. From north, by the east to the south, the elevation of the horizon, with a slight exception, is under 2°; from north to north-west, increasing from 2° to 4° ; from north-west to south-west, the tops of the trees are elevated from 5° to 8°; and from south-west to south the elevation is under 4°. The highest point of the Cheviots, which is 2656 feet above the level of the sea, is about 18 miles to the ESE. 3. The Observatory Hill, it is believed, is composed of felspathic trap. The Tweed, immediately to the south, and for a mile to the east and west, passes through this rock. It does not appear on any part of the hill; but seems, as far as the * The height of a point in the Astronomical Observatory was obtained by connecting it with the levels made from Berwick to the opposite bank of the Tweed, for a projected railway from Berwick to Melrose. Barometrical observations at Holy Island and at Berwick by Sir T. M. Brispane, and at the Edinburgh Observatory by the late Professor HENDERSON, compared with simultaneous at Makerstoun, have verified the above determination. MAG. AND MET. OBS. VOL. I. c x INTRODUCTION. opening for a foundation to the Observatory would shew, to be covered with masses of rolled pebbles, and boulders of greywacke and trap. 4. The Observatory is rectangular in its plan, 40 by 20 feet internally. It is formed of wood; copper nails were used; and iron carefully excluded from every part of the structure. The pillars for the Magnetomers and Telescopes are of stone, from 22 inches to 19 inches in diameter, and placed upon excellent stone foundations, completely disconnected with the floor, or any part of the building. There are two windows to the south, with the door between ; and three to the north, which open like fold- ing doors. 5. By a reference to the plan and elevation, the following details will be un- derstood :— The dimensions of the principal apartment are, 40 feet long, 12 feet broad, and 12 feet high. The two ante-rooms are each 15 feet by 7. The instruments, &c., are indicated in the plan as follows :— D, The Declinometer. t, Its Reading Telescope. A, The Azimuth Circle and Transit. H, The Bifilar or Horizontal Force Magnetometer. v, Its Reading Telescope. P, A Pillar for a Collimator (not used). V, The Balance or Vertical Force Magnetometer. I, The Inclinometer. B, The Standard Barometer. W, Adie’s Anemometer. W’, The Wind Vane Dial-Plate. T, The Thermometer Case after January 22. 1842. T’, The Thermometer Case before January 22. 1842. C, The Mean Time Clock. S, The Copper Stove after Jan. 11. (?) 1842. S’, The Copper Stove before Jan. 11 (?) 1842. n s, The Astronomical Meridian. D t, The Magnetic Meridian. The two Vanes to the right in the elevation are those for the direction and force of wind ; the other two were added after 1842. § 2. PERSONAL ESTABLISHMENT, &c. 6. Mr RUSSELL was appointed by Sir THomas BRISBANE, in the spring of INTRODUCTION. xl 1841, to conduct the Observatory, and resigned in April 1842. Mr RUSSELL is, therefore, only responsible for the observations up till that period.* During term-days, Mr RussELL was assisted by Mr P. Avie of Edinburgh, Mr Hoee of Kelso, and myself. After the April term 1842, Mr Dons, teacher of Makerstoun parish school, replaced Mr RussELL in the term observations ; and after the term 1842, Mr CuisHoLM, teacher of Maxton parish school, replaced Mr ADIE. The Daily and Extra Observations, and Observations of Adjustment, till the end of April 1842, were made by Mr RussELL, assisted in some of the latter by me. MAGNETICAL INSTRUMENTS. § 3. DECLINOMETER. 7. The Declination Magnetometer was obtained from Gruss of Dublin. The Magnet is 15 inches long, Zths of an inch broad, and 4th inch in thickness. It fits into a stirrup, whose two eyes receive an axle-attached to the suspension thread. At the north extremity, it carries a scale divided on glass; at the other, about 12 inches distant (its focal length), a lens of 14 inch diameter. A marble slab cemented to the top of the Declinometer-Pillar, carries two copper tubes, which are connected at the top by a wooden tie, bearing the Torsion- Circle and Suspension Apparatus. The Suspension Thread, formed of sixteen fibres of untwisted silk, is enclosed by a glass tube; and the Magnet, with copper ring, for checking the vibrations, by a cylindrical box, with glass lids. There are two glazed apertures in the sides of the box, one to the north, where a small mirror throws light upon the glass scale, the other to the south between the Lens and the Reading Telescope. The Reading Telescope is fixed to its pier. By noting the coincidences of the Scale divisions with the vertical wire at the eye-glass of the telescope, the variations of the position of the freely suspended magnet are obtained. * Mr Russexx studied the methods of observing, &c., at Dublin, under Professor H. Luoyp, to whom he was also indebted for his attention to various difficulties which were subsequently met with. To Professor Lioyp I also owe my acknowledgments for his attention to several of my own com- munications. Professor Luoyp, at the desire of Sir THomas Brispanz, likewise examined the observations made by Mr Russext and by myself till October 1842. To Mr Arry, Sir Tuomas Brispane’s thanks, and my own, are due, for the facilities afforded me at the Royal Observatory, Greenwich, in April 1842, of acquiring a knowledge of the methods adopted there. I should not omit to mention my obligations to Lieut.-Col. Sazinz, and Professor Forzes, for their advice on some occasions. xu INTRODUCTION. 8. Between the Magnetometer and Telescope piers is the pier of the Theodolite, used for determinations of the Absolute Declination. The Theodolite is by TROUGHTON ; the circle is 15 inches in diameter, is divided to 5 minutes, and reads with the verniers to 5 seconds. There are three Verniers; by some accident, the circle has probably been slightly flattened on one side, as there the verniers enter rather too much upon the graduations. The error due to this, however, is small. The lines of collimation of the Theodolite and Reading Telescopes coincide when the middle wire of the former is made to coincide with the vertical wire of the latter. The circle is retained in the same position on its pier, but the telescope is removed, except when required for Observations of Absolute Declination. 9. Following are the determinations of the data requisite in reducing the ob- servations of the Declinometer. 10. Value of the Scale Divisions in angular measure. A scale of 300 divisions was used in 1841, and of 500 divisions afterwards. The Magnet having been fixed on blocks, the middle wire of the Theodolite Telescope was made to coincide with various scale divisions. At each coincidence, one vernier of the circle was read. TABLE 1.—Value of the Divisions of the Short Scale in the Declinometer during 1841. Scale Theodolite Scale Theodolite Value of 100 Division. Reading. Division. Reading. Scale Divisions. 113 113 113 a en ne ne eee STP srs The mean value of 1 Scale division is 0”6715. INTRODUCTION. Xi TABLE 2.—Value of the Divisions of the Long Scale in the Declinometer during 1842. Scale Theodolite Scale Division. Reading. Division. 140 4 51 30-0 240 150 4 44 47:5 250 160 4 38 5-0 260 170 4 31 20-0 270 180 4 24 37-5 280 190 4 17 55-0 290 200 4 11 12-5 300 210 4 4 30-0 310 220 3 57 47-5 320 230 3 51 5-0 330 240 3 44 22-5 340 250 3 37 40-0 350 260 3 30 57-5 360 Theod Reading. 3 3 3 3 3 3 3 4 2 2 2 2 2 2 The mean value of 1 Scale division is 06710. olite 32-5 Value of 100 Scale Divisions. ee ee a Ye) AT ST ST ST ST ST ST ST Ts 11. Determination of the point of the scale at the magnetic axis of the bar, or the zero of the scale. June 28. 1841. Magnet with short scale. The torsion having been removed from the suspension thread, and the Reading Telescope fixed temporarily, readings were made, the magnet being direct and also inverted (the scale and lens below the magnet). TABLE 3.—Reading of the Short Scale for the Magnetic Axis of the Declination Magnet. Position of Magnet. Direct Inverted Direct Inverted Direct Inverted Direct The mean reading for magnetic axis=149-3 Sc. div. 140-3 159-1 139-6 159-5 138-5 160-3 137-1 Scale Reading. 0 Mean of each alternate two 139-9 159-3 139-1 159-9 137-8 Reading for . | Magnetic Axis. 149-50 149-45 149-30 149-20 149-05 July 12 till 26. 1841. Effect of Bifilar and Balance Magnets (See Table 5), +0°3 Sc. div., corrected zero 149-0 Sc. div. July 27 till Dec. 28.1841. Effect of Bifilar and Balance Magnets (See Table 5), —0°3 Sc. div., corrected zero 149.6 Sc. div. MAG. AND MET. OBS., VOL. I. d XIV INTRODUCTION. TABLE 4.—Reading of the Long Scale for the Magnetic Axis of the Declination Magnet. First Series. Second Series. Third Series. Position of Mean of | Reading Mean of | Reading Mean of | Reading Magnet. Scale each for Scale each for Scale each for Reading. | alternate} Magnetic || Reading. | alternate] Magnetic || Reading. |alternate | Magnetic two. Axis. two. Axis, two. Axis. Inverted Direct 255-65 || 257-7 Inverted 239-4 | 255-10 : 254-75 || 252-5 257-4 | 254-95 Direct Dien W255-15 : 254-00 || 257-1 252-8 | 254-95 Inverted 237-9 | 255-25 : : 255-95 || 253-1 257-6 | 255-35 Direct 273-6 | 255-35 : : 255-25 || 258-1 Inverted 237-6 | 256-05 : 255-20 Direct Mean reading for magnetic axis, first series, 255°38 second series, 255°13 third series, 255:08 Mean of all the partial results, 255-21. Correction for effect of Bifilar and Balance Magnets (Table 5) +0°3 Se. div., adopted zero for 1842, 255°5 Se. div. 12. Corrections to be applied to the observed positions of the Magnet to obtain the true declination. 13. Effect of the Balance and Bifilar Magnets on the Declination Magnet. TABLE 5.—Effects of the Bifilar and Balance Magnets on the Declination Magnet. N. end of Magnet. Effect of Magnet. Declination Reading. : Bifilar. Balance. Bifilar. Balance. 143-30 141-38 142-57 144-47 143-07 141-28 Mean effect of Biflar magnet on Declination magnet N. pole W.= — 0:64 Se. div. A Coie ans tnemsies Balatice., :.... cces-sesn (d—d,). Reading == nde Corrected. Gees b, SD. S ” Se. Div. Se. Div. . Div. Se. Di Nov. cane Abassiel ree Bp a oe Se. Div Se. Div. 055) 34-97 | oo 7-72 | 154-20 | 149-21 114] 57-60 | 2763) 10.117] 154.69 | Ti'32 | 150-07 1 30] 78:05 | }7.4,| 10:85 | 153-86 | 11, | 150-99 148] 60-72 | 5.45| 10-06 | 154-25 | 1 4. | 151-18 2 6| 35-10 | 5545| 983 | 155-17 | 7) @, | 151-28 224| 57-80 | So4)| 12:05 | 156-28 | — 5775 | 151-30 245] 81-10 | 61 ¢5| 14:63 | 156-73 | 755 | 152-71 3 1] 59-50 | 55.55] 1288 | 156-56 | 14, | 154-43 318) 35-07 | 27 23| 11-96 | 157-05 | 71", | 155-13 | 3841 3 36| 57-55 |, 05| 13-55 | 157-09 | — ize | 155-64 3 52]| 81-35 | 55 99| 15-77 | 157-58 | 1 34 | 154-66 4 8] 59-05 | 55.09] 13-84 | 157-03 | “4. | 155-78 424) 35-25 | 37 49| 12:54 | 157-78 | "O75 | 155-77 4 41| 69-65 | 2200] 15-40 | 157-92 | ~ 5°03 | 155-67 5 4|| 34.65 13-14 | 158-49 | ~~ 155-31 5 20 Magnet |Away. | 266-39 | 158-76 Nov. 9 23 17|| Magnet Away. | 265-41 | 157-84 9 23 49] 33-65 9:17 | 156-90 149-65 10 0 8| 5912 | 3°47] 10-55 | 156-67 | — Ie, | 150-18 0 29] 80.60 | 7578) 11-78 | 156-33 | ~{'9¢ | 150-60 045] 61-85 | $879| 10:39 | 156.31 | — 3/34 | 150.92 1) 35-200) Cog) Cor | 155.668 17 |) 151-86 1 221) 58-90 | Fo 6q| 984 | 15587 | 7 69 | 152.62 1 37| 77-50 |-5¢°6)| 11-36 | 155-88 | ~\"4y | 15282 1 55| 56-60 | 5992) 9.93 | 15606 | —j'p5 | 153-13 211] 34-50 | 2752| 812 | 155-90 | — 10? | 153-11 228 61:35 | 5)°2| 10.38 | 156-20 | —j"an | 158-52 246| 983-50 | 5.40| 1243 | 156-59 | — i'r, | 153-78 3 3| 57-90 | 2°) 1084 | 156-79 | —1'7? | 152.51 3 20| 35-75 | 55°5,| 9:02 | 15683 | — 783 | 150-84 3 38] 58-65 | 5°9)| 10-14 | 156-47 | —) "40° | 152-76 Soe) rere Coy! 1385¢| Ue7-72! |T4%0| 15275 418} 36.25 | S072 | 10-20 | 157-76 | 755° | 151-65 4 43|| 68-30 9112.85 | iszo1 | 7° | 158.49 4 55 Magnet |Away. | 264-91 | 157-65 49. The mean of all the partial results is The mean of the partial results, November 9, is Q=0-0002979. » 10, is Q=0-0002915. Q=0°0002945. Correction for the expansion of the silver wires and brass grooved wheel is 0:000010 (No. 32.), whence the adopted value, g=9:000304. MAG. AND MET. OBS. VOL. I. xhi INTRODUCTION. TABLE 20.—Observations to determine the Temperature Correction for the Balance Magnet. rn Reacting a ae orl eee Bifilar. Guthacen empe- Reading |of Declino- opte eae oP He rature of of aetee reading | minus |——W— on Mean See Balance | '~%: Unifilar.| reduced |of Declino-|r (d —d,). Reading |Thermo- Magnet. —r d. meter. corrected. | meter. Gy ah. om. 7 We ° Se. Div. Se. Div. Se. Div. Se. Div. Se. Div. e Aug. 23 20 31] Magnet | Away.| 270-35] 161-48 21 54| 59-45 | 476-03| 159-51 | 158-36 125-30 | 53-3 ‘ 22 44) 46-70 | 322?) 469.02] 153-61 | 151-7 + ae | 136:34 | 54.0 Meee 23 11] 66-00 | 51°55 | 467-06] 152-44 | 150-20 | 4/55 | 134-62 | 54-8 | ~ 0002008 23 38] 90-00 | $0°9)| 465-47| 151-41 | 14863 | 955 | 135-56 | 55-7 | 000002 Aug. 24 0 17] 70-00 | ~~” | 462.53| 148-49 | 145.37 1420geiea7-1,| _ 7 COR 0 46} Magnet | Away. | 250-98} 145-63 1 28] 66.95 _| 459-13| 145-54 | 145-86] 136-57 | 60-1 2 1] 38:50 | 52°0?| 463-32] 149-00 | 149-57 TG on’ | 1aneeeel meme oe 2 29| 63-45 | “*""?| 464-33] 150-00 | 150-78 143:68:|-623al go oe 2 42} Magnet | Away.| 255-99| 149-76 3 O} 66-15 |, ...| 464-19] 149-91 | 150-18). , 145-28 | 63-8 b. 3 29] 87-00 | 50° | 464-08] 150-01 | 150-71 Ora | 155-87 | 64.4 ao 357] 62-90 | 9-".5| 466-53] 151-51 | 152.62 | “99, | 146-51 | 65-1 | ~ 0 ooo izag 4 28] 37-30 | 37°9.| 474-77| 158-42 | 159-99 | “9.94 | 147-32 | 65-8 ” econ 4 56| 69-15 | °°? | 470-58| 154-66 | 156.64 147-37 | 66-5 | —"" 5. 10 | Magnet | Away. | 262-89| 154-47 ; Aug. 31 22 25| Magnet | Away. | 260-23] 153-71 23 10} 60-95 | 1. ¢.| 461-86] 150-92 | 150-62] 949 | 123-47 | 62-9 23 34] 42-10 °| 458-34| 147-39 | 146-91 124-88 | 63-1 | —0-0000582 Sept. L © 0| Magnet | Away.| 250-82] 144-87 0 21| 64-15 453-52| 142-97 _| 120-09 | 63-9 0 38] 85-20 | *2°0)| 453.42| 143-28 Tory | 122:90)| EO" Coe eee 0 59} 66-25 | 90°). | 453-45] 143-15 19.05, |, 12872 | Gl To aogeaee 1 20) 43-20 | 5145 | 453-06] 142-48 059 |, 13444)| 689 | 0 cogneee 1 43) 64-85 | 5.25| 451-08] 141-09 0.56 | 142°78 | 65-0 “psoas 2 3| 90-55 ose 450-34] 140-91 Lonp.| 14030"); 6524) oo anagane 2 24] 65-40 ie 452-06] 141-93 ong | 22880): 65-45) Co opogeee 2 46] 80-70 | 5)'-,| 449-00] 139-83 Og | A ATTOS |: 65-64) © 6 cagae ee 3 10| 60-00 ‘| 447-49] 137-96 141-49 | 65-7 19-15 — 1-37 je — 0-0002329 3 35] 40-85 455-50] 144-60 122-78 | 65-9 Sel Beg ET he — 1-22 — 0.0000885 3 58| 64-70 455-93| 146-25 154-87 | 66-0 eo Ts OUn es — 0-35 d —0-0001071 4 18] 86-60 456-90| 147-57 ~ | 149-65 | 66-2 20-40 x —0-43 —0-0000533 4 41| 66-20 453-95 | 144-19 a. | 141-19 | 66-5 24.85 +0-35 — 0-0000326 5 6| 41-35 453-60| 144-19 16214 | 66-7 i 24.20 +0-95 ona + 0-0000893 5 29| 65-55 - | 460-84] 150-48 141-45 | 66-9 epee OL EA O-1Galer . + 0:0000288 5 49] 85-50 | 53°55] 467-10] 156-58 House | 180i) 07-05) 8 5 Gage 6 10| 62-00 472-23 | 160-84 130-62 | 67-0 6 46| Magnet | Away.| 260-07| 153-59 Sept. 1 23 8| Magnet | Away.| 251-32] 145-99 23 48] 65-90 466-17| 147-68 106-84 | 66-3 Sept. 2 0 6| 89-60 | 22°79! 467.63] 149-35 eT Adsl meow dma ~ | 22-65 2 — 0-36 — 0-0000726 0 22| 66-95 466-76 | 148-12 111-42 | 67-1 27-55 — 0-24 —0-0000732 0 39] 39-40 465-97 | 147-09 118-74 | 67-4 ; 24.20 | =? — 0.22 s Ce | —0-0000598 0 57| 63-60 - | 463-93] 145-27 115-37 | 67-7 ~ | 23-85 — 0-62 —0-0000958 1 18] 87-45 | 57°55 | 463-45] 145-41 pig | L201 TNCSIONES Gngozan 1 37| 66-25 oa Be 462-73] 144-53 9.99) 127-09), 683 1 jGgoioee 1 57] 41-60 | 5.°15| 465-04) 145-85 Tigey |) LP o0 OSG tet, aon igas 213} 65-00 | 72'5.] 463-26] 144-94 0.99 | 128:50 | 68-7 Ri canes 2 30} 83-15 | 5475 | 462-30] 144-20 0.23 | 125-73 | 68-9 a ncunere 2 50] 63-45 Ba 462-77| 144.44 ory |) 130044) 0905 puna as 3°10:| 40285 1) =" 465-88 | 146-78 : 122-56 | 69-0 — 0-28 ™ | —0-0000733 INTRODUCTION. xlni TABLE 20.—continued. ee ee Reading 5 ie Tempe- Reading of Declino-| w—w ae éttingen rature of of meter | sinus —q. Mean Time. ena *—v | Uniflar.| reduced r(d—d,).| Reading |Thermo- 5 =r d. corrected. | meter. Ah aaaiens ae a 2 rai Se. Div, een 69-0 ept. 2 3 28 465- 147-08 5 ‘ 3 45|| 87-75 | 3°72 | 466-23 147-89 | Ode | 120-54 | 69-0 | ~ Ob ononney 4 3]| 66-30 | 5,55) 467-04] 148-43 aa 125-39 | 69-2) © 6 goggsao 4 22]| 40-15 | 5. 99| 467-95] 149-25 | 9.54 | 140-27 | 69-4 | 9 ggoggag 4 44|| 65-15 | 53 99| 468-45) 150-01 | 9.5, | 137-49 | 69-5 | _ 9 oogg706 5 1]| 88:15 | 55.79| 469-22) 151-12} 3, 137-34 | 69-6 | 9 9991581 5 19|| 65-45 26-90 473-31| 154-10 40-14 123-61 | 69-7 —0-0000276 5 37|) 38-55 | 5545| 473-44| 154-37 | © 459 | 135-25 | 69-7 | ~ 9 ggoga3o 5 57|| 72-00 476-52 | 157-65 133-87 | 69-7 6 13 || Magnet | Away.| 272-00] 162-31 Nov. 12 22 55 || Magnet | Away.} 266-58] 159-61 ag 22 33-70) | o2.| 11-37 | 158-02 181-77 | 41-1 93 35|| 59-20 | 5°°0>) 10-72] 157-05 | 0a? | 181-38 | 41-2 | ~O nocnod 23 45|/ 80-10 | 55.49] 10-74) 157-02 | 9.74 | 182-78 | 41:3 | _ 9 9991398 23 57 || 57-80 | oo ao 8.56| 155-57 i Guad 184-66 | 41-5 | _ 9 990936 Nov.13 0 8] 35:00] 55.59| 7-50| 155-02 | "9.5, | 183-87 | 41-6 | — 9 oggg6i9 Ore sa OOo ae | 873) Lad-91"| Wa oq | 18469) | 41-7 | oaggaae 0 30]) 78-95 | o575| 8:99] 155-87 | _ 9.46 | 185-60 | 41-8 | 9 oggogi4 0 41|| 58-25 | 5595] 8-19] 155-53 | 4 49 | 184-63 | 41-9) _ 9 oggo7e4 Graal s7 00 on oak tol | 15:26. |) a0 f t80-40 | 4201 0c oaaaag 1 7|| 59-05 | {5 55] 6-84] 154-23 | 954 | 188-86 | 42:2) 9 goqgseo 1 20|| 74:35 | ja 95) 7-23) 154-34) 9 4g | 190-75 | 42-5 | 9 oaqgia8 P20 | oe al meio) ek 2 ag ae | 187-12) 427 |G Caniaas Pa ARON ST all 68 | Toles 72 | 1931T | 4204 aes 1 56]) 60-70 | 5, 95| 5:87] 153-36] 9.5 | 188-72 | 43-0 | _ 9 oggg9gs 2 7] 81-75 | o5.49| 7-58| 15456 | 9.36 | 188-16 | 43-3 | — 9 goq9999 BAB) AIBN oa en) 8:14) 136-28) 1 9 gy || SS-4G)) 49600 We ons 2 29]) 34:85 | 94.6,| 8:33) 155-58 | 9.6, | 18986 | 43-9 | 64 gagggeo 2 40|/ 59:50 | oi 59| 8:82) 155-41 | 9.6, | 193-12 | 441 | _ 4 oooggsa 2 50}) 81-00 | 93 9] 8:27) 154-25} 9.5. | 197-47 | 44:3 | 9 gagggq3 3 2] 58:00 | og 4s| 7:39] 153-92 | 9.5, | 196-79 | 44-7 | 9 goggi50 3 14) 23-55) 55 aa| 7-68) 154-42) 54, | 193-26 | 44-9 | 79 ooops 326) 55-00 | 5,5.) 4:59) 151-77 | _ 5.95 | 188-37 | 45-0 | 7 4 oooog18 337 || 84:25 | 3245) 2:84) 149-72 | 7 95g | 183-56 | 45-11 5 ooo 145a 545) Gl-1s)| 07, || O27] 148-14 | 74 5- | 179-40 | 45-5)! 6 aoooii7 Pea iesea0) | as ge). 208) 100-40 | oe | 178-46 | 45°77 6 coogi San AED aii) 2800) 15134 bats Gac| 178-75)) 458) | naggasa 4 21) 83:35'| ja og| o%3| 152-82 | 4 aq | 176-38 | 45-9 | 9 ogoagas 4 38] 36-45 | 3655| 5:71) 153-40 | 9 59 | 181-76 | 46-0 Aric 453) 73:30 | 30 g| 8-42) 155-52 | ~ 919 | 17582 | 46-0 | 5 Goagaas, | 5 18]| 34-90 10-54| 157-83 | 183-30 | 46-0 | ~~ | 5 30 || Magnet | Away.| 267-75] 160-90 1844. Jan. 27 0 16 || Magnet | Away.| 260-87] 157-22 1 9|| 35-47 zo| 12-08] 154-78 189-43 | 45-0 Poni toes 50°) 130%] taean |r or.|\ 189Nt.| dao i Toes b 1 36 || 38-05 | 57 '55| 13:59) 156-04 | 7 93g | 189-10 | 45-01 ~ 6 ooogsvg 1 49|| 64:37 | 57 47| 14-67] 156-73 page 189-54 1245-0) 6 gooo 2 1] 37-00 | 52o5| 14:21) 156-71 | 52g | 190-53 | 45-0 OF ae toe 2 V7 |) 68:05) Ge 55 |) 15-30) 157-01 | i 5 ga} 191-25 | 45-1) 7 6 Gggog11 2 32)/ 38-17 | 5. 43] 15-52] 157-86 | 190-43 | 45-1] | Baa enanyiet O21) S676) 2159-700] Meee 190-89 | 45.9 [7.0000 see 26-85 — 0-37 —0-0000557 xliv INTRODUCTION. TABLE 20—continued. Reading |of Declino- Bifilar. of meter rs Unifilar.| reduced .| Reading |Thermo- 0 =nde corrected. | meter. Gottingen rature of Mean Time. Balance Magnet. din Wb: “x0. co id Se. Div. Sc. Div. Se. Div. ° Jan. 27 3 2]| 38-95 . 159-27 : 190-35 | 45-3 63-70 159-90 B 190-12 | 45-5 36-35 160-12 i 190-47 | 45-6 68-55 160-87 j 188-42 | 45-6 38-25 : 160-96 186-50 | 45-7 62-55 89| 160-65 ‘eq | 187-44 | 45-8 35-85 : 160-89 : 188-42 | 45-9 65-25 : . 161-11 q 186-82 | 45-9 35-90 161-16 189-01 | 45-9 Magnet 160-84 — 0:0000766 — 0-:0000480 — 0-0000625 — 0-0000681 — 0-0000851 —0-0000853 — 0-0000954 — 0-0000650 3 3 3 4 4 4 5 5) 5 50. The means of the partial results on the different days were given weights depending on the formula, Number of partial results Mean of the squares of the partial results ménus the square of the mean Aug. 234—244 1843. Mean of the partial results g = 0:0000845 Weight= 49 Weight= Aree pat Septet: Sei Mads di... sae code ee bo) eee g = O'0000TGEY %... 2.222 = 79 Sept. 14— 28 ON ee ace cag cians ac eae rere g = (0 0000792 e .-n 22. = 425 Noy. 12*—134 A oe Measietide ware ener acento eae q = 0-0000620 | cisccs.:: = 320 Jan. 274 TSAR OWE io) aaaconueasteer ean he see g = 00000729" "S.J. = 1157 Whence the resulting value, g = 0-000073. 51. Having much doubt as to the accuracy and sufficiency of this method of determining the temperature correction, and feeling its insufficiency especially in the case of the balance magnet, where the time of vibration in a vertical plane is em- ployed, in whatever form the corrected observations be given, [attempted to deduce the temperature corrections from the usual daily observations in 1843 and 1844. For the methods adopted in deducing these results, I must refer to the paper cited, No. 44. It is enough to mention here the final results : For the bifilar magnet g = 0°000247 in parts of the whole horizontal force. This value has been used in correcting the Abstracts of Results at the end of this volume. For the balance magnet q = 7:90 micrometer divisions. As the observations for 1843 gave the same result for the balance magnet as those for 1844, independently of changes of adjustment and times of vibrations, the value of g = 7:90 Mic. div. has been applied in the abstracts of the observations. INTRODUCTION. xlv § 7. INCLINOMETER. 52. The Dip Instrument is by RoBInson of London. The vertical circle, 95 inches in diameter, is divided to 10’; and 1’ is estimated with the aid of lenses at- tached to the instrument. The horizontal circle, 6 inches in diameter, with a ver- nier, reads to 1’. There are two needles, marked No. 1 and No. 2, and one end of each needle is marked A, the other end, B. Till 1843, the instrument occupied the pillar I, in the plan, next to the decli- nometer, and it was necessary to remove the declination magnet during observations of dip. The reading of the horizontal circle, for the vertical circle in the magnetic meridian, was obtained with the aid of a horizontal needle carried on a pivot, whose arms rest on the Ys of the instrument. 53. The dipping needle is observed in four positions, with one end dipping, namely, the circle being in the meridian, with its graduated face east and west, the marked side of the needle being with the graduated face and from it; as each extremity of the needle is observed, there are thus eight readings obtained. The poles being changed, and the other end dipping, other eight readings are similarly obtained. The mean of the sixteen readings is taken for the dip. In this volume, the mean of each eight readings is given. In changing the poles, the needle was placed on a small wooden block having a hole to receive the axle, and received eight strokes on each face from two small magnets. The needle, No. 1, was generally used. The level of the agate planes was occasionally verified by means of a small level. This had to be done always with the door shut, as it is in observations ; the level varied with the door open. 54. Observations were made in different azimuths on April 18. and May 2. 1843, in order to determine the correction due to the vertical copper circle and to the axle of the needle. , and 7 being the inclinations observed in two planes, at right angles to each other, the true dip ¢is deduced by the formula cot? § = cot? 4 + cot? 7 The following tables contain the observations and results. In reading these observations, the circle was considered to be graduated from 0° to 180°, commencing with the right side of the horizontal diameter, counting down, and from the left side of the same diameter, counting up. MAG. AND MET. OBS. VOL. I. : m xlvi INTRODUCTION. TABLE 21.—Observations for Magnetic Dip in different Azimuths. B Dipping. A. Dipping. Limb E. Limb W. Limb E. Limb W. Face of Needle Face of Needle Face of Needle Face of Needle Azimuth. ° , ° ‘ ° , 69 39-5 |107 20-5 . . -5 | 110 29-0 71 38-5 |104 54:5 . 12: ‘0 | 108 31-0 98 3-0 | 78 31-5 . 78 19:0 | 97 54-0 104 54:5 | 71 19-0 69 69 70 73 77 82 87 92 97 101 104 106 TABLE 22.—Magnetic Dip deduced from the Observations in Table 23. Azimuths. ns n. 6. 30 and 120 73 30-69 80 25-62 71 11-0 60 --- 150 80 27-69 73 23-19 ile 5:9 0 71 21-8 0 and 90 hil Sebo ke 89 46-50 71 20-9 15 --- 105 71 47-19 85 0-75 71 11-9 30 --- 120 73 18-56 80 27-94 4 ~ 251 45 +. 135 76 27-12 76 20-12 71 6-5 60 .-. 150 80 25-25 73 20-75 71 2-6 (Om eeGs 84 56-87 71 47-87 21 11-9 In the first series, giving the observation at Azimuth 0° a value 6 = 71° 12’.9; Correction for Needle No.1 = — 89 in the second series, @6€=71° 9.3; Correction for Needle No.1 = — 11'8 In the Abstracts of Magnetic Dip the observations have been corrected by — 12’. INTRODUCTION. xlvii METEOROLOGICAL INSTRUMENTS. § 8. BAROMETER. 55. A Mountain Barometer, by ADIE & Son, was used from July 1841 till January 1842. The scale is engraved on the brass tube, and reads, with a vernier, to 0.002 in.; the mercury in the limb of the cistern is adjusted at each observation to a constant zero point ; the tube is about 0.15 inch diameter. 56. After January 1. 1842, a Standard Barometer, by Newman, was placed in the Observatory. The diameter of the boiled tube is 0.552 in. ; the scale is attached to a brass rod, terminating in an ivory point, which, at each observation, is made to meet its image in the mercury of the cistern. The vernier professes to read to 0-002 in., and 0001 may be estimated ; but the graduation is so inexact, as to give changes in error from 0-002 to 0-003 in. The barometer by NEWMAN was compared indirectly with the standard of the Royal Society, London, by means of one belonging to the DukE of ARGYLE. The comparisons were made in London. TABLE 23.—Comparisons of the Duke of Argyle’s Standard Barometer with the Standard Barometer of the Royal Society of London. Royal Society’s Standard. Duke of Argyle’s Standard. 5 rror of Duke of 7 nN Corrected to Tem- Argyle’s Flint Glass. Crown Glass. yaaa Height. empera- | perature of R. 8. || Standard. ture. ture. Standard. in. o in. in. 29-274 36-9 29-302 . 29-301 29-482 39-0 29-496 , 29-496 29-454 40-0 29-460 : 29-458 29-246 41-6 29-256 : 29-255 29-358 41-3 29-372 . 29-370 29-204 43-2 29-214 . 29-213 The mean correction of the Duke of Argyle’s Barometer to the Royal Society’s is — 0.009. xlvii INTRODUCTION. TABLE 24.—Comparisons of the Makerstoun Standard Barometer with the Duke of Argyle’s Standard Barometer. Makerstoun Standard Duke of Argyle’s Makerstoun sate ai Standard. Standard. Duke of Argyle’s Standard. in. 30-050 29-598 29-596 29-176 29-512 29-556 29.228 29-450 29-560 The mean correction of the Makerstoun Standard Barometer to the Duke of Argyle’s is — 0-003, and, therefore, to the Royal Society’s — 0-012. From seventeen comparisons, the correction of ADIE No. 1 to the Makerstoun standard is — 0:005. 57. The observations are corrected for temperature by ScHUMACHER’s Tables, given in the Report of the Royal Society ; those of the mountain barometer are cor- — rected by the constant — 0-017, and of the standard, by — 0-012, the reduction to the Royal Society’s standard. The cistern is 213 feet above the level of the sea. § 9. THERMOMETERS. 58. The dry and wet bulb thermometers are by ADIE and Son. The bulbs are 0-3 inch in diameter, and a tenth of a degree can be estimated on the scales. They are placed 4 inches apart, on a wooden slab, the bulbs projecting below it. They were placed, from July 1841 till January 22. 1842, in the middle of a wooden case, the sides and tops of which were formed like Venetian blinds. The case was quite open below and on the side next the observatory, the thermometers being about 9 inches distant from the middle window, on the north side of the observatory ; and after January 22. 1842, from the west window on the same side.* This change was rendered necessary by the stove being brought to the middle of the observatory. * There is no doubt that these thermometers were placed in a bad position, being open to the effect of radiation from the observatory. This was, to some extent, unavoidable, as there was neither recess nor door on the north wall. Early in 1843, I had the thermometers placed on a revolving case, which could be turned by means of cords and pulleys from within the observatory when re- quired, and left afterwards with a good north exposure. INTRODUCTION. xhx 59. The maximum and minimum register thermometers are also by ADIE and Son. These thermometers, on RUTHERFORD’S construction, were 4 feet above the ground, near the east window, facing the north, and protected from the sun’s rays by projecting sides of wood. The roof was of copper, till August 1842, when one of wooden spars, shelving to the south, was substituted, as the sun shone on the copper top at rising and setting in the summer months. 60. The thermometer of the bifilar magnetometer is by Ross of London, and of the balance magnetometer by ROBINSON. 61. The following table contains the corrections of the thermometer to a stand- ard thermometer by NEwMAN; the comparisons being made in freezing mixtures and water. TABLE 25.—Corrections of Thermometers to Newman’s Standard Thermometer. Temperature. Dry. Wet. Max. Min. Bifilar. Balance. 16 0.5 —0-5 STi — 0-2 +0-1 0-2 22 —0:-5 —0:5 —0-2 —0:8 32 —0-6 —0:5 —0-1 +0-1 —0-1 —0-4 43 —0-5 — 0-4 — 0-4 +0-2 —0-3 --0-6 55 — 0-4 —0:3 — 0-4 +0:3 —0:5 — 0:4 61 —0-2 —0-1 — 0-4 + 0-4 — 0-4 —0:3 71 0:0 +0-1 —0-1 +0-5 —0-2 —0-2 80 +0-1 +0-2 +0-1 +0:5 0-0 +0-2 90 +0-1 +0-3 0-0 +0-1 All the readings of the thermometers in this volume have been corrected by the above quantities. § 10. Ratn-GAuGEs. 62. The rain-gauge A was placed in an inclosed space on the top of the Obser- vatory hill, June 26. 1842. Its funnel mouth is 6.1 inches in diameter, 8 inches above the soil, and 218 feet above the level of the sea. The quantity of rain is measured by pouring it into a graduated glass tube. The gauge B is placed on the top of the greenhouse. The funnel mouth is 6.7 inches in diameter, 18 feet from the ground, 192 feet above the level of the sea, and 680 feet NNE. of the gauge A. This gauge is sheltered by trees to the E. and NE., and its indications are, therefore, less trustworthy, especially during E. and NE. winds. The quantity of rain received is also affected by gusts of wind deflected from the sloping roof. The daily observations for this gauge, in the month of May 1842, were lost; the sum for the month will, however, be found in the Abstract. In the Abstract, the monthly readings of another gauge C are given. This MAG. AND MET. OBS., VOL. I. n 1 INTRODUCTION. gauge is placed in the centre of the Makerstoun garden, with a good exposure; the funnel mouth is 6.7 inches in diameter, 6} feet above the soil, 171 feet above the level of the sea, and about 620 feet N. by E. of the gauge A. The gauges B and C are about 180 feet distant. The gauges B and C were observed by Mr Maccatt, the head gardener. § 11. ANEMOMETER. 63. Previously to August 26. 1842, there was no vane to be relied on, and no instrument for determining the force of the wind before October 21. 1842. The estimations of direction were generally made with a handkerchief as a flag, and the force was estimated ; the scale adopted being, calm 0, and boisterous 6. Owing to the rarity of strong winds, the one extremity of the scale was not well understood, and in the other the estimations were much too high. 64. A vane was erected by Messrs ApiE and Son, on the north wall of the observatory, which, by means of a rod and geering-wheels, indicated the direction on a dial-plate within the observatory. 65. An anemometer made by Messrs ApIE and Son, and invented by Mr R. AvIE of Liverpool,* was placed at the north-east corner. In this instrument the wind blows down a tube, the opening of which, at the back of the vane, is always presented to the wind. The tube is bent up at the lower extremity into a vessel inverted in a cylinder full of water. This vessel is suspended by a cord passing over a wheel, and is balanced by a weight acting on a spiral. An index attached to the common axle, shews the pressure, on a dial, in pounds of pressure on a square foot of surface, and leaves a moveable index at the maximum. The spiral on which the weight acts is an involute of a circle, in order that the divisions on the dial may be nearly of equal size throughout. 66. Comparisons of estimated pressure, with the indications of the anemometer, shewed that the estimations under 2:0 were nearly equivalent to the same quantities by the anemometer, increasing above that, till 4:0 might probably be equivalent to a pressure of 8-0 pounds. 67. The way in which this instrument is observed is as follows :—About 2™ before the observation hour, the highest pressure shewn by the independent index is registered as the maximum pressure ; this index is then put back to zero, and from 7™ to 10™ after, the position which the index has attained is noted as the present pressure, and the index again set. 68. It is conceived that, on the whole, this instrument is trustworthy. It is occasionally, however, liable to slight derangements. A cup at the top contains mercury, in which the tubular portion of the vane turns; this fills with rain, which, when frozen, prevents the vane turning its aperture to the wind. * Described and figured by Dr Trait in his Physical Geography. INTRODUCTION. li § 12. STATE OF THE Sky. 69. After April 27. 1842, the quantity of clouds is estimated ; the whole hemisphere covered with clouds being 10; and no clouds, 0. After the same date, the motions of the clouds were estimated. A marked portion of cloud, which passes nearly through the zenith, is watched till the direc- tion is found in which it seems to run down one corner of the Observatory. About the end of 1843, the points of the compass, referred to each corner of the Observa- tory, were marked upon the surrounding paling; before this, the direction was estimated very nearly, as the walls of the Observatory are in the meridian and prime vertical. ‘70. The nomenclature adopted is that of Howarp, with a few combinations. The term scud refers to that loose, generally amorphous, and often rainy, cloud which is the lowest of all excepting the stratus. The state of the sky is generally observed after the magnetometers, at each observation hour. 71. The remarks on the weather, after May 1. 1842, were too lengthy to print on the same page with the other meteorological observations ; an abstract has been given there, and the original remarks printed in an Appendix. § 13. GENERAL AND RECAPITULATORY REMARKS. 72. As there was no computing-room apart from the Observatory, a small copper stove was placed in the south-east anteroom, in order that the latter might be used in the winter months for this purpose. In January 1842, this was removed, and a larger copper stove placed in the position S in the plan, from a belief that it would keep the temperature within the Observatory more uniform.* 73. The mean-time clock is by DENT ; it is kept at Gottingen mean time, the errors being determined by comparisons with the transit clock in the Astronomical Observatory. The rate is always kept very small. 74. The time used throughout this volume is Gottingen mean solar time, astro- nomical reckoning. The Gottingen time is 49™ 50s in advance of the Makerstoun time. 75. In the daily observations 1841, the bifilar magnetometer was observed 24 minutes after, and the balance magnetometer 2} minutes before, the minute of the declination observation. 76. Durmg the term-day observations 1841, the bifilar and balance magneto- meters were observed alternately 24 minutes after the minute of declination obser- vation. * Karly in 1843 I discontinued the use of a stove, and ultimately had it removed. hi INTRODUCTION. 77. In the daily observations 1842, the bifilar magnetometer was observed 2 minutes after, and the balance magnetometer 2 minutes before, the minute of declination observat_on. During the term-day observations 1842, the bifilar magnetometer was ob-, served 2 minutes after, and the balance magnetometer 4 minutes after, the minute of declination observation. 78. The following is the arrangement of the observers on the term-days. TABLE 26.—Initials of Observers for each Hour of the Term-Days, from July 1841 till December 1842. July. August. September. November, December January February. June July. August. September. October. November, December. | | | | ZARA | | | | | | | | lu! i= R R I I A A B B R R RHP PP PrPaRe Bow jaa BGUUBOUBtHy et mrwneun FARR SHR EE PPHBHB BRP Re P ere Peas DHPPrPHR RRA HDHBe ee ee PrP rPrPrAaAaAas AHP PprPPrPHenouet eae SUEsereeerprrHkee te he hb WB wB eve eoPPrPrPe PPUC HE HEOWPPPrPE HHH Aww waweeey SBSUEUUuvurt Herre ee ee eB UeBw rere ee ee PPUSDHAOPHWPPPrPPHR Heer Hehe wane oeus Sid 6 Qe Bown Re mens SiSlSe el eve oie be his OSOnt heart uehaowneaeaeaaahnthe ess om IanrhwhNre © PrPPH RRR He RWW ePrePre Se eSB PPpPrrans ERR Ae PP >PPHWHW He bd The names of the observers to whom the initials belong will be found, § 2. 79. The absolute westerly declination is to be obtained from the observations by adding 24° 20’, or by deleting the unit in the hundreds place, and prefixing 25°. 80. All the readings of the bifilar and balance magnetometer, are corrected for temperature by the quantities given in Tables 11 and 18; 300 scale divisions being added to all the bifilar readings. * Mr Wa ttace, of the Edinburgh Observatory. INTRODUCTION. hin 500 micrometer divisions are added to the readings of the balance magneto- meter in September 1841; 400 in October and November 1841 ; and 700 in all the other months. 81. In the term-day and extra observations of the bifilar and balance magneto- meters, the corrections for temperature are interpolated for the observations in the periods between the thermometer readings. 82. The meteorological observations are made in the period from 2™ before till 7 after the minute of declination observation. 83. In forming the abstract of the observations, the sums were taken, acciden- tally, according to the astronomical reckoning. 84. With the exception of Tables VIII. and XV., the othe tables of abstracts for the bifilar and balance magnetometer are ee by the quantities given. (No. 51.) 85. Owing to the fewness of the daily observations, the results are to some extent limited. ‘The remarks on the tables have been confined to pointing out their more prominent features. 86. When the observations for 1844 and 1845, which are made hourly, are reduced, factors may be obtained generally for the approximate conversion of the monthly means of four observations to the monthly means from the twenty-four observations. 87. It should be remembered, in considering the tables of abstracts, that the means for July 1841, are from only 11 days, and for January 1842 from 15 days. 88. On account of adjustments at different periods, several months of the ob- servations of the Force Magnetometers are not comparable with each other. These circumstances are given in the preceding pages; and in the tables of abstracts, the means which are not comparable with each other are separated by lines. 89. All the computations have been made by myself, or with the aid of my present assistants, Messrs WELSH and Hoae, and each computation has been per- formed twice by the same or by different individuals. JOHN A. BROUN. MAG. AND MET. OBS. VOL. I. 0 \, dial m é eta ‘BR OO heh 24 oe oe ermedie taieahel be oti ans Bie : a7 hk asl hal ret ay wa VG ipl aby uke aA oa ; rs aaa VO phi idat taikie. oars. ¥ "Be te tt! ( O 138-05 552.7 67:8 695-3 65-7 Gy) BOW es cnbscaéso il Sandro -ll Mas 4eecr|linatoorn al Eee 20 O] 127-97 || 545-0] 62-7 || 705-6] 62-7 20" Ol) 29-950 FO4829) 5257 I tage. |)... 23 O}] 135-92 || 541-5] 65-5 || 683-2] 64-7 25 Ol MB5-S5n lO oscoN hE ea alll cleo! ||) secre Aug. 20 2 O]] 142-05 || 557-1] 69-1 || 634-5} 68-1 Sept. 42 0}|- 142-50 || 54855) 51-4 | . 22... || 2.20. 5 O}] 138-23 || 552-8) 70-2 || 650-7} 69-5 5 O} 135-48 |} 551-6] 50-8 |] ...... | ...... 20 O| 130-87 || 540-2) 62-0 || 714-3] 62-7 Sept. 5 20 O|] 124-23 || 541-8] 47-3 || 713-7] 47-9 23 O|| 137-00 || 533-8} 60-4 || 691-5) 61-0 23 Oj] 126-52 || 539-7] 48-6 || 709-3] 48-6 Aug. 21 2 O|]] 145-92 || 538-3] 60-4 || 703-8] 60-7 Sept. 6 2 O|| 133-37 || 550-1] 52-6 || 699-0] 51-6 5 O|| 139-76 || 549-7] 59-9 || 722-3| 60-1 5 O|| 130-49 || 560-7} 55-6 || 698-5] 54-1 Aug. 22 20 0} 138-75 || 523-3] 56-8 || 683-2] 57-3 20 O|] 123-35 || 544-5] 47-1 | 711-0] 47-6 23 O]] 135-15 || 536-7) 58-0 || 675-2) 58-2 23 0} 128-40 || 545-0] 49.4 || 699-9] 49.9 Aug. 23 2 O}] 143-25 || 541-5) 61-6 || 676-3] 61-7 Sept. 7 2 O|] 133-07 || 551-0] 52-5 || 688-0] 51-3 5 O]|| 143-57 || 543-2) 63-7 || 718-5] 62-7 5 O|| 131-27 || 565-0} 54-6 |} 698-0] 53-1 20 O|} 150-30 || 504-5) 53-6 || 671-6] 54-1 20 O|| 124-79 || 506-2) 51-1 || 695-8] 51-6 23 Oj] 137-21 || 522-0} 54-5 || 709-6] 54-9 23 O]] 128-69 || 504-6) 52-3 || 699-8} 52-1 Aug. 24 2 O}] 140-56 || 542-5] 57-1 || 714-1] 56-9 Sept. 8 2 Of] 133-53 || 514-3) 53-6 || 683-0} 53-1 5 Of} 136-90 || 550-5} 60-1 || 695-3} 59-7 5 O}| 129-10 || 517-5| 54-5 || 693-6] 53-7 20 O| 132-27 || 545-8] 56-6 || 718-8| 56-7 20 O|| 122-64 || 503-6] 46-9 || 721-8] 47.4 23 O}] 136-00 || 544-6) 59-3 || 700-5| 58-7 23 O|| 127-14 || 499-9] 48-7 || 722-4] 49.0 Aug. 25 2 O} 141-47 || 557-9) 63-6 || 656-8] 62-2 Sept. 9 2 O|] 134-17 || 511-9} 52-9 || 695-7] 51-9 5 O|}| 136-88 || 555-3| 65-7 || 669-3} 64-2 5 O|}| 130-23 || 520-1] 55-7 || 688-9] 54-3 20 O|} 130-49 || 546-4) 61-5 || 691-1} 61-2 20 O|| 123-77 || 516-6] 58-6 || 681-3] 58-0 23 O}] 137-57 || 543-1] 64-1 |) 658-4] 63-3 23 O|] 128-17 || 514-7] 60-1 || 672-9] 59.5 Aug. 26 2 OO} 145-39 || 552-8) 65-5 || 663-6] 64-6 Sept. 10 2 O}| 134-59 || 522-4) 62-1 || 655-8| 61-2 5 O]| 143-11 || 570-2} 66-5 || 710-3] 65-8 5 O} 131-03 || 529-6] 62-6 || 660-4| 62-1 20 O|} 144-62 || 535-8] 62-1 || 605-6] 62-2 20 Oj|] 127-07 || 514-9] 59.0 || 656-8] 58-9 23 O| 138-93 || 548-3] 62-3 || 676-0} 62-2 23 O}] 128-27 || 517-7] 59-9 || 665-8] 59-5 Aug. 27 2 O| 152-00 || 551-2} 65-4 || 696-6| 64-7 Sept. 11 2 O}| 184-55 |) 525-1] 62-1 || 657-3] 61-4 Sie (0) 139-65 559-3 67 by 734-5 66-3 i, MCU Sides Gb Ore lll ear G2) | Aa aeemews || Ie yaeee iil Wieser & 20 O| 137-18 || 545-4! 63-0 || 672-4] 63-8 Sept. 12 20 O|] 127-27 || 531-3] 61-6 || 590-0] 62-2 23 0} 141-78 || 523-9) 64-5 |] 718-3} 65-1 23 O|] 144-15 || 509-5] 63-1 || 644-2] 63-2 Aug. 28 2 O]| 147-63 || 554-5| 67-6 || 712-3] 67-4 Sept. 13 2 O}| 139-90 || 541-0] 69-3 || 655-9| 68-4 5 O|| 139-72 || 563-4] 69-8 || 690-6] 67-8 5 O}| 129-49 || 539-3] 73-6 || 727-8] 71-6 Aug. 31 20 O] 143-35 || 508-6] 50-1 |] -».--. | -.---- Sept. 14 20 O/|| 131-45 |) 520-4] 61-8 || 675-8] 62-0 23 O] 143-24 || 535-5) 53-1 |] ---++. | ese 23 O|] 135-28 || 519-5} 64-0 || 674-8] 63-1 Sept 1 2 O} 142-08 || 564-7) 57-6 || «-..-. | sees. Sept. 15 2 O|| 135-43 |) 529-5] 68-3 || 652-8! 67-0 5 O} 134-35 |) 559-1] 58-8 |] ---00. | sees 5 0O}] 132-13 || 532-6] 69-5 || 657-6| 68-1 Biriuar. Aug. 44 —Sept. 745 4=0-0001522 g=0:000304=2-00 Scale divisions. 3 Sept. 74 20h—Sept. 304 £=0:0001464 g=0:000304—2°'08 Scale divisions. Batance. Aug. 44 -—Aug. 284 k=0-0000143 g=—0:000073=5:10 Micrometer divisions. 8 Sept. 54 —Sept. 304 k=0:0000127 g=0:000073=5:74 Micrometer divisions. Aug. 204 22h, Extra observations made during a thunder storm. Aug. 304. Mr Simms adjusted the agate planes of the Balance Magnetometer, making them parallel to each other; he also inserted spider’s threads in lieu of the silver wire for the bisection crosses, and adjusted the Micrometers. Sept. 34, middle of the scale. Remaining observations for the day not made, on account of alterations being made in the Balance Magnetometer. Sept. 7475. Torsion circle of Bifilar Magnetometer moved from 114° 50’ to 114° 0’, in order to bring the readings nearer the 4 DAILY OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 15—OcTOBER 15. 1841. Gottingen Mean Time of Declination Observation. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. 18¢—194, Sunday d. 15 16 17 18 19 20 21 22 23 24 26 27 h. 20 23 BIFILAR. DECLINA- TION. Cor- |Thermo- rected. | meter. te m. g Se. Div. sf 0 132-88 || 524-5| 61-0 0 135-13 || 518-6) 62-5 0 139-40 || 527-8} 64-2 0 134-25 || 531-9| 66-5 0|| 133-17 || 518-9] 55-1 0 133-95 || 517-5] 56-8 0 138-48 || 533-8] 63-4 0 133-77 || 541-7] 66-5 0|| 128-89 || 522-3) 54-6 0 133-90 || 510-6] 54-8 0|| 140-10 || 528-4} 56-9 0 135-82 || 526-7) 58-2 (OWiecocoasacd || aoogoo, 4) coaqea 0 133-22 || 510-3| 56-6 0 140-93 || 530-3] 61-6 O|| 140-36 || 548-7] 65-8 0|| 129-47 || 526-9| 60-2 0 135-20 || 516-6| 60-5 0 142-27 || 526-7] 60-4 O|| 136-52 || 536-2] 60-6 0 131-88 || 522-0] 53-0 0 135-19 || 513-5] 54-4 0 140-40 || 525-0] 58-8 0|| 136-83 || 529-7] 59-6 O|| 132-11 || 522-0) 52-4 0 135-68 || 517-3) 54-5 0 140-13 || 526-7) 56-0 0 135-20 || 536-0] 56-4 0|| 132-02 || 532-9) 62-4 0 137-28 || 515-0} 60-6 0 141-29 || 529-0} 60-8 0|| 137-88 || 540-5} 63-5 (ill erste or ste Setstes|| Wetrcress Seam | ecow'ste 0 136-20 || 525-1| 58-0 0 140-75 || 531-1} 58-2 0 144-42 || 546-1] 60-7 0 133-77 || 516-8} 55-4 0 144.93 || 497-6} 58-0 0 153-14 || 664-3] 62-0 0 130-45 || 860-2] 65-0 10) 142-08 || 508-7| 51-6 0 138-40 || 495-6] 54-0 0 139-92 || 526-0! 57-7 0 132-20 || 547-1} 59-2 BIFILAR. Sept. 74 20%—Sept. op Oct. 64 —Oct. BALANCE. Sept,5¢4 —Sept. Rs Oct. 64 —Nov. Sept. 254 2h, Sept. 254 4h, which were free of twist. Bifilar reading approximate. BALANCE. Cor- rected. Mie, Div. 660-0 660-9 655:3 670-2 644-8 677:7 653-7 666-1 304 304 304 Thermo: meter. eeeeee & Gottingen Mean Time of Declination Observation. di Mb Sept. 27 20 Sept. 29 2 Oct 18.42 Oct, 19.82 Oct. 10 20 Octa Li, 2 Oct. 12 2 Oct. 13 2 Oct. 14 2 Octet a2 Scale out of the field. Observations made during an extraordinary disturbance, at which time the torsion circle of the Bifilar was fre- quently turned, but left ultimately at its usual position. ae 2¢, Balance magnet reversed, for the purpose of determining the deviation of the bisection crosses from the magnetic axis. ct. 14—62, DECLINA- TION. 135-52 133-85 138-55 133-04 136-32 135-30 137-47 133-85 127-65 132-95 137-48 128-80 128-25 132-50 135-46 136-83 127-67 133-40 137-25 121-70 127-57 127-28 131-51 128-93 131-24 128-34 131-68 127-81 124-62 125-15 130-58 125-81 121-67 125-13 129-95 125-39 125-70 125.03 129-85 125-40 126-74 130-56 131-20 128-82 BIFILAR. Cor- Se. Div. 528-8 523-0 532-2 537-7 532-4 506-5 536-3 538-9 527-8 524-9 540-3 545-4 505-2 504.2 524-6 531-2 516-9 511-8 517-5 5595-5 513-5 515.4 533-4 549-7 524-1 533-1 536-0 544.7 504-9 520-5 041-4 552-2 537-0 533-5 042.3 542.4 537-4 542-7 541-8 549-1 554-0 535-9 536-8 558-8 k=0'0001464 g=0-000304=2:08 Scale divisions. 194 202 L=0:0001303 g=0-000304=2:34 Scale divisions. k=0:0000127 g=0:000073=5'74 Micrometer divisions. k=0:0000118 g=0-000073=6-20 Micrometer divisions. Thermo- rected. | meter. ° BALANCE. Cor- Thermo: rected. | meter. | Mice. Div. 617-3 633-0 631-6 659-0 575-5 680-4 635-3 754-8 602-5 639-2 627-0 681-2 653-7 642-3 644-6 666-6 625-2 650-3 643-5 735-3 661-2 666-7 649-3 706-7 665-6 662-5 638-2 638-7 651-1 661-0 665-9 662-6 656-3 654-7 647-6 662-4 641-1 625-9 630-8 640-7 607-8 645-7 646-3 656-8 55-2 59-2 62-6 62-5 56-2 56-5 59-7 61-6 56-2 56:7 61-7 62-2 50-9 50-9 54:4 56:5 51-5 52-9 56-2 55-4 49:5 50:7 54-0 55:7 52-1 54:8 57-2 58-0 48-9 48:5 51-8 55-2 48-1 49-4 51-0 50-1 49:5 53-5 55:7 56-5 01-4 54-0 56-0 55-7 Wires of Bifilar Magnetometer found to have a twist. Wires removed, and, after several trials, new ones inserted Adjustment completed. Torsion circle left reading 290° 0’. DAILY OBSERVATIONS OF MAGNETOMETERS, OcTOBER 15—NOVEMBER 13. 1841. 5 Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. “Mean Time of || DecLina- ——_——__—————] Mean Time of {|| DecLina- ||———___ Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION, Cor- |Thermo-|} Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. ait th: whan. z Se. Div. iB Mice. Div. e Gh ny re q Se. Div. 8 Mic. Div. : 1Oct. 15 20 O|| 123-99 || 538-8} 46-1 || 639-5] 46-1 | Oct. 29 20 0O|| 134-48 || 496-4| 44-3 || 650-2| 44-5 23 0O]] 128-90 || 532-:3| 47-3 || 653-1] 47-1 23 0|| 137-08 || 499-8] 47-6 || 655-4| 46-5 Oct. 16 2 O|| -131-22 || 542-4) 50-9 || 652-5] 49-8 }Oct. 30 2 O|| 139-75 || 506-8] 50-5 || 651-1] 49.2 5 O]| 130-23 || 544-2] 50-1 || 701-3) 49-8 5 O|| 137-08 || 506-6} 50-0 || 641-6] 49.1 Oct. 17 20 O|| 129-10 || 536-0] 46-4 || 632-4] 45-4 | Oct. 31 20 O|| 134-35 || 502-8] 45-1 || 639-6] 45-1 23 0|| 129-29 || 537-5] 46-9 || 639-7] 46-6 23 0} 135-75 || 499-9} 45-8 || 647-5| 45-6 Oct. 18 2 O/|| 134-85 || 546-8| 50-6 |) 639-4) 49-8 |]Nov. 1 2 O|| 138-23 || 507-3) 50-6 || 637-7| 49-1 5 O|| 132-47 || 552-2) 51-0 || 670-6) 50-1 5 O}| 136-34 || 512-5} 49-5 || 640-5] 48.9 290 O|] 125-19 |) 541-6] 40-0 || 654-1] 40-8 20 O|| 138-34 || 500-4) 40-3 || 631-3] 41-0 23 O|| 129-30 || 535-8| 41-7 || 646-9] 41-3 23 O}] 135-65 || 494-2} 40-2 || 639-9| 40-9 Oct. 19 2 O|| 133-07 || 551-9} 50-6 |} 634-6) 48-5 | Nov. 2 2 0O]|| 138-87 || 505-2] 44-1 || 644-3] 43-5 5 O|| 129-05 || 552-6) 51-6 || 659-9) 50-1 5 O]] 136-65 || 511-3) 48-6 || 646-2} 46-6 20 O|| 128-40 || 539-8! 46-6 || 642-6] 46-6 20 0O}| 134-43 || 506-5) 40-9 || 632-8| 41-3 23 O|| 129-69 || 502-2] 51-1 |) 639-2} 49-2 23 0} 136-52 || 501-2) 44-7 || 626-6) 44-1 Oct. 20 2 O|| 130-95 || 505-6| 54-0 || 629-5] 52-6 | Nov. 3 2 0O|| 138-03 || 507-8| 47-3 || 630-5| 45-8 5 O|| 131-17 || 506-5) 52-6 || 669-8} 52-1 dS O]| 135-68 || 515-0} 47-0 || 635-3) 46-1 20 Oj] 125-94 || 498-7}) 50-1 || 508-1] 50-6 20 O}| 128-17 || 512-4) 39-7 || 502-1) 40.4 23 O|| 132-44 |) 490-6} 49-4 || 612-5) 49-1 23 0} 139-47 || 482-6] 41-5 || 625-9} 40-9 Oct. 21 2 O|| 129-15 || 498-7] 52-6 || 755-3) 52-1 | Nov. 4 2 0O|| 147-03 || 519-8] 46-2 || 709-6] 44.6 5 O|| 130-80 || 514-1) 54-3 |) 680-2) 53.4 5 Oj 139-53 |) 503-5] 47-6 || 734-9] 46-1 (yl poste Sccd ||| seoobor || Scecoc. ||| INtccoceoes lretcine 20 0} 139-35 || 499-5] 38-3 || 608-6] 39-0 0 486-7| 41-7 || 660-5] 42-1 23 O|| 146-30 || 491-2] 40-6 || 683-9] 40-0 0 501-3| 45-1 || 653-1] 44.5 | Nov. 5 2 O]] 149-77 || 506-3] 45-4 || 687-2] 43-6 0 503:2| 45-2 || 652-8] 45-1 5 0O|| 134-06 || 510-2) 46-7 || 718-6} 45.2 0 501-2| 43-2 || 658-6] 43:2 | Nov. 7 20 0O|| 134-86 |} 509-8| 50-4 || 612-4] 49.6 0 496:8| 47-6 || 660-0} 45-6 23 0|| 137-50 || 497-1] 53-4 || 629-8| 51-8 0 504-9| 49-8 || 647-0] 48-1 | Nov. 8 2 0O]|| 137-34 || 515-4] 57-3 || 608-9] 55-7 0 507-4| 49-6 || 650-1] 48-6 d O|| 135-52 |) 508-9| 56-0 || 637-5| 55-2 0 491-3} 44-6 || 544-4) 44-5 20 O|| 13645 || 524-2] 51-4 || 597-7] 49.9 0 495-2| 45-4 || 652-5] 45-0 23 0O}| 133-45 || 507-3] 50-6 || 622-4] 50-1 0 648-9) 48-5 |/1144-4| 47-6 | Nov. 9 2 O]| 136-37 || 512-2] 50-6 || 626-7| 50-4 0 554-9 | 48-4 1062-9] 47-6 5 O|| 134-46 |} 511-9] 50-4 || 660-7} 50-1 0 483-5| 41-7 || 611-3| 42-0 20 0O|| 128-55 || 510-2) 49-7 || 603-4] 49-1 0 493-4) 42-3 || 715-8| 42-1 23 0|| 132-31 || 508-5} 51-0 || 629-2) 49.9 0 497-0| 46-4 || 727-3| 45-4 | Nov.10 2 0O|| 135-55 || 506-8] 51-6 || 627-5| 51-1 0 480-5 | 46-2 || 905-5| 45-6 5 0O}] 133-38 || 508-9} 51-3 || 627-7} 50-8 0 495-1| 40-9 || 667-5| 41.0 20 0|| 129-32 || 509-5| 45-9 || 608-1) 46.2 0 487-0| 43-5 || 704-8] 42-5 23 0|| 130-07 || 511-8} 46-6 || 609-3| 46-4 0 507-9| 51-1 || 686-5] 48-5 | Nov. 11 2 O]| 137-54 || 504-6| 47-6 || 629-2] 47-1 0 500-0 | 49-9 || 689-9} 48.8 5 0] 133-04 || 501-8} 48-4 || 669-2} 47-6 0 493-4] 43-1 || 562-4] 43.0 20 O|| 133-28 |) 510-2| 40-4 || 626-4) 40-6 0 497-5 | 45-4 || 650-0} 44-9 23 0}| 131-51 || 500-7} 42-4 || 645-2] 41-6 0 498-4| 50-9 || 672-5) 49-6 | Nov. 12 2 O/|| 134-73 || 504-0) 43-3 || 655-3| 42-7 0 513-0} 50-4 |) 704-8} 50-1 5 O|| 131-27 || 511-6} 43-4 || 668-9] 43-0 0 495-4] 39-7 || 651-4| 40-5 20 0}; 131-50 || 500-8| 35-8 || 645-1| 36-5 0 497-4| 44-2 || 668-0] 43-7 23 O]}| 133-73 || 503-1] 37-1 || 606-2} 37-2 0 504-1) 47-9 || 654-8} 46-8 | Nov. 13 2 0] 133-04 || 508-1] 43-2 || 653-6} 41-5 0 512-4] 49-1 || 639-7] 47-8 5 Oj] 131-00 || 505-9] 44-1 || 649-9) 43-0 BIFILAR. Oct. 64 —Oct. 194 20% k=0:0001303 g=0:000304=2'34 Scale divisions. a Oct. 194 23h—Dec. 314 k=0:0001248 g=0-000304=2°44 Scale divisions. BALANCE. Oct. 64 —Nov.30¢ k=0:0000118 g=0:000073=6:20 Micrometer divisions. Oct. 194 21h, The readings of the Bifilar having altered, so that the middle of the scale was no longer the mean position, the arm of the torsion circle was moved 50’. Torsion circle left reading 289° 10’. MAG. OBS, VOL. I. B 6 DAILY OBSERVATIONS OF MAGNETOMETERS, NOVEMBER 14. 1841—January 17. 1842. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- ||_—_—_———_ Mean Time of DEcLINa- |——_—_———_ || ——___—__ Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION, Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. |} rected. | meter. Observation. rected. | meter. || rected. | meter. Gh ney hase a dy Shy im: M4 Se. Div. = Mic, Div. © Nov. 14 20 O/|| 132-64 Nov. 22 20 0 130-22 || 507-4| 36-8 || 632-1] 37:0 23 O|] 131-24 23 0 126-23 || 499-3| 38-1 || 638-5| 37-7 Nov. 15 2 Oj] 132-30 Nov. 23: 2° 0 131-20 || 496-7| 39-7 || 650-0} 39-1 5 QO} 130-15 5 O|| 127-57 || 503-0] 40-5 || 662-0} 40-0 20 O|] 129-36 20 O|| 127-48 || 505-2] 38-2 |} 635-1] 38-3 23 O|| 129-67 23 O}| 129-18 || 503-6] 40-7 || 636-7] 39-8 Nov. 16 2 O|| 130-90 Nov. 24 2 0 132-10 || 498-6] 44-7 || 652-2] 43-7 5 O}| 129-07 5) 0 129-00 || 505-1] 44-5 || 650-0] 43-5 20 O|| 128-38 20 O 125-58 || 505-2| 36-8 || 627-1] 37-2 23 O}| 131-67 23 O|| 128-15 503-6] 36-8 || 617-0| 36-7 Nov. 17 2 O|}] 134-59 Nov. 25 2 O|| 130-10 || 517-1] 45-4 || 615-2) 43-3 5 O 132-33 5 0 127-68 || 515-0| 48-5 || 611-0] 46-8 20 O 129-07 20 O|| 126-92 || 499-9| 35-0 |) 639-9] 35-7 23 ‘0 132-22 23 O}} 128-05 |} 502-1] 35-5 || 638-8] 35-5 Nov. 18 2 0 133-00 Nov. 26 2 O]] 132-05 | 514-9} 42-5 || 632-1] 41-0 on 0 132-84 5 O|| 128-63 || 517-7| 48-6 || 626-9] 45-1 20 O 148-57 20 O 129-10 || 510-5| 46-6 || 634-2] 47-2 23 O|}| 139-16 23 O|] 130-83 || 507-7| 46-6 || 610-3| 46-3 Nov. 19 2 0)! «4d... Nov. 27. 2 O|| 131-90 || 512-3} 49-8 || 606-0] 48-8 : 5 Oj] 134-12 3 0 131-82 || 511-8] 50-4 || 625-2] 49-1 20 O 132-11 Nov. 28 20 0 129-03 || 505-7] 39-8 || 633-2] 40-2 23 0 135-28 23 O}| 129-49 || 505-1} 41-2 || 624-7] 40-8 Nov. 20 2 0 136-40 Nov. 29 2 O]|] 132-30 || 516-1] 48-0 || 613-6] 46-4 5. (OO 129-00 5 O}} 129-98 || 516-7} 50-6 || 612-2] 49-1 Nov. 21 20 0 126-78 20 O} 129-63 || 511-8) 45-3 || 604-:5| 45-3 23 Ol] 129-95 DBP Dill pebie deceetl libs foarthteees ce All| oetmeceeanl renee Nov. 22 2 O|| 131-47 Nov. 30 2 0 0 0 Jan. 12 20 O| 127-32 || 510-5] 40-0 |} 922-1] 41-5 | Jan. 14 20 O]| 127-78 || 516-7} 40-1 || 944-3] 41-0 23 0} 130-40 || 507-4} 39-2 || 950-0} 40-5 23 O|| 128-83 || 517-5} 43-0 || 943-0] 44-0 Jan. 13 2 O| 130-27 | 519-4| 44-6 || 935-4] 45-9 | Jan. 15 2 Of] 132-15 | 526-9] 48-1 || 910-3] 48-9 5 O}, 130-52 || 518-9] 46-0 || 941-2} 47-6 5 0} 130-13 || 522-2) 47-7 || 924-3) 48-5 20 O| 127-77 || 509-0| 35-1 || 952-5] 35-6 | Jan. 16 20 0] 128-25 || 513-4| 34-5 || 964-0] 34-3 23 0} 130-09 || 510-7] 35-6 || 967-2} 36-0 23 0]|] 129-40 || 508-0] 37-3 || 981-1] 37-1 Jan. 14 2 O} 130-58 || 525-5] 44-6 || 939-8] 44-6 | Jan. 17 2 0] 131-95 || 521-8] 45-2 |) 937-5] 44-6 5 0] 128-98 || 523-0] 45-6 || 938-9} 45-8 5 O|]| 129-72 || 521-9} 48-6 || 927-9| 47-9 BirizaR. k=0:0001248 g=0:000304=2°44 Scale divisions. BALANCE. Oct. 64 -—Noy. 30¢ 4=0:0000118 g=0:000073=6:20 Micrometer divisions. 3 Jan. 124 —Jan. 224 k=0:0000127 g=0-000073=5.75 Micrometer divisions. Dec. 44. The declination magnet found to have untwisted the suspension roller, to have sunk down and rested on the copper ring, which had severed some of the fibres of the suspension thread. Thread removed, and a new one prepared. Dec. 6%. Fibres of the new thread found unequally stretched. Dec. 84. A satisfactory thread obtained, which was attached to the suspension roller, and the torsion removed. Dec. 204. On Mr Russell’s return from Edinburgh he found the thread so much stretched as to bring the stirrup in contact with the copper ring; it was therefore wound up a little, and the torsion removed, preparatory to the term-day observations. Dec. 234 0». (Term day.) Declination magnet again found in contact with the copper ring, from the stretching of the thread. Magnet wound up. Dec. 284, The short scale removed from the declination magnet, and a long one attached. (Torsion removed ?) Jan. 14 et seg. Observations made to determine the temperature correction for the Balance magnet. Instrument readjusted. DaiLy OBSERVATIONS OF MAGNETOMETERS, JANUARY 17—FEBRUARY 12. 1842. Gottingen Meah Time of Declination Observation. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. Jan. h. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 h. 20 23 oocoeo eooe Goce coco 3 DECLINA- TION. Cy Ce ereeeene Peewee nee eee eens Ca eee een ne awn ewes eee nwnee seen wenes See eneeee see eoeees Co Peer eene wee eeeane Cory ere eeeere Fae eeeeee see eeseee Bee eeeree Sa ry BALANCE. Jan, 124—Jan. 224 ” Gottingen Mean Time of Declination Observation. BIFILAR. BALANCE. Cor-' |Thermo-|| Cor- |Thermo- rected. | meter. || rected.| meter. Se. Diy. © Mic. Div} ° d. 523-0| 37-3 || 939-9] 38-8 | Jan. 31 515-9| 39-8 || 959-3) 41-7 516-3] 43-9 || 946-9] 44.5] Feb. 1 510-0} 46-2 || 993-7| 46-6 513-4| 39-2 || 947-1] 39-8 512:7| 43-2 || 967-4| 43-2 527-4| 52-7 || 946-6] 52-6 | Feb. 2 526-0| 52-1 |] 948-0] 52-2 522-3] 57-8 || 940-7] 59-4 511-9] 53-5 || 955-6] 55-3 524.9} 58-8 || 947-4] 60-9] Feb. 3 525:5| 59-6 || 955-5| 61-2 517-6 | 46-9 || 973-8| 49-8 504-4] 44-3 || 971-2) 45-4 517-2| 46-6 || 967-7| 49-0 | Feb. 4 522-4} 48-8 |) 963-9] 51-1 508-8 | 33-9 || 978-2] 34-5 525:4| 44.2 || 940-4| 44-1] Feb. 5 523-4] 48-3 || 958-9| 48-1 508-7} 38-5 || 941-1] 39-8} Feb. 6 513-4] 41-6 || 983-5] 41-4 530-5| 49-9 || 940-1} 50-1] Feb. 7 522-0} 51-0 || 948-8] 50-8 514-5| 42-7 || 948-7| 44.3 512:6} 44-6 970-4] 44-6 513-8| 43-8 || 967-4] 45-4] Feb. 8 519-7 | 45-6 || 957-1] 47-1 518-1] 41-7 || 964-5| 42-5 515-4] 43:3 || 970-5] 44-1 525-9] 48.4 || 935-0} 484] Feb. 9 529-0} 50-5 || 935-2] 50-1 515-4] 44-6 || 948-0] 46-0 519-6] 45-6 || 948-2} 45-6 529-2} 49-1 || 933-1} 49-1 }| Feb. 10 529-7| 506 || 931-9} 50-4 521-2] 44-6 || 926-5| 45-8 522-7| 47-1 || 929-9] 48-5 521-5] 50-6 || 907-6] 51-1 | Feb. 11 521-4| 52-1 || 916-4] 52-6 517-5) 38-7 931-2} 39-0 511-4] 39.7 946-2} 39-9 519-0] 44.9 || 921-3| 45-9 | Feb. 12 527-1| 48-1 914.5] 47-6 BIFILAR. detorsion had evidently varied considerably. DECLINA- TION. 128-72 125-79 129-70 125-97 123-40 127-25 130-82 130-40 123-95 126-90 131-43 125-42 124-43 125-97 132-67 130-83 125-35 127-03 151-85 128-43 130-90 128-52 139-60 135-42 126-62 132-45 134-08 132-45 132-00 130-93 136-00 133.40 131-49 133-44 137-41 134-35 132-10 131-73 138-30 137-32 131-65 134-47 139-70 139-05 || 530.2 BIFILAR. Cor- rected. Thermo- meter. Se. Div. ® 525-4 520-2 520-2 539-5 520-6 509-0 528-2 515-1 510-0 513-9 521-1 526-7 520-1 517-2 524-2 526-9 518-6 512-2 518-2 523-0 504-7 505-9 507-8 530-9 515:3 k=0°0001248 g=0:000304=2'44 Scale divisions. k=0:0000127 g=0:000073=5'75 Micrometer divisions. Jan. 234—March 214 5h £=0:0000140 g=0:000073=5:20 Micrometer divisions. Jan. 204 6%. Suspension thread of Declinometer broke away fibre by fibre during the term observations. Jan. 21¢, Subsequent circumstances inclined Mr Russell to believe that the stretching and breaking of the fibres alluded to above must have arisen from the silk being defective at that part of the reel from which the threads were formed. then removed. ‘Torsion circle reading 280°, r BALANCE, Cor- Thermo- rected.| meter. Mie. Diy. 906-4. 920-8 896-7 982-6 908-7 910-8 930-7 923-5 921-9 938-9 929-5 905-1 946-0 919-7 914-5 911-9 920-7 945-9 913-9 912-0 906-6 945-9 939-3 931-4 921-6 925:3 907-8 900-8 920-9 922-9 924-2 913-4 914-0 914-2 909-6 916-9 891-8 899-1 879-5 904:8 758-6 852-3 871-0 905-4 44.3 45-0 53-8 52:3 50-6 51-1 54-9 56-7 42:5 43:8 49-1 53-2 49:4 49-6 52:0 54-1 48-1 47-9 51-1 52-1 32-1 35-3 42-5 48-2 45:1 45:8 49-1 53-6 48-1 46-5 49-6 53-1 48-6 49-6 51-8 52-6 51-4 53-5 54-7 53-2 60-7 57:3 58-4 58-2 Jan 194 2h, wo fibres of the suspension thread of the Declinometer found broken; the loose fibres removed, but the plane of A new thread prepared. It was allowed to stretch for several days, in consequence of the breaking of the last. The torsion was 8 DAILY OBSERVATIONS OF MAGNETOMETERS, FEBRUARY 13—Marcu 11. 1842. Gottingen Mean Time of DECLINA- Declination TION. Observation. da bye an: Feb. 13 20 0O 132-17 23 0 130-96 Feb. 14 2 0O 137-17 5 0.|| 133-24 20 0 130-10 23 O}] 130-33 Feb. 15 2 0 134-90 5) 2) 132-80 20 O 129-82 Wp) (i) 131-78 Feb. 16 2 0 135-02 By (0) 134-42 20 O 129-87 743) {0) 132-33 Hebs jae a0) 140-30 0) 118-15 20 O 130-75 23, (0 138-49 Feb. 18 2 0 140-52 5y (0) 121-33 Ady (0) 133-62 23) Ol saw Feb. 19 2 O|| 136-35 (0) 135-57 Feb. 20 20 O]] «:---++:- See sOiliececeees 1 Bebs- 2h v0 0 itera 5 OI) ceeeeeeee DO Ol} -aseceeeee 23} (6) |/eansenbocc RA ce oe GY ONIN So sconsas Span 0) |Pecnoenoon 0) (0) |||) seeasnocs 2 (On Goadpodoo INO Rvalb ye sys GMI aseceourr Sy! (O) I) cscuscenc GYN VN) sasaeooad DBP Oil Merpesianciers | Feb. 24 2 O]f cvseseeee Fy OD) ietetetereyeretare DIN ON | pononoccs D3, {Oily esisncteeer Meby 25) 02) (Oi|tec-naeee SD MOI Meters civterae BALANCE. Feb. 204, Torsion suspected in Declinometer thread. Torsion tried, estimated at 10°. BIFILAR. Cor- |Thermo- rected. | meter. Se. Div. 518-3 510-7 518-7 526-4 526-8 521-7 526-0 533-9 519-6 518-0 527-9 531-0 514-3 514-9 514-5 531-6 526-8 514-8 533-0 539-5 518-9 BALANCE, rected. | meter. Gottingen Mean Time of Declination Observation. Thermo Mar. 3 2 Mar, 4 2 Mar Sse? Mar. 6 Mar ‘7.92 Mar. 8 2 Mar. 9 2 Mar. 10 2 Mian sida bo wo SOS OSS SSeS SS Cre ae CS OO eo See eae oO OO. OOF ee ore On seeoooe Geocce DECLINA- TION: eee wens Seen eeeee 124-63 127-21 132-33 127-80 BIFILAR. Cor- rected. Se. Div. 524-2 515-1 525-6 532-2 sete BIFILaR. k=0-0001248 q=0-000304=2°44 Scale divisions. in an opposite direction from what was suspected. Left with brass bar suspended. Feb, 214, Feb, 254 The bar had come to rest 50° or 60° to the W. of north; it was allowed to hang for a day or two, when it was found still in the same position; so that the estimation of Feb. 204 was probably inaccurate. Torsion removed. Circle reading 330° 30’. of making the Dip observation, was, in some way, connected with this change of the plane of detorsion. Thermo- meter. 53-6 51-4 54-2 58-3 er eeee Jan. 234—March 214 5 k=0:0000140 g=0:000073=5:20 Micrometer divisions. Circle turned to 270°. It seemed to Mr Russell that the shifting of the magnet, for the purpose BALANCE, Cor- |Thermo rected. | meter. Mic. Diy. . 860-7} 55-8 885-7| 53-4 879-5| 56-1 ry This torsion is DAILY OBSERVATIONS OF MAGNETOMETERS, Marcu 11—Apriu 6. 1842. 9 Gottingen BIFILAR. BALANCE, Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- Mean Time of DECLINA- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. ts ae ee ‘ Se. Div. Mic. Div. a, (he mM. 4 Se. Div. 5 Mie. Div. = Mar. 11 20 Mar. 24 20 0] 125-12 || 515-9] 48-9 || 859-5] 49-9 23 23 0} 129-75 || 507-2} 51-3 | 874-9} 51-9 Mar. 12 Wieres 5) 0) sooonenaea I cesonces econ orcen||toootees loco tc, ERE U CDH Waretetercre/ereterell| |e cietoet-tellllimevsiscensrel Ill teleteww'sy fl> alsreie ate Mar. 13 ll. cacarceds: ||seetpeul waadeemc en |decoc rs mrooopes SYD All ecocdoccid Yl Ikcmeeeemsl Recher an IMccisceranl IERETAZ Oilers GMM illanaatactococ ll neers Rene all, Repeats 4 Aecares Mar. 14 ON iets aztcters Mar. 26 2 O|| ----:++:: 518-9| 45-1 | 873-1] 45-6 | Wepccuonet Fe (0)) | econancaos 533-1| 49-4 | 911-7| 48-6 OW ARR a Ree Mar. 27 20 0} 133-25 || 520-1| 44-1 || 869-0] 43-5 0 23 0] 136-42 || 499.6| 46-5 | 900-0] 45-6 0 Mar. 28 2 O} 138-55 || 528-4) 51-1 || 924.7) 49.2 0 5 0} 131-20 || 546-3) 52-5 || 960-9] 50-9 O}| 127-75 20 O| 129-50 || 519-3} 44:6 | 900-4) 45-1 0|) 133-90 23 0}) 133-60 || 510-9| 46-1 | 898-0} 46-1 O|| 141-64 : Mar. 29 2 0O]] 139-60 || 526-4) 50-6 | 889.2} 49-1 0} 136-12 : 9 : ; 5 0] 136-52 || 527-6] 51-4 | 925-3) 50-1 0|| 128-77 20 Of} 131-13 | 511-0] 43-7 | 881-0] 43-5 0|| 133-87 23 0} 133-04 || 511-3) 44-5 || 898-9] 44-1 0|| 134-58 ‘ Mar. 30 2 O| 142-80 || 517-9| 47-2 | 906-5} 46-1 0|| 132-62 : . . : 5 0|| 139-76 || 538-0| 50-4 | 928.3] 48-6 0|) 128-60 ; 20 O|}] 127-20 || 519-6| 44:5 || 905-2] 44-6 0) 132-27 23 O|| 131-42 | 511-0) 45-3 | 898-4] 45-1 O} 134-55 : : Mar. 31 2 O|| 134-82 || 530-0] 49-1 | 888-9| 47-9 O}} 131-43 : : : : 5 O]] 131-87 || 532-1] 50-4 | 903-7] 49-1 0}, 127-05 20 O}] 124-39 | 523-4) 43-4 | 900-6] 43-3 0]| 134-40 23 0], 128-98 || 516-7| 44-2 | 890-4| 43-8 0|| 140-09 y Apr. 1 2 O| 137-32 | 506-2} 47-4 || 890-6} 46-1 0}; 140-83 * : . . 5 O|] 134-20 |) 530-1} 48-5 | 917-7] 47-1 0|| 128-48 20 O|| 127-61 || 514-8} 41-5 | 894-5) 41-5 0}| 132.97 23 0|| 130-93 || 510-0| 42-2 | 895.4| 42-0 0} 138-47 : Apr. 2 2 0} 137-20 || 516-9] 43-2 | 889-7] 43-0 O}| 133-77 - . : : 5 O|| 134-15 | 530-4| 43-2 | 910-8] 42-8 0} 128-37 Apr. 3 20 O| 127-00 || 513-3} 39-2 | 911-2] 39-5 0|| 128-67 23 0] 131-52 || 508-3) 41-7 | 886-4] 40-8 0} 130-78 6: : Apr. 4 2 0} 136-20 |) 529-7) 48-4 | 895-5} 46-3 Oj] 128.32 . : . ED 5 0] 135-62 |) 543-5) 53-1 | 915-5] 50-1 0}| 122-65 20 O} 128-38 |) 513-6| 42-2 | 900-2] 42-5 O|| 129-67 23 0} 131-87 || 511-1] 44-2 | 890-9} 44-0 0} 136-05 : o Apr. 5 2 0} 138-40 || 530-0] 50-4 | 879-8] 48-5 0}, 131-72 : . : . 5 O|| 133-10 || 543-2) 55-7 || 893-3] 53-1 O}|| 125-45 20 O|| 128-68 || 509-0| 43-2 | 873-0} 43-5 0|| 130-13 23 O|| 134-30 || 507-9) 44-6 | 882-0] 44-3 0|) 134-30 : Apr. 6 2 0] 139-89 || 530-3} 51-1 || 890-5} 49-1 0}; 130-50 : : : : 5 O|] 132-95 || 539-5| 56-6 || 899-2] 53-8 BIFILAR. k=0'0001248 g=0°000304=2°44 Scale divisions. BALANcr. Jan, 234 —Mar. 214 5 k=0:0000140 g=0-000073=5-20 Micrometer divisions. os March 21¢ 20»—April 164 k=0:0000118 g=0:000073=6.20 Micrometer divisions. March 11¢ 20%, 23h; March 124 2h, 5h, +3”30. See note March 144, March 144, Torsion of Declinometer thread examined. Circle moved 54°. Left reading 276°. Mr Russell conceived this torsion to have taken place on removing the magnet in order to make the Dip observation March 11¢ 64, when most probably from the thread getting loose for a moment the fibres took a different disposition inter se. March 2546, On removing the detorsion bar from the Declinometer after the Dip observations, the suspension cylinder was accidentally let slip. Brass bar suspended throughout March 264, and torsion removed. Circle left reading 326°. March 254 16, Declinometer employed in making intensity observation. March 254 20h23h, Observatory being cleaned. Observations of the declination at these hours have been corrected for torsion by MAG. OBS. VOL. I. 10 DaILy OBSERVATIONS OF MAGNETOMETERS, APRIL 6—May 4. 1842. Gottingen BIFiLanR. BALANCE, Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- Mean Time of DECLINA- Declination TION. Cor- |Thermo-|| Cor- |Thermo-| Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. Die Hey Mat , Se. Diy. 2 Mic. Div. e f dy hey , Se. Div. A Mic. Div 2 Apr. 6 20 0 127-67 || 517-3| 46-6 || 902-0| 46-8 Apr. 20 20 O|] 133-20 || 511-8) 57-1 || 859-1] 58-7 yy AY) 133-77 || 511-0! 46-9 || 886-7} 46-6 | 23 0O|| 137-70 || 508-8} 58-6 || 860-8] 59-5 Apr 7 2 O|| 138-93 || 524-:8| 47-9 || 883-0] 47-4 Apr. 21 2 O} 140-33 | 526-6| 63-7 845-7 | 63-1 5 0} 133-51 |) 529-5] 49-1 || 883-0] 48-1 5 O]}] 135-75 || 529-0) 66-9 || 919-2! 66-7 20 O|| 127-80 || 517-2) 42-7 || 900-8] 43-0 20 O|| 130-52 || 513-3) 53-6 |) 870-7] 54-1 23 O| 133-78 || 512-5) 44-6 || 888-3] 44-2 23 0O|| 134-33 || 519-9| 55-0 |) 887-8] 55-1 Apr. 8 2 0 140-47 || 530-6| 51-1 || 855-8] 49-1 Apr. 22 2 O} 137-98 || 531-4} 62-0 | 861-4) 60-2 a 0 135-65 || 537-0| 56-1 || 878-5] 55-2 5 O|| 137-58 || 529-2| 62-6 || 867-0] 63-1 20 O| 128-77 || 512-1] 42-2 | 900-9} 42-8 20 O|| 128-48 || 518-6] 49-9 || 868-8| 49-6 23.) 0 132-85 || 507:6| 43-7 || 882-0} 43-5 250 0 130-90 || 511-6} 50-6 || 884-5] 50-1 Apr. 9 2 0 140-47 || 524-9| 50-1 || 869-3} 48-1 Apr 23 2 O|| 137-80 || 529-5| 54-6 || 857-7| 54-4 5 OO] 135-02 || 532-1] 55-6 |) 878-1] 52-9 5 0 132-47 || 536-3} 62-6 || 865-8] 60-0 Apr. 10 20 O 134-44 | 505-:9| 44-6 || 787-7| 45-3 | Apr 24 20 O 120-85 518-1! 50-6 || 867-4| 50-6 23 0 144-32 || 493-4] 45-6 || 852-2) 45-6 23 O}] 132-20 || 511-3) 51-3 || 855-6| 50-9 Apr. Nie 20 142-46 || 518-2} 50-6 |) 912-1) 49-1 Apr 25 2 O|| 137-63 || 529-9] 57-6 | 855-7| 56-2 5 0 140-73 || 537-5| 53-1 969-7) 51-1 a 0 134-44 || 541-4] 62-2 || 849-8] 59-9 20 OO] 126-43 || 511-9} 42-2 }| 881-9] 42-1 20 O}] 128-01 || 522-0; 49-1 || 873-7| 49-1 23 O]] 132-80 || 514-9] 44-5 | 897-6] 44-0 23 O|] 131-67 || 517-5, 50-8 || 850-9} 50-3 Apr. 12 2 OO] 140-55 | 514-6] 48-0 | 935-5| 46-6 Apr. 26). 72%-0 137-77 || 534-7| 57-6 || 808-3] 55-7 By 10) 136-33 || 536-1) 51-0 | 964-0] 48-6 5 0 135-02 || 541-9| 61-6 || 846-6} 59-2 Pay? (0) 131-30 || 467-0] 41-7 || 880-8] 41-8 20 O|| 126-35 || 520-0} 46-6 || 865-7| 47-1 23 0 149-15 || 477-6| 42-9 || 863-6| 42-7 23 O]] 131-62 | 513-6| 49-2 | 861-1] 48-8 Apr. 13 2 O} 147-95 || 536-3] 45-6 ||1041-6| 44-6 Apr. 27 2 O|} 136-62 || 527-0] 55-1 || 852-4) 53.4 5 0 139-30 || 530-4] 47-9 || 932-1] 46-2 5 Ol] 135-65 || 540-3| 59-3 || 841-2] 56-6 20 O 128-75 || 506-1] 41-7 || 903-9} 41-5 20 O|} 128-83 || 519-3} 47-9 || 867-6] 47-8 23 O| 133-13 || 500-7| 42-7 | 916-6] 42-5 23 O}| 131-69 || 516-8| 48-6 || 859-6] 48-4 Apr. 14 2 0O 140-10 || 512-2) 44-6 || 896-3] 44-1 Apr. 28 2 O|| 137-43 || 530-7] 54-3 || 829-5] 52-5 ' 5 0 136-62 || 531-1] 46-6 || 907-4] 45-9 5 OO} 135-63 || 547-2] 59-8 | 808-7] 52-1 20 O 152-33 || 454-9] 43-7 || 579-6] 43-5 20 O|| 127-54 || 518-9] 46-3 | 853-7] 46-9 23 0 142-47 || 467-2] 44-2 || 885-1] 44-0 23 O|| 132-93 || 517-7| 50-1 || 854-7] 49-4 Apr. 1 2. 0 144-34 || 507-4| 45-6 || 931-4] 45-1 Apr. 29 12) 0 137-74 || 533-4) 57-1 || 832-1} 55-2 a 0 136-92 || 559-8| 47-1 |1063-2| 46-1 on 0 138-82 || 543-8] 61-4 || 844-9| 59-2 20 20 146-03 || 499-3] 42-7 || 862-9] 43-8 20 O|} 130-16 || 518-2} 48-1 || 874-6] 48-4 23 0} 136-15 | 510-5} 44-6 || 892-7) 44-0 23) 10 134-13 || 512-1| 49-1 || 852-4] 49-0 Apr. 16 2 O} 141-05 || 512-7) 47-6 || 933-4) 46-2 Apr. 30 2 O|| 140-53 || 526-7| 52-8 || 842-5| 51-5 5 0 137-75 || 533-4] 52-1 || 932-8] 49-2 5 0 138-34 || 535-4] 55-8 | 858-2] 54-1 } Apr. 17 20 O| 133-53 || 521-4| 43-2 || 881-6} 43-4 |May 1 20 0} 128-63 |) 530-0 47-9 || 863-3} 48-1 23 O| 134-13 || 503-5| 44-6 || 892-1] 44-2 23 0 134-70 || 520-4] 50-4 || 844-0] 49-8 | Apr. 18 2 O| 141-80 | 518-8] 52-6 | 873-7) 49-7 |May 2 2 0 142-88 || 532-1] 56-3 || 822.2) 54-6 5 0} 133-82 | 535-9] 59-7 || 924-2) 56-7 5 O 137-45 || 538-9} 60-0 || 840-9] 58-1 20 O 134-50 || 522-6} 49-4 || 858-0]. 49-4 20 O| 130-60 || 519-2| 47-0 || 866-6] 47-8 [ 23 O}| 136-68 || 507-9] 51-3 || 880-8} 50-6 23 30]| 136-82 || 519-6} 50-5 || 857-3} 49-9 Apr. 19 2 O| 144-35 || 529-0| 57-3 || 874-6| 55-3 |May 3 2 O|| 142-06 || 530-1| 56-1 || 843.9] 54-3 5 O} 134-38 || 540-4] 62-6 | 920-3] 60-2 5 O]] 136-93 || 534-2} 60-0 || 853-7) 58-2 20 O 129-37 || 518-0| 50-0 || 879-8) 50-1 20 O 131-22 || 527-0| 52-9 || 858-7] 53-4 23) 30 136-05 || 512-0] 52-6 || 865-5} 51-6 23 O 133-35 || 514-6] 53-1 || 845-0} 53-0 Apr. 20 2 O} 143-68 || 523-9] 59-4 || 852-3] 57-2 May 4° 2 0 138-96 || 527-3| 55-7 || 836-6] 55-0 5 O} 137-63 | 546-6} 64-8 || 894-9| 61-7 » 0 135-65 || 537-5| 58-8 || 841-1] 57-6 BIFILAR. k=0'0001248 g=0:000304= 2:44 Scale divisions. BALANCE. Mar. 214 20—April 164 k=0-0000118 g=0-:000073=6:20 Micrometer divisions. a April 174 —Oct. 84 k=0:0000130 g=0-000073=5°60 Micrometer divisions. April 154 20h, Gbservation 20™ late, caused by error in the house clock. April 224 204, The previous observations were made by Mr Russell; for the following I am responsible. J. A. B. May 22 23, Observation 30™ late, omitted while observing Polaris. DaiLy OBSERVATIONS OF MAGNETOMETERS, May 4—May 27. 1842. il Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of || Deciuina- || —————————_|_________] Mean Time of || Decnina- Declination TION. Cor- |Thermo-| Cor- |Thermo- Declination TION. Cor- |Thermo-| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. |] rected. | meter. Gat) ean. te Sc. Div. iS Mie. Div. © aviGhea tim a Se. Div. S Mie. Div. C May 4 20 O]| 127-94 || 523-8] 50-3 | 863-5] 50-2 May 16 20 O] 123-57 | 518-3] 55-8 || 850-4| 56-2 23 0} 134-60 || 512-3) 50-8 || 851-7] 50-6 23° 0. 128-17 || 539-5] 57-0 || 863-6| 56-8 May 5 2 0} 140-55 || 524-9) 52-8 | 833-8] 52-1 May 17 2 0 134-75 || 525-1] 59-9 || 894-6] 58-9 5 O} 136-37 || 536-3] 52-9 | 858-6] 52-3 5 OO] 129-30 | 529-6| 62-9 || 918-9} 61-2 20 O|] 126-46 |) 534-2) 51-1 | 857-6} 50-9 20 O|| 123-87 | 520-1) 52-9 || 864-1] 53-0 23 O|] 132-67 || 522-7) 53-0 | 828-9} 52-3 23 O| 127-30 | 508-5} 54-0 || 872-6| 53-8 May 6 2 O|} 136-82 || 547-2] 56-3 || 816-7| 55-2 May 18 2 O} 129-92 || 526-2} 57-8 || 868-4] 56-7 5 O|| 140-76 || 546-0] 57-6 || 850-4] 56-5 5 ©0| 128-77 | 537-6| 61-6 || 865-2) 60-2 ‘20 O 124-70 || 515-0} 50-3 | 871-8] 50-2 20 O| 121-38 | 523-3] 52-9 || 857-2) 53-0 23 O}] 133-17 || 508-2) 50-7 | 858-1] 50-6 23 O| 126-08 | 520-1} 52-9 || 840-8] 52-8 May 7 2 O} 140-87 || 525-2] 51-6 | 883-7) 51-1 May 19 2 O| 132-67 | 534.2] 53-7 || 866.2] 53-3 5 O]} 134-25 || 533-1} 52-3 | 894-9) 51-6 5 OO] 128-23 | 535-3] 54-2 || 903-7] 53-7 May 8 20 O| 130-15 || 519-0] 46-4 | 875-3] 47-0 20 OO} 122-20 | 523-4) 51-6 || 869-1| 51-2 23 O|}| 133-33 || 510-3} 47-9 | 863-3} 48-0 23 O| 126-82 | 525-7| 54-7 || 831-1] 53-8 May OF 2 O 137-70 || 531-4] 50-5 || 853-6] 49-6 May 90 2 O| 129-78 || 533-4) 58-5 |) 835.0] 57-1 5 O| 136-28 || 537-3] 52-5 | 872-2) 51-2 5 O] 127-90 || 539-1) 58-8 |) 854-6| 57-8 20 O} 127-23 || 509-9} 46-0 | 881-2) 46-6 20 O|| 125-28 || 523-4) 51-0 || 872.5) 50-9 23 O} 131-16 || 514-7] 48-9 | 853-6] 48-5 23 O|| 131-18 || 518-6| 52-6 || 839-7] 52-0 May 10 2 O} 1389-13 |) 535-2] 55-3 || 841-0) 53-7 May 91 2 O| 134-60 || 535-3) 59-1 || 846-8] 54-1 5 O} 133-48 || 541-1] 58-5 | 883-1] 56-8 5 0| 130-45 | 546-7| 56-4 || 864-7] 55-5 20m 0 127-30 || 523-3) 52-6 | 843-3] 52-5 May 22 290 O|| 123-33 | 529-6) 53-6 || 877-5| 53-7 23 0] 132-33 || 516-9) 54-3 | 845-5) 53-8 23 O| 130-05 || 521-4] 55-0 || 838-8] 54-6 May 11 2 O} 137-58 || 534-5) 56-7 | 851-7] 55-9 May OB oF 0 134-33 || 536-7| 57-1 || 828-5] 56-1 5 O|| 134-30 || 543-7| 57-4 | 855-7] 56-6 5 0] 132-53 | 543-9] 60-3 | 834.2] 58-9 20 O| 127-05 | 519-6| 50-0 | 848-6} 50-2 20 O| 123-40 | 526-7| 52-7 || 867-8] 52-7 23 O| 131-29 || 509-0} 49-8 || 853-4| 49-8 23 0 126-82 || 528-4] 55-8 || 828.2) 55-2 May 12 2 O| 1386-73 || 533-0| 52-3 || 841-7| 51-6 May 24) 2 0 131-98 || 546-3} 58-4 || 810-7] 57-4 5) 3) 133-13 || 541-9| 55-8 || 837-0] 54.4 5 ©] 130-18 | 543-7) 58-2 |) 841-9) 57-5 20 O 126-13 || 521-3] 49-8 | 876-6 | 49:9 20 O| 122-20 | 529-3) 53-4 |) 841-7] 53-1 2B LY) 131-32 || 518-3) 52-5 || 854-8) 51-9 93 QO} 128-23 | 527-3) 55-4 || 840-6| 54-6 May 13 2 0} 137-77 || 530-5| 58-9 | 816-6| 57-1 |May 25 2 0} 133-47 | 543-6| 58-7 || 822.8| 57-4 5 OO} 134-57 || 550-4] 62-7 | 821-1) 60-7 5 O| 130-18 || 551-7| 61-1 || 828-5| 59-7 20 OO] 125-55 || 525-5] 54-6 || 856-9! 54.9 20 O| 122-73 || 531-7| 52-9 || 842-4) 52-9 235. 0 130-67 || 526-0| 57-2 || 846-2 56-7 23 0 129-52 || 522-3) 55-4 || 838-1] 54-8 May Te BOC RS CRSA es tll eects 2 | eye |||) Be ree Ua May 96 2 O| 135-22 || 535-3] 59-7 || 813-3] 58-2 5 OO] 133-64 || 545-2] 65-5 | 826-7: 63-7 5 0] 130-12 || 537-2} 60-5 || 842-7] 59-3 May 15 20 0] 126-05 || 526-7] 54:5 | 849-4 55-1 20 O| 122-87 || 530-3| 53-7 || 847-7| 53-6 23 O} 131-38 || 522-4] 56-9 | 820-0 56-5 23 O| 130-12 || 516-7| 54-9 || 832-5) 54-5 May 16 2 O} 140-49 || 517-2] 62-7 | 898-9. 61-1 May 97 2 QO] 134-13 || 534-1] 58-4 || 833-1] 57-2 5 0} 149-71 || 574-3] 67-0 | 998-4 64.7 5 0] 129-98 || 543-3| 61-4 || 840-5) 59-9 BIFILAR. k=0:0001248 g=0-000304=2-44 Scale divisions. Bauance. April 174—Oct. 84 K=0-0000130 g=0-000073=5:60 Micrometer divisions. May 1245». Observation 3™ late. May 164 54. Extra observations. The observations of Declination at the following times are corrected for torsion by the quantities annexed to them. (See note, May 304.) May 164 28 till May 28¢ 55—10’93, May 234 20» till May 204 2018/.08. May 304 238’39. May 314 2h —2'15. May 314 5» till June 24 5h_1"95, June 24 20h till June 34 544047, May 231 22h, A fibre of the Declinometer suspension thread was found broken; it was removed by cutting near the top and bottom ties. May 24¢ 8», Extra observations. May 254 3h. Extra observations during thunder-storm. % 12 DAILY OBSERVATIONS OF MAGNETOMETERS, May 27—JuLy 22. 1842. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. Mean Time of || Decuina- | —————————|__————___ Mean Time of DEcLINA- || —_— | Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. Achh wan: ’ Se. Div.| ° ||Mic. Div] ° dohem Se. Div. Mic. Diy. May 27 20 0] 126-62 | 528-3| 54-8 || 848-4) 56.2 June 9 20 0 523-8 : 846-1 23 0] 130-45 || 523-8| 58-1 || 815-0) 57-8 23 0 | 526-2 : 811-8 May 28 2 0} 136-15 | 539-2 61-3 || 793-8| 60-5 | June 10 0 553-1 : 761-8 5 0] 131-92 | 543-3| 63-0 || 811-5} 62-3 0) 544-7 ; 786.4 May 29 20 0] 125-88 || 529-2; 55-8 846-4} 55-6 0; 529-4 ve 827-6 23 O|| 129-30 | 527-7| 57-4 || 824-7| 56-9 0 518-8 F 813-0 May 30 2 O| 130-32 | 544-3; 60-4 800-4| 59-4 | June 11 QO} 538-5 34. 801-6 5 O]| 128-43 | 545-1] 61-4 || 819-9) 60-3 0 551-5 re 802-5 20 0O|| 123-13 | 529-4] 55-4 || 841-0] 55-3 | June 12 0 533-6 ; 785-0 May 31 2 O] 130-52 || 542-1) 61-0 793-8| 59-8 | June 13 0 538-6 : 795-1 5 0] 129-52 | 547-9| 64-1 || 814-7} 62-6 0° 556-4 : 828-2 20 O| 123-60 | 531-7] 54-2 || 827-1) 54-4 0 522-1 : 772-9 23 O]| 127-77 || 530-4| 55-9 || 826-4] 55-7 0 509-2 }° 806-7 June 1 2 O| 132-93 || 540-3] 57-5 || 788-6) 56-8 0) 532-6 : 827-1 5 0] 129-78 | 549-5| 58-5 || 826-4] 57-9 0 563-9 cs 848-1 20 O|| 125-15 | 532-9| 54-1 || 821-8] 54-3 0 525-5 : 792.8 23 .0|| 127-77 | 531-5) 55-4 || 791-5| 55-1 § 0 520-2 : 807-3 June 2 2 O|| 135-48 | 549-0] 59-0 || 796-6| 58-2 | June 15 0 537-2 : 812-6 5 O| 132-53 || 547-5| 62-4 || 832-6| 60-9 0 550-3 . 803-0 20 O|}] 119-92 | 529-2) 54-8 || 854-6] 55-2 0 525-0] 61- 825-1 23 0|| 125-08 || 531-8] 56-9 || 840-4] 56-5 0; 526-8 3: 827-9 June 3 2 O|| 130-25 || 535-8) 63-6 || 804-0| 61-9 | June 16 0 534-8 . 813-6 5 O] 131-92 | 554-9] 68-5 || 824-4] 66-2 0 542-9 : 831-8 20 0] 123-93 || 526-8] 60-4 || 834-1] 60-5 0 526-1 5 843-1 23 0! 129-56 || 533-6] 63-0 || 797-2| 62-4 0 520-1 : 825-1 June 4 2 O| 134-44 | 549-4) 68-4 || 772-5) 66-7 0 540-3 : 807-5 5 O] 139-55 | 553-8] 70-5 || 771-9] 68-9 0. 540-5 : 827-0 June 5 20 0] 123-33 | 522-3] 59.2 || 834-7] 59-2 0. 528-5 o 835-3 23 0]| 130-92 | 516-1] 61-3 || 819-4] 60-6 0 528-4 : 824.3 June 6 2 0] 133-27 | 536-9] 65-3 || 811-0) 64-0] June 18 0, 538-3 ‘9 || 797-5 5 0} 128-81 || 543-1] 67-6 || 829-6) 66-3 0} 547-8 a 805-9 ZOO oneceeee. 517-5| 58-9 || 808-9] 59-2 | June 19 20 0 530-3 ‘0 | 849-5 23 0] 130-82 || 513-5| 60-4 || 835-7) 60-1 0 529-5 : 839-4 June 7 2 O| 137-68 | 531-2) 65-5 || 813-2| 64-0 | June 20 0 542-0 : 830-5 5 0O]| 129-62 | 548-8] 69.7 || 813-8] 67-8 0) 559-8] 63: 819-7 Re OW iDEA coooed- Ih seanac 819-3] 60-7 0 527-8 : 831-3 23 0} 127-00 || 526-2} 63-4 || 830-0| 62-9 0 524-4 824-0 June 8 2 O|| 134-83 || 535-4] 68-1 || 815-9| 66-8 0 536-3 e 784-8 5 0] 132-44 | 551-9) 70-7 || 804.4} 69-1 0 544-5 “e 796-3 20 0] 123-00 | 521-5] 59-4 || 817-4} 59-9 0 537-6 i 826-8 23 0] 128-65 || 523-0) 60-4 || 808-6} 60-4 0 523-6 | 5 804-6 June 9 2 O]] 138-05 || 526-4] 64-3 || 812-1] 63-3 | June 22 0 538°8 | : 785:8 5 Oj} 136-99 || 545-8] 66-5 || 834-2} 65-3 0 553-5} 66- 796-0 Birintar. k=0:0001248 g=0:000304=2'44 Scale divisions. BaLance. April 174—Oct. 84 k=0-0000130 g=0-000073=5'60 Micrometer divisions. DECLINATION. ‘Torsion removed. Circle reading. June 34 65, 215°, June 64 20h, 329°, (See note below.) June 184 6, 338°. June 204 21», 40°, May 302 204, The Declinometer magnet having been removed, and the brass bar inserted, in order to make the Dip observa- tion, the brass bar was allowed to move freely, to find if any torsion existed, when it went round about 400°. See Introduction for remarks on this torsion, and the correction of observations. June 67 20, Found two fibres of the Declinometer suspension thread broken, which had induced a considerable quantity of torsion. The fibres were cut off, and the torsion eliminated. June 184 64 ; 214 8h; 264 23h, Observations made to determine the value = for Declinometer thread. A DaiILy OBSERVATIONS OF MAGNETOMETERS, J UNE 22—JuLy 18. 1842. 13 Gottingen BIFILAR. BALANCE, Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- |_——_—_____ ||——__——_| Mean Time of DEcLINa- ||—________ | — Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. d=)) h-am: 4 Se. Div. 3 Mice. Div. GWM obs faa a Se. Div. 2 Mic. Div.' 2 June 22 20 0 123-02 | 517-3] 58-6 || 781-6} 59-2 July 5 20 O 128-90 || 517-8] 54-8 | 795-4) 55-1 23 0 127-81 528-4} 60-9 || 792-1) 60-7 2By (0) 126-33 || 529-8| 57-3 || 824-9] 56-6 June 23 2 0O 133-02 || 548-4| 64-7 || 796-0| 65-0 July OZ 10: 134-13 538-1! 60-4 || 808-1! 59-3 5. (0 129-73 || 549-2] 67-5 || 806-5| 66-4 5 «(0 131-38 542-6| 63-7 || 805-5| 62-1 20 O 124-04 || 515-3] 59-9 || 823-8) 60-1 20 O 125-79 || 524-1| 54-2 || 828-5| 54-6 23 0 126-43 || 509-3| 60-9 || 831-9} 60-7 23 0 126-25 || 520-6} 55-4 || 825-9} 55-3 June 24 2 0O 134-30 || 529-6| 63-4 || 846-2) 62-7 July WP 10 133-05 || 527-5| 57-9 || 824.9] 57-1 5.6 (OO 131-70 || 545-8| 65-2 || 827-6| 64-2 5 «(0 131-62 || 540-8} 58-6 || 831-7| 57-9 20 O 122-27 || 529-0] 58-2 || 818-1] 58-3 20 O 124-88 || 526-0} 54-3 || 845-5| 54-3 23 0 129-23 || 517-6) 59-1 836-7| 58-0 23) 0 126-35 520-1] 56-2 || 801-6| 55-7 June25 2 0O 129-18 || 542-1} 60-4 |} 812-9| 60-0 July S72 0 134-33 || 531-4} 59-9 || 816-2} 58-8 5 60 131-10 || 545-3| 60-4 || 818-6] 60-1 5 0 132-95 || 543-1] 61-4 || 815-5) 60-2 June 26 20 0 123-30 || 528-8| 58-2 || 820-6) 57-7 20 O 130-15 || 532-0) 56-4 || 697-8| 56-4 23; 10 127-63 || 526-6] 59-9 || 806-4| 59-2 23 0 130-05 525-7| 59-1 795-3} 58-3 June 27 2 0 134-79 || 543-0] 63-1 790-5| 61-9 July grr2 10 135-92 || 535-6| 62-7 || 829-7| 61-4 » 0 132-48 || 549-8| 65-7 || 798-6| 64-2 5 60 134-33 || 565-6} 65-1 861-7 O°7 20 O 124-13 || 531-4] 56-4 || 833-5] 56-7 July 10 20 0 127-54 || 520-8} 56-3 || 828-4] 56-3 23 0 126-94 || 521-7) 57-3 || 806-7] 57-1 73) (0) 129-78 || 505-5) 56-5 || 829-2) 56-4 June 28 2 0 133-93 || 532-8) 59-9 || 799-5| 59-2 July ID 136-57 531-9} 59-3 || 827-6| 58-5 a) 10 132-73 || 550-7| 62-5 || 815-9] 61-2 5 «(0 131-32 || 545-2] 62-4 || 834-4] 61-2 20 0O 124-42 || 537-7| 58-4 || 821-1] 58-3 20 O 124-04 || 532-3) 59-0 || 828-6] 59-1 23 0 128-74 || 530-7| 59-5 || 812-8| 59-2 23 O 126-90 || 524-2} 60-6 || 818-1] 60-1 June 29 2 0 133-05 || 546-7| 61-4 | 791-7) 60-5 July 1 2) 0) 135-53 || 541-:0| 64-6 || 804-7] 63-3 5 0 132-78 || 550-4] 63-1 787-7| 62-2 a 60 131-83 || 553-6) 66-8 || 815-5] 65-3 20 O 121-98 || 534-8) 57-9 || 807-8} 56-9 20 0 123-80 || 534-7] 60-3 || 820-2} 60-2 23 0 128-85 527-3| 59-6 || 790-0] 59-1 7433, (0) 126-48 || 523-4) 62-5 || 829-1] 61-6 June 30 2 0O 133-48 || 540-1] 64-2 || 772-6| 62-7 July 13> 2) 40 131-78 || 535-6| 65-1 790-8| 64-0 5. (OO 133-27 || 546-4] 66-4 || 785-0] 65-1 o 0 131-60 || 545-4] 66-3 || 810-6} 65-3 20 O 123-75 528-1] 59-8 || 786-1 59-9 20 O 122-45 526-4| 58-3 || 833-5] 58-5 2a 10 131-96 || 523-5] 62-5 || 790-8| 61-8 23 0 129-41 521-0} 59-3 || 830-4] 59-2 July tens?’ 0 136-52 || 543-0! 66-1 757-7| 65-0 July 14°32 0 131-00 | 528-3] 61-4 | 805-5} 60-6 5 60 133-50 || 549-8} 68-4 || 805-7| 66-9 a 5 129-80 || 539-6| 63-5 | 813-4} 62-3 20 O 126-39 || 479-9| 58-4 || 618-5| 58-7 ; 20 O 125-23 || 535-5) 56-8 || 818-1] 56-7 23 0 130-65 || 502-1] 58-4 ||-731-7| 58-5 23 «0 128-83 || 530-6| 59-1 796:5| 58-4 July eat 0 138-01 542-4] 60-0 || 809-6! 59-9 July lao —0 133-24 || 540-4] 64-4 | 788-0] 62-8 Sy (8) 137-41 559-0| 61-6 || 799-2] 61-2 a 60 130-72 || 551-1] 68-7 || 789-2| 66-7 July on20) 10 132-20 || 443-6] 56-4 || 522-6] 56-4 20 O 122-65 524-8} 60-2 || 801-6| 60-4 23 0 133-27 || 502-6] 58-2 || 742-1| 57-9 23 0 128-20 || 527-2} 63-3 | 786-3) 62-5 July 4 2 0 123-90 || 625-6| 60-5 ||1062-8| 59-9 July 6m 32" 0 133-00 || 545-2] 68-6 || 780-0] 67-1 5 0 129-49 || 573-9] 62-5 || 959-3] 61-7 5 (0 129-49 || 548-0| 71-6 || 795-2| 69-7 20 O 123-20 || 512-2} 59-0 || 831-0) 59-2 | July 17 20 O 122-80 || 532-8} 59-9 || 825-2] 59-9 23 0 135-65 || 501-6] 61-1 848-9| 60-5 23. 0 128-77 || 525:0| 61-7 || 805-0| 61-1 July Sere 20 134-86 || 531-5| 62-6 || 812-6|. 61-9 July US Y2: TO) 135-08 536-5 | 63-9 || 784-7| 62-9 5 (OO 132-27 || 530-4] 63-4 / 826-4| 62-7 5. (0 131-78 542-3} 65-8 | 796-7! 64-5 BIFILAR. k=0:0001248 g=0:000304=2:44 Scale divisions. Batance. April 174—Oct. 84 k=0:0000130 y=0-000073=5-60 Micrometer divisions. DECLINATION. Torsion removed. Circle reading 40°. June 244 7h, 57°. June 264 20h, 230°, (See note below.) June 274 20%, 235°. July 1¢ 7», 312°. July 44 20h, 312°. July 82 8h, 342°. July 154 8h, 4°, June 264 20%. A fibre of the Declinometer suspension thread found broken ; removed after the observation ; when the torsion was tried, its effect was found equivalent to + 7-79. The reading at 20% was therefore corrected by —7"79. July 14—44, Extra observations. July 9455, Extra observations. July 1425", Observation 5™ late. Instruments quite stationary. MAG, OBS. VOL. I. 14 DAILY OBSERVATIONS OF MAGNETOMETERS, JuLY 18—AveusrT 12. 1842. Cor- iiernto- Gottingen Mean Time of DECLINA- Declination TION. Observation. rected. aia hae 2m. 4 Se. Div. July 18 20 OO} 125-88 || 537-2 23 O}] 129-05 || 534-0 July 19 2 O}] 134-75 || 530-2 5 O|| 132-82 || 544.4 20, 0 132-40 || 523-2 23 O|} 130-30 || 521-4 July 20 2 O} 1382-27 || 540-3 ; 5 0} 132-30 || 547-3 20. O|} 120-93 || 530-8 23 O}] 125-22 || 526.9 July 91 2 O|} 132-38 || 538-9 5 0O} 130-52 || 543-8 20 O} 121-15 || 527-3 23 OO] 125-55 || 527-4 July 22 2 O|] 133-67 || 548-1 5 O| 132-84 || 558-7 20 O|| 131-75 || 521-0 23 O]} 128-88 || 524-7 July DQ3ie2y 10 136-45 || 542-4 5 O 130-73 || 571-7 July 24 20 O 123-05 || 528-9 23 0O]] 128-87 || 519-1 July 25 2 O|f 135-22 || 538.3 5 0} 130-83 || 545-3 20 OO} 122-87 || 529-2 23 0 130-09 || 523-3 July 26 2 O] 134-83 || 544-1 5 0} 130-83 || 548-8 20 O|} 121-38 || 528-9 23 O 128-54 || 527-9 | July 27 2 0] 136-95 || 542-9 Sy (0) 132-91 || 553-8 20 O|} 123-00 || 530-4 23) (0) 127-23 || 525-6 July 28 2 O} 135-03 || 544-8 5 0} 131-90 || 551-2 20 O 122-70 || 524-6 23 O|| 126-80 || 520-2 July 29 2 O| 134-48 || 555-1 5 O|| 134-07 || 547-7 20 O|| 123-87 || 524.5 23 0O|| 127-87 || 521-6 July 30 2 O]} 133-13 || 540-5 5 0] 132-31 || 554-2 BALANCE, DECLINATION. BIFILAR. meter. 59-5 59-8 61-3 62-7 56:8 57-1 Cor- rected. 772-9 792-2 800-0 808-4 794-7 806-6 798-9 816-3 803-5 786:5 794-1 798-5 822-0 819-9 794:8 807-9 779-3 800-7 801-6 825-9 783-9 786-8 782-5 788-7 798-2 780-6 761-0 783°9 794-8 780-9 773-5 793-2 798-7 798-8 BALANCE. Mic. Div. Gottingen Mean Time of Declination Observation. ah. July 31 20 23 - 10 BIFILAR. April 174—Oct. 84 k=0-0000130 g=0-000073=5-60 Micrometer divisions. (See note below.) July 204 64, 80°. B ecoo Sooo Soceo cooo coca Sooo ooo oeseoc Seco coco eso. 2 k=0-0001248 g=0:000304=2'44 Scale divisions. Torsion removed. Circle reading ARS July 194 205, 61°. Cor- rected. BALANCE. Therm meter. BIFILAR. DECLINA- TION. Cor- /Thermo- rected. | meter. 4 Se. Div. . 124-27 || 519-1| 60-9 129-69 || 519-9| 63-4 130-72 || 555-0} 69-5 134-75 564:6| 74-3 124-72 || 527-5) 62-5 127-80 || 531-7| 65-7 135-20 541-5| 67-7 130-90 || 543-8) 70-7 126-00 || 528-4] 58-8 127-98 || 531-0| 61-8 133-38 541-6| 68-0 128-47 | 545-5| 70-6 125-62 || 530-0} 61-3 128-30 || 518-5] 61-2 132-65 539-7 | 63-5 129-49 || 557-9| 65-6 128-40 || 531-3] 62-3 138-92 || 517:3| 64-7 136-95 || 548-4! 67-0 131-65 548-0] 67-4 131-78 506-9} 56-9 125-82 || 494-9] 58-8 134-82 || 529-2] 62-6 124-07 || 531-6} 65-6 123-13 532-1| 57-9 129-08 | 519-5] 59-8 132-51 540-0} 64-0 129-49 || 548-6] 65-4 124-59 || 533-3] 62-8 126-98 || 530-0] 64-9 133-05 || 533-2] 67-9 130-18 || 547-1} 69-9 124-62 || 537-2] 63-8 127-47 || 526-8| 66-8 132-55 542-3 | 72-1 128-97 || 551-4] 73-2 123-82 || 526-8| 63-9 126-32 || 525-3] 62-8 132-80 || 537-6| 64-6 129-92 || 556-5| 643-5 123-07 || 530-3| 60-7 137-12 || 518-2| 62-8 134-20 || 537-4] 65-6 129-82 || 542.7 . 74, 101°. July 254 214, 108°. July 294 64, 118°. Aug. 14 214, 110°. Aug. 5464, 124°. Aug. 84 21%, 118°, July 184 20%, A fibre of Declination suspension thread found broken. torsion by — 335. July 194 5». July 204 5h, Aug. 14 23h, A thread prepared on May 26, and having a brass weight suspended by it since, was now inserted. This thread is composed of 20 fibres, instead of 16, as formerly. The torsion was completely removed. Brass bar left in during the night. July 194 20%, Observation of Declination 43™ too late, delayed during the elimination of torsion. The Bifilar reading is 53™ too late ; omitted accidentally. July 224 20h; 294 5h; 314 20h; Aug. 44, Observation 30™ late. Extra observations. Mie. Diy. 714-0 789-6 798-1 772-2 784-0 758-1 756-3 763-0 799-4 778-3 758-8 761-2 788-2 780-0 774-7 773-0 729-3 766-7 760-2 793-0 714-8 792-4 794-2 880-9 774-6 787-7 786-7 791-2 770-2 7553 765-3 762-0 779-6 769-0 746-6 754-6 753-9 770-1 790-4 784-8 771-1 772-5 764-7 784-8 Torsion removed. Observation at 204 corrected for July 224 61-3 62-8 67-7 72-0 62-9 65-2 66-7 69-2 59-4 61-3 66-5 69-0 61-7 61-5 62-9 64-7 62-0 63-8 65-8 66-5 57-3 58-6 61-6 64-1 08-1 59-3 62-7 64-1 62-7 64-1 DAILY OBSERVATIONS OF MAGNETOMETERS, AUGUST 12—SEPTEMBER 7. 1842. Li Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. Mean Time of Drcuina- || ———_————_ ||_——-|_ Mean Time of DECLINA- ||_-—_@___ ——$—_ | —__—__—_— Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION, Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. | doh m. f Se. Div. Y Mie. Div. o d. h. m. : Se. Div. S Mic. Div. 3 Aug. 12 20 0|| 125-17 || 536.3| 64-5 | 769-3| 64-2 | Aug. 25 20 0] 121-55 || 530-6] 57-9 || 801-9] 57-8 | 23 0}] 128-83 || 531-5| 66-1 || 754-8] 65-4 23 0} 127-75 || 529-3] 59-4 || 777-2] 58-9 § | Aug. 13. 2 O|]| 132-33 || 537-4] 69-0 || 748-9] 67-8 | Aug. 26 2 0O]| 133-60 || 546-2] 61-5 || 768-4] 60-6 | 5 0] 126-87 || 541-7| 68-6 || 775-6| 67-8 5 0|| 128-54 || 552-7] 63-8 || 783.9] 62-5 Aug. 14 20 0|| 123-64 || 530-8) 61-9 794-1| 62-2 20 Oj] 123-00 || 533-8) 60-5 || 759-1] 60-7 23 O}] 127-94 || 530-0| 64-1 || 769-8] 62-7 23 O|| 124-85 || 525-8] 60-8 || 759-7| 60-9 Aug. 15 2 0] 131-82 || 540-5 70-7 || 749-0| 69-3 |} Aug. 27 2 O|] 131-45 |) 542-7] 64-4 || 751-8] 63-9 5 O|] 126-85 || 547-3) 73-7 || 778-7| 72-2 5 0|| 127-43 || 556-9| 66-7 || 753-7| 65-8 20 O|] 123-22 || 528-8) 62-5 || 782-1] 62-7 | Aug. 28 20 0] 120-38 || 531-9] 60-0 || 794-8] 60-0 23 O|] 128-40 || 526-4] 63-6 || 772-0| 63-3 23 O}] 127-97 || 523-7| 61-4 || 781-7) 61-1 Aug. 16 2 0] 132-51 | 540-3} 65-5 763-4| 64-7 | Aug. 29 2 O]|| 133-55 || 544-4) 66-4 || 750-9] 65-2 5 O|| 127-78 || 546-6| 66-9 || 769-3| 66-0 5 O|| 127-57 || 549-3) 71-6 || 746-5| 69-8 20 O]| 120-15 || 532-2} 61-3 || 758-2) 61-2 20 O| 122-85 || 529-8| 62-9 || 775-9) 63-2 23 0|] 130-63 || 535-6] 62-8 || 733-3| 62-3 | Aug. 30 0 Oj] 130-98 || 530-9| 63-6 || 744-9] 63-6 Aug.17 2 0] 136-95 || 552-3} 67-7 || 740-1) 66-2 2 O|| 132-64 || 539-8| 64-5 || 759-2) 64-1 5 O|] 130-22 || 558-4) 74-1 || 730-1) 71-9 5 0O|| 126-25 || 540-5] 64-1 || 781-1] 64-0 20 0) 126-22 || 528-5) 66-4 || 711-8} 66-6 20 O}] 123-50 || 526-4) 52-8 || 790-1] 53-5 23 O|] 133-77 || 518-0] 68-7 || 738-6} 68-1 23 O|| 127-72 || 524-3) 54-6 || 790-8] 54-5 Aug. 18 2 0O|| 134-07 || 541-9| 75-1 || 720-6| 73-6 | Aug. 31 2 Oj] 131-05 |) 540-7| 59-9 || 759-0| 58-7 5 O|| 127-85 || 558-3} 79-0 || 807-2) 77-1 5 0O|| 127-00 || 548-0! 63-7 || 767-4| 62-0 20 O|| 127-83 || 516-0} 69-6 || 755-0] 69-8 20 O|] 121-84 || 533-9) 56-0 || 788-7| 56-2 23 0} 132-53 || 523-3) 70-4 || 715-6| 70-2 23 O|| 127-61 || 527-1) 56-9 || 765-8| 56-7 Aug. 19 2 O|| 129-30 || 567-9} 71-4 || 764-4) 70-9 |Sept. 1 2 O|| 131-78 || 544-4] 60-5 || 758-3) 59-5 5 O]|] 125-05 || 595-2) 72-0 1123-6] 71-6 5 O|| 124-52 || 551-2! 63-5 || 771-1] 62-2 20 O|| 124-20 || 519-8) 64-9 || 799-8| 65-2 | 20 O|| 123-87 || 542-4] 64-0 || 748-3) 63-4 23 O]}| 135-62 || 518-4| 65-4 || 774-7| 65-4 23> 0O|| 131-72 || 523-8} 64-9 || 760-2| 64-2 Aug. 20 2 0O}| 135-59 || 536-4] 65-2 || 775-2) 65-3 | Sept. 2 2 O|| 132-42 |) 538-8) 65-7 || 766-9| 65-2 5 O|| 128-57 || 538-8] 64-9 || 799-3) 64-9 | 5 O|| 130-96 || 542-5| 66-2 || 849-2| 65-7 Aug. 21 20 0|| 123-84 || 519-4) 56-7 || 802-5| 57.2 20 O}| 125-65 || 533-9) 63-4 || 747-2) 63-3 23 O}] 130-22 || 519-3) 57-7 || 794-8] 57-8 23 O|| 129-89 || 520-3) 63-9 || 761-4| 63-7 Aug. 22 2 0O|| 137-18 || 545-0| 62-7 || 779-8) 61-4 |Sept. 3 2 0]|] 133-67 || 536-2) 65-0 || 781-5| 64-6 5 0 || 129-60 || 552-5) 66-7 || 790-5| 65-0 5 |) 125-60 || 539-4] 64-9 || 790-8] 64-6 20 0|| 123-04 || 527-2} 59-4 | 786-0| 59-6 |Sept. 4 20 O]| 125.22 || 517-4| 54-4 | 770-1) 54-8 23 O}] 133-20 || 521-7) 61-9 || 781-7| 61-5 23 O|| 130-60 || 530-6| 55-6 || 775-6| 55-6 Aug. 23 2 0O|| 132-50 || 547-5| 68-3 || 756-8] 66-6 Sept. 5 2 O|| 134-20 || 539-2) 58-4 || 776-1] 57-5 5 O|| 130-18 || 542-6] 72-2 || 756-0) 70-4 5 O|] 129-25 || 553-4) 59-8 |) 803-2} 58-9 20 O| 122-91 || 534-7| 64-6 | 773-3] 64-9 20 O|}| 125-50 || 532-5) 57-6 || 772-7| 57-7 23 0} 128-74 || 529-1| 63-6 || 762-3] 63-8 23 O|| 132-37 || 519-8] 58-7 || 768-4| 58-4 Aug. 24 2 0|| 137-68 || 540-4| 63-4 || 772-1] 63-5 Sept. 6 2 O/| 133-10 || 543-3] 61-3 || 768-3| 60-6 5 O|] 131-80 || 538-5) 63-5 || 845-8] 63-5 5 O|| 127-85 || 546-4] 62-5 || 795-2] 61-7 20 O|| 123-84 || 522-3) 53-6 | 798-2] 53-2 20 O|| 124-82 || 524-1) 52-6 || 793-6] 53-1 23 0O|] 130-09 || 520-9} 54-8 || 799-4] 54-6 23 0|| 130-32 || 519-7] 54-3 || 794.2) 54-2 Aug. 25 2 O|] 134-28 || 544-4) 60-4 || 785-1] 59-1 Sept. 7 2 O|| 134-18 || 543-9] 58-3 | 768-6| 57-2 5 0} 128-27 || 548-9| 63-6 || 804-7] 61-8 5 O]| 127-85 || 546-3) 62-4 || 782-8| 60-7 BIFILAR, k=0:0001248 g=—0:000304—2-44 Scale divisions. BALANCE. April 174—Oct. 84 k=0-0000130 g=0:000073=5'60 Micrometer divisions. DECLINATION. Torsion removed. Circle reading 118°. Aug. 154 21h, 123°, Aug. 224 21h, 136°. Aug. 294 214, 147°. Sept. 54 21, 147°. Aug. 164 20; 194 5h; 244 5h; Sept. 24 3h_9; Sept. 54 6, Extra observations. Aug. 224 7%, Observation to determine the value of + for the Declinometer thread. Aug. 264. Wind vane put up in Observatory. Aug. 304 04, Observation 1» late, by mistake. RE RE RS BR ARR ERS AS RE RRR SSR a RS A AS + 16 DAILY OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 7—OCcTOBER 5. 1842. Gottingen BIFILAR. | BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of || Decuina- | ——_~-————_|—_____]_ Mean Time of __ || Decuina- eS | Declination TION. Cor- |Thermo-| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. d oh m. 0, Se. Div. ° Mice. Div. o diy ieeeetn: y, ° Se. Div. || Mic. Diy. = Sept. 7 20 O} 125-33 || 535-4) 57-2 775-1| 57-3 | Sept. 21 20 0} 130-16 || 534-3) 59-9 | 773-1] 61-1 23 O| 129-32 | 523-4| 57-8 || 777-5| 57-7 23 0} 136-30 | 528-3] 60-6 | 769-4] 61-7 Sept. 8 2 O| 134-08 || 536-6] 58-9 773-4| 58-7 Sept. 22 2 OO} 140-23 | 548-5] 62-5 | 750-8] 62-5 0|| 128-28 || 550-9} 60-5 | 793-7| 59-9 5 0] 134-42 || 544-5] 61-4 || 786-6| 62-7 20 O|] 124-27 || 529-2) 55-4 || 793-6] 55-6 20 O| 132-30 || 538-2| 56-0 || 757-3] 56-4 23 OO} 129-37 || 518-2] 55-8 | 786-7| 55-8 23 0] 136-37 || 525-1] 57-4 | 794-4] 57-2 Sept. 9 2 O|| 135-48 | 534-8} 59-0 769-4] 58-2 Sept. 23 2 O} 133-13 | 539-2] 58-6 | 785-3] 58-2 5 O|] 127-00 || 557-8| 62-1 || 833-6} 60-7 5 0} 127-83 | 540-8] 58-9 | 811-5] 58-5 20 O]] 125-46 || 529-8} 55-5 || 792-3] 53-7 20 O| 124-59 || 535-8] 54-2 | 778-2] 54-3 23 O|] 130-43 || 525-5| 56-5 || 790-1] 56-4 23 0} 127-14 || 526-8| 53-8 | 784-0] 53-9 Sept. 10 2 O} 134-33 || 541-5] 59-4 || 781-1} 58-7 Sept. 24 2 O} 131-80 | 537-8| 54-1 | 775-5] 54.0 5 O]| 129-69 || 542-6] 61-3 || 779-5} 60-3 5 O} 128-81 || 544-3] 59-4 | 804-6] 59.2 Sept. 11 20 0} 125-62 || 531-2] 55-5 755°7| 55-6 Sept. 25 20 O| 122-20 | 531-1] 52-0 | 791-4] 51-8 23 0O]] 127-63 || 526-0| 56-2 || 777-8} 56-1 - 23 O| 125-32 | 526-5| 54-2 | 785-8] 54.0 Sept. 12 2 O| 135-08 || 532-9] 58-8 || 773-8| 58-1 Sept. 26 2 O|. 130-22 || 541-3} 58-8 || 766-3] 58-8 5 0] 127-83 | 545-3} 61-8 || 775-0} 60-3 5 O| 127-68 || 549-0] 61-7 | 766-1] 62-2 20 OO} 122-70 | 519-2} 53-9 || 785-4} 54-1 20 O| 123-80 || 533-4] 52-3 | 784-6] 52-6 23 O|| 133-24 || 508-8; 54-8 || 802-7] 54-8 23° 0} 126-52 || 522-6} 52-6 | 783-1] 52-8 Sept. 13 2 O|] 138-95 | 548-9] 57-7 || 785-5| 56-7 Sept. 27 2 O|} 134-00 || 538-4] 55-3 | 762-4] 54-6 5 OO] 127-17 || 542-9} 60-8 || 800-1} 59-4 5 O| 128-97 || 548-0} 57-6 | 788-2] 57-5 20 O|} 125-03 | 535-6] 59-2 || 746-4] 59-1 20 O} 123-95 || 536-5} 50-5 || 795-5| 50-5 23 0O|| 130-78 || 527-5| 60-4 || 762-5| 59-9 23 OO} 126-43 || 526-1| 50-4 | 778-6] 50-2 Sept. 14 2 O| 133-60 || 541-2) 63-4 | 763-7) 62-3 Sept. 28 2 OO} 132-13 |) 541-6| 57-5 | 767-9] 57-8 5 0} 129-56 || 550-6| 65-4 || 766-0} 64-2 5 O] 128-65 | 547-3} 58-9 || 771-1] 59-3 20 O| 126-68 || 530-1] 60-6 || 762:6| 60-7 20 O| 122-82 || 539-0} 50-0 || 754-8| 50-2 23 0] 131-49 || 529-4] 60-6 || 758-6] 60-7 23 OO} 135-65 || 503-7| 50-9 || 786-6| 51-0 Sept. 15 2 O| 134-47 || 540-4) 63-6 757:°7| 62-8 Sept. 29 2 O} 133-51 | 536-6] 53-5 || 816-9] 53-0 5 O} 127-20 | 538-6} 65-0 || 781-5] 64-2 | 5 O]} 128-23 || 544-6] 59-9 | 849-7] 59.3 20 O]| 133-98 | 528-7| 59-6 || 758-7| 59-7 20 O| 127-63 || 524-5| 47-5 || 779-7] 48.2 23 O|] 134-30 | 530-8] 60-8 || 768-3] 60-6 23 O] 126-25 | 531-2| 48-8 || 791-3] 48-0 Sept.16 2 0] 136-22 | 536-8] 63-9 || 789-6| 63-0 Sept. 30 2 O| 131-45 || 531-7| 53-8 || 785-2] 52-6 5 O| 128-97 || 542-2) 65-8 || 791-0| 64-7 5 O} 1380-50 | 528-1] 55-8 || 813-6] 54-4 20 0] 131-32 | 536-7| 59-4 || 708-8] 59-7 20 O| 126-43 || 531-8} 46-7 | 778-5) 47-3 23 O|| 136-50 || 528-3) 60-7 || 753-0] 60-5 23 0} 129-17 || 523-7! 47-5 || 795-4| 47-6 Sept. 17 2 O|| 133-62 || 542-4] 62-3 | 780-5| 61-7 | Oct. 1 2 O] 130-80 || 535-9] 51-0 || 775-2] 50-1 5 O]] 129-37 || 541-5] 62-5 || 799-1] 62-2 5 O} 129-01 || 538-7| 53-5 | 776-6| 52-3 Sept. 18 20 O| 130-45 | 528-5] 53-4 || 773-6] 53-6 |Oct. 2 20 OO} 126-94 | 536-2] 51-7 || 761-3] 51-7 23 O|] 132-27 || 526-2} 53-8 || 789-7| 53-8 23 0} 127-90 || 528-0] 51-8 | 772-3] 51-7 Sept. 19 2 O| 133-73 || 542-8] 55-9 || 778-2] 55-4 ]Oct. 3 2 O]] 132-25 || 538-0] 52.6 | 769.2] 52-1 5 OO] 127-70 | 542-9| 60-1 || 790-0) 58-4 5 O} 130-25 | 536-1] 53-0 | 775-8] 52-3 20 O| 124-62 || 529-2} 54-0 | 776-1) 54-1 20 O|} 124-93 || 536-1] 43-5 || 772-7| 44.3 23 O]] 135-45 || 524-1| 54-8 | 764-7| 54-7 23 O|} 128-40 || 520-1] 43-5 || 792-4] 44.0 Sept. 20 2 0] 137-83 || 550-2| 58-5 || 756-7| 57-5 |Oct. 4 2 O| 133-77 | 539-8] 48-6 || 777-7| 47-6 5 0] 135-52 || 545-5| 62-4 || 791-5] 60-4 E 5 OO] 129-78 || 546-6] 52-9 | 784-7} 51-0 20 0] 135-42 || 525-5] 50-4 || 756-7] 50-8 20 O} 125-82 || 535-3) 45-9 || 779-8| 46-1 23 0] 133-13 || 521-9| 52-3 || 777-2) 52-6 23 O}| 127-58 || 526-6| 47-5 | 783-1| 47-1 Sept. 21 2 O|| 137-30 || 539-0! 58-6 || 768-6] 58-1 |Oct. 5 2 O] 132-27 || 540-7] 51-9 || 766-4| 50-6 5 Oj 130-75 || 544-3) 61-4 || 808-2) 60-4 5 0] 132-77 || 547-7| 53-9 | 777-6} 52-5 Biri~ar. k=0°0001248 g=0°000304=2'44 Scale divisions. BaLANncre. April 174—Oct. 84 k=0-0000130 g=0-000073=5:60 Micrometer divisions. DECLINATION. Torsion removed. Circle reading 147°. Sept. 94 6», 147°. Sept. 124 214, 127°. Sept. 164 20h, 137°, Sept. 234 65, 153°. Sept. 264 21h, 146°. Oct. 34 214, 157°. Sept. 264 5» till 214 8h. Extra observations hourly. | DAILY OBSERVATIONS OF MAGNETOMETERS, OcTOBER 5—NOVEMBER 2. 1842. Gottingen Mean Time of DECLINA- Declination TION. Observation. fe! a 5 u Oct. 5 20 0 125-37 2am 0 129-35 Oct. 6 2 0 134-11 5 O| 130-18 20 0 124-59 23 0 127-27 Oct <7 72. 0 135-59 5 0] 130-23 20 O 126-12 23 0 ||. 132-25 Oct. 8 2 O} 136-80 5 60 129-23 Oct. 9 20 0 124-65 23 0 128-63 Oct. 10 2 O} 131-98 on 0 126-45 20 O 124-95 235) 0 128-10 Oct. 11 2 O| 130-89 ao» 0 126-26 20 O| 124-42 23 O]}] 125-92 Oct. 12 2 O} 131-36 5 O} 126-28 20 O 124-35 23 O| 127-50 Oct. 13 2 O}] 134-50 5 O|} 133-30 20 O|]] 132-97 23 0 125-99 Oct. 14 2 0 131-89 5 0 133-44 20) 0 125-42 23) 0 130-18 Oct. 15 2 O| 132-50 or 0 127-20 Oct. 16 20 O]| 126-05 23 0} 128-80 Oct. 17 2 O]| 132-27 5 OO} 116-43 20 O|} 126-46 yas NY 126-45 Oct. 18 2 0 130-92 5 OO} 126-30 20 O] 122-84 23 O} 130-22 Oct. 19 2 O| 134-30 5 60 128-17 BIFILAR. BALANCE. Gottingen Mean Time of Cor- |Thermo-|| Cor- |Thermo- Declination rected. | meter. || rected. | meter. Observation. Se. Div. g Mie. Div. C d. oh. m. 540-5| 50-0 || 760-8) 50-0 Oct. 19 20 O 525-3| 50-8 || 765-3| 50-5 | 743 (0) 540-2| 54-2 || 758-6| 53-1 Oct. 20 2 0 542-1| 55-2 || 781-7) 54-3 5.6 (OO 541-4} 50-8 || 763-7| 50-6 20 O 525-5| 52-4 | 766-1| 51-8 23 O 535-8| 54-9 || 752-7] 54-0 Ociee Zit 22s (0 551-1} 57-3 || 750-4] 56-1 5+ 0 528-8| 45-8 || 776-3| 46-6 20 O 518-5| 45-8 || 780-9} 46-5 2a1, 0 540-7| 49-7 || 783-9| 48-8 Oct 225 525 0 550-5| 56-3 || 784-7] 54-1 bye) 538-0| 50-5 || 754-6| 50-3 | Oct. 23 20 0 532-7| 51-6 || 746-8) 51-1 23" 0 544.3| 54-4 || 746-3] 53-3 |Oct. 24 2 0 542-8| 56-4 | 744-1) 55-3 a» 0 541-5| 53-6 || 747-8) 53-1 20 O 535-7| 55-4 || 742-3) 54-6 Peay XN) 544-7| 60-0 || 726-3] 58-7 Oci= 250825 0 547-7) 62-9 || 729-3| 61-2 ay (0) 535-0| 47-8 || 758-6| 48-6 20 0 519-3| 47-7 || 771-7| 48-0 23 0 534:9| 52-1 758-8| 51-1 ]Oct. 26 2 O 547-9| 57-4 || 744-3] 55-4 » 0 535-4| 44-3 || 762:0| 45-1 20 O 536-7} 48-1 786:8| 49-0 23 0 542-1| 59-9 || 719-0| 59-5 | Oct. 27 2 O 542-3| 60-5 | 815-2| 59-6 5 0 531-8| 50-59] 750-8| 50-7 20 0 527-5| 51-6 || 758-8| 51-4 Zon 0 538-4| 55-7 || 742-4) 54-6 ]Oct. 28 2 0 532-7| 57-5 || 826-6] 56-5 5; 0) 536-6} 51-9 || 755-1| 52-0 20 O 528-0] 52-7 || 757-7| 52-4 3) M0) 544.5| 57-3 || 749-1| 55-9 ]Oct. 29 2 O 547-4] 60-6 || 739-1] 59-0 5 0 534-4| 50-0 ||, 749-7| 49-9 | Oct. 30 20 0 518-3} 49-8 || 755-0| 49-7 23 0 537-6| 50-7 || 763-6] 50-3} Oct. 31 2 0 547-0| 51-0 || 792-3| 50-6 5 0 529-3| 46-5 || 758-1] 46-9 20 0O 523-7| 46-0 || 762-1| 46-4 23 0 548-7| 57-4 || -747-5| 57-9 | Nov. 1 2 0 542-2| 57-5 || 767-2) 57-6 5.6 (OO 524-1) 41-2 || 754-9} 42-1 20 O 525-0} 41-7 || 866-0) 42-2 723) 8) 530-2} 43-1 880-6| 43:3 |] Nov. 2 2 0O 539-2} 44-5 || 784-2} 44-0 5.6 (0 BIFILAR. DECLINA- TION. 126-15 131-22 135-86 130-98 125-68 . 127-50 133-65 126-82 124-48 127-85 132-58 126-90 124-40 130-05 133-07 126-52 124-86 127-80 130-78 127-10 125-86 129-72 131-92 128-60 128-41 130-23 136-53 129-53 128-70 129-30 131-50 130-47 125-99 127-32 || 131-45 128-95 125-15 125-60 129-08 124.95 124-95 127-67 130-47 127-34 126-28 129-50 133-88 130-16 k=0°0001248 g=0'000304=2-44 Scale divisions. BALANCE. April 174—Oct. 84 £=0:0000130 g=0-000073=5-60 Micrometer divisions. 94_Dec. 314 k=0:0000143 g=0'000073=5:10 Micrometer divisions. Oct. 244 215, 173°. Oct. ” DECLINATION. Torsion removed. Circle reading 157°. 314 214, 186°. Oct. 174—184, Oct. Extra observations. MAG, OBS. VOL. I. Oct. 104 214, 166°. Oct, 234, Oct. 174 214, 166°. Anemometer erected. 17 3IFILAR. BALANCE. Cor- |Thermo-|| Cor- /Thermo rected. | meter. || rected. | meter. Se. Div. 5 2 Mic. Div Y 536-3| 49-1 || 773-5) 51-6 529-3| 50-7 | 757-1] 52-6 545-7| 53-0 || 759-3] 54-2 550-7| 54-9 || 763-1] 56-2 524-5| 42-0 || 758-1] 44-0 526-4| 44-7 | 786-2} 46-2 541-1} 51-3 | 766-0} 51-6 546-1} 52-5 | 775-1] 52-9 535-6} 47-1 || 756-3] 45-7 517-7| 46-0 || 766-1] 47-0 | 535-0| 47-7 || 767-3] 47-9 540:9| 48-2 | 766-2] 48-2 529-8} 43-0 || 768-3) 42-8 521-0} 438-2 || 787-2) 43-7 533-9] d1-1 773:0| 51-6 538-0} 52-6 || 776-6} 53-0 530-4| 38-6 || 762-9} 40-1 524-6] 38-0 || 775-0] 39-1 541-2| 47-2 || 776-4| 48-5 534-8| 49-8 | 785-5] 50-7 531-5| 38-6 || 764-1] 40-5 524-6| 39-1 771-4| 40-7 540-8| 49-2 || 775-6] 51-1 544-3} 50-7 | 767-9| 51-6 543-0} 46-5 | 762-1} 48-4 532:5| 50-4 || 755-2} 51-8 545-6 | 55-3 747:0| 56-7 543-0] 54-3 || 794:6| 56-0 528-6| 44-4 | 751-3| 45-4 532:9| 45-5 | 771-8] 46-5 541-0} 53-9 || 751-0] 54-5 539:0| 53-8 || 769-2} 54-4 533°5| 46-5 755:-5| 48-1 534:7| 50-9 || 768-5| 51-4 536-1} 52-4 || 763-1] 52-9 542:6| 55-5 759-6| 56-2 537-5| 47-2 || 742-7) 47-3 538-5] 49-5 || 764-5] 49-3 546-2} 55-8 || 739-8| 55-6 537-5| 55-6 || 763-8| 55-7 544-5] 56-7 || 724-7| 57-7 537-2| 56-7 || 735-S| 57-6 548:8| 60-7 || 715-5} 61-0 548-5| 64-2 || 705-3) 63-7 537-9| 58-5 || 716:3| 59-7 535-4| 57-7 || 719-1) 58-7 541-0| 57-7 || 740-5| 58-7 538-5| 57-7 | 769-8| 58-7 18 *y Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of DECLINA- Mean Time of Declination TION, Cor- |Thermo-|| Cor- Declination TION. Cor- |Thermo-|| Cor- |Thermo Observation. rected. | meter. || rected. Observation. rected. | meter. || rected. | meter. Glo ie el 4 Se. Div. ° Mic. Div. dt th. eam, a Se. Div. a Mic. Diy. = Nov. 2 20 0] 128-60 || 536-0] 51-6 || 734-2 Nov. 16 20 0 124-17 || 536-7) 49-3 || 745-5) 51-1 23 0} 131-55 | 538-8] 52-4 || 749-6 23 O|| 126-43 || 534-6) 50-5 || 747-2) 52-0 Nov. 3 2 O|}| 135-05 | 547-6| 54-9 || 753-2 Nov. 17 2 O|| 128-15 || 543-6| 55-0 || 742-7] 56-3 5 0} 133-57 | 544-0) 57-7 || 757-7 5 O| 125-62 || 547-3] 56-7 || 742-9) 58-1 20 O| 125-25 | 537-2) 51-1 || 754-8 20 O|| 125-17 || 530-8| 46-8 || 726-9| 48-1 23 O| 128-78 | 535-3] 51-6 || 765-8 23 O|] 126-28 || 532-6) 48-8 || 751-5| 50-2 Nov. 4 2 O]| 131-18 || 546-9| 55-6 || 754-3 Nov. 18 2 O|| 127-50 || 545-3] 55-3 || 741-6] 56-3 5 0O|| 127-70 | 545-8} 56-3 || 752-8 5 O|| 125-65 || 548-5] 56-2 || 734-9} 57-3 20 O| 127-57 || 533-8] 49-2 || 759-4 20 O 125-20 || 541-2} 47-4 || 742-8) 49-1 23 O|} 129-01 | 529-8] 50-9 || 765-7 23 0|| 127-68 || 535-2] 48-9 || 747-6| 50-4 Nov. 5 2 O]] 131-27 || 542.7] 54.5 || 755-9 Nov. 19 2 O|] 129-14 |} 545-8] 51-9 || 751-7] 52-9 5 O]}] 127-65 || 544.2) 55-3 || 760-8 5 0O|| 126-88 || 549-4] 57-8 || 727-6| 58-5 Nov. 6 20 O]| 125-60 || 538-1] 492.8 || 755-3 Nov. 20 20 0|| 127-94 || 539-4] 39-4 || 730-9} 40-0 23 0O}| 125-15 | 526-0] 42-7 || 758-9 Za \0 128-98 || 528-8} 41-0 || 747-6| 41-9 Nov. 7 2 O]] 129-58 || 544-1} 49.3 || 765-6 Nov, 21 2° 0 130-72 || 548-6] 47-4 || 763-3| 47-6 5 0} 126-82 | 546-4] 53-9 || 738-8 > 0 127-63 || 542-2} 51-5 || 752-8} 51-9 20 O|] 125-83 || 542-7) 50-3 || 745-5 20 O|] 134-82 || 500-2} 43-4 || 647-5] 45-1 23° 0 126-43 || 538-1] 52-6 || 750-2 23 0 133-47 || 532-1| 47-7 || 747-6} 49-4 Nov. 8 2 O|| 128-40 || 546-2) 56-5 || 730-4 Nove 22:72) 0 133-57 || 528-7} 50-8 || 807-0} 52-3 a 0 126-62 || 548-5] 57-1 || 730-2 5 0O|| 127-03 || 539-6} 51-9 || 828-8] 53-6 20 O} 125-25 | 547-5) 51-9 || 731-2 20 O 128-34 || 537-7| 45-2 || 710-7| 47-3 23 O] 127-23 || 541-1] 52-7 || 733-6 23-0 130-98 || 508-1} 43-0 || 761-1] 45-0 Noy. 9 2 O|] 129-10 || 546-3] 58.7 || 719-7 Nov. 23 2 0O|| 129-95 || 533-9| 43-1 || 752-7| 44-6 5 O| 125-68 || 545-6| 57-4 || 730-9 5 0} 125-72 |} 531-9] 43-7 || 769-5| 44-2 20 O 126-02 || 543-8| 48-4 || 703-7 20 O|| 125-95 || 530-1} 35-2 || 760-6) 35-9 23 0 134-95 || 521-1) 48-5 || 744-9 23 0|| 128-07 || 527-6| 36-7 || 758-6| 36-4 Nov. 10 2 O| 138-37 | 548-4] 54.4 || 776-5 Nov. 24 2 0O|| 127-92 || 528:3| 37-6 || 762-3] 37-5 5 O| 126-97 | 544-0} 55-5 || 800-9 5 O]] 123-64 || 519-5| 38-9 || 792-3] 38-5 20 O| 132-64 | 521-9| 49-4 || 718-4 20 O|| 125-97 || 538-0| 40-5 || 742-5] 40-3 23 0} 126-70 | 530-3) 50-2 || 755-1 23 O|| 125-79 || 534-0} 41-1 || 745-5) 40-9 Nov. 11 2 0] 130-52 || 539-9] 57-8 || 750-0 Nov. 25 2 0O|| 129-80 || 532-9] 42-1 || 747-1] 41-8 5 O| 122-44 | 539-7) 55-9 || 789-8 5 O|| 126-12 || 537-6| 42-7 || 754-3] 42.5 20 O 126-02 || 535-2} 53-3 || 749.4 20 O|| 127-57 || 548-5] 56-3 || 712-5| 57-9 23 0} 128-08 || 537-0) 52-5 || 745-8 23 O|]] 129-90 || 543-6] 57-5 || 722-0} 59-2 Nov. 12 2 O|] 129-72 | 541-7] 56.4 || 744-6 Nov. 26 2 0O|| 131-23 || 546-5| 56-9 || 728-1} 58-9 5 O| 127-17 || 544-3] 58-3 || 744-5 5 0O|] 128-90 || 549-5| 59-6 || 719-3} 61-3 Nov. 13 20 O|] 126-45 || 533-0] 41-9 |) 742.4 Nov. 27 20 0|| 127-08 || 539-0| 42-0 || 740-0] 42.3 23 0] 125-83 | 535-9| 43-5 || 760-9 23 O|| 127-61 || 542-8} 48-6 || 737-3] 48-6 Nov. 14 2 O| 128-98 || 547-3] 52.5 || 743.3 Nov. 28 2 0O|| 129-30 |} 550-9} 55-3 || 716-1] 55-2 5 0] 126-66 | 546-2| 54-5 || 733-5 5 O|| 127-48 || 554-9] 57-0 || 707-8] 57-4 20 O| 126-05 || 531-0} 42-6 || 749-9 20 O} 127-17 || 549-2] 52-9 || 714-1] 55-2 23 O]|] 125-90 || 537-4| 48-4 || 754-5 23 O]] 123-85 || 552-3] 57-8 || 719-2] 57-9 Nov. 15 2 O|| 126-15 || 546-6| 53-4 || 744.2 Nov. 29 2 O|] 130-33 || 546-5| 57-4 || 717-5| 58-8 5 0} 125-19 | 548-9] 55-8 || 741-4 5 O|| 123-78 || 553-4) 57-5 || 720-4] 59-1 20 O|| 125-30 | 536-1| 47-8 || 744-3 20 O|| 122-67 || 541-4] 47-8 || 706-9| 49-3 23 0} 127-81 || 534-6] 48.4 || 753-1 DSH) Oil deh ca AN UM es aieee (eb og ete || eee Nov. 16 2 O]] 129-14 || 535-8] 53-3 || 754-9 Dees 3) (9% 0) hte SSS ce teen cte | Naess 5 O 127-63 || 543-2) 54-1 || 766-1 bye 0) 123-22 || 549-2} 51-3 || 710-3] 50-6 Birinar. k=0:0001248 g=—0:000304=2'44 Scale divisions. BALANCE. k=0:0000143 g=0:000073=5-10 Micrometer divisions. ; DECLINATION. Torsion removed. Circle reading 186°. Nov. 74 21, 200°. Nov. 114 6», 150°. (See note below.) Noy. 144 | 214, 165°. Nov. 284 214, 172°. Nov, 34 8h; 54 4h; 94104; 194 6h; Q]4 994, Nov. 114 6. sufficiently hard down, so that the fibres became loose. Nov. 294 23h—Dee, 34 2h, Extra observations. DAILY OBSERVATIONS OF MAGNETOMETERS, NOVEMBER 2—DECEMBER 3. 1842. On removing the Declination magnet, in order to make the Dip observation, the suspension cylinder was not held The torsion was removed. Observer in Edinburgh on business connected with the observatory. rt. DAILY OBSERVATIONS OF MAGNETOMETERS, DECEMBER 4—31. 1842. 1 Gottingen BIFILAR, BALANCE, Gottingen BIFILAR. BALANCE. Mean Time of DrEciina- |——_—_—_——__ |__| Mean Time of __ || DEcLINa- | ———_-—____ Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-|| Cor- |Thermo Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. ‘ds hy 9m. , Se. Div. ° Mic. Div. ° di chem: , Se. Div.| .° Mic. Divy.| ° Dec. 4 20 O|] 122-70 || 547-1| 48-8 || 710-5] 48-8 | Dec. 18 20 O] 123-87 || 538-0] 43-4 || 726-6] 43-9 23 O|| 123-07 || 545-9| 52-9 || 706-2| 52-4 23 0}) 125-79 || 539-5| 46-4 || 734-7| 46-7 Dee. 5 2 O}] 124-42 | 553-0] 57-5 || 693-1] 57-3 . 19 2 O} 127-83 || 552-0) 53-8 || 710-1) 53-6 5 OO} 124-83 |) 553-5] 57-1 || 697-6| 57-3 5 0O| 126-00 || 547-8| 56-4 || 711-3] 56-7 20 O}] 129-55 || 534-5| 52-8 || 711-4] 54-1 20 O}| 124-24 |) 547-8) 54-3 || 705-6) 55-4 23 O|| 124-82 | 542.0! 54-3 || 709-5| 55-4 23 O} 126-08 || 545-3] 54-4 | 706-5) 55-5 Dec. 6 2 O|] 127-52 || 539-8] 55-0 || 723-3] 55-9 . 20 2 O} 127-17 || 546-1] 56-4 || 712-1) 57-3 5 O|] 124-25 | 546-7| 54-4 || 726-7) 55-1 5 0} 125-70 |) 550-1| 57-1 || 705-2) 58.3 20 O}] 125-75 || 541-4] 51-3 || 695-4) 52-1 20 O| 124-46 || 551-5] 58-6 || 683-0) 60-0 23 O|] 125-55 || 536-8] 50-1 || 705-0] 50-8 23 O|] 125-20 || 547-5) 56-8 || 686-3] 58-3 Dec. 7 2 O| 128-28 || 542-4] 49-5 || 717-7| 50-0 . 21 2 Of} 127-47 || 551-0] 56-0 || 697-6] 57-4 5 O|] 129-03 || 531-0] 49-0 || 753-0} 49-4 5 O|| 126-17 | 553-9] 61-6 || 687-9| 63-3 20 O}| 124-60 | 543-0} 46-7 || 716-1] 46-8 20 O| 126-90 || 548-9} 59-9 || 692-6) 62-2 23 O|] 124-66 | 535-5} 47-1 || 720-2| 46-9 23 0] 129-52 || 547-5| 58-7 || 673-4! 60-3 Dec. 8 2 O|| 128-27 || 539-1) 48-7 | 736-8] 48-0 . 22 2 0} 129-03 | 548-3] 58-4 || 701-4) 59-8 5 O|| 118-83 || 544-2] 53-9 || 701-7| 53-6 5 0] 128-27 || 548-4] 58-8 || 709-0| 60-7 20 O|| 125-45 || 549-8} 52-2 || 707-9| 53-2 20 O| 126-02 || 544.0} 52-9 || 707-5] 55.4 23 O}| 125-93 || 541-5) 53-4 || 715-5} 54:3 23 OO} 128-92 || 540-4| 53-0 || 722-8| 55.7 Dec. 9 2 O|] 127-54 || 542-9| 53-8 || 712-8| 54-7 . 23 2 O} 129-72 || 547-5] 55-3 || 709-6] 57-5 5 O|]| 125-95 | 539-4] 56-3 || 755-1) 57-3 5 O| 127-40 | 544.8| 57-2 || 714-8} 59-7 20 O}] 123-93 || 542-8} 53-0 || 728-5] 54-3 20 O| 126-12 || 538-2] 46-4 || 734-4] 48-6 23 O}] 124-42 | 534-1) 51-6 || 731-7| 52-6 23 0]|) 126-97 || 544-9) 49-8 || 728-0! 52.2 Dec. 10 2 O] 126-42 | 544-4] 54-0 || 738-0] 55-4 . 24 2 O} 126-33 | 551-0) 52-5 || 714-9] 54-0 5 O|] 124-30 | 545-5] 55-3 || 729-6] 56-3 5 O| 124-88 || 545-9] 50-9 || 721-4| 52-4 Dec. 11 20 0O|| 123-20 || 540-1] 44-9 || 737-6] 45-8 . 25 20 O| 124-27 || 547-0} 47-8 || 700-7| 47-6 23 O|}| 124-82 || 542-1] 49-0 || 739-6] 49-1 23 O| 126-43 || 545-9| 49-4 || 709-0} 49-1 Dec. 12 2 O}] 125-55 || 548-3] 54-4 || 715-8] 54-1 . 26 2 O| 126-80 | 548-9| 54-8 || 687-6} 54-3 5 O}| 124-00 || 552-2] 56-3 || 701-2] 56-1 5 0] 124-39 | 550-3) 55-2 || 695-4] 55-7 20 O|| 123-18 || 549-2] 57-6 || 696-0} 58-2 20 O| 124-55 || 539-2) 45-7 || 705-8| 47-9 23 O|| 125-75 || 545-2) 57-4 || 695-6] 58-0 23 0} 125-59 || 548-5| 51-0 || 710-2} 53-2 Dec. 13 2 O} 127-03 | 550-7| 57-3 || 693-2] 57-7 . 27 2 O} 127-17 || 553-2) 52-8 |) 709-1| 54-2 5 0] 125-08 || 557-2] 58.8 || 700-7| 59-7 5 O] 126-28 | 552-5) 53-9 || 702-3) 55-4 20 O} 125-95 || 545-1] 60-4 || 688-4] 62-2 20 O| 124-32 || 541-0] 45-5 || 717-3) 47-9 23 O|}| 125-72 || 537-9! 57-9 || 695-4| 59-2 23 0} 125-49 || 545-2) 48-8 | 726-0) 51-1 Dec. 14 2 O|| 128-07 || 543-9] 56-5 || 699-3] 57-7 . 28 2 O|] 126-90 || 555-1|) 53-6 || 707-7| 55-1 5 O|| 124-55 || 543-8] 54-9 || 705-5) 55-9 5 O|| 125-73 || 549-2) 54-6 || 699-0] 56-0 20 O|| 124-70 || 543-3) 52-6 || 708-0] 52-4 20 OO} 123-97 || 546-8) 53-3 || 698-1) 54-5 23 O|| 125-37 | 541-2] 52-9 || 712-3] 52-6 23 0|| 125-60 || 542-6| 53-4 | 708-0) 54-4 Dec. 15 2 O|| 127-50 || 547-5| 54.0 || 722-6] 53-9 . 29 2 O}] 127-23 || 547-6| 54-3 || 714-8] 55-1 5 O| 125-08 || 552-3] 58.4 || 704-3] 58-3 5 OO} 125-20 || 553-2] 59-4 || 687-5| 60-3 20 O}] 124-13 | 545-4] 56-S || 699-2) 57-9 20 O| 124-37 || 547-8| 58-0 || 677-2) 59-5 23 0}, 125-72 || 537-8] 55-5 || 697-5| 56-5 23 O} 125-42 | 548-1} 58-1 || 693-8] 59-3 Dec. 16 2 O]] 126-95 || 547-9] 57-5 || 708-2| 58-3 . 30 2 O} 131-76 | 546-2} 61-9 | 696-3] 62-8 5 O]}] 124-86 | 549-3] 58-7 || 703-9| 59-7 5 O]| 127-74 || 535-1} 61-6 || 706-1) 62-8 Dec. 16 20 O|| 124-32 | 541-9] 55-9 || 700-6| 57-9 20 O|} 125-79 || 550-2) 58-3 || 676-1) 59-2 23 0} 125-82 | 543-3] 53-8 || 721-7] 55-8 23 O|}| 128-10 || 545-8| 58-9 | 693-4) 59-9 Dec. 17 2 O|| 126-55 | 550-7] 56-5 || 711-5| 58-2 . 31 2 Of} 129-32 || 549-4) 59-6 || 685-7} 60-6 5 O|| 125-35 | 549-4} 57-8 || 711-0} 59-9 5 O| 126-98 || 548-7} 59-4 || 694-1] 61-2 BIFILaAR. k=0:0001248 g=—0:000304=2°44 Scale divisions. BaLANncEe. k=0:0000143 g=0:000073=5:10 Micrometer divisions. DECLINATION. Torsion removed. Circle reading 172°. Dec. 54 21%, 172°. Dec. 124 214, 165°. Dec. 194 214, 168°. Dec. 54 20h; 94 5h; 174 4b, Extra observations. TERM-DAY OBSERVATIONS OF MAGNETOMETERS. 1841 anp 1842. 22 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. Gottingen JuLy 21, 22. Mean Time Declination DEctina: BrrinaR | BALANce | Decuina- | Birizar | BALANcE | Dectina- | Brrinar | Batance | Dectina- | Brrinar | BALAnce Observation. TION. Corrected.| Corrected, TION. Corrected.| Corrected, TION. Corrected. | Corrected, TION. Corrected.| Corrected Min. Ye Se. Div. Se. Div. | Mic. Div. 4 Se. Div. | Mic. Div. a Se. Div. | Mic. Div. 104, 144, 18}, gah, 0 129-80 | 497-8 487-6 124-95 | 481-0 136-41 | 456-2 Bi ll ercee al amieetes Wn esate 777-7 | 126-60 696-7 | 135-23 738-3 TO: vlieoreaess 492.9 489.4 126-98 | 475-0 134-33 | 460-8 15 129-52 777-2 127-54 695-6 133-72 735-7 20 130-09 | 494-7 486-4 128-38 | 475-4 133-57 | 461-8 25 130-35 774-4 129-52 695-9 132-84 736-1 30 130-03 | 494-2 | = | sree 481-0 130-40 | 474-0 131-95 | 462-4 35 129-98 774-6 131-73 696-8 131-25 735-8 40 129-35 | 491-2 482-7 131-17 | 469-6 130-36 | 466-1 45 128-76 768-2 131-22 700-3 130-18 730-1 50 128-65 | 490-1 481-3 131-55 | 466-5 130-18 | 466-6 59d 128-56 760-8 131-57 703-4 129-09 733-9 112, 155, 19}, 23h. 0 128-85 | 490-6 474-9 132-80 | 459-9 129-47 | 466-5 5 129-09 751-9 132-25 707:3 127-95 734-1 10 129-29 | 493-0 474-7 130-42 | 462-6 128-98 | 466-3 15 130-43 747-1 128-50 708-7 128-27 733-8 20 130-60 | 491-9 464-0 127-80 | 460-1 128-96 | 473-0 25 131-18 728-8 127-94 713-6 129-15 735-7 30 130-55 | 490-5 448-2 128-05 | 462-1 129-23 | 471-7 35 130-05 713-3 126-63 716-2 129-50 737-6 40 129-76 | 490-9 444-4 127-70 | 463-7 129-78 | 474-1 45 129-20 703-3 129-18 718-2 130-35 739-0 50 129-18 | 491-1 440-8 130-43 | 464-0 130-13 | 474-8 590 129-29 705-3 130-07 719-7 130-76 740-1 12h, 164, 202. oh, 0 129-09 | 490-9 459-0 129-13 | 471-3 130-72 | 473-9 5 129-12 702-1 130-07 724-2 130-83 747-5 10 129-15 | 491-7 473-8 128-75 | 468-4 131-27 | 476-0 15 129-50 695-3 130-72 725-9 131-42 742-3 20 129-29 | 491-2 475-8 132-48 | 468-6 131-80 | 477-9 25 129-12 690-6 133-33 727-4 131-95 741-8 30 129-25 | 490-9 474-0 133-37 | 467-8 132-57 | 479-9 35 129-12 686-3 134-03 728-1 133-22 742-1 40 129-25 | 490-6 475-3 133-60 | 461-3 133-00 | 483-0 45 129-35 684-6 130-56 729-9 133-95 741-9 50 129-52 | 492-5 479-1 129-78 | 457-3 134-15 | 483-9 55 130-05 686-1 130-69 730-5 133-85 741-7 132, 172, Q1h, 1h, 0 130-35 | 491-6 481-2 129-78 | 447-3 134-10 | 484-9 5 129-67 687-3 129.27 735-2 134-17 744-8 10 129-78 | 490-4 480-1 131-91 | 443-2 134-00 | 478-8 15 129-58 686-3 130-76 736-0 134-03 745-3 20 129-29 | 488-7 485-4 132-08 | 444-0 133-93 | 475-6 25 128-92 686-9 132-13 735-8 134-22 745-8 30 128-52 | 488-5 477-2 131-97 | 453-2 134-02 | 478-0 35 129.42 688-4 131-30 736-4 134-28 745-2 40 129-38 | 488-6 474-9 132-60 | 448-2 134-20 | 478-3 45 129-55 694-2 132-04 738-1 133-93 746-1 50 129-67 | 488-2 472-9 133-73 | 451-3 134-23 | 476-7 55 129-82 697-3 136-57 738-2 133-97 746-7 } 10 | | 12 | is | 1 w|i | 19] 20] 21 | 22] 28 | o | 1 BIFILAR THERMOMETER, . | 62:3 | 62-4 | 62:7 | 62-5 | 62:3 | 618 | 61-1 | 606 | 59-9 | 59-4 | 59:3 | 59-1 | 58-9 | 58°6 | 58-6 | 58-7 Batance Turrmomersr, . | 62-7 | 622 | 65-0 | 623 | 62-2 | 622 61-9 | 612] 60-7 | 59:9 | 59-7 | 59-9 | 597 | 592 | 58-7 | 59-0 During the Terms of 1841, the Bifilar and Balance Magnetometers were observed 2™ 30% after the corresponding minutes of Declination observation. July 214224, 1841. The Bifilar and Balance magnets, during this term, had their N. poles E. and W. respectively ; the opposite direction to that which they afterwards occupied. Increasing readings, however, still indicate increasing force ; the Bifilar readings hav- ing been subtracted from a constant quantity. Gottingen Mean Time te) Declination Observation. Min. : BIFinar Turrmomursr, | 58-9 | 59:5 | 59:9 59-9 | 60-0 TeRM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. JiuLyY 21522) Drcuina- | BirizarR | Batance { DEcLINA- TION. Corrected. | Corrected. TION. 4 Se. Div. | Mic. Div. $ gb, 133-47 | 475-9 130-43 134-22 749-4 131-25 134-00 | 476-6 130-69 134-10 748-2 130-70 133-90 | 482-2 130-47 134-08 748-2 130-56 134-33 | 486-1 130-32 133-75 749-9 129-87 133-70 | 481-8 129-83 133-77 749-8 129-62 133-63 | 485-8 129-63 133-58 751-1 129.23 32, 133-63 | 481-9 128-92 133-20 751-7 129-22 132-88 | 481-9 128-60 133-00 754-3 128-63 133-04 | 482-8 128-21 133-07 755-6 128-82 133-13 | 487-4 128-90 132-64 756-6 129-00 132-02 | 486-8 129-27 132-68 755-6 129-42 132-77 | 490-0 129-92 132-64 756:3 130-52 4h, 132-57 | 490-6 130-43 132-42 759+3 130-67 132-24 | 488-6 130-62 131-97 759-4 130-63 132-37 | 489-0 130-42 131-91 758-2 131-08 131-91 | 491-5 130-56 131-87 758-4 130-20 131-71 | 494-8 130-13 131-90 758°3 129-95 131-91 | 495-1 129-60 131-97 758-4 129-20 5h, 131-33 | 497-4 129-13 131-18 759-7 128-87 130-87 | 497-1 128-50 131-17 760-3 128-47 131-13 | 497-1 128-17 130-87 759-9 128-12 131-08 | 497-9 128-15 130-70 762:3 128-10 130-65 | 494-8 128-03 130-53 761-9 128-40 130-73 | 496-0 128-58 130-67 764-0 128-55 3 4 5 23 Avaeust 27, 28. Brrmar_ | BALANcE DechinA- | Brriar | Bauance | Deciina- Brritar_ | BALANCE jCorrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. Se. Div Mice. Div. Se. Div. ‘ Mic. Div. be Se. Div. ' Mic. Div. 6h, 104, 142, 499.2 133-24 | 555-6 126-14 | 552-6 765-1 132-44 734-1 124-86 570-2 499-7 130-42 | 555-4 123-15 | 566-8 766-4 129-50 732-6 123-02 577-9 498-4 129-09 | 555-7 122-30 | 560-3 769-3 128-50 723-7 122-15 598-4 497-6 126-80 | 555-6 122-60 | 562-2 770-0 125-42 708-0 122-84 595-9 496-4 128-65 | 561-0 123-95 | 561-5 771-6 131-85 673-0 123-92 603-0 499-6 132-93 | 538-6 124-13 | 561-5 774-0 130-50 669-5 124-08 611-8 zh, 115, 15: 498-8 125-87 | 534-9 122-87 | 560-1 773-1 121-42 679-6 123-79 621-6 499-9 121-18 | 546-4 122-88 | 556-5 773-0 123-07 682-6 123-52 626-8 502-0 125-52 | 546-1 123-48 | 555-8 774-2 126-90 685-1 125-02 637-4 499-3 129.45 | 555-2 126-23 | 553-2 7738 132-35 677-7 126-20 645-7 500-7 132-30 | 554-4 126-94 | 553-5 774-1 131-88 670-2 128-32 650-7 500-3 132-18 | 551-8 128-80 | 551-7 776-0 131-53 669-7 129-18 656-2 gh, 125, 162, 498-8 130-47 | 552-6 129-33 | 554-3 167-7 130-25 664-7 130-20 656-8 498-8 129-92 | 547-3 129-35 | 555-9 767-3 129-69 660-5 129-83 656-3 499.2 129-58 | 543-4 127-78 | 557-1 767-7 130-75 649-8 128-10 656-1 501-0 135-53 | 542-7 126-95 | 556-5 765-3 136-45 588-6 129-30 663-9 497-1 130-09 | 561-7 129-87 | 554-1 774-6 131-08 447-0 129-49 663-9 495-3 137-15 | 551-0 130-52 | 553-3 775:8 142-31 433-6 128-80 668-6 gh, 132. 172. 495-6 141-13 { 539-6 130-69 | 554-0 776-9 139-09 454-1 131-02 671-2 499-0 134-03 | 550-4 130-87 | 553-7 777-4 137-80 477-9 132-25 670-7 498-3 141-71 | 548-6 133-30 | 546-8 7795 142-45 464-0 134-99 676-3 493-4 141-45 | 538-5 135-55 | 536-3 779-2 138-67 500-0 135-08 676-5 491-3 136-30 | 546-7 135-45 | 534-8 778:8 133-42 524-5 136-23 676-5 491-4 131-15 | 549-3 136-30 | 541-7 777-9 128-10 ‘| 560-5 137-67 679-2 6 | 7 8 9 10 13 14 16 | 17 | 60-2 | 59'8 | 59-6 | 64:6 | 64-4 | 64.4 | 64.3 | 64+6 637 | 637 | 63-7 BALANCE THERMOMETER, 59-6 | 59-7 | 60-2 602 | 60-7 60°6 | 59-8 603 | 65:6 | 65:8 | 65:8 | 65:8 | 65:8 65°5 | 655 | 65:6 a 24 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. Gottingen AvGust 27, 28. Mean Time BIFILAR Corrected. , BALANCE | DECLINA- Corrected. TION. BIFILaAR Corrected. BaLaAnce | DEcLINA- Corrected. TION. BIFILAR Corrected. 0 Declination |} Drciina- BawancE | DeEciina- | Bririrar | BALance Observation. TION. Corrected. TION, Corrected. | Corrected. Se. Div. Y, Mic. Div. “ Se. Div. Se. Div. Se. Div. | Mic. Div. 18}, gon, gh, 6h, 138-61 | 543-7 135-85 | 539-5 554-8 138-30 | 563-6 138-75 671-7 | 136-32 706-9 | 138-70 727-4 139-76 | 542-5 136-50 | 538-4 558-6 138-55 | 566-1 140-85 662:3 | 137-14 704-2 | 138-57 732.3 141-27 | 536-8 19777 SBF1 560-6 136-88 | 571-6 140-56 651-1 | 138-58 699-5 | 135-05 744.0 140-38 | 542-7 138-18 | 533-1 562-0 131-80 | 570-1 142.27 656-5 | 138-89 701-2 | 129.72 753-6 142.65 | 5427 139-35 | 527-3 555-0 130-13 | 573-4 142.40 659-2 | 140-23 700-8 | 130-76 762-8 140-05 | 549-8 140-92 | 523-8 559-1 130-16 | 570-2 139-95 6573) | 4arg5olce\) bag | 145-200 > De 128.89 773-7 19h, 23h, 3h, 7h, 139-27 | 550-0 141-78 | 523-9 555-0 128-28 | 566-7 138-80 662:8 | 141-50 708-2 | 128-95 7731 137-75 | 552-3 141-48 | 525-8 559-4 127-15 | 572-3 138-58 661-5 | 141-60 709-9 | 129-62 762-9 140-36 | 555-1 139-82 | 525-9 563-9 135-05 | 568-7 140-98 661-6 | 140-56 713-7 | 136-67 764-8 140-70 | 554-6 141-33 | 533-4 558-5 136-12 | 560-0 139-16 660-2 | 140-76 713-4 | 135-00 760-0 137-90 | 553-0 142.57 | 534-8 563-6 135-88 | 557-2 136-35 663-9 | 144.08 708-8 | 135-12 761-4 135-68 | 547-1 144-30 | 539-4 565-3 134.50 | 559-6 136-32 673-3 | 144-19 707-1 | 134-77 756-2 202, ob. 4h, gh, 137-18 | 545-4 144-77 | 544-6 570-9 134-90 | 561-2 138-01 676-4 | 144.33 710-5 | 134-03 758-0 137-88 | 545-2 144.42 | 547-5 563-9 133-30 | 562-9 136-63 679-5 | 145-85 712.3 | 133-72 758-4 136-38 | 546-3 146-77 | 546-5 553-4 133-68 | 559-7 136-85 683-3 | 145-72 706-8 | 134-22 758-6 136-37 | 544-4 144.63 | 549-9 556-4 133-10 | 554-5 135-77 688-6 | 144-95 698-5 | 132-31 752-1 136-13 | 541-8 145-72 | 552-1 562-5 133-31 | 559-8 137-27 692.8 | 145.92 695-9 | 133-95 748-4 137-94 | 547-4 145-37 | 551-6 561-4 134-20 | 558-5 137-57 695-1 | 146-25 691-5 | 133-83 748.0 21h, 1), 5h, gh, 137-17 | 544.9 146-35 | 556-3 563-4 134-68 | 556-6 136-08 695-5 | 147-40 696-3 | 139-72 692-0 | 135-68 746-8 135-42 | 541-3 146-92 | 555-6 139-72 | 565-0 136-15 | 557-1 134.42 696-5 | 147-43 700-3 | 139-63 697-9 | 135-75 739-8 135-82 | 543-7 147.03 | 556-3 139-38 | 561-7 135-77 | 555-5 135-85 697-1. | 147-03 701-5 | 139-10 701-6 | 135-06 737.2 136-02 | 543-2 147-03 | 558-3 139-29 | 563-3 134-08 | 555-9 136-78 700-0 | 148-25 709.2 | 139-13 713-5 | 133-88 734.2 137-34 | 543-1 148-12 | 548-8 139-13 | 565-3 133-60 | 555-6 137-01 703-7 | 147-65 713-2 | 139-23 708-1 | 133-55 734.2 136-12 | 540-1 147-45 | 550-6 139-23 | 563-6 133-00 | 554-7 136-34 705-7 | 147-61 711.3 | 139.00 708-6 | 133-00 733-1 | as | 19 | 20 | 2 22 23 | 0 | 1 2|s| 45 e¢ Fi 8 | Soe BIFILAR THERMOMETER, | 636 | 68:3 | 6-0 | 65-1 637 | 64:5 | 65-4 | 66-4 | 67-7 68:7 | 69:6 | 69:8 | 703 | 70:2 | 69:5 | 69-0 | 68-6 BALANCE THERMOMETER, | 556 647 | 638 | 643 | 643 65:0 | 660 66-4 | 67-4 | 680 f 68:8 | 67-8 68-0 67°8 | 68:7 68:8 | 68:8 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. 25 Gottingen SEPTEMBER 22, 23. Mean Time Dealination DeEcuiINnA- Brrinar | BaLance | Deciina- BiritaR | BALAnce | Derciina- Brrinar | BALANcEe DECLINA- BiritaR | BALANCE Observation, TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. Min. “4 Sc. Div. | Mic. Div. 4 Se. Div. | Mic. Div. | 4 Se. Div. | Mic. Diy. 4 Sc. Div. | Mic. Div. 104. 14h, 18}, Qoh, 0 129-73 | 542-6 135-68 | 536-5 | 133-40 | 536-3 134-26 | 519-6 5 129-73 597-4 135-68 649-5 133-28 656-9 134-82 647-3 10 130-92 | 535-4 135-40 | 535-9 | 133-45 | 535-8 135-02 | 521-4 15 131-08 599-3 135-28 650-0 | 133-48 656-9 135-72 645-3 20 128-37 | 530-7 134-82 | 535-6 | 133-77 | 535-0 136-08 | 519-4 25 126-17 601-2 134-13 649-4 | 133-88 658-6 136-55 645-8 30 127-03 | 535-4 134-95 | 535-0 | 133-73 | 535-0 136-34 | 519-4 35 128-55 608-2 134-23 650-0 | 133-47 659-0 136-65. 647-8 40 129-58 | 532-1 134-06 | 536-0 | 135-46 | 532-9 137-03 | 515-7 45 130-20 614-2 134-03 651-0 133-30 659-9 137-08 647-6 50 130-85 | 531-2 134-20 | 536-2 1 133-24 | 537-6 136-95 | 515-2 55 131-08 621-6 134-00 649-8 133-66 661-4 137-34 646-4 114, 15}, 19h, 234, 0 131-47 | 531-1 133-73 | 535-6 | 133-75 | 534-4 137-28 | 515-0 5 132-25 628-9 133-47 649-1 | 133-22 661-6 137-43 648-4 10 132-55 | 532-4 133-04 | 534-2 | 132-80 | 535-6 137-83 | 516-9 15 133-18 634-1 132.85 649-2 | 132-93 658-0 138-10 647-5 20 133-82 | 533-2 132-77 | 534-2 | 132-98 | 534-8 138-35 | 518-2 25 133-95 635-7 133-00 657-0 | 133-08 656-5 139-18 649-7 30 134-23 | 533-4 133-22 | 534-9 132-97 | 534-2 138-63 | 517-7 35, 137-41 638-3 132-98 658-2 | 132-97 654-8 139-30 647-8 40 133-73 | 535-0 133-20 | 534-5 133-08 | 534-8 139-10 | 520-2 45 134-05 639-9 133-33 657-9 133-79 656-0 139-27 647-1 50 134-33 | 533-8 133-65 | 535-9 | 131-77 | 533-6 139-35 | 520-8 55 134-86 643-5 133-65 655-2 132-62 653-9 139-83 645-8 12h, 16}, 204, 04, 0 134-63 | 533-6 134-62 | 533-5 132-02 | 532-9 139-72 | 519-8 5 134-43 645-7 133-30 656-8 132-93 653-3 139-95 645-5 10 134-72 | 535-1 132-64 | 534-4 132-87 | 531-8 140-65 | 522-1 15 135-02 646-4 132-38 657-0 132-67 654-9 141-32 643-0 20 134-60 | 536-8 132-40 | 533-6 132-38 | 529-9 141-23 | 522-3 25 134-73 645-7 132-20 659-8 132-20 653-2 141-03 642-2 30 134-73 | 538-3 134-32 | 533-7 131-95 | 530-0 141-03 | 525-2 35 134-77 649-7 134-59 659-5 | 133-20 652-9 141-18 641-3 40 134-57 | 537-2 134-55 | 534-6 1 133-51 | 529-1 141-07 | 523-7 45 134-42 644+1 134-40 659-5 | 133-45 654-3 141-38 641-4 50 134-45 | 537-2 133-93 | 533-1 | 133-44 | 526-8 139-98 | 521-7 aby) 134-19 647-4 133-73 659-7 | 133-02 653-8 140-87 643-6 132. 172, H 214, 14, 0 134-23 | 536-6 133-83 | 534-4 133-90 | 524-9 141-00 | 522-9 5 134-05 649-7 134-72 659-2 132-88 653-4 140-83 645-3 10 134-17 | 536-2 134-73 | 533-9 132-30 | 524-5 140-95 | 524-3 15 134-20 648-6 134-46 659-4 | 132-62 652-8 141-12 643-4 20 134-28 | 537-1 134-65 | 534-7 | 132-57 | 524-7 141-45 | 526-4 25 134-70 646-0 134-86 660-2 | 133-40 653-8 141-67 645-8 30 135-02 | 537-2 134-62 | 534-2 | 133-77 | 521-7 141-57 | 526-4 35 135-35 649-1 133-75 658-0 134-46 654-9 141-55 644-6 40 135-05 | 535-3 133-53 | 535-5 134-62 | 520-5 141-57 | 528-2 45 135-05 651-8 133-58 657-6 134-20 655-8 141-50 645-3 50 135-53 | 535-7 133-70 | 537-4 | 134-62 | 519-4 141-38 | 528-7 55 135-68 650-3 133-83 655-6 | 134-57 654-0 141-29 645-2 BIFILAR THERMOMETER, . . | 60.42 | 60-4 | 60:2 | 623 | 61:8 | 61-6 | 61-6 | 61-4 | 61.7 | 62-4 | 62-4 | 61-6 | 60:9 | 60-6 | 60-6 | 60:6 BALANCE THERMOMETER, 60.3 ? | 60:3 | 60°3 | 61:8 | 61-7 | 61-7 | 61:7 | 61-2 | 61:7 | 62:4 | 62°3 | 61:5 | 60:9 | 60-7 | 60°7 | 60°7 MAG. OBS. VOL. I. G 26 TrerM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. Gottingen SEPTEMBER 22, 23. OctToBER 20, 21. Mean Time Declination Dectina- | Brrivar | Batance | Decrina- | BiritaR | Batance | DEcLINA- Brrmar | Batance | Dectina- | BIrILaR | BaLance Observation. TION. Corrected.| Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. ie Se. Div. Mie. Diy. i Se. Div. Mice. Div. Se. Div. | Mic. Div. e Se. Div. | Mic. Div. Qh. 6h, 104, 144, 0 141-29 | 529-0 137-75 | 542-4 508-6 117-61 | 491-8 | 5 141-25 645-1 | 138-08 645-9 666-1 | 117-61 572-1 10 141-15 | 530-1 138-18 | 550-7 509-3 117-15 | 487-2 15 141-15 645-7 | 137-78 646-1 665-4 | 117-60 570-3 20 141-18 | 529-3 137-52 | 549.2 510-5 122-22 | 476-2 25 140-92 645-2 | 137-48 653-5 664-9 | 124-70 554-1 30 140-76 | 530-1 137-98 | 537-5 509-8 129-55 | 453-4 35 140-93 647-5 | 138-07 653-6 663-2 | 133-22 507-2 40 141-20 | 533-8 138-07 | 535-2 509-9 135-86 | 459-3 45 141-13 649-2 | 138-14 656-4 658-2 | 135-63 490-7 50 141-60 | 536-5 138-23 | 534-9 509-6 133-95 | 478-4 55 141-64 650-6 | 138-08 658-3 659-7 | 132-20 501-0 3h, 7h, 114, 154, 0 141-32 | 533-7 138-25 | 536-4 506-8 131-17 | 488-9 5 141-50 654-2 | 138-28 661-0 653-3 | 130-35 498-4 10 140-32 | 535-4 138-25 | 539-6 505-8 128-93 | 495-6 15 141-22 654-9 | 138-23 663-0 652-5 | 127-72 511-4 20 141-12 | 537-9 138-01 | 539-2 504-0 126-47 | 505-8 25 141-18 654-0 | 138-07 663-0 652-7, | 125-57 519-8 30 141-09 | 539-4 137-67 | 538-2 504-0 125-26 | 506-0 35 140-89 653-5 | 137-80 664-6 651-8 | 124-22 530-8 40 140-87 | 539-6 137-60 | 538-8 504-5 123-65 | 508-9 45 140-60 655-9 } 137-57 665-5 639-7 | 122.73 537-2 50 139-82 | 535-7 137-45 | 539-0 539-0 120-70 | 507-8 55 139-72 656-3 | 137-52 667-6 601-7 | 119-89 540-4 4h, gh 12h, ioe (VW || codoe case 532-9 137-74 | 540-6 534-1 118-45 | 507-4 5 139-45 654-0 | 138-17 666-7 565-7 | 117-58 538-6 10 139-07 | 534-3 138-23 | 538-9 523-2 116-21 | 508-4 15 138-78 652-6 | 138-21 666-5 563-2 | 113-97 527-2 20 138-67 | 533-8 138-17 | 539-6 513-6 113-02 | 516-4 25 138-40 651-1 | 138-01 667-1 565-4 | 112-66 542-9 30 138-37 | 536-7 137-98 | 539-5 512-4 113-63 | 515-4 35 138-30 649-4 | 137-70 664-4 563-3 | 114-77 554-6 40 138-12 | 536-6 137-83 | 539-4 512-0 114-01 | 512-4 45 137-92 649-7 | 137-58 665-8 560-0 | 118-43 562-4 50 137-78 | 536-9 137-63 | 538-9 503-1 119-22 | 508-1 55 138-08 648-7 | 137-30 665-4 564-1 | 121-55 560-5 5h, gh 134, 174. 0 137-88 | 540-5 137-57 | 536-8 499-9 120-38 | 510-0 5 137-75 649-4 | 137-81 666-2 570-1 120-52 549-9 10 137-72 | 539-3 137-28 | 539-2 488-4 120-23 | 503-3 15 137-88 649-0 | 137-37 666-6 579-3 | 118-76 538-5 20 137-48 | 539-2 137-15 | 538-6 494.4 117-14 | 497-7 25 137-18 650-4 | 137-14 665-5 577-8 | 118-00 536-5 30 137-50 | 538-8 137-17 | 538-2 500-3 119-22 | 486-9 35 137-57 647-4 | 137-85 665-7 572-1 | 121-07 536-8 40 137-63 | 542-3 137-74 | 538-2 497-2 121-33 | 483.4 45 137-52 648-0 | 137-83 665-5 566-3 | 121-97 534-2 50 137-55 | 542-0 137-77 | 538-7 493-1 120-75 | 483-4 55 137-60 647-0 | 137-70 667-0 570-4 | [22.53000) (coe LOR, g 5. a oc 7 4 | 5 6 7 8 3) 10} 10 | 11 12 14] 15 1G | ai BIFILAR THERMOMETER, 60°8 | 60-9 | 62-4 | 63°5 | 63:5 | 62°7 | 62:5 | 62:0 | 61-6] 52:4 | 54:0 | 55-0 | 53°8 | 53:2 | 52:8 | 52:4 | 51:2 BALANCE THERMOMETER, | 60:9 61:0 | 62:0 | 63-0 | 62:5 | 62:7 | 62-7 | 62:7 | 62:3] 51°6 | 52°8 | 54:1 | 53-6 | 53:2 | 53-0 | 52°8 | 51-8 Gottingen Mean Time Declination DECLINA- -JObseryation. TION. Min. 4 0 122-51 5 122-64 10 122-38 15 123-63 20 120-58 25 121-90 30 123-93 35 127-60 40 130-33 45 132-70 50 133-88 55 133-37 0 135-15 5 134-02 10 133-04 15 131-33 20 129-82 25 130-16 30 128-37 35 129-27 40 128-76 45 129-02 50 130-18 55 129-18 0 125-94 5 127-17 10 125-46 15 125-25 20 124-73 25 124-57 30 124-08 3) 125-42 40 124-82 45 125-22 50 126-03 55 127-03 0 126-52 5 126-60 10 127-07 15 127-80 20 128-70 25 129-82 30 130-50 35 128-69 40 128-50 45 128-43 50 127-30 BY) 127-32 Hour, TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. Birinar | BaLance | DEcLINA- Corrected.| Corrected. TION. Se. Div, | Mic. Div. 18h, 476-1 530-6 473-7 522-9 480-4 549-5 482-8 533-0 489-4 505-1 499-2 489-1 192. 502-9 479-9 507-6 475-6 510-2 472-7 506-9 484-8 498-2 498-9 495-4 506-1 201, 498-8 519-2 494-9 531-5 496-6 544-0 500-2 559-2 494-5 565-6 505-7 572-0 21h. 497-7 574-6 494-9 580-2 490-8 587-0 483-6 593-8 480-9 595-8 481-8 601-3 | 18 | 19 | 20| 2 27 OcropeEr, 20, 21. BIFILAR BALANcE | DECLINA- Birmar | BaLance | DEeEctina- BIriLaR Batance | Corrected. | Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. f Se. Div. | Mic. Div. ¢ Se. Div. | Mic. Div. i Se. Div. | Mic. Div. Q9oh, gh, 64, 488-7 129-15 | 498-8 122-00 | 508-8 605-7 129-23 767-7 122-60 696-3 485-9 130-38 | 501-3 123-43 | 512-1 606-8 | 131-27 767-6 | 124-99 | 693-6 486-8 131-45 | 498.9 124-45 | 489-4 604-8 133-60 757-5 111-95 694-7 486-3 131-87 | 494-3 108-62 | 508-8 | 606-3 132-58 747-8 106-08 | 698-5 487-6 131-73 | 500-0 96-85 | 524-2 | 610-3 132-08 739-2 100-00 | 679-0 485-1 131-48 | 507-0 105-24 | 510-4 612-5 132-93 727-7 103-29 683-4 23h, 3h, ee 490-7 133-27 | 513-3 104-18 | 502-1 616-9 133-31 722-1 106-57 683-7 484-8 134-83 | 516-8 107-54 | 491-1 623-9 136-94 714-8 106-68 696-1 484-8 137-03 | 515-2 109-45 | 504-8 625-2 135-60 720-2 113-38 687-7 493-5 135-82 | 522-4 117-30 | 500-3 627-8 137-35 723-6 117-14 669-3 484-9 139-53 | 518-1 112-20 | 502-4 631-7 139-70 728-4 113-43 658-4 478-4 137-38 | 503-5 114-22 | 498-1 632-5 137-80 731-9 111-09 668-8 02. 4h, gh, 478-2 139-00 | 495-7 116-57 | 505-0 628-7 136-05 T7137 119-49 654-1 479-6 131-62 | 496.2 122-15 | 496-1 629-1 119-73 773'8 123-04 657-2 487-9 111-62 | 540-9 123-11 | 491-2 628-5 118-98 747-8 122-30 662-2 494.3 124-00 | 527-0 122-24 | 496-3 634-7 127-35 725-6 122-67 663-3 500-0 130-23 | 509-1 123-83 | 500-2 642-3 130-30 698-9 125-83 663-8 501-4 130-30 | 502-7 127-52 | 498-3 644-9 130-63 680-3 127-45 662-3 14, 5h, gh, 496-4 130-80 | 514-2 127-65 | 497-6 652.4 130-67 672-4 128-30 664-5 491-6 130-96 | 517-8 128-30 | 496-5 663-3 130-72 676-3 128-85 663-4 474-8 130-60 | 513-3 128-92 | 497-0 686-8 130-62 676-0 127-10 659-7 476-8 130-42 | 507-3 126-94 | 505-3 711-1 130-05 680-2 128-85 656-0 490-0 129-36 | 504-8 130-33 | 497-6 744-1 130-42 693-3 130-15 655-0 500-7 129-87 | 497-3 128-95 | 503-7 755:3 126-80 703-6 129-12 648-5 22| 23| 0 | 1 2) 8 a[ 5 |. 6 Tea" 19\9 beto BIFILAR THERMOMETER, | 51-6 | 51:3 | 50-1 | 49-1 | 48°6 | 49-4 | 50-4 | 51-2 | 52:6 | 54-6 | 54-9 | 54.3 | 54:6 | 55-3 | 541 | 52:8 | 52-0/ BALANCE THERMOMETER, | 51:8 | 51:4 | 50-6 | 49:6 | 48:8 | 49-1 | 49-9 | 50-7 | 52.1 | 53-6 | 53:6 | 53.4 | 538 | 54:9 54:5 | 53°9 | 53:9 28 TrermM-DAy OBSERVATIONS OF MAGNETOMETERS, 1841. Gottingen NoveEMBER 26, 27. Mean Time Deeatation DECLINA- BiriuaR_ | BALANCE | DEeEcLINA- BrrmARk | BALANCE | Dectina- Birmar_ | BALANCE DECLINA- BIFILAR BALANCE Observation. TION. Corrected.| Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. ue Se. Div. ' Mic. Div. e Se. Div. | Mic. Div. 6 Se. Div. |! Mic. Div. Sc. Diy. | Mie. Div. : 104. 14h, 18}, 22h. 0 129-33 | 510-7 128-82 | 513-1 128-92 | 513-5 129-90 | 506-0 5 129-23 634-4 128-93 634-2 128-92 626-3 129-56 614-6 10 128-93 | 512-6 129-96 | 512-4 128-92 | 512-4 130-50 | 506-9 15 128-87 635-0 130-07 633-3 128-47 626-4 130-07 614-1 20 128-87 | 512-2 129-70 | 510-7 128-17 | 512-7 130-32 | 506-9 25 129-00 635-9 129-65 632-7 128-14 626-8 130-58 610-8 30 128-35 | 512-3 129-56 | 509-6 127-78 | 512-3 130-87 | 508-1 35 128-21 636-4 129-76 631-0 128-03 628-5 130-75 611-0 40 128-14 | 511-2 129-20 | 509.2 128-14 | 512-3 130-45 | 506-4 45 127-97 635-0 128-34 628-6 128-30 629-2 131-28 611-3 50 127-81 | 510-8 127-68 | 509-5 128-62 | 511-7 130-93 | 508-3 55 127-78 636-1 | 128-00 630-8 | 128-98 629-6 | 131-05 610-4 114, 154. 19}, 23h, 0 127-92 | 512-9 127-88 | 508-2 | 128-98 | 511-0 130-83 | 507-7 5 127-70 634-3 127-63 | 628-1 128-87 629-8 131-38 610-2 10 127-68 | 512-5 126-98 | 508-0 | 128-89 | 511-2 131-31 | 508-6 15 127-97 636-6 127-00 | 627-8 129-13 630-2 131-48 606-7 20 127-65 | 511-6 126-98 | 507-8 129-40 | 511-4 132-02 | 509-1 25 127-83 638-5 127-15 | 629-6 129-18 630-4 132-30 607-3 30 127-88 | 512-6 127-15 | 509-6 | 129-07 | 511-5 132-07 | 509-5 35 128-12 638-3 127-81 | 631-6 129.23 631-6 131-71 604-4 40 128-40 | 513-0 128-15 | 510-4 | © 129-13 | 511-5 131-77 | 510-0 45 128-35 638-1 128-34 | 629-1 129-16 631-1 132-05 606-3 50 128-83 | 511-3 128-35 | 511-6 | 129-25 | 511-3 132-22 | 510-5 55 129-10 639-9 128-60 | 626-8 129-12 634-2 132-25 605-5 12h, 164. 20%, ob, 0 129-20 | 508-5 129-15 | 512-6 129-10 | 510-6 132-22 | 510-1 3) 128-90 | 639-5 129-22 626-2 129-16 634-0 132-40 605-6 10 128-93 | 510-0 129-38 | 511-7 128-98 | 510-4 132-47 | 511-4 15 128-82 639-5 128-60 623-8 129-03 635-2 | .«..-.. 609-8 20 128-85 | 512-4 128-21 | 510-7 129-12 | 510-0 132-65 | 511-5 25 128-60 637-9 127-74 624-1 129-02 633-7 132-71 609-7 30) 128-23 | 509-3 128-34 | 512-4 128-96 | 510-2 132-73 | 511-9 35 127-85 637-2 128-27 624-1 129-12 633-8 132-71 608-6 40 127-75 | 510-3 128-37 | 512-2 129-15 | 509-2 132-64 | 510-7 45 128-03 636-7 128-01 623-8 129-07 633-8 132-48 609-8 50 128.23 | 512-4 127-81 | 511-9 129-15 | 509-0 132-65 | 509-7 55 128-53 636-5 127-55 624-4 129-03 634-3 132-53 609-8 13h, 174, 21h, 14, 0 128-56 | 510-8 128-00 | 512-4 129-15 | 508-5 132:60 | 508-5 5 128-37 636-3 128-49 624-9 129-12 633-2 132-75 | 608-6 10 128-28 | 509-1 128-78 | 512-6 129-09 | 508-3 133-04 | 510-5 15 128-56 635-4 129-35 625-4 128-93 632-0 133-30 606-6 20 128-78 | 510-2 129-40 | 512.4 129-32 | 507-8 133-07 | 510-4 25 128-75 633-1 129-29 623-9 129.43 631-6 133-27 606-0 30 128-40 | 508-9 129-22 | 513-6 129-23 | 507-0 132-97 | 511-5 35 128-08 633-9 129-15 624-9 129-23 628-8 132-85 606-1 40 128-17 | 508-5 129-27 | 514-2 129-53 | 507-3 132-47 | 512-0 45 128-20 633-8 129.25 622-2 129-50 | 624-3 132-48 606-0 50 128-12 | 510-0 129-93 | 513-8 129-72 | 507-3 | 132-44 | 512-9 55 127-95 630-4 129-16 622-5 130-15 623-3 132-00 606-0 TG WIDE A Gg 5 sag) Gu 8 10 11 | 12 13 14 15 16 18 19 20 | 20 22 23 0 1 BIFTLAR THERMOMETER, . | 48-0 | 48-4 | 48-4 | 48-6 | 48-2 | 47-6 | 47-6 | 47-7 | 47-4 | 46-9 | 466 | 46-0 | 45°5 | 46°6 | 48-1 | 49-1 BALANCE THERMOMETER, . | 461 | 48-4 | 47-6 | 47-8 | 47-9 | 47-6 | 47-6 | 47-6 | 47-4 | 47-4 | 47-2 | 46-5 | 45-8 | 46:3 | 47-1 | 48-1 —— Gottingen Mean Time TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. NoveEMBER 26, 27. of Declination Observation. DECLINA- TION. ae BIFILAR THERMOMETER, BIFILAR Corrected. Se. Div. 512-3 512-0 511-9 512-8 512-3 511-5 DECEMBER 22, 23. . 29 BALANCE Corrected. BIFILAR Corrected. DECLINA- TION. BALANCE Corrected. Se. Div. | Mic. Div. Gu. 514-2 Mice. Div. f 514:5 515-0 515-7 513-9 514-6 49'8 | 49-2 | 49°6 | 50-4 | B14 | 52.0 | 52:3 | 52-6 BALANCE THERMOMETER, DECLINA- TION. s 52: BIFILaR Corrected. DECLINA- TION. BALANCE Corrected. Mic. Div. a Se. Div. 102. BIFILAR Corrected. BALANCE Corrected. Se. Div. 14h, 515-2 514-1 516:1 516-6 515-2 516-0 ee 515-7 517-0 a Mic. Div. 638-0 632-6 627-5 623-1 620-3 619-9 617-0 615-3 612-5 612-1 610-7 609-4 607-4 606-0 605-6 606-7 606-9 603-7 16 | 17 9 2} 41-0 | 42-9 | 43-1 | 44-1 | 450 | 46-0 | 468 | 47-6 | 48-8 | 47-6 | 48-6 | 49-1 | 50+1 | 51-1 | 51-1 | 51-2 | 51-2 2| 39-7 | 41-4 | 41-7 | 49-5 | 43-5 | 44.0 | 45-1 | 45-6 Dec. 234 0b, 1841. Discovered the stirrup of the Declinometer resting on the copper ring. The observations before 0%. were worth- less, on this account. MAG, OBS, VOL. I. The magnet was wound up. 30, TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1841. Gottingen DECEMBER 22, 23. Mean Time Mecliniation DEcLINA- Birivar | BALANcE | DEcLINA- BIFILAR | BALANCE | DECLINA- BiFILaR | BALANCE | DECLINA- BirtLar BALANCE Observation. TION. Corrected. |} Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. f Se. Div. ' Mic. Div. % Se. Diy. | Mie. Div. ‘ Se. Div. | Mic. Div. Sc. Div. | Mic. Div. 182, 29h, on 64, b Bedbccats 521-4 asbdseie ple had 132-97 | 516-5 133-00 | 517-2 scanencde : 596-2 OREO E 602-7 133-10 613-8 133-10 605-6 tate Ss 520-0 eddeldeod- } 04-4: 132-91 | 518-7 133-08 | 517-3 anaoee BORO | aecwcande 599-1 132-93 614-1 133-05 605-9 vee teeees 521-6 seeeeeees | 514-6 132-71 | 518-8 133-05 | 516-8 vee eeeens 594-7 teens 598-9 132-68 614-2 133-28 604-0 eee 522.8 vivecseee | 518-1 133-00 | 519-8 133-86 | 517-7 siete anaes 588-9 seedaeshe 594-8 132-83 611-0 133-07 609-3 Saadeh ds 525-0 b2odbeds | 615-0 132-68 | 518-6 133-30 | 512-3 Sane eats 589-6 Bh CON HLE 600-4 132-80 610-4 132-58 609-4 bap hab ok 525-2 vistasese | 5L48 132-87 | 518-1 132-17 | 515-7 shee eee Bae) Wl ates b. 592-7 132-67 611-2 130-69 601-1 19h, 23h, 3h, 7%, Sa 525-3 ot ed es Ee) 132-67 | 520-6 130-70 | 519-0 bslente scihe 588-9 seer e eens 594-1 132-82 609-0 130-98 600-7 PMG AAP. 521-5 weokte ee. 1286 132-78 | 520-1 131-47 | 523-4 Seen eeen 589-9 bajsie nesters 596-9 132-93 609-8 131-18 601-8 ee 519-2 Witte’ || Silid 6 132-60 | 517-8 130-12 | 514-0 nocatee tents 592-1 s\eterstete athe 594-2 132-45 606-3 129-12 603-5 withthe 517-8 Seat te BLASS 132-20 | 517-5 129-52 | 518-1 sols ouee tte 593-7 aSteratcrolers 593-2 132-24 604-9 129-67 603-5 ye ee 516-4 gitetim sty =" hs pikeady 131-85 | 518-1 130-35 | 520-3 secant 594-5 BSpoGUbOE 593-4 131-95 604-4 130-98 601-5 ene tects 515-5 itebkacte. |) SILOS 131-85 | 519-2 131-40 | 521-6 sans 5019.30) | oopaSace 598-1 131-57 608-4 131-67 599-2 204, oh, 4h. Sh, leteecs 509-2 Teektte sien | OG" L 131-40 | 519-5 132-07 | 519-6 sidlatseaastate 601-6 134-68 601-2 131-30 613-4 131-85 599-0 shaban 507-0 135-53 | 513-5 131-33 | 519-5 131-58 | 520-2 aaletete ape 605-0 135-17 598-9 131-37 618-5 131-73 598-9 Ao ae nG 506-3 134-19 | 511-0 131-02 | 520-7 131-57 | 518-3 agorcene 606-9 134-83 602-0 131-25 617-7 131-38 593-3 asses 506-3 134-82 | 511-0 131-13 | 519-3 131-02 | 519-5 stones bade 606-2 134-90 599-6 131-15 616-9 131-05 591-4 passes 514-5 134-66 | 510-2 131-20 | 520-2 131-02 | 520-3 msctaysreraeiete 604-0 134-26 599-9 131-47 613-6 131-02 591-2 cies ouee 518-2 134-42 | 507-8 131-24 | 519.4 130-96 | 522-2 ahi tence 606-5 133-92 605-6 131-40 612-6 129-95 589-3 21h, 1}, 5h, gh, eed. 522-0 133-73 | 510-2 | 131-50 | 519-8 127-54 | 517-0 Aoaadeas 603-0 133-53 606-5 131-38 608-2 125-23 588-9 aa atsnae 518-2 133-80 | 513-0 131-22 | 519-8 124-82 | 526-6 Lees 602-3 133-57 607-2 131-17 609-3 126-50 590-5 Danette 518-4 133-38 | 516-2 131-30 | 519-7 127-63 | 520-4 Aas 601-3 134-02 612-5 131-05 609-6 127-00 593-9 ee Bests 515-9 133-99 | 518-6 131-05 | 519-2 127-08 | 520-6 sHanooe te 599-2 134-08 612-1 131-45 609-9 127-00 599-1 ate flee bic 516-9 134-32 | 518-9 131-65 | 518-6 127-57 | 521-7 Res oiewicters 600-9 133-60 611-7 131-77 613-4 127-67 598-5 eis thera 516-4 133-97 | 518-6 132-77 | 518-1 128-49 | 520-0 eee Ae 604-0 133-77 610-9 132-93 614-0 128-49 601-8 BIFILAR THERMOMETER, BALANCE THERMOMETER, | 48+5 | 49-8 | 49-8 | 49-9 | 49-4 | 48.7 | 48.4 | 47-9 | 47-6 | 48-5 | 49°5 | 50-1 | 506 | 51-6 | 521 | 52:6 | 531 2 46+5 | 47-3 | 47-8 | 47-8 | 47-8 | 47-5 | 47-3 | 47-1 | 46-9 | 47-4 | 48-5 | 49-4 | 50-1 | 50-6 50:8 | 51-2 | 51-6? Dec. 234 0h, See note on the Declinometer, page 29. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 3l Gittingen January 19, 20. oie Aad 0 Declination |} Droriya- | Brrizan | Bauance | Dectina- | Brrmar | BALANcE| Decurna- | Birruar | Bavance | Decuina- | Birrtar | BaLance Observation. TION. Corrected.| Corrected. TION. Corrected.| Corrected} TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. e prs Div. ' Mic. Div. Y Se. Div. | Mic. Div. Se. Div. | Mic. Div. & Se, Div. ! Mic. Div. 104. 182 Qoh 0 123-98 | 519-1 | 958-1 127-90 | 523-3 948-1 129-30 | 512-0 944-5 6 123-45 | 520-4 | 959-5 128-03 | 523-1 945-3 129-80 | 512-3 942-9 12 123-25 | 518-9 961-1 127-97 521-3 948-7 130-22 | 512-7 942-6 18 123-42 | 517-8 958-9 127-97 | 519-9 | .-.-.- 129-78 | 512-7 944-4 24 123-70 | 516-8 960-5 127-27 | 520-7 944-8 130-13 | 512-2 947-4 30 123-58 | 517-9 958-7 W227 |) b217, 945-4 130-09 | 512-1 946-7 36 123-17 | 517-5 | 958-2 128-80 | 521-7 | 946-9 131-15 | 513-2 | 950-2 419. | ion 519-2 | 958-0 127-27 | 520-1 | 942-9 | ---..-... 513-4 | 951-5 48 123-73 | 517-5 958-4 126-97 | 523-9 942-7 132-37 | 512-6 954-4 54 125-48 | 516-6 | 959-1 125-79 | 523-2 | 943-0 132-93 | 512-3 955-5 114, 19» 23h 0 125-92 | 515-0 959-9 125-63 | 525-6 943-7 132-44 | 512-0 957-5 6 125-90 | 513-8 957-2 126-19 | 523-7 940-7 132-98 | 513-1 957-9 12 125-05 | 515-0 956-0 126-30 | 524-0 941-9 133-13 | 512-2 957-6 18 125-35 ; 517-0 962-9 126-82 | 523-8 942.4 133-11 | 512-3 958-4 94 126-28 | 515-2 962-1 127-55 | 521-3 941-7 133-30 | 513-0 956-9 30 125-48 | 514-6 | 958-3 125-79 | 524-2 938-1 133-67 | 512-7 956-2 36 124-07 | 523-5 952-0 126-72 | 524-3 940-2 133-67 | 512-9 957-4 42 126-48 | 520-6 950-3 126-62 | 523-3 940-8 133-80 | 513-2 956-0 48 126-40 | 527-4 | 944.2 126-59 | 524-2 938-2 134-27 | 513-5 955-2 54 128-17 | 521-0 943-7 126-77 | 524-5 940-7 134-31 | 514-1 954-8 12h, 204, oh 0 128-25 | 516-8 | 942-6 128-65 | 522-1 | 941-0 | 134-47 | 514-0 | 956-8 6 131-47 | 517-2 | 939.4 129-27 | 522.2 941-9 134-37 | 514-8 956-6 12 134-13 | 514-2 | 934-6 129-65 | 522-3 942-6 134-33 | 515-3 958-2 18 134-92 | 514-4 | 928-5 129-65 | 521-6 941-1 134-44 | 515-6 958-4 24 134-57 | 519-9 | 919-2 129-43 | 522.2 939-3 134-92 | 516-1 958-5 30 132-78 | 528-8 911-2 129-12 | 520-6 941-8 135-25 | 516-9 960-3 36 131-62 | 529-0 907-5 129-30 | 518-0 942-3 135-72 | 518-1 962-4 42 130-55 | 527-0 908-1 129-18 | 518-4 943-5 | .--seeee- 517-9 962-6 48 129-58 | 525-0 909-1 129-23 | 517-5 942-9 135-15 | 518-0 964-4 54 129-49 | 523-2 913:5 129-21 | 517-9 941-8 135-02 | 519-5 964-0 13h, Q1h, 1h 0 129-92 | 521-8 918-2 129-15 | 518-7 943-3 135-28 | 519-5 963-1 6 128-98 | 520-1 918-6 128-70 | 515-9 943-3 135-60 | 520-7 960-9 12 127-48 | 520-1 919-9 129-23 | 516-1 945-4 135-73 | 521-4 959-1 18 126-28 | 519-9 919-4 128-78 | 514-3 944-6 135-32 | 521-5 956-8 24 125-60 | 521-0 922.1 128-94 | 515-2 944-9 135-08 | 521-5 959-4 30 125-68 | 519-5 924.6 128-37 | 515-2 945-7 135-13 | 522-0 952-1 36 125-66 | 518-6 925-9 128-97 | 516-0 947-9 135-17 | 522-7 951-1 42 125: /Salole-2 937-6 128-98 | 515-0 945-6 136-05 | 522.7 948-6 48 125-62 | 519-2 939-5 129-23 | 515-5 945-6 135-95 | 522-4 | 948-6 54 126-26 | 519-2 941-4 129-52 | 513-5 944.9 136-25 | 523-5 947-5 moet . at tee Ld vee 3 | 14 [15 |. 16 | 17 | 18 |. 19 | 20 | 21 | 22 |. 23] 0 | 2 | Birman Tuermomeren, 55:6 | 56:8 | 568 | 54-9 | 54-6 | 55:8 | 57-0 | 37 578 | 56-7-| 54-6 | 53:5 | 53:6 | 55:6 BaLANCcE THERMOMETER, 561 | 5 8:0 | 57°3 | 55'9 | 56°5 | 57°5 59°4 | 57:3 | 56°5 | 55°38 | 54°6 | 577 During the Terms of 1842, the Bifilar was observed 2™, and the Balance 4™, after the corresponding minutes of Declination observation. January 204 62, 1842. Discovered some of the fibres of the Declination thread broken and caught on the copper ring ; the fibres were detached from the ring, but the thread broke away fibre by fibre during the remainder of the term. The observations before 64. are corrected by minus 13! in order to make the readings nearly as on other days, the difference being due to torsion force. These obser- vations are given here; they are not however considered of much, if of any value, as the fibres were probably breaking throughout the whole term. 32 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. Gottingen JANUARY 19, 20. FEBRUARY 25, 26. Mean uae oO Declination Deciina- | BririvaR | BaLance | Decuina- | Birivar | BALANCE | Decrina- Birmar | Batance | Dectina- Brri~aR | BALANCE Observation. TION. Corrected. |Corrected. TION. Corrected. |Corrected. TION. Corrected. |Corrected. TION. Corrected. |Corrected. Min. 4 Se. Div. ' Mic. Diy. ‘ Se. Div. Mice. Diy. Se. Div. Mice. Div. \ Sc. Div. Mic. Div. oh, 6h, 104. 14h, 0 136-28 | 524-9 | 945-8 | ......+-- 525-7 | 952-3 524-3 | 862-1 132-25 | 522-6 | 869-7 6 136-42 | 525-3 | 944-1 | .......-. 525-4 | 952-2 518-4 | 869-0 132-82 | 523-7 | 869-2 12 136-53 | 525-7 | 943-4 | .......-. 525-6 | 953-5 517-6 | 879-7 133-64 | 521-5 | 867-8 18 136:45 525-37 | 943-4 | oon... 525-2 | 953-6 516:0 | 884-2 134-15 | 521-7 | 866-7 24 136:53 | 525-4 | 942-5 | ......--. 524-5 | 956-4 515-7 | 883-8 133-82 | 522-9 | 863-8 30 136-33 | 525-6 | 942.9 | .......-. 523-6 | 956-9 PUKo Rs) Ah Bonne 134-40 | 521-0 | 864-0 36 136-15 | 525-8 | 941-8 | ........- 523-1 957-2 522-9 | 878-0 133-67 | 523-5 | 862-7 42 136-15 | 526-2 | 941-7 | ......... 523-1 | 957-7 524-5 | 878-4 134-70 | 523-6 | 862-9 48 136-05 | 526-6 | 943-0 | .......-. 524-0 | 957-5 524-8 |-879-2 134-72 | 520-9 | 861-1 54 135-85 | 526-6 | 945-0 | ......--. 524-3 | 957-3 523-9 | 877-0 134-33 | 523-9 | 861-1 3h, 7h, 114, 15h, 0 135-70 | 527-2 | 944-0 | ......-.. 523-9 | 956-9 522-1 | 876-1 135-60 | 523-9 | 861-7 6 135-72 | 527-4 | 944.4 | ......... 523-8 | 956-5 522-8 | 875-9 135-33 | 522-9 | 860-4 12 1:35:75 ODT) | 2040-48 Niece =s 523-6 | 958-6 521-0 | 877-6 135-02 | 525-7 | 861-1 18 135-68 | 526-8 | 944-0 | ......... 524-1 | 958-0 523-1 | 876-2 135-22 | 526-5 | 861-2 24. Sees) || Pore NW SEO) |) Abocndes: 524-7 | 958-3 520-4 | 878-2 134-90 | 525-8 | 859-6 30 135-39 520-98 | 1943-0), [ieee = - 525-0 | 958-0 518-8 | 879-2 133-53 | 526-9 | 858-6 36 135-30010526-68 | C9420 leat 525-0 | 957-8 525:0 | 878-3 132-58 | 525-4 | 858-9 42 35-33 1026-70 Goes N\ieeeiens = = 524-1 | 959-5 522-8 | -:..-- 131-65 | 523-6 | 861-2 48 Lolo mo26:3% |e9oko fleet. <5. 523-6 | 959-8 526-0 | 879-6 131-16 | 523-1 | 863-0 54 ealOy IPSs) WI |) Gnccodbac 523-3 | 961-4 521-1 | 882-7 131-98 | 521-2 | 863-4 4h, gh. 12h, 16. 0 138-20 | 526-9 | 953-6 | .......-. 522-3 | 962-4 519-7 | 879-9 131-20 | 521-1 | 864-4 6 139-79 0526-58 kO5Be7) Weneoseene 520-9 | 965-3 520-8 | 879-9 131-70 | 521-2 | 866-3 12 USS°S5)\oO26s1) WE95Se23" [ewan 521-7 | 966-2 521-1 | 879-2 131-69 | 519-7 | 867-1 18 138-89 | 526-8 | 954.1 | ........- 522-1 966-0 519-7 | 881-1 131-62 | 522-0 | 865-8 24 138-83 | 526-8 | 955-4 | ......... 522-9 4 965-8 520-9 | 879-4 131-76 | 520-6 | 866-2 30 138-82 | 525-6 | 954.9 | ......... 519-9 | 964-4 522-0 | 879-1 131-69 | 521-5 | 866-1 36 138-85 | 525-6 | 954-6 | ......... 517-8 | 966-6 520-9 | 881-0 131-90 | 522-2 | 864-3 42 138-56) 595-60 INO54e5) leeeehence. 517-8 | 966-3 519-6 | 882-1 132-44 | 522-4 | 863-6 48 138-60) | 525-8) | 95523) eeeneee 516-9 | 968-6 519-5 | 881-4 132-33 | 521-6 | 863-6 54 138'53 | 525-4" || 955-5 |) ......... 519-1 968-4 522-9 | 881-7 132-50 | 524-5 | 863-4 5h, gh, 13}, 17h, 0 138-43 | 525-6 | 954-9 | -.-....4. 519-3 | 968-1 521-9 | 883-7 132-25 | 522-6 | 863-8 6 138:37alpozo- \nGon9) |esaceense = 519-7 | 967-9 520-4 | 886-3 132-40 | 521-7 | 863-6 12 BIH) |) Btn) |) Osisseré || Rosas tose 519-5 | 969-2 519-8 | 884-6 132-50 | 522-7 | 862-8 18 UB Gs) || 2X00) |) OsiSol |) pebsssoss 520-6 | 968-6 522-4 | 883-8 132-82 | 520-3 | 864-2 24 W3777) |) 026-8) |N958-45 Ween. 520-2 | 969-1 522-3 | 882-0 132-85 | 522-3 | 863-3 30 UW3-77 | 026-45 9959-0) Wercene --- 519-9 | 968-2 523-2 | 880-4 132-64 | 522-2 | 864-1 36 138-03 | 526-3 | 959-1 | --....... 519-5 | 970-1 521-2 | 880-0 132-35 | 522-3 | 863-6 42 1137-950) 525-8 OSS ale leeeer ace 519-0 | 970-6 522-1 | 877-4 132-05 | 522-3 | 866-1 48 138-03 | 525-4 | 958-1 |) ----...-- 519-2 | 970-2 521-6 | 873-2 132-27 | 522-7 | 865-1 54 138-01 | 526-1 958-0 | -----000- 517-6 | 971-9 522-0 | 870-8 132:28 | 523-3 | ---... Hour, 2 3 | 4 FAR 10 fio] 2] 13] uw | a 16 | 17 BIFILAR THERMOMETER, | 58:8 | 60-1 | 60-4 | 59:6 | 58:7 | 58-4 | 57-6 | 57-2 | 56:8 2152-0 | 52-6 | 521 | 51-6 | 52.2 | 52-5 | 52:9 | 53-3 BALANCE THERMOMETER, 60-9 | 61.6 | 62:2 | 61-2 | 60-2 | 59.9 | 59-2 | 58.9 | 58-6 2152-1 | 52-6 | 53.1 | 52-2 | 53-9 | Bal | 54:6 | 551 p Jan. 194, 204, See note on the Declinometer, page 31. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 33 Gottingen FEBRUARY 25, 26. akean. Time DECLINA- BrrizaR | BAaLaNcE TION. Corrected. | Corrected. f Se. Div. | Mic. Div. DEctina- BiritaR | BAaLance TION. Corrected. | Corrected. DECLINA- Brrmar_ | BaLance Declination DECLINA- BiFILAR | BALANCE TION. Corrected.| Corrected. Observation. TION. Corrected. | Corrected. Min. f Se. Div. t Se. Div. | Mic. Div. e Se. Div. | Mic. Diy. Mic. Diy. 18h, eee eee BIFILAR THERMOMETER, | 528 52-9 | 53°6 | 53° 3 52°6 i 51:4 ai 50°6 58°7 2-1 | 54:1 a 5671 | 58-2 59:1 | 59:9 | BALANCE THERMOMETER, | 54°9 | 55:2 | 55-9 | 55-2 58°2 | 57°2 | 56°24 tsetse ste sein cient teen atc san raucous oecmertommrtec 12359: MAG, OBS. VOL. I. 1 34 Gottingen Marcu 23, 24. phen y Tse pecinetion DECLINA- BiritaR_ | BALance | Decwina- BirizAR | BaLANce ] DEcLINA- BIFiLaR BALANce | DEcLINA- Bririzak_ | BALance servation. TION. Corrected.| Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. us Se. Div. ‘ Mic. Div. Z ) Se. Div. '! Mie. Div. - Se. Div. | Mic. Div. # Sc. Div. | Mic. Diy. 104, 14h, 18}, Qoh, 0 112-64 | 529-1 941-9 121-50 | 527-2 | 673-0 126-90 | 531-6 | 823-3 129-60 | 511-3 | 865-7 6 112-87 | 531-7 | 931-4 121-53 | 527-5 | 686-5 126-68 | 528-9 | 822-4 131-32 | 506-8 | 867-9 12 113-63 | 535-0 | 918-5 121-68 | 526-7 | 696-9 126-62 | 531-0 | 831-6 131-43 | 502-3 | 867-4 18 114-11 | 532-9 | 917-1 121-95 | 525-6 | 707-6 126-77 | 528-8 | 830-7 131-22 | 497-0 | 867-7 24 113-88 | 534-4 | 916-0 121-85 | 523-7 | 717-4 127-23 | 529-4 | 831-1 129-96 | 501-1 | 868-7 30 115-02 | 532-9 | 893-3 121-95 | 525-3 | 728-8 126-05 | 532-1 829-4 132-33 | 503-9 | 870-2 36 115-72 | 534-6 | 885-1 122-07 | 524-3 | 737-5 126-87 | 532-9 | 830-7 133-64 | 506-6 | 870-2 42 115-57 | 535-3 | 878-4 121-43 | 527-0 | 748-0 127-84 | 531-9 | 830-9 132-73 | «--+-- 868-7 48, 117-23 | 531-4 | 871-6 122-87 | 525-3 | 762-9 125-85 | 538-3 | 827-9 131-02 | 502-4 | 868-5 54 116-90 | 529-9 | 870-6 122-90 | 524-8 | 769-4 126-82 | 537-1 829-0 131-09 | 502-3 | 866-8 114, 154, 19%, 23h, 0 117-70 | 529-5 | 865.8 123-44 | 526-3 | 777-3 126-87 | 536-0 | 827-3 130-13 | 503-9 | 866-4 6 118-90 | 528-3 | 863-9 124-05 | 528-6 | 783-4 125-59 | 537-3 | 824-8 132-20 | 505-8 | 869-2 12 119-85 | 528-7 | 560.0 125-48 | 523-4 | 790-8 126-28 | 537-9 | 826-6 131-50 | 508-9 | 871-5 18 120-32 | 530-3 | 855.9 124-77 | 526-5 | 796.3 127-37 | 534-6 | 828-1 132-57 | 511-5 | 869-0 24 122.02 | 527-3 | 848.0 124-37 | 527-5 | 799-2 126-25 | 534-2 | 831-1 133-27 | 512-1 | 867-6 30 121-12 | 524-9 | 836-0 124-52 | 529-7 | 800-5 128-28 | 533-3 | 834-1 133-45 | 515-8 | 866-2 36 121-05 | 529-4 | 826.2 124-52 | 527-1 804-0 125-97 | 530-1 836-7 133-65 | 515-1 | 865-7 42 120-82 | 532-4 | 824.9 124-24 | 530-6 | 805-6 125-48 | 529-5 | 838-2 133-00 | 515-5 | 865-0 48 119-83 | 532-9 | 820.9 124-05 | 527-1 | 807-0 126-72 | 527-6 | 842-3 132-33 | 518-7 | 863-5 54 120-72 | 531-1 808-6 124-08 | 523-9 | 813-8 126-32 | 526-3 | 845-0 131-80 | 521-0 | 863-2 12, 16), 204, oh, 0 120-12 | 528-8 | 795-7 122-80 | 530-3 | 812-8 125-45 | 527-8 | 849-9 131-93 | 523-4 | 858-7 6 122-65 | 525-5 | 786-8 124-82 | 529-3 | 815-5 124-13 | 519-9 | 849-0 133-05 | 523-7 | 857-5 12 125-50 | 525-9 | 769-3 124-72 | 529-2 | 815-7 125-33 | 524-9 | 850-0 133-13 | 523-2 | 858-4 18 129-96 | 527-6 | 739-8 124-77 | 529-5 | 816-8 127-07 | 526-5 | 851-8 133-38 | 524-6 | 855-7 i 24 133-33 | 514-6 | 682-6 124-82 | 529-8 | 818-8 125-88 | 525-0 | 853-0 134-15 | 524-4 | 858-5 30 134-35 | 507-9 | 623-5 125-75 | 526-8 | 820-5 125-59 | 520-6 | 852-6 134-15 | 523-8 | 856-5 36 129-03 | 521-0 | 586-3 125-23 | 527-7 | 822-6 126-48 | 530-4 | 857-4 134-22 | 524-3 | 857-5 ; 42 129-69 | 531-7 | 583-3 125-82 | 528-3 | 822.9 122-00 | 522-2 | 854-3 134-05, | 521-8) | Saee-.- 48 124-10 | 506-4 544-9 126-75 | 526-8 | 822.9 124-40 | 524-7 | 852-9 134-27 | 523-7 | 855-6 H 54 121-90 | 483-9 | 521-2 126-72 | 525-8 826-2 123-45 | 524-4 | 851-4 134-66 | 523-7 | 856-0 13h, 174, 214, 1}, 0 125-03 | 477-7 | 532-0 | 127-35 | 526-3 | 828-1 ] 127-77 | 527-1 | 849-0 | 134-50 | 524-1 856-3 6 135-79 | 511-6 | 605-1 | 127-70 | 523-7 | 828-3 | 124-27 | 525-5 | 849-1 | 134-70 | 523-0 850-8 12 140-38 | 531-1 | 575-7 | 128-25 | 530-2 | 826-8 | 124-48 | 526-0 | 846-3 | 134-88 | 524-3 849-6 18 131-02 | 534-6 | 550-3 128-92 | 523-0 | 827-3 126-05 | 523-2 | 846-4 134-79 | 524-3 850-4 24 124-75 | 531-9 | 556-9 128-74 | 526-4 | 827-3 128-10 | 521-9 | 857-1 134-93 | 524-9 849-9 | 30 120-62 | 523-7 | 584-2 127-88 | 530-9 | 825-8 126-82 | 522-2 | 856-0 134-99 | 525-8 849-6 36 119-76 | 519-8 | 611-5 127-97 | 528-4 | 824-5 126-46 | 520-5 | 859-2 134-75 | 526-0 849-6 42 120-89 | 519-9 | 631-1 126-45 | 532-0 | 826-4 125-62 | 519-3 860-2 134-73 | 526-2 848-1 hf 86 48, 121-49 | 526-4 | 642-0 126-87 | 531-4 | 826-6 127-35 | 516-0 | 861-0 134-66 | 525-9 850-3 54 121-47 | 528-9 | 647-2 127-47 | 528-8 | 825-7 128-21 | 512-4 864-1 134-27 | 527-7 849-0 Hour, | 10 1 } BiIFiLAR THERMOMETER, TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. BALANCE THERMOMETER, . t t is | 19 | 20 | 21 56-6 | 565 | 56-9 | 56-7 | 57-6 | 58-6 | 59-4 | 60-1 | 60:2 58-2 | 59:2 | 60-0 | 60°5 | 61-0 | 61.0 TrerM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 35 Gittingen Marcu 23, 24. APRIL 20, 21. ao ime Declination DECcLINA- BIFILAR BALANCE | DEcCLINA- Brri.ar | BaLAnce | Decwina- BIriLaRr BauaAnce J Dectina- Birinar | BaLance Observation. TION. Corrected.| Corrected, TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. Min. y Se. Div. | Mic. Div. Se. Div. | Mic. Div. ‘ Se. Diy. | Mic. Div. 4 Se. Div. | Mic. Div. Qn. 6}, 102. 14h, 0 134-30 | 529-1 848-2 536-7 | 863-9 131-58 | 532-0 | 872-4 128-08 | 529-1 | 800-9 6 133-87 | 526-9 | 848-5 542-3 | 864-5 131-49 | 532-0 | 870-8 129-27 | 532-6 | 799-7 12 134-08 | 528-8 | 848-3 543-1 865-7 131-76 | 532-3 | 870-9 130-40 | 532-5 | 790-5 18 134-22 | 529-4 | 848-3 540-5 | 870-0 132-33 | 535-5 | 863-9 125-72 | 530-8 | 792.4 24 133-90 | 529-3 | 847-0 533-1 | 872-2 131-65 | 546-4 | 854-2 123-60 | 529-0 | 799-6 30 133-98 | 5276 | 846-3 532-4 | 872-0 133-02 | 543-8 | 852-5 123-50 | 527-8 | 805-8 36 133-75 | 527-7 | 845-8 530-9 | 869-9 133-08 | 538-5 | 851-2 123-60 | 530-1 | 808-7 42 133-57 | 528-9 | 845-6 529-4 | 868-5 132-97 | 532-8 | 849-8 126-55 | 530-2 | 808-0 48 133-17 | 527-6 | 844-8 529-3 | 867-9 132-37 | 529-1 | 853-1 127-95 | 526-7 | 800-5 54 132-97 | 528-3 | 843-5 532-9 | 867.9 132-15 | 528-4 | 849-8 126-73 | 527-1 | 790-6 3h, 7h, 1 154, 0 132-84 | 529-7 | 842-6 533-8 | 869-1 131-73 | 529-1 | 856-2 125-32 | 526-2 | 784-1 6 132-53 | 528-1 845-2 532-6 | 868-9 131-82 | 532-0 | 856-0 124-73 | 522-5 | 784-3 12 132-44 | 527-0 | 844-3 531-2 | 869-0 131-73 | 531-1 | 858-6 124-66 | 518-2 | 776-0 18 132-08 | 529-2 | 843-7 531-4 | 866-9 131-65 | 529-1 | .--.... 123-31 | 511-8 | 773-8 24 131-89 | 528-2 | 843-8 534-2 | 864-9 133-88 | 533-6 | 861-5 122-38 | 505-8 | 769-5 30 131-65 | 529-7 | 844-1 538-8 | 862-9 135-39 | 537-1 | 854-9 123-31 | 503-4 | 766-0 36 131-60 | 530-3 | 844-8 539-5 | 860-6 135-83 | 539-5 | 849.4 125-53 | 497-6 | 755-0 42 131-29 | 529-7 | 844-9 537-7 | 859-4 135-06 | 541-1 840-4 125-68 | 496-2 | 733-4 48 130-78 | 529-0 | 844-5 535-4 | 859-4 134-57 | 542-6 | 835-0 124-92 | 497-6 | 713-3 54 130-82 | 528-6 | 844-3 535-3 | 859-1 134-02 | 540-3 | 833-2 126-25 | 476-7 | 718-2 4h, gh, 12h, 164, 0 131-05 | 536-4 | 844-4 533-5 | 860-9 132-84 | 541-9 | 829.8 131-53 | 470-3 | 714-9 6 130-12 | 528-9 | 844-6 527-9 | 861-7 132-84 | 541-1 827.9 139-82 | 472-8 | 734-5 12 130-62 | 535-7 | 844-8 530-7 | 862-7 132-22 | 542-7 | 822-5 146-82 | 502-0 | 728-2 18 130-13 | 531-6 | 846-6 526-0 | 858-7 131-73 | 543-1 818-3 145-65 | ------ 712-8 24 129-93 | 532-0 | 846-8 535-9 | 851-5 130-96 | 542-4 | 814.4 143-45 | 508-6 | 705-7 30 129-73 | 532-1 | 847-7 549-1 827-5 129-95 | 540-2 | 812-7 142-74 | 506-2 | 709-5 36 129-93 | 532-8 | 848-2 575-1 814-1 129-67 | 534-9 | 814-2 141-57 | 508-4 | 708-7 42 124-93 | 534-7 | 847-9 558-4 | 801-7 128-14 | 527-1 818-9 139-78 | 517:3 | 717-1 48 129-08 | 532-2 | 849-4 556-5 | 795-1 127-32 | 525-2 | 822.9 137-92 | 516-5 , 718-5 54 130-20 | 524-9 | 849-7 543-8 | 797-3 128-38 | 525-0 | 828-9 | ..-....... 5180 | 717-2 5h, gh, 13}, 7" 0 130-43 | 534-1 852-0 530-1 795:3 129-69 | 519-8 | 832-4 135-32 | 517-2 | 722-5 6 129-98 | 526-4 | 854-7 532-7 | 793-7 130-35 | 522-9 | 834-1 133-37 | 519-2 | 727-1 12 128-94 | 519-7 | 861-1 539-3 | 790-8 | 131-65 | 522-5 | 835-4 131-98 | 521-4 | 737-4 18 128-25 | 518-8 | 862-1 541-5 | 788-6 136-02 | 533-7 | 827-5 131-22 | 525-3 | 745-4 24. 127-05 | 517-7 | 864-5 536-3 | 787-6 137-48 | 535-0 | 814-2 131-16 | 526-3 | 757-9 30 125-33 | 525-8 | 866-0 530-9 | 787-4 136-65 | 530-8 | 305-1 131-45 | 524.0 | 761-0 36 125-30 | 531-1 864-5 527-0 | 787-6 135-33 | 527-7 | 796-6 130-87 | 526-1 763-9 42 125-28 | 530-0 | 865-4 532-8 | 787-5 132-45 | 528-5 | 794-2 130-83 | 525-0 | 769-0 48 125-48 | 532-6 | 864-7 536-2 | 786-2 130-78 | 528-7 | 794-3 129-27 | 529-4 | 776-4 54 125-68 | 533-0 | 864-8 535-2 | 796-3 128-94 | 527-7 | 799-1 129-28 | 532-5 | 781-2 oe Ee Bm) Voy] 10 yo | 12 | 12| 18 | 14 17 BIFILAR THERMOMETER, | 60°4 | 60°4 | 60-9 | 61:9 | 63-1 | 62-4 630 | 62-4 | 618? 59:6 59°6 | 591 | 59-1 | 59:0 | 59-4 | 59-2 | 58°8 BALANCE THERMOMETER, | 61-1 | 61:3 | 61:9 | 62:9 | 63-7 | 63°9 | 64:2 64:2 64:2 2] 58-7 | 59°2 59:2 59-2 | 59°5 | 60-1 60:2 | 59-7 36 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. Gittingen APRIL, 20, 21. Mean Tune Declination DECLINA- BIFILAR | BALANCE | DECLINA- BIFILAR BALANCE | DeEctina- Brrmar | Batance | Dectina- BiriLAR | BALANCE Observation. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. i Se. Div, | Mie. Div. 4 Se. Div. ! Mic. Div. 4 Se. Div. | Mic. Div. f Sc. Div. | Mic. Div. 18h 22, gh gh 0 128-87 | 534-2 | 790-1 133-78 | 516-7 | 858-1 140-33 | 526-9 | 848-5 133-64 | 550-0 | 913-2 6 128-78 | 535-8 | 795-6 135-32 | 512-8 | 861-4 140-27 | 530-4 | 847-8 133-67 | 546-2 | 914-8 12 128-27 | 535-6 | 800-7 135-22 | 513-4 | 860-5 140-13 | 530-3 | 848-5 132-60 | 542-7 | 916-6 18 127-88 | 535-2 | 809-3 134-44 | 515-7 | 859-2 139-72 | 532-8 | 845-8 132-84 | 538-7 | 920-2 24 127-81 | 532-6 | 516-2 135-23 | 516-1 863-6 140-18 | 537-5 | 847-6 131-63 | 544-1 922-0 30 127-20 | 528-5 | 822.4 136-83 | 514-4 | 864.4 140-38 | 542-7 | 849-7 131-09 | 544-5 | 924-8 36 127-21 | 527-8 | 828-6 136-62 | 510-4 | 863-0 140-70 | 543-9 | 852-2 131-05 | 546-2 | 924-7 42 127-10 | 527-2 | 834-2 137-18 | 511-0 | 864-1 140-56 | 544-8 | 854-9 131-13 | 545-8 | 925-2 48 128-12 | 526-3 | 840-1 136-93 | 510-9 | 863-5 140-40 | 544-6 | 858-4 132-97 | 539-0 | 928-1 54 127-35 | 529-0 | 842-1 137-60 | 510-6 | 860-8 140-32 | 546-3 | 861-0 132-98 | 534-9 | 927-9 19h 93h, 3h qh 0 126-87 | 532-0 | 843-4 137-70 | 508-7 | 861-6 139-80 543-9 | 864-9 131-70 | 538-8 | 925-5 6 127-23 | 529-8 | 845-4 137-58 | 505-0 | 868-4 139-58 535-6 | 868-6 133-78 | 535-3 | 928-3 12 127-72 | 527-4 | 847-7 138-37 | 501-4 | 868-6 139-30 530-0 | 873-1 133-20 | 536-0 | 923-1 18 129-56 | 527-4 | 850-3 138-95 | 505-9 | 863-9 140-30 | 532-3 | 875-5 132-88 | 534-1 920-8 24. 130-43 | 525-3 | 852-0 139-12 | 508-4 | 860-6 141-58 | 537-2 | 883-0 132-40 | 535-7 | 916-7 30 132-91 | 530-5 | 853-9 139-42 | 507-9 | 858.7 141-73 | 541-3 | 886-9 132-93 | 537-9 | 911-9 36 133-25 | 524-3 | 856-5 139-32 | 504-1 862-5 139-29 / 540-3 | 897-9 133-47 | 539-9 | 906-1 42 134-65 | 521-9 | 858-4 140-13 | 501-7 | 863-5 136-32 | 535-1 904-3 133-60 | 542-5 | 902-6 48 135-80 | 518-1 858-4 141-00 | 499-9 864-1 129-18 | 535-2 | 909-9 133-70 | 540-5 | 898-3 54 134-65 | 515-8 | 859-1 141-48 | 503-3 858-0 127-34 546-3 | 915-4 133-27 | 539-9 | 896-5 90h oh, 4h gh 0 133-20 | 511-7 | 859-8 141-17 | 505-2 | 859-2 128-77 | 538-0 | 918-4 132-55 | 535-0 | 892-4 6 130-62 | 505-7 | 859-4 141-33 | 508-9 | 855-4 130-75 | 532-9 | 921-3 132-15 | 535-4 | 892-9 12 130-75 | 506-5 | 861-4 142-38 | 506-8 | 361-6 128-97 | 546-4 | 923-9 131-62 | 537-1 895-0 18 131-69 | 507-1 864-1 141-27 | 500-7 | 861-7 127-57 | 553-9 | 924-7 131-13 | 539-7 | 894-7 24 134-47 | 510-0 | 866-2 140-50 | 501-5 | 861-7 128-88 | 554-6 | 927-3 130-78 | 535-3 | 895-3 30 135-06 | 511-2 | 868-8 141-47 | 501-8 | 858-6 131-18 | 554-8 926-6 129-62 | 534-5 890-6 36 138-96 | 496-7 | 864-0 141-28 | 505-6 | 858-8 131-16 | 548-0 | 927-2 125-99 | 542-8 | 871-9 42 132-37 | 508-9 | 865-3 141-05 | 510-5 | 854-7 134-68 | 552-6 | 924-0 127-23 | 552-0 | 876-8 48 133-11 | 506-8 | 868-4 141-67 | 509-6 | 854-4 135-79 | 542-0 | 920-8 132-27 | 540-6 | 876-3 54 134-18 | 508-1 | «..+- 140-90 | 516-1 | 850-3 136-42 | 533-2 | 919-8 132-93 | 534-7 | 870-2 Qh 12. 5h gh 0) 133-40 | 509-3 | 871-2 140-92 | 516-7 | 853-0 135-75 | 531-8 | 921-8 132-93 | 532-5 | 867-9 6 133-65 | 510-4 | 869-6 140-98 | 523-3. | 851-5 134-95 | 524-4 | 925-2 132-20 | 533-2 | 865-2 12 133-35 | 511-7 | 868-4 140-30 | 523-5 | 853-2 131-32 | 541-2 | 926-2 131-83 | 534-9 | 862-6 18 132-70 | 509-4 | 869-0 141-42 | 522-1 854-7 Joceeeee ees 555-5 | 928-4 132-37 | 536-0 | 863-8 24 133-11 | 510-9 | 869-0 141-68 | 521-9 | 855-5 129-52 | 558-9 | 930-1 132-37 | 535-1 860-7 30 132-98 | 513-5 | 868-3 140-78 | 521-7 | 851-6 127-67 | 554-0 | 926-9 132-80 | 536-7 | 859-0 36 132-68 | 513-1 867°5 140-92 | 525-1 847-6 128-97 | 551-0 | 922-6 133-40 | 536-6 | 857-4 42 132-58 | 515-7 | 866-9 141-51 | 524-1 848-7 129-27 | 552-0 | 919-8 133-67 | 535-2 | 852-8 48 134-28 | 513-0 | 866-6 141-27 | 524-6 | 845-9 130-27 | 553-3 | 915-6 133-25 | 533-8 | 851-2 54 133-80 | 514-5 | 865-1 140.78 | 525-0 | 845-8 132-33 | 551-8 | 912-6 132-45 | 531-3 | 853-5 Hour, 18 | 19 20 | 21 | 22 2540 \) 1 ee Wea ee le © Meee 8 | 9 10 BIFILAR THERMOMETER, 58-6 | 60-4 | 618 | 63-8 | 65°7 | 67-7 | 68-1 | 68-4 | 686 | 68-0 | 67-6 | 67.24 Bauancr THERMOMETER, | 59:6 | 59-1 | 58-7 | 58:7 | 58:5 | 59:5'| 60-2 | 61:6 | 63:1 | 64:3 | 66-2 | 66°8 | 67-3 | 67-3 | 67-0 | 67-3 | 67-34 hs am Se ee eee eS eee TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 37 Gottingen May 27, 28. Mean Time 0 f] Declination || Drcrina- Birinar | BALANce | DEcLINaA- BIFILaR BALAnce | Dercrina- Birman | BALANCE DECLINA- Bir1LarR | BALANCE Observation, TION. Corrected. | Corrected. TION. Corrected.| Corrected.| TION. Corrected.| Corrected. TION. Corrected.| Corrected, Y Se. Div. | Mic. Div. u Se. Div. | Mic. Div. | u Se. Div. | Mic. Div. ue Se. Div. ' Mic. Div. 125-02 125-48 125-59 125-50 125-55 125-95 125-72 125-95 126-13 126-88 1g | 19 | 20 | 21 | 22 | 28 | 0 | 1 BIFILAR THERMOMETER, . 56-6 | 55:8 | 55:8 | 56-0 | 55-8 | 55-9 | 56-9 | 58-1 | 59°8 | 60-7 BALANCE THERMOMETER, . .9 | 59: 57-2 | 56:3 | 56-2 | 56:3 | 56-2 | 56:3 | 56°7 | 57-8 | 58-7 | 60.1 MAG. OBS. VOL. I, K 38 TERM-DAy OBSERVATIONS OF MAGNETOMETERS, 1842. Gottingen May 27, 28. JUNE 22, 23. Mean ane G Declination || Decnrna- BiFitar | BaLance | DeEciina- Brrivar | BALANCE DECcLINA- Birizar | Bauance | DEeEctina- BIFILAR | Balance Observation TION. Corrected. |Corrected. TION. Corrected. |Corrected. TION. Corrected. |Corrected. TION. Corrected. | Corrected. Min. 4 Se. Diy. Mie. Div. Y Sc. Div. | Mic. Div. Se. Div. | Mic. Div. 9 Se. Div. | Mic. Div. Qh, 6s 102. 14h, 0 135-82 | 539-2 | 794.2 130-05 | 546-1 | 825-4 504:5 | 792-6 132-70 | 554-5 | 737-8 6 136-00 | 536-7 | 797-7 130-76 | 553-6 | 820-5 | 128-14 | «+--+. 791-4 126-35 | 548-9 | 732-2 12 136-19 | 536-7 | 801-2 129-87 | 546-8 | 824.4 558-3 | 789-0 122-97 | 549-5 | 733-5 18 136-23 | 534-6 | 798-0 129-70 | 546-4 | 825-2 555-6 | 783-1 121-56 | 547-3 | 734-9 24 136-22 | 535-1 799-5 129-76 | 547-3 | 826-7 554-9 | 777-7 122-85 | 548-1 | 731-5 30 136-05 | 536-8 | 802-3 129-78 | 549-2 | 824-3 555-9 | 774-2 124-43 | 544-7 | 730-0 36 135-92 | 534-8 | 798-7 129-52 | 548-6 | 824-3 550-1 | 772-8 122-53 | 537-4 | 731-3 42 136-06 | 540-7 | 795-8 129-49 | 549-5 | 824.3 556-2 | 771-1 125-88 | 540-9 | 729.2 48 135-85 | 540-2 | 798-6 129-35 | 550-0 | 824-9 552-8 | 769-8 127-01 | 538-1 | 720-1 54 135-40 | 536-3 | 800-7 129-40 | 549-1 824-9 553-6 | 769-7 127-35 | 531-8 | 718-8 3h, 7h, 112, 15%, 0 135-59 | 534-7 | 807-1 129-12 | 549-7 | 825-8 551-9 | 768-6 125-46 | 535-1 715-2 6 135-53 | 535-1 808-2 129-03 | 548-1 | 825-9 552-1 769-6 126-79 | 538-7 | 714-9 12 135-59 | 537-3 | 808-6 129-10 | 549-1 825-7 553-1 | 769-9 128-38 | 531-9 | 711-8 18 135-60 | 536-4 | 808-2 129-37 | 551-6 | 826-2 553-3 | 769-0 126-32 | 534-3 | 709-0 24 135-80 | 541-0 | 805-8 129-37 | 548-2 | 826-8 552-6 | 768-6 126-46 | 539-3 | 706-1 30 135-42 | 542-3 | 806-0 129-05 | 547-6 | 826-6 551-9 | 767-9 126-95 | 539-7 | 707-5 36 135-23 | 540-5 | 806-3 129-20 | 549-0 | 826-4 555-7 | 764-7 126-40 | 545-4 | 716-0 42 134-72 | 541-9 | 805-6 129-23 | 548-7 | 825-8 561-1 | 763-4 125-48 | 545-9 | 717-8 48 134-80 | 545-4 | 802-9 129-37 | 552-1 | 823-6 554-9 | 763-4 127-10 | 547-1 | 732-3 54 134-33 | 541-3 | 804-9 129-15 | 551-8 | 825-3 555-4 | 763-8 125-35 | 543-6 | 726-7 An, gh, 12%, 164, 0 134-85 | 545-1 | 801-7 | 129-52 | 550-4 | 826-2 | 124-65 | 552-0 | 765-0 | 128-43 | 536-3 | 731-8 6 133-75 | 544-9 | 801-5 | 129-43 | 550-5 | 826-4 | 124-46 | 556-9 | 761-9 | 126-10 | 537-8 | 731-9 12 133-18 | 545-4 | 805-1 129-35 | 551-1 | 825-3 123-77 | 556-4 | 764-7 122-04 | 540-2 | 732-3 18 133-00 | 542-3 | 806-2 129-03 | 551-5 | 825-1 124-62 | 557-9 | 761-9 122-97 | 535-6 | 746-4 24 133-08 | 546-8 | 805-6 129-07 | 551-8 | 826-1 125-23 | 560-3 | 761-1 124-85 | 527-6 | 746-8 30 133-37 | 547-1 805-3 129-62 | 549-8 | 826-6 125-35 | 561-9 | 759-0 124-93 | 524-2 | 746-0 36 132-20 | 540-4 | 809-0 129-65 | 547-6 | 825-6 126-55 | 560-2 | 758-4 124-80 | 545-6 | 744-2 42 132-20 | 542-1 809-4 129-50 | 550-0 | 823-5 126-26 | 565-6 | 755-1 123-65 | 532-9 | 739-5 48 131-75 | 540-0 | 811-4 129-62 | 552-1 | 818-5 128-50 | 568-5 | 751-5 124-39 | 530-0 | 739-0 54 131-82 | 542-2 | 811-4 129-58 | 549-8 | 822-7 130-80 | 569-7 | 754-5 122-77 | 534-7 | 748-3 5h, gh, 13}, 172 0 131-58 | 543-3 | 811-0 129-30 | 550-2 | §24-0 133-70 | 562-8 | 753-7 125-19 | 537-6 | 751-9 6 131-80 | 548-5 | 810-2 129-17 | 551-0 | 823-4 133-11 | 547-9 | 754-1 123-11 | 537-5 | 753-0 12 131-47 | 550-5 | 812-4 129-65 | 550-4 | 823-1 127-15 | 549-7 | 743-0 122-50 | 531-0 | 754-6 18 131-12 | 549-7 | 813-3 129-65 | 548-7 | 822-7 124-42 | 550-7 | 742-2 122-87 | 524-1 | 759-8 24 130-85 | 548-8 | 814-5 129-55 | 547-2 | 824-7 123-07 | 555-4 | 743-3 124-00 | 531-9 | 759-6 30 130-60 | 549-6 | 816-6 129-65 | 546-9 | 823-9 123-50 | 552-7 | 749-9 125-02 | 531-7 | 763-5 36 130-27 | 545-2 | 819-5 129-62 | 549-6 | 822-0 123-24 | 550-5 | 749-9 125-28 | 530-2 | 765-2 42 130-35 | 544-2 | 822-2 129-62 | 550-1 | 822-8 123-11 | 559-9 | 747-6 127-01 | 528-2 | 768-5 48 130-32 | 545-3 | 824.2 129-62 | 551-3 | 824.4 125-59 | 560-9 | 747-6 128-30 | 522-7 | 772-9 54 130-35 | 546-6 | 825-5 129-83 | 550-0 | 829-4 127-60 | 556-5 | 741-6 129-34 | 516-2 | 775-4 Hour, b 2 | 3 | 4 | By ith ep vey giibae | 37 BIFILAR THERMOMETER, | 61:3 | 62-2 | 627 | 63-0 | 635 | 637 | 637 | 62-9 | 62-0 2|64-4 | 64-2 | 63-6 | 63-0 | 61-6 | 61-0 | 602 | 59-4 BALANCE THERMOMETER, | 60°5 | 61:4 | 62:0 | 62°3 June 224 934, 1842. affecting the motion of the pendulum. 62:7 | 62:7 | 62:8 | 62-2 | 61-7 2]65-2 put fast 2s; 234 2h, error —55, clock put fast 28, and 30* bell stopped. 64:2 63°7 | 62:7 | 62:2 | 61:7 | 60°7 | 59°7 The clock in the Magnetic Observatory was not going well during this term, owing to the lever of the 305 bell The following were the errors during the term: 224 94, error 0%; 234 04 30™, error —4§, clock The error of +28 continued throughout the rest of the term. Gottingen Mean Time TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. ei) JUNE 22, 23. of Declination || Dgcrina- Observation. TION. , BIFILAR THERMOMETER, Corrected. Brrivar | BALANCE Se. Div. 182, 518-2 521-3 525-9 521-6 516-9 521-0 520-6 522-9 59-0 | 58-9 | Corrected. Mie. Div. DEcLINA- BiriLaR | BALANCE DEcLINA- TION. Corrected. | Corrected. TION. BIFivar Corrected. BALANceE | DeEcLiINA- Corrected. | TION. BirinarR_ | BALANCE Corrected.| Corrected. t Se. Div. | Mic. Div. 809-0 806-5 802-0 802-7 799-7 798-5 797-6 795-4 795-6 792:3 58°6 | 58°7 59-7 | 60-9 62-1 | 63-2 | 64:7 Se. Div. Mic. Div. Se. Div. | Mic. Diy. 809-1 811-0 812-6 65-5 | 64-9 | 65-2 BALANCE THERMOMETEAR, | 59.5 | 59°2 | 59-2 | 59-2 | 60:0 | 60°7 | 61:7 | 62°7 | 65:0 June 224234, See note on page 38. 66:3 | 648 | 642 40 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. Gottingen JULY 20, 21. Mean pane fo) Declination DECLINA- Bir1,ar | BALANCE | DEcLINaA- Biriwar | BALANCE DEcLINA- BIFILAR BALANCE | DEcLINA- BIFILAR BALANCE Observation. TION. Corrected. | Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. Min. lu Se. Div. ' Mic. Div. M4 Se. Div. | Mic. Div. Z Se. Div. | Mic. Div. y Se. Div. | Mic. Div. 105, 14}, 18}, 29h, 0 116-77 | 536-7 | 814-4 125-35 | 540-0 | 751-2 123-07 | 531-3 | 800-6 123-22 | 527-4 | 796-4 6 117-57 | 536-4 | 813-0 124-99 | 541-4 | 752-3 122-55 | 530-0 | 799-8 123-97 | 528-1 796-7 12 118-52 | 538-3 | 813-9 125-62 | 540-8 | 753-4 122-04 | 530-1 798°5 123-87 | 526-7 | 795-0 18 120-20 | 538-3 | 809-7 125-63 | 539-8 | 753-9 122-04 | 530-8 | 798-7 123-77 | 526-2 | 793-3 94. 120-25 | 538-8 | 805-7 125-65 | 539-5 | 754-2 122-90 | 529-7 | 799-7 124:07 | 526-3 | 792-9 30 120-35 | 540-7 | 801-4 125-52 | 538-5 | 752-6 122-51 | 530-1 801-1 124-20 | 526-4 | 792-5 36 121-02 | 543-0 | 798-5 124-27 | 538-8 | 753-9 122-30 | 529-3 | 802-5 124-24 | 525-2 | 790-4 42 122-60 | 539-9 | 799-1 123-97 | 539-6 | 754-6 122-07 | 530-2 | 804-7 124-30 | 525-1 790-4 48 123-70 | 539-8 | 797-7 123-60 | 539-6 | 754-6 121-93 | 531-5 | 802-7 124-62 | 526-3 | 787-6 54 123-68 | 538-3 | 797-1 123-60 | 538-5 | 755-8 122-04 | 532-6 | 802-6 124-77 | 526-6 | 786-5 114, 15, 19h, 23h, 0 124-50 | 536-7 | 795-4 122-93 | 537-1 | 757-7 121-70 | 532-7 | 804-0 125-22 | 526-9 | 785-2 6 123-58 | 535-1 | 792-9 122.27 | 537-6 | 758-2 121-98 | 532-4 | 802-8 125-00 | 523-9 | 782-7 12 122-28 | 535-9 | 791-1 121-77 | 537-7 | 761-5 121-70 | 532-9 | 803-9 124-35 | 527-8 | 781-1 18 121-65 | 534-4 | 792-0 121-58 | 538-0 | 762-5 121-52 | 532-8 | 801-9 125-43 | 528-7 | 781-4 24 121-10 | 535-2 | 790-4 121-35 | 536-2 | 764-4 121-10 | 533-7 | 804-1 125-68 | 529-4 | 781-6 30 120-78 | 535-9 | 790-4 121-25 | 534-6 | 766-8 121-40 | 534-2 | 804-7 126-02 | 529-3 | 780-8 36 120-78 | 535-5 | 790-7 121-58 | 534-9 | 768-6 121-58 | 532-2 | 803-5 126-45 | 529-8 | 781-1 42 121-18 | 534-3 | 791-6 122-35 | 534-1 771-1 121-75 | 532-3 | 802-8 126-72 | 529-7 | 781-3 48 121-77 | 535-1 791-7 122-78 | 534-0 | 771-1 121-70 | 532-1 802-1 126-85 | 531-5 | 780-6 54 122-10 | 535-8 | 790-1 123-08 | 534-7 | 773-7 121-12 | 532-6 | 803-6 127-28 | 534-7 | 780-2 125, 164, 20%, 04, (0) 122-60 | 534-8 | 792-9 123-60 535-5 | 774-9 120-93 | 530-8 | 802-9 127-92 | 534-6 | 782-3 6 122-38 | 535-1 790-8 123-84 535-5 | 774-6 120-80 | 530-0 | 804-7 128-74 | 532-8 | 784-4 12 122-87 | 534-4 | 791-6 123-98 535-1 7754 120-98 | 529-8 | 804-8 129-14 | 534-5 | 783-1 18 122-80 | 534-1 791-1 123-73 536-2 | 776-3 121-47 | 530-1 805-7 129-65 | 534-1 783-6 94 123-47 | 534-4 | 790-0 123-68 537-0 | 778-8 121-02 | 530-6 | 804-0 130-10 | 532-9 | 784-5 30 124-48 | 538-6 | 787-7 124-53 533-7 | 779-4 121-71 | 526-9 | 804-7 130-33 | 533-2 | 784-5 36 127-74 | 543-7 | 781-3 124-37 538-5 | 784-1 119-78 | 530-8 | 803-3 130-75 | 533-6 | 785-0 42 129-69 | 545-3 | 772-9 | 124-77 535-5 | 784-5 | 120-35 | 531-4 | 803-6 | 131-45 | 533-9 | 786-8 48 || 129-07 | 545-0 | 765-6 | 124.27 535-5 | 787-0 | 121-05 | 530-3 | 803-7 | 131-63 | 534-0 | 786-8 54 128-07 | 544-7 | 760-0 | 124-18 536-0 | 789-6 | 121-30 | 529-0 | 804-4 | 132-11 | 532-9 | 787-5 13h, 174, 214, 14, 0 127-94 | 543-2 | 755-4 124-00 | 532-8 | 791-7 121-12 | 528-5 | 802-6 132-18 | 531-9 | 788-2 6 127-85 | 541-7 | 752-0 123-51 | 534-4 | 792-1 121-00 | 528-5 | 801-5 131-92 | 533-8 | 787-7 12 127-48 | 539-7 | 750-2 123-42 | 534.2 | 792-3 121-43 | 528-0 | 801-0 131-96 | 535-4 | 788-3 18 127-23 | 538-3 | 750-3 123-22 | 533-8 | 795-9 121-49 | 528-6 | 800-4 132-28 | 533-4 | 790-3 24 126-22 | 538-9 | 748-3 123-40 | 532-4 | 797-9 121-84 | 528-7 | 799-5 132-11 | 532-6 | 790-8 30 125-62 | 539-3 | 747-1 123-73 | 532-1 802-0 122-25 | 528-7 | 799-0 132-42 | 534-8 | 790-7 36 125-12 | 540-8 | 746-4 124-40 | 531-3 | 800-3 122-84 | 528-4 | 799-0 132-65 | 538-2 | 790-6 42 124-88 | 541-1 748-7 123-80 | 532-7 | 800-6 122-91 | 527-6 | 797-4 132-87 | 538-9 | 792-4 48 124-95 | 540-3 | 751-0 123-42 | 531-4 | 799-9 122-98 | 528-0 | 796-7 132-65 | 539-0 | 793-8 54 125-23 | 540-5 | 751-2 123-42 | 530-9 | 799-3 123-38 | 526-8 | 795-8 132-35 | 540-5 | 794-1 Hope ai Ah te sk | | 2 13 || ae | eae) ae is | 19 20 | 21 22 | 23] 0 | 4 Brean Turxmomren, . | 682 | 58-4 | 581] 586 | 589 | 591 | 59-0 | 59.0 | 58-9 | 595 | 594 | 59-4 | 598 | 60:6 | 616 | 624 BALANCE TuerMomerer, . | 58-2 | 58.3 | 58-7 | 58-7 | 58-7 | 58°7 | 58:7 | 58-7 | 587 | 59:0 | 59:2 | 59°3 | 59-4 | 60-1 | 60°8 | 61-7 Gottingen Mean Time of Declination ‘Observation. Hour, TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. JuLy 20 , 21. DECLINA- TION. c BIFILAR Corrected. BALANCE Corrected. Se. Div. pn 539-2 533°8 533-4 533-0 532-7 535-6 536-4 535-7 _ 534-8 537-6 540-3 541-0 544-5 550-8 546-0 543:°8 541-2 BALANCE THERMOMETER, MAG. OBS. VOL. I. Mic. Div. DECLINA- TION. c 788-9 126-32 789-4 126-08 788-3 126-12 788-7 125-82 788-9 125-55 789-4 125-59 792-6 125-70 795-4 125-80 BIFILAR jCorrected. 6 Se. Div. 7 62:3 | 62-7 62:9 | 63:1 | 62°9 | 63-2 | 63:2 BALANCE Corrected. . Mic. Div. 8 BiIFILAR THERMOMETER, | 63°2 | 63°5 | 63:6 | 63°7 | 63:7 | 63°7 | 63-7 AvuaGust 26, 27. 41 DEcLINA- TION. 104. 551-8 548-5 551-1 553°3 546-4 543-5 544-7 544-7 541-3 540-5 or: 542-8 543-9 545-4 549-4 551-6 552-2 548-6 544-2 541-7 543-1 1 546-8 548-7 549-4 61:8 | 60-6 | 60-8 | 61-1 | 61-6 | 61-7 | 61:5 | 61-5 | 61-4 | 614 BIFILAR Corrected. Se. Div. BALANCE Corrected. Mice. Div. BIFILAR Corrected. Se. Div. BALANCE Corrected. Mice, Div. 61-9 | 60-9 61:0 | 61:2 | 61:7 | 61:7 617 | 618 61°7 | 61:7 42 Gottingen Mean Time of Declination Observation. Min. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. BIFILAR Corrected. Se. Div, 18h, 537-1 536-5 535°6 534-4 534-7 539:0 534-1 534-0 532:2 530-9 BALANCE Corrected. Mic. Div. DECLINA- TION. , 122-22 123-53 123-42 122-95 123-48 123-40 123-91 124-15 124-57 124-62 Auveust 26, 27. BALANCE Mic. Div. v 2 DECLINA- Corrected. TION. BIFiLaR DEcLINA- BIFILaR Corrected. | Corrected. Corrected.| Corrected. Se. Diy. | Mic. Div. Sc. Div. Mice. Div. 3 BALANCE 6", gh, 548-1 547-7 549-9 548-7 546-3 553°3 553-4 504-2 552-6 550-7 554-4 549-2 555-8 BALANCE 759-9 756-2 753-2 752-7 751-7 747-9 745-2 742-5 743-7 743-8 fed 6 [7 | 3 | ooh BIFILAR THERMOMETER, | 61-1 | 60-7 | 60:5 | 60-4 | 60-7 | 60-8 | 62:7 | 63:3 | 64-4 | 65:2 | 66-0 | 66-7 | 67-4 | 64:9 | 64-0 | 64-2 | 64:3 BALANCE THERMOMETER, 61-7 | 61:1 | 60:7 | 60°5 | 60:8 | 60:9 | 62°5 | 632°] 63:9 | 64:5 | 65°3 65°8 | 66:3 | 64:5 | 63-7 | 64-1 | 64-2 Gottingen Mean Time of Declination Observation. DE&cLINA- TION. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. BIriLaR Corrected. Se. Div. BALANCE Corrected. Mice. Div. DECLINA- TION. , BIFILAR Corrected. SEPTEMBER 21, 22. BALANCE Corrected, Se. Div. 144, 530-6 534-3 537-6 536-6 534-9 537-0 538-5 536-8 535-5 534:5 Mic. Div. DEcLINA- TION. , 129-92 129-95 130-42 131-05 131-12 131-35 131-05 130-85 130-69 130-52 BIFILAR Corrected. BALANCE Corrected, DECLINA- TION. Se. Div. 18, 537-6 538-2 540-0 540-1 539-5 540-1 540-9 540-0 539-9 539-4 Mie. Div. 127-17 131-18 136-40 138-27 137-70 136-40 134-68 132-25 130-47 129-65 fas 535-6 537-0 537-8 537-7 537-5 537-0 537-7 538-8 540-4 540-9 16%. 542:5 542-7 541-6 543-6 541-9 541-5 542-5 544.2 542-8 544-7 545-6 645:5 546-8 547-3 542-5 541-8 541-7 538-2 538-9 130-15 130-42 130-70 130-83 130-78 131-05 130-45 130-78 130-52 130-98 130-15 131-02 131-78 132-17 132-84 133-50 134-33 134-40 134-58 134-25 133-70 133-50 132-97 132-88 132-60 132-28 133-37 134-60 134-37 192, 538-6 539-7 538-9 537-8 536-6 537-4 536-7 536-8 535-4 535-1 208 534:3 534-9 535°3 539°3 333°8 530-6 528-4 528-1 528-0 527-5 BIFILAR Corrected. 45 BALANCE Corrected. Se. Diy. 22 521-7 519-9 522-6 520-9 019-2 519-3 520.4 522-7 523-4 522-2 2am 528-2 528-4 532-8 530-9 530-5 57-8 | 57-6 | 57-1 | 56-8 | 58-1 | 58:2 57-9 | 57-9 | 59-2 44 E Gottingen SEPTEMBER 21, 22. f Mean pame t Declination DecrinA- | Birman | BaLance | Decwina- Observation. TION. Corrected. | Corrected. TION. Min. zi Se. Div. | Mic. Div. U4 gh, 0 140-23 | 548-2 | 754-4 133-07 ; 6 140-65 | 544-0 | 758-2 133-64 i 12 139-47 | 542-4 761-7 132-71 | ads 139-42 | 540-4 | 762-3 | 132-05 24 138-12 | 540-1 768-2 132-50 t 30 137-37 | 540-6 766-5 133-50 36 135-99 | 543-9 766-8 134-33 42 136-13 | 545-4 | 768-1 134-47 48 135-82 | 547-2 | 767-9 134-57 54 136-30 | 552-8 | 768-6 134-95 3h, ' 0 137-02 | 552-3 769-5 133-50 6 137-72 | 554-4 771-0 132-50 12 137-70 | 556-6 774:0 132-90 18 136-93 | 546-8 776-1 131-78 24. 136-79 | 547-4 775-2 124-55 30 136-52 | 546-8 775:3 111-10 36 136-59 | 550-9 | 773-4 115-68 42 137-34 | 553-6 | 775-3 123-27 48 136-83 | 550-2 | 777-4 132-70 54 136-77 | 553-9 | 778-7 134-65 4h, 0 136-95 | 549-4 780-4 131-33 6 136-46 | 547-5 782-0 127-58 1) 136-42 | 552-4 782-0 128-38 18 136-15 | 549-0 782-6 126-35 24 135-68 | 546-4 783-0 127-77 30 135-53 | 544-7 780-5 129-56 36 135-62 | 551-1 779-7 129-69 42 135-48 | 552-6 784-8 128-75 48 134-60 | 545-8 782-8 128-65 54 134-58 | 544-6 | 786-6 129-08 | Brritar THERMOMETER, | 62:5 62:5 | 61:9 | 61-4 | BIFmLaR Corrected. Se. Diy. BaLANcE Corrected. Mie. Div. DEcLINA- TION. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. OctoseER 19, 20. BiriLaAR | BALANcE | DEcLINA- BrritaR | BALANCE Corrected. | Corrected. TION. Corrected. | Corrected. Se. Div. | Mic. Div. $ Se. Div. | Mic. Div. 102. 14h, 573-1 | 771-7 130-42 | 540-1 | 712-3 572-4 | 748-8 129-82 | 542-3 | 715-1 554-7 | 738-5 129-34 | 542-7 | 717-5 539-0 | 738-3 128-90 | 543-6 | 719-4 534-9 | 740-8 128-28 | 544-0 | 719-8 536-9 | 741-2 127-90 | 542-6 | 721-8 544-2 | 743-8 128-63 | 541-1 | 723-2 547-5 | 744-7 128-88 | 541-8 | 724.2 554-0 | 743-8 129-12 | 541-0 | 725-4 554-7 | 745-8 129-34 | 540-8 | 725-9 114, 154, 549-2 | 751-4 129-35 | 540-8 | 726-6 543-1 754-9 128-54 | 542-8 | 725-5 542-8 | 755-2 128-85 | 541-2 | 726-5 543-1 756-6 128-45 | 540-3 | 728-0 541-4 | 756-1 128-61 | 541-7 | 729-7 539-0 | 756-4 128-94 | 540-3 | 730-7 539-2 | 756-3 128-47 | 541-2 | 731-6 540-7 | 754-4 | 128-60 | 541-3 | 731-9 541-4 | 753-0 | 128-45 | 541-6 | 732-7 541-8 | 752-2 | 128-14 | 541-3 | 733-6 12h. 164, 542-1 750-5 127-57 | 541-2 | 734-9 541-2 | 750-5 126-90 | 540-5 | 736-3 540-5 | 746-5 126-66 | 539-7 | 738-2 538-9 | 748-3 126-48 | 538-9 | 739-9 538-1 | 747-1 126-06 | 538-3 | 742-2 537-5 | 747-7 126-06 | 537-7 | 746-0 538:0 | 747-1 126-59 | 538-9 | 748-7 542-2 | 746-5 127-63 | 539-6 | 749-3 543-2 | 743-0 127-54 | 639-1 | 750-0 543-1 736-5 127-60 | 538-5 | 749-4 13}, 17%. 543-4 | 733-0 | 126-97 | 537-7 | 750-1 545-0 | 730-2 126-98 | 537-9 | 750-9 550-4 | 721-1 127-60 | 539-1 749-4 548-8 | 714-2 127-63 | 539-3 | 749-3 546-3 | 705-3 127-68 | 539-1 | 748-3 545-5 | 698-9 127-68 | 539-3 | 749-6 543-4 | 695-7 127-80 | 539-6 | 750-7 540-9 | 695-5 127-65 | 539-6 | 750-4 540-5 | 697-5 128-14 | 540-3 | 752-5 540-1 | 706-7 128-00 | 538-6 | 752-4 60-6 | 59:3 | 59-0 | 58-6 | 5831466 | 48°5 | 50-6 | 51:9 | Batance TueRMoMETER, | 62:5 | 63:2 | 62:9 | 62°7 | 61-7 | 60:4 | 60-4 | 59:9 | 59:3]49-1 16 |) ia haa 13 | 14 15 52:3 | 51:8 | 50-6 | 49:8 “49:9 | 52:0 | 53:4 | 53:8 | 53:3 | 52:2 | 51:8 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 45 Gottingen OcToBER 19, 20. Mean sane ° ; Declination || Dgcrina- | Buritar | BaLance | Dectina- Biri,arR | BALANCE | DeEcLINA- Bremar | BAaLance | DEctina- BrritarR | BALANCE Observation. TION. Corrected.| Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. Min. ¢ Se. Div. © Mic. Div. f Se. Div. | Mic. Div. ¢ Se. Div. Mice. Div. U Sc. Di Mic. Div. | 18h, 22h. Qh, 6h, 0 127-95 | 538-4 | 750-0 126-43 | 533-8 | 770-9 135-86 | 545-7 | 760-2 129-60 | 545-7 | 765-6 6 126-60 | 541-4 | 753-5 127-32 | 532.9 | 770-4 136-28 | 544-1 | 763-9 129-69 | 544:0 | 763-2 12 127-63 | 538-7 | 753-3 127-08 | 534-7 | 767-6 137-41 | 546-1 763-5 129-41 | 547-5 | 760-3 18 128-03 | 537-8 | 760-2 128-47 | 535-3 | 763-8 137-37 |-544-9 | 763-0 130-07 | 549-4 | 763-5 24. 128-14 | 536-8 | 759-9 129-87 | 532-3 | 763-7 136-62 | 544-6 | 760-5 130-09 | 549-0 | 765-3 30 127-18 | 539-6 | 761-0 128-88 | 532-6 | 761-0 136-43 | 544-6 | 760-1 130-07 |.550-3 | 763-2 36 127-17 | 538-5 | 760-6 130-15 | 529-5 | 761-0 136-35 | 545-0 | 758-9 130-32 | 547-4 | 756-7 42 127-07 | 541-0 | 763-5 130-40 | 528-7 | 759-2 136-22 | 544-8 | 758-9 130-36 | 547-4 | 751-1 48 128-25 | 538-7 | 763-7 130-38 | 526-1 | 760-8 136-22 | 545-5 | 757.7 129-83 | 548-1 | 749-6 54 127-83 | 539-3 | 765-1 130-42 | 527-9 | 757-1 136-22 | 547-7 | 759-5 130-13 | 549-5 | 747-4 19h, 23h, 3h, 72, 0 127-98 | 538-5 | 763-7 131-22 | 529-4 | 755-7 136-10 | 548-6 | 758-1 130-40 | 546-2 | 747-7 6 127-30 | 536-8 | 764-8 131-65 | 528-5 | 755-6 135-90 | 549-1 757-9 130-02 | 543-4 | 751-8 12 127-12 | 536-8 | 761-0 131-65 | 527-3 | 754-7 135-72 | 548-9 | ...-.. 126-22 | 536-5 | 752-4 18 127-70 | 535-1 | 763-1 131-65 | 529-9 | 753-4 135-68 | 548-5 | 759-9 122-58 | 545-0 | 753-4 24 127-80 | 533-8 | 765-3 131-98 | 529-2 | 753-6 135-60 | 550-4 | 760-0 123-40 | 546-2 | 759-7 30 127-40 | 533-7 | 765-9 132-37 | 528-8 | 753-1 135-39 | 548-4 | 759-3 123-91 | 547-8 | 761-3 36 127-47 | 532-5 | 767-7 132-90 | 529-4 | 753-1 134.47 | 546-8 | 759-7 124-92 | 547-6 | 759-2 42 126-79 | 532-6 | 768-0 133-42 | 530-2 | 752-3 134-28 | 547-9 | 760-3 126-03 | 546-3 | 755-8 48 126-68 | 534-1 771-6 133-67 | 531-6 | 749-7 133-84 | 547-0 | 761-0 127-47 | 545-0 | 750-9 54 126-25 | 535-6 | 773-5 134-28 | 530-1 | 752-5 133-57 | 547-3 | 761-6 127-14 | 545-7 | 748-6 202, 04, 4h, gh, 0 126-15 | 536-4 | 775-6 134-99 | 531-8 | 755-1 133-20 | 547-6 | 765-3 128-30 | 545-4 | 749-1 6 126-13 | 536-5 | 775-3 135-43 | 532-9 | 754-8 133-08 | 548-7 | 766-3 128-07 | 543-1 | 747-2 12 126-35 | 536-7 | 776-6 136-15 | 536-0 | 755-5 133-00 | 548-9 | 766-1 127-95 | 545-0 | 744-2 18 125-83 | 536-5 | 775-8 137-02 | 536-0 | 756-3 132-93 | 548-3 | 769-6 127-83 | 541-2 | 744.4 24 124-97 | 537-4 | 776-9 136-13 | 531-7 | 758-4 132-31 | 547-7 | 766-0 126-57 | 544-5 | 743-3 30 124-62 | 536-7 | 778-8 136-10 | 530-5 | 760-3 132-10 | 548-4 | 762-6 126-94 | 549-9 | 743-5 36 124-63 | 536-4 | 778-9 136-28 | 528-1 762-2 131-63 | 548-6 | 761-9 127-05 | 547-5 | 750-1 42 124-72 | 537-0 | 781-8 136-88 | 529-3 | 763-4 131-55 | 549-7 | 760-2 127-55 | 543-2 | 753-8 48 125-08 | 536-5 | 782-4 137-03 | 528-8 | 763-0 131-49 | 550-0 | 761-9 127-01 | 540-6 | 757-5 54 124-72 | 537-7 | 781-8 136-43 | 530-1 | 759-7 131-47 | 550-8 | 763-1 126-97 | 539-9 | 756-9 21h, 14, 5h, gh, 0 124-73 | 537-5 | 780-3 135-10 | 533-9 | 757-4 130-98 | 550-7 | 763-3 125-75 | 540-3 | 759-3 6 124-57 | 536-8 | 780-3 135-30 | 535-6 | 757-5 130-98 | 550-4 | 764-4 124-99 | 541-0 | 764-5 12 125-10 | 537-6 | 776-5 135-25 | 538-5 | 755-9 130-58 | 547-9 | 764-8 125-50 | 542-3 | 764-1 18 125-02 | 537-3 | 776-9 135-55 | 539-0 | 756-4 130-25 | 548-7 | 763-9 126-28 | 541-4 | 761-1 24 125-20 | 537-3 | 775-3 135-62 | 539-4 | 756-3 130-32 | 552-2 | 765-0 126-63 | 541-4 | 758-9 30 125-00 | 535-9 | 774-3 135-73 | 539-6 | 756-4 130-35 | 552-1 766-7 126-92 | 540-5 | 758-5 36 125-19 | 536-5 | 771-4 135-68 | 541-0 | 756-1 130-60 | 551-3 | 766-9 126-95 | 541-4 | 759-5 42 125-10 | 535-9 | 771-7 135-82 | 542-5 | 756-1 130-78 | 547-9 | 767-5 127-12 | 543-7 | 756-8 48 125-52 | 536-3 | 769-8 135-73 | 544-5 | 757-8 130-58 | 544-6 | 767-2 126-46 | 546-5 | 754-3 54 126-33 | 536-0 | 770-9 136-13 | 545-6 | 759-2 129-96 | 546-9 | 766-9 126-40 546-8 | 760-2 \ Hoon, ...... | 18| 19 | 20 21 | 22] 23] 0 | 1 2| 3 4] s|o6]7) 8 9 | 20 BIFILAR THERMOMETER, | 488 | 48:8 | 49-1 | 49:8 | 508 | 50°7 | 50:9 | 52-6 | 53-0 | 54-4 | 547 | 54-9 | 54-9 | 55:2 | 54-6 | B41 | 549 ee aE ee eee | BALANCE THERMOMETER, | 50:9 | 51-6 | 51:6 | 52:6 | 53:5 | 52:6 | 526 | 53-9 | 54-2 | 55-5 | 55°7 | 56-2 | 56-9 | 57-1 | 57-5 | 58-2 | 55-9 SSS SN SA AS ESSE tS SG i SP SA TS EOE SE I ST IIIS I SE I EI A IT OC I LS SOE SEI, LES ED, MAG. OBS. VOL. I. M 46 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. Gottingen NoveEMBER 25, 26. Mean ‘Time Declination DecLina- BieizaR | Banance | Decuma- Bririzar | Bavance | Decrina- Brrizarn | BAvance Drciina- E1ritar | BALance Observation, TION. Corrected.| Corrected. TION. Correcied.| Corrected. TION. Corrected.| Corrected. TION. Corrected.| Corrected. Min. 4 Se. Div. | Mic. Div. 4 Sc. Div. | Mic. Div. i Se. Div. | Mic. Div. af Sc. Div. | Mic. Diy. 104 14h 18}, gah, 0 126-22 | 549-9 | 737-1 127-50 | 547-4 | 710-1 126-62 | 546-3 | 708-9 128-83 | 542-7 | 721-9 6 126-50 | 550-7 | 733-8 127-50 | 547-2 | 709-9 127-05 | 545-4 | 709-2 128-68 | 542-6 | 724-0 12 127-00 | 550-7 | 729-4 127-54 | 546-2 | 710-2 127-14 | 545-5 | 708-9 129-01 | 537-0 | 724-0 18 127-48 | 548-8 | 726-9 127-50 | 546-2 | 709-2 127-27 | 545-8 | 710-8 129-08 | 542-1 | 724-1 24 127-28 | 547-5 | 724-7 127-48 | 546-0 | 708-6 127-23 | 546-1 711-6 129-07 | 541-9 | 723-6 30 127-25 | 547-8 | 722-2 127-38 | 545-5 | 708-8 127-34 | 546-4 | 710-8 129-23 542-4 | 723.9 36 127-63 | 548-6 | 721-4 127-43 | 545-8 | 708-7 127-52 | 547-0 | 710-3 129-65 | 543-3 | 722-1 42 127-72 | 549-0 | 720-1 127-50 | 546-2 | 709-2 127-50 | 546-5 | 710-2 129-73 | 543-5 | 722.4 48 127-57 | 548-3 | 718-5 127-45 | 546-2 | 710-1 127-32 | 546-9 | 711-4 129-75 | 544-1 721-2 54 127-43 | 548-4 | 717-2 127-61 | 546-2 | 711-7 127-32 | 546-0 | 712-8 130-00 | 545-0 | 722-0 114 154, 19}, 23h, 0 127-50 | 548-9 | 716-2 128-00 | 546-3 | 716-3 127-28 ; 546-0 | 705-1 129-90 | 543-6 | 722-2 6 127-50 | 549-0 | 714-0 129 43 | 546-3 | 718-9 127-21 | 546-8 | 705-7 129-69 | 544-2 | 721-4 12 127-38 | 548-8 | 714-0 129-53 | 546-7 | 719-7 127-08 | 547-7 | 705-8 129-34 | 544-0 | 720-6 18 127-23 | 548-8 | 713-0 129-47 | 547-3 | 718-8 127-47 | 547-2 | 705-0 129-32 544-0 | 720-4 24 127-07 | 549-0 | 712-9 129-12 | 548-6 | 716-6 127-08 | 548-6 | 712-7 129-15 | 544-1 | 720-6 30 127-23 | 548-4 | 713-4 128-85 | 550-4 | 715-1 127-50 | 548-1 712-4 129-14 | 544-5 | 721-1 36 127-50 | 548-3 | 712-7 128-41 | 551-7 | 712-0 127-18 | 548-9 | 712-0 129-32 | 544-6 | 720-8 42 127-50 | 547-8 | 712-4 127-81 | 552-2 | 710-0 127-27 | 548-3 | 712-4 129-58 | 545-1 | 721-0 48 127-37 | 547-8 | 712-6 127-48 | 551-2 | 708-2 127-54 | 546-4 | 713-2 129-83 | 545-1 | 720-9 54 127-50 | 547-8 | 711-9 127-32 | 550-5 | 708-6 127-74 | 547-9 | 712-4 130-13 | 545-1 721-5 12, 16 204, ob, 0 127-40 | 547-5 | 711-2 127-48 | 549-7 | 705-4 127-57 | 548-4 | 713-3 130-25 | 545-3 | 722-3 6 127-50 | 547-9 | 710-9 127-47 | 549-7 | 704-0 127-70 | 548-8 | 716-4 130-73 | 5460 | 721-4 a2 127-57 | 547-9 | 709-4 127-61 | 549-6 | 702-6 127-70 | 549-2 | 719-3 130-83 | 546-0- | 718-7 18 127-50 | 547-9 | 709-3 127-74 | 549-0 | 700-6 127-70 | 548-6 | 718-9 131-18 | 545-9 | 719-5 24 127-60 | 547-6 | 710-6 148-14 | 549-0 | 699-5 127-77 | 550-4 | 717-8 130-95 | 544-8 | 720-3 30 127-50 | 547-6 | 711-1 128-28 | 549-3 | 697-9 127-74 | 550-5 | 716-0 130-87 | 544-9 | 719-9 36 | 127-50 | 547-6 | 710-9 127-67 | 549-3 | 696-4 127-98 | 550-0 | 713-0 130-70 | 545-2 | 720-3 42 127-40 | 547-3 | 711-5 127-05 | 550-0 | 694.5 127-97 | 549-0 | 711-4 130-98 | 545-7 | 719-5 48 127-50 | 547-8 | 711-2 126-45 | 549-7 | 694.3 128-23 | 549-6 | 710-7 131-10 | 544-7 | 721-8 54 127-21 | 547-9 | 712-1 126-25 | 549-4 | 694.9 128-12 | 550-5 | 711-8 131-00 | 545-0 | 722-3 13%, 174 21), 14, 0 127-50 | 547-7 | 713-1 126-23 | 549-1 | 695-3 128-17 | 549-8 | 711-2 151.05 | 544-5 | 720-9 6 127-50 | 547-0 | 712-1 126-52 | 548-5 | 696-2 128-23 | 549-1 711-0 130-98 | 545-8 | 722-9 12 127-50 | 546-9 | 711-7 126-32 | 547-7 | 697-1 128-28 | 548-3 | 711-5 131-60 | 548-3 | 724-5 18. || 127-50 | 547-1 | 711-8 126-65 | 547-5 | 697-8 128-52 | 548-0 | 715-3 130-95 | 546-7 | 723-5 24. 127-50 |.546-6 | 711-7 126-79 | 547-2 | 698-8 128-45 | 546-3 | 716-3 131-69 | 546-4 | 727-3 30 127-50 | 546-6 | 712-0 126-92 | 547-0 | 700-7 128-41 | 545-7 | 717-1 131-25 | 545-4 | 727-1 36 127-50 | 546-5 | 712-0 127-00 | 546-7 | 703-0 128-38 | 545-1 719-3 131-62 | 546-5 | 729-0 42 127-58 | 547-2 | 710-9 127-08 | 546-2 | 705-5 128.57 | 543-3 | 719-4 131-70 | 546-6 | 727-5 48 127-52 | 546-8 | 711-1 127-08 | 546-0 | 707-0 128-68 | 542-3 | 720-7 131-65 | 545-5 | 727-5 54 127-50 | 547-2 | 710-0 126-97 | 546-1 | 707-2 128-45 | 543-0 | 722-4 131-09 | 544-6 | 728-1 Hour, . &).) 2. om. | hao | a) peae! eae) |p 1d [pa 16 | 17 | 18 | 19 | 20] 21 | 22] 23| 0 | 2 Biritar THERMOMETER, . | 530 | 55-4 | 56-0 | 56-2 | 561 56-0 |- 579 | 57-4 | 56-4 | 558 | 568 | 58:3 | 57-8 | 57-5 | 57-1 | 569 BaLaNcE THERMOMETER, . 55°8 | 56:2 | 56-4 | 56:6 59-0 | 58-4 | 57°83 | 57-1 | 57-9 | 60-0 59°7 | 59-2 | 59-0 | 69-1 TrERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. 47 NoveMBER 25, 26. DeEcEMBER 20, 21. Gottingen cleat ime Oeclination | Dectawa: Min. i 0 131-23 6 131-12 12 131-07 18 131-32 24 131-18 30 130-98 36 130-98 42 130-98 48 131-16 54 131-12 0 131-00 6 130-98 12 130-98 18 130-98 24 130-98 30 130-82 36 130-85 42 130-83 48 130-35 54. 130-35 0 130-49 6 130-49 12 130-36 18 129-92 24. 129-49 30 129-58 36 129-28 42 129-17 48 129-14 54 129-35 0 128-90 6 129-17 12 128-58 18 127-68 24. 126-98 30 126-68 36 126-80 42 127-43 48 127-45 54. 127-88 Hour, BiriLaR Sc. Div. os 546-5 546-2 547-0 547-9 547-0 547-7 547-9 549-4 590-1 549-7 3 549-9 549-7 590-2 550-4 090-5 549-3 550-2 550-4 550-7 548-3 4h, 549-8 550-3 550-1 550-1 550-8 550-7 550-6 551-2 951-3 901-5 5. 549-5 548-0 546-1 546-4 547-3 548-7 550-4 550-2 552-5 552-8 BALANCE Corrected. | Corrected. BIFILAR THERMOMETER, | 56'9 °| 57:9 BALANCE THERMOMETER, DECLINA- BIFILAR BALANCE 59°8 | 59°8 | 59-5 | 58:6 | 58-4]606 | 618 | 627 | 62:7 | 62:6 | 62-2 | 61-4 | 60-7 DEcLINA- TION. BIFILAR Batance | Decrina- Brrinar | BaLANce Corrected. | Corrected. TION. Correcied. | Corrected. Se. Div. | Mic. Div. f Sc. Div. | Mic. Div. 104. 144, 548-5 705-3 125-42 | 548-1 | 680-2 548-4 | 703-9 125-28 | 547-7 | 680-1 549-3 | 701-3 125-02 | 547-1 | 678-5 548:0 | 700-4 125-40 | 546-8 | 680-1 548-0 | 697-7 125-63 | 547-2 | 678-6 548-4: | 696°5 126-15 | 546-8 | 680-5 547-4 | 693-7 126-77 | 546-9 | 680-1 548-2 | 693-0 127-54 | 546-0 | 680-5 548-0 | 690-5 | 127-63 | 546-5 | 679-4 549-1 | 688-6 | 126-98 | 547-1 | 677-7 114, 154, 549-7 | 687-5 126-28 | 548-0 | 678-2 549-2 | 685-7 126-05 | 548-0 | 678-4 550-0 | 685-5 125-95 | 547-0 680-0 548-9 | 683-6 125.68 | 546-2 | 679-2 548-4 | 682-4 125-50 | 546-0 679-4 549-4 | 681-9 125-02 | 545-6 | 678-9 549-1 | 680-8 124-79 | 546-2 | 679-3 548-7 | 681-1 124-52 | 546-4 | 680-6 549-5 | 681-8 124-73 | 545-9 | 681-0 548-3 | 680-8 124-45 | 547-0 | 681-3 12h, 162, 548-9 | 681-0 124-68 | 547-4 | 681-1 549-3 | 679-9 125-02 | 548-3 | 682-1 550-6 | 679-7 125-02 | 546-8 | 681-6 552-4 | 677-9 124-83 | 546-7 | 682-7 . 552-5 | 676-3 125-20 | 547-0 | 683-9 550-2 | 675-9 125-82 | 547-3 | 686-4 549-3 | 676-0 126-22 | 549-3 | 685-4 548-7 | 677-6 126-57 | 547-5 | 684-7 548-5 | 677-6 | 127-03 | 547-3 | 684-1 548-5 | 677-6 127-00 | 547-6 | 682-8 134, 174, 548-4 | 677-6 126-90 | 547-9 | 679-8 548-4 | 677-7 126-59 | 547-6 | 678-6 548-3 | 679-5 126-15 | 547-3 | 676-0 549-0 | 679-0 126-48 | 546-8 675-3 549-6 | 676-1 126-62 | 547-0 | 674-4 550-1 677-6 126-28 | 547-1 | 675-1 548-7 | 678-8 126-08 | 547-4 | 675-6 549-1 | 678-0 126-32 | 547-0 | 673-4 548-4 | 678-3 126-66 | 546-9 | 676-9 546-9 | 679-5 126-42 | 547-1 | 677-3 |u| 12 13 | 14 | 15 | 16 | w TION. Corrvected.| Corrected. Mic. Div. Ls Se. Div. | Mic. Diy. 6, 730-0 | 128-28 , 552-4 | 716-6 731-0 | 128-25 | 552-5 | 715-8 732-1 | 128-35 | 551-7 | 717-6 731-6 | 128-45 | 551-1 | 717-6 731-5 | 123-28 | 551-5 | 716-8 799-4 | 128-34 | 551-2 | 716-1 729-4 | 198-27 | 551-1 | 716-2 728-9 | 128-05 | 550-9 | 716-2 798.4 | 127-90 | 550-4 | 716-4 727.8 | 127-58 | 551-4 | 716-1 7h, 727-0 127-78 |} 550-7 | 715-5 727-3 | 198-27 | 550-6 | 715-8 727-4 | 198-12 | 549-3 | 715-2 727-7 | 128-17 | 549-2 | 714-2 727-5 | 128-18 | 549-1 | 713-9 727-0 | 127-95 | 549-3 | 714-9 725-9 | 128-01 | 549-0 715-2 724-7 | 198-27 | 548-5 . 714-9 794.0 | 127-98 | 548-3 | 713-9 723-8 | 127-65 | 548-3 | 713-7 gh, 721-1 | 127-54 | 548-4 | 712-9 720-4 | 127-10 | 548-4 , 712-2 720-3 | 127-07 | 548-3 | 712-8 721-9 | 127-50 | 547-4 | 712-0 791-8 | 127-28 | 547-7 | 712-3 721-7 | 127-17 | 546-5 | 711-6 721-8 | 126-40 | 546-6 | 711-5 719-2 | 126-39 | 548-2 | 711-1 721-0 | 126-90 | 547-1 | 712-6 719-3 | 127-41 | 546-1 | 712.9 gh, 719-7 | 127-23 | 545-9 | 713-7 719-2 | 127-12 | 547-0 | 716-3 720:8 | 126-90 | 5463 716-8 720-3 | 126-82 546-1 718-0 729-6 | 126-82 546-7 718-8 729.0 | 126-82 | 546-8 720.2 719-7 | 126-79 | 546-7 , 719-2 719-0 | 126-90 | 546-5 | 719-8 718-1 | 127-03 | 546-0 | 720-1 716-4 | 127-27 | 545-8 | 719-7 2] 3 a et 6 | 71 8 | 9 | 10 ne 61-2) | 61-3 61-7 | 61-5 | 612 | 60-6 | 59°7| 62-2 | 63-5 | 64-2 | 64-2 | 64-0 | 63-6 | 62:9 | 62-2 | 48 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1842. Gottingen DECEMBER 20, 21. Mean pune Declination Drcuina- Brrizar | BALANcE | Dectina- | Biriwar | BaLAnce | Dercrina- Observation. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Min. is Se. Div. ' Mic. Div. e Se. Div. | Mic. Div. f 18h, 22h, 0 126-19 | 547-8 | 675-5 129-98 | 551-5 | 672-4 129-03 6 125-93 | 548-3 | 675-6 129-63 | 550-1 670-7 128-97 12 125-80 | 548-4 | 675-9 129-34 | 549-7 | 663-9 128-74 18 125-70 | 549-3 | 676-4 129-52 | 548-9 | 664-2 128-37 24 125-50 | 548-8 | 678-5 129-41 | 548-6 | 662-6 128-18 30 125-57 | 549-4 | 684-7 129-63 | 547-6 | 671-6 128.10 36 126-10 | 549-4 | 689-1 129-53 | 548-0 | 672-4 127-78 42 126-13 | 549-2 | 691-9 129-27 | 546-7 | 673-0 127-77 48 126-05 | 550-3 | 692-3 129-37 | 547-2 | 673-3 127-63 54 125-86 | 551-4 | 690-7 129-34 | 547-7 | 673-4 127-52 195. 23h, 0 126-35 | 551-0 | 691-1 129-52 | 547-5 | 674-7 127-50 6 126-06 | 551-9 | 690-5 129-55 | 547-4 | 677-6 127-17 12 126-45 | 551-7 | 690-7 129-69 | 546-8 | 684-3 127-10 18 126-33 | 551-3 | 691-0 129-83 | 546-5 | 687-0 127-30 24 126-70 | 551-2 | 691-1 129-83 | 546-6 | 687-9 127-30 30 126-79 | 550-5 | 690-8 129-69 | 547-8 687-9 127-10 36 126-90 | 550-0 | 690-0 129-70 | 547-0 | 688-1 127-27 42 126-82 | 550-2 | 691-2 129-62 | 546-0 | 688-6 127-50 48 126-92 | 549-9 | 691-4 129-72 | 546-6 | 687-5 127-55 54 126-90 | 549-2 | 692-5 129-49 | 546-3 | 686-4 127-63 201, 04, 0 126-90 | 548-8 | 693-3 129-52 | 546-1 685-7 127-74 6 126-9 548-0 693-5 129-78 | 547-0 685-8 127-83 12 127-30 | 547-0 | 693-5 129-75 | 546-9 685-9 127-63 18 127-63 | 546-7 | 693-0 129-93 | 547-1 686-6 127-57 24 127-90 | 546-2 | 692.7 130-32 | 547-7 | 686-9 127-50 30 128-70 | 544-8 692-6 130-60 | 548-4 | 687-7 127-60 36 129-01 | 544-9 | 690-5 130-93 | 548-8 688-0 127-50 42 129-32 | 545-0 | 688-6 130-65 | 547-9 | 688-1 127-67 48 129-63 | 544-8 687-5 130-36 | 547-6 | 687-5 127-61 54 129-80 | 544-6 | 685-4 130-15 | 547-6 686-3 127-63 21h, 14, 0 130-05 | 544-9 | 684.8 129-72 | 547-4 | 687-5 128-28 6 130-25 | 544-7 | 882-4 129-76 | 548-0 688-6 127-87 12 130-05 | 545-6 | 680-5 129-53 | 548-3 688-6 127-98 18 129-67 | 546-1 679-5 129-47 | 548-0 | 691-6 127-63 24 129-62 | 547-9 | 678-0 129-30 | 548-3 693-6 127-63 30 129-43 | 549-6 | 676-8 129-25 | 548-2 | 697-2 127-50 36 129-53 | 550-3 | 676-4 129-34 | 548-4 | 699-4 127-17 42 129-62 | 550-5 | 676-3 129-47 | 548-4 | 701-1 127-23 48 129-63 | 551-2 | 675.4 129-10 | 547-8 702-5 127-03 54 130-22 | 551-1 674-8 129-10 | 547-9 703-9 127-63 BIFILAR THERMOMETER, BiriLar Corrected. BALANCE Corrected. Se. Div. on. 548-3 548-9 548°5 548-3 548-4 548-3 548-7 548-3 548-3 548-8 a 547-9 547-9 548-4 548-4 548-0 547-9 548-5 548-0 548-1 547-0 4h, * 47-0 546-8 547-5 547-9 548-5 548-9 549-6 548-6 548-8 547-8 faa | 548-3 549-0 549-7 549-1 549-9 551-8 551-6 552-6 552-2 550-7 Mic. Diy. DECLINA- TION. 126-95 | 126-87 126-53 125-79 125-48 127-77 125-97 | 125-22 124-30 124.27 124-57 125-42 125-72 125-93 125-66 125-68 126-03 126-19 125-93 125-79 BIF1tLak BALANcE Corrected.| Corrected. Se. Diy. Mic. Div. 697-2 697-8 694-5 695-2 695-7 695-7 695-9 695-4 697-0 695-8 694-4 692-8 694-9 695-3 692:8 697-9 697-8 697-7 698-7 696-0 696-8 696-4 697-6 697-5 698-0 697-7 697-9 696-5 696-1 695-9 696-7 697-1 698-8 700-0 698-8 698-3 698-3 698-2 696-7 696-7 59'8 | 59:8 | 59-9 | 59-9 | 59°8 | 587 | 587 | 586 | 58-4 | 58-4 | 586 | 588 | 59-4 | 59'8 | 59'8 | 59-2 | 588 BALANCE THERMOMETER, | 613 | 61:5 | 62:2 | 62-2 | 61-7 | 60-3 | 60:7 | 60°3 | 60:3 | 60-2 | 60°3 | 60-7 | 61-2 | 61-3 | 61:7 | 60:9 | 60-6 EXTRA OBSERVATIONS OF MAGNETOMETERS. 1841 AnD 1842. MAG. OBS. VOL. I. 50 ExtTRA OBSERVATIONS OF MAGNETOMETERS, 1841. Aveust 20. SEPTEMBER 25. SEPTEMBER 25. ottingen FILAR | BALANCE Gottingen wa | BIFILAR | BALANCE Gottingen : _| BIFILAR |BALANCE Mean Time of Pee ae PCa | Ga Meee eter eRe Gor | yh Com) [een Time of |e ogee Observation. i rected. | rected. Observation. rected. | rected. Observation. rected. | rected. dad h m. Ss. 4 Se. Div. Mie. Div. } a. Is a9 Sb ¢ Sc. Div. | Mic. Div. } da. h. m. s. 4 Sc. Div. Mie. Div. 20 22 40 O| 135.28 | 531-0 25 4 46 30 909 |25 5 53 30 655-2 45 0O| 135-82 695 48 30 764-7 55- 0| 147-23 50 O| 136-02 | 531-5 50 O| 141-87 56 30 666 55 0| 136-30 691 51 30 1032 58 30 702-9 23 O O| 136-97 | 533-8 5a { 812-0 6 0 O| 164-14 By Ohl Waieoiliv¢ 691 30 | 822-6 1 30 619 10 0| 137-83 | 532-5 55\( 829-0 3 30 783-5 15 0} 138-10 693 55 O| 121-40 5 0O| 188-98 20 O|} 138-30 56 30 910 6 30 823 58 5 849-7 8 30 794-9 30 854-6 10 0} 190-50. SEPTEMBER 25. 55 861-0 11 30 1007 5 O O| 130-45 13 30 760-3 125 1 57 30). 916 1 30 802 15 O| 141-12 2 0 O} 153-14 5 { 875-1 16 30 689 2 30 664-3 30 |. 861-1 18 5 834-2 4 4 42 ( 155-82 55 843-6 30 824-8 5 OF 161-38 5 O 135-42 55 809-8 5 18|| 165-54 | 6 30 823 19 42|( 194.20 6 30 1070 8 30 779-7 20 O 213-43 10 O| 129-78 9 42|( 142-20 20 18}( 221-56 11 30 975 10 OK 152-54 21 30 781 13 30 804:8 10 18 | 154-80 23 30 592-6 15 0| 124-62 11 30 898 25 0} 205-27 16 30 686 13 30 757-0 26 30 1000 He) 5) 784-6 15 O} 142-73 28 30 620-3 30 |, 799-5 16 30 1005 30 0| 182-91 55 |( 802-7 18 30 690-5 31 30 655 20 O|} 161-94 20 O| 138-30 33 30 660-7 21 30 882 91 30 907 35 0| 199-70 23 aN 863-0 23 30 705-7 36 30 682 30 864-3 25 0} 149-36 : 38 30 637-0 55 || 889-0 26 30 907 40 0| 204-40 24 42 jreets 28 30 676-9 41 30 841 25 O02 183-33 30.-0| 139-52 43. 5 f 693-0 25 18 | 179-95 31 30 894. 30 |. 680-7 26 30 1045 33 30 690-2 55 || 667-4 OSme5 863-2 34 42|( 139-05 45 0| 189-03 2 841-9 35 OK 130-32 46 30 943 55 827-9 35 18|{ 121-07 48 5 604-1 30 0| 128-98 36 30 847 30 615-5 31 30 965 38 30 793-2 55 620-2 Spy 752-8 39 42|( 180-65 50 0O| 182-25 30 757-7 : 40 0}, 184-00 51 30 878 55 767-4 40 18] 158-90 53} 643-3 25 10) 161-58 41 30 827 30 649-4 36 30 927 43 30 795-0 55 659-6 38 30 776-6 45 0] 171-42 55 0| 178-90 40 0} 131-47 46 30 695 56 30 763 41 30 940 48 30 620-02 58 5 622-8 43 30 731-3 50 0} 131-60 30 617-8 45 01! 136-37 i 51 30 838 20 | 606-0 Aug. 204 22h 1841. Observations made during a thunder-storm. 22 50™, Very heavy rain. 23h 15m, Clearing off. 23. Thermometers, } Bifilar, 60°-4; Balance, 61°0. The times of the Bifilar and Balance observations are 2™ 305 after those in the first column. | turned the torsion circle so as to brin From the above it would not appear that the mean directions of the magnets were affected by the thunder-storm; the vibrations of the Declination magnet were occasionally very considerable, and this appeared particularly the case when the fall of rain was unusually heavy ;— thus, at 22 50™, when the rain was exceedingly violent, the are of vibration amounted to about 17’, while at 22 45™, when the fall was com- paratively slight, the are of vibration did not exceed 3’. KE. R. Sept. 254 4h 1841. When the scale of the Bifilar Magnetometer went or was going out of the field of the reading telescope, Mr Russell g the scale into the field again ; the following were the readings of the torsion circle at the times annexed :— 2h 2m 305, 114°, usual position; 46 Om, 108°; 5 20m, 110°; 54 25m, 111°; 5» 40m, 109°; 54 50™, 111°; 6 25m, 112°. The reading of the Bifilar scale was estimated at the following times, the scale being in sight, but beyond the vertical wire of the reading telescope ; 2 2™ 308, 5h 18™ 305, 6h 23m 30s. At 54 48m 30s the scale was out of sight, so that the reading must have been Jess than is here noted. The observations of the Bifilar Magnetometer are reduced to the torsion circle reading 114°. See Introduction. 4 Sept. 2541841. Bifilar Thermometer, 2, 62°:0; 45, 651; 52, 65°0; 62, 64°9; 7h, 64°72. Balance Thermometer, 24, 602; 44, 63°-2; 5h, 63°2; 6h, 68°2; 72, 63°-2. EXTRA OBSERVATIONS OF MAGNETOMETERS, May 16—Juty 1. 1842. 51 DECLINATION, BIFILAR. BALANCE. DECLINATION. BIFILAR, BALANCE. Gottingen Gottingen Mean Time. Min.| Reading || Min.| Reading Mo ies fin. readin Min.| Reading in.| Reading of Cor- of Cor- Reduce ag of Cor- Cor- Obs.| rected. ||Obs.| rected. Ss. ’ bs.| rected. -| rected. Min. Reading ve Reduced. a’ he ‘ ; Se. Diy. : Mie. Diy. dig hs : 4 : Se. Diy. : Mic. Diy. May 16 4 998 May 25 9 132-13 557-3 May 16> 3 LD: 574-3 554-8 054.3 1055 556-6 549-1 1069 553-6 546-7 1072 544-9 1077 549-4 1074 479-8 551-5 1056 5 495-2 552-3 513-5 554-9 517-3 553°3 507-2 552-9 488-2 555-4 472-4 556-6 : 456-1 462-6 May 16 6 Bifilar Thermometer. May 164 5) 1842, 67°0; 6», 67°°7; 7, 67°°9. May 2447) 30™, 58°00. May 254 3h, 59°-5; 54, 61°1. July 14 20h, 58°4; 214, 58°-0. m= Balance Thermometer. May 164 5}, 64°-7 ; 64, 65°3; 74, 65°7. May 244 75 30m, 56°7, May 254 8h, 58"1. July 14208, 58°7; 212, eas Arcs of Vibration. Declination Magnet. July 14 20% 0m, 11/5 205 6™, 7°; 208 13m, 8’; 20 16™, 15”; 20 18™, 17’; 204 21™, 11’ 20h 24m, 10’; 20% 27m, 7’. Bifilar Magnet. July 14 20 2m, (224iv up) ; 212 4m, 14div; Q]h 7m, ]Bdiv, The arcs of vibration given above are taken from the readings as registered, and are therefore generally less than the truth; ina | few cases the arc was noted at the time of observation. The arc has not been given excepting when the difference of two consecutive readings exceeds 6’ for the Declination and 104 for the Bifilar. When the readings of the Bifilar do not shew a vibration but a progressive motion, the quantity moved in 50% is given in brackets with up or down attached as the reading was increasing or diminishing. July 1444, When.an observation of the Bifilar is given in brackets (__), it is the mean position 25% after the previous observation ; an extra reading having been made at 508, it is the mean of the readings at 0%, 258, and 50s. The observations of Declination in brackets are the mean positions 18* before the succeeding observation, obtained by making a reading 368 before the minute. 25% and 18* being the times of vibration of the Bifilar and Declination magnets respectively. Bifilar Thermometer. July 14 22h, 58°0; 52 DECLINATION. BIFILAR. Gottingen 5 é , Mean Time. Min Reading Min.} Reading e Reduced of Cor- Obs. Obs.| rected. Che els m. M m. Se. Div. July 1 21 || 27 | 124-88 28 489-1 30 | 120-05 31 464-6 (461-8) 33 | 117-97 34 471-9 36 | 122-00 37 465-4 39 | 125-35 40 472-4 (128-70) 42 | 129.72 43 463-9 (462-6) 45 | 126-55 46 464-0 (467-0) 48 | 133-13 49 484-2 485-8) 51 | 140-05 52 495-5 54 | 143-95 By) 503-8 (501-8) 57 | 145-50 58 498-2 | (495-5) | July 1 22 0 | 145-30 1 | 489-0 Baleleveon 4 491-8 (494-0) 6 | 135-35 7 497-1 (500-6) 9 | 138-23 10 513-2 (140-12) 12 | 139-25 (3) 514-9 (513-8) 15 | 128-70 16 502-6 (504-8) 18 | 126-42 19 494.3 21 | 129-17 22 485:3 (483-9) 24 | 129-85 25 489-3 (490-6) Dale a=70 28 489.4 (495-9) 30 | 130-38 31 501-4 (499-1) 33 | 130-18 34 507-6 (131-23) (511-7) 36 | 132-05 Bel 516-9 (519-1) 39 | 134-00 40 520-7 42 | 131-52 43 511-8 (510-6) 45 | ‘127-23 46 501-8 48 | 129-98 49 503-2 (501-7) Byll |) iB i757/3) 52 497-4 (498-9) 54 | 131-98 55 509-2 av | 33°67 58 505-1 July 1 23 |) O | 130-67 1 | 502-1 3 | 130-52 4 496-4 (493-2 6 | 130-18 7 485-5 (483-1) BALANCE. Min.| Reading of Cor- Obs.| rected. m. Mie. Div. 29 712 32 717 35 719 38 730 41 732 44 735 47 738 50 733 53 727 56 721 59 726 2 718 5 712 8 715 11 718 14 711 ily, 714 20 724 23 731 26 726 29 724 Bip 722 35 716 38 714 41 710 44 713 47 719 50 727 53 728 56 729 58 732 59 730 2 729 5 736 8 740 Gottingen Mean Time. Lyk July 1 23 | July 2 1 23h, 684; 24 Ob, 58°9; 1, 59°7. Balance Thermometer. July 14 22h, 58°4; 23h, 58°5; 24 0b, 59°-0; 14, 597. Ares of Vibration. 22 16m, 1 ]4iv ; Declination Magnet. PEONUEN Tp (UCN th 9)))s See note, page 51, on the observations in brackets. DECLINATION. a Reading Ohm Reduced. m. ‘ 9 | 129-23 12 | 134-27 15 | 134-95 18 | 135-42 21 | 137-77 24 | 137-97 27 137-30 30 | 137-57 33 | 136-08 36 | 136-82 42 | 131-45 45 | 130-65 48 | 131-52 51 | 128-10 54 | 128-43 57 | 128-70 0 | 124.75 3 | 123-00 6 | 123-07 9 | 120-45 12 | 116-35 15 | 113-93 (115-55 18 | 114-20 74h 113-20 24 | 119-52 27 | 130-38 30 | 136-62 33 | 134-47 36 | 148-44 39 | 141-13 42 | 135-88 45 | 133-33 48 | 128-63 51 | 130-58 54 | 131-65 57 | 128-17 0 | 126-28 ‘ExTRA OBSERVATIONS OF MAGNETOMETERS, JULY 1, 2. 1842. BIFILAR. Min. | Reading of Cor- Obs rected. m. Se. Div. 10 487-9 (486-8) 13 493-8 16 492-9 19 501-6 22 510-9 (5 12-4) 25 511-8 (514-2) 28 523-5 (526-6) 31 536-3 (540-0) 34 537-4 37 533-5 (530-4) } 39 527-0 43 524-9 (527-8) 46 523-6 49 515-8 52 521-8 55 524-0 (522-6) 58 516-8 1 509-0 (510-0) 4 522-2 (523-6) 7 530-3 (535-7) 10 535-5 is 537-3 (535-6) 16 540-0 19 547-3 (544-6) 22, 541-0 25 544-6 (547-4) 28 571-6 (575-3) 31 584-5 34 576-5 Bi7/ 559-1 (552-1) 40 544-4 43 547-0 46 554-3 557-0) 49 563-7 (566-9) 52 557-3 (553-3) 55 542-5 58 543-8 1 546-9 BALANCE. Min.| Reading of Cor- Obs.| rected. m. Mice. Div. 11 746 14 748 ity 750 20 TEP 23 746 26 744 29 733 32 721 35 723 38 728 44 721 47 728 50. 732 53 732 56 737 59 744 2 756 5 155 8 761 11 rire 14 779 17 793 20 804 23 820 26 835 29 842 32 857 35 907 38 977 41 1024 44 1044 47 1068 50 1109 a3 1124 56 1118 59 1096 2 1079 July 14 214 45m, 6’; 214 51™, 6’; 24 Ob 33m, 15’, Bifilar Magnet, July 14 22h 7m, Jo4Iv, DECLINATION. Peewee Mit’ | Reading Oba: Reduced. d. oh. |} m. y July 2 1] 3| 124-42 6 | 123-67 9 | 123-93 12 | 126-08 15 | 128-37 18 | 129-03 21 | 129-37 24 | 131-18 27 | 130-05 30 | 129-52 33 | 131-32 36 | 131-72 39 | 132.67 42 | 133-27 45 | 133-67 48 | 136-55 51 | 136-68 54 | 137-37 57 | 136-68 July 2 2] 0| 138.03 3 | 138-37 6 | 142-28 9 | 135-88 15 | 140-18 18 | 140-72 24 | 141-05 27.) 138-72 33 | 139-05 EXTRA OBSERVATIONS OF MAGNETOMETERS, JULY 2. 1842. BIFILAR, Min.| Reading of Cor- Obs rected. m. Se. Div. 4 546-5 (548-9) a 557-1 (558-1) 10 560-2 (562-3) 13 570-1 (571-7) 16 | 571-6 19 573-5 (576-5) 22 569-6 (562-6) 25 582-4 (585-5) 28 552-8 31 567-5 (565-8) 34 | 575-7 (567-9) Bt | roo (574-5) 40 572-3 (574-1) 43 568-1 46 570-3 (572-4) 49 | 574-1 (571-5) 52 564-6 561-3) bY) 556-5 (554-5) 58 542-9 1 542-4 (533-8) 4 538-8 (542.2) i 529-7 (522-1) 10 502-4 (508-3) 12 516-4 13 510-1 16 516-8 19 525-0 (526-6) 21 529-0 22 | 528-2 25 540-5 (538-0) 28 531-7 (532-8) 30 538-6 31 532-7 34 536-2 BALANCE. — Min.| Reading of Cor- Obs.| rected. m. ‘5) 8 11 1020 14 995 17 978 20 956 23 950 26 925 29 921 32 906 35 895 38 871 41 856 44 847 47 832 50 813 53 810 56 806 58 810 39 811 2 814 5 798 8 809 11 815 14 813 7 806 20 794 23 797 26 797 29 794 32 790 35 795 Gottingen Mean Time. ey pais July 2 2 July 2 3 July 2 4 July 2° 5 MAG. OBS. DECLINATION. BIFILAR. 53 BALANCE, Reading Reduced. 138-85 135-15 135-82 132-27 132-87 133-07 133-80 133-73 134-95 133-53 134-13 137-43 Bifilar Thermometer. July 24 2h, 60°0; 34, 60°5; 5h, 61°6; 65, 61°8. Balance Thermometer. July 24 2h, 59°9; 3h, 60°2; 5h, 61°2; 6h, 614, Arcs of Vibration. VOL. I. Bifilar Magnet. July 2¢ 2h 7m, 28o1v_ See note, page 51, on the observations in brackets. Reading Cor- rected. Se. Div. 523-4 524-0 529-5 536-2 (537-4) 535-0 539-7 540-2 559-8 (561-3) 557-4 (554-7) 550-3 495-2 517-1 527-2 536-3 538-4 537°8 541-1 563-5 546-7 552-1 535:8 557-5 559-2 Reading Cor- rected. 2 798 5 796 29 776 32 784 52 825 58 822 4 819 10 808 16 809 22 806 28 806 34 796 40 800 46 795 52 804 58 799 4 811 54 ExtTRA OBSERVATIONS OF MAGNETOMETERS, JULY 2. 1842. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. Ph Saat Min.| Reading | Min-| Reading | Min.| Reading eee Reading we Reading | Min.) Reading of Reduced. us (Os os Cor- Reduced. || 2 vor of Cor- Obs. Obs.| rected. Obs.! rected. | Obs.| rected. Obs.| rected. d h. m. i m. | Se. Div, m. Mie. Div. dt; he “d m. Se. Div. July 2 6 6 132-13 || 7 576:8 8 983 July 2 Ff 122-47 || 562 | 572-4 9 133-53 || 10 588-0 il 993 (574-1) | | (591-0) 122-73 || 55 | 575-7 12 ; 596-3 13 1000 125-55 || 58 573-5 14 134-00 || 15 586-6 July 2 13 126-42 1 572-6 16 588-0 117/ 1011 130-12 8 560-7 (589-5) | 128-43 | 14 | 547-9 18 | 130-32 || 19 | 588-0 20 1012 129-30 || 20 | 545-6 21 588-2 129-37 || 26 541-9 DPA Bysifhll 23 1006 129-85 || 32 538-4 94 | 129-17 || 25 | 582-6 26 996 127-70 || 38 | 537-4 Pai 570-2 124-82 || 44 | 534.2 28 568°5 29 1002 125-22 || 50 526-7 (572-4) 128-90 || 56 | 504-9 30 | 130-72 || 31 | 604-7 || 32| 1047 | July 2 9 125-82 || 1 | 480-2 33 602-0 125-08 4 | 473-0 34 597-3 35 1044 122-93 7 | 473-0- 36 | 128-30 || 37 | 594.4 38 1031 120-58 || 10 | 482-6 39 594-3 116-77 13 | 468-9 40 | 592.0 41 1020 116-83 || 16 | 483-4 42 | 127-97 || 43 | 584-2 | 44] 1002 (486-0) } 45 586-6 18 117-70 || 19 | 492-2 i 46 585-3 47 987 21 116-70 || 22 501-1 (587-6) 24 116-35 || 25 | 489-1 48 123-20 || 49 593-6 50 983 | (484-1) | 51 117-10 || 52 602-3 53 959 | 27 114-22 || 28 | 476.0 54 118-43 |} 55 576-9 56 945 30 112-87 || 31 474-8 (572-9) (473-2) ' 57 115-48 || 58 571-6 59 945 33 114-35 || 34 466-3 July 2 7] 0} 108-05 | 1 592.4 2] 925 36 | 113-73 || 37 | 476-0 (595-8) 39 | 113-20 || 40 | 466-0 l ; 3 110-38 4 601-7 5 916 42 109-98 || 43 461-9 6 | 114-35 | 7 | 602-7 8 922 (460-4) j (603-7) 45 | 108-16 46 | 447-1 | | 9| 115-55 | 10 | 597-4 | 11 927 48 | 109-18 || 49 | 434.5 | (596-0) , dl 52 | 419.4 ) 113-80 || 13 588-6 14 932 a4 110-65 || 55 | 406-3 15 112-00 || 16 586-5 17 930 ail 58 398-8 18 | 109-12 | 19 | 604-2 | 20 923 | July 210] o 1 | 387-4 (607-0) | 4} 104-90 || 4 | 392.9 Pail 111-05 || 22 (UB E71 2B} 912 6 106-70 Zh 386-5 24 115-62 || 25 604.4 26 906 8 108-43 i (602.4) 10 110-92 || 10 | 376-7 27 119-18 || 28 592-8 29 908 12 117-03 || 12 |Gutof field.! | 30 120-72 || 31 594-8: 32 908 14 126-42 (593-8) | 33 122-27 || 34 585-1 35 904 32 130-32 36 121-18 || 37 584-1 38 901 34 IBY (cBIE 39 122-93 || 40 | 579-5 41 896 36 139-38 (577-2) . 38 | 141-05 42 122-20 || 43 569-2 44 890 40 138-72 (568-1) 42 | 134-95 45 123-07 || 46 567-0 47 885 44 130-18 || 44 323-3 | 48 125-55 || 49 561-3 50 889 46 126-48 || 47 | 358-4 Bifilar Thermometer. July 24 74, 61°6; 94, 60°6. Balance Thermometer. July 24 74, 61°-2; 94, 60°-7. Ares of Vibration. Declination Magnet. July 24 10h 32m, 15’; 10% 34m, 7’; 10% 36™, 19’; 10 38™, 17’; 10 40™, 10’; 10 42m, 26’. July 24102 10™, Bifilar Scale going out of field, reading estimated. July 2210216™, ‘Torsion circle of Bifilar turned from 109° 10’ to 111° 35’. Various attempts were made to bring the scale into the field of the reading telescope, while the mirror for illuminating the collimator had been thrown out of position ; this was not discovered till | about 38™. The Balance crosses had also gone out of sight till the wooden front of the box was removed. In the adjustment of these two instruments the Declination readings were lost for some time. After 13" the torsion circle was turned to its original position 109° 10’. The observations of the Bifilar Magnetometer from 104 38™ till 13" are reduced to the torsion circle reading 109° 10’. See Introduction. See note, page 51, on the observations in brackets. Extra: OBSERVATIONS OF MAGNETOMETERS, JULY 2, 3. 1842. 55 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. potimgen | Min.| pending || Min. Reading || Min.| Reading Mo net | Min.| pesaine | Min.! Reading || Min. Reading of | Reduced. || of Cor- of Cor- Il Of ie cance, Oem tee COFM of ; Cor- Obs. Obs.| rected. Obs.| rected. Obs. Obs.| rected. Obs.| rected. GG Tay m. if | m. Se. Div. m. Mic. Div. d. h. m. & m. Se. Div. m. Mie. Div. July 2 10 | 48 123-27 48 346 July 2 12 | 30; 110-85 30 | 498 50 | 122-33 || 50 | 374-4 51 354 32 | 113-60 | 32. 517-2 33 479 52 118-97 || 53 | 424-5 34 117-57 | 35 | 506-5 54 116-77 | 54 327 36 120-32 | 36 | 482 56 115-88 || 56 | 419-4 57 310 38 119-38 | 38 | 494.2 39 509 | 58 | 116-70 || 59 | 423-9 40 117-57 || 41 500-0 July Zt 0 116-77 0 287 42 119-03 42 500 2, 119-12 2) 423-4 3 267 44 121-12 | 44 | 500-9 45 489 4 123-33 5 | 422-6 46 124-486] 47 | 478-8 6 128-17 6 244 48 121-38 48 520 8 130-05 8 | 413-5 9 265 50 114-55 || 50 | 487-1 51 529 10 129-85 || 11 | 417-2 52 | 114-00 || 53 | 491-4 2 128-23 12 274 54 | 110-78 54 516 14 128-77 || 14 | 432-4 15 294 56 109-65 || 56 | 495-8 57 497 16 127-57 || 17 | 458-8 58 110-78 || 59 | 503-4 18 127-50 18 307 July 2) 3 0 109-85 0 488 20 129-23 || 20 | 463-6 21 313 2 109-92 22. 129-23 || 23 | 458-2 24 130-72 24 321 July 3 19 58 g20 26 132-53 || 26 | 405-8 Pal 303 July 3 20 1 132-20 2| 443-6 28 128-70 || 29 | 390-7 6 136-82 7 | 443-4 8 551 30 126-22 30 292 (441-7) 32 | 121-58 || 32 | 390-9 33 315 9 140-98 | 10 | 439-6 11 564 34 118-70 || 35 | 406-8 12 133-27 | 13 | 435-9 14 560 36 | 122-60 36 301 (434-7) 38 131-32 || 38 | 410-2 39 220 15 136-42 || 16 | 435-0 17 558 40 138-43 || 41 392-1 (434-0) 42 | 139-58 42 156 18 136-15 || 19 | 430-3 20 560 44 142-92 || 44 | 355-2 45 109 (428-9) 46 | 147-83 | 47 | 288-7 21 | 136-95 || 22 | 422.9 || 93 538 48 150-28 48 74 24 |} 139-58 | 25 | 422-9 26 533 50 139-98 || 50 | 293-3 51 177 (426-0) “| 52 113-33 || 53 | 396-5 27 135-62 || 28 ' 430-6 29 524 54 108-23 54 119 (432-8) 56 118-43 || 56 | 442.2 57 128 30 137-15 || 31 417-8 32 521 58 116-77 || 59 | 486-3 (416-8) July 22 0 115-82 0 165 33 138-03 || 34 | 420-3 35 532 2 126-82 2 | 513-6 3 194 N 36 141-60 || 37 | 430-8 38 548 4 134-75 5 502-5 : (428-1) 6 140-12 6 264 39 139-32 | 40 | 422-7 41 565 8 133-13 8 | 481-0 9 369 (420-4) 10 124-48 || 11 | 486-2 42 136-48 | 43 | 414-3 44. 561 12 118-83 12 386 (415-5) 14 120-52 || 14 | 482-2 15 392 45 138-10 || 46 | 424-5 47 551 16 116-77 || 17 | 515-7 | (425-5) 18 113-80 18 426 48 136-75 || 49 | 424-1 50 538 20 108-78 || 20 | 530-3 mal 472 i - (425-9) 122 106-63 || 23 | 553-9 i al 134-60 || 52 | 416-0 53 541 | 24 110-52 24. 463 | (413-5) 26 115-62 || 26 | 537-9 Pail 488 54 136-48 || 55 | 417-2 56 552 28 112-53 || 29 | 527-1 (410-6) Bifilar Thermometer. July 2411, 60°1; 124, 59%7 ; 18h, 59°2; 34 20h, 564. Balance Thermometer. July 24 114, 63°3; 12}, 62°-2; 18h, 61°1; 34 20h, 56°4, Arcs of Vibration. Declination Magnet. July 24102 48™, 7’; 10h 50m, 8’; 11h 50™, 10’; 114 52m, 8’; 34 20h 12m, 8’; 20h 4gm, 9’; 20% 54m, 13’. Bifilar Magnet. July 24 11% 23m, 10div; 114 41m (214iv down); 11h 43m (42div up); 114 59m, 1Odiv; 12h 11m, 124aiv; 34 20h 25m, 174iv ; 20h 28m, QOdiv ; QOh Blm, 1Odiv; 20h 34m, L5div; 2Oh 46m, Oddiv; QOb HQm, ]Gdiv; QOh 55m, B54iv (noted). July 24 12h 23m, Reading of Lifilar estimated, Scale going out of field. July 34 20% Om. The following are the readings of the Declination 18* before and 185 after the minute, the reading at the minute having been lost, 19» 59™ 42s, 11678; 20» 0m 18s, 1276. See note, page 51, on the observations in brackets. 56 EXTRA OBSERVATIONS OF MAGNETOMETERS, JULY 3, 4. 1842. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. a da Min.) Rending | Min-| Reading | Min.| Reading Ri at Min.| peadine || Min-| Reading | Min.| Reading ' of Re Gua a of Cor- of Cor- of Re aoc of Cor- of Cor- Obs. Obs. | rected. ||Obs.| rected. Obs. Obs.| rected. ||Obs.| rected. d. h. m cf m. Se. Div. du) chy m. v, m,. Se. Div. m. Mic. Div. July 3 20 || 57 133-67 || 58 | 442-5 July 3 22] 36 | 140-38 || 37 | 496-5 38 720 422-4 39 | 139-32 || 40 | 503-8 4] 716 July 3 21 0 134-20 1 |) 397-4 42 | 138-30 || 43 | 511-7 44 716 387-2 45 137-43 || 46 | 505-0 47 716 469-2 48 136-02 || 49 | 497-8 50 724 3 | 148-19 | 4] 356-0 (136-35) (501-9) 6 144-09 7 | 397-6 51 135-42 || 52 | 502-1 53 722 (401-8) (137-70) (505-2) 9 130-45 | 10 | 397-6 54 | 135-28 || 55 | 502-8 56 730 | (404-5 (499-4) 12 | 136-55 || 13 | 389-9 57 | 135-55 || 58 | 498-8 58 742 (383-9) 59 757 15 140-78 || 16 | 388-5 July 3) 23 0 | 133-27 1 | 494-2 18 149-71 || 19 | 402-7 / 2 | 501-6 2 757 (404-5) 3 131-05 4 | 494-7 5 THE 21 155-70 || 22 | 423-7 6 130-85 7 | 490-3 8 767 (427-8) (489-2) 24 | 146-84 | 25 | 446-8 9 | 131-45 | 10] 484.2 11 779 27 150-58 || 28 | 457-0 (482-4) (149-63) (460-2) 30 | 150-58 | 31 | 452-6 33 | 146-77 |, 34 | 483-7 12 | 133-87 || 13 | 477-7 14 785 15 | 135-95 |) 16 | 482-1 17 793 18 | 136-62 || 19 | 503-5 20 777 21 | 135-88 || 22 | 473-0 23 806 24 | 137-97 || 25 | 460-2 26 806 : 36 | 142-47 | 37 | 494-4 39 | 143-27 | 40 | 526-8 42 | 139.32 || 43 | 505-0 27 | 135-22 || 28 | 467-6 | 29} 809 | 30 | 137-83 | 31 | 480-6 | 32| 799 3| 137-23 || 341 5020 | 35°) 791 45 | 140-38 | 46 | 514-1 48 | 140-52 | 49 | 521-4 51 | 138-17 | 52 | 503-0 (130-58) (496-9) 54 | 129.58 | 55 | 492.0 57 | 134-40 | 58 | 502-3 | 36 | 136-02 | 37 | 508-0 || 38 789 39 | 136-35 || 40 | 506-2 || 41 779 42 | 137-97 || 43 | 501-8 44 767 45 | 138-23 || 46 | 497-3 47 780 (503-5) 48 | 136-62 || 49 | 487-3 || 50 789 July 3 22) @Atgs5-400' 1 | Soa4 51 | 139-78 || 52) 491-5 || 53 791 (505-5 54 | 138-58 || 55 | 497-0 || 56 803 3 | 136-42 | 41] 506-8 57 | 137-15 || 58 | 492-9 || 59 818 (510-2 (495-2) 6 | 139-85 | 7 | 505-2 July 4 0]|/ o| 137-23 || 1] 499-0 2 822 (506-4) 3 | 135-28 | 4] 499-5 5 822 9 | 140-78 | 10 | 511-9 (501-5) (510-4) 6 | 137-23 | 7] 500-2 8 821 12 | 141-67 || 13 | 508-0 (502-1) (512-2) 9 | 136.42 | 10 | 504-7 | 11 817 15 | 142.00 | 16 | 498-5 12 | 135-48 | 13 | 508-3. || 14 815 (497-0) 15 | 136-42 || 16 | 508-9 | 17 822 18 | 138-52 | 19 | 486-3 18 | 134-68 | 19 | 503-6 || 20 828 21 | 140-65 || 22 | 502-5 21 | 135-48 || 22 | 502.4 || 23 834 24 | 142.54 | 25 | 502.9 24 | 135-68 || 26] 500-3. || 28 836 (504-5) 30 | 135-68 || 32 | 501-3 || 34 829 27 | 142-87 | 28 | 501-6 36 | 134-68 || 38 | 514-2 || 40 837 42 | 132-93 || 43 | 520-1 44 847 30 | 141-87 | 31 | 496.5 45 | 132-27 || 46 | 517-8 47 | sod 33 | 142-47 || 34 | 489.2 48 | 132-67 || 49 | 516-1 50 | 858 (488-2) a) 133-40 || 54 | 516-8 56 863 July 34 21> 1™, The four observations in brackets are the readings at 0™ 35s, 1™ Gs, 1™ 25s, and 1™ 50s. Between 1™ 25% and 1™ 50s the magnet went up 110¢iv, 214 4m, Reading of Bifilar estimated, Scale going out of field. Bifilar Thermometer. July 34 214, 56°4; 22h, 57°0; 23, 58°2; 44 Ob, 58°8. Balance Thermometer. July 34 21", 56°5; 22,57°-0; 23h, 57°9; 44 Ob, 584, Ares of Vibration. Declination Magnet. July 34 204 57™,7’; 214 3m, 67’ (noted); 212 6m, 44’; 21h 9m, 99’; 91h 12m, 15’; 214 39m, 9’; 21h 49m, 7”, Bifilar Magnet. July 34 20h 58m, ]5div; 21h 7m, ]Qdiv; 21h JOm, BOdiv; 21h 13m, QOdiv; Qih 19m, 1Odiv; 21h 22m, [Odiv; Q1b Bim F 404iv (noted) ; 21 37™, 404iv (noted) ; 21h 55m, 1]div; Q2h Jm, ]]div; 20h 19m, ]Adiv; 9h 37m, ]4div; 99h 52m, ][Bdiv; 23h 22m, ]Qdiv ; 23h 25m, S2div; 23h 28m, 1Gdiv ; 23h 43m, 1Odiv; 23h 58m, QOdiv (noted). See note, page 51, on the observations in brackets. EXTRA OBSERVATIONS OF MAGNETOMETERS, JULY 4, 9. 1842. 57 DECLINATION. BIFILAR, BALANCE. DECLINATION. BIFILAR. BALANCE. Gotti : és F 7 , Gottingen F é , 7 z ae oa Ge Min. Reading Min.| Reading || Min.| Reading Meda el Min. Reading Min.| Reading || Min.| Reading of Padinced of Cor- of Cor- of Raduced of Cor- of Cor- Obs. “|| Obs. | rected. Obs. | rected. Obs. *||Obs. | rected. ||Obs.| rected. cc ae m. 4 m. Se. Diy. ad. b m. f m. Se. Div. m. July 4 57 | 131-85 July 4 3 | 48 | 131-98 | 50 | 577-8 | 52 July 4 1 0 | 132-33 2/ 516-0 54 131-05 | 56 | 576-3 58 6 131-25 7 | 529-4 July 4 4 0 125-75 23} 602-5 4 (532-1) 6 128-50 8 616-0 10 9 | 537-7 12 | 133-40 | 14 | 612-6 16 10 | 538-2 12)) 131-12 || 13 | 529-2 15 | 134-07 || 16 | 531-1 18 | 130-25 | 19 | 535-5 21 | 127-70 || 22 | 541-4 18 | 128-30 | 20 | 618-7 22 24 | 130-92 | 26 | 611-1 28 30 | 132-87 | 32 | 619-5 34 36 | 135-22 | 38 | 613-5 40 42 | 137-70 || 44 | 609-0 46 (134-53) (542-6) 48 | 131-25 | 50 | 629.2 || 52 24 | 135-22 | 25 | 547-1 54 | 126-75 | 56 | 627-4 || 58 (545-5) July 4 5] 0| 129.43] 2| 572-7 || 4 27 | 132-40 | 28 | 540-2 6 | 136-08 | 8 | 533-7 | 10 12 | 132-73 | 14 | 542-6 16 18 | 132-47 | 19 | 542-9 20 21 | 134-20 | 22 | 548.4 23 24 | 135-08 | 25 | 550-2 26 27 |. 137-08 || 28 | 552-8 29 30 | 137-23 | 31 | 555-1 32 (537-7) 30 | 135-28 | 31 | 519-7 33 | 136-68 || 34 | 520-5 36 | 135-95 || 38 | 526-8 42 | 123-40 | 44 | 529-5 48 | 128-30 || 50 | 572-4 52 | 604-4 33 | 135-62 | 34 | 557-6 39 53 | 613-2 36 | 132-47.|) 37 | 560-5 38 54 | 127-50 39 | 128-57 || 40 | 568-0 41 56 | 616-4 42 | 127-17 || 43 | 569.0 44 58 | 123-87 || 58 | 630-7 45 | 127-50 | 46 | 566.2 47 (635-2) 48 | 127-50 | 49 | 565.9 50 July 4 2 123-87 636-9 51 | 128-50 | 52 | 571-0 || 53 ‘ 54 | 129.72 || 55 | 562.7 || 56 57 | 127-23 || 58 | 557-7 || 59 July 4 6] 0| 128-03) 1 | 555-5 2 3 | 127-30 | 4] 552.2 5 6 | 125-42 | 8 | 549.3 | 10 12 122.27 14. 551-3 16 18 122.73 || 20 558.7 22 24 | 127.43 || 26 | 562.2 || 28 30 | 130-38 | 32 | 550.4 | 34 36 131-52 || 38 544.5 40 42 | 132-73 | 44 | 530.7. || 46 48 | 131-45 | 50 | 534.6 || 52 54 | 131-65 | 56 | 533-8 || 58 July 4 7] 0-| 131-25 | 2] 525.9 4 6 | 130-52 | 8-| 530-3 || 10 12 | 130-32 | 14 | 531-0 || 16 18 130-92 || 20 531-7 22 94 131-52 || 26 528-1 28 30 | 131-65 | 32 | 529-9 || 34 36 | 131-65 || 38 | 530-8 July 4 9 28 30 | 136-15 || 32 | 530-6 122-93 123-47 124-00 0 2 625-6 4 632-4 6 611-3 8 | 122-20 8 | 604-1 10 | 123-27 || 10 | 630-1 12 | 123-60 | 12 | 631-6 14 | 122-93 || 14 | 623.0 16 | 123-80 18 | 123-20 || 18 | 614-4 (585-1) 20 | 119-58 22) 119-18 || 22.) 567.2 24 123-73 || 24 | 571-9 26 | 570-6 28 | 126-90 || 28 | 568-0 30 123-87 || 30 576-1 32 | 121-05 || 32 | 597-6 34 | 130-25 || 34 | 603-6 36 128-83 || 38 | 614-5 | 42 | 130-92 || 44 | 570.7 | 48 126.42 || 50 | 587-3 54 126-82 || 56 | 581-5 July 4 31] o | 198.97] 21 580.3 58 6 | 128-57 | 8 | 588.2 July 410] 0| 133-13 | 2) 524-8 12 | 139-05 | 14 | 571-7 18 | 131-12 || 20 | 577.4 July 9 4 58 24 | 131-85 || 26 | 570-6 July 9 5] o| 134-33 | 2| 565-6 30 | 128-03 || 32 | 602.5 28 36 | 134-20 | 38 | 590-8 42 | 133-53 || 44 | 585.4 30 | 132-27 || 32 | 543-7 34 36 | 132-93 || 38 | 548-2 July 42 25 18™, The reading in brackets made at 18™ 505. 17 35s till 19™ 15s, the Bifilar magnet went down 484iv. Bifilar Thermometer. July 44 14, 59°6; 24, 60°5; 35, G1°2; 5h, 62°-4; 6h, 62°8; 7h, 62°9; 94 5h, 65° 1. Balance Thermometer. July 44 15, 59°2; 2h, 59°9; 3h, 60°5; 5», 617; 6h, 62°-2; 7h, 6274; 94 5h, 637, Arcs of Vibration. Bifilar Magnet. July 44 1» 58m, 1Odiv; 2h 7m, ]Qdiv; Qh gm, 4Qdiv; Bb 3lm, 18div, See note, page 51, on the observations in brackets. MAG. OBS. VOL. I. id 58 EXTRA OBSERVATIONS OF MAGNETOMETERS, JULY 22—SEPTEMBER 2. 1842. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE, Se enze” nel atint Reading |Min.| Reading || Min.| Reading Me ee el a Reading |Min-| Reading || Min. of Reduced, of Cor- of Cor- of Medica: of Cor- of Obs. Obs.| rected. || Obs.| rected. Obs. Obs.| rected. || Obs. Gl dn, m. v m. Se. Div. m. Mic. Div. d. h. || m. U m. Se. Div. m. July 22 19 58 779 Aug. 19 5 | 18 124-55 || 19 | 557-3 July 22 20 0 131-75 2} 521-0 20 | 558-0 21 6 131-98 8 | 520-7 10 778 22 12 130-85 || 14 | 523-0 16 779 24 123-73 || 26 | 565-9 27 18 130-18 28 28 129-17 30 126-62 || 31 576-8 32 78-2 33 July 29) HD 0 134-07 2 | 547-7 34 4) 561-4 35 129-37 5 | 564-1 36 130-05 || 38 | 578-6 39 6 | 563-4 40 SSF OO SES 42 132-47 || 44 | 575-9 46 July 31 19 58 714 48 134-88 || 50 | 572-9 52 July 31 20 0 124-27 || 2) 519-1 58 | &S ie 524-9 Aug.19 6] O| 134-53 || 2] 564-7 4 | 527-3 8 | 575-0 10 122-00 || 12 | 520-3 14 775 18 129-43 || 20 | 555-8 22 18 122-13 || 20 | 522.5 24 127-43 || 26 | 543-6 28 30 124-82 Aug. 4 22 58 767 44 | 559-2 46 Aug. 4 23 0 138-92 Dale oles 48 125-35 rd 6 138-17 8 | 520-2 10 754 58 12 134-33 || 14 | 523-0 16 753 Aug. 19 7 0 127-50 2) SoG). 22 Aug. 5 19 58 7015) 24 126-02 || 26 | 550-0 Aug. 5 20 0 | 131-78 2 506-9 58 12) 7127-038) |) 14) fal2-9 16 726 Aug. 19 8 0 127-50 2) 537-6 28 732 30 125-08 || 32 | 520-4 Aug. 24 4 58 846 58 fol Aug. 24 5 0 131-80 PANN ete) Aug. 5 21 0 | 124-55 PAM Gy be 12 125-62 || 14 | 547-8 16 873 Aug. 5 22 58 792 18 124-48 || 20 | 543-3 22 874 Aug. 6) 43) 0 125-82 2 | 494-9 : 58 860 30 129-78 || 32 | 507-7 34 803 Aug. 24 6 0} 127-17 2 | 548-3 Aug. 6 0O | 30 131-65 || 32 | 523-6 34 799 Aus. 6) ji 58 794 |Sept. 2 1 . | 58 767 Aug. 6 2 0 134-82 2| 529.2 Sept. 2 2 0 132-40 2} 538-8 Aug. 6 4 58 881 | Sept. 2 3 22 886 Aug. 6 5 0 124-07 2) .5al-6 24 131-92 || 26 | 527-2 28 893 20 | 565-2 22 858 30 130-32 || 32 | 529-2 34 905 24 122-40 || 26 | 573-3 28 854 36 128-37 || 38 | 536-7 40 902 30 121-65 || 32 | 573-4 42 127-23 || 44 | 538-7 46 896 42 124-35 || 44 | 557-1 Sept. 2 4 32 | 544-2 34 896 45 | 553-5 46 868 36 130-32 Aug. 6 6 58 802 58 849 Aug. 6 7 0 29-43 2) 550-5 | Sept. PB) 5) 0 130-95 2| 542-5 Sept. 2 6 2 839 Aug. 16 19 58 758 Sept. 2 8 6 105-68 Aug. 16 20 0 120-15 PA || SBE 12 102-33 16 831 36 126-75 || 32 | 504-3 34 700 18 96-49 || 20 | 534-9 22 820 |” 24 94-28 || 26 | 548-2 28 799 Aug. 19 4 58 1124 30 100-79 || 32 | 553-3 34 790 Aug. 19 5 0 125-05 2) “595-2 36 108-72 || 38 | 540-9 40 787 6 127-03 9 | 585-9 10 1117 42 110-32 || 44 | 544-1 46 781 2, 126-08 | 13 | 567-2 48 114-00 | 50 | 5422 52 776 14 | 564-6 15 1104 | 54 115-45 || 56 | 544-2 58 771 16 1100 Sept. 2 9 0 117-70 2) 536-1 17 124-27 Bifilar Thermometer. July 224 20h, 52°-9; 294 5h, 61°-5; 314 204, 60°-9; Aug. 44 23h, 64°7 ; 54 20h, 56°9; 54 21h, 57°2; 54 QBh, 58°8 ; 62 Oh, 60°6; 64 2h, 626; 64 5h, 65°; 64 7, 67°-0; 164 20h, 61°3; 194 5h, 72-0; 194 Gh, 72°-0; 194 74, 71°0; 194 8h, 69°9; 244 5h, 63°-5; 244 Gh, 634; Sept. 24 2h, 65°-7 ; 24 5h, 66-2; 24 gh, 65™6. Balance Thermometer. July 224 20%, 53°-1; 314 204, 61°3; Aug. 44 234, 63°8; 5¢ 20h, 57°-3; 54 21h, 57°-5; 54 23h, 58°-6; 64 Ob, 60°-0 ; 64 2h, 61°6 ; 64 5h, 641; 64 7h, 64-1; 164 20%, 61°2; 194 54, 71°6; 194 Gh, 71°6; 194 7h, 7078; 194 Sb, 69S; 244 5h, 635 ; 244 6h, 63°5; Sept. 24 2h, 65°2; 24 5h, 65°-7 ; 24 Ob, 65-4, EXTRA OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 5—NOVEMBER 10. 1842. 59 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. a Min.| Reading || Min-| Reading | Min.| Reading see Min.) Reading | Min.| Reading | Min. Reading if Reduced. of Cor- of Cox of Reduced. of Cor- of Cor- Obs. Obs.| rected. Obs.| rected. Obs. Obs. | rected. ||Obs. rected. is? ie m. 4 m. Se. Div. m. Mic. Div. d. h. m. “4 m. Sc. Div. m. Mie. Div. Sept. 5 4 58 803 Oct. 17 6 || 36 121-73 || 38 | 542-4 | 40 780 Sept. 5 5 0 129-25 2] 553-4 44 | 548-1 46 ie Sept. 5 6 || 48 115-88 || 50 | 553-9 52 865 Oct. 17 19 58 758 54 | 115-35 || 56 | 558-9 58 862 Oct. 17 20 0 126-46 2] 529-3 Sept. Bee) 12 121-65 || 14 | 550-4 16 848 40 124-48 | 36 | 531-8 35 760 Oct. 17 22 58 762 Sept. 20 4 58 791 Oct. 17 23 0 126-45 AN 3248307/ Sept. 20 5 0 135-52 2) 545-5 Oct. 18 0 2]| 129-43 1 | 537-9 0 773 Sept. 20 7 || 36 109-45 || 38 | 584-3 40 758 Oct. 18 1 4} 131-38 2 | 550-1 1 758 42 114-48 | 43 | 579.8 58 747 48 114-07 || 50 | 568-3 52 759 Oct. 18 2 0 130-92 2 | 548-7 Sept. 20 19 28 774 Oct. 18 3 4 132-87 2 Neos 1 748 30 134-88 || 32 | 509-9 Oct. 18 4 58 767 58 757 Oct. 18 5 0 126-30 2] 542-2 Sept. 20 20 0 135-42 2) 525-5 58 760 Nov. 3 4 |i 58 758 Sept. 20 21 0 128-77 2) 529-6 Nov. 3 5 0 133-53 2| 544-0 58 779 INOve (3) 82 56 882 Sept. 20 22 0 131-38 2] 529-8 58 873 58 777 Nov. 3 8 0 117-57 D3 || Arion. Sept. 20 23 0 136-28 2] 521-9 12 121-05 || 10 | 532-2 14 855 58 773 Sept. Zip ae 0} 136-48 21 545-0 Nov. 5 1 58 756 58 766 Nove 5) 92 0 131-27 2| 542-7 Sept. 2L aA 0 | 135-42: 2) 542-2 Nov. 5 3 || 30 130-07 58 769 Nov. 5 4 0 128-87 2| 544-5 4 758 Sept. PA 0 137-30 2) 539-0 30 128-17 || 32 545-0 34 753 58 776 58 761 Sept. 21 3 0 134-95 2| 542-6 Nov. 5 5 0 127-65 2 544-2 58 791 42 127-70 || 44 | 545-2 46 755 | Sept. 21 4 0 132-73 2) 544-3 Nov. 5 6 0 126-87 2 550-0 4 743 | 1 58 808 30 127-18 || 32 | 547-9 34 733 | Sept. 21 5 0 130-72 2) 544-3 58 789 | Nov. 9 19 58 704 } Sept. 21 6 0 129-92 2] 546-4 Nov. 9 20 0 126-02 2| 543-8 | 58 789 | Nov. 9 21 || 3] 123-80 | 0| 536-5 0 747 } Sept. 21 7 0 128-70 2} 545-8 Noy. 9 22 58 745 58 771 Nov. 9 23 0 134-95 PY), ByPAitoi | ] Sept.21 8 0 125-28 2a aae6 33 | 515-6 32 758 Noy. 10 0 1 | 525-1 0 ite W Oct. 17 4 58 764 Nov. 10 1 || 30 140-32 |) 21 526-3 20 774 h Oct. 17 5] 0} 116-43 | 21] 547-0 58 776 12 | 108-03 | 13 | 534-1 14 808 Noy. 10 2 0 138-37 2) 548-4 15 107-15 | 16 | 536-4 17 811 Nov. 10 3 3 133-07 2] 539-2 0 786 18 116-01 | 20 | 544.7 22 808 49 125-42 || 48 | 512-6 46 851 24. 105-08 | 26 | 556-7 28 809 Nov. 10 4 |) 25 117-83 || 26 | 536-5 28 828 30 107-70 | 32 | 551-1 34. 811 30 119-65 36 109-58 | 38 | 544-1 40 814 Noy. 10 4 || 48 126-90 || 50 | 538-0 52 809 48 110-98 50 | 540-1 52 813 58 801 58 812 Nov. 10 5 0 126-97 2 544-0 | Oct. 17 6 0 115-22 2! 528-9 58 805 | 12 121-05 | 14 | 533-6 16 807 Nov. 10 6 0 129-43 2 | 533-5 30 126-35 | 32 | 534.3 34 796 Nov. 10 19 58 718 Bifilar Thermometer. Sept. 54 5h, 59°-8 ; 54 7h. 60°5; 204 5h, 62°-4; 204 7h, 63°-0; 204 20h, 50°4; 204 23h, 52°-3; 214 Oh, 586; 214 5h, 61°-4; 214 7h, 60°0; 214 104, 57°8; Oct. 174 54, 51°0; i7a 6h, 5O°8 ; 174 204, 46°°5 ; 174 23h, 46°-0; 184 0b, 49°-3; 184 1, } 55°°1 ; 184 2h, 57°4; 184 Bh, 592; 184 Hh, 57° *5; Nov. 34 5h, 57°. 7# 34 Sn, 56° 2; 54 Qn, 54°°5 ; 54 5h, 55°. 3; 5a 6h 30™, 55°9 ; 94 20h, | 48°4 ; 94 21», 48°-4 ; 94 23h, 48°-5 ; 104 Oh, 51°-2; 104 1 30m, 54°1; 104 2h, 54° 4; 164 3h, 54° 1; 104 5h, 55° 5; 104 6b, 54°5. Balance Thermometer. Sept. 5a Dh) 58°-9 g)s 5a 74, 59°-0 ; 204 5h, 60°-4; 202 72, "60°: 0; 204 20, 50°8; 204 23, 52°-6 ; 214 2h, §8°1; 214 5h, 60°4; 214 7h, 60°8; 214 10h, B79 ; Oct. 174 54, "50°-6 ; 174 6b, 50°5 ; 174 200, 46°°9 ; ‘174 23h, 46°-4; 184 0b, "49° 6; ‘1ga ]h, 56°-2 ; 184 an, 57°°9 ; ga 3h, 59°°6 ; 184 5h, 57° °6; Nov. 3¢ 5h, 57°°8 ; 34 8b 57°-6; 54 Qh, 55 8; 54 5h, 56° 8; 5a Gh 30™, 61°-0 ; 94 20h, Boa “1 Pane 50°8 ; 94 23h, 50°3; 104 Oh, 53°4 ; 1o@ yh 30m, 55° ; 104 2h, 554; LO 3h, 55°7 ; 104 3h ’50m, 57°-6; 104 5h, 56°°7; 60 EXTRA OBSERVATIONS OF MAGNETOMETERS, NOVEMBER 10—DECEMBER 17. 1842. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. Pa oe Min. Reading Min. Reading Min.| Reading e ene Min. Reading Min.| Reading | Min.| Reading of Reakie Ba, of Cor- of Cor- of Rediced: of Cor- of Cor- Obs. | Obs.) rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. d. oh. || m. , m. | Sc. Div. || m. | Mie. Div. ah. || m. ! m. | Sc. Div. || m. | Mic. Diy. Nov. 10 20 0 132-64 2 521-9 Dee. 9 4 58 , 755 || 30 131-92 || 32 535-7 34 719 Dee. 9 5 0) 125-45 2 539-4 Nov. 10 22 | 58 755 18 125-75 || 20 531-4 22 765 Nov. 10 23 0 126-70 | 2 530-3 24 125-02 || 26 538-0 28 768 Nov. 11 1 32 532-5 33 ia2 4 30 125-02 || 32 538-0 34 783 58 750 | 36 122-53 || 38 539-6 40 800 Nov. 11 2 0 130-50 2 539-9 | 42 118-23 || 44 550-8 46 813 58 754 48 112-53 || 50 553-0 52 796 Noy. 11 3 0 128-37 2 540-7 54 109-58 || 56 544-3 58 775 41 541-2 40 766 Dec. 9 6 0 112-13 2) 542-6 4 768 6 116-08 8 544-1 10 765 Nov. 19 3 || 30 127-57 || 32 545-0 34 719 2 120-65 14 | 541-3 16 769 Nov. 19 4 0 127-35 2 546-6 4 rele 18 125-88 || 20 536-5 22 789 30 126-82 || 32 | 546.0 34 719 24 120-45 || 26 544-9 28 781 |} Nov. 19 6 0 127-00 2} 550-3 4 dle 30 L2737 | S2 535-7 34 785- 42 125-85 || 44 551-8 46 707 36 129-52 || 38 529-7 40 802 Nov. 19 7 0 126-02 2 550-9 4 704 42 128-43 || 44 533-2 46 819 24. 125-88 || 26 549-7 28 704 48 125-15 || 50 541-2 || 52 841 54 125-33 || 56 550-6 58 704 54 122-60 || 56 537-6 58 868 = Dec. 9 7 0 119-58 2 533-6 4 890 Nov. 21 19 | 58 647 6 110-12 8 530-9 10 863 Nov. 21 20 0 127-94 2} 500-2 12 112-13 || 14 534-7 16 841 18 137-50 || 14 502-5 16 669 18 113-47 || 20 525-8 22 837 30 139-58 || 32 | 507-3 34 693 24 113-27 || 26 533-5 28 820 48 140-98 || 44 | 516-9 46 694 30 116-08 || 32 525-1 34 818 Nov. 21 21 4 137-43 2 621-2 0 721 36 115-28 || 38 527-2 40 831 7 18 135-33 16 | 527-8 20 740 42 112-13 || 44 542-2 46 831 Nove 22) 58 807 48 121-05 || 50 527-6 52 843 Nov. 22 2 0 130-72 2 | 528-7 54 118-10 || 56 520-6 58 847 54 126-08 || 56 543-9 58 871 Dec. 9 8 0 113-47 2 530-8 4 834 Nov. 22 3 0 129-72 2) 545-1 4 872 6 121-05 8 527-5 10 835 6 130:32 8 545-6 24 136-22 | 26 510-4 28 876 42 129-98 || 44 041-2 40 862 30 127-30 || 32 | 530-4 34 896 Nov. 22 4 58 829 36 113-60 | 38 527-4 40 846 Noy. 22 5 0 127-63 2 539-6 42 118-10 || 44 536.4 46 819 Dec. 5 19 58 Til Dec. 17 1 58 711 Dec. 5 20 0 129-55 | 2} 5345 |] Dec. 17 2 0 126-55 ey 550-7 20 | 547-6 || 22 697 Dee. 17 3 || 30 125-52 || 32 | 549-1 34 fA2 24 128-97 || 26 554°8 28 691 Deen 174 0 125-43 2 548-7 4 709 30 130-12 || 32 553-2 34 688 18 126-32 || 20 549-0 22 709 36 129-72 || 38 558-1 40 685 42 124-92 || 44 550-1 46 707 | Dec. 5 20 || 42 129-03 || 44 557-0 46 681 Dec. 17 5 0 125-35 2 549-4 4 704 48 128-37 || 50 556-5 52 680 24 125-05 || 26 549-2 28 695 54 128-37 || 56 Se ||! ts) 686 Bifilar Thermometer. Nov. 104 208, 49°4; 104 23, 502; 114 14 30m, 57°-8; 114 2h, 578; 114 3h, 58°2; 194 Qh 51°9; 194 Hh, 57°; 194 8h, 586; 214 2Oh, 43°-4; Qld Q1h, 44%5; QOd Qh 50-8; 224 Zh, 52-1; 29a Bh 45m, 537-2; 22d 5h, 51-9; Dec. 54 20h, 52°8 ; 5a 21h, 52°9; 94 5b, 563; 94 Gh, 56%4; 94 7h, 56°B; 94 Sh, 56°9; 174 2h, 565 ; 174 5b, 578, Balance Thermometer. Nov. 104 204, 50°6; 104 23%, 51°3; 114 1h 30m, 59°6; 114 2h, 59°2; 114 3h, 59°5; 194 2h, 52°9; 194 5h, | 58°-5; 194 Sh, G01; 214 20h, 45°1; 214 Qh, 47°-3; 2a Qh, 59-3; 224 Zh, H3°-B; 2A Bh 45m, 54°-2; 20a Hh, 53%6; Dec. 54 20h, 54°1 54 Q1h, 542; 94 Hb, 57°3; 94 Gh, 575; Qa 7h, 57°Bs 94 Sb, 58°O; 174 Qh, 582; 174 5h, 598, . ? OBSERVATIONS OF MAGNETIC DIP. 1841 anp 1842. MAG. OBS. VOL. I. 62 Gottingen Duta: Mean Time, mon Thermo- ae ie sae at of Ohser meter. Nadia. servations. ation id. ph an. m. e 1841. Apr. 29 July 7 1 O 61-0 1 July 20 6 0 2; July 20 7 10 60-0 1 Sept. 6 6 5 1 Sept. 6 6 55 2 Sept.14 5 0 69-0 1 Sept.14 5 45 69-0 2 Sept. 27 20 20 55-0 1 Oct. 4 20 40 55-0 1 Oct. 8 5 15 56-5 1 Oct. 11 20 20 45-5 1 Oct. 15 5 10 48-0 1 Oct. 18 20 20 38-0 1 Oct. 22 5 15 48-0 1 Oct. 25 20 20 40-0 1 Oct. 29 5 20 52:6 1 Nov. 1 20 15 37-0 1 Nov. 5 5 10 50-0 1 Nov. 8 20 15 49-6 1 Noy. 12 5 20 44-5 1 Noy. 15 20 20 28-5 1 Nov. 19 5 10 45-0 1 Nov. 22 20 20 36:3 1 Nov. 26 6 45 1 Nov. 29 20 20 45-0 1 Dec. 28 2 O 1 Dec. 28 23 0 2 Dec. 29 0 10 1842. Jan. 14 5 10 47-0 1 Jan. 17 20 20 38-0 1 Jan. 24 20 10 39-0 1 Jan. 28 5 10 51-0 1 Jan. 31 20 15 45-0 1 Feb. 4 5 10 53-0 1 Feb. 7 20 20 45-0 1 Feb. 11 5 15 53-0 1 Feb. 14 20 25 51-0 1 Feb.18 5 15 56-0 1 Feb. 21 20 20 40-0 1 Feb. 25 5 20 49-0 1 Mar. 4 5 20 55-0 1 Mar. 7 20 15 49.0 1 Mar.11 5 20 53-0 1 Mar. 14 20 30 50-0 1 MEAN OF READINGS. End A. North. ° , End B. North. ° ’ 16-25 25-37 17-75 22-62 22-00 24-62 26:37 30-00 26-00 10-88 17-00 25-62 17-75 33-00 30-62 17-62 11-62 20-00 25-50 22-62 22-88 22-50 20-50 23-88 26-88 23-78 26-50 21-37 21-25 18-62 23-75 A. North Minus B. North. + 6-63 + an we oo oo 6-50 2-25 1-26 5:87 8-75 F-12 3-24 3-24 0-84 1-50 5-63 5-37 9-88 2-75 t+t+ i t+t++++4i+ Observed Dip. 20-94 19-31 23-25 24-38 23-25 25-81 26-88 24-06 25:50 28-50 24-20 25-75 24-19 23-94 23-56 25-12 OBSERVATIONS OF MAGNETIC Dip, APRIL 29. 1841—Marcu 14. 1842. REMARKS. Unsatisfactory observation. Instrument out of adjustment. Observers, Professor Forbes and Mr. Russell. continually getting into contact with limb. yen observation ; unsatisfactory. Needle Observers, Mr. Main and Mr. Russell. This and the two following observations made by Professor Forbes. A small knife in the observer’s pocket while observing B. North. —— Gottingen Mean Time, | Commencement of Observations. Mar. | Mar. Mar. Mar. Apr. Apr. ; } | une { June ; June | June \July iJ uly July | 10 13 20 20 21 qn 40 20 15 45 15 30 20 Dura- tion of Obser- vation. m. 65 160 100 120 120 90 75 100 OBSERVATIONS OF MAGNETIC Dip, MArcu 18—Juty 8. 1842. Thermo- meter. 61-4 57:0 47-2 63-1 595-0 57-0 55:0 55:5 69-0 59°5 65-6 65-0 61-0 60-0 65:5 56:0 67-3 60-5 61-7 ——_— No. of Needle. a eee —" ay ee MEAN OF READINGS. 71 32-37| 71 25-87 28-25 18-37 23-87 29-50 21-87 31-12 17-25 25-62 24-87 15-00 25-87 31-75 30-25 16-12 15-62 15-50 37-88 32-88 12-00 8-75 32-62 16-12 71 33-12) 71 14-00 38-00 33-88 38-50 36-00 40-38 38-50 71 71 71 71 71 al 7-88 12-50 12-75 12-37 16-12 15-00 A. North Minus B. North. 0-25 8-50 6-50 + 19-12 + 30-12 + 21-38 + 25-75 + 23-63 + 24-26 + 23-50 Observed Dip. 29.12 23-31 20-56 27-56 23-37 23-06 20-37 23-69 22-87 24-94. 20-81 24-37 23-56 22-94 23-19 25-56 24-19 28°25 26-75 63 REMARKS. This and the previous observations, with the { exceptions noted, were made by Mr, Russell. This and the following observations were \ made by me. J. A. B. i is possible that in some of the readings for this observation the divisions of the limb had been taken for 5‘ instead of 10’. Levelled the agate planes, care being taken that the glass door was shut, as in shutting it exerts a pressure on the bottom of the box. hes great care and much time was bestowed on this observation, it can hardly be considered good, very different readings being obtained after repeatedly lifting the needle on the Y’s. Level of agate planes verified. is this observation the needle was placed carefully on the agates, lifted by the Y’s, gently let down and allowed to vibrate through about 10° ; then, when at rest, read. This observation made in the same way as last. Level of agates verified, The observations of June 34 were made in order to determine the effect, on the final result, of lifting the needle on the Y’s one, two, or three times. See Note below. While changing the poles the needle fell upon the carpet from a height of about two feet. This result obtained in the same way as the 1 second result, June 34, Id. In some of the readings the needle had to be lifted frequently before a satisfactory obser- vation could be made. Allowing the needle to vibrate through 10° has not been found satisfactory. The needle is now checked near its supposed position of rest, and is lifted and lowered by the Y’s till satisfied that lifting does not alter the reading. Great care taken with this observation. June 34. The needle was checked so as to allow it, when lowered on the agates, to vibrate through 10°. After coming to rest the position jwas read. The first result, June 34, was obtained from the readings made in this way. After each of the readings for the first result, the needle was lifted by the Y’s and lowered gently (the arc of vibration being small) and again read ;—these readings give the second result. The needle | being lifted, &c., as in the second case, a third result was obtained. 64 Gottingen Mean Time, Commencement of Observations. July 11 20 45 July 15 7 10 July 18 20 40 July 22 6 20 July 25 21 10 July 29 6 50 Aug. 1 20 40 Aug. 29 20 30 OBSERVATIONS OF MaGnetic Dip, Juty 11—DrcemsBer 30. 1842. 105 66-5 63-2 62-5 60-8 63-0 ae DOR eS — = 5 el ce eel cee ee cee el cee ee — —_ a ol MEAN OF READINGS. End A. North. 40-00 33-38 37-50 33-50 15-12 41-38 45-75 24-38 32-50 28-88 44-00 27-50 35-62 36-00 35-00 33-62 36-12 37:88 36-38 36-38 36-12 35-75 33-88 33-00 32-75 34-88 34-00 35-38 33-25 32-25 32-38 30-75 34-62 25-88 32-75 31-75 35-62 35-75 31-62 32-50 29-12 12-75 18-25 14-50 13-00 13-25 12-38 12-12 11-62 15-25 13-00 11-37 11-62 11-25 12-00 9-75 10-62 13-50 11-88 10-12 9-62 5:50 8-25 7-12 9-12 8-75 10-25 9-88 11-62 7:88 11-25 A. North Minus B. North. + 26-88 + 18-76 + 25-00 + 18-62 — 25-50 + 29-00 + 33-87 — 12-74 + 9-75 + 5-13 + 28-12 +14-75 + 17-37 + 21-50 + 22-00 + 20-37 + 23-74 + 25-76 + 24-76 421-13 | + 23-12 + 24-38 + 22-26 + 21-75 + 20-75 + 25-13 + 23-38 + 21-88 + 21-37 + 22-13 + 22-76 + 25-25 + 25-37 + 18-76 + 23-63 + 23-00 4+ 24.37 + 25-87 + 20-00 + 25-62 + 17-87 Observed Dip. 20-12 26-94 25-25 24-00 23-44 24-25 25-00 24-00 25-81 24-56 23-56 22.55 22-12 22-38 22-31 22-31 24-44 22-56 21-17 21-00 18-12 21-44 16-50 20-94 20-25 22-94 22-81 21-62 20-19 20-19 REMARKS. Needle No, 2 taken by mistake. This observation is not considered good, though much time was bestowed on it. Owing to the bad balance of the needle, or the action} of the lifter, no reading was considered per- fectly satisfactory. This observation is scarcely worth — No reading could be obtained, after lifting} and lowering the needle, the same as before.} The greatest care was taken, and the read-] ings, in each position, made from 6 to 10} times before one was adopted, Considered a good observation, though made} ' in a comparatively short time. sidered very good,—none of them were| All the observations since August 29, are con- hurried. , In changing the poles the needle received, by mistake, 10 strokes instead of 8 on each side. This observation made by candle light, and is} not considered so good as the others. | Observation not quite satisfactory. nstrument levelled. A considerable change Coe place in the readings on this occasion compared with those in the same positions | previously, Good observation. Good observation. Considered a fair observation. Good observation. Fair observation. Good observation. Good observation. Observed by Mr. Welsh. OBSERVATION OF ABSOLUTE HORIZONTAL INTENSITY. Marcu 26. 1842. MAG. AND MET. OBS. VOL. I. 66 OBSERVATION OF ABSOLUTE HorRIZONTAL INTENSITY, Marcu 26. 1842. OBSERVATIONS OF DEFLECTION. BIFILAR MaG- OBSERVATIONS OF VIBRATION. BIFILAR MAGNETOMETER. NETOMETER. 60 60 Time of Ther- N of Mean Read- |Thermo-| 8. End Vibra- S. End Vibra- || Obser- | Read- |mome- Distance. | 5, a. Suspended Deflection. ings. | meter.| Moving W. | tions. | Moving E. tions. vation. ings. | ter. Magnet. Ft. Se. Div. Se. Div. Se. Div. - h. m. re m. 8. h. m. S. iO.) h. m. s. | Se. Div. 5.25 W W 36-61 212-37 153-9 | 54-0 3 16 33-0 3 16 49-0 3 18 30] 161-5 56.0 E. 461-34 150-3 | 54-4 21 35-4 21 51-0 21 0O| 166-6,| 56-0 8-50 W E. 308-13 60-57 156-2 | 55-2 26 37-3 26 53-0 23 30| 166-8 | 56-0 W. | 186-98 149.2 | 54:8 31 39-4/15 6-4 31 55-:3|)15 6-3 26 0] 166-0 | 56-0 8.50 E E. 307-09 59-87 151-2 | 55-8 36 41-6) 15 6-2 36 57-4|15 6-4 28 30] 164-5 | 55-9 WwW 187-35 152.3 | 56-0 41 43-6|15 6-3 41 59-4/15 6-4 31 0) 162-3 | 55-9 5.95 E W 35-45 211-61 151-3 | 56-2 46 45-9|15 6-5 47 1-6/15 6-3 33 30) 162-2 | 55-8 ; E 458-68 153-1 | 56-3 36 0| 159-5 | 55-7 38 30] 160-0 | 55-7 41 0| 160-4 | 55-6 43 30| 158-7 | 55-5 46 0)| 156-4 | 55-4 r = 5-25 feet. Mean deflection 211-99 Sc. Div. wu =2° 22’ 14”.7 Gh SQAHO sce f | Mwaisteecee ve cacicinaero 6022” ccccennce u'=0° 40’ 24”.4 Observed mean time of one vibration, T’ = 15°-1058. j div. Mean Bifilar, ees \ during deflections, | oe 5 \ Reading corrected, 523-8" : diy. . Mean Bifilar, Viner. during vibrations, | ariet \ Reading corrected, 534.8%" Difference of Bifilar readings during deflections and vibrations corrected = 4 Amal 1-0 Se. div. = -00137 in parts of force. == 0-000994. (See Introduction for value of = March 3. 1842.) Semi are a iene a of vibrations, tee ra Length, a = 1-25 feet, Deflecting bar, < Breadth, b =0-0719 feet, Weight, W = 6216-7 grains. From the formule below there has been obtained X = 2-9662. 2. 42 Moment of inertia K = % a2 W. Tr(a ea = <==) = T, time of vibration corrected. r ome (1 ses S ils = =m X at the period of deflections. x m 5 a Gi+%). ae r? tan u m —r*) Toes The hours of the deflection observations have not been registered. The arcs of vibration were not registered. The above have been estimated from a remembrance that Mr. Russell used rather large ares of vibration, and from other considerations. The times of vibration were obtained from the clock in the observatory ; the rate is not registered, but it was generally very small. The notation and formule above are those used in the Report of the Royal Society. DAILY METEOROLOGICAL OBSERVATIONS. 1841 anp 1842. 68 DatLty METEOROLOGICAL OBSERVATIONS, JuLY 11—Aveust 5. 1841. Gottingen Banos THERMOMETERS. aaa METER Max, | SAUe2 STATE OF THE SKY. ‘ Corrected. || Dry. Wet. 2 B. Observation. i ry F and Min. ° ° ° id, he in. July 11 20 | 29-290 | ...... | -... 23 1/21 al ee Lae Daal, U2 iO CeO Pee ce Weauere Bell OOBOG. lhsckecn |, eee 20 || 29-365 | 51-4) 48-9 | 63-1 23 | 29-381 | 55-7 | 50-2) 46-3 || 0.02 July 13 2 | 29-396 | 55-5 | 49-7 5 || 29-393 | 56.4 | 51-3 20 || 29-426 | 52-6 | 51-5 | 57-6 23 || 29-400 | 56-6 | 52-3 | 49-9 || 0-35 July 14 2 || 29-414 ] 58-5 | 544 5 | 29-416 | 55-9 | 53.4 20 || 29-431 53-2 | 51-8 | 59-0 23 | 29-453 | 53-3 | 52-5 | 50-1 || 0-54 July 15 2 | 29-503 | 56-8 | 53-6 5 || 29-550 || 58-4 | 53-9 20 || 29-770 || 48-7 | 45-6 | 59-9 23 || 29-785 || 52-7 | 47-6 | 47-8 | 0-04 July 16 2 || 29-758 || 58-1 | 51-7 5 || 29-740 | 60-8 | 54-7 23 || 29-637 | 59-3 | 51-0 | 42-2 | 0-00 July 17 2 || 29-683 || 62-0 | 55-4 Sitly! 1S 20h) ase ce sea eeexaenlies sass 65-7 23 || 29-552 || 62-2 | 56-1 | 53-2 || 0-02 July 19 2 || 29-535 | 67-4 | 58-0 23 | 29-344 || 60-5 | 56-0 | 45-5 || 0-20 July 20 2 || 29-266 || 61-5 | 54.4 23 || 29-176 || 56-2 | 53-9 | 52-5 || 0.47 July 21 2 || 29-184 | 58-8 | 54-2 23 || 29-401 || 53-7 | 50-6 | 48-6?! 0-00 July 22 2) 29-462 | 56-5 | 52-4 23 || 29-728 | 52-2 | 50-3 | 51-3 || 0-01 July 23 2 || 29-779 | 53-2 | 51-4 Aug. 4 20 || 29-372 || 51-7 | 50-7 | 63-9 Rain. 23 || 29-308 || 55-5 | 54-4 | 49-5 } 0-27 || Id. Aug. 5 2 || 29-237 60:8 | 58-1 Cloudy. 5 || 29-140 | 63-2 | 60-2 Heavy rain. The maximum and minimum temperatures given, with exceptions noted, are the greatest and least which have occurred since the previous observation. The register thermometers were read between 20" and 234, The quantity of rain is always the quantity fallen since the previous observation. The gauge was read at 1}. Aug. 44 214, The maximum and minimum temperatures given are supposed to be those of the preceding 24 hours. Dairy METEOROLOGICAL OBSERVATIONS, AuGusT 5—20. 1841. 69 Gottingen Mean Time of Observation. Aug. 10 2 Aug. 11 2 Aug. 12 2 Aug. 13 2 Aug. 14 2 Aug. 15 20 Aug. 16 2 aug. 17 2 Aug. 18 2 Aug. 19 2 Aug. 20 2 BaRo- METER Corrected. in. 29-104 29-180 29-269 29-336 29-449 29-459 29-461 29-439 THERMOMETERS. Dry. Wet. Cael 58-3 | 56-5 | 63-5 57-5 54-4 54-2 59-1 54-7 56-7 | 52-8 57-2 | 54-7 | 59.4 62:9 | 584 | 48-5 59-8 | 57-1 62-4 | 58-2 55-2 | 52-1 64-2 58-4 | 53-2 | 45-6 58-1 53-9 57-5 | 51-2 sieletatnath{| tatotatorere 59-9 56-3 | 51-9 | 47-5 57:8 | 51-9 58-8 | 53-4 48-0 | 45-7 | 59-1 54-7 | 51-8 | 40-7 54-7 | 51-7 54-7 | 50-8 52-4 | 46-6 | 55-1 55-7 | 48-7 | 43.4 58:5 | 50-7 57-2 | 50-8 47-5 | 45-4 | 59.3 59-5 | 54-6 | 37-3 59-0 | 55-0 56-9 | 55-1 54-4 | 53-2 | 63-2 55-9 | 55-1 52-4 57-4 | 56-0 57:0 | 55-9 51-2 | 50-0 | 66-7 61-1 | 58-3 | 44.0 67-0 | 62-1 64°5 | 59-7 58-8 | 56-9 | 67-3 58-4 | 52-9 | 55-1 60-0 | 52-5 60-0 | 51:4 49-6 | 47-5 | 61-1 61-0 56-4 40-0 61-4 54:8 61-1 55-2 55-8 | 52-6 | 63-0 62-3 Bo for aN neo 63-4 | 60-1 60-8 | 59-0 | 67-1 62-5 58-6 54-0 69-4 61-2 70-4 | 62-4 0-00 0-64 0:01 0:00 0-00 0-00 0-37 0-33 0-00 0-00 0:00 0-00 STATE OF THE SKY. Cloudy. Id. : light rain. Id.: sunshine at intervals, Id. Fair: wind WSW. Id.: wind WSW. Thick clouds: wind S. Fair: wind SW. Fair. Fine and clear; heavy showers at intervals. Cloudy. Cloudy. Id. Id.: high wind Id. : id. Fine and clear. Cloudy. Heavy clouds: light rain. Rain. Id. Clouds breaking. Heavy rain. Id. Fair but cloudy. Light rain. Fair. Id. Id.: fresh breeze. Fair. Id. Id. Id. Fair and clear. Fair: cloudy. Heavy clouds. Fair: hazy. Id.: id. Tides) id: Id.: cloudy. MAG. AND MET, OBS. VOL. I, 70 DaILy METEOROLOGICAL OBSERVATIONS, AUGUST 20—SEPTEMBER 6. 1841. Gottingen Baio. THERMOMETERS. Rien ee iva METER | |__| way, || CAUSE STATE OF THE Sky. Observation. Comme cet ol Diy | wee. and Min. = Gh In in. 2 2 in. Aug. 20 20 || 29-450 | 53-3 | 52-1 | 71-5 Rain. 23 || 29-409 | 51-6 | 50-8 | 51-3 || 0-46 || Very heavy rain: thunder. 29-372 | 55-3 | 53-7 Drizzling rain. 29-347 || 53-3 | 52-1 Id. 29:420 || 52-8 | 50-0 | 63-2 Fair. 29-467 || 57-9 |-52-0 | 47-5 || 0-46 | Id. 29-525 || 58-6 | 51-7 Id. 29-583 || 59-2 | 52-9 Id. 29-817 || 49-4 | 48-1 | 60-4 Light rain. 29-847 || 53-8 | 50-3 | 42-4 || 0-02 || Cloudy. 29-836 || 56-4 | 52-5 Fair but cloudy. 29-838 | 57-8 | 53-7 Fair and clear. 29-686 || 56-7 | 55-0 | 60-1 Fair : nimbi to W.: cumuli to E. 29-662 || 62-5 | 59-0 | 50-1 || 0-17 || Heavy cumuli approaching to nimbi. 29-723 || 66-3 | 60-5 Dense scud : gleams of sunshine. 29-737 || 65-0 | 60-9 Cumuli ; seud. 29-722 || 61-8 | 60-2 | 67-3 Light rain : seud : wind. 29-740 || 65-8 | 62-8 | 55-6 || 0-00 || Heavy cumuli. 29.847 || 65-0 | 62-4 Heavy cumuli and scud. 29-894 || 64-9 | 60-6 Cumuli: fair. 29-916 || 59-6 | 57-0 | 67-2 Cumuli. 29-910 || 61-8 | 59:3 | 56-8 || 0-01 Id. 29-899 || 65-5 | 60-6 Id. : wind. 29-836 || 63-7 | 58-9 Id.: id. 29-845 || 58-2 | 56-8 | «--.-. Overcast : light rain : gleams of sunshine. 29-861 || 62-1 | 57-3 | «-.+- 0-00 Id.: heavy cum. : light wind. 29-833 || 64-2 | 56.4 Fair : scattered cum. : light breeze. 29-846 || 64-0 | 56-6 Id. : id. : occasional gusts of wind. 29-663 || 43-6 | 42-6 | 55-8 Fair : cumuli on horizon : heavy dew. 29-647 || 57-0 | 53-0 | 37-4 || 0-50 | Id. : clouds rising: misty : solar halo at 225, 29-625 | 59-3 | 54-6 Sky much overcast : dark cumuli: wind rising. 29-586 || 56-9 | 51-5 Sky almost covered. with dark clouds : wind high. 29-464 54-3 | 50-7 | 59-6 Fair : cum.-str. on horizon : cir.-haze above. 29-434 | 59-8 | 54-8 | 51-2 || 0-00 || Id.: sky much overcast : cum.-str. on hor. : wind very high. 29-386 || 61-6 | 55-6 Sky much overcast with heavy cum : wind high. 29-384 || 60-3 | 54-7 Overcast : dark cum.: brighter to W.: wind very high. 29-468 || 49-7 | 48-8 | 62-5 Overcast : cum. in zenith: cum.-str. on horizon. eee E al memes tt wc 47-1 || 0-00 29-460 || 46-4 | 45-0 | 59-3 Sky quite overcast : heavy rain. 29-456 || 45-9 | 43-8 | 45-4 || 0-13 id. id. 29-490 | 45-1] 43-8 Overcast : steady rain : clearing to NW. 29-482 || 45-5 | 43-9 Clouds more broken up : gleams of sunshine. 29.564 || 40-5 | 39-2 | 55-6 Fine : cum. generally : cum.-str.on E. hor: clear to NW. 99.553 51-5 47-6 35-1 Q-13 || Overcast from N. to zen.: light rain: cum.-str,on N. hor.: broken to S.: gleams of sunshine. 29-538 || 55-3 | 51-0 Generally overcast: clouds broken : cum.: clearing on N. hor, 29-491 | 56-9 | 52.0 Clear to N. : detached and scattered cum. : cir.-cum. Aug. 314, The maximum and minimum here given are supposed to be those of the 31%. In cases of omission Mr. Russell does not mention when the register thermometers are set. Gottingen Mean Time Observation. Sept. Sept. Sept. Sept. Sept. ] Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Daity METEOROLOGICAL OBSERVATIONS, SEPTEMBER 6—20. 1841. 71 BARo- METER of in. 29-480 29-448 29-375 29-304 29-307 29-355 29-413 29-522 29-762 29-720 29-693 29-650 29-623 29-621 29-592 Corrected. THERMOMETERS. Max. * Jand Min. 57.3 35:5 STATE OF THE SKY. Fine : cir., cir.-str. : cum. to SW.: clear to EK. and N. Much overcast : heavy cum.: bright gleams of sunshine. Sky quite overcast with heavy cumuli. Still overcast : clouds more broken: cum., cum.-str. on hor. Unbroken clouds : light rain. Still overcast : clouds broken : light rain. Id. : id. : id. Id. : clouds less broken : fair. Thick fog. Much overcast: cum. : gleams of sunshine. Quite overcast, with almost unbroken clouds : light rain. Id. : id. : id. Fair: sky covered with detached cum.: cum.-str. on hor. Quite overcast with cum.: cum.-str. on SW. hor. Sky covered with unbroken clouds: rain. Id. : id. : cum to 8.: clear in zen. : cir.-str. to N. and E. cum. generally : cir.-str. sky covered with broken clouds. : clear : cirri. id.: id. iday) ide TES) ate. Fine and clear: a few cum. on hor.: cir. here and there. Almost clear : a few cum.: strong breeze. Many cumuli: strong breeze. Id. : wind abated. Fine and clear : cir., cir.-cum. Fair, cumuli, cirri. Id., cum. : storm passed off to NE. : dense clouds still seen there. Id., id: occasional thunder in horizon. Fog ; apparently clear above. Fine and clear: a few cum. on hor. Fine : many cumuli. Clear : cum.-str. on hor. Thick fog. Id. Sky overcast: misty. Id. Thick fog. Fine : fog clearing off: cumuli. Id. : cumuli: cum.-str. on hor. Id.: id.: cir.-cum. Quite overcast. Overcast: heavy dark clouds. Id. : id. id. : wind rising. 12 DaiLty METEOROLOGICAL OBSERVATIONS, SEPTEMBER 20—OcTOBER 9. 1841. Gottingen Baro- Mean Time Observation. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Sept. Oct. Oct. METER of Corrected. dh. in. 20 20 | 30-021 32 | 30-006 21 29-947 29-897 29-688 29-662 29-598 29-530 28-883 28-857 28-886 28-930 28-736 28-733 28-669 28-752 29-033 29-083 29-129 29-206 29-408 29-432 29-454 29-458 THERMOMETERS, Max. * land Min. 58-9 45:8 STATE OF THE SKY. Fine and generally clear : cumuli. Much overcast : heavy dark clouds. Fine: many cum.: wind rather high. | Id.: cum.: cum.-str. Much overcast : cum.: wind. Id. : TOs ade Quite overcast : id. Id: less wind. Overcast, Id. Id.: light rain: cum.: scud. Clearer sky: cum. : cir. Quite overcast : light rain. Unbroken clouds: heavy rain. Ibs light rain. Overcast : rain. Tas id. Clouds more broken: cum.: scud. Td: id. Fog. Id. Still foggy : sun breaking through. Fine and clear : cirri. [from NE. Heavy clouds to 8. (windward) : cir. : cir.-cum. to N.: cir.-str. Scattered cum. : strong breeze: sunshine. Cum. : varieties of cir.: cir.-cum. : cir.-str. : sunshine: wind. Much overcast: clouds broken to W.: gleams of sunshine. Quite overcast : heavy rain : high wind. Clearer to S.: cum.: nimb. to N.: sunshine: wind. Overcast : rain and wind, Sky more open: heavy clouds to S. : wind. Overcast : light rain. More open : scattered cum. : sunshine. Id., but wild : scattered cum. : cum.-str. on hor. : wind. As before: heavy clouds to W. Heavy rain: wind. Id. : id. Id. : id. Overcast : fair : wind not so high. Rather open to N.: cir.-cum.: dense clouds to S. Overcast : wind: rain. Heavy clouds to 8.: a little broken to N.: gleams of sunshine. Quite overcast. Overcast : cum.-str. on hor. : calm. Thick scud in zen. : clear elsewhere : cum.-str. on hor. Cloudy : cumuli. Gl 3 id. Oct. 64. The maximum and minimum are supposed to be those of the preceding 24 hours. See note on the quantity of rain, page 68. Daity METEOROLOGICAL OBSERVATIONS, OcTOBER 10—23. 1841. 73 Gottingen yee THERMOMETERS. rare a. METER Max. GAUGE STATE OF THE SKY. Observation. Perneeseda Dry. Wet. |andMin. = taahe in. ° o ) in, Oct. 10 20 || 29-111 || 47-1 | 43-8 | 54-9 Clear: cir. : dark heavy clouds on NE. hor. 23 || 29-148 || 50-1 | 45-5 | 41-7 || 0-07 || Clear: a few cumuli: wind. Oct. 11 2 || 29-150 || 53-1 | 47-5 Fair: cumuli : cir.-cum. 5 29-050 50-9 | 48-8 Overcast. 20 || 29-026 || 37-1 | 36-9 | 53-5 Fair : cirri : cum. on E. horizon. 23 || 29-032 || 44-4 | 43-0] 35-3 || 0-05 || Id.: overcast. Oct. 12 2 | 29-070 || 51-0 | 48-8 A good deal overcast : sun between broken clouds. 5 | 29-131 || 51-9 | 48-5 Cumuli: heavy dark clouds to W. 20 || 29-511 || 42:0 | 38:9 | 53-5 Cumuli: dark clouds to SE. 23 || 29-639 || 43-2 | 39-8 | 36-1 || 0-00 || Clear to W.: cum to E.: calm. Oct. 13 2 || 29-633 || 45-8 | 41-7 Overcast: cir.-str. : cumuli on hor. 5 || 29-638 || 44-8 | 41-8 Overcast: rain. 20 || 29-293 50-0 | 48-8 | 55-9 Overcast: dark clouds to eastward. 23 || 29-295 || 55-0 | 51-0 | 42-4 | 0-16 || Clear in zenith: cum. to W.: heavy clouds to E. Oct. 14 2 || 29.282 | 52.9 | 50-1 Sunshine : cloudy to eastward. 5 || 29-261 || 53-0 | 49-9 Overcast: rain: heavy clouds to W. 20 | 29-053 || 48-0 | 47-1 | 55-3 Overcast : rain. 23 29-197 46:0 | 44-3 39-4 0:26 Id. Oct. 15 2] 29-321 || 44-8 | 42-4 Id.: rain: wind NW. 5 || 29-397 || 43-4 | 41-8 Id.: breaking to westward. 20 || 29-173 | 41-0 | 40-0 | 49.0 Id; rain. 23 || 29-068 || 41-2 | 39-9 | 39-2] 0-21 liek 2 id. Oct. 16 2] 29.010 | 42-8 | 41-7 Id.: id. 5 || 29-120 | 43-2 | 41-7 Id: id. Oct. 17 20 || 29-281 || 40-2 | 37-5 | 53-5 Fair and clear: cir. : cum. on hor. 23 29-435 40-9 | 38-2 | 37-7 0-20 IGE 2 cir.-str. Oct. 18 2 || 29-510 |) 44-2 | 38-3 Zenith clear: cum. on horizon. : 5 || 29.499 || 42-7 | 38-7 Id. : cir.-str. 90 || 29.457 || 32-7 | 32-2 | 53-5 Fine and clear: frost. 23 29-444 || 43-5 | 40-9 | 30-8 0:00 || Fair: cirri: cir.-str. Oct. 19 2 || 29-405 || 47-6 | 44-5 Nimbus: shower of rain: cirri. 5 | 29-441 || 46-6 | 43-7 Heavy clouds, sun between. 20 || 29-300 || 45-2 | 42-7 | 53-1 Overcast : broken to eastward. 23 || 29.225 || 48.6 | 45-4 | 42-3 ] 0-00 || Heavy cumuli: sunshine: wind. Oct. 20 2) 29-135 || 48-1 | 45-2 Overcast. 5 29-027 45-6 | 43-7 Id. 20 || 29-456 || 33-7 | 31-1 | 49-5 Fair: cumuli. 23 || 29-561 37.2 | 34:0 | 32-0 || 0-20 || Id.: clear. Oct 21 2 29-628 41-0 | 37-0 Id.: id. 5 29-682 39-6 | 36-8 Id.: cir. and cir.-str, CY dl arene aetna | ESE me ay eee Ree 42.0 23 || 29-791 37-2 | 35-8 | 30-0 || 0-00 || Overcast: cum.-str. on E. hor. Oct. 22 2) 29-712 || 44-8 | 41-8 Id. : id. : id. 6) 29-632 43-9 | 42-4 Id. 20 29-195 42-3 | 41-5 | 45-5 Overcast : cum.: cir.-str, on hor. 23 || 29-083 || 44-9 | 43-3 | 40-2 || 0-06 Id.: light rain : strong breeze. Oct. 23 2 28-963 45-8 | 44-0 Id. : Ten id. 5 || 28-820 || 45-4 | 44-5 More open: scattered heavy clouds: zenith clear. MAG. AND MET. OBS. VOL. I. ss 74 Datty METEOROLOGICAL OBSERVATIONS, OCTOBER 24—NovVEMBER 8. 1841. Gottingen Mean Time of Observation. ah. Oct. 24 20 23 Oct. 25 BaRo- METER Corrected. in. 28-913 28-989 28-977 29-118 29-353 29-362 29-440 29-505 29-677 29-654 29-593 29-605 29-747 29-790 29-697 29-831 29-938 29-936 29-947 29-956 29-984 29-965 29-903 29-889 29-710 29-756 29-796 29-817 30-040 30-062 30-024 30-040 30-094 30-136 30-134 30-133 30-239 30-246 30-210 30-197 30-174 30-149 30-138 30-118 29-907 29-938 29-954 29-964 THERMOMETERS. Max. and Min. 48-5 36-6 STATE OF THE SKY. Much overcast : cum. : cir.-cum. Td: broken clouds: brisk gale. Ikal, 2 id : id.: wild sky. Storm of wind and rain. Clear: cirri: dark cumuli om horizon. Rather open sky : cum.: cirri. Broken heavy cum. : scud : a few drops of rain. Clear above : cumuli on horizon. Overcast: clouds broken to E.: rain: wind. Id.: wind. {high wind. Cum. : frequent showers: three rainbows seen during one hour : High wind : rain. Fair: detached cumuli. Overcast : gleams of sunshine. Zenith clear: ranges of cum. on hor. Cir.-str. to S.: linear cirri: cum. to N. Fair: overcast : cumuli. Cumuli : sunshine. A good deal overcast: cir.-str. on E. horizon. Overcast : cumuli, Fair: overcast : cumuli. Overcast : wind. GEE id. Id. : rain. Overcast : light rain. Id. : id. : Td: id. Id.: breaking to westward. clearing to N. Fine and clear. IGE dee Fine : cirri: cir.-cum. Fair: cir.-cum. : cum. to eastward. Overcast : cir.-str. on E. horizon. doe id. Hazy to E.: clear with cirri to W. Foggy : clouds where seen, cumuli. Fog clearing off : zenith clear. Fair: clear : cirri. Clear. Overcast. Id. Id. Id. Fine and clear: cumuli on S. horizon. Overcast : many cumuli. Id.: dark heavy cumuli. Id. Gottingen Mean Time of Observation. Nov. 10 2 Nov. 11 2 Nov. 12 2 Nov. 13 2 Nov. 14 20 Nov. 15 2 Nov. 16 2 Nov. 17 2 Nov. 18 2 Nov. 19 2 Nov. 20 2 Noy. 21 20 Nov. 22 2 Dairy METEOROLOGICAL OBSERVATIONS, NOVEMBER 8—22. 1841. 15 BarRo- METER Corrected. in. 29-840 29-746 29-796 29-692 29-620 29-617 29-650 29-635 29-650 29-676 29-644 29-709 29-305 29-186 29-092 29-020 29-088 29-104 29.042 29-093 29-508 THERMOMETERS. Max. Dry. | Wet. |.naMin. 48-5 46-9 By O7f 49-4 | 47-6 47-3 48-9 46-9 48-9 46-6 48-8 45-9 52-5 51-8 47-4 48-3 51-9 47-4 48-1 44-8 40-5 37-8 51-6 41-5 38-2 38-9 44-5 39-5 40-8 38-9 37-5 36-5 44.9 39-4 38-5 32-2 40-6 39-5 37-6 35-9 32-5 31-9 41-2 36:3 35-1 27-2 37-0 36-2 34-5 33-9 Dou ter al ae oe 39-1 Dri] NM ercese 23.0 30-4 oateqatate 247.4 | ccdecs D359) Wi seecae 309 31-3 30-62] 21-9 34-4 31-6 29.4 29-3? $e 21-5 21-5 34:8 24-7 23-9 19-9 30-9 29.9 27-5 27-3 17:7 17-5 32-3 23-1 22-5 14-6 28-9 28-1 28-7 28-3 30-4 30-2 30-4 35-4 32-6 21-9 32:3 31:3 22-5 29.5 36-2 26-7 26-5 21-9 32-3 31-3 36:3 34-1 38°3 37-9 38-6 37-7 36:8 35-6 39-5 38-6 38:6 37-6 0-00 0:00 0-19 0-03 0:06 0-00 0-00 0-00 0-00 STATE OF THE Sky, Overcast : cum. : wind : scud flying low. Id.: wind, Jiels. ¢ id. Tigh: id. Many cum.: a few cir.-str. to E.: wind. Tae: id. Rain: nimbi: clear to NW. Overcast: cumuli. Fair and clear: cum. on S. hor. cle cir.-cum. idee id.: cum. More overcast : cumuli. Overcast : cum.: cum.-str. Id.: light rain, but clearing. liglee id, clearing to W. Id.: clearer to W. Overcast: cumuli. Id. : id: clearer to S. Id.: rain. Id.: snow. Overcast : a few cir.-str. : breaking to SE. Hazy: cir.-str. : cumuli to E. Fair: a few cir.-str. : cum. to E. Id.: clear. Clear: cum. to 8. aly: id. Fine: cirri : cum. on hor. Clear. Clear: cirri: cum. to E. Id. Id. Id. Rather overcast : cumuli. Overcast. Td. Id.: breaking to E. Overcast. Cloudy : cumuli : open to S. Clear : cirri. Clear. Hazy : cum. : a few cir.-str. Overcast. Id.: light rain. Overcast : rain. Id.: clearing on N. hor. Id. Id. 76 Datty METEOROLOGICAL OBSERVATIONS, NOVEMBER 22. 1841—January 17. 1842. Gottingen moe THERMOMETERS. awe ce al METER. Max, || CAUS2 STATE OF THE SKY. Observation. ee Dry. | Wet. |anaMin. = Gh dey in. io a e in Nov. 22 20 | 29-101 || 35-9 | 34-5 | 39-6 Fair: clear to E. : cum. 23 || 29-151 || 38-6 | 37-2 | 34-1 |} 0-00 || Many cumuli: wind. Noy. 23 2] 29-198 || 39-9 | 37-9 Wild sky : eumuli : cirri. 5 29-248 38-8 | 36-7 Cloudy : cumuli. 20 | 29-381 || 37-0 | 35-9 | 41-6 Cloudy : cumuli. 23 29-445 39-6 | 37-6 | 35-6 |} 0-00 || Overcast : cumuli: seud. Nov. 24 2] 29-396 || 41-8 | 38-9 Id. : id.: clear horizon. 5 | 29-461 || 37-8 | 36-1 Lowering dark cumuli. 20 29-549 29-0 | «--eee 42-6 Clear, 93 || 29-603 || 33-1 | 31-62} 27-5 || 0-00 Id. Nov. 25 2 29-609 || 39-3 36-8 Id. 5 | 29.640 || 35-5 | 34-5 Id.: a few cumuli. 20 29-677 GOW NW caccos 39.8 Overcast. 23 || 29-672 | 31-9 | 31-5 | 27-0 || 0-00 || Fair: cumuli. Nov. 26 2 29-635 || 35-2 | 392.2 Id.: cirri: black cum. on N. horizon. 5 29-627 30-4 | 30-5 Clear. 20 | 29-500 |} 34-1} 33-0 Overcast. 23 29-494 35-5 33-7 0-04 Id. Nov. 27 2 || 29-476 || 36-8 | 34.8 Id. 5 || 29.455 || 36-7 | 35-3 Id. Nov. 28 20 || 28-685 || 41-7 | 41-5 | 45-5 Overcast: rain. 23 28-657 45-5 | 44-5 28-0 0-42 did sys id. Nov. 29 2 28-591 || 45-5 | 44.2 Clear : cir.-cum.: cum. 5 28-564 46:0 | 45-0 Overcast. 20 || 28-262 || 42-1 | 41-6] 46-4 Overcast : rain. Dolce Meee alll ieee eer ae 40-0 || 0-29 Nov. 30 2 || 28-420 | 44.2 | 43-2 Overcast. 5 28-524 44-6 | 43-4 Id. Jan. 12. 20 | 29-542 | 31-4 | 30-1 | 31-9 Overcast : wind. P33} 29-558 33-2 31-9 25-0 1-58 Tide id. van 13) 2 29.498 33-4 31-6 Tide ¢ id. 5 | 29-491 | 32-7 | 31-6 ills id. 20 29-446 30-4 29-8 33-8 Light snow. 23 29-446 31-3 30-7 30-0 0-00 Id. Jan. 14 2 29-415 34-0 33-0 Id. 5 29-339 || 33-7 | 33-1 Overcast. 20 29-706 || 32:9 | 31-8 | 35-4 Overcast. 23 || 29-748 | 35-1 | 33-6 | 30-0 | 0-15 Id. Jan. 15 2] 29-724 || 35-8 | 33-9 Id.: clear to W. 5 29-700 || 34-5 | 33-2 Fine and clear. Jan. 16 20 | 29-754 || 34.3 | 392.31 36-5 Clear: cumuli on EH. horizon. 23 | 29-860 | 33-3 | 31-1°| 30-6 | 0-20 Id. Jan. 17 2 || 29-893 || 35-5 | 33-6 Id. 5 29-966 34-2 32-4 Id. Jan. 124 23, The rain registered is the quantity which has fallen since Nov. 30. \ DAILY METEOROLOGICAL OBSERVATIONS, JANUARY 17—FEBRUARY 1. 1842. 77 Seen a Gottingen Ramos THERMOMETERS. aan = METER Ane GAUGE SATE OF THE Sky. Observation. Rormcaned: Dry. Wet. and Min. Be Gl ns in. ° 2 ° in, Jan. 17 20 || 30-102 | 28-4 | 27-8 | 38-1 Cloudy : cumuli. 23 || 30-123 | 33-2 | 32-7 | 19-9 || 0-00 || Scattered cumuli. Jan. 18 2 30-122 37-5 36-2 Id. 5 || 30-136 | 36-5 | 35-7 Overcast. 20 || 30-125 | 37:5 | 36-8 | 38-9 Overcast : breaking to E. 23 || 30-133 | 38-0 | 37-2 | 33-1 | 0-01 Id.: scud: light rain. Jan. 19° 2 || 30-046 | 42-0 | 40-4 Id.: gleams of sunshine. 5 30-035 41-1 40-3 Id. 20 || 29-907 || 37-3 | 35-6 | 43-6 Clear : light clouds : cir,-str. 23 29-903 37-5 | 36:0 | 36-1 0-00 || Clear: calm. Jan. 20 2 || 29-868 | 41-1 | 38-7 Fine and clear: cir.-cum. 5 29-842 38-2 | 36-4 Clear. Jan. 21 20 29-396 30-9 | sees 32-4 Fair. ; 23 99-359 || 31-2 | -..--- 93-5 || 0-00 || Id. : cumuli. Jan. 22 2/1) 29-217 || 32-2 | «...-. Overcast: snow. 5 29-156 DOG eccaoe Id. : id. Jan. SQ) |||) cieincsicieive ||] sinicivine | sletn te 33-9 23 29-570 || 23-4 | 23-4 | 18-4 | 020 Jan. 24 2 29-493 30:9 29-1 5 29-399 30-3 28-5 20 29-052 33-6 33-5 35-0 Overcast. 23 29-171 34-6 | 33-5 | 22.2 || 0-02 || Scattered cumuli: fair. Jan. 25 2 29-279 36-9 34-5 Clear. 5 || 29-352 | 32-0 | 30-9 | Id.: clouds to W. 20 || 29-042 | 35-4 | 33-5 | 37-5 Overcast : high wind. 23 || 28-757 | 33-9 | 33-3 | 25-2 || 0-00 Id.: blowing a gale: sleet. Jan. 26 2 || 28-554 | 36-5 | 34-5 Clouds broken : gale. 5 28-509 35:3 | 34-5 Overcast : wind abated a little: rain. 20 29-105 36:5 | 33:5 | 38-0 | Overcast : wind. 23 29 238 37-3 34-2 | 29.5 0-15 || Clear. an. 27 2 29-294 38-6 | 35-2 Id.: cirri. 5 || 29-331 37-2 | 34-5 Td. 20 29-467 34-6 33-0 | 39-1 Fair : hazy. 23 29-529 36-8 | 34:5 | 31-8 0-00 || Cirrous haze. Jan. 28 2 || 29-546 || 38-0 | 35-6 Clear : a few cirri. 5 29-577 36-6 34-3 Id. 20 || 29-727 36-5 | 34:4 | 38-6 Overcast : cumuli. 23 29-825 37-1 34-5 | 31-0 0-00 || Cloudy : cumuli: clearing to N. Jan. 29 2 || 29.888 | 38-4 | 35-3 Clear. 5 29-925 35-2 33-0 Id. Jan. 30 20 || 29-729 | 35-6 | 35-4 | 39-1 Overcast: rain. 23 29-716 36-6 36-4 23-7 0-20 Id. : light rain. Jan. 31 2 29-692 39 1 38-8 Id. : id. 5 || 29-666 || 38-1 | 37-6 Id.: foggy. 20 29-801 35-5) | 3304 40-1 Clear. 23 || 29-858 | 38-6 | 35-9 | 32-0 || 0.01 || Id.: a little haze. Feb. 1 2 29-843 | 40-7 | 38-2 Cloudy : cumuli. 5 29-816 39-1 37-4 Id. : id. Jan. 214, 224, The external thermometer case was being altered and painted, preventing the thermometers from being pro- perly observed. _ enn ee rr ree ens MAG. AND MET. OBS. VOL. I. y 78 DaAILty METEOROLOGICAL OBSERVATIONS, FEBRUARY 1—15. 1842. Gottingen THERMOMETERS. Mean Time of Observation. BARO- METER STATE OF THE SKY. Corrected Wet Mex. ‘ , * land Min. d. h. in. a 1 20 || 29-677 . : 44:3 Overcast : cum.: clear on N. hor. 23 || 29-774 : : 34-0 Fair : scattered cum.: wild sky. D) 29-838 . . Clear : cir.-cum. 29-903 . . Cir.-cum. : hazy on hor. 30-084 . . Cir.-cum.: cir.-str. on hor, 30-119 . . : licks cum. 30-132 : . Clear : a few cirri. 30-134 . . Id. : id. 30-152 : : Overcast. 30-157 : . : : Id. 30-134 : : Clouds more broken : heavy cum. and scud. 30-128 : . Scattered cumuli. 30-109 . : Fine morning : foggy. 30-092 . a id. 30-044 . . Clear. 30-006 : : Id. 29.674 . 2 Overcast : breaking to E. 29.668 : E . Cir.-cum. 29.628 , : Clear: a few cumuli. 29.609 2. ‘ A good deal overcast : cumuli. 29-636 2-7 | : Overcast. 29-648 : : . Id.: eum.: clear to W. 29.627 : . Clear. 29-633 . . Fair: cumuli over % of the sky. 29-534. . ' Overcast : clouds rather broken : cum. 29-512 : . . Id.: breaking to E. 29-458 . . Id.: light rain. 29-417 . . ict id. 29-444 . . Overcast : light rain. 29-522 : . . dys id: wind. 29-541 : Heavy clouds: wind: patches of sky. 29-541 . : lice id. : id. 29-266 : : Overcast : rain : wind. 29-341 : : . Nd: wind. 29-341 . . Id. : id. 29-422 . . Clear: wind. 29-465 . . Overcast : rain. 29-384 : . : . Tet id.: high wind. 29-317 : Idk: ‘lder: id. 29-314 : . Zenith clear: cir.-cum.: dense clouds all round the hor. 29-941 :: : Fine morning : cir.-cum. : cir. 30-058 |) 37- . : Tide: id. 30-022 . Overcast : wind. 30-024 . : Id. 29-911 . : 45:0 Overcast: drops of rain: wind. 29-901 : : . . Id.: -. light rain: wind. 29-960 : : Zenith clear: cir.-cum.: heavy cum. on hor.: wind. 30-044. : . Clear. Daity METEOROLOGICAL OBSERVATIONS, FEBRUARY 15—Marcu 2. 1842. Gottingen Mean Time of Observation. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Feb. Mar. Mar. d. 15 16 17 18 19 20 21 22 23 24 25 BARo- METER Corrected. in. 30-203 30-203 30-168 30-141 30-024 30-030 30-001 29-979 30-016 30-046 30-034 30-058 30-017 29-990 29-914 29-865 sete eeene eee en eens THERMOMETERS. Max. Dry. Wet. and Min. 34:5 | 33:6 | 49-2 39-9 | 37:8 | 33-8 46-6 | 42:5 43-5 | 40-7 41-4 | 38-8 | 48.0 42-6 | 39-7 | 37-6 45-4 | 42-7 44.3 | 41-1 42-5 | 39-7 | 36-1 46-0 | 41-9 43-7 | 40-7 44-7 | 41-5 | 39-7 45-0 | 41-2 43.2 | 39-7 37-0 | 34-8 | 29.9 41-5 | 36-5 40-5 | 35-7 43-0 | 39-5 | 31-5 45:7 | 40-6 40-0 | 38-4 29-9 | 29-5 | 45.8 35-8 | 34-1 | 28-5 41-8 | 37-5 41-5 | 38-8 38-6 | 37-0 | 32.8 40-5 | 39-0 39-8 | 38-5 34-7 | 32-8 | 42.1 34-5 | 33-8 | 32.2 39-4 | 35-8 39-5 | 34-7 Sie || word) |) cocece 41-8 | 36-5 | ...... 43-5 | 38-0 Boaters A Neernee 34-1 37-9 | 37-1 37:0 | 36-3 6-00 0-00 0-00 0-09 0-01 0-00 0-02 0-00 0-01 0-07 0-15 STATE OF THE Sky. Dense cum on hor.: cir.-cum.: cir.-str. Clear: cir.-eum. Cum. : cir.-cum. Clear: cirri. Overcast Id. : Id. : Id. : Overcast Id. : Clear: a Clear from zenith to S.: dense clouds on N. hor. Overcast : cum. : clearing to S. id.: cum.-str.: broken to S. cum.-str. ; wind. id. : id. : cum.: cir.-str. cum.-str. : dense cum. to S. few scattered cumuli. : dark cumuli. Detached cum. over 4 of the sky. Much overcast : heavy dark cum.: wind. Clear. Overcast Id. : rain. Zenith clear : cum. on hor. Overcast : Id. : cumuli. id. Clear : cirri: wind. Id. Zenith clear: cumuli on hor. Clear: cir--cum. Clear from zenith to S.: cum to N. Overcast : light rain. 79 Dark cum. to E. : cir.-str. on W. hor. : mottled cum. and cirri. Hazy: cir.-cum. Clear. Overcast. Overcast. Id. Id. A good deal overcast : cumuli. Snow. Clearing : wind. Much overeast: cumuli. Clear: a Overcast : few cumuli. high wind : drops of rain. Clear : high wind: a few wisps of cloud. Open sky : a few cumuli. Overcast : light rain. Kol: id. Feb, 274 23h, Register thermometers omitted to be set on the 26%, 80 { Gottingen TRNOE THERMOMETERS. i Mean Time Are FF { f ax. Ghee Comreetee Dry. Wet. aad Mia. ‘= dh. in. ° eA ie i Mar. 2 20 || 29-467 | 36-3 | 36-0 | 39-1 i 93 || 29.484 || 38-8 | 38-4 | 34-4 iMar. 3 2|| 29-418 | 40-1 | 39-7 i 5 || 29-299 | 421] 41-7 20 || 29-495 | 37-0] 35-0 | 424 4 23 || 29-518 || 41-3 | 37-6 | 34-9 | Mar. 4 2 29.523 | 43-0 | 38-5 ‘ 5 || 29.506 || 43-7 | 38-6 ‘] | 20 || 29-612 | 38-0 | 36-5 | 44.8 | 23 || 29-658 | 43-5 | 41-3 | 34-5 iMar. 5 2 29-675 || 46-9 | 44-2 i 5 | 29.679 | 45-9 | 44.1 if ' Mar. 6 20 | 29.354 | 39-0 | 37-0 | 50-5 \ 93 | 29.984 | 44-8 | 41-5 | 36-1 i Mar. 7 21 29.189 | 47-4 | 44.3 | 5 | 29.080 | 47-1 | 45-2 f i 20 | 29-014 | 37-5 | 36-0 | 50-1 23 | 29.035 || 42-5 | 39-5 | 37-1 ;Mar. 8 2 | 29-081 || 44-6 | 40-0 : 5 99-077 icin /oteves ||| Mintaverevere 20 | 29-121 | 32.9] 32.1 | 464 ‘ 23 || 29-116 | 36-8 | 35-7 | 30-0 iMar. 9 2 || 29-094 || 36-5 | 34-1 5 || 29-091 || 40-9 | 37-0 i 20 || 29-166 || 35-4 | 32-8 | 41-8 23 || 29.260 | 37-2 | 33-2 | 31-0 Mar. 10 2 | 29-366 | 40-4 | 36-5 5 || 29-485 | 40.2] 36-0 20 || 29-539 | 38-2 | 36-5 | 46-5 23 || 29.428 || 42-7 | 41-0] 33-1 Mar. 11 2 29.219 || 48-8 | 46-8 5 || 29.206 || 43-7 | 40-8 20 | 29-626 | 39-8 | 37-5 | 52.3 23 | 29-668 | 44-5 | 40-5 | 36-4 ‘Mar. 12 2 || 29.669 | 47-4 | 43-0 4 5 || 29-584 | 44.0 | 40-0 | Mar. 13 20 | 29-861 | 41.5 | 40-0 | 48-9 23 | 29-867 || 45-8 | 43-5 | 33-5 Mar. 14 2 29-874 | 48-3 | 46.4 | 5 | 29-879 | 48-9 | 47-4 i 20 | 29-950 | 48-6 | 47-5 | 51-9 23 | 29-974 | 50-9 | 48-5 | 45-3 Mar. 15 2 || 29-946 | 51-9 | 49-5 5 || 29.957 || 50-1 | 48+1 20 | 29-982 | 46-6 | 45-7 | 53-5 23 | 29.973 || 48-6 | 47-1 | 46-1 Mar. 16 2 29-928 | 50-1| 48-1 5 | 29-868 || 49.1 | 47-1 DaAILy METEOROLOGICAL OBSERVATIONS, Marcu 2—16. 1842. STATE OF THE Sky. 0-00 0-00 | 0-07. 0-01 0-01 0-00 0-02 0-01 0-00 0-00 | Clear : a few cum. and cir.-str. | Overcast: cir.-str. on NE. hor. Id.: drops of rain. Id.: light rain: wind. | Id.: high wind: clear from zenith to westward. ” | Sky covered with cir.-cum. and cir.-str. Overcast : rain. lilo ears dee id. id. id. Rather open sky: cum. and seud. Open sky : a few cumuli. | Much overcast, with cumuli. | Open sky : cum. on hor. Zenith clear : cir.-cum.: cum. on hor. Much overeast : cumuli, Ile Overcast : wind. id. | Much overcast. I Fda: a few gleams of sunshine : wind. Id; : patches of sky : high wind. | Overcast : wind and rain. Overcast : rain. Fair: many cumuli. Zenith clear: cum. on hor. : dense black clouds to NW. | Storm of rain to NE. : dense nimbi to S. : open sky to W.: cum. | Fine and clear. Rather open sky : cirri seen above the cum. [eastward. Clear with cirri from zenith to W.: storm of rain passing off to | Heavy cum. to N.: clear to S. Open sky : afew cirri from zenith to W. hor. : cum. on E. hor. Clear with cirri: cum. low on hor. i iil 2 id. Overcast : a few cir.-str. on hor.: cir.-cum.: clearing to S. Overcast : haze. Id.: cumuli. Overcast. Id. : clearing a little to S. Id. : strong breeze. Id. : quite calm. Overcast : cir.-str. on hor. : clearing in zenith. Id.: a few breaks: cir.-cum.: strong breeze. Clearing a little: gleams of sunshine. Overcast : cumuli. Overcast. Id. : quite calm. Id. : cumuli. Id. - Darty METEOROLOGICAL OBSERVATIONS, MARcH 16—30. 1842. 81 Gottingen Binos THERMOMETERS, moans a METER Max, |C4U% STATE OF THE SKY. Geeevanon, | oC || Dry. | Wet. saduyral) 2 toRk in. 5 ° in, Mar. 16 20 || 29-788 || 40-5 | 38-5 | 52-3 Open sky : cum. 23 || 29-761 || 44-2 | 41-5 | 36-4 | 0-06 Id.: id.: cir.: strong breeze. | Mar. 17 2 || 29-672 || 46-4 | 43-0 Overcast : cumuli. 29-511 || 45:3 | 42-5 : FEA ees 5) td. : dark cumuli: wind. iuereneeunetace! 20 || 29-160 | 40-7 | 38-5 | 47-5 Open sky from zen. to E.: dense black clouds from zen. to W. : 23 | 29-178 | 44-0 | 39-7 | 37-2 | 0-07 | Cloudy : cumuli: strong breeze. Mar. 18 2 || 29-137 || 44:5 | 39-8 IGE id. 5 || 29-101 || 41-7 | 38-5 Rather open : cumuli. 20 || 29-012 || 35-5 | 33-8 | 45-5 Overcast: gusts of wind. 23 | 28-975 | 39-1 | 36-4 | 33-6 || 0-00 | Much overcast : opening to westward : wind. Mar. 19 2] 28-951 || 42-8 | 40-0 Many cumuli: cum.-str. on E. hor. 5 28-898 || 44:8 | 41-0 4 Id. Mar. 20 20 | 29-884 || 36-4 | 33-8 | 46-0 Overcast : cumuli : opening to W. 23 || 29-956 | 39-8 | 36-5 | 30-3 || 0-20 || Open sky: cum.: cir.-str. Mar. 21 2 | 30-023 || 40-5 | 36-7 Overcast : cumuli: high wind. 5 || 30-070 || 39-2 | 34-6 id.;: id.) id. 20 | 29-922 || 35:5 | 33-9 | 41-6 Overcast : calm. 23 || 29-863 | 36-0 | 35-5 | 29-3 |) 0-11 Id. Mar. 22 2 || 29-864 || 40-5 | 38.6 Id. : wind. 5 || 29-909 || 40-2 | 36-0 Clear: high wind: cumuli. 20 | 30-097 | 34-3 | 32-6 | 41-8 Zenith clear : cirrous haze. : dark cum. on E. hor. 23 | 30-113 | 36-7 | 33-6 | 34-0 || 0-07 || Clear. Mar. 23 2 || 30-104 || 40-7 | 35.8 Much overcast : a few openings: cum.-str. 5 | 30-072 | 41-5 | 36.5 Open sky. 20 || 30-017 || 44-7 | 42-8 | 42-1 Cloudy : partial blue sky. 23 | 30-017 | 50-1 | 46-1 | 34-0 || 0-00 || Overcast: cum. : cir.-str. [patches of sky. Mar. 24 2 || 30-004 | 53-7 | 49-5 Much overcast: gleams of sunshine: cum.: cum.-str. to N.: 5 | 29-957 || 54-4 | 48-8 Cloudy : clearing in zenith. 20 || 29-719 | 41-5 | 39-5 | 55-9 Much overcast : strong breeze: clear in zenith. 23 || 29-623 || 47-6 | 42-5 | 31-0 || 0-00 Id. : eumuli. Mar. 25 2 || 29-482 || 49-6 | 45-6 Id. : id, 5 || 29-269 || 43-4 | 42.7 Overcast: rain: wind. 20 || 29-059 || 37-5 | 34-5 | 50-6 Open sky : cirro-cumuli. 23 || 29-108 || 41-0 | 35-5 | 33-0 || 0-08 || Much overcast: high wind.: cum. Mar. 26 2 || 29-145 || 42.0 | 36-5 Id. : id. 5 || 29-181 || 41-0 | 35-5 iIel, 5 id. : drops of hail. Mar. 27 20 || 29.298 | 44-9 | 44-3 | 50-1 Quite overcast : light rain. 23 || 29-233 || 50-5 | 48-8 | 31-0 || 0-07 || Open to K.: a few cum. : overcast from zenith to W. Mar. 28 2 || 29-217 || 51-7 | 49-1 Overcast chiefly with dark cum. : about ;}; of sky to E. 5 || 29-160 || 51-0 | 49-4 Almost clear: a few cum.: wind. 20 || 29-459 || 42-4 | 39-0 |. 52-9 Clear. 23 || 29-499 || 45-4 | 41-4 | 37-1 || 0-00 || Much overcast: cumuli: wind. Mar. 29 2 || 29-534 || 48-1 | 42.5 Id. : id. : id. 5 || 29-542 | 46-4 | 41-7 Open sky : cumuli. 20 || 29-400 || 41-3 | 39-0 | 49-3 Overcast : light rain. 23 || 29-350 || 44-8 | 43-5 | 37-6 || 0-04 Id. : id. Mar. 30 2 | 29-331 || 47-1 | 45-0 ig? : | main: winds 5 || 29-339 || 49-3 | 44-6 Clear: a few cumuli: wind. MAG. AND MET. OBS. VOL. I. a 82 DAILY METEOROLOGICAL OBSERVATIONS, Marcu 30—Aprit 13. 1842. Gottingen THERMOMETERS. M 1 BaRo- ean Time METER Real oN eee STATE OF THE SKY. of Max. ted. Observation. Gomoube 2 Wet. and Min. Gh 15 in, S ic in. Mar. 30 20 29-126 2: 41-5 54-8 2 Overcast : light rain, 23 29.034 : [8 - 37:2 Id: wind and rain. Mar. 31 29-046 Open sky: cirri: high wind. 29-109 . 3 Clear: cirri. 29-002 : , Overcast to SW. : clear to NE. 29-027 . : . Open sky : cumuli. Apr. 29-072 . : Clear from zen. to S.: heavy clouds to N. 29-132 2 : Overcast : clearing to northward : rain. 29-523 . : A good deal overcast : clearing to N. (windward.) 29-591 : : ' Overcast : high wind. 29-630 : : Storm of hail: high wind. 29-647 : . Open sky: very wild. 30-102 . . Clear: cir.-cum. : cir.-str. 30-118 : . . Clear: cum. : cir.-str. 30-096 : . Cir.-str. : a few cumuli. 30-083 . : Clear : cir.-str. 30-085 . . Fine and clear: a few cir.-str. 30-090 : : . Clear. 30-066 : : Id, 30-032 30-029 30-015 29-961 29-915 29-844 29-834 29-821 29-764 29-983 29-982 29-952 29-945 30-145 30-149 30-141 30-112 30-129 30-134 30-128 30-120 30-137 : ° Fair : many cumuli. 30-111 : : . Cloudy : cumuli. 30-091 : . Cumuli: cir.-cum. 30-051 : . Clear : a few cumuli. 30-018 : : Overcast : cumuli, 30-023 . . : Td. id. 30-029 : . Open sky : cumuli. 30-012 . : lig § id. March 304 22h, Index of maximum thermometer suspected to have been shaken along the tube by the wind. ‘ DAILY METEOROLOGICAL OBSERVATIONS, APRIL 13—26. 1842. 83 Gottingen THERMOMETERS. Mean Time METER STATE OF THE SKY. of Max. C ted, Observation. Breer’ . * Jand Min. ' BARO- in. ie 30-038 . : 45:3 A good deal overcast: cum.: strong breeze. 30-021 Bee p 36-6 Id. : id. 29-998 L4.§ lle Id. : id. : high wind. 30-004 . 2: Mele id. : id. 30-076 . . Overcast : strong breeze. 30-093 , a : Id.: high wind. 30-096 4 0- Id. : id. : clouds breaking. 30-094 . : Id.: a few openings. 30-137 : . Overcast : calm. 30-154 LO: . . Id>: id. 30-134 : . Open sky : cumuli. 30-100 . 3: Clear. 30-009 : . Misty. 29-984. : . : Clear. 29-957 30- : Id. : cir.-cum. 29-938 j1- . Id. : cum. 30-000 . . Clear : cir.-cum. : 29-996 . : : Id. : id. : ‘ 29.956 ; : ich aGlers id.: a fewcum. 29-931 . : Id. : id. 29-997 : . Clear. 29-984 . : ‘ Id. 29-959 . . Id. 29.937 5 ; Id. 29-971 . : Clear in zenith : hazy on hor. 29.964 j 5 : Clear: almost no wind. 29.924 ; ; Cir.-str. over } of sky, chiefly to W. 29.890 36. : Sky covered with diffuse cirri. 29.883 : : Clear. 29-849 ‘ é : Id. 29.814 , ‘ Id.: a few cir.-str. 29-783 4 ‘ Cir.-str. : reticulated cirri. 29-810 : . Overcast : foggy. 29-812 3 : : Clear: cirri; a few cumuli. 29-761 . : des) ade : 29-735 . : Id.: id. 29.912 Overcast. 29.933 : : : i Haze just cleared off : a few cum. to W. 99.922 ; : Clear : a few cumuli. 29.929 . ; Clear and calm : a few light cum. to S. 30-003 Fog. 29.989 : é : , A patch of mottled cirri to N. 29-974 32. . Clear. 29.959 30- ; Id. April 154 20%, Observation made at 205 20™, April 254, The previous observations were made by Mr. Russell. DaAILty METEOROLOGICAL OBSERVATIONS, APRIL 26—May 4. 1842. 84 *OUIT} BULOS OF JTIS oY} posuvyo you pry jpessnyy “ay yeqy Ajext sumoos 47 © “F Avy 0} snoraoad skep omos 10g suoyearasqo oy} sjooye uae styy Atqeqoad {ssoponyea pp Avy Wosz sBurpver oy} Jo sseUL 94} Jopued 0} Sv 4U9}xe Ue YoNs 0} woowa34e Areqpidvo yo camod sy 4soy pvy q[nq ey} punos HTIS 04} Yeq} podedocostp uEy} sem 41 sv ‘pgT ABI []1} UoATS ore AoyoOMOWAEY} GING yom OY} JO SduIpeet ON “nC pp AV *]ROIAOA OUTAd pue UBIPIAoUI oY} UI ere Yor ‘A10}VATESqC 94} JO sT[VA 04} 0} coUDLeJoa Aq pouTUITajJep oLv spnopo ey} Jo VOOM oy, ‘pe ABI “*poadosaid svm ‘1aAeMoY ‘Y}UOUL oy} OJ uns oy} ‘Avy JO YZUOM oY} Sutanp 4soy o10M “Gg OSNLS uTLA oY} Jo sSuIpvod OY, “pT Avy *poainbea yuousn(pe ou 4Nq ‘spxvMto}ze S[BAIOZUT 4B OMOP SVM YOITA ‘paytsea rajeu0Ieq oy} Jo Aytaepnorpuedsseg ‘pegs pue ps Avy ‘JOTProPUBY & JO PLE ol YITM pozVUNTse st PUTA oy} JO UOLOeAIP oy, O-g 78 ONTeA oy} eTqnop AyazveT 07 Sutsvoxout ‘arour st enTea oy} ¢.T puokoq suoryeuityse 10F : oovJans Jo yooy eaenbs oy} uo eanssoad yo spunod ‘st yey} ‘tajou0MeUy oy} Aq soyUenb owes oy} 0} yuepeatnba ATreou orom G.T depun suoneuntyse 42y} ‘TZ “390 peyote Ao}oMOMEUY OY} YIIM UOsIaeduI0D UO ‘taAOMOY “PUNOJ SBA 4T £9 07 Y SEA PULA oY} JO OoAOZ OY} JO SUOT}EUNTZSa OY} UT pasn eyes oy, ‘spnoyo jo seyoyed a0 yoyed qyeus [.9 { Ays Jo soyoyed a0 yoyed {wus soyIUsIs G.g ‘s[eUIIoep UL oxy UAATS ySnouyye ‘sxozaenb pue spun ul epeut oom suoryemyse oy, ‘*AYS OU OT ‘Spnojo OU Suyyeorput Q ‘OT OF O SE spnopo Jo AyHUeNh oy} Jo UoTVeUUIZsSo 04} UI pesn oTBoS OY, “PLZ [dy ‘aJs-"I10 AQF T : LOY puNor TTNUMD | O-¢g “AN €-0 se | O:9G || F496 || O ‘Tau poyorjop Aavoy | 0-9 “MN €0 ges | 19S | s6c-6s || oO o b Av "MN 0 449g | 8°6 “MN €-0 Z-9p | 00S | PIS || 119-6% | 0 ¢@ ‘TRU yorTq Aavoyy | 0-01 ‘MN “MN €-0 €€9 | GOP | GLb | I19-6% | 0 02 “Ayyrox AYs : TTMUMS Suryooy-ornyoaly | 0-6 ‘INN 8:0 0-2$ | 06S || 209-62 || 0 ¢ “TS 0} Azey : “wimo-"a10 : sprez “IO YBIM “uN | 0G ‘aS "aS 80 0-s¢ | €:09 || 6F9:62 | 0 3 € AE ‘UINd-O4IID JO sputq : “wMo peyorjoq | 0-1 ‘a m0) 8-86 | 63S | FPS | 90L6 || OF Es "Ito JO sywarys : 0} AyTrur ANG | 1-0 0:0 G-¢9 | L:6¢ | 8:0F || 64266 || 0 02 "MN pue “A 04 Aporgo raumD | ¢-Z ‘a4qus | $:0 Z-6¢ | S19 || 16866 || 0 ¢ “‘TTnuMO posozyvog | O-g ‘as OT 809 | 69 | st66s | 0 6 3 ACW "S 0} Yeays-orn1o : Ayprot A¥G] FJ-0 “he Lee | 6Lb | S6P || 646-62 || 0 € BuLeAA spuoyy | 0-01 0-0 O-€S | Teh | Geb | OTO-OE | O OT AL “AN 0} “a}8-"110 Jo yoqed ypeus W | ¢-0 “ON 8-0 ¢-6P | L:0¢ || 96466 || 0 ¢ "MN 9F°N 4q punor “Gg wosy “toy uo ‘uinD | 8-0 "AN SI [sb | 6p || 61866 | O @ Og ady ‘TnUND | 0-6 ‘ON €-0 | 00:0 || oFE | SSb | 82h || Ze8-6% || O zs "ysv010AQ | 0-01 “EN S-0 Peg | 98E | €6E || Sb86s || 0 06 “ALN 0} yoyed [[vurs B :* AA pure “AAG 0} “YS-"A10 pure “aI | 8-0 ‘a4qag | $80 g-09 | ¢29 | 6e86s | 0 ¢, “MA PUR "AAS OF “ABS-"AI | G0 “as 3-0 619 | st9 || 986s | 0 @ 66 ady "Ie | 0-0 + 1 000 | b8e | 2:S¢ | 8g || 686% || 0 & "MS 0} “448-"t19 | €-0 0:0 1:09 | $06 | S-4b |] 806-66 || 0 08 “AN 0} *ays-"dto Jo oul] MoT VW | G-0 ‘IN C1 Ts¢ | 3-09 || 69862 | 0 ¢ "AS pue “N 0} “ays-"tto puw “19 | ¢-0 “IN 3:0 6rS | @8¢ | 968-66 || 0 3 83 “adv "AN pur “N 0} “YS-"AIQ | S-0 ‘AN Z-0 || 00:0 || a-8e | ber | BSb || PE66S | 0 &z "4sto10AQ | 0-OT 3-0 6-09 | €9¢ | 4:9 || 426-66 || 0 06 DT ASE L3G | 1-6¢ || P0666 || 0 S ‘PI 0% ; 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I. 110 Term-Day AND ExtTrRA METEOROLOGICAL OBSERVATIONS, JULY 21—NoOVEMBER 27. 1841. — Gottingen || Baro. THERMOME- Gottingen | prgo. | THERMOME- eects METER hei STATE OF THE SKY. peas ai METER aces STATE OF THE Sky. Observation. Boece Dry. | Wet Observation. eorkerted Dry. | Wet. d. h. in. S 5 d. h. in. © i July 21 10) 29-305 || 56-5 | 53-7 Sept. 22 23 || 29-390 | 55-0| 53-6 || Overcast: calm. 11] 29-311 || 55-6] 53-2 Sept.23 0|| 29-386 | 56-1] 54-1 Id. id. 12) 29-320 || 55-3 | 52-6 1 || 29-356 | 56-9] 54-7 ds id. 13 || 29-326 || 54-7 | 52-1 2 || 29-359 | 56-7| 55-7 | Scud: cum.: light rain, 14|| 29-332 || 54-7 | 49-8 3 || 29-384 | 59-0| 55-8 | Cloudy: gleams of sunshix 15 || 29-330 || 52-7 | 49-0 4 || 29-372] 58-8| 56-7 || Cloudy to N.: cir.: sky 16 || 29-341 || 52-5] 48-8 5 || 29-370 | 58-3] 56-0 || Cum: cir.: clearer. 17 || 29-341 || 52-9| 48-6 6 || 29-368 | 56-9| 54-6 Id.: sky rather open. 18 || 29-342 || 53-2) 48-8 7 || 29-369 | 55-6} 54-2 || Overcast : cumuli. 19 || 29-369 || 53-6) 49-1 8 || 29-386 | 53-4] 52-1 Idee id. 20 || 29.349 || 54-4) 49-7 9 || 29-388 | 53-0) 51-7 Tides id. 21|| 29-383 || 54-2] 50-1 10 | 29-397 | 51-3} 50-7 || Open sky. 22 || 29-402 || 53-1) 50-3 23 || 29-401 || 53-7| 50-6 Oct. 20 10 || 28-873 | 40-2| 38-8 || Overcast: light rain. July 22 0} 29.430 | 54-7) 51-0 11 |) 28-953 || 37-0| 35-5 || Rain: wind. 1 || 29-439 || 55-1) 51-2 12 || 28-998 | 34-6] 33-7 || Heavy rain: wind. 2 || 29-465 || 56-5 | 52-4 13 || 29-118 || 35-9) 33-6 || Light showers of sleet: y 3 || 29-478 || 55-9| 52-3 14 | 29-206 | 36-0} 34-1 || Cloudy: fair: wind abatin 4 || 29-486 || 56-6) 52-1 15 || 29-258 | 35-6) 33-5|) Id.: id.: wind rising 5 || 29-510 |} 56-2] 52-0 16 || 29-285 | 35-0) 32-4 || Clear: light breeze. 6 || 29-484 || 55-9) 51-5 17|| 29-361 || 33-4| 30-8] Id.: id. 7 || 29-532 || 55-2) 51-1 18 || 29-374 || 33-2| 30-3 || IEC id. 8 || 29-568 || 53-8 | 50-7 19 || 29-441 || 32-7| 29-9}| Id. 9 || 29-548 || 53-1) 49-9 || Light rain. 20 || 29-456] 33-7} 31-1 || Cumuli 21 || 29-497 || 34-7 | 31-8 || Clear Aug. 27 10 || 29-864 || 58-6 | 56-4 || Cloudy : heavy cumuli. 22 || 29-524 || 35-8| 32-7] Id.: fresh breeze. 11 || 29-847 || 58-8 | 56-7 || Cloudy: cumuli : a gale of wind. 23 || 29-561 | 37-2| 34-0 | Clear 12 || 29-821) 58-1] 55-8 || Cum. : cir.-str.: high wind. Oct. 21 0|| 29-568) 38-0| 33-6|| IRd 13 || 29-779 || 58-3 | 56-0 1 || 29-587 | 39-6| 36-0} Id.: calm. 14|| 29-780) 58-8) 56-1]] Id.: id: id. 2|| 29-628 | 41-0) 37-0|| Id.: id. 15 || 29-793 || 58-4| 56-0 3 || 29-608 | 41-7) 37-5 || Cum.: cir.: calm. 16 || 29-774 | 58-8 | 56-2 || Overcast : drops of rain. 4 || 29-607 || 40-5 | 37-0 || Many cum. : cirri. 17 || 29-812|| 57-3 | 55-8 Id. : 1s wind. 5 || 29-682 || 39-6| 36-8 | Cir.-str. 18 || 29-826 || 57-0| 56-0 Id. : wind abated. 6 || 29-703 || 38-8 | 36-5 || Nearly overcast: cir.-str. 19 || 29-808 || 57-6| 56-4 Id.: light rain: clearing to E. 7 || 29-737 | 37-9 | 35-7 | Clouds on hor. : sky in 20 || 29-845 |) 58-2} 56-8 licks 2 ids id. 8 || 29-761 || 37-5] 35-5]/ Id.: id. 21 || 29-853 || 60-1 | 57-1 || Clear: sunshine. 9 || 29-769 | 36-5 | 34-8 || Clear. 22) 29-833) 61-8] 56-5 || Cum. : cir.-str.: fine. 23 || 29-861 || 62-1] 57-3 |) Overcast: cum.: light wind. Nov. 26 10 | 29-613) 29-6) 30-1| Hazy : lunar halo. Aug.28 0|| 29-877 || 63-2} 58-1 || Clearing: cum. on hor. 11|| 29-618 || 30-2| 30-6] Id.: halo less distinet. 1 || 29-887 || 64-3 | 58-1] Scattered cum: light breeze. 12|| 29-600 || 31-1] 30-9 || Overcast. 2 || 29-833 || 64-2| 56-4 Ide: id. 13 || 29-595 || 31-8) 31-5 Ia. 3 || 29-875 || 65-1] 57-1 || Clearing : id. 14 || 29-580 || 32-4] 31-8 Id. : calm : light snow. 4 || 29-850 || 65-3) 56-2) Cum.: fresh breeze. 15 || 29-560}} 32-5) 31-8 Id.: id.: snow. 5 || 29-846 || 64-0] 56-6 || Id.: id. 16) 29-531]] 32-6] 31-7 Td: ids: esas 6 || 29-884 || 63-4] 55-8 || Id.: cir.: scud.: calm. 17 || 29-516 |] 32-9| 31-9 Id.: ido: id 7 || 29-906 || 62-0] 56-4 || Id.: id.: cir.-haze. 18 || 29-512|| 33-6| 32-0 Td. “dis eaan 8 || 29-892 || 59-2) 56-8 || Much overcast : calm. 19 || 29.499 || 33-6| 32-6 |) Overcast: calm. 9|| 29-887 || 58-8} 56-3 Id.: id. 20 || 29-500]| 34-1] 33-1 Td. 21 || 29-508 || 34-5) 33-1 ek, ¢ snow. Sept. 2211 ]|| 29-466 |) 51-1| 50-1] Rain: calm. 22) 29-496 || 34-7| 33-4 Id. 12] 29-432) 51-2} 50-2} Fair: cloudy : light breeze. 23 || 29-494 || 35-5| 33-8 Id. 13 || 29-426) 51-8} 50-7] Id.: id.: id. Nov. 27 0|| 29-493]] 35-9| 34-2 Id 14} 29-420] 51-9| 50-6 |) Overcast : calm. 1|| 29-483 || 56-9} 34-9 Id 15 || 29-418 || 51-9| 50-5 Id. : id. 2|| 29-476] 36-8] 34-7 Id 16 | 29-350 |) 50-0| 48-9 Id. : id. 3 || 29-463 || 36-7 | 34-7 Id 17 || 29-382 || 50-5 | 49-6 Id. 4 || 29-453 ]| 36-7) 34-7 Id 18 || 29-401 || 51-0} 50-1 Id. 5 || 29-455 || 36-7 | 35-2 Id 19 || 29.399) 51-3] 50-0 Id. 6 || 29-470 || 36-5| 35.4 Id light rain. 20 || 29-396) 51-6) 50-4 Id. 7 || 29-459 || 36-7} 35:8 Id id. 21 || 29-396) 52-6] 51-3 Id. 8 || 29-460 ]| 37-5| 36-5 Id thick mist. 22 || 29-393 || 53-5| 52-1 Id. 9 || 29-448 || 38-1} 37-0 Id light rain. mM-DAY AND ExTRA METEOROLOGICAL OBSERVATIONS, DECEMBER 22. 1841—Aprit 21. 1842. 111 en Peng: THERMOME- Gottingen tor cae eis me || METER oo STATE OF THE SRY. een METER ae STATE OF THE SKY. ion, ees Dry. | Wet. Observation. USER Dry. | Wet. h. in. 2 S (erat a in. c 10) 29-551 || 22-3) 21-8] Clear: a few cirri. Feb. 25 22 || 28-876 || 36-9] 35-4 || Overcast: snow. 11] 29-538] 21-7) 20-5] Id: id. 23 || 28-895 || 34-5] 33-8 || Clearing: wind rising. 12|| 29-530] 20-5; 19-9) Id.: id.: cum. Feb. 26 0 || 28-921 || 39-5| 36-7 || Many cumuli. 13) 29-514 || 23-5] 22-6 || Overcast. 1 || 28-938 || 39-8| 36-4 || Cloudy in zen. and NW. 14 || 29-503 || 28-4} 28-0 Id.: calm. 2|| 28-958 | 39-4] 35-8 || Many cumuli. 15 || 29-479 | 32-4| 31-4] Light rain. 3 || 28-973 || 40-1] 35-7 Id. 16 || 29-459} 34-5] 33-2 Id. 4 || 28-983 || 39-7| 34-8 || Open sky : cumuli. 17 || 29.442 || 35-5] 35-3 || Much overcast. 5 || 28-998 | 39-5| 34-7 || Clear: a few cumuli. 18 || 29-426 || 36-1] 35:5 Id. 6 || 29-019 || 35-0} 33-1|| Id. : id. 19 || 29-413] 36-7] 35-8 Id. 7 || 29-048 || 35-2) 32-9) Id.: id. 20 || 29-406 || 36-5} 35-8 Id. 8 || 29-077 || 34-4] 32-2]| Id. 21 || 29-390 | 36-4| 35-8 dey: foggy. 9 || 29-109 || 33-3} 31-8 || Cumuli on horizon. 92| 29.381 | 36-6| 35-7 | Fog. 23 || 29-366 | 37-7| 36-8 || Heavy mist. 0 | 29-344 | 38-4] 37-5 || Overcast: mist gone. Mar. 23 10|| 30-060 || 33-4] 32-8 || Overcast : cumuli. 11 || 30-051 || 34-7 | 33-6 Id. : calm. 29.316 || 38-6| 37-5 lil = rain. 12|| 30-037 || 35-4] 34-1 Id. : id. 2|| 29-295 | 38-5] 37-5 | Rain: mist in the valleys. 13 || 30-029 || 37-1 | 35-7 Ide id. 3 || 29-284 || 38-9] 37-9 || Overcast. 14 || 30-020 || 36-2] 34-6 ae id. 4|| 29.277 || 38-7] 37-7 Td. 15 || 30-008 || 36-7 | 35:5 Id. : id. 5 || 29-270 | 39-2) 38-4 ds 16 || 29-985 || 39-3 | 37-9 Tee id. 6 || 29-285 | 39-1) 38-2 Id. 17 || 29-983 || 39-7 | 38-5 eh s id. 7 || 29-316] 39-5] 38-0 Id. 18 || 29-990 || 40-4] 39-8 Tidy id. 8 || 29-336] 39-1} 37-3 | Cumuli: breaking up. 19 || 30-002 || 43-7 | 41-7 ich id. 9 29.384 || 39-4 37-1 Clear: mottled-cir. : cir-cum; converging to N. 20 30-017 44-8} 492-8 || Clouds breaking. 21} 30-018 || 46-6| 43-7 || Overcast: cum. : cum.-str. 10} 30-006 | 40-5 | 39-2 || Overcast. 22 || 30-024 || 47-8] 44-8 Id. : id.: a few cirri. 11 || 30-008 | 40-9} 39-6 Id. 23 || 30-017 || 50-1) 46-1 Id. : id. 12|| 29-985 | 40-1] 38-4 iol light wind. Mar. 24 0] 30-014 || 51-8} 47-1 glee id. 13 | 29-978 | 39-3) 37-7 || Clear in zen. : wind rising. 30-016 || 51-9) 47-1 iGk, < id. 14 || 29-977 || 39-3| 37-8 Id. 15 || 29-971 | 39-3| 37-8 16 || 29-966 | 39-0) 37-7 || Overcast. 17 || 29-950 | 39-4] 37-8 Id. : clearing in zen. 18 || 29.928 | 39-5| 37-8 || Quite clear. 19 || 29-916 || 37-7| 36-3 || A few thin clouds. 20 || 29-907 || 37-3 35-6 |) Clear: linear cirri. 21)|| 29-917 | 36-7] 35-5|| Id.: id. 22) 29-911] 36-0| 34-5 || Clear: calm. 23 || 29-903 | 37-5| 36-0] Id.: id. 0 |) 29-892 || 38-6| 37-0} Id.: id. 1 || 29-877 | 41-2) 38-3} Id: id. 1 2 || 30-005 || 53-6| 49-5 || Breaking: cum.: cum.-str. 3 || 29-982 || 55-0} 49-6 || Broken clouds. 4 || 29-965 || 55-0| 49-6 || Clouds dispersing. 5 || 29-957 || 54:4} 48-8 || Clear in zenith. 6 ih 8 9 29-952 || 52-6) 46-6 || Clear: a few cumuli. 29-941 || 48-6 | 44-6 || Clear: cirri: cum. on hor. 29-970 || 45-8} 42-7 ]| Id.: id. 29-970 || 42:7] 40-7 || Id.: a few cumuli. Apr. 20 10 || 29-973 | 46-7 | 43-8 | Clear: a few cirri. 11 || 29-967 || 42:0 | 40-5 || Id.: id. 12|| 29-974 | 40-8} 39-7 || Id.: id. 13 || 29-970 || 41-5 | 40-5 |} Much cirrous haze. 14 || 29-976 || 41-2} 40-0 |] Clear: cumuli. 15 || 29-972 || 38-8} 38-2] Id.: faint traces of Aurora. 16 || 29-980 | 36-8} 36-5 || Id. 17 || 29-983 | 35-3] 34-7 || Id.: calm. 18 || 29-972 }| 36-8) 36-3 || Id. 19 || 29-972} 38-8] 38-0 20 || 29-971 || 43-7| 41-7 || Id.: haze on horizon. 211) 29-971 || 47-8 | 45-6 22 || 29-975 || 52-7| 47-3 || Id.: nearly calm. 2); 29-868 | 41-1) 38-7] Clear: cirro-cumuli. 3 || 29-854 | 40-6) 38-5 || Id.: id. 4 || 29-852 39-8 | 37-7 || More overcast: cumuli. 5 || 29-842 | 38-2] 36-4 || Clear. ; 6 || 29-835] 35-6} 34-0 || Id.: a few cirri on hor. 7 8 9 29-836 | 34-6] 33-3) Id.: id. 29.834 | 34-0] 33-1 || Very clear. 29-836 Id. 10 || 28-947 || 34-5| 32-5 || Clear. 11 || 28-953 || 33-2} 32-0 || Id. 23 || 29-964] 56-8 | 49-1) Id.: id. A. few light clouds : lunar halo. | Apr. 21 0 || 29-952] 59-8] 49-9 || Id.: id. Id. 1 || 29-945 | 63-3} 51-7 || A few linear cirri. 2|| 29-924 || 65-4} 52-0 || Linear cirri to W. over + of sky. 3 || 29-912] 66-2| 52-0 Id. 4 || 29-897 | 67-8 | 52-7 || Diffuse cirri over sky. wind rising. 5 || 29-890 || 66-4} 55-8 Td. 18 || 28-831 || 35-7 | 34-1 |} Id.: light wind. 6 || 29-887 | 65-1 | 55-3 Td. 19 || 28-821 |) 34-4 | 32-9 || Clouds breaking : mod. wind. 7 || 29-892 || 62-4} 55-4 Id. 20 28-856 34-7 32-8 || Snow. 8 || 29-893 || 57-1] 53-0 Nearly coverad with cir.-cum and cir-.str. 21 || 28-864 || 34-5} 33-7 || Open sky : cumuli. 9 || 29-896 || 55-7) 52-3 Td. 112 TERM-DAY AND ExtTrRA METEOROLOGICAL OBSERVATIONS, MAY 5—JUNE 22. 1842. GSttingen THERMOME- WIND. STATE OF THE Sky. Mean Time Baro- iad ; of METER Esti- a . Quan- : Observation, _ || Corrected. Deyo Wee mee, Direction. || Clouds moving from oes a Species of Clouds, &. d. h. m. in. ° ° 0—6. 0—10. May 5 8 0O|| 29-126 || 49-8 | 49-6 0-6 SS il) <8 et Bees. Light rain. May 6 8 Oileoe:940 Met5G (4456 lean a well © Gaeemnmeeees Rain. May 7§23100\| G28-GU2 Niele cc 'l|mtieeal| | We Al iersataine May 14 23:20) 30180.) B56-yo)es-eeitessaregla ob Sal 3) | MY ieee May 15. 7-20) 30233 hil cee ce -ccall incase | Eh eS aie May 16) 86) 10} \\3021908 (64-1) 63: 5uillos eens a ee ei eeeotetrs Tile SOA OS aN eG267 62 0dllaenwseaklae | el me 7 May 21 23 0|| 29-517 || 58-2 | 52-0 |] -..... 4-0 | Cumuli. May 29 0 O}} 29-697 || 59-5 | 52-5 1-5 6-0 | Cumuli and cirri. May 2710 0|| 29-661 | 49-9 | 47-4 0-0 2:0 | Cirri. 11 0} 29-665 | 47-4 | 45-6 0-0 2-0 | Cirri to N., pointing NNE. 12 0} 29-669 || 46-7 | 45-5 | ...... 2-0 Ids: idt, > INe 13 0O|| 29-667 || 45-4 | 44-3 || ...... 2-0 lich 2 id. 14 0] 29-662 || 44:0 | 43-4 || ...... 2-0 IGE moving off to E. 15 0} 29-663 || 43-1 | 42-5 0-0 0-0 16 0} 29-660 || 44-2 | 43-5 0-0 1-0 | Cirri: cirro-strati. 17 0] 29-650 | 43-6 | 42-8 0-0 1-0 | Cirro-strati to E. 18 0] 29-665 | 46-8 | 44-9 || 0.0 0-0 | Clear. 19 0} 29-667 || 52-0 | 48-9 0-0 0-0 | Id. 20 0} 29-682 | 52-1 | 49-1 |] ...... 10-0 | Overcast: light breeze. PN ON PST BYE Ml STON oases NE Clearing : id. 22 0| 29-681 || 58-7 | 51-4 0:3 5-0 23 0) 29-687 || 58-3 | 51-7 0-5 W. W. 6-0 | Cumuli. May 28 0 0] 29-692,] 59-8 | 51-9 0-6 Ww. 0. 3-0 Id. 1 0} 29-695 || 60-0 | 52-2 0-3 Ww. 8-0 Id. 2 0|| 29-699 || 58-5 | 51-2 0-8 W. 9-0 Id. 3 0] 29-704 | 59-2 | 51-4 0-8 8-0 | Cumuli in ranges round horizon, 4 0|| 29-708 || 60-1 | 52-4 O:3eslae we i, - 8) 9 eileen: Id. 5 0] 29-718 || 59-8 | 51-0 0:5 2-0 Id. 6 0) 29:721 || 57-9 | 50-5 |) .-.... 3-0 | Cumuli: cirri. if O}] 29-723 || 57. 7.| 502 0:3 1-0 Tdhs) Seidi 8 0} 29-722 || 55-1 | 49.4 0-0 3-0 Neat std 9 0O|| 29-730 || 51-9 | 48-9 0-0 6-0 [June 5 2 0] 29-710 || 64-0 | 54.7 | ...... 6-0 | Light showers during the day. June 11 23 20] 30-187 || 58-5 | 55-1 0-0 0:3 | Linear cirri. June 18 23 30 | 29-555 || 52-7 | 47-8 1-3 E. 10-0 June 20 20 0] 29-349 || 57-2 | 55-8 0-0 10-0 | Seud. 21 30 || 29-340 || 63-6 | 59-4 0-3. $:0. 9-0 | Scud and cumuli: cirro-cumuli. 23 0} 29-336 || 63-9 | 60-1 0:3 SSW. SSW. 8-7 IGE id. : linear ¢ June21 0 0] 29-334 || 63-9 | 59-9 0:5 SSW 2 SSW. 9-7 | As at 234, passing showers. 1 0} 29-331 |) 66-8 | 60-4 0-4 SSW. 8-0 | Scud and cum.: cirri, &c.: towering cum. 2 0] 29-314 || 69-3 | 61-9 | 0-3 5-0 | Towering cum and nimbi: cir. : like thu 3 0] 29-301 | 69-8 | 61-0 0-2 6:0 | Cum. : nimbi: cirri, &e. fh 4 0] 29-282 || 61-8 | 59-9 0:3 E by N: SSW: 0. 9-0 | Cum.: nimbi: cirri : thunder-storm ; al 5 0]| 29-288 || 61-6 | 59.2 0-5 SSE. 10-0 | Nimbi, &c.: thunder: light rain. 6 O} 29-311 || 57-5 | 55-5 0-0 SSE. 10-0 | Nimbi: heavy rain: thunder-storm. 7 5] 29-320 | 56-4 | 55-5 || 0-0 10-0 | Nimbi: distant thunder. Ps 815] 29-318 || 56-7 | 56-1 0-0 9-9 | Nimbi and seud: cirro-strati, &e. [i ‘8 50 || 29-316 || 56-5 | 56-0 0-0 SW: SE. 9-7 | Cirro-cumulous scud : nimbi and seud 1 June21 20 0O|| 29-348 || 55-7 | 50-7 0-5 Ww. Ww. 2-0 | Scud: cum.-str.: cir.-str.: cirri. 21 0} 29-407 | 56-7 | 51-2 0-4 Ww. B15) || icles idepe id. : id. 23 0}| 29-420 | 59-3 | 51-1 0-5 5-0 | Cumuli: reticulated cirri. iJune22 0 5]|| 29-428 || 60-5 | 52.2 0:3 9-0 Td id. 2 0|| 29-424 | 64-6 | 54.6 0:8 WSw. 7-0 Id. : cirri. 3 0} 29-431 | 64-1 | 53-9 || ...... WSW. 6-0 Id.: cir-haze: fibrous cirri. 5 0] 29-436 62-6 | 53-9 0-6 8-0 Id.: cir.-haze chiefly, cir-cum. 6 40 || 29-442 | 63-7 | 53-7 0:3 8-0 | Cum. on hor. : cirri. 10 0O| 29-463 | 51-6 | 48-6 0-0 3-0 | Cirro-cumuli to S.: cirri and cumuli TERM-DAY AND ExtTRA METEOROLOGICAL OBSERVATIONS, JUNE 22—JuLy 20. 1842. BS Meacen THERMOME- WIND. STATE OF THE SKY. an mTrme Saal sais Bsti- 1 , Quan- ae Corrected. Dry. | Wet. ici Direction. $ seer ae a Species of Clouds, &. ah m in. : ° 0-6. 0—10. 2211 O|] 29-467 || 48-9 | 47-1 0:3 Wiel m ee * edli emer Clouds on hor.: clear in zen. 12 0O|| 29-472 46-9 | 45:3 0-0 2-0 | Cumuli, &e. to S. 13 0O|| 29-474 | 48-4 | 45-8 | 0-3 8-0 | Chiefly large cirro-cumuli. 14 0] 29-473 | 46-6 | 44-2 | 0.3 3-0 15 0|| 29-477 | 44-0 | 43-0 || 0-5 1-0 | Cirri to E. 16 0|| 29-471 | 42-0 | 41-2 |) 0-3 2-0 Id. 17 0|| 29-476 || 43-8 | 42-7 || 0-0 0-5 | Linear eirri to E. 18 0| 29-480 | 49-1 | 46-9 | 0-0 0:5 19 0] 29-493 | 55-2 | 50-9 || 0-0 0:5 20 0] 29-493 | 57-6 | 52-9 || 0-0 0-5 21 0] 29-489 | 57-5 | 52-7 || 0-3 0-8 22 0] 29-480 | 59-5 | 52-9 || 0-0 3-0 23 0|| 29-472 | 60-3 | 52-0 || 0-0 3-0 23 0 0O|| 29-471 | 62-3) 53-7 || 0-3 WwW 1-3 1 0] 29-457 | 63-9 | 54-2 || 0-3 1.5 PemOniee 2944-7 Ne 630 | Aaa een PM act ae Cumuli, chiefly on hor. : cirri. 3 0]| 29-438 | 63-7 | 52-8 || 0-6 WSW. 7-0 | Cumuli on hor.: cirri: cir-haze. 4 0|| 29.434 | 61-6 | 52-7] 06 | wsw 9.0 ld. : jana ads 5 0] 29-418 || 60-0 | 52-1 || 0-3 7-0 6 0] 29-386 | 60-8 | 53-0 |) 0-3 7-0 Id. 7 0] 29.356 | 58-8 | 51-9 || 0-3 10-0 8 0|| 29-322 | 56-5 | 51-9 || ...... 10-0 | Scud. 9 0] 29-288 | 55-6 | 52-1 || 0-3 10-0 | Id. HOMEOIOORO AO | hal FOS Wesecee ch We ees 25 23 0|| 29-207 57-0 50-4 1-8 9-5 | Cumuli. 27 8 2] 29-930 | 55-9 | 50-1 || 0-6 | WNW? 7-0 | Fine cir.-cum. radiating from NW. 28 8 30] 29-647 58-7 | 57-0 2-0 Sw. SW : 0. 10-0 | Seud: cir.-cum. 29 8 35|| 29-707 || 55-5 | 49-5 0-8 Ww W :0. 8:02} Scud: cirro-strati: cirri. 120 0} 29-382 | 51-7 | 49-9 | .-.--. 10:0 | Scud: cirri: light rain. 21 0} 29-386 50-0 | 49-0 || .-.--- ' 10:0 | Rain. 22 0| 29-386 51-0 | 49-3 || --.-.. 10-0 23 0]| 29-395 50-4 | 47-8 |] «+++. 10-0 | Seud: cumuli. 29 0 0 99.398 52-7 AQr marae oe oil be 9 ee iifadesirts 1 0] 29-408 52-4 | 49-6 0-3 10-0 2 0] 29-415 55:3 | 51-4 0-5 9-9 | Seud: cumuli: rain. 3 0] 29-436 55:2 | 50-9 || 0-0 8:0 | Cumuli: cirri. 5 0} 29-465 56:9 | 51-7 1-0 6:0 | Cum. : cir.-cum. : cir.-str. 6 0| 29-501 53-7 | 50-9 1-0 9-5 | Cumuli. 7 0} 29-530 | 53-0 | 50-0 | 0-2 9-5 | Cumuli: large cirro-cumuli. 9 0] 29-561 Ale Aes A eC eter AseeN fer LMR te 2D. GM BOAO AM ce et CTE ae | | | So hr eee 1. Ol, BOGOR 2 a Ay EO Rae a | a pete 0) 29°636 56-5 52-9 0-0 7-5 |Seud: rain. 20 O| 29-382 50-6 | 49-6 0-0 10-0 Id. Zi Olll GOB eal aarsahell caneee olllbecouns sini iinet ne, acre 22 0]| 29-345 56-6 54-0 0:0 10-0 23 0|| 29-329 60-0 PTET Meteciiscetiie ite Wet a oe 4 0 0} 29-308 | 59-9 | 57-1 || 0-0 10-0 | Seud: light rain. 1 0] 29-286 59-9 Bai alll Batic Aan MM enna || ecg 0) nn (2 2 0}\ 29.261 59-9 58-0 || ...-s- 10-0 | Seud. 3 0] 29-237 | 64-4 | 62-1 || 0-0 SW. 10-0 | Id., moving quickly. 4 0]| 29-222 63-1 59-5 0:3 10-0 5 0]|| 29-200 63-8 | 59-2 || 0.4 10-0 | Cumuli: thick cirrous haze. 6 0] 29-190 62-0 57-6 1-5 10-0 Tak: id. 7 0O|| 29-166 61-5 58-0 0-3 10-0 | Seud: rain. 7 845)|| 29.438 53-7 | 52-0 0-8 8 : 10-0 | Indefinable mass: showers. 18 840]|| 29-716 || 57-1 | 55-4 | 0-8 RSE, 10-0 | Scud: ecirro-cumuli: linear cirri. 2010 0| 29-629 | 52-5 | 50-6 || 0-8 10-0 11 0] 29.637 | 52-6 | 50-3 |] 0-5 9-8 | Breaking to N. MAG. AND MET. OBS. VOL. I. 114 TrermM-Day AND ExTRA METEOROLOGICAL OBSERVATIONS, JULY 20—SEPTEMBER 2]. 1842. Gottingen oe eens WIND. STATE OF THE Sky. Mean Time 4 : a Girnectetl mated | Direction, | C1o0ds moving a of eee - Observation. Dry. Wet. ees from Gintie. pecies oO ouds, &. da; hs a: in. £ ‘i 0—6. 0—10. July 20 12 0] 29-648 | 52:0 | 49-6 || 0-2 10-0 13 0O|| 29-645 |} 51-8 | 50-3 || 0-0 10-0 14 0] 29-637 || 51-6 | 49-9 | -..... 10-0 15 0} 29-634 | 51-4 | 49-4 | 0-0 10-0 16 0] 29-623 | 51-4 | 49-4 ] 0-3 9-0 17 0} 29-619 || 50-5 | 49-0 || 0-0 7-0 | Cirro-cumuli 18 0] 29-620 | 53-7 | 50-4 || ...... 2-0 Id. cirri. 19 0] 29-613 | 56-0 | 51-6 || 0-3 2-0 | Loose cumuli: cirri to N. 20 0|| 29-616 || 56-6 | 52-7 | 0-3 | Nby E. 2-0 | Cumuli: haze to SE. 21 O|| 29-621 || 56-0 | 52-0 | 0-3 N by E. 3-0 22 0| 29-614 | 57-4 | 51-9 || 0-3 N by E. 3-0 23 0 || 29-627 58-6 | 52-9 0:8 N by E. || N by B: ENE: 0. 6-0 | Two currents of loose cumuli: cirro-cumul July 21 0 O| 29-643 | 58-3 | 52-2 || 1:0 | NbyE. 4-0 | Loose cumuli. ! 1 O|| 29-646 || 58-6 | 52-6 || 1-5 N by B. 4-0 Id. 2 0] 29-649 || 58-8 | 52-7 || 0-5 N by E. 9-0 Id. 3 0] 29-646 || 57-7 | 51-9 | 1-0 N by E: NNW. 7-0 | Scud: cumuli. 4 0/|) 29-650 || 60-0 | 53-0 || 0-5 5-0 Id. 5 0] 29-651 || 58-0 | 50-9 | 0-5 2-0 6 0] 29-659 || 58-8 | 51-7 || 0-5 2-0 Id. | 7 O|| 29-667 || 57-1 | 51-0 | 1-0 N by E. 1-0 Id. 8 0] 29-682 | 55-0 | 49-5 || 0-8 1-0 Id. 9 0] 29-697 || 51-8 | 47-4 || 0-5 N by E. 1-0 | Piles of craggy cumuli from N. to SE. 10 O]|| 29-713 || 51-6 | 47-6 |] 1-3 N? NNE 4-0 | Mass of loose cumuli. Aug.19 6 0 || 29-569 || 67-1 | 63-8 | 0-0 10-0 | Cirrous clouds and haze. 7 0} 29-521 || 67-6 | 62-7 | 0-2 SSW 10-0 | Loose cum.: cir.-haze. 8 0] 29-523 || 65-6 | 62-3 | 0-0 10-0 | Cirrous clouds and haze. Aug.2610 0|| 29-847 || 54-9 | 53-2 || 0-0 10-0 11. 0]| 29-852 | 54-9 | 53-1 || 0-2 NE. 10-0 12 0} 29-851 | 54-8 | 53-0 || 0-2 NE. 10-0 13 0} 29-853 || 54-9 | 53-0 || 0-2 NE. 10-0 14 0]| 29-850 || 54:9 | 53-5 | 0-0 10-0 15 0] 29-847 | 55-0 | 53-7 || 0-0 10-0 16 0} 29-841 |} 54-9 | 53-6 || 0-0 10-0 17 0] 29-838 || 55-0 | 53-7 || 0-0 10-0 18 0|| 29-847 | 55-2 | 53-5 |) 0-1 10-0 19 O|| 29-853 || 55-0 | 53-3 || 0-2 10-0 20 0} 29-861 | 55-6 | 53-4 || 0-3 NE. 10-0 | Seud 21 O| 29-866 || 56:5 | 53-5 || 0-5 NE. 9-9 | Id. : cirro-eumuli. 22 0|| 29-866 || 58-1 | 54-8 || 0-6 8-5 | Id: id. 23 0|| 29-864 || 59-0 | 54-8 | 0-3 NE. S:Ounnildian: id. Aug.27 0 0O|| 29-857 60-6 | 55-7 0:3 NE. 8-0 IGE id. 1 0} 29-850 | 61-6 | 56-0 || 0-3 NE. (0) | IGEe id. 2 0]) 29-849 | 63-9 | 57-7 || 0-8 NE. 5:0 | Id.: id. 3 0] 29-848 63-7 | 58-1 0-8 NNE. 3-56 4 0] 29-841 62:9 | 57-1 0-3 NE. 4-0 5 0} 29-839 63:8 | 57-0 0-3 NNE. 5-0 6 0] 29-837 || 62-6 | 56-4 | 0-5 NNE. 9-0 | Patches of scud : loose cumuli. 7 0} 29-846 | 60-5 | 56-0 || 0-3 NNE. 8-0 IGS id. 8 0O|| 29-858 57:9 | 53-8 0-0 E. 6-0 | Loose cumuli. 9 0} 29-868 | 54-5 | 52-4 | 0-0 4-0 | Cirro-cumuli. 10 O]] 29-872 | 53-7 | 51-7 | 0-0 9-7 Sept. 2 9 0] 29-819 | 63-0 | 61-2 }| --.--- 10-0 | Scud. Sept. 2019 0|| 29-302 | 41-9 | 41-3 || 0-0 10-0 | Homogeneous mass: light mist. 20 0] 29-312 ) 43-4 | 42-8 || 0-0 Bh. 10-0 | Scud, &c.: heavy mist. 21 0] 29-321 | 44-4 | 43-8 || 0-0 10-0 | Homogeneous : rain since 208 30™. 22 0]| 29-342 || 45-8 | 45-4 || 0-0 E:N. 10-0 | Two currents of scud : light rain. 23 0|| 29-346 | 49-0 | 48-0 || 0-0 NE ? 9-5 | Scud: nimbi?: smart shower. Sept.21 0 0] 29-338 || 51-8 | 49-7 || 0-2 Various. 5-0 | Scuds: cir.-cum : cum. 1 O}} 29-331 54-9 | 52-9 || 0.2 NNE. ||NNE:SW:WNW.| 4-5 | Seud: cumuli. feERM-DAY AND EXTRA METEOROLOGICAL OBSERVATIONS, SEPTEMBER 21—Noy. 19. 1842. 115 4 THERMOME- WIND. STATE OF THE SKY. tingen Banro- TERS. on Time s of mee ee . . Clouds moving eae . ation Corrected. Dry. Wet. Fes a Direction. rag oy S Species of Clouds, &e. a th ‘ta. in. Mi 5 0-6. 0—10. 21 2 O|] 29-331 56:0 | 50-7 0:3 NE. NE. 3-0 | Seud : cumuli. 3 0|| 29-327 56-1 | 49-8 0-6 NE. S: various. 6-0 igi, id. : cirri. 4 0|| 29-329 || 55:5 | 49-9 || 0-3 ENE. N by B: NE: S. 7-0 | Id.: cirro-cumuli. 5 0|| 29-332 54-1 | 49-5 0:3 NE. NW : SSE. 8:0 | Two currents of cirro-cumuli: cum. on hor. 6 0 29-338 52-7 49-0 0-2 7-5 Send: large loose cir.-cum, moving very slowly: cum. 7 0] 29-350 | 49-6 | 48-4 0.0 NH? 6-0 | Scud: cirro-cumuli : thunder to S. at 6 30™, 8 0] 29-352 || 46-5 | 45-8 0-0 5:0 | Cirro-cumuli. 9 O|| 29-354 | 45-4 | 44-8 | 0-0 9:0 | Cir.-cum. to E.: heavy cum. to W. 10 0} 29-360 || 46-8 | 46-2 0-0 NE. 9:0 | Cir.-cum.: cumuli on hor. 11 O|| 29-364 || 47-0.| 46-3 | 0-0 NE. 8:0 | Cirro-cumuli: scud. 12 0O]|| 29-361 43-8 | 43-6 || 0-0 NE. 8-0 | Scud and loose cumuli. 13 0/|| 29-361 || 44:0 | 43-5 || 0-0 NE. 75 Id. 14 0|| 29-365 || 44-2 | 43-8 |) 0-0 NE. 6:5 Id. 15 O]|| 29-349 || 45-2 | 44-6 || 0-0 NNE. 7-0 Id.: cum. on NE. hor. 16 0O|| 29-345 || 46-3 | 45-4 || 0-0 NNE. 9-0 Id. : id. 17 0] 29-344 | 45-4 | 44.9 | 0-0 N. 6:0 | Large cirro-cumuli and cumuli. 18 0O|| 29-341 || 45-8 | 45-6 || 0-0 NE. 9-7 | Scud: cir.-haze. 19 0O|| 29-346 || 48-4 | 47-0 | 0-0 NE: SSE. 9-7 | Two currents of scud : cir.-haze. 20 O|| 29-345 || 49-9 | 47-9 || 0-0 NE: SSE. 10-0 Gh 3 id. 21 O}| 29-336 51.8 | 48-9 || 0-3 N. N. 8-0 | Seud: cirri: much cirrous haze. 92 0|| 29-345 || 52:7 | 49-3 | 0.5 N. N. fF 10-0 | Seud. 23 0|| 29-344 | 54:0 | 48-6 ] 0.5 iN 10-0 | Cumuli on hor.: breaking. 2 0 O|| 29-339 || 54:0 | 48-8 | 0.5 N. 10-0 Jee id. 1 O|| 29-336 || 54-9 | 49.3 | 0.5 N. N. 10-0 | Seud: much ecirrous haze. 2 0O|] 29-333 || 55:0 | 49-1 | 0.5 N. N. 10:0 | Id.: id. 8 0]| 29-313 || 55-1 | 49.6 | 0.5 N. 10:0 | Id.: id. 4 0]| 29-301 | 54-2) 49-6 | 1-0 10-0 | As at 3, a few drops of rain. 5 0|| 29-297 || 52:9] 48-5 | 0.3 N. 10-0 | Scud: rain. 6 0] 29-295 | 51-1 | 47-8 |) 0.3 1O@ | licks ick 7 O|| 29-283 || 50-1 | 47-1 0-8 N. 10-0 Id.: light rain. 8 0 29-284 48-9 | 46-8 0.4 N. 10-0 Id. 9 0|| 29-271 48-5 | 46-6 || 0-5 NNW. 10-0 Id.: smart shower. 10 0} 29-252 || 48-4 | 46-8 || 0-5 N?¢ 10-0 | Id.: heavy rain. MON O9°499 WN 47.9 | A4-G.N) cece | H tar aie 910 0} 29-294 | 34-4 | 31-5 | 0-4 WNw. 1:0 | Linear and woolly cirri: cum. on hor. 11 0} 29-287 || 32-8 | 30-6 || 0-5 | WbyN. 0-5 | Clouds on horizon. 12 0|| 29-296 || 33-2 | 30:5 || 0-4 WNW. 0-3 Id. : cumuli 2 13 0O|| 29-314 || 32-6 | 30-1 0-3 | W by N. 0-0 14 0|| 29-316 || 30-6 | 29-4 | 0-0 0-0 15 0} 29-311 || 30-1 | 28-8 | 0-3 W by S. 0-0 | Cumuli on NE. hor.: lunar corona. 16 0O| 29-314 || 27-5 | 27-3 | 0-0 0-0 Id.: id. 17 0|| 29-316 || 27-2 | 26-6 || 0.0 0-0 | Lunar corona. 18 0|| 29-328 || 29-7 | 28-1 | 0-0 0-0 | A few clouds on E. hor. : faint corona. 19 0] 29-331 || 27-2 | 26-6 || 0-0« 0-0 20 0|| 29-340 | 29-7 | 28-3 | 0.0 1:0 | Heavy cumuli on E. hor. 21 0O|] 29-354 || 33-5 | 30-9 || 0.0 1-0 Id. 22 0] 29-360 || 34-9 | 33-0 || 0-3 |SW by Ww. 1-0 | Fine cumuli on E. hor. : cir.-cum in zen. 23 0]) 29-377 || 39-5 | 35:3 || 0-3 W byS. N by W: W. 2-0 | Loose cum.: loose cir.-cum.: towering cum. 0 0 O| 29-385 |} 41-0 | 35-6 || 0-5 | N by Ww. NW. 1-0 | Cumnuli round horizon. [on. EK. hor. 1 O|| 29-385 || 41-0 | 35-0 || 0.5 N by W. WwW. 1-5 Id. 2 0] 29-397 || 41-7 | 35-5 || 0-8 | N by W. Nw. 2:0 Id. 3 0|| 29-394 42.2) 35-7 0-7 NW? 1:5 Id. 4 0|| 29-412 | 41-7 | 35:5 | 0-3 |NWbyN. 1-5 Id. 5 0|| 29-432 || 39-5 | 34.4 || 0-3 NNW. 2-0 | Cumuli on NE. and S. hor. 6 0|| 29-469 || 34.3 | 30-9 | 0-3 NNW. 2-0 Id. 7 0O|| 29-487 || 33-5 | 30-9 || 0-0 0-3 Id. 8 0|| 29.490 || 33-0 | 30-6 || 0-0 0-3 Id. 9 0] 29-529 || 34.4 | 31-4 | 0-3 NNW. 0-3 Id. 10 0|| 29-553 || 32-4 | 29-8 || 0-3 | N by W. 0-3 Td. MEO RIS SOSA au eae Ouest RM Ri ee Se a 8 0] 29-475 | 46-6 | 45-6 || 0-5 10-0 | Wind rising. 116 TERM-DAY AND ExTRA METEOROLOGICAL OBSERVATIONS, Nov. 25—Dzc. 22. 1842. Géttingen THERMOME- ANEMOMETER,. STATE OF THE Sky. = BarRo- TERS. Mean Time of Conese Bed ieee Direotion |" Clouds moving oe of Species of Clouds, & gece Daye | Wet “leer |enew, |. ae wom Clouds. és ao a, ih., aM: in. 2 e lbs. Ibs 0—10. Nov. 2510 0|| 28-641 41-2 | 39-8 || 1-5 | 0-5 ENE, 9-5 | Seud. 11 O| 28-644 40-9 | 40-0 | 0-5 | 0-0 8-5 Id. 12 O| 28-646 41-6 | 40-4 ||0-0 | 0-0 10-0 Id. 13 0|| 28-646 41-3 | 40-7 ||0-0 | 0-0 10-0 Id. 14 0} 28-644 | 40-5 | 39-9 | 0-0 | 0-0 10-0 Id. : light shower. 15 0} 28-645 39-1 38-7 ||0-0 | 0-0 8-7 Id. Ny 16 0O|| 28-659 38-0 | 37-6 |0-0 |0-0 5:0 Id. 17 0] 28-662 36-7 | 36-0 ||0-0 |0-0 7-0 Td. 18 0|| 28-671 37-3 | 36-6 ||0-0 | 0-0 10-0 Id. 19 0} 28-674 37-2 | 36-6 ||0-0 |0-0 10-0 dar 20 0 | 28-678 | 37-4 | 36-7 ||0-0 | 0-0 SE by E. 9-9 Id. : hazy : red to H.: showers. 21 OO} 28-686 | 37-9 | 37-4 || 0-3 | 0-0 SH? 9-9 This) > ads: cum. on E. hor 22 0} 28-694 38-5 | 37-8 | 0-0 | 0-0 9:0 | Sky to S. 23 0] 28-700 | 39-0 | 38-5 ||0-0 | 0-0 8-0 | Sky im zen. : heavy clouds in hor. Nov. 26 0 0O|| 28-713 39-7 | 39-1 ||0-0 |0-0 SE? 10-0 | Seud. 1 Oj) 28-711 39-7 | 39-2 ||0-0 |0-0 10-0 Id. : hazy 2 SON 283711 40-2 | 39-5 | 0-0 | 0-0 10-0 fds) id: 3 0] 28-710 40-5 | 39-3 | 0-0 |0-0 10-0 Id. 4 0] 28-725 | 40-5 | 39-5 ||0-0 | 0-0 S by E. 9-7 | Cirro-cumulous scud : sky to S. 5 0O|| 28-731 39-9 | 39-3 ||0-0 | 0-0 10-0 | Dense scud. 6 0} 28-743 40-5 | 39-4 | 0-3 |0-3 ESE. 10-0 Id. 7 0))| °28:759 40:5 | 39-1 ||0-0 | 0-0 10-0 Td. 8 0} 28-775 40:0 | 39-4 || 0-0 | 0-0 10-0 Ide: rain. 9 0} 28-795 39-9 | 39-4 | 0-3 | 0-0 10-0 | Very dark. 10 O|| 28-814 39-8 | 39-0 || 0-3 | 0-0 7-0 ld. Dec. 9 7 0] 30-188 | 44.5 | 44.2 |lo.0 |0-0| Nee 10-0 Dec. 20 20 0|| 29.979 || 48-0 | 46-6 || 3-3 |0-0 WNw. 3-0 | Fine cirri: cirrous cirro-cumuli. 21 0} 29-979 || 47-2 | 43-6 ]0-5 |0-3 SSW WNW. 1:5 | Fine cirrous clouds: mottled cir. : cir.-s 22 0) 29-987 || 44-9 | 43-2 ] 0-8 | 1-5 SSW WNW. 3:0 | Cirro-cum. : varieties of cirri. 23 0] 29-993 || 47-4 | 44-9 0-8 |0-5 | SSW WNW. 8-0 | As before: cymoid-cirri at 23" 30™, i Dec. 21 0 O|| 29.984 || 48-6 | 45-8 || 1-0 | 0-8 SW. Ww. 9-0 | Large woolly cir.-cum. : cir.-str. : cir. 1 0]| 29-978 || 49-9 | 47-2 || 1-5 |0-8 | SWv WwW? 10-0 | Scud: semi-fluid cir.-str.: sky trouble 2 0]) 29-963 | 50-5 | 47-4 || 1-5 | 0-5 SW. 10-0 | Id.: cir.-clouds unevenly spread. 3 0} 29-938 | 50-8 | 48-8 | 1-3 | 1-3 SW. |WSW:SW:WNW.| 10-0 | Scuds: thick cir.-clouds. 4 0] 29-917 || 51-3 | 49-4 || 2-0 | 1-3 SW. Sw: W: W. 9:0 | Id: id. : sky troubled i 5 0} 29-895 |} 51-3 | 49-6 | 1-8 | 1-3 SW. Sw. 9:0 | Id.: id. 6 0O]| 29.893 50-8 | 49-6 || 2-0 | 1-0 SW. SW. 10-0 Id. : dark. 7 Oj 29.893 51-6 | 50-2 | 1-8 |0-8 SW. 10-0 | Quite dark. 8 0} 29-883 || 51-9 | 50-4 | 1-3 | 0-5 Sw. 9-9 | Dark to N.: scud ?: cir.-haze. 9 0O]|| 29.844 51-7 | 50-1 | 2-3 | 1-3 |SW by W. 4:0 | Dark. 10 0] 29-830 || 52-1 | 50-4 || 2-0 | 1-8 SW. Sw. 10-0 | Scud: cirri radiating from SEH. 11 0} 29.824 52-1 50-4 || 2-3 | 0-8 SW. 8-0 Id.: sky in zenith. 12 0) 29:757 50-3 | 48-4 | 2-0 | 1-5 SW. SW. 8-0 Id. 13 0] 29.730 49-6 | 47-4 ||2-8 | 2-5 SW. 9-0 Id. : cirri. 14 0] 29-753 | 49-0 | 46-6 ||3-0 | 1-8 SW. SW. 3-0) | Id 15 0) 29.734 49-0 | 46-5 || 2-8 | 2-5 SW. 8-0 Id. 16 O]| 29.727 49-0 | 46-6 || 2-8 | 1-0 SW. 10-0 Id. 17 0} 29-699 || 49-1 | 46-7 | 1-8 |1-3 | SW byS 9-8 | Dark scud. 18 0] 29-654 | 48-5 | 45-6 || 3-3 |3-3 SW. 5-0 | Cirrous clouds on horizon. 19 0} 29.617 48-6 | 45-6 || 3-0 | 2-3 SW. 5-0 Id. 20 0} 29.606 49.4 | 46-4 || 4-5 | 2-0 SW. 10-0 | Seud. 21 O} 29.585 49.4 | 46.4 || 3.0 | 2-0 SSW SW. 10-0 Td. 22 0} 29-568 | 48.6 | 46-6 |/3-5 | 1-8 SW. Sw. 10-0 | Id.: cirrous clouds. cloud 23 0|| 29-526 || 49.2 | 47-1 | 2.8 |2.8 SW. 9-9 | Smoky scud very low and quickly : cir) Dec. 22 0 0] 29.482 | 49.5 | 47.2 | 4.8 | 5-3 Sw. Sw. 9-7 | Scud moving rapidly. | 1 0} 29-457 || 49.3 | 47.1 || 5.0 | 3-0 SW. SW. 9-0 | Scud: cirrous clouds. 2 O}| 29-448 50-5 | 47-4 || 7-0 | 3-0 SW. 1-5 as id. 3 0} 29-431 | 49.4 | 47.1 | 3-8 | 2.8 SW. 8-0 | Heavy rain: sky to N. 4 0| 29-402 || 48.6 | 45.4 14.5 | 3.3 SW. 1-5 | Cumuli on horizon. 5 0} 29.404 47-9 | 45-1 | 3-5 | 1-5 SW. 10-0 | Seud: light rain. 6 0] 29-392 46.4 | 43.7 || 2.5 | 1-5 10-0 Id.: dark. 7 O| 29.384 44.6 | 42.8 |2.3 |1-3 2-0 8 0] 29-354 || 44.8 | 42.5 | 5-5 | 2-0 SW. 8-0 | Sky near horizon. 9 0O]] 29.334 44-6 | 41-7 || 2-5 | 2.0 7-0 | Scud. 10 0] 29-303 || 43-8 | 41-5 ||5-3 |4.3 7-0 | Id.: light rain. REMARKS ON THE WEATHER. May—DeEcEMBER, 1842. MAG, AND MET. OBS. VOL I. 118 lal 12 13 15 16 7 18 19 20 h d h 20—2 5. 20—s 5. 20—4 5. 20—5 8. 20—6 8. 20—7 5. 20—9 5. 20—-10 5. 20 eres 20> aor 20=— smo: 20—14 6. 20=-l6No: 20=—17 13: 20—18 5. 20—19 5. 20—20 5. 20=—2 lb: REMARKS ON THE WEATHER. 1842. MAY. 205. Clouds beginning to break. 23. Sky milky: a few cirro-strati to S. 2%. Cumuli, separated into distinct masses. 5", Cumuli, principally on W. and NW. horizon. 20", Sky milky in E., almost becoming cirro-strati. 23". Detached cumuli rising in SE. : fine bands of cirro-cumuli stretching from S by E to NW., forming ares of large radius. 2". Large masses of cumuli rising from S.E: extremely hazy to SE. 3". The upper strata of cumuli sepa- rating from each other approach nearer and nearer the zenith, each cumulus having a cirrous tail, which first points W., then NNW.: large masses of cumuli from the E. hurrying past to NNW., while the cirro-cumuli are slowly progressing across the zenith to ENE. 5". Cumuli, looking very electric, small spaces of milky blue seen between. 20", Heavy black cumuli, 235. Skyseenin NW. 2. Heavy detached cumuli. 65°. Cumuli round horizon : a few linear cirri. 20%. Light drizzle of rain. 23. Cumuli, tendency to openin SE. 2". Masses of black clouds. 8". Light rain. 205, A small opening in SE. by E. 23, Cumuli and scud: heavy shower. 2". Detached cumuli and scud. 5". Black cumuli and scud. 8". Rain. 205, Cumuli and scud. 23%—2". Heavy rain. 5". Heavy rain: clouds moving rapidly : oc- casional pieces of sky. 20". Sky in N. and W. horizon: cumuli, &c.: linear cirri above stationary. 23%—85}, Cumuli. 20", A few linear cirri to E, 235. Detached cumuli, principally to SE. 2"—55, Cumuli. 20", Sky mostly covered with diffuse cirri: a few cirro-strati: the wind does not extend to the cirri: one or two diffuse cumuli, rising from 8S. and SW. 23", Two-tenths of the sky covered with cirro-cumuli: four-tenths cumuli: and one-tenth thin cirri, 2°. Electric-looking cumuli lowest: diffuse cirro-cumuli above stationary: linear cirri highest: stationary. 5°. A heavy shower of rain. 204, A smart shower, raining from 20" till 23". 2, Heavy cumuli, moving very slowly : diffuse cirri above stationary. 5", Cumuli. 20". Principally cirro-cumuli: a few connected ranges of cumuli: to the North the ill-defined cirro-cumuli form a great bay, almost half an ellipse ; there is a portion of a similar bay to the S. of W. 23". Diffuse cirro-cumuli: the sky almost covered with a haze : a few cirro-strati: one or two cumuli rising. 2". Irregular cirro-cumuli: masses of cumuli rising from S., SE., and SW., proceeding slowly towards NW.: sky very hazy: the sun projects a faint shadow. 5". A few cumuli below quite detached : like buttermilk above, and in many places like that liquid agitated. 20%. Clouds motionless: a large kind of flaky cirro-cumuli: the sky covered with haze, in some places approaching to cirrus, towards the East it is quite milky : the sun projects a faint shadow. 235, Cumuli round horizon, excepting about E., where there is a dense haze: the whole sky is very milky : the sun projecting a moderately dark shadow : occasionally a puff of wind. 55. Sky covered with haze: no clouds. Sky not so milky as on the last three days, 23". A few cumuli on NNW. horizon, and a few patches of cirri. 2. Cumuli on WNW. and SSE. horizon. 5. Cumuli on S. horizon. 20, Overcast. 23°. Cumuli, disappearing rapidly. 2. Very detached cumuli round horizon : a mass of cirri to N., with the concave side to SW. : faint linear cirri, &c. over the sky. 5. Cirri, principally to S., with the concave side to NW. 205. Overcast. 23". Cumuli in the zenith, about four-tenths of ill-defined cirro-cumuli: sky hazy: clouds breaking. 2%. Principally cumuli, and a few cirro-strati on horizon: a few patches of ill-defined cirro-cumuli in zenith. 5. Ranges of cumuli round horizon from SE, round by S. to NE.: a few patches of cirro-cumuli. Overcast throughout the day. 205, Cumuli: mixed and linear cirri to N., and in zenith. 23". Cumuli much dispersed : cirri above stationary. 2. Principally heavy cumuli rising in S., proceeding North, looking very electric in S. and E. 5", Cumuli and nimbi: rain to E. and 8S. 20, A few cumuli: large diffuse cirro-cumuli stationary. 23". Cumuli: a few patches of sky toN. 2, Cumuli. 55. Overcast. The column “ Species of Clouds, &.” in the Meteorological Observations after May 1. 1842, is an abstract of the Remarks given here, which are frequently too lengthy to have been printed along with the other Meteorological Observations. d 22 23 24 25 26 27 30 31 — h d 20—23 20—24 20—25 20—26 20—27 10—28 20—30 20—31 20—31 2—1 20—2 20—3 20—4 20—6 20—7 20—8 20—9 20—10 5. 5. 5. 23. eu REMARKS ON THE WEATHER. 1842. 119 MAY. 204, A smart shower beginning to fall. 23%. Heavy rain began at 22" 45™. 2h. Cumuli, principally on horizon. 5°. Cumuli. 20". Cirri and cirro-strati: a few cumuli appearing to SE. 23". Principally cumuli round N. horizon, with large black watery looking masses rising from S.: sky quite covered with a dense haze: the sun projects only a faint shadow: a few clouds like cirro-stratito S. and E. 2", Over- east. 55. Like cirro-strati, with cumuli near horizon, calm, all as if arrested in their progress. 20%, Overcast. 23. Cumuli: clouds opening to S. 2. Cumuli: linear cirri above stationary : clouds looking electric. 5%. Sky covered with nimbi: loud thunder : brilliant flashes of lightning, followed by heavy rain: quite dark to S. 20. A dense mist lies over the ground. 23", Heavy black cumuli: clouds still looking elec- tric. 2, Cumuli moving from S., and lying in thick ranges round horizon. 5*. Black cumuli: sky to NW. 20%. Overcast: foggy. 23°. Dark cumuli: a speck of blue to NE. 2, Cumuli: beautiful ranges of cumuli round horizon: the sky in patches here and there. 5", Cumuli in ranges round horizon : beautiful vertebrated cirri lying from SW. across E. of zenith to NE. ; the lines of cirri beautifully fine, like some woven wool; these appear stationary, or nearly so, while a lower current carries parallel flocks of cirri moving to NE., but lying at right angles to the direction of the others, thus giving the appearance of vertebra. 10", Cirri and cirro-strati. 11°. Principally linear cirri to N. pointing NNE. 12. The same directed to N. 13". The same radiating from N. 14?. The same moving off to E. 16%. Cirro- strati and cirri. 175. Cirro-strati to E. 185—19*. Clear. 20". Overcast: light breeze. 21%. Clearing : still cloudy : wind as before. 23%—2, Cumuli. 35. Cumuli in ranges round horizon. 4h__5b, Cumuli, &c. on horizon. 6%. Cumuli and cirro-strati, 74. Cumulo-strati and cirro-strati. 85, Cirro-strati over two-tenths of sky, cumuli one-tenth. 20%, Watery looking cumuli rising from SW. and creeping across to NE. : cirro-strati and cirro- cumuli to NE.: very rainy like to SE. 235. As at 204, a few specks of cirro-cumuli. 25. Cumuli and nimbi: showers going round: masses of feathery cirri stationary. 5". Cumuli and nimbi: a light shower passing. 205—23. Cumuli. 2". Cumuli: a few fine linear cirri above. 5%. Watery looking cumuli. 20%. Beginning to break: cirri and cirro-strati. 23". Cumuli and linear cirri. JUNE. 2". Cumuli. 5. Scud: light showers passing over. 20", Cirri to E.: a few detached specks of cumuli rising from SE, 235. Cumuli, with a few reticulated and other cirri, all moving slowly. 2, Cumuli scattered over the whole sky: a few cirri. 55. Detached cumuli: a few cirri. 20", Clear. 235. Cirro-strati edged with cirri and cirro-cumuli: a few cumuli. 2". Cumuli. 5°. Cumuli and a few diffuse cirri. 20". Cirri nearly linear, proceeding from large cirrous nests: a few specks of cirro-cumuli. 23". Detached cumuli: mixed and linear cirri and cirro-cumuli above. 2, Cumuli near horizon to S. and E.: sky to N. and W., covered with cirrous haze: cirro-strati and cirro-cumuli. 5%. Clouds and haze, the sun’s rays appear through the haze so as to cast a faint shadow. 20". Breaking to E. 23, Diffuse cumuli. 5%, Cumuli. 20%, Thick mist: trees definable at about half-a-mile distant. 23. Cirri: a few cumuli to S. 2», Cumuli: sky nearly covered with cirrous haze. 5". Cumuli: sky still hazy, but cirri less distinct. 20. A few specks of ill-defined cirri to SW. 235. Cirro-cumuli and linear cirri, 2%. A few detached specks of small cumuli, with a streak of cirro-stratus. 5%. Qusty. 205, Heavy mist: trees definable at about 1 of a mile. 23". A few faint streaks of cirri to S. and SE. 2". A speck or two of cirrus to SW. 5". Sky on horizon brownish, about 10° alti- tude, milky, and so up gradually to the deep blue of the zenith. 20%, Principally linear cirri to NE. and SE. . 23". Chiefly cumuli from S., round by E. to N., edges ragged: nests of cirri. 2". From NE, to SE. horizon a mass of ill-defined, flat, watery- 120 di Lact oxigen 10 20—11 5. 12 20—13 5. 13 20—14 5. 14 20—15 5. 15 20—16 5. 16 20—17 5. 17 20—-18 5. 19 20—20 4. 20 20—21 9. 21 20—22 7. 22 7—23 9. REMARKS ON THE WEATHER. 1842. JUNE. looking clouds, from which flaky patches rise and are carried to SW. 5". Scud covered the sky within an hour. 20". Overcast. 235. Indefinable mass. 2*—5», Clear. 205, Vapoury cumuli. 235, Clear. 2. Cirro-strati to N. and §.: cumulo-strati to S. 5% Principally cumuli to 8., and cumulo-strati to N. 20", Overcast: light mist. 234, Cumuli and cirro-cumuli, with cirro-strati: hazy to E. and N. 2. Cumuli and cirro-strati: sky hazy : clouds looking electric. 5%. Cumuli: sky in small patches. 205, Cumuli and cirri: sky to N. 23". Detached cumuli two-tenths: cirri two-tenths. 25, Cumuli to S.: cirro-strati to N.: 5" Cumulo-strati and diffuse cirri. 20%, Cumuli to S.: cirro-stratito N. 23. Very ragged cumuli. 2°. Watery-looking cumuli : sky to NE. 5%. Cumuli and cirro-strati. 205, Cumuli: cirri: breaking. 23". Cumuli and cirro-strati. 2". Cumuli. 5". Cumuli: a few cirri. 20", Cumuli and cirro-strati: a few streaks of blue. 23". Cumuli and diffuse cirro-cumuli and cirro-strati: very watery-looking cumuli sailing very low. 2%. Heavy masses of cumuli moving from SW.: cirro-stratiand cumuli above. 5%. Heavy black cumuli: cirro-cumuli above stationary. 20". Quite overcast : clouds apparently moving from about SE.: a few drops of rain. 235. Light showers. 2". Cumuli and nimbi: cirro-cumuli above stationary. 5. Watery cumuli or scud : pitch black to S.: electric looking to E.: cirro-strati above scud to E. stationary. 205. Scud and nimbi. 9" 30™. Cumuli and nimbi: cirro-cumuli above stationary. 23*—04. Cumuli and nimbi: cirro-cumuli and cirro-strati: passing showers at 0. 15. Cumuli and nimbi moving from SSW.: pinnacled cumuli to N,: cirri, &c. above stationary. 2"—3>. Beautifully pinnacled cumuli and nimbi: cirri above stationary: looking very electric to NE.: clouds near horizon dark blue, rising gradually to cumuli of the most brilliant white. 4° 0™. Cumuli and nimbi: thunder and lightning at about 4° of interval: heavy rain; drops very large when they first fell, making a circular spot of from 1 to 13 inch in diameter : hail also about } inch in dia- meter : lower stratum of clouds moving from about E by N.; upper from SSW. ; cirri above sta- tionary ; above the upper nimbi there appears a kind of cirrous mass moving slowly in the same direction. 4° 10™, The lower stratum appears to move from SE.: storm appears most violent to SW. and W.: very loud peals of thunder: a long chain of nimbi appears to move in a circle, com- mencing about NE., and going round by S.to NW. 4% 15™. The lowest stratum appears to carry the other with it, the hazy cirrous mass still moving, however, to NE.: to the SSW. large masses of white cumuli are occasionally seen through the nimbi, and have a beautiful mezzotint appearance through the rain ; they appear stationary. 4° 20™—30™, To the E. masses of cirro-strati are seen: the storm moves off to NW., the lightning is seen very well in that quarter, long forked flashes, extending sometimes from SSW. to NNW. 5%. Storm moved off to NW., and again brewing in SE., where large dark masses of nimbi are seen rising in the white cirrous haze which covers that part of the sky: light rain: distant thunder. 6". Almost an entire mass of nimbi : loud peals of thunder, principally from SSE.: rather heavy rain: thunder about 8° after lightning. 7° 5™, Clouds more in masses than last hour: nimbi: distant thunder, apparently to SE. and SSW., and thence to N. 8 15™, Nimbi, &c. still more broken than last hour: small portion of sky seen in zenith: round the horizon there is that settled appearance so common after a thunder- storm, all the clouds at rest as if becalmed in a moment, and spreading in the lightest tints like yew-tree branches. 8» 45™—55™. Nimbi moving from SE., raining heavily there : a low mass of diffuse cumuli, breaking into a kind of cirro-cumulus, moves slowly from SW. to NE. 20", Linear cirri: cirro-strati and cumulo-strati stationary : round horizon from N. to SE. detached masses of watery-edged cumuli. 215. As at 205, with more cumuli rising. 23°. Cumuli: streaks of cirri round the zenith, crossing at right angles, and pointing NE. and NW. : thin-laced cirri covers four-tenths of the sky. 0> 5™. Cumuli 7 parts; reticulated cirri 2. 2". Cumuli: very scattered streaks of cirrus, seen principally to S. 3". Cumuli: cirrous haze to S.: fibrous cirri to E., pointing WNW. 55. Cumuli moved off to N.; a few to S.: the greater part of the sky covered with very thick cirrous haze (very thick to E.) and cirro-cumuli. 6° 40™. A few cumuli round horizon: remainder of the sky covered with common and linear cirri lying in all — directions, the greater part having their origin to SE., and lying in a sort of curl towards E. 10", Linear cirri to NE., and cumuli to S., cirro-strati to NE. 11", Clouds on horizon: clear d 23 24 25 26 27 28 29 30 He co REMARKS ON THE WEATHER. 1842. 121 JUNE overhead. 12%, Cumuli to S. 13%. Principally large cirro-cumuli. 15". Linear cirri, chiefly to E. 16%. Linear cirri and pure cirri having the concave side to 8. 175. Linear cirri to E. 2%, Cumuli principally on horizon: cirri. 3". Cumuli round horizon, but principally cirri scat- tered over the sky : thick cirrous haze to S. and SW. 4". Cumulion horizon: remainder of the sky covered with cirrous haze: very thick to 8. and SE.: the sun’s rays scarcely penetrate. 65. Cumuli. 8®—9*. Scud. 20%. Cumuli moving quickly : sky very hazy to E. : linear cirri to S. stationary: some of the cumuli very low. 23". Cumuli and haze: linear cirri above: clouds watery and electric-looking : a few drops of rain. 2%—5*, Cumuli moving rapidly : linear cirri : cirro-cumuli and cirro-strati above stationary : cirrous haze to SSW. rising with cumuli. 205. Cumuli in different strata: cirro-cumuli, 23". Scud. 25 Scud: light rain. 55. Heavy rain, (Sunday). The wind changed in the morning from SW.: wind very strong on Saturday night and Sunday. 20". Small watery ragged cumuli moving quickly : a long compact body of cirro-cumuli over two-tenths of the sky. 23%—2". Cumuli. 5". Cumuli, some of them spinning out into cirri and beautiful cirro-cumuli, which, in some places, are formed of little mats of cirrus, fining off to the edge, so as to become mottled or waved cirri: to the E. is one mass of cirrus, in which the lines lie NW. and SE., in other places, to the S. and W. it gets quite thick, so that the separation can scarcely be distinguished. 8" 20™—25™. Most beautiful cirro-cumuli here and there in thick masses, fine near the edges, with bright blue between, all radiating from NW. to zenith, and from SE. where they almost become cumuli. 20%. Scud: light rain. 23", Scud. 5%. Smart shower. 8 30™. Masses of scud moving very rapidly from SW., shewing occasionally speckled or frosted-looking cirro-cumuli above stationary. 20", Ragged cumuli or scud very low and moving quickly: cirro-cumuli and cumuli above. 23>, Scud and cumuli moving quickly : cumuli on horizon : linear cirri in zenith either station- ary or moving very slowly. 2. Scud. 5". Cumuli and scud: long streaks of cirri pointing E. and then §. : clouds electric-looking to E.: the quantity of clouds variable. 8" 35™,. Watery- looking scud edged with cirro-cumuli: large dense masses of cirro-stratus: cirri to 8.: the clouds extend far, having large open spaces within : many of the clouds like large masses of cedar branches. 20". Cumuli creeping along horizon from W.: linear cirri above cumuli pointing E.: many patches of watery cumuli rising from about W., pass over near the zenith moving towards ESE. ; when they approach the meridian they break up into cirrous edges, as if the mass were unravel- ling itself, and then they get quite detached, some parts appearing motionless, some moving quicker than others, and often taking very different directions, some proceeding nearly to E., others moving off to S. or SSE., till at last they are altogether dissipated ; to the SH. patches are occasionally seen forming just as the others vanish ; the clouds near the horizon do not appear to pass through this change. 23". Cumuli, which appear to move from NW. or NNW., but there still appears to be two currents, the upper from about W., and the lower from about N ; when near the meri- dian there is the same tendency to dissipate. 2. Cumuli: the sky hazy: some of the cumuli very ragged, 5°. Cumuli: cirrous haze. 20—30 28. © 20%, Cumuli and cirro-cumuli: linear cirri to NE. 28", Cumuli: hazy to E.: clouds moving h d h 20—24 5. 20—25 5. —26. 20—27 8. 20—28 8. 20—29 8. 20—30 5. Pe N5: 20—2 5. 20—4 5. 20—5 5. very slowly. JULY. 2h, Clouds and haze : cumuli very hazy to E. and §.: electric-looking. 5%. Clouds and haze : thick cirrous haze to W. and S.: cumuli and cirri: low clouds, like patches of scud moving slowly : very black to E.: haze so thick to W. that the sun’s rays scarcely project a shadow; his rays ap- pear like fine cirri in the cirrous haze ; some portions of the cirri might be termed etched, from their scratchy appearanee. 20". Cirri and nimbi: light rain. 23%, Cumuli and nimbi. 2, Cumuli and nimbi: rain: small patches of sky. 5%. Cumuli and cirro-cumuli. 205—2h, Scud. 55. A kind of thick haze and cumuli on horizon. 20". Nimbiand cumuli: other clouds above: light rain, 23". Cumuli: nimbi and scud : a few patches of sky : immense masses of clouds moving rapidly from about SW.: light rain. 2°. Watery MAG. AND MET. OBS. VOL. I. 2H 122 ah ytd) ih 5 20—6 5. 6 20—7 9. 7 20—8 5. 8 20—9 5, 10 20—11 5. 11 20—12 5. 12 20—13 5. 13 20—14 5. 14 20—15 10. 15 20—16 5. 17 20—18 9. REMARKS ON THE WEATHER. 1842. JULY. cumuli: cirri and masses of thick cirro-strata above: to the SE. is a large hazy mass of clouds which becomes almost cirrous on the edges, and is cumulion the top. 5". Cumuli moving rapidly : linear cirri above stationary. 20". The sky covered with a thick cirrous haze, through which a few patches of sky are seen to W.: to the NE. dark cirro-cumuli are seen below the haze, and linear cirri here and there: a few specks of scud or loose cumuli rise from about NNW., and mostly creep along the S. horizon ; a few along the N. horizon ; the haze and other clouds appear stationary. 23". A great portion of the clouds are patches of cirrous haze ; there are also cirro-cumuli, linear cirri, scud and cumuli, 25, Principally ragged cumuli: linear cirri above: hazy cirrito N. and E. 5. Cumuli: a few linear cirri to NE. 205, A confused mixture, apparently breaking to E. 23". Sky covered with a thick cirrous haze: quite milky: cumuli on E. and N. horizon. 25, Haze as before, but more cumuli; the sun projects a faint shadow. 5". Scud and haze: rain. 8" 45™, Clouds like puddledock : occa- sional showers. ; 205. Cirro-cumuli: large masses of ragged cumuli rising from SW.: linear cirri to N. 23, Cirro-cumuli moving slowly : immense piles of cumulo-strati of great length : dark to SSW., where there appears the nucleus of a storm: patches of scud with the cumuli. 2". Cumuli and nimbi rising from SSW.: occasional showers. 5°. Cumuli, nimbi, and cirrous haze: clearing to S.: occasional smart showers. 20%. Large masses of watery cumuli rolling along slowly: in the E. the rounded masses are inclined to the horizon at an angle of 45°, and have a most picturesque appearance : cirro-cumuli seen above: a few patches of sky. 20° 10™, Clouds 9-5. 23. Large masses of cumuli below, while there is a large kind of cirro-cumuli above : the cumuli have great fantastic forms, and are much in ranges: patches of sky. 2. Cumuli and large cirro-cumuli: cumuli in ranges round horizon: about an hour ago beautiful cirro-cumulo-strati were seen. 5". Cumuli, with large cirro- cumuli and cirro-strati round horizon ; the cumuli are lowest and move quickly, the others are sta- tionary. 20", Scud: heavy rain: on the evening of the 10th scud was moving from about W., the lower current being more rapid than the upper. 23°—2. Scud: heavy rain. 5%. Cumuli and seud : clouds more broken : a little sky in zenith: showers lately: the air feels warm. 205. Cirri and cirro-strati to E.: the cirri are on the border of the mass of cirro-strati, and in some places look like foam on a wave; they have their concavity towards the S.: watery-looking cumuli rising from NNW. 23°. Cumuli. 2". Cumuli: clouds in detached masses over the whole sky. 5%. Cumuli, principally on horizon: a few linear cirri to E. 205. Cumuli and scud: rain: sunshine half-an-hour ago. 23, Loose cumuli and nimbi moving quickly : cirro-cumuli above: showers around. 2, Cumuli and scud: cirri and cirrous haze above. 55, Cumuli and scud. 205, Cumuli and scud: linear cirri and cirro-strati to N. and 8, 23". Ragged cumuli and cirrous haze. 2®—5>. Cumuli. 20", Hazy cirri to N., E., and S.: cirro-cumuli and cirro-strati to W.: two or three masses of ragged cumuli. 23". Chiefly linear cirri spread in all directions, almost becoming haze to N. and E. : cirro-cumuli and cumuli moving slowly. 2". Cumuli: woolly cirro-cumuli and cirri: fish-backed cirro-strati. 55. Flat cirrous-edged cumuli moving very slowly from about WNW. 95 35™, Strange looking grey cirro-cumuli creeping up from SW. near to the zenith, and E. and W. of it, sending out small ragged creepers, like the branches of a weeping willow ; the sky to the S. of the zenith is quite covered with this, which becomes quite thick to S., and like irregular cirro-cumuli at 45° alt. 20", Clear: a small patch of linear cirrus to W.: hazy to E. 23", Cumuli dispersed over the sky, except to N., from which a compact mass extends to ESE. 2. Cirrous masses, from which the cirri diverge in all directions ; the greatest mass is to NW. 5%. Cirri in fantastic forms, spring- ing from a thick nucleus to W., and tossed out in all directions ; there is a long feather of cirrus extending 25° to 30°: linear cirri to SW. 20%. Sky covered with cirrous haze and linear cirri, which appear stationary, while masses of loose cumuli or scud moving slowly from about E. cover seven-tenths of the sky ; the sun’s rays just project a faint shadow on paper ; the sky was covered by a confused mixture of cirri on the 17th. 23. Cirrous haze and cirro-strati as before, but more cumuli or scud ; the haze seen through the openings. 2, Cirrous haze as before: cumuli and cumulo-strati. 5°. Less haze: a few cirro- 21 29 31 h d 20—19 20—20 10—20 0—21 20—22 20—23 20—25 20—26 20—27 20—28 20—29 20—30 20—31 REMARKS ON THE WEATHER. 1842. 123 JULY. cumuli, but the greater part of the sky is covered by scud and cumuli. 8" 40™. Seven-tenths of the sky covered with dark heavy clouds like nimbi (but. no rain), moving from ESE., while in the higher strata are cirro-cumuli and linear cirri stationary ; the cirrus becomes like thick cobwebs to h W., while it is quite black to S.: scud below, which appears to move quickest : wind increasing. 5. 20. Scud. 23". Scud, clouds very thick: wind more in gusts. 2. Scud moving rapidly from ENE. : cirro-cumuli above moving slowly in the same direction. 5". Scud: occasional patches of sky. 5. “20%. Light mist, tendency to drizzle. 23"—5", Clouds moving from NE. 5%, Light drizzle. 23. 11. Breaking to N., where there are considerable patches of sky. 17". Cirro-cumuli, 18%. Cirro-cumuli and linear cirri. 195. Loose cumuli anda few linear cirri to N. 20". Cumuli: haze on SE. horizon, 23", Loose cumuli moving from N by E., and another current from ENE., a few cirro-cumuli above, apparently stationary. 10. 0®,—2, Loose cumuli. 3". Cumuli and scud, some with cirrous fringes; one current carries clouds from N by E., and another from NNW. 4", Loose Cumuli. 9°. From N. to SE., one thick pile of craggy cumuli, lighted by the setting sun, giving all the appearance of snowy Alps tinted by his glowing rays. 10%. Large mass of loose cumuli moving from about NNE. 5. 205. A mass of loose cumuli: sky to NW. 23". Loose cumuli: sky principally to NW. 2h. Loose cumuli, better defined than before. 5". Detached cumuli to SE. 5. 20". Undefinable mass. 23%. Clear. 2". A few specks of cumulito SE. and N. 5". Detached cumuli to S. and N. 5. 20%, Flaky cumuli. 23". Cumuli: patches of hazy sky. 25. Cumuli: sky hazy. 5. Cumuli, &., hazy. 5. 30% Loose cumuli on horizon: large cirro-cumuli above and in zenith: clouds breaking, 23, Heavy dark cumuli looking electric to SE.: upper clouds moving very slowly from about NNE. ; lower current rather quicker from SSE, 2. Heavy black cumuli from about SE.: upper current from W.: white towering masses of cumuli: a few drops of rain. 5%. Cumuli and cirro- cumuli, the latter principally to E.: light shower since last observation. 5. 20%. Loose cumuli and cirro-cumuli: linear and other cirri and cirrous haze to N. 23", Very like an approaching storm: a mixture of cirri and cirrous haze: loose and well defined cumuli ; the cumuli are seen as if at rest in the bluish gray mass to E. and W.; the sky has altogether an indescribable appearance. 5%. Nimbi and more heavy black cumuli: rain to E.: scud creeping up slowly from W.: cumuli and cirri to N.: wind just sprung up: a patch of sky to N. 5. 20". A sort of blackish-blue mixture, in some places like cedar branches: a few cumuli seen: a few drops of rain: scud lowest, moving from about NNW. 23, Nearly as before : more long strings of loose cumuli floating from W.: clouds to NE. lying in all directions: occasional patches of sky. 2. More muddled than before. 5". Cumuli principally to E.: patches of cirrous haze or cirro-stratus edged with cirri: looking stormy to E.: at 4° the clouds moving from E., and a smart shower of rain. 7. 20". Loose cumuli, quantity variable. 23°, Heavy loose cumuli: linear cirri above: breaking to N. 2. Cumuli: linear and woolly cirri above, both moving from N. 5%. Ragged edged cumuli: cumulo-stratito N. 6° 45™, Quantity of clouds 5-5: a kind of cirro-cumulous cirri; the cirri are all matted and frizzled, moving from N., but having a sort of lee-way from E.: a lower current from W. carries a mass of smoky cirrous scud, which appears to have a lee-way to S. : masses of cirro-strati rising from SW. : on the NE. and SE. horizon are beautiful cumuli and cumulo-strati. 5. 20%, Three-tenths of cumuli to E,: four-tenths of fine cirri in zenith and to W.: a few cirri to SW., apparently moving from W., the other clouds moving from N, 23". Rather loose-edged cumuli. 2. As before: a kind of snowy cirri above: sky in patches. 5°. As before: patches of cirrous haze: very thick in zenith and to S.: sky principally on E. horizon, some to N. 23. 20". Linear cirri to N.and E. 23". Cumuli and linear cirri on horizon : small patches of loose cumuli moving from SSW. across the zenith. AUGUST. 1 2—1 65. 2». Cumuli principally to E. and S., but moving across the zenith from SW. 5®. Cumuli nearly as before. 124 d h dh 1 20—2 5 2 20—3 5 3 20—4 5 4 20—5 5 5 20—6 5 7 20—8 5 8 20—9 5 9 20—10 5 10 20—11 5. 11 20—12 5. 12 20—13 5. 14 20—16 5. 15 20—16 5. 16 20—17 5. REMARKS ON THE WEATHER. 1842. AUGUST. 204, Sky covered with cirri: a few cumuli to N. 23, Haze and cumuli. 2". Sky hazy: clouds misty: cumuli, 5%. Cirri: sky very hazy, especially on horizon: a few specks of cumuli to SE. and NE. 204, Largest kind of cirro-cumuli. 23", Cumuli and cirro-cumuli: hazy to E. 2%. Heayy black and white cumuli: scud below: a few drops of rain ; very hazy to E.: a few cirri: electric and rainy-looking. 5", Cumuli and scud: haze on horizon: patches of hazy sky. 20h—23", Scud moving rapidly. 2". Cumuli and scud: sky in zenith, 5, Cumuli and scud : cirri above. 20%, Scud. 23. Scud: occasional patches of sky and gleams of sunshine: very light drizzle. 2", Scud: slight drizzle. 55. Asat 2"; the upper covering of clouds is a dim homogeneous gray : occasional patches of sky. 20. Fine linear cirri radiating from SSW. and NNE.: mottled cirri to E. 23". Reticulated cirrus, which becomes cirrous haze to E.: loose cumuli and cumulo-strati below. 2. Detached cumuli round horizon : cirrous haze above. 5". Detached masses of cumuli: cirri and cirrous haze above; the cirri waved in all directions. 204, Hazy: scud: clouds like cedar branches: very thick to E. 23. Loose cumuli or seud. Qh__5h. Heavy cumuli: very hazy to E. 20%, Scud: cumuli on E. horizon: hazy to E. 23". Loose cumuli moving quickly: woolly cirro-cumuli: linear cirri and cirrous haze. 2. As before; showers. 55. Linear and woolly cirri and cirrous haze over 64 tenths: scattered cumuli. 20". Hazy cirrous clouds : linear cirri : cirro-cumuli-strati and woolly cirro-cumuli, 235. Clouds scattered : as before, but a few small patches more nearly approaching to small cumuli, 2", Very hazy and electric-looking: haze and cumuli; the cumuli not much rounded and rather flat. 5", Nimbi: thunder, first heard about 2 30™ to the SSW., whence black cumuli arose ; it gra- dually came nearer, moving along W. horizon: rain began to fall at 3" 0™, which has continued since ; the storm has now worked round to NE. or E.; the flashes of lightning are not frequently seen ; the storm appeared about 7" to have ceased ; it was, however, only a lull for an hour, when it again commenced more violently than ever, the lightning being often vivid ; the distance of the thunder-clouds being from 1 of a mile to 5 miles. The magnets have been nearly stationary since the storm began; this fixedness of their positions during thunder-storms has been observed three times now. 205. Scud. 23", Hazy clouds and loose cumuli, principally on horizon. 2. Loose cumuli moving quickly : linear cirri and loose cirro-cumuli above stationary. 5°. Cumuli moving quickly : a few patches of matted cirri above, apparently stationary. Scud. 20. Clouds moving quickly: to the E. there is a large bank of bluish-gray clouds stationary. 2%. Sky on NE. horizon. 20%, Misty scud, very low and moving very quickly: a great quantity of matted and woolly cirrous clouds above; the scud is so thin that the cirrous clouds can be often seen through it. 23, Nearly as before, but the sky is more in detached patches. 25. Loose cumuli moving quickly : above are fine mottled, vertebrated, etched, reticulated, and hazy cirri. 5. Loose cumuli, as before, but more hazy : cirrous clouds and cumuli stationary : great banks of dense cirro-strati. 20", Thin scud: pectinated cirri above ; the fibres of the cirri pointing NNW. and E.; the cirri appear to have a sort of leeway to E. or SE.: afew cirro-cumuli. 23", Hazy and flame cirri, some — pointing NW., and some pointing SW.: hazy cirri to NW., from which spring the greater portion of the flame cirri: a few cumuli on horizon, and scud rising from SW. 2%, Cumuli: cirri above, lying in two directions; the flame cirri rising from WNW., and linear cirri pointing NNE. and ~ NW.,; the cirri are gathered together in some places into little foamy patches: very electric-look- ing to S.: frequently the quantity of clouds is only seven-tenths. 5°. Cumuli and cirro-strati to W : thick cirrous haze and patches of scud to 8. and SE.: cirri of various kinds to the E.: cirro- — strati and piles of white cumuli beyond: haze and cirri lying in different directions: cirri lying chiefly from NE. to SW. and SE, to NW.: scud. 20%. Loose cumuli: a kind of cirro-cumuli above stationary, 23%. Loose cumuli: sky on NE. horizon. 2", Loose cumuli, much detached and moving very slowly: sky all in little patches. 5", Scud: patches of sky on NE. horizon. 20823", Homogeneous: a tendency to break at 23%, 2. A few patches of scud moving rather quickly : linear cirri above. 5", Cumuli: large cirro-cumuli and linear cirri. d ny 30 31 h d 20—18 20—19 20—20 20—22 20—23 20—24 20—25 20—26 10—27 20—29 20—30 20—31 20—31 REMARKS ON THE WEATHER. 1842. 125 AUGUST. 5. 205, Cirrous haze: cumulo-strati and cirro-strati: loose cirro-cumuli. 235. Vertebrated cirro- eumuli, &c., pointing from 8. to N. 2. Haze: cirri and cumuli: thermometer in the sun 106°.8. 55, Common and craggy cumuli: linear cirri pointing from W. to E.: cirrous haze: a few patches of scud. 5. 20", Loose cumuli: hazy above: thunder to E. before and after this time, and was also heard during the night. 23". Cirrous haze and linear cirri. 2". Haze: cumuli and rather large cirro- eumuli, 5", Haze: nearly homogeneous. 5. 20". Loose cumuli: cumuli on horizon: linear cirri. 235. Scud: a perceptible drizzle. 2h, Haze: scud: dull grayish-blue appearance: stormy-like. 5%. Haze and nimbi rising from SSW. like a fine sheet: clouds like cedar branches: slight drizzle. 5. 20%. A kind of mottled gray mass, part of it like loose cirro-cumuli: sky on NW. horizon. 23". Cirro-cumuli, but not well-defined : in some places to N. the cirro-cumuli are like the rippled sand on the sea-shore, but are brownish on the ridges, and white in the hollows. 25. A very hete- rogeneous mixture, small patches of the sky here and there. 5. Nearly as before, but denser. 5. 20%—23, A few loose detached cumuli: linear cirri. 2. Woolly cirro-cumuli of all sizes : eumuli: sky hazy near horizon; dense to 8S. and SE. 65, Cirro-cumuli lying in strata from SSW. to NNE., gathered in many places into dense nuclei; to the E. are long strata of clouds, probably cirro-strati, with rough edges, lying from SE. to NNE. : a few patches of black scud sail- ing low from about SSW., and lying in lines in that direction like the cirro-cumuli. 5. 20". Scud: light drizzle. 23°. Like buttermilk agitated, all as if stationary ; like cedar branches to N, 2%. Nearly as before: occasionally light showers. 5°. More broken than before: a few patches of sky : detached cumuli lying very low. 5. 20". A few linear cirri. 238". Loose cumuli: cumuli higher, moving much slower. 2". Cumuli. 5®, Loose cumuli: linear cirri. 20%. Scud: various kinds of cirro-cumuli above: linear cirri here and there. 23%. Loose cumuli: cirro-cumuli. 2". A few patches of scud moving from NE.: cumuli, &c. above, moving very slowly from about SSW. 5", Loose cumuli: cirro-cumuli. 10. 10%—205, Scud. 21". Scud: a few patches of sky: cirro-cumuli seen above. 225. Scud: sky in patches, 2". Cumulous scud: cirro-cumuli above. 6", Loose cumuli and patches of scud, all nearly stationary. 7". As at 6": a few patches of etched scud lying low. 8". Loose cumuli : 9", Cirro-cumuli. 5. 20%. Scud: light mist or drizzle: the vane pointing N. but no wind. 235. Loose cumuli moving rather quickly: sky in detached patches. 2". Cumuli. 5". Detached cumuli round horizon. 5. 20". Scud, like cedar branches to E. and N.: clouds above stationary. 22 10™. The clouds are principally cirro-cumuli, lying in lines from S by W., with scud below moving from NE. 235 40™, Haze clearing off, and a long line of ill-defined cirro-cumuli lying N. and S., and moving from S by W.: detached cumuli moving more slowly than before: haze in all parts of the sky, excepting the zenith: some clouds are moving from NNW. 02. Principally cirrous haze, about 1} tenths of cumuli: streaks of pure blue sky to K.: stormy-looking. 2". Haze, 2} tenths of cumuli: the sun projects a visible shadow. 5%. Diffuse cirro-cumuli and haze: watery-looking cumuli on horizon : sky appearing to W. 5. 20°. Clear. 23". Detached cumuli, rather loose on the edges: linear cirriabove. 2". Cumuli: linear cirri above, pointing first from WNW., then from W by S., moving from NW.: immense piles of white cumuli moving very slowly. 5". Sky principally covered with cirrous haze and linear cirri: cumuli moving very slowly : loose cumuli rising from SW., where it is very black : well-defined cumuli on NE. horizon. 23. Scud. 20%. Other clouds above stationary. 23", Occasional showers. ou SEPTEMBER. 2—1 8. 2», Scud: loose cumuli above moving slowly: linear cirri highest pointing from W by N. 55, Scud: cirrous haze, &c. above, stationary or moving very slowly. 8". The sky presents a very strange appearance: large dense masses of scud like smoke are creeping along N. and S. horizon from westward ; thin fleecy masses of the same move quickly across the zenith from W.: near the NW., where the sun is setting, above the scud are masses of cirro-strati, tinged with white edges, MAG. AND MET, OBS. VOL. I. 21 126 iit 12 13 14 15 h dh 20—2 5 20—3 9 20—5 5. 20—6 5. 20—7 5. 20—8 5. 20—9 5. 20—10 5. 20—12 5, 20—13 5. 20—14 5. 20—15 5. 20—16 5. REMARKS ON THE WEATHER. 1842. SEPTEMBER. and seen in the dark grayish-blue beyond, with a patch or two of the brightest blue sky ; the sky is just seen through the scud in the zenith and to E, ; it is difficult to tell whether there is a bluish- gray cloud or only the sky seen through the scud: raining: about this time the ends of a double rainbow were seen. Scud. 5%. Small patches of greenish sky to SSE.: some low patches of scud from SW. : drops of rain. 20%, Thin scud sailing very quickly ; denser near horizon: ragged cirro-cumuli above moving very slowly ; sky in zenith. 23"—5". Scud: light rain at 55, 8" 40™. Three different currents of air observed at present; the highest carries loose patches of scud from W by S.; the next lower, larger and darker masses from NW by W.; and the lowest, thin vapoury patches of scud from NNE.; the direction of the wind at the surface is NNE } E. (SW. at 5".); the greatest mass of clouds is from NW by W.; the upper current is very slow ; in a few minutes the lowest current nearly ceased, it was previously the swiftest : quantity of clouds 9-0. 20. Linear cirri and cirrous haze: thin cirrous nests. 235. Scud, &e. : cirrous haze seen near horizon: clouds moving very slowly. 2. Thick scud. 5". Scud: other clouds above stationary, or nearly so. 204. Scud: cirro-cumuli. 23". Loose cumuli and scud; the cumuli moving slowest. 2. Cumuli and scud. 5°, Large mixed cirro-cumuli and cumuli: sky on NE. and NW. horizon, on the NE. it is light green ; clouds black to SE. 20". Linear cirri radiating across the whole sky in feathered masses from the W. point of the horizon; on the E, horizon the linear cirri lie N. and 8. parallel to the horizon; the feathers of cirri extend from W. to 30° from E. 238", Loose cumuli moving slowly: cirro-strati higher, moving much slower: sky in patches: detached cumuli and cirrous haze on E. horizon. 2%, Loose cumuli: cirrous haze and cirro-strati seen above stationary : sky in detached patches. 5®. Thick cirrous haze, through which the sun scarcely projects a shadow: thick banks of dark clouds here and there: the clouds have a perceptible motion from §. by E.: stormy-looking, 2023), Scud: light rain. 2. Scud ; the sun’s rays penetrating some openings. 5. Loose cumuli and scud: linear cirri and cumuli above. 205, Scud: homogeneous: light drizzle. 235. Scud. 2. Scud: cirro-cumuli: cirro-strati, like sheets of white paper to E.: dense cumuli round horizon. 55, Detached masses of scud or — loose cumuli : pinnacled cumuli and other clouds above moving much slower: cirro-strati on horizon : very black to NW. 20". Thin scud: cirro-cumuli above. 23%. Scud: cumuli, &c. above. 25. Scud and cumuli: cirri like flames, radiating towards NW. and W. 5". Scud and loose cumuli: cirro-cumuli above, moving very slowly. 20", Scud: cirrous haze near §S. horizon; a few minutes before this the sky was overcast ; clearing off rapidly from W. : thick and dull to E. : wind rising : in a few minutes the sky was again quite overcast. 23", Scud: sky on NW. and NE. horizon, where cumuliare rising. 2". Cumuli: cirrous haze on §. horizon. 5%. Cumuli to W.: fine linear cirri, like pencils of the finest hairs, the root being to E., pointing E. and W., and reaching over 75° in length from E. to past the zenith ; they are visible over the whole sky, lying quite parallel to each other, and apparently springing from a kind of reticulated cirrus, which forms a portion of the circumference of a circle, whose centre is in the E. and radius 20°; the roots of the cirri appear to move on this circum- ference, the cirri apparently describing a greater circle : cumuli moving slowly. 205, Very thick; appearing to radiate from N. and S.: cirro-cumuli in the zenith, and thick cirro-strati to E. 235, Nearly homogeneous: some small patches of scud. 2%—5®. Large dif- fuse cirro-cumuli: specks of sky here and there: the sun’s rays through the interstices of the cirro-cumuli project a faint shadow. } 205—23. Scud: nearly homogeneous: patches of sky at 20". 25. A strip of sky on NE. horizon, 5", Patches of sky to SE. and §.: cumuli on ESE. horizon. 20", Thick mist, rendering trees invisible } of a mile distant: large loose cirro-cumuli. 23". Cumuli and large cirro-cumuli; cumuli lower and moving quicker than the cirro-cumuli. 2", Loose-edged cumuli: sky in patches. 55, Very large cirro-cumuli: very black to NNW: sky seen between the cirro-cumuli. 20". Cirro-cumulous scud: different kinds of cirro-cumuli above: linear cirri still higher. 23", Cirrous haze: scud and cumuli: linear cirri to E. with small patches of cirro-cumuli: the REMARKS ON THE WEATHER. 1842. 127 SEPTEMBER. sun’s rays project a pretty distinct shadow. 2%. Nearly as before: haze more above horizon : iain dh large cirro-cumuli; a few patches of sky. 55, Haze: linear cirri: cumuli. 16 20—17 5. 205, Cumulior scud: cumuli and cirro-cumuli to E., lying like islands in the ocean: haze on horizon. 235, Linear cirri generally becoming haze: scud moving rapidly : cumuli on horizon : the sky has a troubled appearance. 25. Scud: light rain. 5". Loose cumuli and cirro-cumuli from § by W. : cumulous scud, sailing low from W by S., and three times quicker than the clouds above ; it is rather curious that the highest clouds move in the same direction as the wind on the surface, while the lower clouds are from W by S.; these motions are most evident, as the clouds are considerably detached. 118 20—19 5. 205—23". Scud. 2, Loose cumuli; the current from NNW. just disappeared, the upper | current from WSW. 55. Cumuli and loose cirro-cumuli from SSE. 119 20—20 5. 204, Linear cirri to NE. : cirro-cumuli to W.: cumuli and scud to 8. 23". Cumuli on horizon : cirrous haze on E. horizon. 2". Loose-edged cumuli: cirrous haze to E.: wind rising. 5. De- tached cumuli moving slowly: linear cirrito NE. . 20 19—20 23. 19. A homogeneous mass of clouds: light mist. 20°, Asat 19": heavy mist: rain at 208 30™. 21", Clouds homogeneous: smart shower. 22". Scud; some patches moving very slowly from about N., some seen to 8S. moving nearly from W.: light rain. 23". Rain clouds: scud rising from about E. and N.: sky on EK, and S. horizon: black to N.: smart shower: the sun shining through thin cirrous clouds: the rain clouds are not observed to move: the scud only appears to move from between N. and E. |21 O—21 23. 0». Low detached patches of scud rather quickly from NNW. : large cirro-cumuli to N., very slowly from about W.: cirrous clouds highest, and apparently stationary: cumuli on E, and N. horizon : the scud has two motions, the upper current from N., the lower from WNW., so that it has the appearance of foam on a whirlpool ; in a few minutes some patches are moving from NNE. ; these are the principal motions, but some patches are seen moving from SSE., and at 0° 15™ some remain stationary. 1". Cumuli and scud, the latter from NNE., S.W., and WNW., the same eddying of the currents as at 0"; they sometimes stop about the zenith and change their course ; the lowest and most powerful current is from NNE. 2%. Loose and other cumuli from about NE. : cumulo-strati on horizon. 3". Scud from S. and from N., but changing the direction every few minutes : cumuli round horizon ; the principal motion is from S. ; sometimes the upper clouds are from S., sometimes the lower; they are sometimes from E.: linear cirri to SW.: flame cirri highest, radiating and moving from S.toN. 4%. Scud from N by E. and from NE. : cirro-cumuli above, very slowly from 8. 5". Loose cirro-cumuli from NW., better defined and stationary above ; some moving from SSE. slowly : cumuli round horizon, which to N. are gray and watery-looking. 6". Scud and large loose cirro-cumuli ; the motions are so small, that it is impossible to determine them: cumuli round horizon. 6° 30™. Thin scud from NW.: thunder heard to S. 7". Cirro- cumuli in zenith: scud on horizon, motion very small, apparently from NE. 8". Principally cirro- eumuli. 9", Cirro-cumuli to E.: heavy cumuli to W.: clear on S. horizon. 10%, Cirro-cumuli in zenith : cumuli on horizon: black to SW. 112—16*. Scud and loose cirro-cumuli: cumuli on NE. horizon at 15". 175. Large cirro-cumuli and cumuli. 18", Scud: cirrous haze above. 19—20". Scud from NE. lowest, the highest from SSE. : several patches of sky seen, but covered with thin cirrous haze. 21". Principally cirrous haze: the sky has a film of linear cirri over it : a few patches of scud quickly from N. and very low. 22". Scud. 23", Heavy clouds on horizon ; clouds breaking up. 122 O—22 10. 0*. Heavy clouds on horizon : clouds breaking. 1%—2. Principally cirrous haze: scud from N.: the sun’s rays project a faint shadow. 3545, Cirrous haze: scud and cumuli : a few drops of rain at 4", 5%,—6" Rain. 7°. Scud: light showers. 8". Ceased raining. 95. Smart shower. 10". Heavy rain. |22 20—23 5. 205. Scud: occasionally drops of rain: patches of sky. 23. Loose cumuli and scud, the scud lowest and quickest. 2. Scud: cumuli: cirrous-like clouds highest. 5%. As at 23%, (23 20—24 5. Scud. 20". Moderately heavy rain. 23". Heavy rain. 2". Breaking : wind just risen : occa- sional peeps of sky. 5". Large cirro-cumuli seen above the scud. (26 20—26 5. 20". Thin scud, which scarcely obscures the sky and the higher clouds: light rain. 23%—2P, Scud: dense fine rain (Scotch mist). 5". Scud: like buttermilk to N.: gray cumuli on N. horizon, moving along towards W. } (26 20—27 5. 20%. Seud and loose cumuli moving very slowly: sky to NW.: nimbi to E. 23°. Loose ! 128 29 30 10 11 SEN od) | (Sa) REMARKS ON THE WEATHER. 1842. SEPTEMBER. cumuli from NE by N.: another current from ENE., which appears to be edging round by S, 2, Loose cumuli from N by E., apparently another current from about E.: cumuli on E. horizon ; sky there and in zenith. 5". Scud: loose cumuli. 205. Scud: clouds breaking. 23%. Scud: light rain. 2. Scud: sky in zenith and to N. 5%, Scud: cirro-cumuli. 205, Loose cumuli. 23". Scud: sky to W. with cumuli: rain to E.: a smart shower in a few minutes. 2. Loose cumuli. 5%. Well-defined and loose cumuli: scud very low: part of a rain- bow to NE. 20". Cirro-cumuli moving slowly from ENE., lying in a stratum from NNE. 235, Cumuli, detached and in ranges on horizon. 2". Loose cumuli moving slowly. 5". Loose and well-defined cumuli: cumulo-strati on horizon. 20, A dense mass round horizon, like cirro-cumuli stratified on the edges: a long line of loose cirro-cumuli moving across the zenith; above this are patches of flame cirri. 23". Cumuli and large cirro-cumuli: sky to W., and through the interstices of the cirro-cumuli, which become quite thick to E. OCTOBER. 2h, Scud, and two currents of loose cumuli. 5. Large cirro-cumuli. 20. Thin scud: other clouds higher: sky to N. 28". Scud and loose cumuli: patches of sky to S. 2. Scud and a kind of cirrous haze: ragged cumuli: patches of sky to N. and §, : the sun projects a strong shadow through the haze. 5", Cumulo-strati and scud: linear cirri above all to S. 20%. A strip of cirro-stratus on NE. horizon ; the ground covered with hoar-frost for two hours after this. 23°. Detached cumuli to N., moving very slowly. 2". Detached bits of loose cumuli and a few linear cirri to S. 55, A few patches of cirro-stratus to S.: hazy on E. horizon. 20. Scud: large cirro-cumuli, &c. above. 23". Large cirro-cumuli and cumuli. 25. Hazy scud, 5", Scud and loose cumuli: patches of sky round horizon: in some places to E. the sky is quite green: rain to NE. and E. 205. A thin film of fine linear cirri over the whole sky: thick cirro-strati to SE. and E. 235, Nests of cirrus, flamed here and there, cover almost the whole sky, and move slowly from N. : detached cumuli below from NW. 2%. Cirrous-edged cumuli: scud: a thin film of linear cirri over the sky: wind in gusts. 5°, Scud: cirro-cumuli: cirrous haze. 20". Fine cirri, becoming haze ; in some places like great brushes, the hairs lying from WNW. : scud below. 23", Thin detached patches of scud: sky covered with a thin film of linear cirri; the cirri in some places gathered into nests like loose cirro-cumuli, becoming haze near the horizon. 2h, As at 23; the scud in large masses. 5". Nearly as at 23"; the cirrous nests lying in lines from WNW., and apparently moving from about NNW. ; in some places like foam. 20". Scud. 235, Large loose cirro-cumuli: quite thick towards the E.: sky at the interstices of the cirro-cumuli and to NW.: the clouds seem very high, and the vault has a more expansive appearance than usual: the clouds breaking up. 2%. Detached patches of cumuli: fine linear and curled cirri pointing WNW. ; the linear cirrus becomes haze near the horizon; in some places it is mottled, reticulated, and flamed; the cumuli becomes cumulo-strati on horizon. 5". Linear, — mottled, and curled cirri, gathered into nests in some places, and becoming haze near the horizon. — 20". Scud: different kinds of cirrous clouds above. 23". Scud and loose cumuli; the portion that is considered sky is nearly covered with a fine film of linear and slightly pectinated cirri, — pointing N. and 8.; in some places it becomes haze. 2". Zigzag linear and mottled cirri: cir- rous haze: a few patches of scud. 5%. Nearly as at 28; the cirri becoming slightly hazy. 20". Scud, 235, Linear cirri to N. and S., becoming haze to N., and lying E. and W.: a few patches of loose cumuli to N. 2". A thin film of cirrous haze to N.: linear cirri to S.: cumuli to E. 5". 13 tenths of loose cumuli; the rest a kind of woolly cirro-cumuli: cirro-strati on horizon. 20, Linear cirri, all to E.; some of the cirri like waves: it has been frost during the night, and there is still a little hoar-frost. 23". Cumuli to N.: different kinds of cirri over the sky. 2, Cirri of different kinds, principally linear and waved, like one side of a feather, the middle pointing WNW., and the fibres pointing SSW. 5°. Chiefly woolly cirri, like large feathers, with the curl upwards: cirro-strati on N. horizon. REMARKS ON THE WEATHER. 1842. 129 OCTOBER. 12 20—13 5. 20". Linear cirri to NE.: a thick bank to E.: mist rising from the ground: the ground covered with hoar-frost. 23". Various kinds of cirrus, 2. Very fine linear cirri and other varieties. 55, Cirri of almost every kind, but chiefly linear ; very thick to N. 13 20—14 5. 20". Scud, dropping the slightest possible rain: sky on NE. horizon. 235, Scud or loose cumuli: linear cirri above. 25. Loose-edged cumuli and cumulo-strati: woolly and linear cirri above. 55. Cirro-cumulous scud, becoming cirro-strati to E.: cirrous haze and linear cirri cover about three-tenths of the sky : large loose-edged cumuli rising in W. 14 20—15 5. 20". Cirro-cumulous scud assuming the form of cirro-strati to S. and E. 235. Detached patches of loose cumuli, the greater part on S. horizon. 2". Two currents of loose-edged cumuli and cumulo- strati. 5". Loose cumuli to S., like large cirro-cumuli, which near the zenith become small. 16 20—17 5. 205—23, Nearly homogeneous. 2, A little more broken: scud: cumuli to N. 5%. A loose sort of cirro-cumuli highest, and in N. half of the sky: in the S. is a great mass of scud: rain to SE. (17 20—18 5. 20%. From NNE. round by S. to SSW. is a mass of thick woolly feathery cirrus, radiating from SSE., reaching to NE., where there are cirro-strati; the feathers appear to move round their centres ; on the horizon are watery-looking cumuli, then the thick cirrus, which becomes gradually thinner to near the zenith. 235. Detached loose cumuli: cirrous haze to SE. and NNW.; the linear cirri still radiating from SSE. 2". Loose detached cumuli: cirrous haze on SSE. and N. horizon : wind varying. 5, Rain for half-an-hour: very dark, especially to W.: a sort of hazy cloud: wind in gusts, sometimes to 3 or 4. 18 20—19 5. 20%. Clouds clearing off rapidly ; a few minutes ago the quantity was eighth-tenths: thin scud : a kind of cirro-cumuli higher: cumuli to N. 238—2". Loose detached cumuli. 5". Loose cumuli round horizon. 19 10—20 10. 105. Linear and woolly cirri: cumuli on horizon. 11"—12. Cumulion horizon. 135—14?. Clear. 15"—16. Lunar corona having the-colours of the spectrum ; outer radius about 5°: a few cumuli on NE. horizon. 17%. As before, but no clouds. 18. A few clouds on E. horizon: slight corona: very clear. 195. Clear. 20%—21". Heavy cumuli on KE. horizon. 22". Beautiful cumuli on E. horizon : cirro-cumuli in zenith. 23". Loose cumuli and cirro-cumuli: beautifully pinnacled cumuli on E. horizon, which have been stationary since the earliest twilight. 0". Cumuli scattered in small portions all round the horizon. 1°. Cumuli and cumulo-strati round horizon. | 26h, Cumuli and cumulo-strati, principally on horizon. 7"—10". Cumuli on E. horizon. 20 20—21 5. 20—235. Cumulo-stratus on E. horizon, as there was all the previous day: linear cirri. 2”. | Cumuli on horizon: loose cumuli. 55. Loose cumuli or scud; woolly cirri above: cumuli on E. horizon. 21 20—22 5. 20". Rather heavy rain. 23. Loose cirro-cumuli and a few patches of scud. 2. Woolly cirri, becoming a kind of cirro-cumuli ; linear cirri and cirrous haze in some places: loose cumuli. 5%. Scud, very low and moving quickly: hazy clouds: sky stormy-like: a cloud like black cirrus is spread over much of the sky, it moves very little. 23 20—24 5. 20". Scud: haze above? 23. Loose cumuli and a sort of cirrous cloud becoming cirro-cumuli on the edges, all to E. 2". Loose cumuli lying round the horizon. 5. Cumuli on horizon, a few linear cirri to W. | 24 20—25 5. 20%. Cumuli on N. and E. horizon: linear cirri to S. 23. Strange appearance, as if the clouds reached the ground, like a ragged curtain spotted unequally with black: patch of green sky to E.: snow to S.? 2. Nearly as at 235, but the tint more uniformly gray: snow on Cheviot: snowing at 3%. 5". As before, but patches of detached scud seen in the grayish haze: a few drops of rain: snowing at 4%. 25 20—26 5. 20". A sort of loose cumuli arranged like cirro-cumuli: cumuli on horizon: ground covered with a thin coat of snow. 235, Snow. 2". Sleet till within a few minutes : scud: cirrous haze seen above: wind varying. 5. Scud; some of it very low: the sky covered with a thin cloud. | 26 20—27 5. 20%. Loose cirro-cumuli from N.: scud very low from about W., some from N., but all moving very slowly : mixed cirri seen very low, with a dark cloud above the scud: cumulo-strati to S., cirro-cumulous on the edges. 23". Highest clouds woolly cirri, linear in some places: loose scud : sky stormy-like. 2. Cumulous scud to S. and N.: a kind of cirrous cloud above : like rain to E., occasional drops here: a few patches of sky. 5%. Scud: cirrous clouds above: light rain: wind varying from SSW, to NNW. ; 27 20—28 5. 20". Scud, like small cumuli: a kind of cirrous cloud below a great mass of scud: watery cumuli MAG. AND MET. OBS. VOL I. 2x 130 30 20—31 5. 31 20—31 23. 1 2—1 5. 1 20—2 5. 2 20—3 5. 3 20—4 5. 4 20—5 5. 6 20—7 5. 7 20—8 5. REMARKS ON THE WEATHER. 1842. OCTOBER. to NE., very gray ; like a volcano burning in one place: linear cirri to S.: sky rather indescrib- able: most of the scud cirrous, 23". Vertebrated cirri lying N. and S.: cumuli to NW. and SE.: masses of cirrous scud and loose cumuli to W. 2%. Loose cumuli: fine woven or reticulated cirri, the thickest lines lying N. and S.: cirrous haze to E.: woolly cirri in zenith becoming cirro-cumuli in some places: wind varying. 5®. Cirro-cumulous scud : a kind of woolly cirri seen above. 20, Loose cirro-cumuli on horizon from N., round by E.to S. 23". Cirro-strati to E, : linear cirri to W.., like circles crossing in long arches from NNE. to WSW. 2". The sky to W. covered with cirri so close as almost to become haze; the structure is well seen to E., where there are fine hollow lines concave to N., with a foamy kind of line at right angles moving from NNW. ; these lines are less distinct and lower than the first, being like bundles of woolly cirri: a few patches of cumuli to E., and cumulo-strati on E. horizon. 5%. Loose cirro-cumuli, like scud, covering six-tenths of the sky : linear cirri and cirrous haze above: cirro-strati to S. 20", Large loose cirro-cumuli, which become a sort of sandy-like cirrous cloud round horizon. 23", Cirro-cumuli and cirrous haze above : loose cumuli and scud below: the cirro-cumuli largest in zenith: patches of small cirro-cumuli in the haze to 8. 2%. Hazy: cirrous clouds highest, rippled, like sand on the sea-shore : cirro-stratous scud ; some of the cirrous clouds are cirro-cumu- lous ; a general grayish-blue appearance. 5. Hazy cirri: scud below: the clouds have all sorts of colours, grayish-blue, deep blue, orange, red, white, &c.: vertebrated cirri: a range of cumulus, extending about 50° along E. horizon, like a long pillar lying on its side. 205. Smoky scud from WSW, : another current of scud higher from N. by W.: beautiful cirri highest from about W.; the cirrus is mottled, woolly, and linear, some of it like swan-down. 235. Loose irregular cirro-cumuli: cirro-strati to N. and S.: cumuli of different kinds to E. : cirrous haze to N. NOVEMBER. 2, Loose cirro-cumuli: cirrous haze to N.: cirro-strati and loose cumulo-strati to N. and NE. 5", Cirrous cirro-cumuli, coloured gray, fringed with red ; thick to E. and S., where they assume a stratified form. 20%. Thin ragged scud, apparently touching the ground about three miles distant: cirri seen above. 235, Scud; neither so thin nor so low as at 20". 2%. Scud moving very slowly : sky on E. and SE. horizon ; occasionally patches in zenith. 5%, Scud; motion very slow: cirrous clouds are now seen where the sky was at 2", 20", Scud. 235, Cumulo-strati and large loose cirro-cumuli, both dropping a little rain ; the cumulo-strati lowest. 2. Loose cumuli. 5%. Scud round horizon, principally to E., in long strata descending in showers: cirro-cumulous patches crossing the zenith: the sky quite gray. 205. Cirro-cumulous scud, with masses of it and heavy gray cumuli round horizon; to the N. they are like a gray curtain; to the S. some of the cumuli have cirrous crowns, forming nimbi ; and some of the cumuli tops are now tipped with red. 23". Piles of cumulo-strati on horizon ; nimbi to SE. and §., crowned with cirrus: small patches of scud: showers occasionally : the ex- tremity of a rainbow seen within 100 yards. 2. Beautiful cumulo-strati and cirrous-crowned nimbi, principally near horizon : loose cirro-cumuli in zenith: shower of small hail about an hour ago: showers every half-hour: wind varying. 5%. Large masses of loose cumuli and nimbi: shower to E. approaching,—here in five minutes. 20%, A sort of loose cirro-cumuli and scud, falling in rain in many places, and here occasionally: — a few fine cirro-cumuli seen above. 23". Nimbi dropping like pencils: a sort of cirro-cumulous disposition of cloud.: showers around : extremities of rainbows seen occasionally : the quantity of clouds often more or less: light shower of the most minute drops. 2. Scud and nimbi: smart — shower of very fine rain: large cirro-cumuli above: very dark to W. and N. 5°. Scud, cumuli, and nimbi: sky quite hazy to E.: about 10° above the E. point of the horizon is a large patch of flesh-red : showers. 20". Cirro-cumulous scud: rain to S. 23%. Nearly as before ; sky on NW. horizon: sunshine occasionally. 2. Thicker than at 23"; no sunshine. 5°. Loose or ragged cirro-cumuli moving from SSW..; a little ago from SSE.?: sky on S. horizon, where it is white; red to E.: snow on Cheviot. 20%, Cirrous and loose cirro-cumuli: sky very calm: linear cirri: the sky almost covered with dh d 8 20—9 9 20—10 10 20—11 ot 20-12 13 20—14 14 20—15 /15 20—16 16 20—17 117 20—18 118 20—19 | 20 20—21 on REMARKS ON THE WEATHER. 1842. 131 NOVEMBER. a cirrous cloud, which it is difficult to distinguish from sky. 23". Cirrous clouds: fine cirro- eumuli: thick cirrous haze, having cumulous'heads to E.: the sun’s rays project a faint shadow on paper. 25. Cumulo-strati over two-tenths of sky: cumuli: linear and mottled cirri and cirrous haze: cirrous haze on E. horizon ; its formation of linear cirri becoming evident at about 15° alti- tude. 5®. Cumulous scud: cumulo-strati and cirro-strati to E., with a bluish-black cirrous haze : beautiful ranges of cumulo-strati about an hour ago: sky hazy. 20h—2". Light rain : clouds moving rapidly : wind settling at 2": calm at 35. 55. Cumulous scud: sky to 8. hazy: a patch of red to N.: nearly calm, but occasionally gusts. 20", Linear cirri to SE. : a little hoar-frost on the ground, 23. Fine cirro-cumuli and linear cirri ; the linear cirri so fine as almost to be haze, occupying about 23 tenths of sky to S.; the cirro- cumuli lowest and moving slowly : a mass of cirro-cumulito NW. 2". Cirrous haze: scud below. 54, Thick cirrous haze. 20%, Light rain: very thick and dark. 23"—2, Scud: breaking up a little, and a slight shower at 2, 55. Clouds nearly homogeneous: a little foggy. 205, The clouds have rather a broken appearance, moving very slowly : light mist. 23". Clouds broken, and rather cirro-cumulous; motion very slow. 2". Seud, like cedar branches: cirro-cumuli seen above with cirrous haze: wind rising. 5". Seud: cirro-cumuli above. 20%, Loose cirro-cumuli: cumuli on NE. horizon : cirro-strati to N.: slight cirrous haze: sky red to W. 235. Large loose cirro-cumuli: cumulo-strati on E. horizon: snow on the Cheviots. 2h, A fine range of cumulo-strati on E. horizon: a few small cumuli and linear cirri to S. 5%. Linear cirri, becoming haze, radiating from W., and apparently covering the whole sky, as the por- tion considered sky is whitish ; the moon has a corona of the breadth of its own diameter round it : cumuli on E. horizon, where the haze is bluish-black. 20%. Scud and loose cumulo-strati ; cirro-cumuli above: the scud creeps along the S. horizon : most beautiful and small cirro-cumuli seen at 22", lying in strata from E. to W. 23. Cirro-cumuli, but not so fine and distinct as before : loose cumuli moving quickly, much lower than the cirro- cumuli: snowing to E, and N.: some of the fine cirro-cumuli like foam zigzagged. 2". Cumulo- strati and scud: woolly cirri above, reaching from SE. to WNW., and moving very slowly : cumulo- stration N. and E. horizon ; much of the cirri flamed and linear, some of it mottled: snow twice or thrice since last observation ; very mealy, and not coherent. 5. Mottled and loose cirrous clouds : scud : below the cirrous clouds are others like scud swept with a broom, radiating from WSW. in large pencils; it looks very strange; these clouds seem as if blown from the WSW., and seem to spread or move from it. 20. Scud, &c., moving very slowly. 23". Scud: cirrous haze or fine linear cirri over two- tenths of the sky: snow on Cheviots, and clouds resting on their tops. 2". Almost as before: a few more patches of pure sky: the wind rose at 23" 30™: blowing from ENE. 5%. As before ; wind in gusts. 20. A bloated mass: snow on Cheviots. 23", As before: the clouds opening a little, having a sort of cirro-cumulous disposition : small patches of sky : motion of clouds very slow. 2%. Loose cirro-cumulous cumuli: cirri. 5". As at 23. 20". Cirro-cumuli, which lie in ranges from NNW. to SSE., moving from about WNW. : cirro- strati to E.: the sky almost covered with cirrous haze. 235. Scud, covering nearly the S. half of the sky ; above it fine linear cirri, covering nearly the whole sky, radiating from NW. ; some patches of cirro-cumuli still remain, the cirri becoming haze in many places: wind rising. 2". Nearly as before; three-tenths of scud, the rest cirrous haze, and a sort of mottled cirri, 55. Nearly all scud, although the sky is covered with a slight cirrous haze ; Jupiter is seen through an opening in the clouds at an altitude of about 10°. 20. Thick mist : light sprinkling of snow on the ground: mist falling like the finest light rain. 23", A kind of haze or hazy cloud: not the slightest breath of wind. 2. Loose cumuli and cumulo-strati: some mottled cirri above: cumuli on horizon: the air remarkably humid: every thing covered with moisture : the atmosphere not very transparent. 5°. Heavy black cumuli and scud : some cumuli very low: a few patches of sky: the sky has a strange appearance. 20%. Scud: pinnacled cumuli on NE, horizon : a few minutes ago the sky was quite overcast. 23", Loose and well-defined cumuli: fine linear cirri becoming haze: rain or snow to SE. 2. Cirrous haze or linear cirri, covering the greater’ part of the sky, lying in strata to S. from ENE. to WSW: fine pinnacled cumulo-strati on horizon from N. to SE.: snow on Cheviots, 5". As 132 diel Glin 21 20—22 5. 22 20—23 5. 23 20—24 5. 24 20—25 5. REMARKS ON THE WEATHER. 1842. NOVEMBER. before: a little more scud, and the haze so thick or white as to render it difficult to distinguish it from milky sky. 20", The ground covered by a slight fall of snow: still falling lightly. 23"—2. Scud low: cirrous haze above: still a few flakes of snow: a break in the clouds to S. 5®. Clouds a homoge- neous mass: no scud visible: still a few flakes of snow, which are now increasing. 204, Scud: cirrous clouds above: sky to S. 23". Cirro-strati on E. and S. horizon: frizzled cirri above to N. and E.: clouds resting on Cheviots; the hills look distant. Qn. Cirrous-edged cumulo-strati, reaching from W. to SE., and moving along S. horizon : cirrous clouds above: clouds and snow on Cheviots. 5». Scud: cirro-strati to NE. 20h—2". Scud: cirrous haze: light rain. 5%. Scud. Scud. 20. Clouds opening: cirrous clouds above. 235. Cirro-strati and cumulo-strati on S. and E. horizon: sky to S.and E. 2". Haze: sky to N. 10—26 10. 10"—19". Scud: slight shower at 14%. 20%. Scud: hazy above: fiery red to E.: patches of 20—28 5. 20—29 5. 20 5 20—5 5 20—6 5. 20—7 5. 20—8 5. 20—9 5. 20—10 5. 20—12 5. 20—13 5. 20—14 5. 20—16 5. 20—16 5. sky: rain lately. 21>. Scud: cirrous clouds above: cumuli on E. horizon: hazy patches of sky : red to E, 22-34, Scud, and haze above. 4. Cirro-cumulous scud moving very slowly: sky — to S. 5%—6, Scud: dense: most open to SE. 7%—8. ‘Scud: rain at 8". 9%—10», Very dark : at 10" clouds lying in strata from S. 204, Scud: light rain. 23. Scud: cirrous clouds above: patches of sky to E.: light rain. 2h, As before; no sky. 5". Scud: light rain. 20%, Scud and loose cumulo-strati. 23". As before; sky principally to E. 2". Heavy cumuli and scud; cirrous clouds above : rain falling around. 5". Scud moving quickly: sky hazy. Cumulo-strati, scud, and nimbi. DECEMBER. Scud. 20". Scud: clouds breaking. 23, Beautifully mottled cirri, radiating from SW. and NE. ; in some places like the finest cirro-cumuli, but chietiy like woolly net-work : scud below. 2°. Seud: patch of sky on NE. horizon. 5". Scud: slightly cirro-cumulous: patches of sky. 205, Foggy: rain lately: the vane points from NE. 235%—2, Thick mist since 20"; cleared off now: nota breath of wind. 5". Flocculent cirro-cumuli and scud ; motion scarcely perceptible : mists rising from the ground. 20%. Homogeneous. 23%. Scud: clouds breaking: small patches of sky. 2. Scud and loose cumulo-strati: linear cirri and cirrous haze above. 5%, Cirro-stratus scud: cirro-cumulous clouds above: clouds red to SW. 20%, Loose cumulo-strati or scud: cirrous clouds over the sky: red to E. 23%—5, Cirro- cumulous scud. 20". Homogeneous: gray. 23". Scotch mist. 2. Mist still: seud : clouds breaking : a patch of sky: fine cirri seen above, 5". Asat 2; no sky. 205. Thick mist. 23". Thick mist: scud: patches of sky: cirrous clouds seen above: in a few minutes the quantity of clouds 8. 2". Mist and light rain. 5°, Cirro-cumulous scud: an — hour ago the quantity of clouds was 8. 20", Dark: light rain: sky to SSE. 23". Scud, with lightest rain: patches of hazy sky to SSE., with very gray clouds. 2'—5». Scud: light rain. Scud. 20". Light rain, 2. Rain heavier. 55. Light rain. 205, Scud: patches of sky covered with cirrous clouds to SE. 23". A sort of cirrous seud, rather cirro-cumulous in its disposition. 2. Sky covered with masses of cirrous clouds, some of — them very low; large white mass to N., moving very slowly : the sky greenish-blue to SE, 65% Thick cirrous clouds, lighter here and there. ; 20>, A few drops of rain: a patch of bright red to SE. 235. Scud: light rain. 2". Scud. 5, A great reservoir of curled scud, boiling up in the SW., and moving quickly across the sky: a — few cirrous clouds higher, moving very slowly: sky hazy. 20, Cirrous clouds : it is difficult to tell what is sky and what is not, on account of the cirrous” haze: cumulo-strati and cirro-strati on horizon. 23. Scud: misty drizzle. 2. Scud: cirrous clouds above: cumuli to E. 5. Scud: a few patches of sky to E. and S.: occasionally drops of . rain as there have been all day. aon dh 16 20—17 5. 18 20—19 5. 19 20—20 56. 122 0—22 10. REMARKS ON THE WEATHER. 1842. L338 DECEMBER. 205. A great mass of scud covered eighth-tenths of the sky at 19" 50™, when there was a pretty heavy shower ; it moved off so rapidly that there was only one-tenth of clouds at 20> 0™ ; a complete and distinct lunar rainbow seen at 19> 50™: cumuli and nimbi to §. and SE. 23. Scud or loose cumulo-strati. 25. Cirrous scud, chiefly to W. 5. Loose cumuli. 20". Cirrous clouds and haze. 23". Scud: fine mottled, pure, and linear cirri above, point- ing N. 2. Loose cumuli: fine cumuli on the Cheviots, but the sky covered chiefly with fine cirri, radiating fron NNW. and from S. by W., principally mottled, but very thick to W. and NW. : linear to E.: hazy to W.: sky to E. 55, Sky covered with cirrous clouds. 205, four-tenths of scud, the rest linear cirri, which covers almost all the sky : corona round the moon, radius three diameters. 23°. Scud: varieties of cirri above. 2. Cirrous scud: linear and pure cirri of the finest kind, like silken hairs, pointing from WSW. to ENE. 5%, Thick scud : cirrous clouds above. 20 20—20 23. 20*. Fine cirri and cirrous cirro-cumuli, moving slowly. 21". Fine cirrous clouds, mottled and in strata: cirro-strati. 22". Fine cirro-cumuli: linear, mottled, and woolly cirri, the latter in little bundles lying in strata: woolly cirro-cumuli; some of the cirri extremely fine ; much of the upper cirri appears to radiate from NW. 235. Cirrous clouds: cirro-cumuli of various sizes: finest linear cirri highest, pointing from WNW. ; the cirrous clouds are very thick in some places, and to the E. become like cirro-strati; the lowest cirro-cumuli are rather large and woolly : about 235 20™ a few cymoid cirri were seen, and a few most beautiful mottled cirri. 21 O—21 23. 0. Large woolly cirro-cumuli moving slowly from WNW. : linear cirri lower, seem as if drifted from WNW.; thick towards horizon, cederaceous to SE. 15. The clouds present altogether a troubled appearance: the cirrous clouds have become quite thick, and like a semifluid: radiating from SE. and NW., lying in dark and light strips: masses of scud or loose cumuli creeping along S. horizon from about W. 2. Cirrous clouds thick and spread unevenly over the sky: scud to S. 35, Some smoky scud very low from WSW.; scud or thick cirrous clouds above it from WNW., the cirrous clouds not so thick as at 2": some patches of sky : observed a patch of loose scud moving up from SW., which seemed to develop itself as if under the influence of two currents ; when about 30° high, it showed the prismatic colours, something like diffraction spectra from irregularly striated bodies ; the clouds have a gray tinge ; other cirrous clouds above all. 4". The sky has a strange appearance: scud very low, very far below the highest cirri, moving in strings like smoke quickly trom SW.: higher scud slower from W. : linear cirri in E., and cirro-cumuli in zenith, &c. ; lowest cirro-cumuli gray, and moving slowly from about W., lying in bands from N. to S.; highest very fine, their motion not detected. 5%. Scud principally: cirrous clouds seen above: sky in zenith. 6". Dark, but masses of scud can still be seen moving up from SW. 7. Quite dark. 8". North part of the sky dark; the south part has dark clouds near horizon, but lightens up to zenith, pro- bably cirrous haze: stars occasionally visible. 9". Dark. 105. Scud, radiating from SE.: appa- rently cirrous clouds above. 11". Clear in zenith: heavy clouds to EK. 12". Clear streak in S. horizon: patches of sky to W. and in zenith. 134, Light clouds in zenith, 14*—15>. Dense clouds to SE. and NW. 16%. Light clouds on N. and E. horizon; the rest of the sky covered with dark lowering scud. 17°. Dark clouds, except on N. horizon. 18—-19". Cirrous clouds on horizon. 20%. Sky covered with heavy clouds, especially on horizon. 21. Scud: heavy clouds on SE. horizon. 22". Scud: cirrous clouds. 234. Scud very low and moving quickly from SW. patches of sky : cirrous clouds seen above. 0». Scud moving rapidly. 1". Scud: cirrous clouds. 2. Scud: loose cumuli on E. horizon. 3", Heavy rain: clear to N. 4. Sky clear, except where cirrous cumuli skirt the horizon on all points but NE. 5®. Scud: light rain. 6%—75. Scud, &c.: dark. 8". Clear in zenith. 9. Scud. 105, Light rain. 20". In a few minutes rain, and the sky became nearly overcast: sky on SE. horizon: cirro- strati seen there. 23. Scud, in strata to SE.: a few linear cirri: rain freezing on the palings, &e. 2», A mass of cumuli to SE., and on NW. horizon. 5°. Loose-edged cumuli, having a cirro- cumulous disposition, moving quickly. 20. Scud and cirrous clouds. 23%—2», Clear: a few cumuli on NE. horizon, and on Cheviot. 5", Thin cirrous clouds, with a cirro-cumulous disposition. 20% Sky covered with a thin watery haze, which makes a sort of oblong halo round the moon : light rain. 28". Cirrous scud: woolly cirri above: portion of a rainbow seen: rain here lately : raining heavily on Cheviot. 2. Homogeneous scud : cirrous clouds above: light rain. 5%. Cirrous clouds: mottled, linear and woolly cirri, and loose cirro-cumuli: sky nearly covered with fine cirri. MAG. AND MET. OBS. VOL. I. 200 134 d h d oh 26 20—27 27 20—28 5. 28 20—29 5. 29 20—30 5. 30 20—31 5. REMARKS ON THE WEATHER. 1842. DECEMBER. 205. Clouds lying in a belt from 8. to NE.: above NE. horizon, cirro-strati. 234. Mixed and linear cirri: cumuli on Cheviot. 2. Scud from W by N., and on Cheviot: a few patches of cirri to E. 5. Scud and loose cumuli. 20". Cirrous clouds. 235. A few patches of cumuli and scud on Cheviot. covered by fine linear cirri: cumuli, &c. on Cheviot. cipally fine linear cirri, which now seem almost haze. 20423), Scud: light rain: raining heavily to E.at 23". 2". To the S. a large mass of loose cumulo-stratus: patches of scud: masses of linear cirri. 5". Scud and cirrous clouds: thick masses of cirrous clouds to E. 205—23h. Scud. 25. Scud: linear cirri, &c. above. 5°. Very thin scud : very black to S. : cirri seen about: wind varying. 205. Scud. 23". Loose cumuli: cumuli on SE. horizon: a few rather large cirro-cumuli: woolly cirrous clouds: portion of a rainbow seen. 2. Long strata of woolly cirri, lying from WNW., moving from W by N., covering the greater part of the sky; a clear space to N.: much linear and reticulated cirri: cirri thickest to S.: cumulion N. horizon. 5. Cirri of different kinds, becoming haze to S.: cumuli on NE. and SW. horizon. 2h. Sky nearly 5". Sky covered with cirrous clouds: prin- ABSTRACTS OF THE RESULTS OF THE MAGNETICAL OBSERVATIONS, MADE AT THE OBSERVATORY OF GENERAL SIR T. M. BRISBANE, Barr., MAKERSTOUN. 1841 anp 1842, 136 ABSTRACTS FOR THE MAGNETIC DECLINATION. TABLE I.—The Monthly Means of the Declinometer Readings in Westerly Declination, for the Hours 20, 23, 2, and 5. Month. 20%, 23h, 2h, 5b, ont en Range. Fea dink| Oba 25> 25° 25°. 2p July 25-95 30-65 35-70 33-03 29.49 9-75 August 33-68 37-32 42.55 38-09 35-88 8-87 September 30-26 34-27 39-01 33-87 32-06 8-75 October 30-42 31-99 34-75 30-02 30-22 4-33 November 31-63 32.94 35-15 32-01 31-82 3-52 1842. January 27-96 28-47 30-77 29-25 28-60 2.81 February 29-46 31-51 35-74 31-23 30-34 6-28 March 27-51 31-13 35-63 "31-92 29-71 8-12 April , 30-66 34-84 39-96 35-82 33-24 9-30 May 25-52 30-53 35-98 33-23 29-37 10-46 June 24-94 29-25 34-92 33-31 29-12 9-98 July 25-13 28-65 34-08 31-98 28-55 8-95 August 24-18 29-73 33-53 28-80 26-49 9-35 September 26-53 31-08 34-25 | 28-85 27-69 7-72 October 25-79 28.42 32-79 28-31 27-05 7-00 November 26-80 28-16 30-38 | 26-80 26-80 3-58 December 24.85 25-86 27-53 25-36 25-10 2-68 The mean of the Declinations at 20" and 5" have been given as an approximate mean for the month. The difference of the Declinations at 20" and 2% is given as the approximate diurnal range. The latter must be very near the truth, as 20" and 2" are nearly the hours of least and greatest Westerly Declination throughout the year. It seems very probable, that the Declination in the months of July and August 1841, and of April 1842, are _ considerably affected by the torsion of the suspension thread. While this would destroy the value of the mean for the month, the diurnal range may be considered as unaffected. In order to shew the regular changes well, it is advisable to eliminate, as far as possible, those days of irre- gularity or disturbance in which the positions of the magnet differ considerably from the mean. The following rule was adopted for the determination of the days of irregularity which should be rejected. If a, 6, and ¢, be the approximate diurnal ranges for three successive months, those days in the middle month — a+2b+e vies For the first and last months, the sum b+c or a+6 has been used. (See Table XXIII.) This rule was formed chiefly for the two components of force, for which it is much better suited than for the Declination. Table II. has been formed after rejecting the days of disturbance thus determined. are rejected in which the diurnal range exceeds ABSTRACTS FOR THE MAGNETIC DECLINATION. 1387 ABLE II.—The Monthly Means of the Declinometer Readings, rejecting disturbances, in Westerly Declination, for the Hours 20, 23, 2, and 5. . Mean of penth. aah j ; ; 20» and 5h, 25° 2a 1841. : A July 26.42 29-60 August 33-68 35-88 September 30-23 : . 32-23 October 29-21 . . 30-11 November 30-55 31-07 1842. January 27-96 28-60 February 29-25 30-86 March 27-53 . 29-52 April 31-06 . . . 33-39 May 25-50 29-03 June 24-94 29-12 July 25-13 ; 28-55 August 24-18 26-49 September 26-68 27-80 October 25-90 . : 27-35 November : 26:58 26:78 December 24-88 25-21 Each month shews markedly an increase of Westerly Declination from 20% till 2", and a decrease from 2" till 5". The means cannot be trusted for indications of an annual period. The diurnal range, however, increases considerably in summer compared with winter, and the ranges of the months in 1841 and 1842 agree very well. /The maximum range occurs in May 1842, but it seems probable that the ranges for April, June, and July, 1842, are less than they should be, owing to disturbances, which have not been eliminated by the previous rule. The two following Tables are formed from Table II. TABLE III.—The Westerly Declination at the Observation Hours for periods of Three Months, for the Summer and Winter Months, and for the Year 1842. Period. 20, 23, 24, 5h, Mean of 205 and 54, 25° 25° 25° 25° 25° 1841. ‘ ‘ ‘ ‘ ‘ July, Aug., Sept. 30-11 33-80 38-68 35-03 39.57 Oct. and Nov. 29-88 31-27 33-86 31-30 30-59 1842. Jan., Feb., March 28-24 30-21 33-70 31-08 29-66 April, May, June 27-17 31-36 36-81 33-87 30-52 July, Aug., Sept. 25-33 29-79 33:89 29-90 27:61 Oct., Nov., Dec. 25-79 27-39 30-03 27-11 26-45 Jan., Feb., March Oct., Nov., Dec. \ 27-01 28-80 31-86 29-09 28-05 April, May, June July, Aug., Sep. 26-25 30-57 35-35 31-88 29-06 The Year. 26-63 29-69 33-61 30-49 28-56 MAG. AND MET, OBS. VOL. I. Iu 138 ~ ABSTRACTS FOR THE MAGNETIC DECLINATION. TABLE IV.—The Yearly Decrease of Westerly Declination, as Deduced from the Four Daily Observations in the Five Months of 1841 and 1842. Mean of the Four Hours. July August September October November Means If the results for July and August be rejected, the mean of the other three months will be 3°40. TABLE V.—The Extreme Readings of the Declinometer for each Month from the Four Daily Observations. North End of Magnet Farthest Month. E. W. poo reneee Declination. rallies § Declination. 1841 dh wm. Se me doh m. Et nage’ July 12 20 0 25 21-80 15° °2)0 25 41-29 August 11 20 0 25 26-81 23 20 0 25 50-30 September 8 20 0 25 22-64 25 2 0 25 53-14 October 12 20 0 25 21-67 24 20 O 25 45-59 November 24 20 0 25 25-58 5p OU XO 25 49-77 1842. January 27 20 O 25 25-30 29 2 0 25 33-31 February 7 510 25 18-15 is) Ba 0 25 40-52 March Pies a0 25 21-23 30 2 0 25 42-80 April 24 20 O 25 20-85 | 14 20 0 25 52-33 May 18 20 0 25 21-38 || 16 5 O 25 49-71 June 220 0 25 19:92 | 10 2 0 25 40-63 July 20 20 O 25 20-93 97 2) 0 25 38-01 August 16 20 0 25 20-15 423 0 25 38-92 September 25 20 O 25 22.20 22 2 0 25 40-23 October 7) eS 25 16-43 8) Dao 25 36-80 November Litese 10 25 22.44 10) 2 10 25 38-37 December Sind) 0 25 18-83 2002-0 25 31-76 The range of the five months of 1841 from the Daily Observations is 31’-5. The Westerly Declination being least in October, 8°4 below the mean of the month; and greatest in September, being 209 above the mean of ~ the month. The range for 1842 is 359. The Westerly Declination being least in October, 109 below the mean of — the month ; and greatest in April, being 189 above the mean of the month. —_—-.—— ABSTRACTS FOR THE MAGNETIC DECLINATION. 139 TABLE VI.—The Extreme Readings of the Declinometer for each of the Term-Days, North End of Magnet Farthest Gottingen Gottingen Mean Time. Mean Time. Declination. Declination. 1841. July August September October November December 1842. January February March April May June July August September October November December The range of the six Term-days of 1841 is 51°45; the least Westerly Declination occurring in October, being 33°3 below the mean of the month; ; the greatest in August, being 12”4 above the:mean of the month. The range of the twelve terms in 1842 is 3774; the least Declination occurring in March, being 201 below the mean of the month; the greatest in April, being 13’-4 above the mean of the Sanh. TABLE VII.—The Extreme Readings of the Declinometer during Extra Observations for each Month in which Extra Observations were made. North End of Magnet Farthest Month. a Me Range. ewes ae ee 1841. dl jt jms ila Te Tae SA Lae August 20 22 40 O 25 35-28 20 23 20 O 25 38-30 || 3:02 September P35) 15), Gy) hfs) 25 21-07 25 6 20 18 27 1:56 | 100-49 1842. May 24 8 0 0 25 30-45 16 5 0 O 25 49-71 | 19-26 July ib BO) aby) Dis (ofS YH 21148 O 25 50-28 | 43-73 August G 6 3) 0 25 21-65 19 5 48 O 25 34-88 13-23 September 2 8° 24 0 24 54-28 Pil 22 oe) 25 37-30 43-02 October Li, b 24 0 25 5-08 Igyes) Eo) 25 32-87 27-79 November a iS O20 25 17-57 21 20 48 O 25 40-98 23-41 December 9 5 54 0 25 9-58 9 8 24° 0 25 36-22 26-64 The range of all the disturbances observed in 1842 is 56’. The ot Westerly Declination occurs in September, being 383°5 below the mean of the month ; the greatest in July, being 217 above the mean of the month. The range of Declination from all the observations of 1841 is 2° 4°7. The least Westerly Declination oc- curring in ave October term 1841, being 333 below the mean of the month; the greatest during the disturbance September 25. 1841, being 1° 29'-3 above the mean of the month. The range of all the observations in 1842 is 58’. ‘The least Westerly Declination occurring during the dis- turbance September 2. 1842, being 33°5 below the mean of the month; the greatest in the Daily Observation, April 14% 20" 1842, being iid9 atiove the wacan of the month. 140 TABLE VIII.—The Monthly Means of the Scale Readings of the Bifilar Magnetometer, as Corrected in this Volume, for 205, 23%, 25, and 5, ABSTRACTS FOR THE HorIZONTAL FORCE. Month. 5h, 1841. Se. Div., July 500-35 August 550-06 544-36 540-08 554°78 558°86 ) September eo 55427 S7574 593-05 f 558-26 552-32 564-55 585-93 485°32 484-42 496-05 507:19 October eae 495-14 517°36 aa 439-60 489-78 506-20 508-46 November 502-48 499.33 509-41 510-47 1842. January 516-45 513-28 522-98 522-81 February 517-62 514-61 523-82 528-07 March 518-40 513-20 525-92 532-65 April 510-58 507-32 524.48 537-73 May 524-78 520-31 533-78 542-47 June ~ 527-29 523-56 539-14 549-57 July 521-85 521-21 542.29 549-90 August 528-38 524-02 542-77 550-14 September 531-31 523-78 540-32 545-03 October 534-60 527-32 540-12 543-03 November 536-26 533-85 542-97 544-06 December 544.33 542-69 547-79 547-74 As there was an adjustment of the Bifilar Magnetometer between July and August, and between September and October 1841, the observations in July 1841 are not comparable with the others; August and September 1841 are comparable with each other only. In September 1841 and October 1841, the torsion circle was moved 50’, in order to make the middle of the scale nearly the mean reading, from which it had moved considerably in each case after the previous adjustment : there seems little doubt that this rapid change had some connection with torsion in the silver wires. It is very probable that this source of error still shews itself in November 1841. The observations from September 7¢ 20" till the end of September have been reduced to the value of v in August and beginning of September; those from October 64 to October 20% have been reduced to the value of ¥ after. In each case, the means of reduced and unreduced portions of the month have been printed in small type, the means in large type being the means for the month. A new and preferable value of q, the co-efficient for the temperature correction, having been obtained from — a comparison of the Daily Observations in 1844, the following Table has been formed ; it was thought well, however, to give the means as corrected in this Volume, for the purposes of comparison. ABSTRACTS FOR THE HorRIZONTAL FORCE. 141 TABLE IX.—The Monthly Means of the Bifilar Magnetometer Scale Readings, Corrected by a new value of q, for the Hours 20, 23, 2, and 5. Month. 1841. July August September October November 1842. January February March April May June July August September October November December Month. 1841. July August September October November 1842. January February March April May June v f \ { ‘ia 550°63 \ 204. Se. Div. 457-45 516-26 547-19 ni 487°27 480-26 496-56 509-23 508-33 509-69 501-46 512-82 512-32 507-23 512-29 517-88 524-91 526-42 532-20 204, Se. Div. 457-07 519-50 547-59 484-10 499-64 508-62 507-67 509-60 506-04 512-79 512-66 MAG. AND MET. OBS. VOL. I. 23, Sc. Div. 450-82 515-87 530-26 542-24 540-24 ATA1T 486-08 480-12 492-98 505-80 505-02 503-78 497-49 507-53 507-81 505-82 507-27 509-94 517-14 523-32 530-22 2h, Se. Div. 470-26 526-92 543-78 562°51 558-76 483-07 506-50 494.22 500-73 513-00 512-47 514-81 512-46 519-52 521-90 525-56 524-26 524-98 528-01 530-49 534-37 5h, Se. Div. 482-54 535-81 547°35 57917 572-54 494-02 499-04 } 496-41 501-21 512-05 515-60 520-74 523-95 527-10 531-11 532-15 530-58 528-64 529-90 530-86 533-79 rejecting days of marked disturbance. 23h, Se. Div. 454-23 516-45 541-44 481-28 495-01 505-55 504-91 504-36 501-21 507-51 508-50 Mean of the Four Hours. Se. Div. 523-71 594-68 487-75 497-87 510-02 510-35 512-25 508-84 516-74 518-28 517-69 518-60 520-36 524-99 527-77 532-64 The small type in September and October 1841 is explained for Table VII. The following Tables for the Horizontal force are corrected by the new value of q. The rule given after Table I. for the days of irregularity to be rejected, having been applied, the following Table has been formed. Mean of the Four Hours. Se. Div. Approximate Mean Daily Range. Se. Div. 31-72 19-94 32-30 16-29 8-23 7-20 10-58 16-96 26-46 19-57 23-30 26-33 23-31 18-70 12-76 7-54 4-15 Range from the Four Hours. Se. Div. 25-20 22.24 21-60 12-19 5-91 7-81 10-25 15-75 21-71 18-45 22-14 TABLE X.—The Monthly Means of the Bifilar Magnetometer Scale Readings, as Corrected in Table VIII., and 142 ABSTRACTS FOR THE HORIZONTAL FORCE. TABLE X.—continued. Mean of the Range from the Four Hours. Four Hours. 1842. Se. Div. Se. Div. July 517-81 22-64 August 518-15 21-48 September 24. 520-56 16-19 October 525-62 9-51 November 528-65 6-16 December 533-15 5-05 In Tables VIII. and IX. the mean of the four observations has been given as an approximate mean for each month ; the last column contains the range deduced from these four observations, and is probably not far from the true diurnal range. In all the months, with the exceptions of January and December 1842, 23" shews the least force of the four hours ; the greatest force is at 5". In January and December 1842, the greatest force is at 2"; in October 1842, and November 1841 and 1842, the force at 2" differs little from that at 5", The minimum seems therefore to occur throughout the year a little before 23" (or before 10" a, m. Makerstoun mean time) ; the maximum about 5® (or 45 p.m. Makerstoun time) in summer, and between 2" and 5" (or 1? and 4 p. m. Makerstoun time) in winter. In December 1842, the maximum occurs about 2" p.m. Makerstoun time. The diurnal ranges, as given in the last column, though affected by the shifting of the curve in the summer and winter months, shew markedly a great and regular increase from winter to summer, and decrease from summer to winter. Although the rejection of the days of irregularity have considerably softened the asperities in the Means of Table VIII., the depressions in June and July being considerably removed when compared with May, the depression in April still remains. The force on the whole increases from the beginning of the year till the end; the increase being most rapid after September 1842 ; and it is nearly constant for the summer months. The following Table has been deduced from Table X. TABLE XI.—The Means of the Bifilar Magnetometer Readings minus the least mean, in parts of the whole Horizontal Force, for periods of Three Months, for the Summer and Winter Months of 1842, and for the Year 1842, Period. Range. 1841. July, Aug., Sept. 0-00058 0-00000 0:00177 0-00288 0.00288 ———$$ | _. Oct., Nov. 0-00046 0-00000 0-00071 0-00112 0-00057 0:00112 1842. Jan., Feb., March 0-00256 0:00210 0.00312 0:00349 0-00282 0-00139 April, May, June 0-00279 0:00220 0-00378 0-00480 0-00339 0-00260 July, Aug., Sept. 0:00329 0-00257 0-00440 0.00509 0-00384 0-00251 Oct., Nov., Dec. 0-00502 0-00462 0-00540 0.00547 0-00513 0-00085 Jan., Feb., March 9 Oct., Nov., Dec. t 0-00379 0.00336 0-00426 0-00448 0-00397 0-00112 April, May, June, July, Aug., Sept. ; 0-00304 0-00238 0.00409 0-00494 0-00361 0-00256 The Year 0-00341 0-00287 0-00417 0-00471 0-00379 0-00184 The quarter, July, August, and September, is not comparable with the following period. The Means for 1842 shew a regular increase of force in the first three quarters ; in the last the force increases with more rapidity. ABSTRACTS FOR THE HORIZONTAL FORCE. 143 TABLE XII.—The least and greatest Readings of the Bifilar Magnetometer for each Month, from the Daily Month. 1841. July August September October November 1842. January February March April May June July August September October November December Observations. Bifilar Magnetometer. Lowest. Highest. Gottingen : Gottingen ‘ Masia me Reading. Micnalinne: Reading. G.. his). im Se. Div. Oc Now aay Se. Div. 19 23 0O 426-9 21 5 O 501-1 4 23 0 492.4 26 6 0 554-8 3 23 0 524-5 25 5 O 875-9 6 23 0 447-8 P52 110 638-6 18 20 0 438-0 18 2 0 515-9 21 23 O 496-0 25 2 0 519-6 23" 0 497-7 24 2 0 530-4 27 23 0 490-2 25) 0 2))0 534-5 14 20 O 446-8 15 5 O 549-9 17 23 0 495-6 16 5 O 555-4 13 23 0 490-8 20) 5) 0 542-8 3 20 O 429-6 4 2 0 609-8 5 23 0 479-8 19 5 0O 574-0 28 23 O 492-3 GB ©) 541-2 16 23 O 507-4 20 5 O 537-5 21 20 O 492.2 28 5 O 540-6 cs. 0 520-4 YAS) Py (0) 542-4 In the five months of 1841, the range of Horizontal Force from the Daily Observations is about 0.05708. The force being below the mean of the month 0-00760 in November, and above the mean of the month 0-04948 in September. In 1842, the range, in parts of the whole Horizontal force, is 0-02252. the month 0:01102 in July, and above the mean of the month 0-01150 in July. TABLE XIII.—The least and greatest Readings of the Bifilar Magnetometer on each Term-Day. 1841. July August September October November December Bifilar Magnetometer. Lowest. Gottingen Mean Time. aoe 3h.) an: 21 15 523 27 22 523 22 23 2h 20 14 322 27 § 421 22 10 323 Reading. Gottingen Mean Time. Se. Div. 423-6 509-2 543-0 441-0 496-5 492.1 The force being below the mean of Highest. Reading. Se. Div. 485-3 556-6 576-6 525-8 505-5 514-4 144 ABSTRACTS FOR THE HORIZONTAL FORCE. TABLE XIII.—continued. Bifilar Magnetometer. Highest. Gottingen : Gottingen : Mean Time Reading. Mean Time. |. Reading. 1842. / . Se. Div. . Gi. Se. Diy. January 498-8 515-4 February 501-1 517-4 March 463-7 558-3 April 455-0 538-6 May 508-5 536-3 June 497-7 553-1 July 507-9 533-5 August 507-0 539-4 September 503-6 564-3 October 514-7 562-8 November 522-4 537-7 December 529-1 537-3 ee OMNI TIAwWoOAneoe The range, in parts of the whole horizontal force of the five terms of 1841, is about 0:01060, The greatest and least occurring in the October term, being 0-0571 below, and 0-00489 above the mean of the month in Table X. The range of the terms of 1842 is 0.01242. The least being 0.00696 below the mean of the month in April ; and the greatest 0-00546 above the mean of the month in September. TABLE XIV.—The lowest and highest Readings of the Bifilar Magnetometer during Extra Observations for each Month, in which Extra Observations were made. Bifilar Magnetometer. Lowest. Highest. Gottingen Gottingen Mean Time. Reading. Mean Time. Reading. 1841. Batak . | 5: . Div. dd) ah.) 4m. is; Se. Div. August 20 22 42 30 . 20 23 2 30 520-7 September 25 6 58 55 . 903-7 1842. May July August September October November December 555-4 621-1 574-0 567-3 545-3 537-2 545-8 coooococo ooococococo The range of the observed portion of the disturbance, September 1841, is 0-041638 ; the lowest being 0-01207 above, and the highest 0-05370 above the mean of the month. The range of the observed disturbances of 1842 occurs in July, and is 0-04850. The lowest being 0.03059 below, and the highest 0-01291 above the mean of the month. The range of all the observations in 1841 is about 0-06130. The lowest being in the Daily Observation, November 18.=0-00760 below the mean of the month ; the highest 0-05370 above the mean of the month, occurs — in the disturbance September 1841. The range of all the observations in 1842 occurs in the July disturbance given above. ABSTRACTS FOR THE VERTICAL FORCE. 145 8 TABLE XV.—Containing the Monthly Means of the Balance Magnetometer Readings, as Corrected in this Volume, for the Hours 20, 23, 2, and 5. Month. 204, 23h, 2h, 5h, Range from the Four Hours. 1841. Mic. Div. Mic. Div. Mic. Div. Mic. Div. Mice. Div. July 738°3 744-6 765-7 784-8 46:5 August 715-4 7158 707-1 724.4 17-3 September 659-9 676-2 677°8 704.4 44.5 October 629-7 655-2 681-6 699-9 70-2 November 621-8 641-8 645-2 655-9 34-1 1842. 948-0 961-8 941-4 949-2 20-4 January 938-1 956-0 935-0 937-5 21-0 February 907-4 918-8 907-2 921-8 14-6 882-9 887-7. 864-9 878-4 22-8 March 880-5 891-3 885-4 - 900-6 20-1 859-9 886-1 907-5 924-7 64:8 April 868-4 867-1 848-8 870-1 21-3 May 858-0 841-6 837-9 845-2 20-1 June 820-0 815-2 801-6 812-4 18.4 July 783-3 772-3 . 777-2 814-9 42-1 August 774-3 768-4 764-4 793-9 29-5 September 769-6 778-4 781-1 795-9 26-3 769-1 776-7 769-1 775-9 7-6 October 755:5 769-3 760:6 771-8 16-3 November 731-4 747-6 747-1 750-9 19-5 December 705-2 710-1 709-4 709-4. 4:9 None of the months in 1841 are comparable with those of 1842; and only October and November in 1841 are comparable with each other. Those months for which two values of T (the time of the Balance needle’s vibra- tion in a vertical plane) are used, have the means of the readings corrected according to each value of T given separately. c Another value of g having been obtained from the Daily Observations in 1843-4, has been applied, and the following Tables formed. MAG. AND MET. OBS. VOL. I. 20 146 ABSTRACTS FOR THE VERTICAL FORCE. TABLE XVI.—The Monthly Means of the Balance Magnetometer Readings, Corrected by a new value of q, for the Hours 20, 23, 2, and 5. Range from the Four Mean of the Hours for Four Hours. Each Month. | Two Months. Mic. Div. Mice. Div. Mice. Div. July 58-1 | _— 40:3 August 22-6 Seanees 57s: | ee SS eee 39-0 September 55-4 ee ee ee eee eee eee | eee 67-0 October 78:7 61:3 November 43-9 1842. January February March April August September October November December The means for 1841 are not comparable with those for 1842; and of the months in 1841, only October and November are comparable with each other. In the five months of 1841, the lowest reading is shewn at 20", the highest at 5"; in August 1841, there is a maximum at 23", and a@ minimum at 2%. The force increases in the remaining four months from 20° till 5% In July, a minimum seems to occur after 20"; and in September, the force increases but slightly from 23" till 2. In 1842, the highest reading is at 5". In January, February, and March, a maximum occurs about 23%, and @ minimum about 2" ; the lowest readings in these three months is at 205. In April, and the last four months of the year, the readings increase from 20? till 5". In May @ minimum occurs about 0", in June about 0%, in July and August about 235. The minimum thus seems to shift from January till June, and from June till December, occurring probably before 20 in the winter, and about 1" in midsummer. a The means of the four hours shew a continued diminution of the vertical force, which is irregular from month to month. The ranges for each month, and for each two months, are irregular ; they shew, on the whole, an increase of range in the summer compared with the winter months. The following Table has been formed from the above. ABSTRACTS FOR THE VERTICAL FORCE. 147 TABLE XVII.—The Means of the Balance Magnetometer Readings, for periods of Three Months, for the Summer and Winter Months, and for the year 1842. 204, 23h, 2h, 5h, Mean. Periods. ee Mic. Diy. Mic. Div. Mice, Div. Mic. Div. Mic. Div. 776-9 787-5 797-5 822-3 1841. July, Aug., Sept. 654-2 678-2 699-5 715-5 October, November 1842. Jan., Feb., March 958-1 971-7 964-9 980-6 968-8 April, May, June 906-0 905-8 907-5 925-5 911-2 July, Aug., Sept. 850-0 849-5 856-9 888-7 861:3 Oct., Nov., Dec. 797-9 811-7 817-4 826-1 813-3 Jan., Feb., March, ) Oct., Nov., Dec. April, May, June, July, Aug., Sept. i The Year. 878-0 891-7 891-1 903-3 891-0 878-0 877-6 882-2 907-1 886-2 878-0 884-7 886-7 905-2 888-6 In the periods of 1841, the force increases from 20 till 5”. The first quarter of 1842 shews a minimum to occur about 20", and before 2" ; in the second quarter, the minimum seems about 23"; the third, between 205 and 23"; and in the last quarter, about 20", The highest mean is always at 5", The means for the winter months exhibit a minimum about 2"; the means for the summer months have @ minimum between 20® and 23%. The means for the year exhibit an increase of force from 20 till 5", the increase from 28" till 2" being very small, The mean of the four observations for each quarterly period shews a very regular diminution of vertical force. The ranges are still irregular. The following Table has been formed by rejecting disturbances, according to the rule given after Table I. TABLE XVIII.—The Monthly Mean Readings of the Balance Magnetometer, for the Hours 20, 23, 2, and 5, as Corrected in Table XVIL., and rejecting disturbances. Mean of the || Range of the Four Hours Four Hours for each For each For each Month. Month. two Months. Mic. Div. Mic. Div. Mic. Div. Mic. Div. Mic. Diy. Mie. Div. July 818-8 817-1 836-1 860-6 43:5 August 808-7 809-5 799-1 817-6 18-5 September 731-4 745-4 737-2 765-4 34:0 ————S| October 683-1 691-9 690-9 706-9 23-8 November 654-4 657-3 665-5 675-1 20-7 148 ABSTRACTS FOR THE VERTICAL FORCE. TABLE XVIII.—continued. Mean of the || Range of the Four Hours Four Hours of each For each For each Month. Month. Two Months. 1842. 6 Mic. Div. z Mice. Div. Mic. Div. Mic. Div. January 995-3 998-3 993-3 11-1 February 981-2 979-9 977-9 March 937-7 943-0 934-2 April 920-9 936-9 924-3 May 904-0 944-0 916-4 June 893-0 900-6 893-9 July 849-2 8925 || 866.9 August 854-0 860-0 855-5 September 847-9 868-8 853-1 October 827-3 843-1 828.2 November 814-4 826-1 816-0 December 788-7 795-1 789-8 The rejection of disturbances produces a considerable difference in the results deduced from Tables XVI. and — XVII. In 1841, the highest means occur at 5"; the lowest mean in July is at 23, in August at 2, and in Sep- tember, October, and November, at 20%. A maximum occurs in August, September, and October, about 23°. A minimum occurs in July, between 20" and 234, in August, September, and October, about 2". In 1842, the highest means, with two exceptions, are at 5"; in February, the highest is at 23", and in August, - at 20"; but they differ little from the mean at 5®. The lowest means in the first three and last four months of the year are at 20". In the remaining months at 25. In March, the means at 205 and 25 are equal. A maximum occurs in January, February, and March, about 23%, in October about 22". A minimum occurs in January about 2", in February between 2" and 5, in March, April, May, June, July, — August, and October, between 23" and 25. The mean of the four hours for each month shews a decrease of vertical force from the beginning to the end of the year ; the diminution from month to month is rather irregular. The ranges for each month are irregular ; but when the mean of each two months is taken, the increase of sange from summer to winter is very regular, and well marked. The following Table is formed from Table XVIII. q ABSTRACTS FOR THE VERTICAL FORCE. 149 TABLE XIX.—The Means of the Balance Magnetometer Readings minus the least Mean, in parts of the whole Vertical Force, for periods of Three Months, in 1841 and 1842, for the Summer and Winter Months, and Year of 1842. Periods. 204, 23, 2h, 5h, Mean. Range. 1841. July, Aug., Sept. 0-00000 | 0-00006 | 0-00006 | 0-00037 0-00037 Oct. and Nov. 0-00000 0.00008 0.00012 0-00029 0-00029 1842. Jan., Feb., March 0-00211 0-:00222 0:00215 0-00225 0-00218 0-00014 April, May, June 0-00146 0-00137 0-00130 0-00165 0-:00144 0-00035 July, Aug., Sept. 0.00080 0:00065 0-00062 0-00095 0:00075 0-00033 Oct., Novy., Dec. 0:00000 0:00012 0-00016 0:00027 0-00014 0-00027 Jan., Feb., March, \ 0:00105 0-00117 0-:00115 0-00126 0-:00116 0-00021 Oct., Nov., Dec. April, May, June, \ July, Aug., Sept. 0-00113 0-00101 0-00096 0-:00130 0-00109 0-00034 The Year 0-00109 0-00109 0:00106 0-00128 0-00113 0-00022 The means for July, August, and September 1841, indicate a maximum before 23", and a minimum before 2»; the means of October and November 1841 still indicate a maximum before 23", and a minimum before 2%, but it is much less evident. In the first quarter of 1842, a maximum at 23, and a minimum at 2", are well indicated ; in the second and third quarters, only the minimum before 2" is evident, but a maximum in both cases probably occurs between 20% and 235, The last quarter of 1842 has the same character as that for 1841. The means for the winter months shew a maximum before 23, and a minimum nearer 2" than 235, The means for the summer months shew the minimum about the same time as in the winter months, but the maximum earlier. The means for the year 1842 shew a maximum between 20” and 2", and a minimum about 1, In forming the above Table & was taken=0-0000138. TABLE XX.—The greatest and least Readings of the Balance Magnetometer for each Month from the Daily Observations. Balance Magnetometer. Month. OEE AUS Range. seaman | neaang, | S2ttngen | eating 1841. ch as Mie. Div. Ga VMs Mic. Div. Mic. Div. July 19 20 733-2 aoe 916-7 183-5 August 26 20 707-0 6 5 / 907-0 200-0 September 24 20 639.0 25 2 990-2 351-2 October 20 20 ) 1849.9 25 2 cere ae 631-2 November | 3 20 526-6 20 2 769-5 242-9 MAG. AND MET. OBS. VOL. I. 2P 150 ABSTRACTS FOR THE VERTICAL FORCE. TABLE XX.—continued. Balance Magnetometer. Lowest. Highest. Gottingen Gottingen Mean Time. Reading. Cy Re Mean Time. Reading. Gh its Mic. Div. ad oh 955-8 Mic. Div. 1038-2 1542. January 31 20 February 11 20 852-3 1138-6 March Dey 53 879-7 1003-2 April 14 609-3 1097-4 May 28 873-1 1087-4 June 845-1 930-6 July 693-7 1140-8 August 786-8 1228-5 September 810-5 940-5 October 811-8 929-0 November 701-0 906-1 December 769-4 842-7 The range of the Daily Observations in 1841, in parts of the whole Vertical Force, is 0°00820; the greatest and least occur in October, and are 0:00634 above, and 0:00186 below, the mean of the month. The range of the Daily Observations in 1842 is 0 00394; the greatest force being in August 0-00485 above the mean of the month, and the least occurs in April, being 0:00409 below the mean of the month. TABLE XXI.—tThe greatest and least Readings of the Balance Magnetometer for each of the Term-Days. Balance Magnetometer. Lowest. Highest. Range. 1841. July August September October November December Gottingen Mean Time. Reading. Gottingen Mean Time. da vhs m. 21 16 472 17 12 573 2210 72 20 19 272 97 1 572 22 18 572 Mic. Div. 761-1 541-1 671-7 514-9 646-5 620-3 d. 21 28 23 Reading. Mie. Div. 862-9 —— 897-5 743-9 822-7 678-0 716-6 Mic. Div. 101-8 356-4 ABSTRACTS FOR THE VERTICAL FORCE. 151 TABLE XXI.—continued. Balance Magnetometer. Lowest. Highest. Gottingen : Gottingen : Mean Time. Reading. Mean Time. Reading. 1842. d. h. m. Mice. Div. d. Ings 7a, Mie. Div. Mic. Div. January 19 12 40 972-0 20 9 58 1038-1 66-1 February 25° 20) 10 937-6 26 0O 28 973-3 35-7 March 23) NOs 574-9 23 10 4 991-2 416-3 April 20 16 28 783-9 Ze 128 1024-4 240-5 May 27 13 34 844-6 27 18 52 921-1 76:5 June 22 15 28 787-1 93) Tf BP) 953-7 166-6 July PL) Asie Ufo) 825-2 2 he pe 896-6 71-4 August 26 13 52 764-9 26 10 4 854-8 89-9 September 21 13 46 716-5 22) 4 58 871-2 154-7 October 19 13 46 772-8 19 20 52 856-3 83-5 November 25 16 52 785-6 26 2 16 824.5 38-9 December 20 22 28 760-6 Dil Bo Bye 807-0 46-4 The range of the Term-Day Observations in 1841 is about 0:00516, in parts of the whole Vertical Force. The greatest force occurs in October, being 0-00168 above the mean of the month ; the least occurs in August, being 0:00348 below the mean of the month. In 1842, the range is about 0:00644, in parts of the whole Vertical Force. The greatest force occurs in April, being 0-00130 above the mean of the month; and the least in March, being 0:00514 below the mean of the month. TABLE XXII.—The greatest and least Readings of the Balance Magnetomer during Extra Observations for each Month in which Extra Observations were made. Balance Magnetometer. eee Lowest. Highest. Bema Gottingen 4 Gottingen s Mean cane Reading. Mean Tere Reading. 1841. do by) etn eS. Mie. Div. Gk dng a EE Mie. Diy. Mic. Div. August 20 22 57 30 789 20 22 47 30 793 4 September 20, 6 1°30 699 25 4 6 30 1150 451 1842. May 25 3) 26; 0 890 16 5 23 O 1166 276 July 2° 11-48" "0 160 2 053 0 1200 1040 August 16 20 36 0O 781 19 4 58 0O 1229 448 September 20 19 58 O 814 2 3 34 0 995 181 October fe 47338) 0 821 tf 5 40) 0 871 50 November 21 19 56 O 691 3 7 56 O 955 264 December 5 20 52 0 744 9 7, 4.0 964 220 The range of the observed portion of the disturbance September 1841, is 0:00685; the greatest force being 0:00526 above, and the least 0°00060 below, the mean of the month. The range of the disturbances of 1842 is 0:01405. The least force occurs in July, being 0°00919 below the mean of the month; the greatest occurs in August, being 0:00486 above the mean of the month. The range of all the observations in 1841 is about 0°00982; the lowest occurring in the August term, being 0:00348 below the mean of the month, and the highest on October 25, being 0:00634 naw the mean of the Tiodih. The range of all the observations in 1842 is iihat of the disturbances given above. 152 ABSTRACTS FOR DISTURBANCES. TABLE XXIII.—Containing the Days of Disturbance and the Ranges of the Three Magnetometers from the Observations at 205, 235, 28 and 52. Range. Range. Mean tine, > | dentin: | ag, games |! een times | Dain: | ee eat meter, areter: eas a meter. meter. meter. 1841. HAs wat 1842. jie s0—15 5 | ioa | 351 | 847 | Jan. 17 2018 5 131 | d74 | 706° 19 20—20 5 2-88 52-3 147-8 Feb. 0 20— 15 3-91 16-0 82-7 20 20—21 5 13-17 57-1 69-1 6 20== fap 11-08 17-8 47-9 Aug. 5 20— 6 5 6-95 55-7 119-0 11 20—12 5 8-05 19-1 140-1 6 20— 7 5 9-08 17-4 76:3 165 20> 22-15 15-4 181-3 23 20—24 5 13-40 42:8 50:3 17,.20=—185 19-19 21-9 127-5 260202790 13-07 21-5 140-4 2220-24 ol terete 21-5 103-0 Sept. 0 20— 1 5 9-00 EDA Maleleleiete 27 20—28 5 6-19 9-6 61-0 12520-1355 16-88 29-1 158-1 March 18 20—19 5 13-78 21-2 52-6 24 20—25 5 22-69 359-2 30122) 2720—28m0 7-35 43-8 104-5 26 20—27 5 9-88 49-1 235-5 29 20—30 5 11-67 23-7 56-0 28 20—29 5 3-62 299-1 190-9 April 10 20—11 5 9-88 40-4 191-9 Oct. 7 20— 8 5 15-55 42.7 116-7 11 20—12 5 14-12 19-9 93-1 8 20— 9 5 4.23 33-1 60-3 12 20—13 5 17-85 67-4 181-2 11 20—12 5 5:96 43-3 19-7 14 20—15 5 15-41 103-2 488-0 20 20—21 5 6-50 21-1 249-7 15 20—16 5 9-88 29-5 79-1 24 20—25 5 18-45 155-7 605-3 18 20—19 5 9-98 26-1 80-7 25 20—26 5 18-31 16-4 300-3 20 20—21 5 7:13 16-1 81-8 27 20—28 5 8-29 16-0 154-5 24 20—25 5 16-78 25-1 11-1 Nov. 6 20-455 18-86 34:9 242-5 May 15 20—16 5 23-66 55:0 186-7 4 20— 5 5 15-71 16-0 120-5 | 16 20—17 5 11-18 20-6 80-0 9 20—10 5 7:00 4:3 27-2 18 20—19 5 11-29 14-6 65-0 17 20—18 5 3:93 23-4 11:5 June 3 20— 45 15-62 22-4 | 47-3 18 20—19 5 14-45 62-9 148-0 9 20—10 5 14-68 26:8 74:9 19 20—20 5 7-40 37-2 149-1 12 20—13 5 11-46 25:5 71-0 22 20—23 5 4-97 12-1 35-0 13 20—14 5 8-40 51-6 87-6 © ABSTRACTS FOR DISTURBANCES. 153 TABLE XXIII.—continued. Range. . Range. nen Be | Doin | tts [pene | atom Bie. Dato. | yee | syne meter. meter. meter. meter, meter. meter. 1842. 1842 mes GE 8 a. hi , Se. Div. Mie. Div. Ceile d. h. Ly Se. Div. Mie. Div. July 120—25 | 11-62 77.5 | 1939 | Oct. 12 20-135 || 10-15 0-8 96-5 3 20— 4°5 9.37 | 180-0 | 548.2 13 20—14 5 7-45 8-9 89-5 8 20— 9 5 5:77 37-0 | 180-7 16 20-17 5 || 15-84 28-1 44-6 22 2023 5 7-57 42-1 79-3 18 20—19 5 || 11-46 135) |. 1270 Aug. 0 20—15 | 10.48 38-9 98-8 | Nov. 120—25 7-60 5:6 50-7 5 20—65 | 10-75 33.4% | 181-7 9 20-10 5 || 12-35 24.4 | 115-7 17 20—18 5 7-85 35:3 | 106:9 10 20—11 0 || 10-20 13-9 90-2 is 20-195 | 748 78-0 | 411-2 20 20—21 5 3-09 16-7 53-7 23 20-24 5 || 14.77 11-4 82-8 21 20—22 5 7-79 35-4 | 205-1 Sept. 1 20— 25 8-55 18-2 | 106-2 22 2023 5 5-26 28-5 60-1 8 20—95 | 11-21 36-5 69:9 | Dec. 5 20—65 5-30 11-4 16-4 12 20-13 5 || 16-25 38-7 26-9 7 20815 9.44 rhe) 24-1 16 20-17 5 7-13 13-3 96-0 8 200—95 2-09 12-4 58-7 28 20-29 5 || 12.83 40-5 | 115-8 29 20—30 5 7-39 14.7 38-1 Oct. 720—85 | 10-68 26-9 25-6 The above Table has been formed thus; if a, b, and c, be the mean range for three successive months, as given in Tables I., IX., and XVI, those days in the month whose range is 6, have been considered days of dis- a+2b-+e turbance if the range of the four daily observations, for any of the three Magnetometers, exceeds Sener Tare When there is not a month preceding or succeeding, the sum b+¢ or a+b has been used. In many of the days only one or two of the instruments shew ranges exceeding the test. In the formation of Tables II., X., and XVIII., those days only have been rejected in which the range for the instrument to which the Table belongs has exceeded the test. All the ranges of the two force Magnetometers given above have been corrected by the new values of q. The following Table contains several days in which the irregularity is well marked, but which are not in- eluded in the above. TABLE XXIV.—Days of Marked Irregularity not determined by the Rule used in the formation of Table XXIII. ~“ 1841. 1842. dd. a 4 ale ytd August 15—16 November 8— 9 February 1— 2 September 18—19 9—10 April 0-—— 1 23—24 LOH April 25—26 2930 11—12 July 4— 5 October 6— 7 12—13 August 4— 5 12—13 2223 November 1— 2 MAG. AND MET. OBS. VOL. I. 2a 154 ABSTRACTS FOR THE MAGNETIC Dip. TABLE XXV.—Monthly Means of Magnetic Dip, from Observations of Needle No. 1. Magnetic Dip. u Month. ree From Three Months. Ne P.M. Mean of A.M.| A.M. minus and P.M. P.M. 5 A.M. | P.M. A.M. P.M, Mean. ees 1841. singe? ous a J (als Wile ofl September 1 2 71 14-19 | 71 14-18 | 71 14-18 + 0-01 : " ‘ — October 4 4 71 18-67 | 71 14-14 | 71 16-40 + 4-53 15-00 | 13-79 | 14-39 + 1-21 November 5 4 WABI WZ ib ee By ral eerie: — 1-02 December 1 Til stileehih 1842. January 3 2 71 9-94 | 71 10-66 | 71 10-30 — 0-72 February 3 4 71 13-53 | 71 14-04 | 71 13-88 — 0-51 11-74 11:99 | 11-86 — 0-25 March 4 4 Ti Views eel W061 71 11-18 + 1-14 April 4 5 71 15-58 | 71-13-43 | 71 14-50 + 2-15 May 4 3 7 12-03) 17 We92- | 71: 12547 _ oso 13-35 | 12-32 | 12-83 + 1-03 _ June 4 4 71 12-45 | 71 10-47 | 71 11-46 — 0-02 July 3 5 71 14-60: | 71 13-20 | 71 13:90 + 1-40) August 5 71 13-81 71 13-452 13-70 12-98 13-34 + 0-72 September || 4 & .| 71 12-87 | 7 12-75 | 71) 128h +0 19 October 5 5 10-57 | 7 Wi-12 "71 10:84 — 0-55 November 3 3 71 9-13 | 71 6-60 | 71 7-86 + 2-53 9-77 9-08 9-42 + 0-69 December 4 2 Wie 9:25 Nl 19:50SN71y 9257 — 0-25 The above Table has been formed by subtracting 12’ from the means of the original observations, as a correc- tion for the axle and copper circle. The a.m. observations were made between 20" and 21"; the p.m. observations about 65, The diminution of Dip in 12 months has been deduced from four comparisons, as under :— ; Sept., Oct., and Nov. 1841, compared with Sept., Oct., and Nov. 1842, gives Ad = —3°59. Bele Mirae nc eae ere ete cee or cence eater ceee aareneine Oct., Nov., and Dec. 1842, ......... =—4:59. Oct..and Nov. TS41G) eethscceen cane Octrand Nove dliG420 5 seeece eee = — 5:22. Ae are eget See eens Maen cee eaten, NOVEM ecamlodc- geen sep cae == Sone Mean of all = — 4°88. In all cases, the means of all the observations in the given period has been used, and not the mean of the monthly means for the period. With the exception of the first quarter of 1842, the quarterly means give the Dip greater in the morning. than in the evening; giving the quarterly differences A.M. minus P.M. equal values the mean of the whole is 068. The ebsceraribac of 1842 evince a greater difference in summer than in winter. TABLE XXVI.—Mean Magnetic Dip for periods of Six Months, and for the Year 1842. Magnetic Dip. | PeMe Mean. A.M. minus P.M, 1842. J 4 First Six Months . . 12-39 + 0-45 Last Six Months . : 11-47 + 0-51 First and Last Quarters . : 10-64 + 0-22 7 Second and Third Quarters : 2-65 13-08 + 0:87 The Year : . 11-95 + 0-42 Three Months of 1841 and Twelve Months of 1842 \ 12-40 oP ABSTRACTS FOR THE MAGNETIC Dip. 155 TABLE XXVII.—Monthly Mean Values of A 4, the Differences of Magnetic Dip, for the Observation Hours of Month. January February March April May June July August September October November December AY yr «was obtained from Table X., and Mean of the Four Hours. 6-00 5-83 4.92 4-98 4-10 3-55 3-27 3-07 2.73 1-73 1:17 0-22 The Table above was computed from the formula Aé=4 sin Dat AX x AA Y The following Table has been formed from the above. AX 4 Mean of 205 and 5}, 5-91 5-60 4-59 4-57 3-94 3-20 Sni8 2.78 2-43 1-54 1-05 0-15 from Table XVIII. ; ¢ being taken at 71° 18’. 1842, deduced from Tables X. and XVIII. ; the value of A @ December 2" being taken as Zero. Difference of 205 and 51, 0-40 0:88 1:17 2.03 1-36 2.28 217 2-10 0-89 0-20 0-20 0-16 TABLE XXVIII.—Mean Values of A 4 for Three Months, for the Summer and Winter Months, and for the Year 1842. Period. 202, 23h, Qn, 5h, Mean of the Range. Mean of Difference of Four Hours. 204 and 54, || 205 and 5h, 1842. é: ¢ or é ¢ 7 A 4 ¢ Jan., Feb., March 5-78 6.37 5-23 4-96 5-58 1-41 5:37 0-82 April, May, June 4-85 5-38 3-65 2-96 4-21 2-42 3-90 1:89 July, Aug., Sept. 3-64 4-23 2-30 1-92 3-02 2-31 2-78 1-72 Oct., Nov., Dec. 1-01 1-56 0-78 0-82 1-04 0-78 0-91 0-19 Jan., Feb., March, Oct.. Nov., Dec. 3-39 3:96 3-00 2-89 3:31 1:07 3-14 0-50 April, May, June, 4.24 | 480 | 297 | 9.44 3.61 2.36 3-34 1-80 July, Aug., Sept. The Year 3-82 4-38 2-99 2-66 3-46 1:72 3-24 1-16 The columns containing the means and differences of 20" and 5" have been given for comparison with the Maenetic Dip, obtained from the Inclinometer at these hours. The winter months indicate a maximum Dip about 23", and a minimum between 2" and 5", apparently nearer 5 than 2? in the first quarter of 1842, but nearer 2 than 5" in the last quarter. to occur somewhat earlier, and the minimum later, in the summer than in the winter months. The ratio of the difference of Dip at 20" and 5" in winter to that in summer is nearly the same from both Tables XXVI. and XXVIII., though the quantities arerather different. The annual diminution of Dip from Table XXVII. appeais greater than that from the observation of the Inclinometer. The maximum seems 156 ABSTRACTS FOR THE TOTAL INTENSITY. AR if : TABLE XXIX.—Monthly Mean Values of R” the Differences of Total Magnetic Intensity, in parts of the whole force, for the Observation Hours of 1842; deduced from Tables X. and XVIII., the value of eS December 20" being taken as Zero. Mean of the Rewee Month. 204, 23h, 2h, 5h, Four Hours. For each |For each Two Month. Months. January 0-00208 0-00214 0-00220 0-00227 | 0-00217 0-00019 0-00018 February 0-00191 0-00196 0-00200 0-00208 0-00199 0-00017 0-00024 March 0-00140 0-00146 0:00147 0:00172 0-00151 0-00032 0.00039 April 0-00131 0-00121 0-00130 0-00168 | 0-00137 0-00047 } 0-00058 May 0-00132 0-00110 0-00121 000180 | 0-00136 0-00070 3 I 0-0005 June 0:00107 0-00099 0-00108 0:00136 | 0-00112 0-00037 0:08 -00058 July 0-00094 0-00046 0-00055 0-00125 0-00080 0:00079 0.00056 -0005 August 0-00067 0-00052 0-00064 0-00086 | 0-00067 0.00034 ocone -00040 September 0:00049 0-00050 0:00076 0:00095 0-00067 0.00046 0-00040 | ‘0004 October 0-00032 0:00035 0-00045 0-00067 | 0-00045 0-00035 0.0003 | : 4 November 0-00016 0-00028 0 00044 0:00049 | 0-00034 0-00033 600026 00 December 0:00000 0-00005 0-00016 0-00019 | 0-00010 0-00019 . IS WE AX 2) = + cos X This Table has been computed from the formula — = sin2 ak R TABLE XXX.—Mean Values of for Three Months, for the Summer and Winter Months, and for the ‘Year 1842. Period. , , Qh, 5h, Range. Mean of the Four Hours. 1842. Jan., Feb., March 0:00180 0-00185 0-:00189 0-00202 0-00022 0-00189 April, May, June 0-00123 0-00110 0-00120 0-00161 0-00051 0-:00128 July, Aug., Sept. | 0:00070 0:00049 0-00065 0-00102 0-00053 0-00071 Oct., Nov., Dec. 0.00016 0.00023 0-:00035 0-00045 0-:00029 0-00030 Jan., Feb., March, Oct., Nov., Dec. } 0:00098 0-00104 0-:00112 0-00123 0-00025 0:00109 April, May, June, \ 0-00096 0-00080 0-00092 0-00132 0.00052 0-00100 July, Aug., Sept. The Year 0:00097 0-00092 0-00102 0-00128 0:00036 | 0-00105 A maximum of total intensity probably occurs in the winter months before 23", and a minimum between 23) and. 2®. The maximum seems to occur earlier in the summer months, and the minimum nearer 23" than 2", The total intensity decreases from quarter to quarter, the rapidity of decrease diminishing rather regularly, — ABSTRACTS OF THE RESULTS METEOROLOGICAL OBSERVATIONS, GENERAL SIR T. M. BRISBANE, Barr, MAKERSTOUN. 1841 anp 1842. MAG. AND MET. OBS. VOL. 1. , 2k ABSTRACTS FOR THE BAROMETER. TABLE I.—Monthly Means of the Height of the Barometer, corrected for temperature. Month, 20h. 23h Qn. 5h Mean of the Four Hours. 1841. in. in. in. in. in. July 29-435 29-470 29-482 29-487 29-468 August 29-576 29-566 29-553 29-569 29-566 September 29-479 29.492 29-487 29-468 29-481 October 29-350 29-392 29-363 29-382 29-372 November 29-433 29-493 29-450 29-440 29.454 1842. January 29-594 29-611 29-568 29-568 29-585 February 29-592 29-609 29-606 29-641 29-611 March 29-502 29-500 29-483 29-459 29-486 April 29-980 29-978 29-923 29-905 29-946 May 29-656 29-643 29-602 29-601 29-625 June 29-780 29-773 29-765 29-742 29-765 July 29-680 29-676 29-657 29-651 29-666 August 29-718 29-721 29-731 29-717 29-722 September 29-664 29-669 29-635 29-630 29-650 October 29-692 29-695 29-678 29.665 29-682 November 29-440 29-451 29-454 29-450 29-449 December 29-618 29-655 29-655 29-673 29-650 in. Mean Height of the Barometer for the five months of............ 1841, 29-460. 7 HER Hae CR ey et HAE correspondingy 1s /201. 0 i. csc :cechadeess LOLS, 29°634. A maximum pressure occurs in both years in August, and a minimum in October 1841 and in November 1842. The greatest mean pressure is that for April 1842 ; the least that for October 1841 ; the range being 0-574, TABLE II.—Mean Height of the Barometer for periods of Three Month, for the Summer and Winter Months of 1842, and for the Year 1842. : ‘ Mean of the Period. 204, 23, 2h, 3h, Rour Heeae 1841. in. in. in. in. in. July, Aug., Sept. 29-497 29-509 29-507 29-508 29-505 October, November 29-391 29-442 29-406 29-411 29-412 1842. Jan., Feb., March | 29-563 29-573 29-552 29-556 29-561 April, May, June 29-805 29-798 29-763 29-749 29-779 July, Aug., Sept. 29-687 29-689 29-674 29-666 29-679 Oct., Nov., Dec. 29-583 29-600 29-596 29-596 29-594 Jan., Feb., March, = ' Oct., Now Des 29.573 29-586 29.574 29-576 29-577 April, May, June, ; t July, Aug., Sept. 29-746 29-743 29.718 29-707 29-729 The Year 29-660 29-665 29-646 29-642 29-653 s . . . ad, S h A maximum seems to occur about 23" in winter, and before 23" in summer; a minimum between 2? and in winter, and nearer 5 than 2" in summer. The pressure in the three months, July, August, and September 1841, is about as much greater than that in the two following months, as the pressure in the third quarter of 1842 is greater than that in the last quarter. Month. 1841. July August September October November 1842. January February March April May June July August September October _ November December Gottingen Mean Mime. ABSTRACTS FOR THE BAROMETER. Month, as obtained from all the Observations. Highest Baro- meter. Gottingen Mean Time. 20 20 The greatest meee of the Barometer in the five months of 1841 was in November, The least The greatest -- The least Mieke ieee. - Lowest Baro- Range for the ce ee meter. Month. Towa. in. in. in. 29-176 0-643 29-497 29-104 0-812 29-510 28-484 1-554 29-261 28-669 1-315 29-326 28-262 1-984 29-254 28-509 1-627 29-322 28-821 1-382 29-512 28-898 1-215 29-505 29-072 1-082 29-613 28-539 1-737 29-407 28-950 1-237 29-568 28-987 1-140 29-557 29-334 0-763 29-715 29-035 1-210 29-640 28-631 1-673 29.467 28-553 1-696 29-401 28-764 1-499 29-513 in. 30°246. . November, 28°262. 1842 setae October, 30°304. January, 28-509. 159 TABLE II1.—Containing the Highest and Lowest Readings of the Barometer, corrected for Temperature, in each While there is no marked difference in the summer and winter ranges of pressure to be deduced from the With two exceptions, the means of the highest and lowest are less than the means of the four hours. TABLE IV.—Means of the Highest and Lowest Pressures in Table IIT. Periods. Highest. Lowest. Yoana Five Months of 1841 30-001 28-739 29-370 The same Five Months of 1842 30-204 28-908 29-556 The Year 1842 30-196 » 28-841 29.568 means at the observation hours, the extreme ranges of pressure are markedly greater in winter than in summer. 160 ABSTRACTS FOR THE BAROMETER. TABLE V.—Monthly Means of the Height of the Barometer minus the Pressure of Aqueous Vapour. h h h Mean of the Month. 20%. 23h, Qh, 5h, Slous Hseee 1841. in. in. in. in. in. July 29-092 29-118 29-121 29.114 29-111 | August 29-200 29-167 29-152 29-167 29-171 September 29-133 29-108 29-084. 29-075 29-100 October 29-099 29-129 29-094 29-106 29-107 November 29-226 29-281 29-218 29-209 29-233 1842. January 29-402 29-417 29-368 29-369 29-389 February 29-374. 29-390 29-377 29-417 29-389 March 29-278 29-261 29-237 29-218 29-248 April 29-750 29-717 29-651 29-628 29-686 May 29-339 29.314 29-254 29.263 29-292 June 29-435 29-409 29-399 29-376 29-405 July 29-311 29-288 29.261 29-254 29-278 August 29-303 29-285 29-288 29-273 29-287 September 29-316 29.297 29-254 29-250 29-279 October 29.453 29-446 29-433 29-410 29-435 November 29.217 29-224 29-214 29-215 29-217 December 29-338 29-370 29-372 29-395 29-369 The greatest mean pressure of the dry air occurs in April 1842, the least in September 1841; the range being 0-586, nearly the same as for the moist air. TABLE VI.—Mean Height of the Barometer minus the Pressure of Aqueous Vapour, for periods of Three Months, for the Summer and Winter Months of 1842, and for the Year 1842. ‘ Mean of the h Period. : : an. i Four Hours. 1841. in. in. in. in. in. July, Aug., Sept. 29-119 29-119 29-128 October, November 29-156 29-157 29-170 1842. Jan., Feb., March 29-327 29-335 29-342 April, May, June 29-435 29-422 29-461 July, Aug., Sept. 29.268 29.259 29.282 Oct., Nov., Dee. 29-340 29-340 29-341 Jan., Feb., March, Oct., Nov., Dec. } 29-333 29-337 29-341 April, May, June, \ 29-351 29-340 29-371 July, Aug., Sept. The Year. 29-342 29-339 29-356 A maximum in the pressure of the dry air occurs in the winter about 235, and in the summer nearer 20% than 23°. A minimum occurs in the winter between 2" and 54, and in the summer near 5” ? The pressure of moist air, Table II., shews the same periods of maxima and minima. The mean pressure of the dry air in summer differs much less from that in winter than in the case of moist air. ABSTRACTS FOR THE THERMOMETERS. 161 TABLE VII.—Containing the Monthly Means for the Dry and Wet Bulb Thermometers, at the Hours 20, 23, 2, and 6. Dry Bulb Thermometer. Wet Bulb Thermometer. Mean of 23%, 2h, 5h 20% and 23h, 1841. © 6 a July . : 58-8 58-6 54:5 August . : 60-7 60-5 56-4 September . : 58-4 57-7 53-2 October : : 47-1 45-9 43-6 November : . 38-5 35-5 1842. January : . 34-2 February : . . . 38-7 March . . . . 41-5 April : - . A 44-7 June : . : 57-6 July : . . 56:8 August . : . : 60-1 September : . . : 53-8 October . : ; 43-7 November . . 39-2 December : 45-6 The mean of 20" and 23” for the dry bulb thermometer is given as an approximate mean temperature for the month. The means for the wet bulb in the month of May 1842 are not strictly comparable with those for the dry bulb in the same month, as the readings of the wet bulb for a considerable period in May have been rejected. See note, page 84. TABLE VIII.—Containing the Monthly Means, &c., for the Maximum and Minimum Self-Registering Thermometers. 2 Maximum of the Minimum of the Mean of the Daily Mean Month. Month. ; Month. Daily ||} —_______]] Mean. ae aed Maxima. | Minima. Poca eee Day. ieee Day. aaa 1841 A 5 : 5 é é é 5 July 62-3 48-7 55:5 13-6 19 69-7 16 4.2.2 55-9 27-5 August 62:8 47-7 59-2 15-1 20 71-5 12 37-3 54-4 34-2 September 61-0 47-3 54-1 13-7 12 75:6 5 35-1 55:3 40-5 October 49-8 38-5 44-1 11-3 13 55-9 21 30-0 42-9 25-9 November 42-3 30-6 36-4 11-7 8 53-7 17/ 14-6 34-1 39-1 1842. January 37-0 27-6 32-3 9-4. 19 43-6 23 18-4 31-0 25-2 February 44.2 33:1 38-6 11-1 11 50-0 6 22-1 36-0 27-9 March 47-9 34:8 41-3 13-1 24 53-9 8 30-0 42.9 25-9 April 55-9 33-3 44-6 22-6 21 66-8 8 Difises 47-0 39-6 May 61-4 41-8 51-6 19-6 | 13 66-9 2 28-8 47-8 38-1 June 66:9 46-8 56:8 20-1 |) 13 80-8 2 36-4 58-6 44.4 July 65-1 47-4 56-2 7a ee |) 78s 6 38-4 58-2 39-7 August 68-6 51-2 59-9 17-4 18 82-3 24 36:7 59-5 45-6 September 61-8 47-3 54:5 14-5 14, 15 70-6 20 36-5 53-5 34-1 October 51-2 37:6 44.4 13-6 11 62-6 19 24.2 43-4 38-4 November 44-6 34-8 39-7 9-8 ] 57:6 14 21-3 39.4. 36:3 December 49-5 40-2 44-8 9-3 30 58:5 31 28-4 43-4 30-1 The maximum and minimum in the five months of 1841. are 75°-6 in September, and 14°°6 in November, the range being 61°-0. In the corresponding five months of 1842, they are 82°:3 in August, and 21°-3 in Novem- ber, the range also being 61°-0, MAG. AND MET. OBS. VOL. I. 28 162 ABSTRACTS FOR THE THERMOMETERS. TABLE IX.—Means of the Maxima and Minima of Temperature for periods of Three Months, &c. Mean of Daily Mean of Monthly Periods. i Max. and 7 Max. and Min. Min. Max. Min. Min. 1841. ° ° © July, Aug., Sept. 54:9 72.3 ; 55-2 Oct., Nov. 40-2 54-8 ‘ 38-5 1842. Jan., Feb., March 37-4 49.8 : 36-6 April, May, June 51-0 71-5 . 51-1 July, Aug., Sept. 56-9 77-0 . 57-1 Oct., Nov., Dec. 42.9 59-6 . 42-1 The Year 47-1 64:5 . 46-7 The mean of the monthly maxima and minima for the third quarter of 1841, and for the second and third quarters of 1842, is 0°2 greater than the mean of all the daily maxima and minima for the same periods. The mean of the monthly maxima and minima in the first and last quarters of 1842, is in each case 0°-8 less than the mean of all the daily maxima and minima for the same periods. The mean of the maximum and minimum in each month of 1842 is 0°.4 less than the mean of all the daily maxima and minima in 1842. TABLE X.—Monthly Means of the Pressure of Aqueous Vapour. Mean of the fonth. : : e c “_ Four Hours. 1841. in. in. in. in. in. July : “ . 0-357 August . : . . +394 September . . . . 381 October : . . . -265 November : : . . +220 1842. January : . : . -196 February . . . : +222 March . : . . :237 April . . . . -260 May 5 : P : 333 June . . . . -360 July . . . . 387 August . . : . 434 September . . . : -370 October : : : : -247 November . : . : +231 December In forming the above Table, only those observations of the dry bulb thermometer were used which had cor- responding observations of the wet bulb. In the computations, Dr Apjohn’s formula was used approximately, viz., f’=/’— ; 96 being substituted 88°? for 88 for temperatures below 32°. The values of f’ were taken from the Table page xi. Introduction to the Greenwich Meteorological Observations for 1842. ABSTRACTS FOR THE AQUEOUS VAPOUR. 163 TABLE XI.—Means of the Pressure of Aqueous Vapour for periods of Three Months, for the Summer and Winter Months 1842, and for the Year 1842. Period. 5 5 . é Mean of the Four Hours. 1841. July, Aug., Sept. Oct., Nov. 1842. Jan., Feb., March April, May, June July, Aug., Sept. Oct., Nov., Dec. Jan., Feb., March, Oct., Nov., Dec. April, May, June, July, Aug., Sept. } The Year The maximum pressure occurs between 2" and 5%, and it is greater in summer than in winter. TABLE XII.—Monthly Means of the Relative Humidity, or of the ratio Erossue, Of, Aqueous Wapour for the Pressure at Saturation Observation Hours, 20, 23, 2, and 5. Mean of the Four Hours. September October November 1842. January ' February March April May June July August September October November December 164 ABSTRACTS FOR Humipity, WIND, AND CLOUDS. TABLE XIII.—Mean Relative Humidity for periods of Three Months, for the Summer and Winter Months 1842, and for the Year 1842. Periods. 1841. July, Aug., Sept. October, November 1842. Jan., Feb., March April, May, June July, Aug., Sept. Oct., Nov., Dec. Jan., Feb., March, } Oct., Nov., Dec. April, May, June, July, Aug., Sept. \ The Year. The humidity is least about 2" in winter, and between 2 and 5" in summer ; and is less in summer than in winter. TABLE XIV.—Force of Wind at the Observation Hours, and Maximum Force between the Observation Hours. Month. 204, May June July August September October November December Means The force of wind was estimated from May till the 21st of October, afterwards the pressures are from the Anemometer. The quantities from the Anemometer are lbs. pressure on the square foot of surface ; the estima-_ tions have nearly the same value. A maximum seems to occur about 2%. TABLE XV.—Mean quantity of Clouds from May till December 1842 at the Observation Hours. Month. May June July August September October November December Means A maximum in the quantity of clouds seems to occur about 23" in the months of June, July, August, and September, and a minimum about the same hour in the other months. hours are almost exactly those for the month of December. 55 and 204, | 20% and 23". } 235 and 2h, |2h and 5h, Ibs. 5h, Ibs. Ibs. lbs. 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AND MET, OBS. VOL. I. = ean? a, * 1 ee A me lem gm sae OBSERVATIONS MAGNETISM AND METEOROLOGY, MADE AT MAKERSTOUN IN SCOTLAND, IN THE OBSERVATORY OF GENERAL SIR THOMAS MAKDOUGALL BRISBANE, BART., G.C.B., G.C.H., D.C.L., LL.D., F.R.S., F.R.A.S., H.M.R.I.A., PRESIDENT OF THE ROYAL SOCIETY OF EDINBURGH, AND CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE, In 1843. DISCUSSED AND EDITED BY JOHN ALLAN BROODN, Esa., DIRECTOR OF THE OBSERVATORY. EDINBURGH: PRINTED BY NEILL AND COMPANY. MDCCCXLVII. Ln a ate i ay! a hese eS a's rity 's w 7 - i ‘ Gig) An Le, cay ‘Son it peti Lia Sneak AsO f AS “5 8 ALN) (A a do Nes TAT wt ML wagtegin iy ase ohh SEVERNA 70 BTUTITA Sav Ww ut uRi patter ? J 4 } ite hh, } ] + =~ ’ ~ , { 5 ‘i 5 nd rN tt ij a r “ety tre tis is Pras 20 VT ORE IL ARO 2 Piet RY Pe Ye Fa ‘4 = 4 ; . RO : " SYR ANMOOU Gite 2 ee PPyviaee ) ah % rp oF. , Vas % FT hiiw . ‘j CONTENTS. PAGE IntTRopucTION— Position and Description of the Observatory, Rsrrahocateerctodele sais nie civiaha/storwaayepstuyorche\eia'vistetaepinyereintaredel eis ieiie's 1x System of Observation and Personal Establishment, -.--.---..--...s.0esseeeeeeeeeseeee seen xi Maeneticat [nstRUMENTS— Declinometer— Description of the Declinometer, «..++-+:+:1::::seescsseneeeeenesneeeceneeeeeenna eee ree ens xii Values of the Scale Divisions, mmraleis ajeietaewieteleialotetalatera ataveietaletetehara:siataiers evalelaveiealate, situ suchas tans esaynaetels Xill Scale Reading for the Magnetic Axis,.---.-------.s10sssscectececreccteersscessenterees Xv Correction for the effects of the Bifilar and Balance Magnets, ----..--.-2+:--+2+++5 Xvi Correction for the effect of the Copper Ring or Damper, -------+--2++-+see.-+see ee xvii Correction for the Non-Parallelism of the faces of the Plates of Glass in the Box, Xvili Correction for the Torsion Force of the Suspension Thread, ---.--..+.2++-:+..++- XVili Facts relating to the Suspension Threads, «..------.::.sesseseeseesseeeneneeneeer eee nees xix INC CLE TGA le SOURCE SHO tad esters OMe aletere ts teleletetals ernie lnicrniele x/alalelsaloje/stelejatele) sais stelolelatsteieicieters eie/eisiste s\elatelelei=i= XX Adopted Scale Zeros--++++-+.:+-ssseseessceseceeeesssseeeensssceseceaseeseceesessessseseeess Xxi Time of Vibration of the Declination Magnet -........---.-2:++1ss-sseeesneeeeeeeeenee Xxi Absolute Magnetic Declination --.2.-.:+:+sssssesessee cee teneee ene eeeeeennerenas reas cocnad XXil Unifilar Magnetometer and Observations of the Absolute Horizontal Intensity of the Earth’s Magnetism— Position and Description of the Instrument, ...-.-.--.-.+..ceeseeeeeeseeeeeee cesta eens xxiii Mode of Observation and Reduction, -------..-+1-2.sceseresecenceeceeveecevessscenneacs XXIV Observations of Absolute Horizontal Intensity, -.-..........:.sseceeesereeeneeeee ee ees XXvl Bifilar or Horizontal Force Magnetometer— Description of the Instrument, .-.--.:-.::.s:esse-ceeetee cee eree ences ence rene {SOC AGGEOACG Xxix Adjustments and Values of Constants, ----------.-c--ceccnccsscssesessnccrencecesenens XXxi Constants for Reduction after altering the Reading of the Torsion Circle,....-. XXXiil Corrections for the effects of the Declination and Balance Magnets, -------.---- XXXivV Time of Vibration of the Bifilar Magnet, -..-.---..--0:.:esceccseeeeceeeceeee eee eeeees XXXIV Win donorpO sete OL ss: oe oseenscn settee ek saan tielcded lc caceceo-+suanndesucecchecestens xxxiv Temperature of the Magnet,.....-.-...ccseeeseeeesseeecenneeeeenseceecesensens PARR arbrity XXXIV Balance or Vertical Force Magnetometer— Description and Theory of the PMSHUMTETIb,) So 6. -oe de eeee ces cemcnnechacwetiaacnssaae XXXV Practical difficulties in Dr Luoyp’s method of determining the Constants,---.. XXXVi New method of determining the Constants (Note), ----+++--:+ss:sseceseeeeeee essen eee XXXVi Another method (that used in this volume) of determining the Constants, ---- xxxvii Values of Constants and Adjustments, ----++-++-01:+sseeetes sence eceneneneeseeeeeeenes XXXVIil Time of Vibration of the Balance Needle, ---......+.-..+-.ssceccesssacaceessscnscecess XXXVill iv CONTENTS. Determination of the Temperature Coefficients of the Magnets— Temperature Coefficient of the Deflection Magnet.----+--+--.+++ssssseeeeeee eee een eee xlii Temperature Coefficient of the Balance Magnet, ----+-+-+++++sseresreeeseceneeeneeeee xliii Temperature Coefficient of the Bifilar Magnet, atstaYolnistnlajatatstolstistat ste sTeisiste/e\aiatate) s(etetaleteis lalate 1 Inclinometer— Description (Serie Jbreinnreoiverthy Goonoecooonnaogonanas oor shoe dc occgsosan see ses0e0 arene lili Facts relating to Observations,++++--s:esersee cet er eee cents ence eeecnaerssesersaseertareaee liv MeteoroLocicaL InstRuMENTS— Barometer— Description of the Instrument, --2----.0---0000-----0-1-2cme-c2ne~sienseeureuaeraeoseenaeee lv Corrections applied to the Observations, blots ieiclele e610 vietaiaie/aletets slelelwistn|p's/alcteletwtet=[alelafuieis inte total aterela lv Thermometers— Description and Position of the Dry and Wet Bulb Thermometers, ----.--.----. lvi Position of Maximum and Minimum Register Thermometers,---------+--+++++++++ lvii Corrections for Thermometers «+: ++-essscessseneser cence ceetee ese ttrenereseeseeeceseseres lvii Rain-Gauges— Description and Positions of the Rain-Gauges, --+++---.++++seseeeeenee eee ereseeeneeee lviii Anemometer — Position and Description of the Anemometer, --+-++++++++++++++eee+ereeereeevererees Miii Mode of Observation, wie ojaym a wiefw’n ure hain (v/n (nj (avn,talsTormto lula Were ule lejalsiolwne aisisvele.elp s]=/0)xinjainiaininialuloie’srn(eteisnee i oiniale lx STATE OF THE Sky— Mode of estimating the Surface and Motions of Clouds, -----+++++--++++s+sessereeeeeeeee Ix Crock, Stove, anD Computinc Room— Mean Time Clock, «--+-+se+-.sceceeeceeeeenscceteecesseneecesncecnssenssecsenseceecenesesenese nes lx Stove and Computing ROOM, --eeeeesceee eee ceeee sees teeees cee eeeceeeeeneceeceensssneeeseeaee lx DESCRIPTION OF THE TABLES OF OBSERVATIONS— Description of Tables containing the Daily Observations of Magnetometers,----.---- lxi Description of Tables containing the Term-Day Observations of Magnetometers,.-- xii Description of Tables containing the Extra Observations of Magnetometers, ------- lxii Description of Tables containing the Daily Meteorological Observations, ------------ lxii Description of Tables containing the Term-Day and Extra Meteorological Obser- VALIONS, cre cee eeeeeereecee eee nee cee center cence ees seeneeeeeeteteseeeeteeer center eessrreeeeasees Ixiii Reference to Tables of Abstracts, ----- Bre elcteloyelatelay ioteleheletaiete ate) slsietsiaielalstayetelsfereteiajeteteitesietsis ates isered lxiv Account of the method adopted in Projecting and Printing the Curves of Term- Day Observations, aa(ola(amaleeiotevarelnta siesta reiaretsiere Sala seleiofovslaJe/aieln sje's/oieioln ojaisie(aveleleinistelattneiaetetton te miele ndae lxiv GENERAL REMARKS— Reasons for the methods adopted in Reducing and Printing the Magnetical Obser- VALIONS, +s seeceeeee cence tse eet cnet tenes cen ceseeseatssceereracereseesenestseetectsenseaaseens lxiv PostscrIpPT— New method of determining the Value of the Scale Divisions of the Bifilar Mag- netometer in Parts of the whole Horizontal Force, «++-+++++-sseseesesesereserereees lxv Results of Experiments in which the new method was employed, «-:--+-+-+-++++++++++ Ixvi CONTENTS. Vv PAGE MAGNETICAL OBSERVATIONS— DAILy OBSERVATIONS OF MAGNETOMETERS, -+++estereseseestesee eee sce eee ereene tee ensresenseeseeeres il TrRM-DAY OBSERVATIONS OF MAGNETOMETERS, -++rersesessseeeseesrssscecceceeseccsenseneensesees 29 Extra OBSERVATIONS OF MAGNETOMETERS, +++ 0esesesstert eee eet ees ceeeencecerensenseeeneeeree serene 49 OBSERVATIONS OF MAGNETIC DID, -+----::sseeseeveeeeeeseeee nce eennre sas eceens eee ces tenses ens sensen nes 75 OBSERVATIONS OF ABSOLUTE HORIZONTAL INTENSITY, -++++eseeereseeteeesette eee nee eects ee eees 79 METEOROLOGICAL OBSERVATIONS— Daity METEOROLOGICAL OBSERVATIONS, --+ersesvereecseceresceneessee ene centen serene seater ceeneeeas 85 TerM-Day AND ExTRA METEOROLOGICAL OBSERVATIONS, -+++e+sseeeseeecee eens ee ceeeenseeeeere 199 ABSTRACTS OF THE RESULTS OF THE MAGNETICAL OBSERVATIONS, 219 ABSTRACTS FOR THE Macnetic DEcLINATION— Ammtal. Period, --+--+--++eeeseceeceeeee ener escen ese cent ences cesta eeetesseeaen sec senneeensteeaeens 991 Variations with reference to the Position of the Moon, ---++++++-+++-seeeseeeeeeeeeee nes 223 Secular Change, ----+++sssceeescee se rer eceetecee cence erences een eeer rs neeteeseeeeeeceeetetaae creas 994 Diurnal Variation, «+--+. -1:eeese ee cece ee eeeec eee nee eee n ee enesees ene ess est eeserecteeees peter eens 995 Ranges of the Variations with reference to the Sum,--+:-++-+.ssesseeeeeeeeseeeeeetee ences 229 Ranges of the Variations with reference to the Position of the Moon, ----------.+--- 229 HorizontaL Component oF Maenetic ForckE— Armual Period, -+++ssscsceserececcne etn eessereeeneence rns ceneecnsseeeeeneeceetentaceararsneeresaes 930 Variations with reference to the Position of the Moon, -------+++:++eeseeeee eee seeeeees 232 Secular Change,.-.------sesseeseeseseeecceceeer eee senteeneeerssesesees eee sensnssertaececeaeaesens 934 Diurnal Variation,------.2+--.0seeeeeeeeeeeee ees ence cnet ence ecneceteeecnesrsneetesessereceecases 935 Ranges of the Variations with reference to the Sun,---------+-+---sssssesereereeeee cee eee 236 Ranges of the Variations with reference to the Moon, ---------++-++++-seeeeeeereeee eee ees 238 VerTIcAL ComMPponENT oF Macnetic ForceE— Anmuial Period, «-------.+.-cescsscncscesceccersccecccaceccsceerensccsscceeercscrsecesscesersscneese 940 Variations with reference to the Position of the Moon, --:++++++-++sesseeceererteeeecees 241 Diurnal Variation, --.:-:-:.0eeeecseeee cence ene ce eee ceeesa cee caseen see eeeceetrssnescnneetseeee ees 9438 Secular Change, SCID aU GOD COnETEMOE TIS TEC een po ncnl neocon sandse Doc Cope tecpn oc geCOneoonr noc ceceorn 945 Ranges of the Monthly Means of the Diurnal Variation,.-.-..++++:0:::s:ssseseeeneeeeees 245 Diurnal Ranges with reference to the Position of the Moon, --+--+++essseseeeesee eee oe 247 Macnetic Dip— Secular Change, -:-+-+++0:.-sssssseceeceeesscscnseesseeereccenaeesenses serene eertencesseeeeseneres 947 Ammiuial Period, ----20+-0scceseesesee eee s ees encen ees tecececcnncecseceeseseasterecstsssesssasenersees 947 Diurnal Variation, Ce COSC TREOR DOT CHO CBr DOOR Ob BEITOn COD COCOA CEST O RCRD a ata CREE Mp arerinacicitr 2948 Ranges of the Monthly Means of the Diurnal Variation, ---+-++--.-++++.+ssesseeeeeeee 249 Variations with reference to the Position of the Moon, ---------++++++++s:e0sseeseee essen 250 Totrat Macnetic Force— Secular Change, Fel cade Sela cla eo lela n cidiatiate AG stainialecataeie eee wis, cliclercle'aio se wate siamo caetetsetial te see melee 951 Annual Period, Tete atctec eter rata Tera 6 o1e ia ai Bvs:aleveye a e/@arete ale laid cie'aiaie tie eleyerere Sale| atsietslovareiollere chee steiinete ot etercttttke ake 951 Diurnal Variation, Pete erate Vevere iste i fein shale va!ebeluie wale ave die viaisciuinvs die Gielelatalatsvaieta’e oi ere aratajanafelehenma totais esate mines 952 Ranges of the Monthly Means of the Diurnal Variation,..---.--+-.:+e1+s:ssseeneeeeneees 253 Variations with reference to the Position of the Moon, ----++:+:1+++:sssneeseenereseeeenes 253 v1 CONTENTS. PAGE EXTREME Positlons— During the Daily Observations ; with the Ranges, «+--.--+++.+sssseesereee se eneanecereee 254 During observed Disturbances ; with the Ranges,--+------+++++-sseeseeseressesseeeeseeeees 955 During Verm-Days; with the Ranges, -.-.:-e0-<-+++-ce-seesererctestentetrccen Opserver { W. Nov. 29. 1843. Two series of observations were made with one vernier. The readings in the following Table are the means of the readings by Mr WELsH and myself. TABLE 2.—Values of one of the Short Scale Divisions. First Series. 11. Second Series. 32, Scale Vernier B Scale aioeeccetes Value of | Scale otal et Scale Voce Value of | Division. Crater =) | Divisions POOL pone Division ney Division. cnn one Division. Division. 55 26 565 90 | 54 49 27-5 |0-74967 55 19 26-0 54 41 57-5 | 74950 55 11 56.0 54 34 27-5 | 74950 55 4 3.0 54 26 52-0 | 75267 54 56 55-5 54 19 23-5 | 75050 ° 54 11 28-0 54 3 58-5 53 56 30-0 53 48 55-0 53 41 32-5 53 26 31-0 53.19 2-5 53 11 35-0 53 4 3-5 1st series ; one division of the short scale of 300 divisions = 07504. 2d seties 1.2.5, SE A, 2.450 Se SA eee = 07486 The adopted value of one division of the short scale = 07500. * The differences in the partial results, it is believed, are not due to errors of graduation of the scale, as different comparisons give different results. If greater accuracy could be gained in the read- ings of the horizontal circle, it is obvious that the mean of the angle subtended by one or two hundred scale divisions ought not to be taken as the value of the angle subtended by one scale division. DECLINOMETER. XV 9. From the adopted values of the long and short scale divisions, the co-effi- cient for reducing divisions of the short scale to the same value as the divisions of the long scale, is ud = 1-115; the reciprocal = 0-897. 10. Determination of the scale readings at the magnetic axis of the declinome- ter magnet. For this purpose, the scale reading is first observed with the magnet in its usual position (direct), and next with the magnet inverted, the stirrup being made with prolonged sides to admit of this inversion. Simultaneous observations of the unifilar magnetometer are made in order to eliminate the changes of declination during the intervals. When these eliminations are performed, the mean of the reading with the magnet, direct and inverted, is the reading at the magnetic axis. Increasing readings (the magnet being direct), indicate decreasing westerly decli- nation. 1. Observations with the Long Scale. May 5. 1843. 1 inversal (the copper ring used) gives the zeroreading, 256:87 Coe 8 TIES 5 shidar 8c aes on Ager seaigeeaeoPobt sod nesboraec ac sechechacebe ney 257°30 MOO A S.C occa Nerceccteccererceneaestereasurelssan-aceecedeqotncennteseaceecaenoesnas ts 256°88 Oct. 16. 1844. In the following series the copper ring was not used. Tas_E 3.—Long Scale Reading at the Magnetic Axis of the Declination Magnet. Unifilar, minus : . Mean of each , : 129 Se. Div., Mcetnonie ven kueaci two direct, | Reading for Position of |Declinometer| Unifilar reduced to the and of each | Magnetic Magnet. Reading. Reading. Declinometer Direct Inverted two Axis. =a MINUS Ue plus u. inverted. Se. Div. Se. Diy. Se. Div. Se. Div. Sc. Div. Se. Div. Se. Div. Direct 269-67 129-75 + 0-84 268-83 Inverted 245-10 129-58 0-65 245-75 268-65 257-20 Direct 268-89 129-38 0-43 268-46 245-69 257-07 Inverted 245-30 129-30 0-33 245-63 268-53 257-08 Direct 269-67 129-95 1-06 268-61 245-62 257-11 Inverted 243-92 130-52 1-69 245-61 268-69 257-15 Direct 271-33 131-29 2-55 268-78 245-57 257-17 Inverted 242-19 132-00 3-34 245-53 268-72 257-12 Direct 272-22 132-19 3-56 268-66 245-66 257-16 Inverted 241-59 132-77 4-20 245-79 268-70 257-24 Direct 273-31 133-10 4:57 268-74 The mean reading of the long scale for the magnetic axis = 257-14. This determination has been adopted, as the varying position of the copper ring in the other series was apt to render the results uncertain. (See No. 12.) Xvl INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. The zero used for the observations 1841 and 1842=255-2 (Introduction, 1841-2, Table 4), was used till Jan. 13. 1843, after which the previous determination was taken, as it was conceived that some change might have occurred at that date in a slight adjustment of the appendages of the magnet, made for the purpose of balanc- ing it. 2. Observations with the Short Scale. TaBLE 4.—Short Scale Reading at the Magnetic Axis of the Declination Magnet. Unifilar, minus Declino- Uniflar | 220 Sc. Div., Declinometer Reading. | Mean of | Reading two direct for or Magnetic inverted. Axis. Position of Magnet. reduced to the Declinometer Direct Inverted MINUS Us plus u. meter Reading. Reading. ad. h. Se. Div. . Div. Se. Div. Se. Div. Sc. Div. July 31 3) Direct 148-91 . 142-49 Inverted | 147-16 . 154-58 Aug. 2 Direct 149.24 . 140-13 Inverted | 146-37 : 154-07 Direct 144-51 : 138-06 Inverted | 148-90 . 157-35 Direct 145-75 : 136-69 Direct 146-06 : 137-45 Inverted | 150-71 Direct 142-04 . 137-79 Direct 142-66 . 138-82 Inverted | 149-50 : Direct 145-78 . 139-73 Direct 157-15 . 141-18 Inverted | 136-95 Direct 157-38 . 141-31 Inverted | 137-51 . : Direct 155-88 . 140-69 The mean reading of the short scale for the magnetic axis = 147-11. Corrections to be applied to the Scale Readings at the Magnetic Awis of the Declina- tion Magnets, in order to obtain the zeros of the scales. 11. Correction for the effects of the bifilar and balance magnets on the read- ings of the declination magnet. | The effect of the bifilar magnet (by Table 5. of the Introduction to the Obser- vations for 1841 and 1842, north end west) = — 0-64 long scale divisions. Sept. 4. 1843, and Jan. 25. 1844. The balance magnet was removed for the purpose of determining its temperature co-efficient. Its effect (north end east) was found = + 0°79 and + 0-80 long scale divisions, on the respective occasions. - wa DECLINOMETER. Xvi The adopted effect of both magnets, and, therefore, the correction of the scale reading at the magnetic axis for the zero, = + 0:16 long scale divisions, or + 0°14 short scale divisions. 12. Correction for the effect of the copper ring or damper. In 1843 many series of observations were made in order to determine this cor- rection ; the reading of the declination magnet was observed with the copper ring in its place, and when removed from the box. The results were contradictory, being, for the effect of the copper ring, from — 1:82 to + 1:89 long scale divisions, and led to the belief that the effect was small, if anything: the differences in the results, it was presumed, were due to the currents of air generated in lifting and shutting the box, to the changes of declination occurring at the time, and to the greatly increasing arc of vibration when the ring was removed. In July 1843, after an extra declinometer was obtained (§ 4), the results were equally contradic- tory, the differences being attributed to aérial currents, as before. The result of the best observations being nearly zero, the ring was therefore allowed to remain. Oct. 7. 1844. Careful series of observations were made, every precaution was taken, with the aid of the double boxes, to prevent internal currents of air, and the position of the ring on the marble slab was marked, so that it occupied exactly the same place after each removal. It is conceived that it was owing to a failure in the latter precaution that many of the irregularities of the previous results were due. In the following series, each of the declinometer and unifilar readings is a mean of two or three series of comparative observations, the series being made at intervals of about ten minutes. TasiE 5.—Observations to determine the effect of the Copper Ring or Damper on the Long Scale Readings of the Declination Magnet. Unifilar reading, ; : minus 130 Se. Div., Means of two Copper Ring | Declinometer Peduiced to Declinometer | on and of two Effect of on or away. Reading. Meclinoneter MINUS UL ; away. Copper Ring, Se. Diy. c. Div. . Div. . Diy. Se. Div. 275-52 274-63 . : : — 1-55 271-16 . . 7: —1-95 271-63 . . : —1-71 267-45 : 6. : — 1-42 271-56 02 . : — 1-58 269-02 : . . — 1-66 270-62 . : 3d: — 1-86 269-72 . : . —1-91 273-38 . . . — 1-85 271-67 The mean of the partial results for the position of the ring during these obser- vations = — 1-7 long scale divisions. The position of the ring in this case, how- MAG. AND MET. OBS. 1843. e XVlil INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. ever, differed slightly from that which it was conceived the ring occupied previously , and it should be remarked that when any cause (such as elimination of the torsion of the suspension thread) rendered it necessary to remove the ring, it was replaced, by means of marks on the marble slab, very nearly in the same position. After the above series of observations, the ring was moved till its north end was 5° to the east, and its south end was 5° to the west of its usual position, when the effect of the ring was found = + 4:2 long scale divisions. Oct. 15. 1844. Observations were made with the ring in its usual position, and in the position occupied during the series of observations in Table 5, when the effect in the latter position, compared with that in the usual position, was found = — 0°8 long scale division, so that the effect of the copper ring in its usual position would = — 0'9 scale division. A single comparison with the ring in its usual position and away, gave the effect = — 1:4. 13. The adopted effect of the copper ring during 1843 = — 1-0 long scale division. As the effect of the ring varied with its position, if its position remained con- stant it would also vary with the changing declination. When the westerly declina- tion diminished, the negative effect of the copper ring would be increased, and vice versa ; but this variation would be inconsiderable for the ordinary diurnal changes. 14. Correction for the effect of the non-parallelism of the plates of glass in the declinometer boxes. The magnet being caused to rest on wooden blocks, the scale readings were observed with the glass in its usual position, reversed, and away, but no difference in the readings could be detected; the effect is therefore zero. 15. Correction for the torsion force of the suspension thread, and the prin- cipal facts relating to the latter. , The errors due to the torsion force of the suspension thread are produced, first, by the magnet moving out of the plane of detorsion ; secondly, by the variation of this plane (due generally to the varying humidity of the atmosphere).* The error due to the former, even in the most marked case, is less than the probable error of observations, and it is altogether inappreciable compared with the error due to the second. If the plane of detorsion be that of the magnetic meridian, and the magnet be deflected through the are u by turning the arms of the torsion circle w, the torsion is w—w, and the ratio u torsion force for an are = radius ae hy w—u earth’s mag. force x mag. moment of the bar F * This source of error was removed to a considerable extent in January 1844, by placing a thick cotton cover over the whole declinometer. + The symbols used in the “ Report of the Committee of Physics and Meteorology of the Royal Society,’ and by Dr H. Luoyp, are generally adopted in this volume. DECLINOMETER. X1K is the quantity by which the deviations of the magnet from the plane of detorsion should be multiplied, to obtain the decrements due to torsion. If mn be the observed deviation, at —— a) n = the true deviation. Following are the observations for the value vee F> No use has been made of them for this correction. Jan. 134 25,1843. Arc-!w = { Sipe: are"! w= ee ; mean value of = =0:00154. peas f° 2"; bat Are“! w = { nae ares! w= aah ; mean value of =0:00147. 16. The second and most important error due to the torsion force is that pro- duced by the varying plane of detorsion. Unless when the period and extent of change is known, it can only be corrected practically. This is done occasionally in the following manner :—The magnet being removed, a brass bar of nearly the same dimensions and weight being suspended, and the box being completely closed, the extremities of the arc of vibration are observed through the glazed lid. The marble slab beneath having radii drawn for every 5° on each side of the magnetic meridian, the position of rest being estimated, its deviation from the magnetic meridian is known, and the arms of the torsion circle are turned an equal amount in the oppo- site direction. Much care and time were bestowed on these observations, the ex- tremities of at least two vibrations being observed, so that the torsion might be as completely eliminated as possible. Some annoyance was experienced by the break- ing of the suspension thread, which was formed of 20 fibres of untwisted silk. The necessity of removing the magnet for the purpose of eliminating the torsion, was, it is believed, occasionally a source of it, owing to the difficulty of holding the thread with a force exactly equal to the weight of the magnet till the suspension of the brass bar, and the consequent liability to ‘str ain, or by loosening, to alter the dispo- sition of the fibres ; but much graver errors would have been pimedneed by leaving the magnet hall untouched. 17. The principal facts relating to the suspension ed Jan. 27 21". 1843. The plane of detorsion was found + 26° from the magnetic meridian (reckoning deviations to the east of the magnetic north positive). This change, since December 20. 1842, it is probable, was produced in taking out the magnet and inserting the brass bar, as it was found that a fibre of the suspension thread was then broken ; another fibre was probably broken on again inserting the magnet, as on Jan. 6. 1843, the error of the plane of detorsion was found + 30°; the broken fibres were withdrawn on Jan. 13, and the torsion eliminated. May 264 3". Two fibres of the suspension thread were found broken ; the tor- sion was eliminated. June 16° 2". Three fibres of the suspension thread were found broken ; all the broken fibres were removed from the thread, and the torsion was eliminated. XX INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. June 224 98 5™, About the termination of the term observations it was dis- covered that three fibres of the suspension thread were broken ; when the box covers were removed, the stirrup of the magnet was found resting on the copper ring. The observations for some time before this was noticed were found valueless ; and it is probable that they were affected by a varying torsion force throughout the day. June 224 22". While taking out the magnet and suspending the brass bar, the suspension thread broke fibre by fibre. A new suspension thread was prepared a week ago in the following manner :—A quantity of the compound silk fibre, about 23 times the length of the desired suspension thread, was run several times from one extremity to the other, between the thumb and index, until almost all the twist which the fibres receive.in reeling was removed ;* the fibre was then wound side by side round two pins, placed at the required distance in such a manner that no twist was introduced in the winding; a weight was then suspended by the lower ex- tremity of the loop thus formed, so as to allow the fibres to take the same length, the torsion was so small that the weight did not revolve above 180°. After hang- ing thus for a week, the thread was to-day placed in the declinometer, great care being taken in pegging the extremity, and in winding up to keep the fibres in their respective positions ; this thread was not tied throughout its length, as in the pre- vious case several of the breaks were observed to occur at one of the lower ties. June 29. It was found that several trials gave different positions for the plane of detorsion. June 294 23". The plane of detorsion was found to have varied — 74°; this was eliminated. The brass bar was then lifted two or three times, so as to loosen the fibres, after which the error of the plane of detorsion was found — 26°; this was also eliminated, and the bar again lifted, when another trial gave the error of the plane of detorsion— 203°. After elimination the magnet was inserted. 3043". The magnet being removed, and the brass bar inserted, the error of the plane of detor- sion was found + 544°, which was eliminated. It was quite evident that the fibres BY) took different relative positions too easily, so that, in exchanging the brass bar for the magnet, or vice versa, considerable torsion might be introduced. At 304 7%, the thread was removed from the declinometer, and suspended on a pin, with the brass bar attached. When the latter came to rest, the thread was tied firmly (but not too tightly) at half-a-dozen places throughout its length with pieces of cotton thread ; the suspension thread was then replaced in the instrument, and, after careful wind- ing up, the torsion was eliminated. This thread, composed of 22 fibres, has an- swered well, improving as it got older. The greater changes of the plane of detor- sion will be found generally connected with some cause stated in the notes to the Daily Observations of Magnetometers. 18. Accidental sources of error. * The fibre is termed untwisted silk ; it is not, however, free of twist, as a slight examination will shew. DECLINOMETER. Xxi March 29. 1843. A small magnet, intended to be placed in the brass bar to facilitate the determination of the plane of detorsion, but which was never used, was found in the writing-desk ; the latter occupied a position to the east of the reading telescope of the declinometer, except on term-days, when, for convenience, it was moved to a position nearly midway between the declination and balance mag- netometers. In the usual position of the desk, the greatest effect of the small mag- net, on the reading of the declination magnet, might be from — 02 to + 02; and during term-days from + 1’"1 to— 11. It is probable that the magnet remained in the same position in the desk, and, therefore, the effect would be constant for each position of the desk. The large copper stove, occupying the position S in the plan, was removed early in 1844. Its effect was tried on the balance needle, by approaching and re- moving it, and was found to be nothing. 19. From Nos. (11) and (13) we find the following corrections to be applied to the scale readings at the magnetic axis of the declination magnet, in order to obtain the readings which shall be used as the zeros of the scales :— Reading of the long scale at the magnetic axis, . . . . . . 257-14 Correction for the effect of the bifilar and balance magnet (11), + 0:16 Correction for the effect of the copper ring or damper (13), — 1:00 Adopted zero for the long scale, . . . . . . =. 256°30 Reading of the short scale at the magnetic axis, . . . . . . 14711 Correction for the effect of the bifilar and balance magnet (11), + 0-14 Correction for the effect of the copper ring or damper (13), — 0:90 Adopted zero for the short scale. . . . . 2 «. 146:35 20. Time of vibration of the declination magnet with the long scale. The mean of 4 series of observations, given in the Introduction for 1841-2 (22), gives one vibration in 17°84. The following series were made in 1843 :— d= ch: 8. Feb. 28 0. 32 vibrations, the observations made at the extremities of the arcs, give a mean of 17-84 - SG COOUCOERONOD “Al ) erciteistalctictaictelcieietisvicie'decievsieiaisieieisinicivicinicieiciemieteiatetele’ts aN CL GILG ceeecereeececcereseerssetesceeses 17.84 March 1 Spo aistataatstenieteintalsteielsleteyaisleteiateraisteys sle(atslsieleiale eiaisiateislcteleeier= ERELEMINELG Shacie sielait/oclelsele a clatetstoetaleisioterelsleeletsiera 17-81 ericticiesisclesie sc SOM reat ncecvsseelcdcecuescbile stares cecrcocteebiccss TUGdLe sas cececeeccccceecencersesscsees 17.Q] April WTB, QD cccncdccesecconccvoncscennsccsisicercceseneenssisccie Goin alee) Hoo non ono Udo oon coneconoeDrononeae 17-93 The last series was not considered good; the mean of the first ten vibrations of the series gives 17°85. 21. The observations of the declinometer are made in the following manner :— The points of the scale which coincide with the vertical wire of the reading tele- MAG. AND MET. obs. 1843. ie EXH INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. scope are noted 18 seconds before the minute of observation, at the minute, and 18 seconds after the minute ; the scale readings at these periods being a, b, and c, a+2b+e ae aie 22. All the observations of declination in this volume are absolute. They are rendered so as follows :-— The middle wire of the theodolite telescope is brought to coincide with the ver- tical wire of the fixed reading telescope (7); the three verniers of the horizontal circle are then read ; the theodolite telescope is turned (on the vertical axis of the circle) until its middle wire coincides with the vertical line on the north meridian mark of Sir THomAs BrIsBANE’s (the western) transit in the Astronomical Obser- vatory, and the verniers are again read. In order to obtain the reading of the horizontal circle for the astronomical meridian, the theodolite telescope was placed as nearly as possible in the meridian, and being accurately levelled, the time of the sun’s transit was observed by the Magnetic Observatory clock. The sun’s meridian passage was also observed by Sir THOMAS BRISBANE with his western transit in the Astronomical Observatory, and the clocks in the two observatories beimg immediately compared, the true time of transit by the clock in the Magnetic Observatory was obtained. The difference, if any, between the true and observed times, was due to error of azimuth; the latter, being very small, was obtained from the former in multiplying by the factor, the mean is deduced by the formula cosine sun’s declination cosine sun’s altitude 23. If A’ be the difference of the horizontal circle readings for the fixed tele- scope and for the north mark, Z be the azimuth of the north mark, and D be the angle at any instant contained by the line of collimation of the reading telescope and the adopted zero scale reading, the true westerly declination at that time will be 180°— A’+Z=+D. The values of 180° — A’=A, obtained in 1843, are given in the following Table :— UNIFILAR MAGNETOMETER. XXlll TaBLE 6.—Determinations of the Value of Angle A. Readings of Horizontal Circle For Declination Telescope. For North Mark. Verniers. Verniers. The mean value of angle A=23° 50’ 84. The value of angle Z, by the observations, Table 8, Introduction 1841-2, = 1° 37’ 38"8. Whence A + Z = 25° 27’ 47-2 = 25° 27'-79 (25° 27'-75 was used), which is the absolute westerly declination corresponding to the long scale reading (as corrected, No. 19.), 256-30, and to the short scale reading (as corrected, No. 19.) 146°35. For other scale readings, differing from these zeros by the angular quantity + D, the declination is obtained as indicated above. Tables have been formed from the above, and the known angular values of the scale divisions (8.), by means of which the scale readings observed are at once converted into the absolute westerly declination. § 4. UnirILaR MAGNETOMETER AND OBSERVATIONS OF THE ABSOLUTE HORIZONTAL INTENSITY OF THE EARTH’S MAGNETISM. 24. In the beginning of April 1843 two small wooden houses were erected about 19 yards to the north of the Magnetic Observatory ; the larger of the houses contains the unifilar magnetometer and the dip circle, and the smaller, which is 10 feet to SSE. of the larger, contains a reading telescope for the magnetometer. The instru- ments were in their positions in June, and the first observation of the absolute hori- zontal intensity was made in August. 25. The unifilar magnetometer rests on a strongly braced wooden stand, which is fixed by copper battens and plaster of paris to a stone slab, resting on a stone XXIV INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. foundation separated from the floor; the top block of the stand, a solid piece of mahogany, carries a vertical box enclosing the suspension thread and supporting the torsion circle, this box is open on two opposite sides near the stand top; a hori- zontal box slides on the vertical one, and when close to the stand top the magnet is completely enclosed; an internal box was afterwards added, and all the precautions already indicated (6.) for the declinometer were taken. The magnet used when observations of absolute horizontal intensity were made was that usually in the declinometer, a spare magnet being fitted with a short scale (8.) was substituted for it; the telescope (that intended for a collimator to the bifilar) was placed in the smaller wooden house, on a stand in all respects similar to that for the unifilar : the two houses were connected, during observations, in the line of collimation of the telescope and magnet by a wooden tube blackened within. A beam of straight well seasoned fir, 11 feet long, 32 inches broad, and 1? inches thick, was placed on each side (outside) of the larger wooden house, in the line passing through the centre of the suspended magnet, and at right angles to the magnetic meridian ; each beam was let into the tops of two strongly braced wooden trestles, 7 feet apart, which rested on wooden posts driven into the ground, and which were fixed to the latter by catch pins, allowing a slight adjustment for the distance of the beams from the magnet; the trestles and beams being removed after each observation. The beams were carefully divided with the aid of a brass standard yard made by Messrs TROUGHTON and Simms; the graduations were adjusted to their distance from the suspended magnet in the following manner :—a well seasoned fir rod, shod with brass at one extremity, and terminated at the other by a capstan-headed screw, by which the rod was accurately adjusted to a length of six feet, was passed through holes in the sides of the wooden house and unifilar box ; the middle of the rod coin- ciding with the suspension thread, the catch pins of the trestles were then loosened or forced in till the extremities of the six feet rod coincided accurately with the divi- sion 3 feet on each beam. The deflecting magnet was adjusted to the graduations on the beams with the aid of a lens; in 1844 the graduations were marked on brass pin heads placed in the beams. The fixidity of the trestles was verified in general after each observation, and the accuracy of the graduations on the beams was veri- fied usually before each observation. 26. The value of the absolute horizontal intensity is determined from the ob- servations as follows :—if + be the distance at which the centre of the deflecting magnet is placed on the wooden beam (in the direction of the central line of the beams), and wu be the corresponding angle through which the suspended magnet is deflected, then where m is the magnetic moment of the deflecting bar, X the absolute horizontal — UNIFILAR MAGNETOMETER. XXV intensity in terms of the units used, and p’ and q’ quantities depending on the mode of distribution of niagnetism in the magnets. The term tan w is obtained from the formula ie tan get teat) | { Tis =) [1+ 04) 4% (0,~500) | 4 where wu, and ,u are the observed mean readings of the unifilar magnetometer, the deflecting bar, with its north pole towards the east, being at the distance r to the east and west respectively of the suspended magnet; similarly, wu, and ,w are the readings when the deflecting bar, at the distance 7, has its north pole towards the west ; d,, .d, &c. are the simultaneous readings of the declinometer corresponding to u,, ,u, &e.; f=1:115 is the co-efficient for reducing the scale values of the decli- nometer to those of the unifilar; @ is the angular value of one scale division vf the unifilar ; (1 ay =) =1-00212 is the torsion factor ; g=0-000288 the temperature co- efficient for the deflecting bar (60.); é and ¢, its temperature at deflection for the distance 7 and for vibration, respectively ; & the co-efficient for reducing the scale divisions of the bifilar magnetometer to parts of horizontal force ; 6, the bifilar mag- netometer mean scale reading during deflection at the distance r. 27. The comparative observations for w and d were rendered simultaneous, thus : The times of vibration of the unifilar and declination magnet being nearly the same, the time at which the unifilar magnet attained one extremity of its arc of vibration was instantly indicated by me to Mr WELsu, who could observe my motions through one of the north windows of the Observatory. He immediately commenced counting the beats of the mean time clock, and at the end of the 18th second (the time of one vibration) both observers commenced making readings of the magnetometers ; those by Mr WELsH being made at the end of the 18th, 36th, 54th, Xc., seconds, and those by myself at the extremities of the arcs of vibration. From 7 to 12 con- secutive readings were made thus at every position of the deflecting bar, and from these the mean readings are deduced. In order to render the arcs of vibration of the unifilar as small as possible, the deflecting bar was at first moved gradually up to its nearest distance (5 feet) ; in placing it at the next distance, it was moved rapidly nearly half way, and 18 seconds counted, when it was immediately shifted to the other half. When the farthest distance was attained, it was placed vertically, and after 18 seconds, laid down in the reverse position ; it was then moved as before, by half-shifts, to its next position, and so up to the nearest. After comparative readings for that position, the magnet was again placed vertically, and carried to the beam on the opposite side of the suspended magnet; at the end of 36 seconds * The formula actually used was tan {a (w,+&c.)}, as it was considered more convenient and sufficiently exact for such small deflections, especially when the method of determining « was taken into consideration. (See note to No. 8.) MAG. AND MET. OBS. 1843. g XXV1 INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. it was laid down at the same distance, and with the north pole in the same direc- tion as before. In genéral, the vibrations were small, seldom above 10’; when larger, it was checked by slightly approaching or removing the deflecting bar at proper times, with reference to the directions in which the suspended magnet was moving. Mr WE ts# observed the bifilar magnetometer before and after each com- parison, and I observed the temperature of the deflecting bar after each comparison by means of a thermometer lying beside it.* 28. After the deflection observations, the deflecting bar was vibrated in the declinometer box ; it was suspended in a stirrup of silk of the same kind as that of the suspension thread, a small slip of paper was gummed to the extremity next the telescope, and the transits of the slip were observed. The following equation is then obtained :— 2 m X= wa {1+k (0-500) } a? +6? 12 of the magnet = 1:25 feet, b the breadth = 0-0719 feet, M the mass = 6216-7 grains. a, the ratio of the circumference to the diameter = 3:1416, T, the true time of Sc uncirs eee observation = T (a + oR 46 where K is the moment of inertia of the magnet = M, a being the length ) ; T’ being the observed time of one vibration, as already defined (15.) and determined from the value 0:001465 for the declina- tion magnet thus; the moments of the declination magnet and deflecting bar are as 1.000 0:001465 0-942’ 0:942 a anda’ are the semiarcs of vibration at the commencement and termination of the observations of vibration. The factor {1+ (b—500)} is the reduction of the value of X to the bifilar reading 500, 6 being the mean bifilar reading during vi- brations. The temperature of the bar during vibrations is observed, and the value of m is reduced to this temperature in the formula for deflections. 29. Observations of deflection were made on August 12 and 21, November 8 and 14, and on December 18. The observations on August 21 and November 8 were reduced by the method of least squares, the equations of condition having the form the value of 5 for the deflecting bar is therefore = = 0:0015562, Pg. ih m es 7? tan u ag * Tt was soon found that good observations could only be obtained on cloudy days, as the sun heated the building on cloudless days to such an extent as to produce internal aérial currents. On account of the manipulations with the deflecting bar being performed outside, rainy days would not do, and it was found desirable that the days should be calm ; independently, then, of the necessity for a magnetic calm, there was requisite for a good observation a day cloudy, dry, and calm. — —s UNIFILAR MAGNETOMETER. The following Table contains'the results of the equations for the different values of r. Aug. 21, 288977 5 p= —01325 ; g=—1-0574. Nov. 8, x= 290250 ; p= —0°1013 ; g= —2°8539. TasLE 7.—Results of the Equations of Condition. August 21. November 8. r. Results. Results. Feet. 5-00 +0-000002 —0-000051 5:25 + 0-000359 5:50 +0-000163 — 0-000275 6-00 — 0:000756 — 0:000495 6-50 — 0-000610 +0-000144 7-00 — 0:000091 + 0-001098 7-50 — 0:000556 — 0-000788 8-00 +0-002780 8-50 +0-000631 9-00 — 0:001908 9-50 — 0:000333 30. The mean of the above values of p and q were applied to the equations for August 12, November 14, and December 18 ;* on the first of these days deflections were made at three distances, and on the other two at four distances. The results of the equations are as follow : TaBLE 8.—Results of the Equations for August 12, November 14, and December 18. August 12. November 14. December 18. mm m x : XY 2:8701 2-8890 2:8662 2:8738 2-8677 2-8676 2-8688 2-8745 2:8928 2:8682 2-8762 * This method was recommended by Mr Atry (Proceedings of the Committee of Physics of the Royal Society, No. 1.) The results for Nov. 14 and Dec. 18, by the approximate formula (31.), shew to some extent how far it may be depended on. It should be remembered that the magnet was subjected to temperature experiments between Nov. 8th and 14th. XXVill INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. 31. The observations, November 14 and December 18, have also been com- puted by the approximate formula in which q is neglected and p’ eliminated, namely, . m vr, tan u,—9r tan uw XQ (r?—9) the results are as follow: Nov. 14. 1,=5-125 feet, r= 6-750 feet ; x = 2.8762 ed un cee 1, = 5-250 feet, r= 7-000 feet ; x = 2.8691 am Dec. 18. 7,=5-000 feet, r= 6.625 feet; x = 2.8444 ie ae 7, = 5-250 feet, r=7-000 feet ; x = 2.8795 “i 32. The following Table contains the values of = of m X obtained by the for- mula, No. 28, from the Observations, pages 83 and 84, and the consequent values of m and X, together with the weight of the final results deduced from the formula Number of partial results Mean of the squares of the partial results minus the square of the mean’ Weight = TABLE 9.—Results of the observations for the Absolute Horizontal Intensity, reduced to the Bifilar Magnetometer reading 500. Temperature of x Deflecting xa pa Magnet. fo} 69-6 2-8928 33-2505 9.8075 61-1 2-8898 33-4536 9-8322 43-3 2-9025 33-4698 9-8563 41-1 2-8682 33-1440 9-7501 46:3 2.8762 33-1695 9-7675 Results from the approximate formula. 41-1 2-8726 33-1440 9-7576 46-3 2-8619 33-1695 9-7431 — a = Giving the determinations of X, values corresponding to their weights, the re- sulting value is X = 3:39762 the bifilar magnetometer reading 500 scale divisions. BIFILAR OR HORIZONTAL FORCE MAGNETOMETER. XX1xX § 5. Brrinar or Horizontal Forck MAGNETOMETER. 33. This instrument was made by Gruss of Dublin, and is similar, in its gene- ral construction, to the declinometer. An inner box was applied on September 26, 1843 ; both boxes were gilt, externally and internally, and their joints covered with velvet. The magnet, whose dimensions are 15 inches, % inch and { inch, is placed in a stirrup, which carries below it a lens and glass scale connected by a tube; the glass scale has 280 divisions, and the graduation at the 300th division, and increas- ing readings indicate increasing force ; the axle of a grooved wheel fits into the sus- pension eyes of the stirrup, the whole being borne by a silver wire passing round the grooved wheel, and having its two extremities fixed to a suspension roller ; the roller is supported by the torsion circle, which also bears beneath the roller a mi- crometer-headed screw, right-handed where it meets one wire (or portion of the wire), and left-handed where it meets the other. The screw serves to render the distance of the wires at the top equal to the distance at the grooved wheel. A copper ring encircles the magnet in order to check the vibrations. A thermometer by Ross, with a bulb 0-5 inch in diameter, is inclosed in a glass tube, and is fitted into the lid of the magnetometer box, leaving the bulb below, and the stem and scale above. This thermometer was intended to give the temperature of the magnet, but it was evident (especially while the box was imperfectly closed) that the temperature of the bar and of the air might differ considerably. In order to avoid this source of error, I had a thermometer made by Messrs ADIE and Son, whose bulb rested in a cup, in a brass bar of the same dimensions as the magnet, and was covered loosely by a small brass cap. The following comparisons were made of the indications of the two thermometers, the box being in its original state, and the rise of the tem- perature considerable. From these comparisons, the necessity of some method which will give the temperature of the bar is at once obvious. As the thermometer by ADIE is only partially in contact with the metal, it may be considered more as an indication of the temperature of the surface than of the interior of the bar. MAG. AND MET. oss. 1843. h XxX INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. TABLE 10.—Comparisons of the Thermometers with the Bulb free, and with the Bulb in a brass bar. Géttingen Thermometer. leon too |) rnc, Ross. Adie. 30-7 31-0 31-5 33-0 37-6 41-0 43:0 44-0 44:5 44-9 45:0 44-9 44:3 KH OVTorA wore — ee TORS BO ~T Go oo — 34. In the adjustment of the instrument, the magnet is forced to a position at right angles to the magnetic meridian, by turning the arms of the torsion circle. As, in forcing the magnet from the meridian, the upper extremities of the wire will move through a greater angle than the lower extremities, the wires will be no longer vertical, and the magnet and appendages will be raised ; the forces producing equi- librium will, therefore, be the weight suspended endeavouring to attain the lowest point, and the horizontal component of the earth’s magnetic intensity acting on the free magnetism of the bar. 35. If vu be the excess of the angular motion of the arms of the torsion circle, or upper extremities of the wire, over u, that of the lower extremity or magnetic bar in moving the latter from the meridian, the equation of equilibrium will be 2 . a e m X sin u = W7 sin». m, X, W, a,.and J being respectively the magnetic moment of the bar, the hori- zontal component of the earth’s magnetic force, the weight suspended, the interval, and the length of the wires. The differential of this equation (w=90°) divided by it, gives aE aia cotv + ¢(Q + 2e — e’) xX n being the number of scale divisions from the zero, or scale reading when w=90", a the arc value in parts of radius of one scale division, ¢ the number of degrees Fahrenheit which the temperature of the magnet is above the adopted zero, Q the BIFILAR OR HorRIZONTAL FoRcE MAGNETOMETER. XXxX1 coefficient of the temperature correction for the varying magnetic moment of the bar or the value of “wn for 1° Fahr., e and e’ the coefficients of expansion for the brass of the grooved wheel and silver of the wires. 36. The observations in this volume are given in scale divisions, and are cor- q rected by the coefficient >> = q being the total temperature coefficient ; the abstracts are then obtained from the formula = = na cot v where n is the number of scale divisions corrected for temperature as above. 37. The following are the adjustments and values of the constants. The angular value of one scale division of the bifilar magnetometer = 1/1223 (See Table 10, Introduction, 1841-2); increasing readings indicate increasing force. The value of q, the total coefficient of the temperature correction, = 0-000247 (71.) 38. It having been suspected that the zero of the scale (the scale reading when u=90°) had altered in some way since last adjustment on Oct. 20. 1841 (Introduc- tion, 1841-2, p. xxviti.), the following observations were made April 274 2” 39". Bifilar scale reading 196-9. 2"44™. Bifilar scale reading 1966; the magnet was then removed carefully, and the equivalent brass weight substituted. The torsion circle was then turned from the reading vernier A 289° 10’ to A 358° 16’, or through 69° 6’, the previous value of v (Introduction, 1841-2, p- Xxviii.), when the scale should have read 150, instead of which it read 212-2. As it seemed possible that this difference might be due to pressure exerted on the wires in withdrawing the magnet and substituting the weight, the magnet was again in- serted in the stirrup, the weight being removed, and the torsion circle turned till it read A 289° 10’, when the scale read 297. It was therefore evident that the pre- vious difference might be due in some way to the manipulation it was necessary, however, to go through the adjustment anew. After several trials the scale reading was found to read the same whether the brass weight or magnet was suspended, when the torsion circle read A 87° 30’. The weight being suspended, the torsion circle was turned 90°, when it read A 357° 30’. The collimator was then turned by its independent motion till the scale read 200. The magnet being again suspended, the scale reading was found 200 when the tor- sion circle was turned 69° 45’, it then read A 287° 45’. April 284 0* 20™. As the zero of the scale, 200, was taken too high, the adjust- ment was again performed. Bifilar scale reading 200. The magnet being withdrawn, the brass weight sus- pended, and the arms of the torsion circle turned from A 287° 45’ to A 357° 30’, the scale reading was found 199, so that the wires had not been affected in the previous adjustment. The collimator was then turned till the scale read 148, this being the mean of several readings; the magnet was again suspended, and the torsion circle XXXil INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. turned through 69° 44’, reading A 287° 44’, the scale reading being 148. The westerly declination during adjustment was 25° 28’. November 84 21" 20™. The bifilar magnet was removed in order to determine its temperature correction ; the brass weight being substituted, the arms of the torsion circle were turned from A 287° 44’ to A 357° 30’, when the collimator scale read 157-5, or 9°5 scale divisions greater than on April 28, the westerly declination being 25° 20’. As it is necessary to determine the changes of horizontal force during the observations for the temperature correction, the magnet used for deflections in ob- servations of absolute horizontal intensity was substituted. The moment of this bar was found too great for grooved wheel No. 8, previously in use (Introduction, 1841-2. 30.), wheel No. 9 was substituted, whose diameter = 0-459 inch; as the diameter of wheel No. 8 = 0-409 inch, and the value of one division of the micro- meter-headed screw = 0:0005194 inch, the wires were rendered parallel by turning the micrometer head through 96 divisions. The brass weight being suspended, the scale reading was 128°5 The anaemia) 615057 ol. somnseps oacebenease meeereoete eae hearbentes 126-0 The weight being suspended, the arms of the torsion circle were turned through 90°, when it read, vernier A 178° 0’, B 358° 0’; the collimator was then turned by its independent motion till the scale reading was 143; the magnet was suspended, and the scale reading was found 142 when the arms of the torsion circle were turned through 55° 175, the circle reading A 122° 41-5, B 302° 43’. November 10° 6". The temperature experiments having been made, the de- flecting bar in the bifilar magnetometer was removed, and the arms of the torsion circle were turned from B 302° 43’ to B 358° nearly, when the scale reading was 143, as in the previous adjustment. Wheel No. 9 was removed, and No. 8 substituted, the micrometer head being turned backwards through 96 divisions. » The bifilar magnet being suspended, the scale reading was 93 The brass weights , esecncep ss. sr cesmes alten name ena 96 the arms of the torsion circle were turned through 90°, when the reading was B 358° 35’; the collimator was turned by its independent motion till the scale reading was 172-4, the magnet was inserted and the arms of the torsion circle turned through 68° 18’, when the torsion circle reading was B 290° 17’, and the scale reading 173°. The bifilar thermometer 42°:4, and the absolute westerly declination 25° 18’. 39. The following are the values of v, of k = a cot v, and of q’ Se with the periods to which they apply in 1843. BIFILAR OR HorRIZONTAL FoRCE MAGNETOMETER. XXX1l1 TABLE 11.—Values of v, k, and qg, in 1843. Periods to which the Values apply. a. oh. a. : Jan. 1 —April 27 0-0001248 April 28 2—Nov. 8 0-0001205 Nov. 9 0—WNov. 10 0-0002263 Nov. 10 8—Dec. 31 0-0001300 The values of k are given at the foot of each page of the magnetical observa- tions. 40. During considerable disturbances the collimator scale, which contains too small an angle, goes out of the field of the reading telescope, and it has been found necessary to turn the arms of the torsion circle until it again appears ; without this, it has happened that the greater part of a disturbance could not have been observed. As there was some doubt that turning the arms of the torsion circle after adjust- ment might affect the instrument injuriously, experiments were made in the end of 1842, during periods of slight change, which shewed, after turning the arms of the torsion circle a few degrees in either direction, that on recurring to the original value of v the scale readings were unaltered. 41. In turning the arms of the torsion circle the value of the scale divisions and the unit of force are changed, it is necessary therefore to reduce the observations to a common unit and zero; let 6 be the small angle through which the arms of the 2 torsion circle are turned, & =v + 6, mX=F, W = = G, (34.) The equation of equi- librium originally, « = 90°, is ie Cras g teh dual her rah sh oocyst : Koee at (Ls) for the new value of v, ~=90 + A w= 90 + Av where 4 v = the angular value of the scale reading at any instant from the zero reading gee ene a (a) cos Av Subtracting (1.) from (2.), and dividing by (1.), Ta) AF sin v — sin » cos v’ =—_ = : +—— Av F i sin v sin v If n be the number of scale divisions from the zero or scale reading for w= 90°, when v'=v+(; and N be the number of scale divisions corrected for temperature from the zero corresponding to the same force when @=0, then sin v’— sin v cos v’ a cos v COs v MAG. AND MET. OBS. 1843 a XXXIV INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. or adapting the first constant to logarithmic computation Qin nit 9 ( sa cos (v + 8) iF iayeanle iy Cates + "C08 0 Bibi, = A +n”B +t¢ @ is considered negative when v is diminished, n is negative when the reading is below the zero, and ¢ is the temperature of the magnet minus 26°. 42. It was necessary to turn the arms of the torsion circle once only in 1843, namely, on May 6* 10% 45™, when vernier B was turned from 287° 44’ to 291° 45’, whence B=—4° 1’, A=234-7 scale divisions, B=1:19, v being=69° 46’. May 6° 13" 45™, the arms of the torsion circle were turned from B 291° 45’ to B 287° 41’, as this was 3’ different from the original reading, 3 scale divisions were subtracted from the abstracts of the observations from April 28* 2" till May 64 10°, the two hourly and extra observations are, however, affected to that amount. 43. The effect of the balance needle upon the readings of the bifilar was deter- mined, September 4° 1843, to be —4:03 scale divisions ; no correction has been ap- plied ; the effect of the declination magnet is zero, and the effect of the copper ring or damper has not been determined, but it is supposed to be small. 44. Time of vibration of the bifilar magnet. s. Feb. 22. Mean of 38 vibrations, 1 vibration = 26-18 March 1. Mean of 28 vibrations, 1 vibration = 26:25 June 1. Mean of 27 vibrations, 1 vibration = 27:08 Oct. 25. Mean of 8 vibrations, 1 vibration = 26:99 Oct. 25. Another series, : : : 27:03 45. The natural arc of vibration is generally very small, and when considerable the time of vibration is found different from that determined by artificial vibrations (Introd. 1841-2, p. xxix), namely, about 25 seconds, which has been used in the observations. The observations are made as follows :—the point of the scale coin- ciding with the vertical wire of the fixed telescope is estimated to a tenth of a divi- sion at 25° before the minute of observation, at the minute, and 25° after it; the mean reading is deduced from the three readings by the formula ane > and c being the three readings. The mean thus obtained is corrected to the tempe- rature of 26° Fahr., this being below the lowest temperature which occurred within the Observatory in 1843 ; a constant quantity of 300-0 has been added to all the cor- rected means. ‘Tables were formed giving the temperature correction for every tenth of a degree above 26° from the formula (t—26) q’+300-0. 46. The temperature of the magnet was obtained till November 274 18" from the thermometer by Ross, after that time from the thermometer by Messrs ADIE BALANCE OR VERTICAL ForcE MAGNETOMETER. XXXV and Son resting on a brass bar. From September 26* till November 27* the tem- perature of the magnet was probably worse determined than at any other time, as the bulb of the thermometer by Ross was outside of the inner box, while the magnet was within it. December 144 1", the inner box was removed in order to compare the indications of the thermometers of Ross and ADIE; it was not replaced till January 10% 3" 1844. ¢ § 6. BALANCE OR VERTICAL ForcE MAGNETOMETER. 47. The balance magnetometer was made by RoBinson of London. It is com- posed of a needle 12 inches long, and about ? inch broad, with knife-edged axle resting on agate planes; at the extremities of the needle are brass rings, each carry- ing a cross of spider threads. The needle is placed horizontally at right angles to the magnetic meridian ; it is accurately adjusted by means of two fine brass screws ; one towards one extremity, working horizontally, balances the needle; the other, working vertically near the other extremity, regulates its sensibility. The appa- ratus is covered by a rectangular box, having glazed openings on two sides opposite the spider’s crosses ; those on one side allowing light to be thrown on the crosses from two small mirrors ; those on the other for viewing them and determining their position, which is done accurately by means of microscopes carrying micrometers. A thermometer within the box gives the temperature of the needle. 48. If m be the moment of free magnetism of the needle, Y the vertical com- ponent of the earth’s magnetic force, W the weight of the needle, g the distance from the centre of motion to the centre of gravity, € the angle contained by the line joining these two centres and the magnetic axis of the needle, the latter being hori- zontal, the equation of equilibrium is mY = Wg cos € differentiating this equation, dividing by it, and having regard to the sign of ae, we have INE Am SS Sip es eS SS Mm hj the varying angle which the magnetic axis makes with the horizontal, a ¢, is ob- tained from the micrometer observations. See the section on the temperature cor- : Am rections for ——. mM 49. It is conceived that ¢ cannot be determined with accuracy by the method of inversion, owing to mechanical difficulties in the formation of the axle, but Dr Lioyp has shewn* that if the needle be disturbed through a small angle 2, the mo- ment of the moving force brought into play by the disturbance is equal and opposite * Account of the Magnetieal Observatory of Dublin, p. 38. XXXVi INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. to the change of the vertical component of the magnetic force, which would produce a disturbance = 7, and hence he shews that the value of the constant tan ¢ will be given by the formula a? Stone 0 Tx = tane cot 0 Where @ is the magnetic dip, T’ and T the times of one vibration of the needle, the former in a horizontal plane, the latter in a vertical plane. 50. This method has been found to fail in practice ; the determination of the time of vibration in a vertical plane has been proved to be a matter of much diffi- culty, if at all possible, mixed up, as it is, with several sources of error, which are not easily accounted for or eliminated.* It has been shewn with respect to the time of vibration in a vertical plane, * The following statical method might be substituted for that of Dr Luoryp :—Let 1 be the small angle which the magnetic axis of the balance needle makes with the horizontal, then the equation of equilibrium is (48) mA cosa = Wig cos Fe AyeNc, e's (1.) if a magnet, whose moment is M, be placed vertically, with its centre at a distance r from the centre of the balance needle, and in the continuation of the magnetic axis of the balance needle when horizontal, the needle will then make an angle 6 with the horizontal, and the equation of equilibrium will be mX' cord = Wg eon (EF 8) aa where —_¢M Xo =X 94- HD CoP SOR ie he RSS ae (3.) From equations (1), (2), and (3), eM _ tané —tany 4) PON a cee € ee essa en ee (4. Now, if X be the horizontal intensity of the earth’s magnetism, and @ be the magnetic dip, VOLS ET Loe oy Oh ee ae ee (5.) and if the deflecting magnet be placed in the line at right angles to the magnetic meridian passing through the centre of a freely suspended magnet, and u be the angle of deflection when the centres of the magnets are at the distance r,, then (No. 26.) Cua #,° Ee ee a Had re ee iS By equations (4), (5), and (6), 3 3 “, tan u 4 tan w tan € = approximately ; 2 tan é (tan 6 — tan n) — tan u tan 9 2 tan é tan (6-2) and if 7 = 0, or be very small, as it is in general, when the needle may be considered horizontal, then n° tan u ta 5s ee Sid oh ante $C ATEN gay If the deflecting magnet be placed at right angles to the suspended magnet (as in Dr Lamont’s method), then sin w must be substituted for tan w. The a —— eee —— BALANCE OR VERTICAL FoRCE MAGNETOMETER. XXXVll lst, That it is found increased after the needle has been vibrated by any means through a large arc (2° or 3°). 2d, That it depends to a considerable extent, much more than theory will ac- count for, on the arc of vibration. 3d, That it is greater for the same arc, if it be deduced from a series com- mencing with a large arc, than if it be deduced from a series commencing with a small are. Ath, That it depends on the temperature of the needle. 5th, That it does not vary appreciably with the changes of position of the needle, unless as co-existent (4th) with the changes in the position produced by temperature.* It does not seem likely that the source of error indicated in the 4th conclusion can be eliminated ; any zero of temperature to which the times of vibration might be reduced would be altogether arbitrary. I have also found, since the above results were obtained, 6th, That the effect of one degree Fahrenheit on the time of vibration of the needle is variable, being sometimes as little as 0°05, at other times as much as 0°10. 51. The following method of determining the value of tan € has been adopted for the reductions in the abstracts :—if q be the temperature co-efficient, or the Am ate value of —— for 1° Fahr., k = a tan €, where a = the arc value of one division of m the micrometer head in parts of radius (52.), if it be assumed that the value of found, § 7, is dependent solely on the varying magnetism of the needle, or that the cause by which the time of vibration is affected has no effect on the position of the needle, assuming also that the value of g, determined by the usual method of de- flections, is accurate, then by the latter (Introduction, 1841-2, p. xliv), q = 0:000073, by the former (66.) = = 7-90, whence Ir ae = 0:0000092 ; 0-:000009 has been adopted. The mean value of the angle 6 should be determined by placing the deflecting bar at the distance r on opposite sides of the balance needle, and if the needle be nearly horizontal, the deflecting bar should be inverted in each position. This method has been tried since the previous portion of this note was written, and the mean of two results from deflections within the usual range of the instrument, which differ 0°0000003, gives k = 0:0000087, very nearly the value obtained No. 51, and adopted in the results; larger deflections seem to give about 0000008, but they have not yet been completely reduced. The accuracy of this method seems to depend almost wholly on the determination of 4, and it seems possible to obtain this certainly within 2’, or that the error of k may not be above 0°0000002. * Transactions of the Royal Society of Edinburgh, vol. xvi, p. 67. MAG. AND MET. OBS. 1843. k XXXVII1 INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. Values of the constants and adjustments. 52. Value of one division of the micrometer head in angular measure. The micrometer heads have 50 divisions numbered at the tens 1, 2, 3, 4, 5, a brass needle with scales graduated to 10’, at an equal distance from the centre as the spider crosses in the magnet, was placed on the agate planes, and the moveable wires of the micrometer brought to coincide with the graduated lines of the scale, the micrometer heads being read at each coincidence. Left Mic. Right Mic. June 21. 1841 (Table 13, Introduction, 1841-2), one division = 01004 01003 AripriSOs PSL RO, RS, se — 01002 0’:0996 Sept. 4. 1843 Observations gave ea eseeseeeeeeee = 01012 Noyiel3id843).\s. anunsdicieh bento. at reap pryoctenend chee eaass = 010138 0’:0999 Adopted mean value of one division, 01003, whence a = 0:00002918, € = 17° 34’, k = 0:000009 this value of & has been used in the abstracts. 53. Time of vibration in the horizontal plane. The adopted mean of all the observations, Table 15, Introduction, 1841-2, is 12*0. 54. Time of vibration in the vertical plane. The needle being in its usual position on the agate planes, the moveable wire of the left micrometer is made to bisect the spider cross ; the needle is then vibrated, by means of a small piece of iron or steel, through an angle varying from 15’ to 5’, and the periods of the cross passing the wire are estimated. When large arcs of vibration have been taken, the time of vibration is deduced from the last observations of the series, for the reasons stated, No. 50, 2d. The 4th conclusion given, No. 50, cannot be deduced from the observations for 1843, probably because constant arcs of vibration were not used, and the errors indicated 1st, 2d, and 3d, being included in the results. The arc of vibration was estimated till October 18, after which the are at commencing was measured by moving the wire of the right micrometer on the cross at the extremity of its arc of vibration ; the arc of vibration at the end is generally about 1’, being the smallest possible at which the passage of the cross can be estimated with any nicety. The following is a specimen of the observations, and of the method in which the results in the following Table are obtained :— BALANCE OR VERTICAL ForRcE MAGNETOMETER. XXX1X TABLE 12.—Observations for the Time of Vibration of the Balance Needle in a Vertical Plane, November 244 0", 1843. Time of passing the fixed wire. Time of 10 Vibrations. Cross rising. Cross falling. Cross rising. Cross falling. Ss. 33:6 54:8 15-9 19-0 40:0 1-0 Time of one vibration = 10555. TABLE 13.—Values of T, the Time of Vibration of the Balance Needle in a Vertical Plane. pads Arc at Time of | Tempere- hey Arc at Number Time of | Tempera- Gottingen commence- of one ture Gottingen commence- of one ture Mean Time. ment. | -vibrations.| vibration. | of Needle. Mean Time. ment. | vibrations.| vibration. | of Needle. dah h. , Ss. ° Jan. 14 2 0 7:5 30 9-72 59-5 Jan. 30 2 June 20 22 10-0 20 9-80 58-4 Feb. 6 3 3 12-0 20 9-50 55:3 Feb. 10 0 8 8-0 20 9-25 67-8 Feb. 14 0 7 10-0 30 9-14 61-7 Feb. 16 18 3 12-0 30 9-28 65-0 Feb. 22 1 7 10-0 20 9-36 61:3 Feb. 27 4 3 7-5 30 9-35 60-0 Mar. 10 1 3 7:5 30 9.45 71-2 Mar. 13 2 72 10-0 30 9-25 54-6 Mar. 21 3 12-0 20 Mar. 28 3 10-0 12 10-0 25 10-75t 60:5 Apr. 3) 8 10-0 30 14-0 30 9-97 54:5 Apr. 11 22 12-0 30 Apr. i238 7:0 30 12-0 30 11 25f 60-7 Apr. 23 23 10-0 20 12:0 30 10-75 62:3 May 1 6 10-0 30 12-0 30 10-62 65-0 6 : 63-7 8 3 3 * Feb. 16. This observation is from a natural vibration (produced by currents of air in the box ?). + Mar. 13. After this vibration the magnetometer box was lifted for an instant and then replaced. { Aug 23 and 31, and Nov. 12. The balance needle was removed for temperature experiments, and on Sept. 26 the magnetometer box was removed in order to be covered with gilt paper. xl INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. TABLE 13—continued. Arc at Time of | Tempera- ene Arc at | Number | Time of | Tempera- Gottingen commence- one ture M Ti commence- of one ture ment. |vibrations.| vibration. | of Needle. SE ce ment. |vibrations.| vibration. | of Needle. Gottingen Mean Time. a wponmnMmnaao: Dec. Dec. Dec. Dec. Dec. Dee. Dec. Dec. Dec. Dec. Dee. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. Dec. bo — 55. The following are the mean values of T, and the consequent values of &, T’ = 12°0, 6 = 71° 10’:— Jan. —Aug. 23. T= 952; k= 0-0000158, approximately * = 0:000015 Aug.24—Sept. 1. T= 10-40; & = 0-0000133, approximately & = 0:000014 Sept. 5—Nov. 138. T=1065; & = 00000126, approximately & = 0:000013 Nov. 13—Dee. T=1007; &#=0:0000141, approximately & = 0:000014 The approximate values of k are those given at the foot of each page of the Magnetical Observations. It will be observed that all of these values differ very considerably from that obtained, No. 51, which was adopted in the reductions for the Abstracts, after the above values of & were printed in the notes to the Magneti- cal Observations. 56. Adjustments. August 23. 1843. The balance needle was removed for the purpose of deter- mining its temperature coefficient ; the needle was placed in a small copper trough with a glazed lid, which trough was surrounded by water, contained in a larger trough. * Aug. 23 and 31, and Nov. 12. See note on preceding page. BALANCE OR VERTICAL FoRCE MAGNETOMETER. xli Aug. 24. 1843. The temperature experiments were repeated ; the brass rings containing the spider crosses were removed, and the needle was immersed in water of different temperatures ; at the end of the observations the needle was found con- siderably tarnished; the stains were partially removed by rubbing with crocus. After the temperature observations the needle was vibrated horizontally, and then adjusted. When the needle was placed on the agate planes it was altogether out of balance, the S. end falling till caught by the Y ; the horizontal screw was then turned in till the reading of the micrometer was about 200 minus ; both microme- ters read the same, and the N. end was much better in focus than before. Sept. 1. 1843. The balance needle was again removed in order to determine the temperature coefficient, the previous observations not being satisfactory. Sept. 2. Temperature observations continued, the needle being placed in water as before. The stains were partially removed by rubbing with crocus. Sept. 4. After vibrating the balance needle horizontally, and determining the value of the divisions of the micrometer head, observations were made to verify the horizontality of the fixed wires in the micrometers, when it was found necessary to move the fixed wire of the right micrometer down 8 micrometer divisions. The micrometer heads were exchanged for convenience of reading, as the read- ings are almost always negative, or the north pole of the needle is generally above the horizontal. 57. The deviation of the line joining the spider crosses from the magnetic axis of the needle was determined, by repeated reversals, to be + 8 micrometer divisions ; merely lifting the needle by the Ys was found to give readings differing sometimes 20, 30, and even 40 divisions. The horizontal screw was moved till a negative reading of about — 130 was obtained; and as it had been previously found that lifting by the Ys altered the reading, the needle was not left till consistent read- ings were obtained after the different lifts. The following were the readings at each lift after the last movement of the horizontal screw :— — 120, — 126, — 121, — 120, — 127, — 138, — 134, — 131, — 134, — 1386, — 131. September 264 4"—6", 1843. The balance magnetometer box was removed in order to be covered, externally and internally, with gilt paper. November 13, 1843. The balance needle was again removed for the purpose of determining its temperature coefficient; the brass rings and spider crosses were removed, and the needle immersed in water as before. The needle was adjusted the same day. The value of the micrometer division was also determined, and the deviation of the line joining the spider crosses from the magnetic axis was found — 36 divisions. The needle was left reading about — 60 divisions. 58. Mode of observation and reduction. The moveable wire of the right micrometer is made to bisect the spider cross 5* before the minute of observation, and that of the left micrometer 5° after the minute MAG. AND MET. OBS. 1843. l xl INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. of observation ; the mean of the two readings gives the position of the needle at the minute. The readings increase negatively or positively as the north pole of the needle moves above or below the horizontal wire ; the readings are generally nega- tive. The quantities given in the magnetical observations are obtained thus :— n being the observed reading of the needle, ¢ that of the thermometer, a = 7:90 the temperature coefficient, R the quantity in the Tables, R= 700+ % (¢— 26°) + increasing tabular quantities, therefore, indicate increasing vertical force. § 7. DETERMINATION OF THE TEMPERATURE COEFFICIENTS OF THE DEFLECTION, BALANCE, AND BIFILAR MAGNETS. Deflection Magnet. 59. The magnet used for deflections in observations of the absolute horizontal intensity was placed in a copper trough, resting on a beam of the deflection appa- ratus (25.); the temperature was varied by means of ice and water of different tem- peratures ; a thermometer lying on the magnet indicated its temperature; the declination magnet was observed simultaneously with the deflected (or unifilar) magnet; and the bifilar magnet before and after each change of temperature. 60. If m be the moment of the magnet, X be the horizontal intensity of the earth’s magnetism, 0 be the westerly declination, w the angle which the deflected magnet makes with the astronomical meridian, then m = Xtan (wu — 0) differentiating, all the quantities being variable, and reducing Am _ Au—AOod AX m ~ 2 sin 2 (w— 0) * x or if u and w are the unifilar readings, d and d, the declinometer readings, 6 and 6, the corrected readings of the bifilar magnetometer when the temperatures of the deflecting magnet are ¢ and ¢,; D is the mean deflection, in this case small; f the coefficient for reducing the declinometer scale divisions to values of unifilar divisions, k the bifilar coefficient, then since =” = (t — t) mm q Ue = pe Teds a erat) Carey SHR CF The quantities in the last column of the following Table have been obtained from this formula. TEMPERATURE COEFFICIENT OF THE BALANCE MAGNET. xh TABLE 14.—Observations for the Temperature Coefficient of the Deflection Magnet. Reading Biflar Gottingen Tempera- Reading jof Declino-| %— up . Correction Mean Time, ture of tot of meter MUCUS. (ane a) fOrrLn ahyr. Magnet. Unifilar. | reduced | f(d@—dp)).| Reading | Thermo- ='g: =fd. Corrected.| meter. o 2 Se. Div. Se. Div. Sc. Diy. Magnet | away. 157-26 35:30 24.65 156-65 y 501-0 0.000287 59-95 156-17 501-7 0 \ 16-90 : -000369 76-85 17-90 155-59 I 502-7 ' 000278 58:95 | 5595 | 11:88 | 155-63 503-3 i 36-90 ® | 10-05 | 155-49 503-9 20-20 “4 -000289 57-10 11-68 | 155-64 504-3 : : Ss 21-60 . -000260 78-70 13-16 | 155-67 505-6 . 22-20 J : -000272 56-50 19-90 11-11 155-13 . 505-8 . 000265 36-60 10-05 | 155-36 506-8 . ; 20-30 : -000253 56:90 11-50 | 155-50 507-4 : 25-05 : -000307 81-95 91-05 13-41 155-50 : 506-8 : .000233 60-90 12-50 | 155-80 507-4 . 24:05 2 ° -000268 36-85 10-78 | 155-69 507-7 : 30:50 : -000287 67-35 13-30 | 156-00 508-0 . 23-40 . -000324 43-95 99.55 11-72 | 156-33 } 507-8 : .000315 66-50 13-88 | 156-70 508-1 . Magnet | away. 264-35 | 157-02 0 0 1 1 1 2 2 2 2 3 3 3 4 4 rs 4 The mean value of g = 0:0002877. Balance Magnet. 61. The value of the coefficient for the balance magnet was obtained by obser- vations, similar to those for the deflecting magnet, on 5 different days ; weight was given to the result of each day’s observations, depending on the formula, No. 32. The final result was q = 0:000073.* 62. The impossibility of determining the value of the micrometer divisions of the balance magnetometer by the usual method has been already pointed out. It is obvious, therefore, that if shut up to this method the temperature corrections cannot be applied even when the observations are left in the state of micrometer divisions. The doubt whether the changes of the magnetic moment of the needle occur as rapidly as those of temperature in all cases, and therefore, whether a co- efficient obtained from changes of 30° or 40° in a few minutes (as in the tempera~- ture experiments) was likely to be applicable to observations where the changing temperature of the needle was rarely above 1° in the hour, and the fact that other sources of error (perhaps the effect of temperature on the points of support of “the * Tables 19 and 20, Introduction to the Makerstoun Observations, 1841 and 1842. xliv INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. needle) were altogether omitted,* these induced me to apply a correction obtained by a method which first occurred to me in 1842, for the purpose of avoiding the necessity of removing the needle and breaking up the series of observations. This method has already been described, and the final results have been given in the Transactions of the Royal Society of Edinburgh (Vol. xvi., p. 73); the coefficients obtained by this method were used for correcting the results of the observations of 1841 and 1842;} they have also been used in correcting all the observations in this volume. It will be necessary to enter more fully into the investigations here. 63. A series of days being selected during which the readings of the instru- ment seem regular (rejecting any day of marked disturbance), and in which the changes of temperature from day to day are considerable ; the hourly or two hourly readings for the position and temperature of the needle are separately summed ; if y, be the sum (or mean) of the micrometer readings for the first day in the series, y, for the secondday, . . . y, forthe n™ day; i,& . . . #, being the cor- responding sums (or means) of the thermometer readings, if g’ be the temperature coefficient in micrometer divisions, and it be assumed that the vertical force changes gradually throughout the period, a being the sum (or mean) of the daily changes for all the hours summed for values of y, y, &c., we shall then have a series of equa- tions like the following, in which it is considered that the temperature of the pre- ceding day is either greater than that of the succeeding in all the series, or that it is less than it :— Wyo- w= a- (a) Yo — Yori = — O— (bh —- ba) ¥, — Ys= — 20-(t, —b) 7 Yp — Yps2 = — 2A—(by — bye) 7 (1.) AT Yays na = CA tid Yo — Yornti = —~ NA — (tp ik by-eneea) g Summing all those equations in which @ has the same coefficient, naming the dif- ferences Yp — Yps1, 4413 tp — tyy1, 4 hh, and since if t, > &, then y, < y», we shall have the equations BAK gy 4% PAL A ty BBS 2 og PE ie Bick cui ve (oy aa aa ZAYn n Oo SS + — Sanh of Aly * It will be evident, that the method of obtaining the value of the unit for the balance magnetome- ter, described No. 51, supposes no other source of error than that due to the varying time of vibration, — or that the causes of error indicated above are of the second order compared with it. + The temperature coefficient, obtained by the usual method, had been applied, and the observa- tions so corrected had been printed before I had satisfied myself of the preferability of the new coefficient. TEMPERATURE COEFFICIENT OF THE BALANCE MAGNET. xlv where, as it tends to simplify the investigation, and is at the same time sufficiently accurate, A ¢, is the mean of all the values of a ¢. Taking the difference of each of the equations with that of every one after it, series of equations of the following form will be obtained :— HR mes Mi, Summing these series of equations, we obtain the following :— pan ZAIn VAS se PK >) n+1l.n.n—1 a wen (S S| ea 3 (Se ee). = nm. m—1 2At BZAd ZAR 3A ha 6 A ty Summing equations (1.), we have TAY): 2 +t. -a ee NENT From these two equations g’ will be obtained. 63. A period of 52 days, from June 1 till July 22, 1843, was selected as nearly free from disturbances (the 3d and 7th of June only being rejected on this account), and as containing considerable daily changes of temperature ; the sums of the micro- meter and thermometer readings for each day were entered in columns titled 3 y, 32, each sum, from June | till June 26, was then compared with all the sums following, up to the 27th day after. The differences will be found in the following Table in two portions, namely those for which ¢, is greater and less than ¢,,,. The results for a second period, namely, from August 4 till September 18, 1844, are also given. TABLE 15.—Results of Comparisons at different Intervals. ty > tose ty < to+r J Interval Mean SS TRIE of the Bem cep art. No. of Pa.) No. of results. a sons. compari- — ZA (y) ZA (¢) a A(y) compari- | 2A (y) —ZA (2) Me fe alk (y) sons. 2A (2) sons. 2A ©) Days. Mic. Div. ce Mic. Div. Mic. Div. 2 Mic. Diy. || Mic. Div. 1 7 1149-8 102-8 11-2 11 2916-7 325-8 8-9 9-5 : 2 7 2050-1 224-4 9-1 11 3925-7 477-0 8-2 8:5 SR 3 9 3171-6 379-2 8-4 9 4341-2 541-4 8-0 8-2 = 4 11 3879-0 446-5 8-7 8 4012-0 | 496-0 8-1 8-4 a 5 9 3230-8 386-2 8-4 10 3552-0 421-4 8-4 8.4 = 6 U 2967-8 316-5 9-4 11 3035-0 363-6 8:3 8-8 = Uh 5 2403-0 277-2 8-7 17 5294-4 685-2 7:7 8-0 =) 8 4 1857-9 210-0 8:8 14 5314-9 694-1 7:7 7-9 zi 9 6 | 1391-3 | 167-9 | 83 12 | 6094-5] 7751 | 7:9 | 7-9 © 10 6 782-0 96-1 8-1 11 5281-9 724-6 7:3 7-4 =| 11 7 1853-8 196-0 9-5 11 5793-0 732-5 7:9 8-2 eS 12 5 1558-0 210-0 7:4 14 5488-3 669-2 8-2 8-0 13 6 1439-6 192-0 7-5 13 5656-1 734-5 77 7 MAG. AND MET. OBS. 1843. m xlvi INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. TABLE 15—continued. tp > bo+r tp < lotr Interval . Mean between of the cope No. of : es No. of results. aeee compari- |— = A(y) ZA (t) ate: (y) compari- | 2A (y) = > (4 (2) 22) sons. ZA (t) sons, —zA4 (2) .Mic. Div. Q Mic. Diy. Mie. Div. a Mic. Diy. || Mic. Div. 6 1305-6 | 161-5 Sei 16 8350-4| 1053-9 7-9 7-9 5 867-6 | 116-0 7-5 13 7452-6| 928-7 8-0 8-0 4 1 249-2 19-0 13-1 17 6895-8} 878-3 7-8 8-0 ES 3 122-7 28-2 4:3 15 7329-7| 819-5 8-9 8-8 3 523-6 48-8 ay. 16 7453-3| 871-6 8-5 8-7 a 5 722-5 61-5 41-7 14 7758-3| 849-7 9-1 9-3 > 3 684-6 57-5 11-9 15 6731-9| 789-2 8-5 8-8 = 4 371-8 25-0 14-9 18 9824-7| 1094-4 9-0 9-1 1 = G03 7-5 |— 8-0 17 7868-6| 901-8 8-7 8-6 4 1 64-8 26-3 2.5 17 8330-0] 929-5 9-0 8-8 3 1 170-0 33-6 5.1 beg 8277-3| 939-0 8-8 8-7 = 3 322-0 88-1 3-7 16 8599-2} 961-7 8-9 8-5 5 445-0 | 125-6 3-5 14 7763-2| 861:2 9-0 8-3 Foralltiet | 130 |33523-8 | 4003-4 8-37 || 357 |163340-7| 19518-9 8-37 || 8-37 1 9 2291-0 | 281-9 8-1 9 3612-2] 359-7 | 10-0 9-2 2 11 4152-1 | 450-0 9.2 6 3270-8| 282-9] 11-6 || 10-1 3 10 4586-5 | 399-1 11-5 6 2443-8| 2164] 11-3 {11-4 4 8 3163-2 | 269-6 11-7 8 3292-5| 281-6 | 11-7 |}11-7 4i 5 7 2738-0 | 372-4 7.4 9 6118-6| 572-1 | 10-7 9.4 + 6 6 2947-5 | 348-2 8-5 11 7982-3| 833-1 9-6 9-2 ey 7 7 3026-9 | 342-7 8-8 8 4941-3] 609-6 S1) 8.4 os 8 7 2422-9 | 364-7 6-6 10 6033-4| 690-0 8-7 8-0 ih 9 5 2542-5 | 306-0 8-3 11 6990-6| 852-6 8-2 8-2 2 10 6 3128-4 | 394.9 7-9 10 8812-7| 979-3 9-0 8-7 EI 11 7 2382-6 | 283-3 8-4 9 8056-0] 935-0 8-6 8-6 A ate 5 1859-8 | 255.3 | 7-3 11 7594-6] 967-8 | 7-8 || 7-7 2 13 5 2446-5 | 310-3 7.9 11 7621-9| 1048-7 7:3 7.4 14 6 2423-3 | 327-6 7.4 13 8301-4} 1106-1 7-5 75 +H 15 4 1029-4 | 145-1 Fol 12 7282-6| 952-0: 7-6 7-6 2 16 4 992-0 | 219-3 4-5 12 6617-7| 819-2 8-1 7-3 a 17 5 1836-3 | 259-6 71 11 6533-:0| 882-7 7-4 7-3 a Pras 4 1622-8 | 194.7 8-3 12 5914-3| 841-3 7-0 7-3 19 3 929-6 | 110-6 8.4 13 6211-6} 912.9 6-8 7-0 4 1529-3 | 174-8 87 13 5500-6} 783-0 7-0 7-3 3 1348-5 | 212-7 6-3 12 5666-1| 684-3 8-3 7-8 | 6 2623-6 | 386-2 6-8 11 6152-6| 685-1 9-0 8-2 Forall the? || 132" |52022-7 | 6409-0 8-11 228 |134950-6| 16295-4 8-28 || 8.24 From the series, June—July, 1843, in which ¢, < ¢,,,, the following result was obtained :— > z = 8°338 ; —- = 0:0375, A ¢, = — 54:7, a = — 2°05 or the mean daily 0 AY) _ ZA (2) change = - = — 0.23; g’ = 7:832 microm. div. 64. The series, June—July, in which ¢, > ¢,,,, and the series, August—Sep- tember, 1844, are either two irregular in the number of days compared, or the TEMPERATURE COEFFICIENT OF THE BALANCE MAGNET. xlvii number of days compared are too few to give good results.* It is obvious, however, that if we consider the equation PEP AY, _ra ee Se Ae yO Aye : that the value of g’ deduced from the quantity = a alone will be too much or too " little according as the sign of a ¢, is positive or negative; whence, if a period of moderate length be selected, throughout which the mean daily temperature increases and diminishes considerably, we may neglect the sign of A ¢, and the quantity a, as in the summations the coefficients of the latter will nearly destroy each other. For periods of moderate length, and free from disturbances, it is the fact, as may be seen from the previous Table (with the exception of one day), that the signs of a y, and A ¢, are always opposite. The latter method, then, will be found the easiest, and, it is conceived, in general the most accurate. The mean results obtained for the series, June—July, when ¢, > and < ¢,,,, are indeed exactly the same, and the partial results seem to indicate that the sign of a is itself so variable as to render its total effect nugatory. The same remark applies to the series August—Septem- ber 1844. The following Table contains a series of results obtained according to the latter method. In each series each day is compared with every day following it to the end of the series for the differences a y and a ¢ :— TABLE 16.—Determinations of the Temperature Coefficient for the Balance Magnet from Comparisons of the Daily Observations. Observed Period. Ds > Time of Remarks. - @) as (y) Z Vibration. 1843. : Mic. Div. Mic. Div. 8 won: 16—Jan. 21 525-3 4315-3 | 8-21 9-7 In 1848 there were 9 daily obser- Jan. 23—Jan. 28 817-7 5723-5 | 6-99 9-7 a ee Ea Jan. 30—Feb. 4 576-0 4151-5 7-21 9-5 Sept. 2, the needle was removed in Feb. 6—Feb. 11 609-9 4080-6 6-69 9-4 order to determine its tempera- June 1—June 30 | 14320-4 114646-9 8-006 9-7 ture correction by the method of Sept. 6—Sept. 16 1083-7 8730-4 | 8-04 10-8 deflections. 1844. May 9—May 24 8415-4 66621-7 7.93 8-6 In 1844 there were observations Aug. 3—Sept. 6 | 21696-9 | 171460-5 | 7-902 Bi HL geet ery ee = OF Laas cy, 17933-0 141648-2 7-898 9-8 September 1843 and February 1843, 1844 for temperature experi- BOP Als. aia 48045-3 | 379730-4 7-903 8-5 ments. The mean value of g’ from the series in 1843 is 7-90, and from the tempera- * Such as these results are, however, their disagreement with the result obtained by deflection ex- periments and vibration, is, in each case, even more than that of the adopted result. xlviil INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. ture experiments it is 4°9 micrometer divisions ; the mean of the two series in 1844 gives q’ = 7:91, while the temperature experiments give it 3°8 microm. div. 65. The following Table contains the results deduced in three cases when re- spect has been paid to the sign of ¢, — ¢,,,; the last column contains the value of q’, obtained by giving equal values to the quantities ZA (t) and — Za (t) TABLE 17.—Results of Comparisons, regard being paid to the sign of by —bnare tp > boar 3A (2) -34 () FS) -24@ 3A (y) Ene Period. 1843. eS Mic. Diy. Mic. Div. 4 Mice. Div. Mie. Div. Mice. Diy. June 1—July 22 4003-4 33523-8 8-37 19518-9 | 163340-7 8-37 8-37 1844. ‘May 9—May 24 5404-3 37559-9 6-95 3011-1 29061-8 9-65 8-30 Aug. 3—Sept. 18 6409-0 52022-7 8-12 16295-4 | 134950-6 8-28 8-20 For all the periods || 15816-7 123106-4 7:783 38825-4 | 327353-1 8-431 8-107. 66. The three final results obtained are g’ = 7°832, q’ = 7:903, and ¢ = 8-11; the adopted value of g’ = 7:9 micrometer divisions. 67. Early in the investigation of this subject it occurred to me that it might not be desirable to eliminate all the effects of change of temperature on the posi- tion of the needle, as the actual daily or diurnal variations of the earth’s magnetism might depend to some extent on the same cause. The results, obtained in many ways which it is not necessary to repeat wholly here, shewed that, at least for periods of a month, no such connexion exists, or that it is inappreciable. To such an extent had the supposition been refuted, that it was ultimately totally forgotten by me, and, of course, it was also forgotten that others might entertain a similar suspicion ; the fact that it has been proposed as an objection to the method will render it de- sirable that I should adduce distinct evidence of its futility. 68. As it will scarcely be supposed by any one that the earth’s magnetism varies immediately with changes of the aérial temperature, the results obtained from the comparison of one day with the next following may be first considered. As far as the results, Table 15, go, the comparisons of one day with the next following give a considerably larger value of q’ than that adopted, and, therefore, one differ- ing still more from the value obtained by the usual method; this at least tends to prove that the result adopted is much better than that by the other method. In the following, which also prove the same fact, one-sixth of the comparisons are of the readings on days with those on the second days following, namely, Saturdays with TEMPERATURE COEFFICIENT OF THE BALANCE MAGNET. xlix Mondays; the remaining five-sixths are of the readings on days with those on the days immediately following :— 1844. 123 Comparisons, g’ = 8:33. Approximate value of ¢, by temperature experiments and vibrations, = 3:8 eee MPL AGE CO OMIPALISONG Grim OG Ue) cacrw dee ucieuncmreidselacnianicmsieins)a/ada(ecsealiuaisieis «sicielote/vssiesaiiosisiestpiaet seelsraissisiais(esiel = 30 69. The most severe method of testing the accuracy of the coefficient thus obtained, is that of artificially heating the Observatory, and of comparing the in- strumental readings on days when so heated with those on days when the tempera- ture of the magnet depends on natural causes ;* the results of such a series of com- parisons are given below. In order to render the series perfectly trustworthy, all selection has been avoided. From January 1 till March 16, 1843, the stove in the Observatory was lighted every day, with the exception of January 23; it was not lighted on any other days of the year, excepting March 22 and 23, October 19, November 25, and December 21; the means of the instrumental readings, corrected for temperature by the adopted coefficient (7-9), on each of these days were compared with the means on the four or five days immediately preceding or succeeding, and the means on March 13, 14, and 15 (the last three days on which the stove was continuously lighted), were compared with the five succeeding days on which the stove was not lighted. ‘The sums of the differences 3 4 (¢) and 3 4 (y) are given in the following Table, together with the sums of the differences of the external tem- peratures 3 4 (T) for the same days :— TABLE 18.—Results of Comparisons when the differences of the Temperature depend on Artificial Causes. Day of No. of com- Days compared with ‘|}compa-| 2 A (T) ZA (é) ZA (y) parison. risons. Error of | Resulting coefficient. | coefficient. 1843. 1843. Jan. 18—21, 2428 Mar. =, L624, Mar. . 16—21, Mar. . 16—21, Mar. . 16—21, 24—28 Mar. . 16—21, 2428 Oct. - 14185" 20—25 Nov. . 21—24, 27—Dec. 1 Dec. 16—20, 2227 ° G Mic. Diy. Mie. Div. +63-4 | 139.2 + 1-41 6-49 — 21-2 35-4 + 2-42 — 97.5 31-4 +1-31 — 29-0 31-9 +0-90 +79-1 58-8 : +0-11 455-7 80-4 . —0-73 —41.2 — 2.58 —84-5 | 113-1 + 0-67 —49.9 + 0:07 9 5 5) 3) 9 9 9 9 9 The results of all the comparisons are— 2 A(T) = — 551, 2A @ = 697°5, = A (y) = + 104-0 mic. div. ; error of adopted coefficient = + 0-15 mic. div. * This method was that first tried for the determination of the coefficient, but ultimately abandoned on account of the heated stove generating currents of air in the room and magnetometer boxes. MAG. AND MET. OBS. 1843. n ] INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. On three days the signs of 3 (T) and of 3a (¢) are the same, namely, on January 23, March 22, and March 23 ; if the comparisons with these days be rejected, we have 2A (T) = — 258°, 2 A (¢) = 419°1, 2 A (y) = — 39'9 mic. div.; error of adopted coefficient = — 0:09 mic. div. In all the previous comparisons the signs of a (T) and ¥ a (¢) are the same ; in this series they differ, and the coefficient is unaltered.* 70. In correcting the observations by this coefficient, no attention has been paid to the varying times of vibration in the vertical plane; this, as has already been noticed, cannot be done. From the results in Table 16, it seems very doubt- ful if it should be done, as the correction deduced at various times does not seem to differ with the time of vibration. After correcting the observations made in the years 1844 and 1845 by the same coefficient, I was led, from the results, to suspect that some source of error still remained. Investigations for the temperature cor- rection at different times throughout these years have shewn me that the coefficient in micrometer divisions is not constant, and that it varies from some cause which I have not as yet determined ; certainly, however, it does not vary directly with the time of vibration in the vertical plane, as theory would shew (49, 51.), but rather inversely ; this, however, and other facts in connexion with the 6th conclusion (50.), will be considered in the Introduction to the Observations for 1844. It will be enough to mention at present, that the results for the value of g’, in 1844 and 1845, vary from 7:0 to 10-0 micrometer divisions ; by the usual method, at the end of 1845, it would not exceed 3:0 micrometer divisions. Bifilar Magnet. 71. The value of the temperature coefficient for the bifilar magnet, determined by temperature experiments on two days, which gave very consistent results, is g = 0:000304, See Table 19, Introduction, 1841-2; or if k = 0:00013, ¢ = 2:34 scale divisions, this includes the theoretical correction for the expansion of the suspending silver wires and brass grooved wheels; it did not seem improbable, however, that other sources of error might exist. The results for the balance needle shewed that this might be determined by comparisons of the daily observations ; such comparisons have been made, and the following Tables contain the results. The differences of — the daily sums of the bifilar magnetometer readings are indicated by 4 (x), the — SANG) ZA (a) results are given in scale divisions whose value = 0:00013. * Tf other evidence of the accuracy of this method of determining the temperature coefficient should ) still be desired, I would refer to the coincidence of the results for the value of &, No. 51, and end of note, p. XXXVii. TEMPERATURE COEFFICIENT OF THE BIFILAR MAGNET. li TABLE 19.—Determinations of the Temperature Coefficient for the Bifilar Magnet, from Comparisons of the Daily Observations. BOS S163 BRGUS. XA (é) |—2A (2) —Za(d)| BA (x) | g’ Mean of | Mean Period. results. result. 1844. ° Sec. Div. : Sc. Dy. | Se. Div. |] Se. Div. May 9—May 24 5334-9} 13066-8 “f 4033-0} 1-71 May 29—June 28 11938-2| 24597-2 . 45966-3| 1-72 July 17—July 30 1843-1 3004-0 : : 8470-4] 1-83 Sept. 2—Sept. 25 27322-6| 53684-3 : : 1260-8| 2-03 Nov. 26—Dec. 13 17855-4| 36791-6 3° 3104-5] 1-45 | —_—- —_—_— For all the Periods | 64294-2 )131143-9 36482-7 | 62835-0| 1-72 1-88 The mean of the two final results gives g = 1-90 scale divisions; g = 0:000247 this value of g has been adopted, and all the observations in this volume are cor- rected by the equivalent values in scale divisions. 72. The following Table (similar to Table 15) contains the particulars of the comparisons for intervals of different length, from May 14 till June 28, 1844. TABLE 20.—Results of Comparisons at Different Intervals. t t t Interval 2 te os < spud Result SE ESraU Vic TT | | ecm venenatis A TR A ee trom, all compari- the com- sons. No. of — ZA (z)| No. of A (x) || parisons. i- |— 2A (z)| 3A (¢) |= i-| ZA(#@) |—3 A (4) ——— Cees lar eraoe kee in Park aT Se. Diy. Se. Div. 2. 0-8 311-6 300-0 . 656-8 457-9 1035-1 619-6 1255-5 650-5 1316-7 812-8 1574-1 896-7 2097-9 | 1198-1 1894-9 | 1081-4 1821-9 | 1085-3 2030-1 1116-7 1970-3 997.0 1989-7 | 1147-8 1839-5 | 1087-9 1940-1 1171-5 21734-2 | 12623-2 Se. Diy. + 142-8 169-2 229-8 118-2 459-5 217-7 689-5 338-1 811-2 479-1 976-5 453-9 1194-2 590-7 949.9 502-9 790-7 413-4 805-6 362-9 864-5 390-9 1075-5 588-4 1324-3 698-2 1229-5 599-7 11543-5 | 5923-3 4 a ee Oe ee On eee IDDWDOUOUNDDONOAONO tee oe ee ON ry eo) SUITISHUNhHHHHOUAS bo 5 4 4 6 6 6 7 5 6 3 4 5 if 6 4 COOCOUMNNUOUOOrKFNTNOF © For all ie intervals, ~I li INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. =A (2) ZA (é) parisons have been of the readings on one day with those on the next following, the results are remarkably consistent for all intervals, and in no case does the result amount to that by temperature experiments ; as an evidence, however, that the first results differ from the others only accidentally, the following is given, which con- tains all the comparisons made of the readings on one day with those on the day immediately following, with the exception already mentioned for the balance magnet, No. 68 :— 73. With the exception of the results of the values of , where the com- TABLE 21.—Results of Comparisons with One Day’s Interval. Period compared. Boss Voy ZAzL q: comparisons. 1844. ° Se. Div. Se. Div. May 9—May 24 11 884-8 1792-6 2-03 May 29—June 28 26 1262-8 1989-8 1-58 July 17—July 31 11 504-5 691-9 1.37 Sept. 2—Sept. 25 19 834-0 1551-9 1-86 Nov. 26—Dec. 13 15 842-9 1563-2 1-85 7589-4 4329-0 All the Periods Tn this case it will also be remarked, that no partial result is as great as that from the temperature experiments. | 74, As a farther evidence that the result obtained for this instrument is also independent of any cause, such as has been already suggested for the balance needle, the following Table contains the results of the comparisons on the same days as those already given for the balance needle, and on which the differences of tempe- rature depend on artificial heat :— TABLE 22.—Results of Comparisons when the Differences of Temperature depend on Artificial Causes. Day of No. of : com- Days compared with compa-| >A (T) ZA) | 2A (x) one: || Reus parison. nae, coefficient. | coefficient. 1843. 1843. ° 2 Sc. Div. Se. Div. Se. Div. Jan, $23 Jan. 18—21, 24—28 9 + 63-4 130-2 + 36-3 +0-29 1-61 Mar. 13 Mar. 16—21, 5 — 21-2 28-1 —14-6 — 0-52 2:42 Mar. 14 Mar. 16—21, 5 — 27:5 26-1 — 8-0 — 0-31 2-21 Mar. 15 Mar. 16—21, 5 — 29-0 28-1 + 4-8 +0-17 1-73 Mar. 22 Mar. 16—21, 2498 9 +79-1 62:4 +52-0 +0-83 1:07 Mar. 23 Mar. 16—21, 24—28 9 +55-7 79:5 + 23-3 +0-29 1-71 Oct. 19 Oct. 14—18, 20—25 9 —41-2 99-6 + 32-8 + 0-33 1-57 Nov. 25 Novy. 21—24, 27—Dec. 1 9 — 84:5 97-0 + 29-9 +0-31 1-59 Dec. 21 Dec. 16—20, 22—27 9 —49-9 83:8 + 1-4 +0-02 1-88 INCLINOMETER. hii The quantities ~ (2) are obtained from the observations corrected by the co- efficient g’ corresponding to the value g = 0:000247 (as in this volume), but are re- duced to scale divisions of the common value 0:00013. In one case only does the resulting coefficient exceed that by the temperature experiments. The final results are as follow :— = A(T) = — 551; = A (t) = 6348, > A (@) = + 157°8 Se. div.; error of adopted coefficient = + 0°25 Sc. div. If the three days, January 23, March 22, and March 23, on which the sign of 3 a (T) is the same as the sign of 3 a (t), be rejected, we shall have = A (T) = — 2533; © A (@) = 36277, = A (a) = + 46:3 Sc. div.; error of adopted coefficient = + 0:13 Sc. div. 75. It is not necessary to reason on these results; the remarkable agreement of the partial results by all the methods is at once evident. A cause of the differ- ence from the result by temperature experiments has been already pointed out, namely, the probable effect of temperature in diminishing the elasticity of the sus- pending wires. This source of error might be avoided by a silk suspension, but another of a much graver nature would be introduced, namely, the effect of varying humidity, which could not be eliminated. 76. All the observations of the bifilar magnetometer have been corrected by the equivalents in scale divisions of the coefficient g = 0:000247; the coefficients in scale division are given No. 39. § 8. INCLINOMETER. 77. The dip instrument was made by the late Mr Rosinson of London. The vertical circle is 9} inches in diameter ; it is divided to 10’, the graduations counting from 0° on the horizontal to 90° on the vertical; 1’ is estimated with the aid of lenses attached to a glazed case ; the vertical circle turns with a copper framework on a vertical axis, centred in a horizontal circle ; the latter is 6 inches in diameter, is divided to 30’ and is read to 1’ by means of a vernier. A sliding framework carrying Ys moves within that bearing the agate planes on which the axle of the needle rests, the Ys serve to lift and lower the needle on the agates, but they have been found to act very irregularly, at times giving the needle a pitch in a certain direction. A level screwed to the basement plate indicates the horizontality of the agates ; this was, however, also verified occasionally by means of a small level placed upon them; it was found that the level varied according as the door of the case inclosing the instrument was shut or open; it was, therefore, always tested with the door shut, as it is during observations. 78. The reading of the horizontal circle, when the vertical circle is in the mag- netic meridian, was obtained with the aid of a horizontal needle, carried on a pivot whose arms rest on the agate planes. There are two dipping needles, numbered 1 and 2, and one end of each needle is marked A, the other end is marked B; all the MAG. AND MET. oss. 1843. 0 liv INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. marks are on one face of each needle. The needle is observed in four positions with one end dipping, namely, with the marked face of the needle on the same side as, and opposite to, the graduated face of the circle, the latter being in the meridian, first to the east, and then to the west; as each extremity of the needle is observed there are thus eight readings obtained. The poles being changed, and the other end dipping, other eight readings are similarly obtained. The means of the two read- ings for each position are given in this volume. In changing the poles, the needle was placed on a small wooden block having a hole to receive the axle; it then received eight strokes on each face (as in the method of double touch) from two magnets, each 9 inches long, # inch broad. 79. The inclinometer occupied the pillar I, in the plan (Plate I.), to the east of the declinometer pillar till May 30. 1843, when it was removed to the wooden. house, described No. 24, where it was placed on a strong wooden post unconnected with the floor. 80. After June 1843, many of the observations were rendered valueless by the action of the lifter on the needle when the latter was in certain positions. The fol- lowing notes to the observations made at the time will explain the nature of the difficulty :-— July 26. 1843. This observation made with great care, in order to determine if the apparent increase of dip is real, or only due to instrumental error. Every reading was determined by at least a dozen trials; the different trials varied little for the same position with one exception, in which the readings varied 10’ on each side of the mean; there is, however, evidently something wrong with the lifter, as, on attempting to verify a reading marked (a), after the completion of the observa- tion, only 73° 45’ could be obtained, instead of 74° 0’. August 1. 1843. As it was found that the lifter did not move freely last obser- vation, it was taken out, cleaned, and bent a little, so as to fit better; to-day’s ob- servation was then made, but some other source of error exists, as there is a ten- dency, in lowering the needle on the planes, to move it always in one direction ; the readings thus may be made to go on increasing, and, by a slight difference in the mode of lowering, they may be made to go on diminishing. Jt cost two hours to make the first reading, and the observation is not considered good. September 12. 1843. Previous to this observation, the agate planes were ad- justed to horizontality as accurately as the small level would permit. The obser- vation was bad, but chiefly in the reading marked (*), 67° 30’ was the reading generally gained, but after half-an-hour the needle rested at 68° 19’. After this date the imstrument was sent to Messrs AprE and Son for adjust- ment, when the needle No. 1. was also adjusted. The following are notes to the observations after the adjustment of the instru- ment :— October 6. 1843. Observation not considered good—several of the readings BAROMETER. lv doubtful—the needle often has a tendency to read any thing, and is very irregular in its motions when lowered by the Ys. (Observer W.) October 8. 1843. Needle No. 2. The readings are much better than with needle No. 1, but some of them are ‘doubtful ; when lowered by the Ys the needle some- times leaps 2° or 3°. (Observer W.) October 9. 1843. Needle No. 1. This observation was considered fair till the last reading, which might have been taken at any thing from 73° to 75°. Same date. Needle No. 2. A fair observation ; some of the readings, however, were not certain to about 5’. The observations were, in general, so unsatisfactory, that they were discon- tinued till Nov. 20; afterwards observations were made, which were, in general, more satisfactory. 81. Observations were made on April 18 and May 2, 1843, in different azi- muths, in order to determine the correction due to the irregularity of the needle’s axle, or perhaps to the presence of iron in the vertical circle; these observations have been already given (Table 21. and Table 22, Introduction, 1841-2.) The correction deduced was about — 11’ for needle No. 1. No correction has been applied to the results in this volume. 82. In 1846, the vertical circle was removed from the instrument and placed horizontally, the dip needle was suspended by a silk fibre within the circle, the needle and circle being in the same plane, the needle was then vibrated horizontally, and the zero of the graduations was placed in different azimuths ; the time of vibra~ tion was found very little affected by the varying positions of the circle; it seems probable, therefore, that the correction above is due solely to the imperfections of the axle. § 9. BAROMETER. 83. The barometer is by NEwMAN. ‘The tube is 0°552 inch in diameter; the scale is attached to a brass rod, terminating in an ivory’ point, which, at each obser- vation, is made to meet its image in the mercury of the cistern; the cistern is about 3 inches in diameter ; the vernier professes to read to 0-002 inch, and that 0-001 may be estimated, but the graduation is so inexact as to give changes in error from 0:002 to 0:003 inch. The barometer was compared indirectly with the standard of the Royal Society, by means of one made by NEwMAN for the DUKE of ARGYLE. The comparisons of the DukE of ARGYLE’s barometer with the flint and crown glass standards of the Royal Society are given Table 23, Introduction, 1841-2; they are not consistent ; the mean gives : Correction of the DuKE of ARGYLE’s standard barometer to those of the Royal Society = — 0:009 inch. lvi INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. A consistent series of comparisons of the Makerstoun standard with the DuKE of ARGYLE’s standard, given Table 24, Introduction, 1841-2, gives the mean - Correction of the Makerstoun standard barometer to the standard belonging to the DvuKE of ARGYLE = — 0-003 inch. whence Correction of the Makerstoun standard barometer to the standard barometers of the Royal Society = — 0:012 inch. 84, All the observations are corrected to the Royal Society’s .standard baro- meter, and for temperature by ScHuMACHER’S Tables, given in the Report of the Committee of Physics of the Royal Society. The cistern of the barometer is 213 feet above the mean level of the sea at Berwick-upon-Tweed. (See No. 1.) § 10. THERMOMETERS. 85. The dry and wet bulb thermometers are by ADIE and Son. The bulbs are 0-3 inch in diameter, and tenths of a degree can be estimated on the scales ; they are placed four inches apart on a wooden slab, the bulbs projecting below it. The slab was placed in the middle of a wooden case, the sides and top of which were formed like Venetian blinds, the case was open below and on the side next the Observatory ; the thermometers, which were read from within, were about 9 inches distant from the west window on the north side of the building. As the thermome- ters were subject to the effect of radiation from the interior of the Observatory, the slab carrying them was, after January 24. 1843, fixed to the front of a wooden case with a slightly projecting top and sides, and with a double sloping back, the ther- mometers being 4 feet from the ground; the case revolves on a post, and can be turned from within the Observatory by means of cords and pulleys. When an ob- servation is made, the case is turned till the thermometers face the window, being 9 inches distant from it ; after reading, which is done through the glass (thus avoid- ing any source of error due to the proximity of the observer, or the light at night), the case is again turned till the thermometers face the west if the sun shine in the morning, the east if it shine in the evening, and the north at all other times, unless it rain, when the back of the case is turned to the wind, if any. Holes were cut in the front of the case immediately behind the bulbs of the thermometers, in order to give a free circulation to the air around them, and to prevent any effect from the different temperature of the wood; a small projecting ledge below carries the cis- tern of the wet bulb, and prevents, to some extent, the effect of radiation from the soil on the thermometers. It was found, early in the summer of 1843, that, in spite of all precautions, when the sun shines strongly before 7 4.M., or after 5 p.M., the — thermometers are visibly affected by it. A moveable front, to which the thermome- ter slab was attached, was accordingly placed on the case, and, in the morning or THERMOMETERS. lvii the evening when the sun shone, the front was removed and suspended at an equal height, on the west or east wall of the Observatory, being kept apart from it by pro- jecting pins. Observations at different times shewed that, all other things being equal, the temperature was the same in all the positions ; but when the sun shone it might be one or two degrees less to the east or west than to the north. 86. It sometimes happens when the air is very humid during frost, especially when the temperature is falling, that the dry bulb thermometer reads less than the wet bulb; when such is the case the readings of the wet bulb have not been printed in this volume, and in the summations for the abstracts the readings of the thermo- meters are considered as the same.* 87. The maximum and minimum register thermometers, on RUTHERFORD’S con- struction, were made by ApIE and Son. Before January 24, 1843, they were placed 4 feet from the ground, near the east window, facing the north, and were protected from the sun’s rays in the morning and evening by projecting spars of wood, After January 24 they were placed on the same board with the dry and wet bulb thermo- meters, 5 feet from the ground. 88. The following table contains the corrections of the thermometers to a standard thermometer by NEwMAN. The comparisons were made in melting ice or snow for the freezing point, and in water at different temperatures. This table also contains the correction for the bifilar and balance thermometers, which have not been applied (see No. 33). TABLE 23.—Corrections of Thermometers to the Standard by NEwMAN. Bifilar (Ross).| Balance. ° — 0-1 —0-1 —0-1 —0:3 —0:5 —0-5 — 0-4 — 0-3 —0-3 — 0-2 —0.1 —0-1 * The cause of this apparent anomaly, it is conceived, is this, that the moisture deposited on the silk cover of the wet bulb is frozen as it is deposited, until it becomes a thickish coat of silk and ice; the mer- cury in the bulb will thus, following the falling temperature of the air, contract slowly, and will be less affected by any evaporation proceeding on the outer surface of the coat; on the dry bulb, however, the frozen moisture is but a thin film, as the bulb is generally dried between the observations, it will thus be easily affected by any evaporation, and become, in fact, a wet bulb thermometer ; it might be ad- visable, therefore, instead of rejecting to substitute the readings of the wet bulb for the dry, and the readings of the dry bulb for the wet, MAG. AND MET. oBs. 1843. p lvili INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. No correction has been applied to the observations of the dry and wet bulb thermometers ; the observations of the maximum and minimum register thermome- ters have been corrected, and all the abstracts of results for the dry and wet bulb thermometers. § 11. Rain-GavuGEs. 89. The rain-gauge (A) is placed in a space, enclosed by a paling on the top of the Observatory hill, with a good exposure on all sides. The funnel mouth is 6-1 inches in diameter, 8 inches above the soil, and 218 feet above the level of the sea. The quantity of rain is measured at noon by pouring it into a glass tube, graduated with reference to the aperture of the funnel. 90. The monthly results of two other gauges are given in the abstracts. One (B) is placed on the top of the greenhouse roof, 680 feet NNE. of the Observatory gauge; the funnel mouth is 6°7 inches in diameter, it is connected with a graduated tube within the greenhouse, it is 18 feet from the ground, and 192 feet above the level of the sea. This gauge is sheltered to the E. and NE. by trees, and its indica- tions are therefore less trustworthy, especially during easterly winds ; the amount of rain received in the funnel is also affected by the gusts of wind deflected from the sloping roof. 91. The other gauge (C) is in the middle of the Makerstoun garden, with a good exposure ; the funnel mouth is 6°7 inches in diameter, is 64 feet above the soil, 171 feet above the level of the sea, and about 620 feet N. by E. of the Obser- vatory gauge. The funnel is connected with a graduated tube. The greenhouse and garden gauges were observed by Mr MaceGAt., the head-gardener. § 12. ANEMOMETER. 92. The anemometer consists of two separate parts, both made and erected by ADIE and Son; one gives the direction, the other the pressure, of the wind. 93. The vane is placed on the north wall of the Observatory, and, by means of a rod and geering-wheels, it indicates the direction of the wind on a dial-plate within the building. 94. The anemometer proper, the invention of Mr R. AprE of Liverpool, is placed at the north-east corner of the Observatory. This instrument will be best understood by a reference to the annexed figure ; a is a cistern containing water to the level 6, ¢ being a turn-cock for letting the water off to the exact level, and da glass gauge to shew when the water becomes too low, from evaporation or other- wise ; an inverted vessel ¢ is suspended in the water by a cord passing over the wheel f, whose axle rests on friction-rollers at g and h; 7 is a spiral which has.a — cord wrapped on it carrying a weight &, which balances the vessel e; / is a dial, graduated on the face near the cireumference ; m an index, attached to the common — ANEMOMETER. lix axle of the wheel and spiral; n a loose index under the index m, which the latter carries forward by means of a projecting pin near the extremity ; 0 a tube passing under the cistern a, which, entering the bottom, proceeds upwards within the vessel e till its open extremity is above the level of the water in a neck of the vessel e; the other end of the tube 0 is six feet above the outer wall of the observatory, where it is capped by a vane p; at the top of the tube o three brass rods are joined, which carry a small tube in which a pin within the top piece qg vests or turns; the tube o is double at the top, containing between the tubes a quantity of mercury to the level r, the continuation of the cylindrical body of the vane enters the mercury, and a double portion s acts as an outer cover to the mercury cistern, ¢1s an aper- ture, 2 inches square. When the wind blows, this aperture is presented to it, the wind then presses on the column of air within the tube o \ (being prevented from escaping under the \ vane by the mercury), and ultimately on the | top surface of the vessel ¢, forcing the latter up, turning the axle carrying the index m, which carries before it the index n, leaving it at its farthest excursion. The dial is gra- duated as follows :—The surface of the top of the vessel e on which the wind presses is 78 square inches, therefore a pressure of 1 lb. on this surface is equivalent to 144 Ib. on a square foot. Different weights are suspended on the wheel f, acting oppositely to the vessel e, and the position of the index for each weight shews the pressure on a square foot of sur- face equal to the weight suspended multiplied er by the above ratio. The spiral, on which the burrs weight & acts, is the involute of a circle whose \ /s ‘ nt peer i ‘ ’ XN S SS / - a tte ‘ see Geese ; R , ‘ radius r= oe where R is the radius of the wheel f, and 2 7 is the circumference to radius of one, if the vessel e were homo- geneous throughout its depth, the equal increments of motion in the index would correspond to equal increments of pressure.* * The application of the involute of the circle as the spiral is due, I believe, to Professor Forsss. It is easily shewn that if the vessel ¢ be homogeneous, w being the weight of a ring whose depth is one Ix INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. 95. The instrument is observed in the following manner :—A bout 2™ before the observation hour the pressure shewn by the index n is registered as the maxi- mum pressure ; this index is then put back to zero, and from 7™ to 10™ afterwards, the position to which it has again been carried by the index m is noted as the pre- sent pressure: the index n is then set to zero, and a similar double observation made at the next observation hour, 96. It is conceived that this instrument is trustworthy. It is occasionally, however, liable to shght derangements ; the cup at the top containing mercury fills with rain, which, when frozen, prevents the vane from turning its aperture to the wind. § 13. STATE oF THE Sky. 97. The quantity of clouds is estimated, the whole sky covered with clouds being noted as 10, the complete absence of clouds being zero. The motions of the clouds are estimated as follows :—A well marked portion of cloud which passes through, or nearly through, the zenith, is watched till the direction is found in which it seems to run down, or parallel to, one corner of the Observatory ; this direction is then estimated very nearly, as the walls are in the meridian and prime vertical. About the end of 1843, the points of the compass, with reference to each corner, were marked on the paling surrounding the Observatory. I have no hesitation in saying, that the motions of upper currents of air thus observed are much better de- termined than the motion of the lower or surface current by the vane. 98. The nomenclature adopted is that of Mr Howarp, with certain combina-~ tions, which are, in general, sufficiently descriptive. The term scud refers to that loose, generally amorphous, and often rainy cloud, which is the lowest of all except- ing the stratus. § 14. CLock, Stove, AND CompuTING Room. 99. The mean time clock in the Observatory is by DENT of London ; it is kept at G6ttingen mean time by means of comparisons with the transit clocks in the Astronomical Observatory, the errors of which are determined by Sir THomas BRISBANE, by myself, or my assistant. The rate of the mean time clock is kept small by placing small weights on, or taking them off, the bob of the pendulum. inch, P the pressure which the wind exerts on the top of e¢ diminishing its weight, 6 the corresponding arc through which the circumference of the wheel f moves (or the length of cord wrapped on the wheel), W the weight of the counterpoise &, and o the specific gravity of the material (zinc) of which ¢ is formed, then a constant ratio. DESCRIPTION OF THE TABLES. Ixi 100. A copper stove occupied the position S in the plan (Plate I.), and was lighted every day from January | till March 15, 1843, with one exception, namely, on January 23. It was only lighted three times again in 1843, namely, on Octo- ber 19, November 25, and December 21, as it tended to increase the diurnal range of temperature, and to create aérial currents within the Observatory. A small brick building was erected 24 yards to the east of the Observatory, which was occupied after March 16 as a computing room. It was determined that the bricks at that distance had no effect on the reading of the declinometer. § 15. DESCRIPTION OF THE TABLES OF OBSERVATIONS. Daily Observations of Magnetometers, pages 1—28. 101. The first column contains the Gottingen mean time, astronomical reckoning, of the observations of the declination magnetometer. Gdttingen time is 49™ 50° in advance of Makerstoun time. The second column gives the absolute westerly declination in degrees, minutes, ‘and decimals, deduced as described, No. 23. The third column contains the observations of the bifilar magnetometer in scale divisions, corrected for temperature to 26° Fahr., see Nos. 39 and 45; increasing numbers indicate increasing force. The bifilar is observed 2™ after the declination. The fourth column contains the temperature of the bifilar magnet in degrees of Fahrenheit. The fifth column gives the readings of the balance magnetometer in microme- ter divisions, corrected for temperature to 26° Fahr., see No. 58 ; increasing num- bers indicate increasing force. The balance is observed 3™ after the declination. The sixth column contains the temperature. of the balance needle in degrees of Fahrenheit. 102. At the foot of each page are given the declinometer torsion-circle readings for the torsion eliminated. A comparison of any one reading with the previous read- ing will give the number of degrees of torsion introduced between the two periods ; 10° of torsion introduces an error into the observations of 0-9 ; references are made to footnotes, which at times indicate the cause that has produced the torsion, and the period that it may have existed. The value, k, of one scale division of the bifilar magnetometer, the whole horizontal force at Makerstoun being unity, is also given, together with the approximate value, k, of one micrometer division of the balance magnetometer, the whole vertical force being unity, obtained as in No. 55. The value used in the abstracts differs considerably, and is k = 0:000009. The obseryer’s initial will be found at the same date of the meteorological ob- servations. MAG. AND MET. OBS. 1843. q Ixil INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. Term-Day Observations of Magnetometers, pages 29—48. 103. The first column contains the minute in Gottingen mean time of the de- clination observation. The hour is given in the middle of each triplet of columns. The second column gives the absolute westerly declination in degrees, minutes, and decimals. The third column gives the bifilar magnetometer mean scale readings, corrected for temperature to 26° Fahr. The observations are made 2™ after those of the de- clination. The fourth column contains the balance magnetometer micrometer readings, corrected for temperature to 26° Fahr. The observations are made 3™ after those of the declination. 104. The readings of the bifilar and balance thermometers at the commence- ment of each hour are given, together with the initial of the observer during the hour, at the foot of each page. 105. The corrections for temperature are applied thus :—The first observation (at the commencement) of each hour is corrected for the difference of the magnet’s temperature at the hour from 26° Fahr., the corrections to the observations between the hours are then interpolated between the initial corrections. . Extra Observations of Magnetometers, pages 49—73. 106. These are observations made generally during magnetic disturbances. The same remarks apply with regard to temperature corrections, &c., as in the term observations, excepting that the Gottingen day and hour are given in the first column, and the minute is given for the observations of each instrument. 107. The observations of magnetic dip and absolute horizontal intensity require no other explanation than will be found in sections 4 and 8. Daily Meteorological Observations, pages 86—197. 108. The first column contains the Géttingen mean time, astronomical reckon- ing, of the observations, all of which are made within a few minutes of the hour, and generally in a certain order. The Gottingen time is 49™ 50° in advance of the Makerstoun time. The second column contains the readings of the barometer cor- rected for temperature, and to the Royal Society’s standard barometers. See No. 83. The third column gives the observed readings of the dry bulb thermometer in degrees Fahrenheit. The fourth column contains the observed readings of the wet bulb thermometer, The fifth column gives the differences of the readings of the dry and wet bulb thermometers. The sixth column contains the readings of the maximum and minimum register thermometers, corrected by the quantities in Table 23. The minimum temperature of the night, read at 9 A.M. Makerstoun mean time, is immediately preceded by the maximum of the previous day, read at the same time. DESCRIPTION OF THE TABLES. Ixiii The seventh column gives the readings, in inches and decimals, of the Obser- vatory rain-gauge, made at noon. The eighth column contains the maximum pressure of wind on a square foot of surface which has occurred since the previous observation, No. 95. The ninth column contains the greatest pressure which occurs within 10 minutes at the time of observation ; titled the present pressure; this 1s sometimes higher than the maximum previously recorded. The tenth column gives the point of the compass from which the surface-wind blows, as observed on the vane-dial. The eleventh column gives the points of the compass from which the clouds move, observed as described No. 97; when there are more motions than one ob- served, the motion of the lowest stratum of clouds is placed first, that is to say, next to the motion of the surface-wind in the tenth column ; the motion of the next higher stratum is separated from that of the lower stratum by a colon (:), and so with those higher still. Thus, July 12* 18", while the motion of the surface-current was pro- bably, from WSW., the lowest stratum of clouds moved from NW., the next higher from NNW., and the highest clouds from SE. by S. * The twelfth column gives the estimated quantity of the sky covered with clouds, or the estimated surface of clouds compared with that of the whole hemisphere, the latter being 10. 109. The page opposite to these columns contains the species of clouds and general observations on the state of the sky or weather, as observed immediately after the observations of the meteorological instruments. The clouds whose motions have been defined are placed first, commencing with the lowest, and when several motions have been observed the strata are separated, as the directions are in the eleventh column, by colons (:); thus, in the above example, July 124 18". Scud moved from NW., cirro-cumulous scud from NNW., and cirri from SE. by 8. When the directions in which any clouds move have not been determined, these are separated from the others by a cross ~~; in the previous example there was a thick mass of cirrous haze and cumulo-strati to E., whose motion was undetermined. The initial of the observer is given last ; and as the same person makes the magnetical and meteorological observations, the initials serve for the magnetical observations at the same hours. Term-Day and Extra Meteorological Observations, pages 200—217. 110. These observations are made, during the magnetical term-days, at the solstices and equinoxes,* and on other occasions. * The observations at the solstices and equinoxes were forwarded by Sir THomas BrisBANnE to M. Querexet of Brussels, and have appeared in his collection of ‘* Observations des Phénoménes Pério- diques,’’ Mémoires de l’ Académie Royale de Bruxelles. lxiv INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. The columns are the same as in the daily meteorological observations, except- ing that the columns for the maximum and minimum thermometers are awanting. ABSTRACT OF RESULTS, pages 219—305. 111. These Tables have appended or prefixed to them all requisite explana- tions, together with remarks on the conclusions deduced. It may be mentioned here, also, that in the Tables of Abstracts for the Magnetical Observations, summer consists of the months of May, June, and July, while, in the Tables of Abstracts for the Meteorological Observations, summer consists of the months of June, July, and August. Curves of the Term-Day Observations after page 306.. 112. The term-day observations have been projected and printed by a new process, which, as it may be of use in other cases, it may be desirable to describe here. Having obtained a sufficient number of lithographed copies of the curve paper, the observations were projected with the greatest accuracy, and the lines drawn with lithographic ink, by Mr WetsH ; from these drawings the copies in this volume were obtained by the Anastatic process. The advantages of this method are, 1st, the accuracy with which the observations are at once projected from the original obser- vations (instead of being copies merely) ; 2d, that the curve paper has only to be drawn once for all the curves ; 3d, that the expense is considerably less. The curve paper was prepared, and the curves were transferred by Mr R. APPEL, lithographic and anastatic printer, Ipswich. GENERAL REMARKS. 113. It is perhaps desirable that some reasons should be given for the methods of reducing and printing the magnetical observations adopted in this volume. 114. The westerly declination has been given in the common units, degrees, and minutes, because the units ae common; as it is as easy to give the variations of declination, with reference to the astronomical as to any other meridian, the printed observations are all absolute. They are thus at once comparable with all other observations which have been, or may be, reduced to the common units. 115. The bifilar and balance magnetometer readings are given in scale and micrometer divisions respectively, because no common unit of force has been yet agreed on, and because, in the case of the balance magnetometer, I had every reason to believe that an accurate value of the micrometer divisions had not been obtained, The results have been converted into parts of force, because it was necessary for con- clusions on the variations of the total force and of the dip. If, however, the unit at different places must be variable, it seems desirable that it should be the same at the same place for the horizontal and vertical components and for the total force, POSTSCRIPT. Ixv 116. The observations of both the force magnetometers have been corrected for temperature, it is conceived, with a considerable approximation to accuracy ; but not wishing to dogmatize in the use of a new mode of determining the temperature co- efficient, I have, with Sir THomAs BRISBANE’S leave, printed in all cases the tem- peratures of the magnets. In this, as in some other cases, I have preferred giving what may seem at present too much, rather than any one should afterwards have reason to find that I had given too little. 117. All the reductions have been made by my present assistants, Messrs WELsH and Hoce, and by myself. Hach computation has been performed twice, and that generally by ditferent individuals. Maxersroun, Jume 1846. POSTSCRIPT. Value of the Scale Divisions of the Bifilar Magnetometer in parts of the whole Horizontal Force. 118. A consideration of the theory of the bifilar magnetometer will shew that it is assumed that the suspending wires do not act at all by any elastic force ; that, in fact, the force opposing the magnetic force is the resolved portion of that due to the weight suspended endeavouring to gain its lowest point, and, therefore, that if w be any angle from the magnetic meridian to which the magnet is deflected, the corre- sponding torsion of the wires being v (No. 35.), then = is a constant ratio. If the assumption fail, there will be every reason to doubt the accuracy of the coeffi- cient k, which depends on sin v and its difference. Any considerable error was not suspected ; but the method described in the note, pages 2 and 3, having been found to answer so well for the determination of the coefficient for the balance needle, there was little doubt but that it would succeed much better for that of the bifilar magnet. Experiments were accordingly made when the previous Introduction was nearly through the press. 119. If the equation of equilibrium for the bifilar magnet when at right angles to the magnetic meridian be (No. 35.) a and if a magnet, whose moment is M, be placed in the magnetic meridian, with its centre in the continuation of the bifilar magnet when at right angles to the magnetic meridian, and at a distance 7 from its centre, the resulting angle of deflection being Av, equal n scale divisions, the equation of equilibrium will be (see the note already referred to), cM x7? m (x + ) cos Av=f” MAG. AND MET. OBS. 1843. , Ixvi INTRODUCTION TO THE MAKERSTOUN OBSERVATIONS, 1843. where f’ is the force opposed to the magnetic force. For a horizontal force X’, which would alone have brought the magnet into this position the equation would have been m X' cos Av=f" whence Wa Ko and >. >. Gear->: Ga 2 a Pi Mas Ker oe KX ane eS u being the deflection of a freely suspended magnet produced by placing the deflect- ing bar at right angles to the magnetic meridian, with its centre at a distance 7, from the centre of the suspended magnet. As k is the value of — for one scale division _ 7° tan u* on ee Den 120. The results of the experiments made on two days, and at a different dis- tance on each day, are, First day, 4=0°0001021. Second day, =0:0001025. The value of & from the formula, k=a cot v, being k=0-000125. This difference is very considerable, so much so, that even though again delaying the publication of the Observations for 1843, I have determined to go over the various reductions in the abstracts, with the coefficients derived from the above in the following manner :— k being the coefficient given in Table 11, the coefficient used in the reductions in the abstracts of results is obtained from it in multiplying by 1922 =0-8184; 0:0001023 being the mean value of & obtained by deflections, and 0-0001250 the value of obtained from the formula k=a cot v. The coefficients used are therefore as follow : Jan. 14—April 274 1843, &=0-0001021, April 28 —Nov. 8 1843, =0-0000986, Nov. 10 —Dec. 31 18438, 4=0-0001064. * It is obvious that the investigation for the balance magnet might be made in this way with ad- vantage, the final equation in the note, p. xxxvi, would then stand thus— tan wu r> ° 2ntanO— Maxkerstoun, August 1846. DAILY OBSERVATIONS OF MAGNETOMETERS. MAKERSTOUN OBSERVATORY, 1843. MAG. AND MET. oBs. 1848. 2 DaAILy OBSERVATIONS OF MAGNETOMETERS, JANUARY 1—18. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of DECLINA- || ————-————__||_——__ Mean Time of DEcLiINA- = ||—_—____ Declination TION. Cor- |Thermo-|} Cor- |Thermo Declination TION, Cor- |Thermo-|| Cor- /|Ther Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. |] rected. | met da oh m. o 4 Se. Div. 2 Mic. Div. © d. h. m. 2 ‘ Se. Div. Y Mie. Diy. ° Jan. 1 20 0O|| 25 29.88 533-4| 36-1 740-0| 36-7 | Jan. 11 20 O]] 25 23-43 535:0| 47-3 || 778-1! 50 23° 10 29-51 533-8| 41-0 || 765-2} 42-0 22 0 23-04 532-2} 46-0 || 785-0! 49 Jan. 2 2-0 29-62 530-0] 49-8 || 778-2} 50-2 }Jan. 12 0 O 25-63 533-6} 50-0 || 782-9] 53: 5 60 25-04 536-6} 53-9 || 846-6] 54-9 2 0 25-85 540-0} 52-1 || 773-5| 54 4 0 24-18 538-8| 53-8 || 771-4| 56 20 O}] 25 23-16 528-2| 33-7 || 750-2] 35-5 6 0 23-77 536-1] 51-3 || 773-4 |) Sa 23 0 30-43 532-1| 43-0 || 785-8] 45-0 8 0 23-59 538-5| 52-7 || 782-0] 55 Jan. 3 2 O 28-72 540-6| 50-2 || 783-9} 51-4 10 O 21-44 537-1} 53-3 || 786-2| 56 5) (0) 27-00 539-9| 50-7 || 789-8] 51-8 ; f 20 O|| 25 22-69 535-3 | 43-3 || 768-2) 45 20 O]] 25 26-75 534-8| 48-7 || 785-4] 51-4 220 22.42 534-3 | 45-5 || 772-0] 47 23 0 26-72 531-8] 49-0 || 787-4] 50-5 | Jan. 13 0 O 25-56 534-4| 48-0 | 775-4) 49 Jan. 4 2 0 29-28 536-:0| 51-8 || 789-8] 52-8 aaa 27-44 539-9| 52-6 | 773-7| 54 5 (0 27-71 540:5| 54-9 || 783-6] 56-0 4 AOU as tonweers 538-4| 52-8 | 782-5) 53 6 0 24-45 537-9| 51-7 || 778-4| 52 20 O]| 25 26-77 537-4] 48-8 || 774-9] 51-0 8 0 27-29 539-6| 52-7 || 782-1| 54 237 0 27-76 530-9| 49-5 || 780-8] 51-7 10 O 24-11 540-4} 53-5 || 787-3] 55 van. 75) 2/0 29-15 541-8] 56-3 || 778-9] 59-0 a 0 27-74. 535:3| 52-6 || 785-6| 54-8 90 O|| 25 24-98 536-4| 46-9 || 775-3] 49 ; 220 23-79 529-8| 45-4 || 781-2} 47 20 0|| 25 27-02 || 533-8] 45-0 | 773-4} 47-31 Jan. 14 0 0 26-79 || 531-8] 49-9 || 789.2] 58 23 0 28-39 529:0| 45-4 || 759-0] 47-0 2) 0 98-18 540-9| 54-4 || 783-6] 56 Jane 6022) 00 29-93 541-2} 52-8 || 786-7] 54.4 4 0 96-32 541-6] 55-6 | 775-1] 57 5 0 26:33 546:0| 59-7 || 786-9} 59-7 6 0 25-32 539-1| 52-1 || 780.8! 54 8 0 25-34 536-4| 51-0 | 784-9] 53 20 O|] 25 23-44 538-7| 49-9 || 773-5] 52-0 10 O 24-77 535-3 | 52-1 || 788-3] 54 23 0 25-27 538-3] 52-8 || 785-2] 55-2 Jan. 7 2 0 27-38 || 541-2| 53-9 || 767-2| 55-6 | Jan. 15 18 0|| 25 23-68 || 538-1] 42-3 || 768-4| 44g 5 0 24-33 539-2] 54:5 || 755-5| 54-8 20 O 25-81 542-9| 47-1 || 761-5| 48 f 22" 0 24-99 537:9| 46-8 || 766-5] 48 Jan. 8 20 O]] 25 24-15 533-6] 33-8 || 739-9] 34.8 | Jan. 16 0 O 28-52 540-0} 48-9 || 766-9} 500) 22, 0 24-13 Dd0°d| 30-1 758-3| 36-3 0 33-10 546-4| 51-8 || 766-0] 53am } Jan. 9 O O 26-26 539-6| 43-3 || 763-0] 45-0 4 0 29-26 547-3| 54-9 || 775-5| 5647 2 0 29-33 555-5] 53-1 || 801-1] 56-6 6 0 26-05 547-6| 53-7 || 775-6 Bi 4 0 26-57 538-4] 50-0 || 733-3} 49-5 S40 25-11 544-2| 54-0 || 773-6] 58 6 0 25-93 541-5] 49-5 || 760-3] 48-5 10 O 24-01 543-1] 54-2 | 773-0] 56 8 0 25-32 540-7| 50:3 || 782-9] 51-7 : 10 0 23-27 544-1] 56-5 || 778-2| 57-9 18 0O|| 25 26-22 || 539-9] 50-0 | 771-3] 59 20 O 24-77 545:9| 55-3 || 770-6| 58:8 20 O]] 25 24-77 531-9] 46-4 || 757-8} 46-8 PP) 25-18 538-7| 53-8 || 766-6] 5m 22 0 25-41 532:0| 46-5 || 770-8} 47-8 {Jan. 17 0 O 26-06 537-2| 53-1 767-8} 5 Jan. 10 0 O 26-79 535-6| 48-8 || 775-8] 50-5 2 0 27-61 539-0| 54-0 || 770-5 G p (0) 28:03 540-1} 50:8 || 775-0] 53-0 4 0 27-47 542-7] 58-3 || 778-2 4 0 25-96 542-1} 54-0 || 771-8] 56-8 6 0 26-73 532-2} 56-0 || 790-0 6 0 26-01 539-3] 51-9 || 785-1] 54-0 8 0 23-90 538-1| 56-2 |) 785-5 8 0 23-39 541-4] 51-8 || 785-5] 54-4 10 O 22-74 537-9| 56-8 || 782-5 10 0O 22-72 542:0| 53-6 || 786-6] 56-5 18 Oj] 25 23-98 540-8| 55-2 || 767-5 20 O|| 25 23-26 538-5] 49-9 || 827-1] 52-5 20 O 24-08 541-0} 56-4 || 774-6 22) 10 23-29 535-8] 49-4 || 778-4] 52-2 2220 23-88 536-1} 56-9 || 769-8 Jan. 11 0 5 25-76 534-0] 49-2 | 778-1] 51-5] Jan. 18 O 7 27-49 534-0} 57-4 || 771-4 2 0 26-72 545-3} 53-8 || 785-2] 56-0 20 28-35 538-7| 57-7 || 771-4 4 0 26-20 542-3| 52-9 || 759-3| 55-5 4 0 27-16 540-5] 57-2 || 780-4 6 0 25.48 540-6} 52-1 773-2| 54-2 6 0 25-56 541-1} 57-6 || 777-4 8 8 23-01 527-0| 52-7 || 834-4] 54-9 8 0 29-33 537-5| 57-7 || 774-8 10 0O 22-06 531-4] 52-6 || 811-0] 55-7 10 O 27-36 533-5} 56-8 || 781-8 DECLINATION. Torsion removed, circle reading,—Dec. 204 1842, 168°; Jan, 24 21h, 194° ;* 64 6h, 224° ;* 94 21h, 249°; 134 2h, 2°; 164 23h, 14°, BIFILAR. k=0:0001248. BALANCE. k=0:000015 approximately. * Jan. 2d 21h. It is probable that this change in the plane of detorsion was produced in taking out the magnet in order to make the Dip observation ; if found ultimately that two fibres of the suspension thread had been broken. It is conceived that one fibre had been broken in taking out the magnet, and other on replacing it, from the great change of torsion found on January 6. + Jan. 134 2h 30m, After an observation for the value of — the broken fibres mentioned above were withdrawn, and the torsion eliminated. Jan.1740b. The Declination observation was 20m late on account of the torsion being removed from the suspension thread. DaILy OBSERVATIONS OF MAGNETOMETERS, JANUARY 18—FrEpruary 1. 1843. | Gottingen Mean Time of Declination Observation. dh. m. 18 18 20 22 19 0 2 n. n. 20 O 2 21 0 he 22 . 23 0 a 24° 0 25 DECLINA- TION. 25 27-81 27-98 27-78 29-83 31-99 30-00 29-04 27-85 25-48 27-29 27-40 27-17 30-55 32.02 31-73 29-95 29-62 28-27 29-36 29-08 28-57 30-48 29-69 27-00 25 25 25 25 25 Cor- rected. Se. Div. 538-5 536-2 532-5 529-3 533-4 542-1 540-7 538-0 533-4 537-2 538-7 533°3 539-7 532-5 540-7 538-3 536-8 537-6 536-4 ween BIFILAR. Thermo- meter. Cor- Mice. Div. 755-8 747-7 763-3 771-8 775-1 780-8 767-9 758-1 769-4 773-1 774-3 775-5 777-0 776-9 776-2 779-7 773-1 774-9 778-8 778-9 776-9 775-6 774:0 7748 776-1 771-6 765-7 een eee BALANCE. Thermo-} rected, | meter. | Gottingen Mean Time of Declination Observation. DECLINA- TION. 25 25:27 24-87 24-06 27-22 28-94 26-48 25-76 24-10 22-62 24-33 24-77 25-27 28-28 29-31 26-55 26-35 25-66 25-41 21-31 24-11 23-95 32-72 29-75 29-31 26-66 20-87 20-88 24.48 25-34 22-94 26:67 28-54 25-59 24:55 24-10 22-69 25 25 25 25 23-39 24-35 24-00 25:88 26-79 25:39 24-48 25:31 24:04 25 24-03 24-28 25-43 26-94 27-14 24-74 25-41 24.47 23-95 Ssecoooceocoo coscoosecoeoeoes coceoeecoeoeos coeeoeoeses eoeoeooooCcCo eo coco CoCcC OS® BIFILAR. BALANCE. 3 Cor- rected. Se. Div. 537-4 537-9 530-9 531-6 535-7 537-6 538-3 529.9 534-7 540-9 540-5 534.2 536-5 540-3 542-1 541-5 543-4 539-5 538-9 539-6 535-4 531-3 537-2 539-9 526-5 524-2 533-1 540:6 535-4 531-7 533-3 532-2 542.9 534-9 533-4 537-1 538°8 535-7 536-0 530-4 532-2 538-3 531-9 536-6 537-8 532-6 538-2 534:5 535-3 536:3 539-2 535-5 537-2 535-9 Thermo- meter. ° 07-8 Cor- rected. Mic. Div. 757-9 760:3 765-5 769-8 759-1 765-9 762-0 768-2 769-1 752-1 751-2 756-6 764-2 757-7 756-9 753-9 747-8 746-5 711-5 744-8 758-4 758-2 795°5 765-2 859-4 842-0 805-2 723-1 751-6 756-6 755-9 770-1 767-4 767-3 772-1 768-4 754-3 797-9 762-4 764-1 765-8 764-1 758-8 Thermo- meter. 61-0 60-3 60-0 60-8 61-4 61-0 61-0 60-5 62-6 DECLINATION, Torsion removed, circle reading,—Jan. 234 23h, 4°; 284 3h, 18°; 304 23h, 18°. BALANCE, ‘k=0:000015 approximately. BIFILAR. k=0°0001248. Jan. 314 6h 30™, Declination reading 25° 1788. 4 DaILy OBSERVATIONS OF MAGNETOMETERS, FEBRUARY 1—15. 1843. Gottingen BIFILAR. BALANCE, Gottingen BIFILAR. BALANCE, Mean Time of DEcLINA- || ——_——_—_ i Mean Time of DEcLINA- |}_——___—_—_ Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-|} Cor- |Ther: Observation. } rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | mete San WP Se. Div. ° Mic. Div. 25 22-02 || 536-3 . 743-6 24-64 || 536-5 : 753-4 23-97 || 528-9 . 759-9 28-00 || 529-4 : 753-2 30-79 || 533-0 : 754-8 29-51 535-7 : 771-5 29-48 || 530-5 . 740-4 25-75 || 537-5 : 765-6 25:09 || 535-4 : 767-1 26-20 |) 532-1 . 755-4 26-08 || 539-2 . 749.2 24-78 || 532-6 : 756-1 28-64 || 535-2 : 752-3 30-13 || 534-5 : 761-5 28-72 || 540-2 : 757-5 25-54 ||) 539-7 : 764-2 22-27 || 536-5 : 767°5 24-77 || 541-1 756-9 24-40 |) 536-8 744-8 24-64 || 537-4 . 754-9 23-46 || 527-8 . 739-6 26-69 || 533-0 . 740-4 530-1 . 737-8 534-9 : 724-2 535:5 : 727-8 541-2 : 739-0 541-7 . 743-7 535-7 : 721-1 549-0 B 728-7 535-1 : 735:3 536-1 . 733-3 539-6 . 731-6 541-8 : 751-0 536-5 . 765-4 541-5 : 760-0 531-1 770-0 531-0 728-0 529-9 : 697-7 538-1 : 724-6 535-8 : 741-8 761-1 776-4 533-0 . 778-1 773-0 756-9 742-5 751:3 750:0| 44:0 743-3| 4 740-2 75555 765-1 755-8 742.8 ‘ Se. Div. =~! Mic. Div. 25.02 || 538-5 . 765-4 -5 Feb. 24.37 537-8 . 760-4 24.64 534-1 . 767-4 25-95 || 538-0 . 770:5 ‘5 | Feb. 9 28-42 538-3 : 762-6 25-09 537-7 . 765-5 24.82 || 536-9 : 771-4 25-01 537-6 : 770-1 537-6 : 762-2 536-4 . 758-3 539-1 : 765-8 531-8 : 766-8 535°3 : 756-8 540-8 : 751-4 538-0 . 754-5 536-4 : 769-1 539-3 . 763-8 537°8 : 767-2 542-0 : 763-5 644-5 . 757-2 538-9 . 757-8 540-1 : 748-5 543-7 . 746-1 545-4 : 749-0 544-7 : 753-8 545-7 : 745:5 545-0 : 750-1 596-6 . 741-8 534-9 : 752-2 530-7 3 743-0 538-1 : 743-4 539-0 . 741-3 546-6 : 741-0 539-5 . 769-1 806-8 830-1 736-6 753-1 751-1 750-8 762-4 761:3 776-0 771-7 758-4 754-2 755-4 749-4 760-0 761-0 759-1 756-2 747-3 749-7 h d. “he i Feb. 1 18 20 22 | Feb. — bo oeooeoocoocoocooco scoscoocsecse sd DECLINATION. ‘Torsion removed, circle reading,—Feb. 34 102, 28°; 64 23h, 28°; 134 23h, 28°, BIFILaR. k=0:0001248. BALANCE. k=0:000015 approximately. Feb. 6419, Observation 1» late. Feb. 134 18h 22m, The Balance magnet vibrating considerably. Gottingen DAILY OBSERVATIONS OF MAGNETOMETERS, FEBRUARY 15—Marcu 1. 1848. Mean Time of Declination Observation. d. eb. 15 eb. 16 19 b. 20 b. 21 . 22 DECLINA- TION. —— 25 24.20 24-40 24.77 27-70 29-31 26:96 27-34 14-06 23-19 24-64 24:53 24:48 26:37 26-70 28-07 28:07 24-94 23-50 23-43 24-25 24-17 26-06 27-80 25:85 26-62 22-11 24:00 22-82 23-56 23-71 25-95 27-60 25:65 23-32 24.47 23-12 22-85 22.87 24:53 29:44 28-68 26-77 24.47 24:53 23-12 23-63 23-07 24-47 29-38 29-55 28:59 25-27 24-91 25-24 25 25 25 25 BIFILAR. Cor- |Thermo-|| Cor- rected. | meter. || rected. Se. Div. o Mic. Div. 530:0| 40-0 || 750-2 538-9} 44-9 || 750-1 533-4] 42-4 || 750-2 534:0| 46-1 744:3 543-3] 50-2 || 730-0 544-6] 52-7 748-7 542-0] 50-2 || 756-1 543-8 | 50-1 767-8 537°8| 50-3 || 760-6 533-1) 41-4 | 737-8 541-9} 45-2 || 743-7 541-:5| 46-4 || 742-1 539-1] 47-9 || 737-2 540-7| 53-0 || 742-8 541-1] 54-1 748-9 533-3} 51-8 || 770-2 540-8} 51-0 || 766-6 539-2) 49-4 || 758-4 529-3) 37-9 || 707-1 539-7) 41-3 752:8 530-5} 38-0 || 750-8 536-5] 44-5 741-6 541-:7| 48-8 733°3 542-9] 52-1 737°3 539-3] 51-9 || 745-0 540-8} 52-0 || 752-6 540:8| 51-1 746-8 530-1) 38-1 730°3 541-3] 43-0 734-2 536-4] 43-1 739:3 535-4] 47-0 || 732-4 535-7| 49-2 || 736-2 541-0} 50-1 745-4 530-9} 46-6 || 770-7 539:-4| 47-4 || 758-9 540-7 | 49-7 741-8 535-6} 45-9 || 741-2 538-4| 48-2 || 740-6 531:3| 46-8 740-2 531-9| 47-7 || 734-0 536-2] 50-0 737-3 541-0} 52-7 || 746-2 541-2} 51-7 || 745-8 541-0} 52-1 743-5 536-4] 51-9 741-7 537-:3| 49-5 740-1 538:0| 51-9 || 742-0 531-7| 50-2 || 739-7 533-1} 52-2 || 727-4 538-8} 53-0 || 733-7 536-8| 52-8 747-0 538-4] 51-4 || 749-4 542-5] 51-6 |) 749-5 538-7] 51-3 || 748-2 BALANCE, Thermo- meter. 42.6 47-9 45-1 48-6 51-8 54-0 51-5 52-3 52-7 Feb. Feb. Feb. Feb. Feb. Feb. Feb. Gottingen Mean Time of Declination Observation. 24 25 26 27 28 DECLINA- TION. ° 25 25 25 25 25 22-65 23-39 25-05 27-96 28-84 27-09 26-17 25-09 25-12 21-24 21-51 27-38 32.27 34-68 43-60 30-62 26-79 20-16 27-85 25-58 26-35 28-03. 28-70 27-70 27-19 25:95 16-40 25-68 25:41 26-25 27-67 27-56 25:52 24-74 23-86 24-60 23-81 23:19 25-95 31-93 28-86 25-46 24:67 23-93 23-93 23-06 23-53 24:06 25-34 26-66 25-95 24-60 24-60 24-20 Cor- rected. Se. Div. 535-3 539:8 535-3 535-0 540-1 540:6 543-2 540-1 538-3 544-1 BIFILAR. Thermo- meter. 47-3 50-2 49-4 49-6 51-7 51-7 50-8 50:3 50-5 50-8 50:8 49-7 50-7 51-1 51-7 52-0 52-9 52-7 53-4 53-8 | 53-0 52-9 53-1 | 52-4 51-3 52-2 53:0 42-7 43-6 44.2 | 47-0 49:5 51-7 50-2 48-9 48-9 43-9 46-8 45:8 46:7 49-8 51:3 50-3 50-1 49-3 44-6 44-6 44-2 45-7 51-2 52-1 51-0 49-1 49-2 Cor- rected. Mie. Div. 742-0 744-2 740-6 741-5 735-0 743-8 744-3 750-5 747-9 725-2 723-0 725:8 727-8 735-9 794-1 878-6 887-8 783-2 701-2 734-2 743-4 745-9 748-6 748-5 750-1 742-8 743-2 745-5 741-2 742:5 742-1 750-3 745-5 739-0 749-1 749-9 745-7 742-1 740-0 729-2 734-0 742-3 739-0 739-7 739-0 745-7 739-1 735-9 731-9 731-7 731-3 734-7 736-6 734-8 BALANCE. 5 DECLINATION. BIFILAR. MAG. AND MET. oss. 1843. Torsion removed, circle reading,—Feb. 204 23h, 28°; 274 23h, 28°, k=0:0001248. BALANCE. %=0-000015 approximately. 6 DAtty OBSERVATIONS OF MAGNETOMETERS, Marcu 1—15. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean time of DECLINA- Mean Time of DECLINA- ||——__———— Declination TION. Cor- |Thermo-|} Cor- |Thermo- Declination TION. Cor- |Thermo-|} Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. |) rected. | mete: doh. m. 3 ‘ Se. Div. ss Mice. Div. © ad) ch. ym. aT Se. Div ° Mic. Div ° | Mar. 118 O|| 25 29-67 540-9| 44-9 || 741-7| 47-3 | Mar. 8 18 0] 25 23-70 533-7| 47-3 || 754-9| 49.5 20 O 23-26 541-5] 45-9 || 736-2| 48-0 20 O 22-90 533-4] 46-8 | 756-6| 48-8 22 0 23-73 534-6] 44-8 || 742.0] 46-8 | 22, 0 24-01 525-9| 45-8 || 757-9| 47-8 Mar. 2 0 O 27-94 532:5| 47-7 || 729-7| 49-5 | Mar. 9 0 0 28-20 530-:0| 47-7 || 746-6) 49.0 2 0 27-96 536-8] 48-2 || 735-3] 49-8 2 0 28-25 540-5| 52-2 || 726-8] 52.9 4 0 26-01 543-2] 50-9 || 739-7} 52-3 4 0 26-62 541-5| 54-8 || 724-7) 55.0 | 6 0 24-60 540-1] 50-8 || 738-0} 52-1 6G 10 25-73 540-5} 53-9 || 750-3 54-5 | 8 0 24-47 541-1} 50-2 || 736-7) 52-0 8 0 "25-92 533-9| 53-6 | 760-5| 54.6 10 O 24-20 541-0} 50-1 735-9| 52-0 10 O 24.17 544-4} 54-0 || 736-5) 55-2 | 18 Oj] 25 24.47 540-1| 46-7 || 742-2} 49-0 18 O]| 25 23-30 540-0] 50-1 || 742-2) 52-0) 20 O 23-93 540:5| 47-0 || 735-2} 49-0 20) O 23-32 536-2} 50-4 || 744-4 52-0 | 22 0 23-26 535:9| 46-3 || 742-6| 48-5 22; 0 23-46 527-8| 49-4 || 735-7! 50-9 Mar. 3 0 O 24-96 534-3| 49.0 || 735-6] 50-9 |Mar.10 0 0 27-33 526:5| 49-0 | 725-4] 50-4 2 0 27-71 540-9} 52-9 || 731-0} 54-1 2 0 28-17 534-8} 50-6 | 732-1} 51-9 4 0 27-43 543-2} 54-9 || 727-6} 56-0 4 0 26-03 540-1] 52-3 || 723-2| 53-4) 6 0 25-78 540:6| 53-6 || 727-9| 54-6 6 0 24-13 539:6| 52-4 | 733-0) 53-5, 8 0 23-54 540-3} 51-8 || 728-3] 53-3 8 0 24-74 538:9| 51-8 | 733-3} 52.9 10 O 23-21 537-8| 50-2 || 735-4| 52-0 10 O 23-07 537-0| 51-7 || 736-6| 53-0 18 O}] 25 23.23 534:6| 43-0 || 706-7| 45-0 18 0O|| 25 22.92 536-3| 48-8 || 725-9} 50-3 20 O 23-56 539:7| 43-6 || 738-4] 45-9 20 O 22-85 538-0| 49-4 || 730-0} 50-7 22 0 23-04 537:9| 44-1 740-2) 46-5 22, 0 23-86 532-1} 49-8 | 725-5| 50-6 Mar. 4 0 O 26-48 535:-9| 47.2 | 717-4] 48-6] Mar.11 0 0 26-89 531-8} 52-2 | 716-4) 53.0 2° 0 29-58 543-0} 51-0 | 702-7| 51-6 ZF 0 29-76 537-8| 53-8 || 711-9| 54.4 4 0 28-70 544:5| 53-8 | 712-2] 54-0 4-0 29-66 540-6} 56-0 | 717-9| 56-3 6 0 27-24 545-7] 54-6 || 718-9] 54-5 6 O 27:88 537-5| 56-3 | 725-0) 569 8 0 27-24 539-:0| 53-4 || 747-0} 54-0 8 0 21-81 546-3) 55-0 || 725-4) 55-9 10 O 19-81 534-8] 52-0 || 755-4] 53-0 10 O 17-69 529-8} 54-6 || 735-5] 55-9) Mar. 5 18 O|| 25 22-96 528-4| 45.6 || 729-4] 46-8 | Mar. 12 18 0|| 25 292-25 527-7| 49-3 || 699-5} 50-8 20 O 30-37 537-3| 45-8 || 712-2} 47-0 20 O 29-06 516-2} 50-2 | 721-1] 52-0 22 0 24-84 531-0} 46-1 || 725-3) 47-3 22. (0 25-99 524-1} 50-9 || 726-5| 52-5 Mar. 6 0 O 29-19 533-6} 49-8 718-7| 50-5 | Mar.13 0 0O 28-27 525-0} 52-9 || 734.9} 54-9 2) 0 29-88 543-1) 52-5 719-4] 52-5 2 0 29-58 531-8) 54-0 | 731-5] 55-0 | 4 0 27-26 545:5| 56-0 || 720-6) 56-0 4 0 31-23 539-9} 53-4 || 740-0) 550° 6 0 28-10 535-1) 56-1 740:6| 56-2 6 0 26-94 539-4] 54-9 | 760-0! 57-0) 8 0 25:75 542-3) 56-7 || 760-4| 57-2 8 0 21-81 537-5| 52-9 || 739-4 54.5 10 O 15-23 536-4] 55-9 || 726-1} 56-8 10 O 23-77 533-3} 51-0 || 734-3| 52-5 | 18 0] 25 17-61 525-4) 55-2 || 661-6| 58-0 18 OQ] 25 21-51 528-7| 47-9 || 695-7 49-7 | 20 O 25-90 530-5] 56-0 || 705-4} 58-5 20 O 23-41 527-8| 47-7 || 710-4| 49-7 | 22 0 24-22 527-7| 56-4 |} 721-1} 58-1 22 0 24-01 525-0} 46-9 | 733-8 49-6 | Mar. 7 0 O 30-05 521-5] 57-6 || 739-7| 58-8 | Mar.14 0 0 25-58 528-5) 51-0 || 734-3) 51-9 } 2 0 31-33 536-4] 58-2 || 759-5| 59-4 2 0 28-77 535-3} 54-8 | 714-6 55:0 4 0 39-46 547-4| 58-3 803-5} 59-5 4 0 26-73 534-6| 56-2 || 724-4 56:5 | 6 0 29-80 546-8| 57-6 || 887-8] 58-5 6 0 23-86 534-9| 55-7 | 745-3 56-1 | 8 0 32-40 513-5} 55-5 1028-2] 57-4 8 0 22-25 535-3] 53-8 || 724-6] 54:7 | 10 O 25-83 528-6| 54-8 |} 813-1| 57-5 10 O 21-73 537-1| 52-1 || 723-6 53-3 | 18 O|] 25 22-92 530-2| 46-2 | 761-4] 48-3 18 O|| 25 22-72 532-1] 47-4 || 730-4 49.1 | 20 O 23-73 527-7| 45-9 || 764-4] 48-0 20 O 22-02 529-9| 46-9 || 740-2| 48-9} 22 0 24-25 523-9| 45-6 || 759-4| 47-8 22 0 21-15 530-0| 46-7 || 735-5| 48:3 } Mar. 8 0 O 27-13 521-7| 48-7 || 744:0| 50-0 | Mar.15 0 O 24-48 531-1] 49-4 || 723-0 50-2 2 0 28-64 532-7| 52-6 || 728-6| 53-3 2 0 27-49 535-9| 53-9 | 712-6| 54-1. 4 0 26-91 541-2) 56-0 || 723-9; 55-9 4 0 24-80 543-2} 57-8 || 707-5 57:5 6 0 25-49 538-6| 57-6 || 719-2] 57-0 6 0 23-03 539-41 57-7 || 703-9} 57-3 8 0 25-16 538-5| 56-6 || 727-2| 56-5 8 0 23-29 534-9| 56-1 || 717-0| 56-0 10 O 24-60 535-8| 54-2 | 736-4] 55-0 10 0 23-46 534-8} 53-8 | 714-0| 54:5 DECLINATION. ‘Torsion removed, circle reading,—March 104 3h, 36°; 134 234, 38°. BIFILAR. k=0:0001248. BALANCE. k=0:000015 approximately. Gottingen Mean Time of Declination Observation. | ad. oh. ar. 15 18 20 22 ar, 16 0O 22 ar. 22 DAILY OBSERVATIONS OF MAGNETOMETERS, Marcu 15—29. 1843. DECLINA- 25 25 25 25 25 25 TION. 23-14 24-60 24-04 28-07 31-83 29-01 24-87 23-43 24-10 23-97 22-96 21:98 27-87 30-27 27-36 24-00 23-93 23-86 23-26 22-58 21-19 26-59 29-80 27-85 24-60 23-70 23-66 22-11 21-76 22-33 28-39 30-12 26-72 24-69 24-01 23-86 21-79 20-32 21-76 26-06 29-44 25-21 23-10 22-99 23-12 22-27 19-22 19-42 24-20 31-03 32-22 27-38 19-42 6-44 BIrFI Cor- rected. Se. Div. 543-1 544:3 530-6 531-3 533-2 540-5 535-6 539-3 536-9 531-6 531-4 527-2 521-3 529-0 540-4 538-0 536-4 537-0 536-6 538-7 532-2 529-5 535-0 540-4 541-2 539-6 539-2 538-7 537-6 527-6 523-7 533-4 536-9 538-6 541-9 540-2 539-3 538-1 530-2 528-8 536-2 539-6 542-7 542-1 543:6 537-5 539-7 533-0 531-8 530-1 529-4 044-4 538-4 550:5 ~F LAR, BALANCE. Thermo-|| Cor- |Thermo-} meter. |} rected. | meter. © Mic. Diy. o i 53-3 || 682-0] 53-8 j 53-0 || 690-0) 53-2 52-2 | 690-8] 52-5 | 52-3 || 689-3} 52-5 53-2 || 695-9] 53.4 54-4 || 701-0) 54.2 54-2 || 724-6] 54.5 54-3 || 717-9} 54-3 53-7 || 702-6| 54.0 46-8 || 689-3] 47-7 46-2 || 705-1] 47-0 46-0 || 711:2| 46-6 46:3 || 707-5| 46-7 46-8 || 703-2] 47-0 46-7 | 702-7| 46-9 46-1 || 704:5| 46-4 45-8 || 702-8| 46-0 45:3 || 703:5| 45-6 44-5 || 698-9} 44.8 44-3 || 702-5| 44.7 44-3 || 703-:0| 44-6 45-2 || 694-7| 45.2 47-2 || 684-6] 46-5 48-1 || 693-7] 47-3 47-9 || 699-4] 47-0 46-7 || 696-8| 46-1 44-8 | 701-6| 45-0 37-2 || 686-4] 38-0 36-7 || 692-9! 37-5 36-6 || 694-1] 37-3 36-8 || 691-0] 37-5 37-0 || 686-3| 37-5 37-1 || 699:9| 37-7 37-0 | 698-4] 37-5 36-7 || 692-7| 37-1 36-1 | 693-3] 36-8 35-4 || 686-5| 36-0 35-4 || 689-9) 36-0 35-9 || 685-7] 36.4 37-9 || 678-5| 37-9 40-0 || 681-7| 39-5 42-3 || 687-2} 41-5 43-4 || 687-0} 42.2 42-7 || 682-6} 41-9 40-9 | 685-0} 40-8 35-0 || 677-6| 36-1 34-1 || 676-3| 35-1 34-1 || 679-1] 35-0 37-2 || 661-6| 37-3 41-2 || 666-5| 40-5 45-1 || 703.4| 44.2 48-1 || 725.3] 47-3 47-8 || 747-5| 47-2 46-7°|| 678:9| 46-7 BALANCE, ' k=0:000015 approximately. BIFILAR. BALANCE. Gottingen DECLINA- Mean Time of TION. Cor- |Thermo-|| Cor- |Thermo- Declination rected. | meter. |] rected. | meter. Observation. M u Se. Div. o Mice. Diy. ° ‘day 1b. 25 22-18 526-5] 45-1 || 707-2] 46-5 | Mar. 22 18 20-95 526-7| 43-7 || 710-1] 45-1 20 21-01 520-3] 43-0 || 709-4] 44-4 22 26-42 523-1} 43-2 || 705-5| 44-2 | Mar. 23 0 28-50 534.4] 43-5 || 709-3| 44-4 2 25-43 541-8} 43-7 || 719-1] 44-3 4 24-04 531-9| 43-6 || 731-5] 44-1 6 21-84 534-2] 43-5 || 730-1] 44-0 8 19-83 531-5| 43-4 || 730-3] 44-0 10 25 21-68 535-5| 44-7 || 715-1| 44-9 18 20-03 532-0} 44-9 || 720-1] 45-0 20 20-57 521-0] 45-1 || 720-8] 45-2 92 26-39 520-8| 45-5 || 701-1] 45-5 | Mar. 24 0 27-85 531-9] 46-2 || 708-4] 46-0 9 27-26 538-7| 46-9 || 717-6| 46-6 4 26-99 537-6| 47-2 || 722-6} 47-0 6 25-81 536 7| 47-0 || 750-6] 46-9 8 21-24 536-0] 46-8 || 746-2| 46-8 10 25 24-17 536-6] 45-8 || 702-8] 46-0 18 23-26 535-3] 45-5 || 710-2] 45-9 20 23-39 527-3] 45-8 || 709-3| 45-9 92 31-14 527-1| 47-2 || 701-9] 47-0 | Mar. 25 0 34-26 539-3] 50-0 || 701-2] 49-1 2 35-47 535-8| 53-0 || 733-2] 51-7 4 13-91 559-9| 53-7 || 780-0| 52-5 6 24-82 535-5| 53-0 || 748-3| 52-3 8 23-39 529-8) 51-3 || 737-0} 51-2 10 25 24-28 532-8] 44.7 || 704.2] 45-2 | Mar. 26 18 22:79 533-0] 44-2 || 702-8] 44-8 20 23-79 527-4| 44-4 || 701-8] 44-9 99 29-46 528-6| 46-0 || 697-6] 46:0 | Mar. 27 0 33°34 531-5] 48-0 || 700-7| 47-4 2 31-12 539-8] 48-1 || 711-8] 47-6 4 25-41 540-2| 47-7 || 721-8] 47-3 6 22-47 541-4] 46-6 || 717-8| 46-0 8 19-15 531:9| 45-7 || 712-6] 46-0 10 25 22-65 536-2| 43-7 || 699-7] 44-2 18 23-73 533-5| 43-8 || 698-1] 43-8 20 24.00 525-4] 44-0 || 701-6] 44-5 22 25-88 528-:8| 46-2 || 697-3] 46-0 | Mar. 28 0 30-45 531-6| 48-7 || 688-4] 47-9 2 28-74. 536-7| 50-1 || 700-3| 49-2 4 27-29 543-5] 50-1 || 710-2} 50-0 6 24-58 545-6} 50-9 || 711-4] 50-1 8 24-22 536-2| 50-7 || 707-3} 50-4 10 25 23-32 542-4| 47-4 || 690-2] 48-0 18 22-72 536-:7| 47-4 || 694-7| 47-8 20 22.23 532:5| 47-6 || 694-0} 47-7 22 30-43 527-0| 48-4 || 688-4] 48-4 | Mar. 29 0 35-67 548-3] 51-6 || 685-8] 50-7 2 32-28 542-9] 54-5 || 714-5] 53-4 4 25-96 547-3| 55-5 || 743-3| 54-5 6 26-22 539-7| 55-0 || 723-6| 54-3 8 20-87 548-0} 56-0 || 724-4] 56-0 10 DECLINATION. Torsion removed, circle reading,—March 174 3h, 26°; 204 23h, 21°. BIFILAR. k=0°0001248. March 164, March 294 04, The use of the copper stove was discontinued after this during the Daily Observations. The floor of the Observatory being washed. 8 DAILY OBSERVATIONS OF MAGNETOMETERS, MArcH 29— ApRIL 12. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. | BALANCE. Mean Time of DECLINA- Mean Time of DECLINA- |———_———_ 5 Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermg Observation. rected. | meter. |) rected. | meter. Observation. rected. | meter. || rected. | meter d. ih.) a: 9S 4 Se. Div. 2. Mie. Div. S Gly lt, ty i 4 Se. Div. Y Mic. Diy. Mar. 29 18 0O|| 25 21-93 528-0] 39-2 | 662-5| 39-7 Apr. 5 18 O]|] 25 14-23 515-4| 45-3 || 566-9 20 O 21-31 526-3| 38-0 | 669-4| 38-5 20 O 23-63 519-2} 44-6 || 563-5 22 0 20-54 518:7| 380 || 672-9} 38-4 22. 0 28-64 504-6| 44-6 || 633-5 : Mar. 30 0 0O 24-77 521-8| 39-6 || 663-6| 40-0 Apr. 6 707 70 34-82 521-1] 45-2 || 701-8] 466 2) 0 28-55 531-8| 42-1 || 684-3| 42-2 2 0 41-98 533-5 | 46:5 | 746-1] 46:5 4 0 27-76 538:5| 43-9 || 678-9} 44.0 4 0 40-91 555-1} 49-0 | 804-9} 48. 6 0 24-67 536-:0| 45-0 | 698-6} 45-0 6 0 32-69 543-4| 50-0 || 803-3] 49. 8 0 19-33 542-3| 45-1 || 693-7| 45-1 8 0 26-35 540-3| 49-6 || 726-9] 49. 10 0 21-37 538-6| 45-4 | 681-1] 45-4 10 5 8-60 521-8] 49-0 || 735-4] 48 18 O|| 25 21-41 5405| 46-7 || 662-8| 46-8 18 0O|| 25 21-68 527-6| 46-8 | 607-8| 47.5 20 O 20-67 533-7| 46-6 | 676-2| 46-8 20 O 21-91 530-1] 45-8 || 659-3) 46.5 22 0 20-23 525-1| 47-3 || 674-1) 47-4 22, 0 24-65 521-6| 46-1 || 678-2] 467 Mar. 31 0 O 25-41 527-1| 48-8 || 656-4} 48-9 Apr. 7 O°" 0 29-33 518-5] 47-0 || 675-2]. 474 2° 0 29-15 536:0| 50-7 || 659-0} 50-8 270 32-51 527-0| 48-8 || 692-3] 484 4 0 26-77 545-3| 52-4 | 666-6] 52-4 4 0 32-30 537-7| 50-1 || 708-1| 49% 6 0 24-80 542-1| 52-9 || 678-1| 52-7 6 0 20-47 558-8| 50-9 || 765-1} 504 8 0 23-79 541-1} 52-4 | 678-3) 52-3 8 0 19.10 538-7| 50-8 || 743-9] 50: 10 O 23-93 539-3| 51-3 | 673-5] 50-4 10 0O 18-73 536-4) 50-3 || 694-8} 50: 18 0O]] 25 22-99 539-5| 49-0 | 668-1} 49.2 18 0O|| 25 23-90 544-5| 43-5 || 626-0] 445 20 O 21-35 537-2| 48-9 || 670-2} 49.0 20 O 25-38 528-6| 42-9 || 659-9] 43 22° 0 22-58 525-9| 49-1 || 670-0| 49-0 22 10 23-59 522-7| 43-7 || 681-1] 44 Apr. 1 On 0 28-18 525-3) 50-2 | 656-4} 50-0 Apr. S-10r 0 28-15 524-1| 45-3 | 683-3| 454 ZO 32-40 540-4} 52-0 | 6588] 51-9 2° 0 30-99 528-4| 46-9 || 696-2] 46: 4 0 28-55 543-3| 52-9 | 672-6} 52-6 4 0 29-24 542-9| 48-7 || 716-3} 47-7 6 0 25-19 546:3| 53-6 | 681-5| 53-4 670 16-62 561-0} 48-0 || 773-8] 4754 8 0 24-00 541-5| 53-3 | 679-6| 53-2 87 0 20-67 543-2| 46-7 || 756-7 | 46% 10 O 23-93 539-3| 52-8 | 676-3} 52-5 10 O 22-30 536-7| 45-2 || 716-5) 45% Apr. 218 O}] 25 19.93 543-9| 49-6 || 649-9} 49-5 Apr. 918 O} 25 20-03 530:5| 38-2 | 655-5) 39% 20 O 20-55 535-3] 49-3 || 663-0] 49-2 20 O 23-39 528-5| 37-6 || 668-3] 38:6 Zon 0) 22-85 525:5| 50-0 || 668-4) 49-8 22 0 24-64 522:0| 38-0 || 679-5 H Apr. 3 100 30-34 527-9| 51-7 || 649-7) 51-5 Apr. TOV ORO 25-83 520-9} 39-2 || 673-4 9: 2 0 35-77 532-2) 53-2 | 661-1] 53-5 PY) 28-00 529-1] 41-2 || 674-5 41+ 4 0 29-95 535:8| 54-8 || 685-4] 54.8 4 0 26-62 || 533-9| 42-6 || 682-6| 42:1 6 O 26-62 543-6| 55-8 || 690-9} 55-5 6 0 24-35 539-7 | 43-3 || 695-8 42. 8 0 25-02 542-5] 55-0 | 683:4| 54-6 8 0 22-90 540-2} 42-2 || 691-2 42-( 10 O 20-77 528-1| 53-4 | 679-6| 53-0 10 0O 23-98 539-3| 40-8 || 692-2] 414 18 0O|| 25 24-10 534-7] 47-5 || 676-3| 47-5 18 0O]] 25 22-55 532:4| 34-6 || 679-2| 354 20 0O 22:69 532-2| 47-0 | 684:4| 46-8 20 O 20:07 528-9} 34-2 || 689-5 33. 22 0 23-27 523-9| 46-9 || 675-9| 46-6 22, 0 24-67 518-9} 34-8 || 697-3 5! | Apr. 4 0 0 29-85 521-8] 47-4 || 660-9] 47-2 Apr. ORO) 29-04 526-6| 36-4 || 678-2 6+" 2, 0 34-09 533-4| 48-0 || 650-5] 47-8 2 0 29-46 536:0| 38-7 || 676-3 18. 4 0 29-58 538-2] 48-8 || 674-2} 48-5 4 0 26-42 539-3 | 41-0 || 687-6 40: 6 0 25-95 539-2| 48-9 || 686-3] 48-5 6 0 24-08 547-2) 41-6 | 688-9 414 8 0 24.53 542-9| 48-6 || 687-4] 48-4 8 0 16-10 527-4| 40-8 || 714-5 10. 10 0 21-91 || 538-6) 48-0 || 680-8] 47-9 10 0 22-45 535-4| 39-3 || 706-6] 39: Fe 18 O|| 25 20-77 543-2] 46-2 || 660-0) 46-2 18 0O]] 25 22-45 538-3| 33-7 || 682-3 34. 20 O 21-49 043-0} 45-9 || 665-5| 46-0 20 O 20-84 533-9| 33-2 || 682-0] 34 22 0 23-93 533-6} 46-0 || 666-3] 46-0 22 0 23-19 521-5| 34-3 || 690-7 35: | Apr. a) (0) 0) 28-42 527-1| 46-8 || 650-3] 46-8 Apr. 12° 707 0 27-96 527-6| 36-5 || 677-8 D° 2.0 36-06 549-5| 47-7 || 657-7| 47-4 2 0 29-88 542-5] 39-1 || 677-1 38: 4 0 34-55 555-9} 48-3 || 737-7| 48-3 4 0 28-07 559-5| 42-1 |} 690-1 EG 6 0 23-56 592-1} 49-8 1065-6} 49.4 6 0 29-01 534-4| 42-8 || 786-5 42. 8 0 16-57 509-4} 50-2 || 897-1] 49.8 8 0 23-07 537-0} 41-9 || 800-7 41- 10 0 20-47 || 468-1} 49-8 | 679-5) 50-0 10° 0 18-55 || 542-2} 40-7 | 712-5| 4b DECLINATION. Torsion removed, circle reading,—March 314 3, 14°; April 34 23h, 18°; 104 23h, 22°. BIFILAR. k=0:0001248. BALANCE. k=0°000015 approximately. April 32, Workmen making and laying carpets in the Observatory, at intervals, since March 294, DAILY OBSERVATIONS OF MAGNETOMETERS, APRIL 12—26. 1843. y) Gottingen BIFILAR. BALANCE. Gottingen | BIFILAR. BALANCE. Mean Time of DECLINA- Mean Time of DECLINA- Declination TION. Cor- |Thermo-| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. ae eh.) m: 2 Y Sc. Div. © | Mie. Div. © Gb dag m. cc é Se. Div. @ Mic. Diy. ° pr.12 18 0} 25 23-26 || 524-4) 35.3 637-9| 36-2 | Apr. 19 18 0O|| 25 21.24 || 533-9) 53-8 | 677-7| 54-5 20 0 21-35 |) 532-5) 35-3 || 669-5) 36-1 20 0O 18-59 || 538-5] 52-2 || 675-7) 52-8 22) 0 23-10 523-6] 36-3 || 691-6] 36-9 2210 19-71 530-6| 52-7 || 680-4] 53-0 aD 0 28-94 || 523-3] 38-6 | 685-2} 38-6 | Apr. 20 0 0 25-52 || 527-4] 54-8 || 684-3} 54-8 2 0 30-65 539-7} 40-9 || 680-5} 40-5 210 28-81 534-2} 56-1 669-7 | 55-6 4 0 29-78 || 539-7} 42-6 || 703-8] 41-9 4 0 25-41 || 540-7| 56-3 || 691-6} 56-0 6 0 25-04 || 542-3] 42-4 || 719-9} 42-0 6 0 22-49 || 545-5| 56-0 || 696-6) 55-7 8 0 23-39 || 545-1] 41-7 || 696-9] 41-5 8 0 21-41 | 546-3} 55-6 || 700-5] 55-5 10 0O 20-43 || 551-9} 40-6 || 666-9} 41-0 10 0O 21:34 || 545-6} 55-6 || 694-7| 55-9 18 O|| 25 21-71 || 527-1] 38-7 || 677-2) 39-4 TU StpaMN OD He ll gece deul|| po5c00—.|ereoorde: Tense ceote ImEesce 20 «~O 29.50 || 539-3] 40-4 || 638-0] 40-5 SOR ON ee AR ein Sectce Ml eee ll eerie 22) '0 21-84 529-2| 43-0 | 671-4] 42-5 22 0 25 20-10 531-9) 51-4 || 687-7| 51-4 mia 0 60 29-65 || 519-1] 46-8 | 669-3| 45-4] Apr. 21 0 0 25-31 || 530-0) 53-7 || 679-9} 53-0 2 (0 32-87 || 528-3] 50-5 | 663-5] 48-6 2730 30-48 || 540-7| 56-0 || 670-0} 55-0 4 0 27-43 || 544-7| 53-2 || 677-4] 51-1 4 0 24-71 || 540-4) 57-6 || 701-2) 56-5 6710 24-60 || 552-4] 54-7 || 727-3] 52-7 6 0 25-21 || 546-0} 58-3 || 701-9} 57-0 8 0 21-91 || 546-9) 53-9 || 730-8} 52-5 S10 24-40 || 546-3) 57-7 || 687-3| 56-7 10 0O 21-58 |} 533-1] 52-8 | 646-0] 52-0 10 O 24-00 || 542-4] 56-3 || 685-0} 55-9 18 0O|| 25 26-10 |) 532-1] 49-4 || 670-1] 49-5 18 O|] 25 21-56 | 537-4] 52-4 || 689-4) 52-5 20 0 19-09 || 530-3| 49-0 | 671-4] 49-3 20 O 21-15 | 533-5) 52-0 || 688-4} 52-0 22 0 22:77 || 514-4] 50-1 || 692-4] 49.9 22 10 21-81 || 530-5] 52-0 || 683-9| 52-0 mero 0: 60 28-17 || 523.4] 51-7 || 680-4) 51-0 | Apr. 22 0 7 24-33 || 531-6] 52-3 || 673-3} 52-3 2 0 30-94 || 534-8| 53-7 || 685-3} 52-6 2 0 26-45 || 533-7) 53-3 || 678-7} 53-0 4 0 28-30 || 535-3} 54-4 || 708-9} 53-5 4 0 26-08 || 534-7} 53-6 || 674-1] 53-0 6 0 17-51 || 549-9} 54-0 || 722-7) 53-4 6 0 24.77 || 544-2] 53-2 | 682-1| 52-9 8 0 23-30 || 542-0] 52-8 || 710-6) 52-4 8 0 23-86 || 544-6] 52-7 || 685-0} 52-5 10 O 20-94 || 537-8] 51-5 || 704-9] 51-5 10 0 23-26 || 543-6} 52-0 || 689-4) 51-9 -16 18 O|| 25 20-65 | 536-9] 46-8 | 684-3| 48-0 | Apr. 23 18 7]| 25 20-25 | 534-1] 43-0 || 676-3] 44-0 20 0 19-93 || 533-9} 47-8 || 693-7| 48-0 20 O 19-29 || 533-6} 42-7 || 680-4] 43-7 22 0 21-82 || 522-6| 49-3 || 688-7] 49-0 22))'0 21-84 || 531-4] 43-8 || 679-5| 44-5 m 17 0 0 27-78 || 524-4] 51-9 | 666-9] 51-0 | Apr. 24 0 O 26-62 || 533-2] 47-6 || 661-1] 47-0 2 0 31-29 || 536-8) 54-7 || 660-5) 53-3 250 29-11 || 543-6] 52-0 | 638-0} 50-6 4 0 28-65 || 542-7| 57-2 || 664-1} 55-6 4 0 26-75 || 547-6] 54-5 || 646-3) 52-8 6 0 26-23 || 555-1] 58-6 || 680-8] 57-0 6 O 23-86 || 545-1} 54-7 || 662-0} 53-3 8 0 21-31 || 548-9} 58-2 || 680-1] 56-5 8 0 23-16 || 547-1] 53-6 | 664-0) 52-5 10 0 23-36 || 543-3] 55-9 || 677-9] 55-2 10 O 22-79 || 545-6] 52-0 || 663-2) 51-5 18 O| 25 24-50 | 531-2] 49-02) 646-8} 50-02 18 O|] 25 20-74 || 540-0| 47-6 |) 668-0| 47-5 20 O 20-70 || 534-2| 48-2 | 665-0} 49.5 20 O 19-12 || 537-7] 46-8 || 669-8} 47-0 22 0 24-72 519-3] 49-8 || 676-3] 49-8 22 0 22-11 526:9| 46-1 666-6 | 46-4 r.18 0 0 28:95 || 526-0| 51-7 || 670-3) 51-3 Apr. 25 0 O 25-68 || 525-4] 45-8 | 654-6] 46-0 2. 3 (0) I cooeoo 537-8| 54-2 || 670-7| 53-4 yaa) 29-17 || 538:0| 47-1 || 655-2} 47-1 4 0 28-14 550-7| 55:7 || 677-3] 54-7 4 0 25-79 || 546-6] 50-1 651-0} 49-1 6 0 25-72 || 549-8| 55-4 | 739-6) 54-6 6 0 24-17 | 549-7) 52-0 || 658-9} 50-6 Sr 0 20:57 554-1| 54-8 731-9} 54-5 8 0 22-60 || 549-9} 52-0 665:8| 50-7 10 0O 22-30 || 545-7) 54:0 || 716-8) 53-7 10 O 21-64 || 546-8] 50-1 || 666-1] 49-6 18 0} 25 20-52 || 537-8] 51-4 || 681-2} 51-4 18 0O|| 25 23-59 || 539-3) 43-7 || 663-8| 44-5. 20 0 19-84 || 535-5) 51-7 || 693-3| 51-5 20 O 18-62 | 535-9| 43-3 | 670-5) 44-1 22 0 21-44 525-2| 52-6 | 689-3) 52-3 22 0 19-74 525-9! 44-0 || 674-1] 44-5 r19 0 0 27-53 524.7| 55-0 684-1] 54-4 Apr. 26) 10)) 30 25-95 526-7) 46-0 || 664-3] 46-0 2 0 30-49 || 532-8| 58-4 | 674-4] 57-0 2. 10 28-42 || 541-4] 48-5 | 658-1) 47-7 4 0 27.36 || 546-5] 60-3 | 678-3) 58-8 4 0 25-70 549-4| 49-0 || 661-9] 48-4 6 0 19-93 544.6| 61-2 || 703-2) 59-7 6) 10 23-90 || 551-1} 49-4 || 667-5) 48-9 8 0 23-73 546-6| 60-2 684-7 | 59-2 8 0 21-91 548-9| 48-2 677-9| 48-0 10 O 23-09 || 543-8!) 58-7 | 683-9) 58-5 TOPO 22-58 || 546-2] 46-8 || 666-3} 46-8 DECLINATION. Torsion removed, circle reading,—April 174 23, 26}°; 244 23h, SoH, BrrizarR, k=0°0001248. BALANCE. k=0:000015 approximately. - 10 DAILY OBSERVATIONS OF MAGNETOMETERS, APRIL 26—May 10. 1843. DECLINA- TION. 25 20-84 20-05 21-78 27-00 32-28 28-27 25:29 24:31 23-97 20-43 19-09 21-98 27-27 28:84 24-53 24-06 25:05 24-84 25 25 25 23-30 22-74 22-05 19.47 19-17 21-98 27-63 28-35 25-76 22-49 20-00 20-57 17-61 18-80 21-75 25-92 30-16 26-13 17-69 23-48 26-59 25 25 BIFILAR. BALANCE, Thermo- rected. | meter. Cor- Se. Div. 499.4 497-5 491-5 493-1 509-8 502-6 511-6 511-6 507-7 496-7 493-3 485-6 490-0 500-0 505-8 516-2 512-6 508-6 496-5 494-6 50:3 49-9 481-7 481-6 480-8 476-5 492-9 496-4 505-1 505-0 505-7 482-3 487-3 486-2 487-6 514-7 518-1 531-2 512-0 499-5 Cor- |Therm rected. | meter Mie. Div. g 673-6 | 50-f 667-1) 50-¢ 668-3} 50 644-3} 53. 639-1] 55-€ 651-8} 57-6 664-6| 58-6 676-7} 58-€ 665-2 | 57-0 669-7 666-9 671-3 651-5] 51. 658-2 669-0 672-2 673-7 663-1 676-8 679-1 657:8 645-0 640-8 641-1 660-2 701-7 400-2 636-1 9959 OO Sh eR He Ron NN on a A A on Og Gottingen BIFILAR. BALANCE. Gottingen Mean Time of DECLINA- Mean Time of Declination TION. Cor- |fhermo-|| Cor- |Thermo Declination Observation. rected. | meter. |] rected. | meter Observation. ds, jis hive eke oI , Se. Diy. ) Mie. Div. @ dja ehe Apr. 26 18 O| 25 19-67 || 537-9 41-9 || 675-2 42-5 May 3 18 20 O 17:99 | 533-8 | 41-5 || 677-1 42.3 20 22 0 22-13. || 528-7 42-4 || 673-4 43-0 92 Apr. Di Oe 10 30-12 ||531-7 | 46-0 | 646-1 45-5 May 4.00 2a 10) 30-07 || 538-5 48-8 || 646-0 47-6 2 4 0 OU Ae}2) ||) Sones etal ralaiecctete 671-1 49-9 4 Guo 92-79 SDOCHD + ieoocaoS 688-3 51-5 6 8 0 22-58 | 548-0 53-5 || 683-6 51-5 8 10 O 23-26 || 547-7 52-0 || 676-8 50-9 10 18 0O|| 25 17.83 || 541-6 47-8 || 675-5 47-9 18 20 0 18-95 ||536:8 | 47-2 || 672-0 47-4 20 22 0 22-85 || 529-6 47-2 || 665-5 47-3 22 Apr. 28 0 0 27-43 || 534-9 47-9 || 661-1 47-7 May 5 0 Zan0 29-85 ||498-1*| 48-8 || 664-4 | 48-1 2 4.0 25-86 || 503-9 48-3 || 672-7 48-1 4 6, 0 22-58 || 507-0 | 48-0 || 682-2 48-0 6 8 0 22-18 | 504-6 | 48-1 || 684-4 48-0 8 10 O 21-21 || 503-5 47-3 || 671-1 47-3 10 18 O} 25 19-76 || 497-1 42-8 || 680-7 43-5 18 20 O 18-21 ||489-9 | 42-6 || 672-5 43-4 20 22 0 21-48 || 486-1 43-8 || 661-1 44-1 92 Apr. 29 0 0 20-70 || 490-4 | 47-8 | 653-4 47-0 May 6 0 2) 20: 29-95 | 500-9 52-2 || 654-8 50-5 2 4 0 27-20 || 504-6 54-6 || 668-4 52-5 4 6 0 24-17 || 506-8 55-0 || 669-8 53-3 6 8 0 23-27 || 508-6 53-4 || 665-5 52-4 8 10 O 22-74 || 509.4 52-0 || 663-2 51-5 10 e Apr. 30 18 O} 25 19-65 || 498-3 47-2 || 669-7 47-6 May 7 18 20 O 18-82 || 492-7 | 46-9 || 666-9 47-2 20 225 10 22-06 || 489-9 | 48-0 || 662-3 48-1 22 May 10; 10 28-27 || 491-5 51-7 || 659-8 50-6 May 8) 20 2 0 29-36 || 502-1 55-4 || 651-0 54-0 2 4 0 25-38 || 491-2 58-4 || 664-9 56:4 4 6 0 23-46 || 509-3 59-8 || 662-9 57-6 6 8 0 22-42 | 513-4 60-0 || 669-3 58-0 8 10 O 19-22 || 501-2 57-9 || 667-5 56-5 10 18 0|| 25 19-15 || 494-4 | 49-0 || 667-5 49-5 18 20 O 19-65 || 487-5 48-1 || 672-6 48-5 20 22 0 21-42 || 489-6 48-6 ||668-7 | 49-0 22 May 2a OO Niwa 9 sisieine 485-4 51-7 || 658-2 51-0 May 9 0 > 0 | Oo 497-8 55-1 || 643-9 53-9 2 4 0 26-89 || 506-6 57-6 || 657-6 55-9 4 6 Of] — eeeene 510-7 59-0 || 663-9 56-6 6 8 O}] — ceeeee 510-3 58:3 || 667-0 56:5 8 10 0O 24-74 || 504-0 55:7 || 672-0 54-7 10 18 O|] 25 20-63 || 498-1 48:8 ||675-8 49-0 18 20 O 20-57 ||498-4 | 48-3 || 671-7 48-5 20 22 0 22-79 || 489-9 49-1 || 670-1 49-1 22 May SOO 26-50 || 494-1 51-2 || 655-7 50-5 May 10 0O 2 0 27-40 || 504-1 55-3 || 640-9 53-9 2 4 0 25-75 || 508-4 58-8 || 644-8 56-5 4 6 0 25-02 || 510-9 60-7 || 655-9 58-4 6 8 0 23-93 ||511-5 61-4 || 663-0 59-0 8 10 O 23-73 || 506-0 59-1 || 661-6 57:5 10 DECLINATION. Torsion removed, circle reading,—May 14 23h, 36°; 64 5h, 150°t ; 104 34, 155°. BIFILAR. k=0:0001205.* BALANCE. k=0-000015 approximately. * April 274 2h—6h, Bifilar magnet adjusted. * April 284 0h—2h, Bifilar magnet again adjusted. May 24. Several observations of the Deglination not made for the same reason as on April 184, . t May 64 4b, Observations made for the zero of the Declination scale when a fibre of the suspension-thread was broken. The torsion was ultimately eliminate : aeey Jat Naeem excessive magnetic disturbance, during which the torsion cirele of the Bifilar Magnetometer was turned from 287° 44’ to 291° 45’; it W eft reading 287 ° May 94. The Bifilar magnet has been moving irregularly throughout the day; the reading has often been as high as 512 Sc. Div. fi DaILy OBSERVATIONS OF MAGNETOMETERS, May 10—24. 1843. 11 Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of DECLINA- Mean Time of DECLINA- Declination TION. Cor- /Thermo-} Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo Observation. rected. | meter. |/ rected. | meter. Observation. rected. | meter. || rected. | meter. fete.) 9 7 Se.Div.| ° |/Mie.Div.| ° Pia oie ae lec Se.Div.}| ° |/Mic.Div.| 9 ay 10 18 0} 25 22-96 || 488-2) 46-9 | 668-3) 47-2 |May 17 18 0] 25 21-71 | 493-9] 45-0 | 655-5) 45-5 20 0 24-50 || 486-0} 46-6 || 666-5] 46-9 20 0 20-16 | 493-3] 44-8 | 661-7| 45.2 22 0 25-27 || 484-4) 47-3 || 670-7] 47-6 22 0 21-62 || 485-6} 45-8 | 652-5) 46-0 ay 11 0 0 22-80 || 486-9} 49-9 || 659-2} 49:0] May 18 0 0 26-48 || 494-8| 47-4 || 641-6) 47-0 2 0 27-36 || 503-1] 53-9 | 664-1} 52.4 2 0 30-03 || 498-9] 48-8 || 654-6} 48-0 4 0 25-46 || 504-0} 57-6 || 675-4) 55-5 4 0 26-94 | 503-8} 49-9 || 660-2} 49-0 6 0 23-76 || 509-5| 59-7 || 679-8} 57-4 6 0 24-74 || 512-6) 50-1 | 677-3] 49-3 | 8 0 26:79 || 512-3] 59-8 || 675-0} 58-0 8 0 22-67 || 513-4} 50-4 || 686-1] 49-5 10 0 20-74 || 499-9} 58-1 || 675-3] 56-8 10 0 24-13 || 507-4) 49-6 | 671-9} 48-9 18 O} 25 20-00 | 490-4} 49-3 || 675-1] 49-9 18 0] 25 22-08 | 497-2} 42-7 | 672-5) 43-5 20 0 17-27 || 489-2] 49-2 || 683-8} 49-5 | 20 0 20-43 || 497-3) 43-0 || 685-7| 43-9 22 0 23-21 || 481-1] 50-7 || 676-4] 50-5 | 22 0 21-96 || 490-0| 44-8 || 671-5} 45-0 ay 12 0 O 28-00 | 482-6| 52-8 | 670-1] 52-0} May 19 0 O 26-89 || 491-0} 47-6 | 649-9} 46-9 2 0 29-95 || 504-1] 54-6 || 671-3] 53-6 | 2 0 29-75 || 498-9) 49-8 || 656-5} 48-6 4 0 27-88 || 501-6} 55-5 || 679-5| 54-5 4 0 26-19 || 506-4] 51-6 | 668-7} 50-0 6 0 26-50 | 507-1| 55-7 || 686-2} 54-9 6 0 24-72 || 510-1) 52-0 | 673-8) 50-6 8 0 26:55 || 505-6] 55-2 || 682-6] 54-5 8 0 22-36 || 510-5] 52-0 | 670-7} 50-6 10 0 25:65 || 502-6] 54-7 || 682:7| 54.2 10 0 23-32 || 506-7} 50-3 | 663-9) 49-5 18 Oj} 25 21-15 || 503-2) 52-9 || 649-5] 52-7 18 0|| 25 20-00 || 498-9} 46-0 | 674-3] 46-4 20 0 20-77 || 494-0} 53-0 || 662-0] 52-9 20 0 17-07 || 496-9] 46-8 || 684-9} 46-9 | 22 0 22-33 || 490-2} 53-8 || 672-2] 53.2 22 0 21-21 || 486-8) 47-3 || 678-6] 47-2 ay 13 0 O 26-35 | 488-2| 55-3 || 672-4) 54-7 | May 20 0 0 27.22 | 486-1] 49-0 | 653-2} 48-5 | Ze (0 27-13 || 493-4] 56-3 |) 665-3} 55-6 2 0 28-17 || 494-6] 51-8 || 655-8} 50-4 4 0 26-50 || 496-4] 57-2 || 673-2] 56-4 4 0 25-98 || 504-7} 54-5 || 667-0) 52-5 | 6 0 24-82 || 504-9) 56-9 || 683-1] 56-3 6 0 24-18 || 514-5] 55-6 | 674:5| 53-7 | ‘ 8 0 24-25 || 505-5} 56-0 || 694-3] 55-6 8 0 22-45 || 508-1| 54-9 | 671-7| 53-5 | 10 0 24-53 || 501-0] 55-0 | 682-4] 55-0 10 0 23-29 || 507-1] 52-8 || 664-4) 52-0 ty 1418 0} 25 22-05 || 501-4] 52-0 || 666-9] 52-1 May 21 18 0] 25 20-57 | 500-1] 46-8 | 671-3} 46-8 20 0 19-70 | 497-9} 51-8 | 667-9] 51-8 20 0 19-63 || 495-2] 46-7 | 673-4| 46-7 22 0 20-57 || 487-8] 52-0 | 668-2} 52-0 22 0 21-37 || 494-9] 46-8 | 649-3} 46-8 | 15 0 O 26-69 || 486:7| 52-6 | 642-4| 52.4 | May 22 0 0 24-92 || 497-7| 47-0 | 639-6) 47-0 | 2 0 32-97 || 501-4] 52-6 || 639-2} 52.4 2 0 26-59 | 507-5| 47-8 || 645-3] 47-5 4 0 31-90 || 523-1] 52-3 || 644-5] 52-0 4 0 26-94 || 510-0} 48-1 | 655-0} 47-8 | 6 0 28-67 || 519-1} 52-0 | 665-9} 51-6 6 0 25-25 || 512-8] 48-3 || 666-8) 48-0 8 0 23-91 | 523-9) 51-2 || 701-2) 51-0 8 0 24-85 || 517-2] 48-2 | 664-1} 48-0 | 10 0 22-58 || 497-2} 50-7 || 737-2] 50-9 10 0 24-47 || 512:5| 47-7 || 662-6) 47-6 18 0} 25 26-99 || 506-2) 48-3 || 646-0] 48.5 18 0] 25 17-62 || 500-9} 46-9 || 654-5} 47-0 20 0 22-52 || 488-5} 48-2 || 651-9] 48.2 20 0 19-07 || 491-5| 46-9 | 657-2) 47-0 22 0 25-72 |) 480-3] 48-3 || 667-3] 48-3 | 22 0 20-63 | 489-0] 47-6 || 645-9] 47-4 y 160 0 28-15 || 479-2] 48-8 || 667-4| 48-8 | May 23 0 0 25-34 | 492-9} 48-1 | 634-9| 47-8 ; 2 0 31-30 | 493-8) 49-0 || 663-9] 48-9 2 0 26-97 || 504-1] 48-9 | 645-4} 48-4 4 0 24-96 || 499-7} 49-0 || 710-9} 48-8 4 0 25-07 || 508-6) 49-0 | 661-3} 48-5 6 0 26-42 | 512-0] 48-8 | 705-3] 48-6 | 6 0 22-35 || 512-9) 49-0 | 675-6} 48-6 8 0 25-07 || 508-2] 48-6 || 693-0} 48.4 | 8 0 22-92 || 511-9) 48-9 | 667-0| 48-6 10 0 22-45 || 513-0} 48-0 || 684-0} 48-0 10 0 23-93 || 511:5| 48-8 | 662-7) 48-5 18 0} 25 21-26 || 491-9} 46-0 || 667-7} 46-2 18 O}] 25 18-41 | 504-0; 48-0 || 658-9] 48-0 20 0 20-57 || 493-8] 46-8 || 678-7| 46-8 20 0 18-45 || 496-5| 48-0 | 660-2| 48-0 22 0 21-73 || 490-0} 47-3 || 675-4) 47-1 | 22 0 22-53 | 484-8} 48-3 | 655-9] 48-2 y 17 0 O 25-78 | 487-5] 48-4 | 659-4} 48-0 | May 24 0 0 29-91 || 486-8} 48-8 | 639-1} 48-5 2 0 27-80 || 500-0| 49-9 || 655-5] 49-0 | 2 0 31-46 | 496-9} 49-0 || 638-9| 48-8 4 0 22-79 || 509-1] 50-8 || 689-2} 49-8 | Ay 0 27-38 || 504-8) 49-9 | 665-6) 49-5 6 0 24-55 || 516-6) 50-8 || 684-4} 49-8 } 6 10 22-58 | 514-0] 50-1 | 671-6} 49-5 8 0 24-57 || 513-1} 49-7 || 678-7] 49-2 | 8 0 22-67 | 515-0| 49-8 || 669-1} 49-3 10 0 23-54 || 500-3) 48-4 || 673-5) 48-3 10 0 23-07 | 512-1} 48-9 | 661-1] 48-6 DECLINATION. ‘Torsion removed, circle reading,—May 124 23h, 173°; 154 23h, 198°; 194 3h, 203°. BIFILAR. k=0:0001205. BaLance. k=0:000015 approximately. 12 DAILY OBSERVATIONS OF MAGNETOMETERS, May 24—JuneE 7. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of DECLINA- || ————-————_ || ———__,—__]__ Mean Time of x= — Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Therm Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | mete Gh 1G m. = ¢ Se. Div. 2 Mic. Div. a do arh. m. Y Se. Div. . Mic. Div. = May 94 18 O|] 25 18-97 503:9| 47-3 667:9| 47-5 May 31 18 O|| 25 22-72 || 504-1) 47-8 || 672-7 478 20 O 18-52 || 497-3| 47-6 || 677-6| 47-5 205710 19-09 || 496-9} 47-8 || 671-2) 474 re (0) 21-71 490-8} 48-3 || 661-1] 48-0 22) 10 21-24 || 481-4| 48-2 || 666-5| 48-0 May 95) 2050 29-33 || 488-8| 49-8 || 625-1} 49-2} June 1 0 O 28-21 488-9} 49-0 || 640-3] 48:8 2 0 33-54 || 499-8] 50-8 || 622-4} 50-0 ry (0) 34:50 || 500-5] 49-7 || 645-9 49-2 4 0 29-89 507-6} 51-1 649-7| 50-4 ANa0 31-04 || 511-3} 50-0 || 656-4] 49-4 6 0 24-60 || 511-4) 51-1 676-8 | 50-5 oO) 25-66 || 513-1] 50-2 || 670-4] 49 8 0 23-79 510-8] 51-3 || 670-9} 50-7 8 0 24-06 || 514-1| 50-2 662-7} 49- 10 0O 24-17 511-5| 51-0 || 664-7] 50-5 10 0O 25-18 || 511-9} 50-0 || 665-1| 49 18 0O|| 25 19-80 504-7| 49-1 665-2} 48-9 18 OO} 25 21-24 || 508-1} 49-0 || 671-6| 49: 20 O 19-39 500-8| 50-3 || 663-3| 49-8 20) 0 19-06 503-8| 49-8 || 670-6| 49.5 22 0 20-54 || 491-3] 52-0 || 652-0] 51-1 2250 22-45 || 490-0} 51-7 || 657-1] 508 May 26 0 O 29-36 || 496-0| 54-2 632-8| 53:0] June 2 0 O - 30-39 || 493-7] 53-7 || 625-6 52K Py (Y) 33-94 503-4| 56-3 619-5| 55-2 250 33-94 || 504-:5| 56-0 || 633-0| 54 4 0 28-54 || 513:5| 57-7 || 635-4| 56-5 40 32-57 || 505-2) 56-3 652-6 | 55: 6 O 25-95 517-7| 58-4 || 655-2) 57-1 6 0 26:97 || 511-5| 55-1 679-3) 54 8 0 22-45 Fila -Oll ea7s3 676:6| 56-5 8 0 25-39 || 521-2| 53-9 || 663-7| 53s LOMO 17-61 473-2) 55-9 578-3| 55-5 10 O 25-88 518-4] 52-8 || 651-3) 52:6 18° O|| 25 17-04 || 504-3| 54-4 || 649-9| 54-4 18 0] 25 19-36 || 502-2} 49-7 || 646-4| 40% 20 O 16-41 490:8| 53-8 || 661-1} 54-0 20 O 15-79 || 493-8| 49-4 || 653-1) 49:4 22 0 20:67 || 478-5} 53-8 || 656-5] 54-0 22), 0 34:85 || 491-8] 49-4 || 629-3) 49 May Mr (0) 0 27-76 || 489-1] 54-9 || 641-3) 549] June 3 0 O 30-46 || 495-7| 49-9 || 638-4] 4 20) 29-98 504:5| 55-3 || 644-8] 55-4 2 0 33-42 || 498-5] 50-6 || 641-2} 50: 4 0 27-43 514:8| 55-7 || 663-4} 55-5 4 0 31-50 || 500-5] 50-3 || 679-7| 50 6 0 23-91 514-5| 56-6 || 670-2} 56-2 6a 28-41 508:5| 49-8 || 680-0} 494 8 0 22-65 514-1] 56:3 671-8| 56-0 Sa 0 25-63 512-8} 49-0 || 695-6 48 10 O 21-96 508-8| 55-7 || 671-4] 59-8 10 O 24-20 || 504-5] 48-1 673-5 | 48: May 28 18 O} 25 19-22 503-1| 45-8 || 663-5| 46-4 | June 418 O|| 25 21-56 || 501-7) 46-3 623-6 j 20 O 18-21 495-5} 46-1 678-9| 46-5 20 O 23-16 || 492-6} 46-1 655-0 | 46: 220) 19-47 || 489-5 | -46-9 || 659-2} 47-0 2240 26:42 || 488-6} 46-0 || 656-1 46- May 29 0 0 26-62 || 495-4| 49-6 || 632-6] 49-0} Jume 5 0 O 29-31 487-6| 46-0 || 643-3 46 ZO 30-99 525-2| 52-7 || 619-0) 51-5 2a0 27-96 || 497-2) 46-1 649-2} 46: 4 0 33-38 516-9] 54-0 || 642-1] 52-7 4 0 27-58 || 516-6] 46-1 657-7 16- 6 0 27:96 522-6| 53-9 || 660-6] 53-0 a) 24-67 || 505-8| 46-0 || 675-7) 46 8 0 24.24 523-9| 53-7 || 677-2] 52-9 Sed 26-01 512-4| 45-6 || 671-5 b OO) 24-72 510-2] 52-7 || 667-2] 52-1 Los 10 25-68 || 505-4) 45-1 672-2| 46: 18 O]| 25 28-67 509-6| 46-8 || 615-9] 47-2 18 O|| 25 20-41 497-7| 44-2 || 645-8} 44 20 O 24-53 493-3] 46-8 || 646-0| 47-2 Ze 0 21-95 || 496-1} 44-9 | 665-4] 46 22010 21-35 487:7| 48-0 || 651-1] 48-0 PPA AY) 23-36 || 493-5) 46-4 || 649-4 6: May 30 0 0 27-02 492-3] 50-0 | 642-1) 49-5 |June 6 O O 27-40 || 492-0| 47-8 |) 643-5| 47 2 0 30-51 501-8| 53-7 || 643-1] 52-4 2 0 29-21 502:0| 49-1 636-1| 48 4 0 29-31 509-6 | 55-8 || 653-9} 54-2 4 0 26:97 506-9| 50-9 || 657-7) 49 6 0 25-52 512-3) 55-0 || 674-0} 54-0 6 0 - 25-98 || 508-9] 51-6 || 662-8 50 is} (0) 24.47 513:3| 54-0 || 674-9} 53:3 8 0 25-22 || 515-2) 51-9 || 660-5| 50 10 O 24-67 507:8| 52-7 || 667-3) 52:5 10 O 24-60 || 509-9) 51-7 || 664-7| 50 18 0O]| 25 21-14 || 499-7) 48-8 || 662-8} 49-0 18 O} 25 21-42 || 502-9] 49.4 || 642.7 49 20 0O 20-63 || 496-5| 48-2 || 669-3| 48-5 20 O 20-30 || 499-2} 50-2 659-4 49) 220) 22-36 || 486-1] 48-0 || 654-8} 48-4 22/5 30 22-27 || 490-9} 52-0 || 657-2 1 May ail’ @ © 26-79 || 491-3] 48-4 || 632-7| 48-5! June 7 0 O 27-76 || 498-6| 53-2 || 650-3] 52 2 0 30-90 || 506:3| 48-9 || 649-4| 49-8 ZnO 27-61 511-8} 55-4 || 650-4 54 4 0 28-94 509-7} 49-6 658:0| 49-2 4 0 29-11 507-7| 47-1 657-5| 58 6 0 25-46 512-3] 49-9 || 670-4) 49-5 6 0 25-01 514-0} 57-1 683-7 ae rs}. (0) 24-06 513-1] 50-0 || 668-2} 49-6 8 0 25-51 518-5} 57-0 || 686-9} 3 10 O 23-93 510-5| 49-7 || 666-4| 49-4 10 O 32-35 || 510-1| 56-2 || 642-8 4 Se r DECLINATION. ‘Torsion removed, circle reading,—May 264 3h, 229° ;* 294 3h, 246°; June 74 1h, 253°, BiriarR. k=0'0001205. Bauance. k=0-000015 approximately. * May 264 3h, Two fibres of the suspension thread of the Declinometer found broken. DAILY OBSERVATIONS OF MAGNETOMETERS, JUNE 7—21. 1843. 13 Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. lean Time of DECLINA- Mean Time of DECLINA- Declination TION. Cor- |Thermo-|| Cor- /|Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. gaeuh. mm.) ° f Se. Div. o Mic. Div. C! Gh wk a ° i Se. Div, a Mic. Div. G me 718 0O|] 25 21-95 || 484-6 | 53-7 ||633-7 | 53-7 | Junel4 18 0|| 25 28-37 || 494.9 | 56-3 1670-0 | 56-3 20 O 25:92 | 489-1 | 54-5 || 642-6 | 54-3 20) 0 23-21 ||496-3 | 57-0 || 677-0 | 56-6 220 24-60 | 484-8 | 55-2 ||672-8 | 54-9 22 0 24:72 ||484-1 | 57-9 ||681-2 | 57-5 me 8 0 O 26-75 ||494-5 | 56-0 ||661-9 | 55-5 |Junel5 O 0 31-36 || 486-2 | 60-3 || 664-6 | 59-5 2 0 29-68 ||496-3 | 56-9 || 642-0 | 56-2 7 (0) 32:60 ||501-5 | 63-4 || 657-9 | 62-0 4 0 26-87 || 504-4 | 57-8 || 660-0 | 57-0 4 0 30-51 505-2 | 65-7 || 659-8 | 64-0 6 0 25-85 ||509-8 | 58-0 || 668-3 | 57-3 6 0 27:93 ||515-2 | 67-1 || 672-4 | 65-1 8 0 23-19 ||512-8 | 57-5 ||680-5 | 57-0 8 0 28-64 | 511-7 | 67-6 || 672-1 | 65-6 10 O 23-29 || 504-2 | 56-2 ||673-0 | 56-0 10 0 27-96 | 507-9 | 66-1 || 678-6 | 65-0 18 O}] 25 21-29 | 496-1 | 53-1 | 668-2 | 53-1 18 0O]|] 25 26-13 || 496-8 | 57-6 || 681-7 | 57-6 20 0O 19-63 || 492-7 | 53-4 || 674-3 | 53.4 20 O 24:98 ||488-2 | 57-3 ||699-3 | 57-5 22 0 22-58 || 487-7 | 54:8 ||670-2 | 54-4 22-10 24-62 ||483-8 | 58-7 ||677-6 | 58-5 ne 9 QO O 26-35 ||486-5 | 55-6 || 665-6 | 55-0 | Junel6 0 O 33-87 || 488-1 | 61-7 || 658-3 | 60-8 20 28-67 || 498-8 | 56-2 || 659-6 | 55-5 2 Of} — veseee 498-9 | 64-9 || 628-0 | 63-5 4 0 26-19 || 508-3 | 56-8 || 666-0 | 56-1 4 0 29-78 ||502-9 | 67-3 || 656-5 | 65-5 6 0 24-75 ||508-8 | 57-2 ||672-6 | 56-5 6 0 27-44 ||512-5 | 68-7 || 672-5 | 66-6 8 0 24-74 || 509.2 | 56-7 ||672-3 | 56-0 8 0 26:62 ||512-7 | 68-3 ||677-0 | 66-5 10 0O 23-34 ||507-7 | 55-7 ||675-1 | 55-5 10 0O 27-29 ||510-3 | 66-9 ||681-5 | 66-9 18 0] 25 17-07 || 506-1 | 53-2 | 666-6 | 53-2 18 0O|| 25 23-79 || 502-0 | 57-7 || 686-0 | 58-0 20 0 19-54 ||518-7 | 53-4 ||655-8 | 53-4 20 O 24-47 |495:5 | 57-1 690-0 | 57-4 22 0 24-06 || 497-2 | 54-3 ||657-5 | 54-0 22 0 25-81 || 485-2 | 57-9 || 687-8 | 57-8 nelO 0O O 30-79 || 491-4 | 56-0 ||654-0 | 55-5 | Junel7 0O O 32:00 || 488-6 | 59-3 || 669-9 | 58-6 2 0 33-27 || 505-9 | 58-1 656-3 | 57-1 2 0 33-22 || 497-8 | 61-0 || 666-6 | 60-1 4 0 29:04 | 511-3 | 59-7 || 665-7 | 58-5 4 0 30-66 || 505-3 | 63-2 || 685-0 | 61-8 6 0 25-83 || 512-3 | 60-8 ||681-5 | 59-5 6 0 27-98 ||511-6 | 65-3 || 679-5 | 63-4 8 0 26-17 | 522-0 | 61-0 || 682-2 | 60-0 8 0 27-93 ||517-8 | 66-7 || 674-6 64-5 10 O 25-27 || 514-8 | 59-3 || 669-3 | 58-9 10 0O 27:36 ||507-1 | 65-0 || 667-3 | 63-6 neil 18 0] 25 23-09 | 501-9 | 52-7 | 642-9 | 52-6 | June18 18 0]|| 25 23-24 || 500-2 | 54-0 || 682-8 | 54-0 20 0 23-26 || 496-9 | 52-7 || 655-9 | 52-5 20 O 21:91 || 498-3 | 53-4 || 683-8 | 53-4 22710 25-19 ||477-4 | 52-7 || 663-7 | 52-5 22,10) 23-86 || 486.4 | 53.3 || 683-8 | 53-1 nmel2 0 O 27-83 ||492-2 | 53-5 ||663-8 | 53-0 | June19 O O 24-71 || 491-9 | 53-9 || 666-5 | 53-6 > 0) 31-19 | 500-3 | 54-6 || 684-9 | 54-0 2 0 26:22 ||503-8 | 54-8 || 654-4 | 54.4 4 0 30:55 || 505-0 | 55-6 || 695-3 | 54-9 4 8 25-21 506-5 | 56-0 || 670-0 | 55-4 6 0 25-27 ||516-1 | 55-4 | 708-3 | 54-8 6 0 21:84 |515-0 | 55-9 || 674.5 | 55-3 8 0 25-88 ||519-7 | 54-6 || 700-3 | 54-1 8 0 19-22 || 521-7 | 55-4 ||678-1 | 55-0 10 0O 22-55 | 508-9 | 53-4 || 698-9 | 53-0 10 0 21-22 | 514-9 | 54-8 || 678-6 | 54-5 18 0O|] 25 23-24 ||490-2 | 49-9 | 657-5 | 49-8 18 0} 25 17-09 || 503-4 | 51-6 || 664-4 | 51-5 20 0 18:55 | 485-4 | 49-8 | 674-2 | 49.5 20 0O 16-80 | 497-7 | 52-0 | 676-9 | 51-9 22 0 22-67 || 480-3 | 50-0 || 684-2 | 49.8 22 0 17-25 || 493-8 | 53-3 ||674-5 | 52-7 nel3 0O O 26-62 | 486-3 | 51-0 ||674-8 | 50-5 | June20 0 O 23-93 ||497-5 | 55-9 || 664-8 | 54-9 20 32-27 || 509-9 | 53-0 || 663-6 | 52-3 250 28-50 || 499-0 | 59-8 || 636-3 | 58-0 4 0 29-31 ||511-2 | 54-3 || 698-2 | 53-2 4 0 27-22 || 507-9 | 63-3 || 642-9 | 61-1 6 0 24-60 || 492-5 | 54-8 || 731-0 | 54-0 6 0 22-72 || 521-8 | 66:3 || 656-9 | 63-9 8 0 26:62 || 510-4 | 54-5 || 695-9 | 53-8 8 0 21-24 || 523-7 | 67-1 || 662-3 | 65-1 10 0O 23-57 ||516-9 | 53-5 || 654-2 | 53-0 10 O 19-33 || 520-1 | 65-5 || 666-2 | 64-0 18 O|| 25 26-15 ||499-3 | 50-7 || 685-3 | 50-5 18 0O|| 25 17-74 || 498-9 | 58-2 || 665-8 | 58-5 20) 0 25-11 | 498-6 | 51-9 || 682-3 | 51-5 20 O 17-14 ||494.4 | 58-1 ||675-4 | 58.3 22 0 24:77 ||492-9 | 53-4 || 673-6 | 52-8 22 0 20-03 ||489-5 | 58-5 | 670-8 | 58-4 nel4 O O 30-55 || 495-4 | 56-1 658-7 | 55-1 | June21 0 O 24-13 | 492-4 | 59-8 || 652-1 | 59-4 7 Y) 34-08 || 503-4 | 59-2 || 653-9 | 57-9 2 0 28-59 ||504-5 | 61-3 ||651-8 | 60-5 4 0 32-25 || 502-7 | 61-8 || 668-0 | 59-8 4 0 26-03 || 508-1 | 64-1 658-5 | 63-0 (oy (0) 29-51 511-0 | 63-1 689-2 | 61-0 6 0 23-04 || 512-3 | 66-0 || 665-7 | 64-5 3) 0 28-70 || 512-0 | 64-0 || 675-2 | 62.2 8 0 21-75 ||516-2 | 66-7 || 665-5 | 65-3 10 0O 27-63 || 505-9 | 62-6 || 671-5 |! 61-5 10 O 20-57 || 512-8 | 65-7 || 668-0 | 64-8 DECLINATION. ‘Torsion removed, circle reading,—June 84 2h, 267°, 278° ;* 164 2h, 118°;+ 164 3h, 48°; 184 234, 77°; 214 gh, 87°. BIFILAR. k=0:0001205, BALANCE. k=0:000015 approximately. * June 84 Qh, \t June 164 2h, When two readings of the torsion circle are given at the same date, the last is the result of a second trial. Three fibres of the suspension thread of the Declinometer found broken ; torsion eliminated as above; the three fibres ve then withdrawn, and the torsion again removed before 4. MAG. AND MET. oss. 1843. 14 DAILY OBSERVATIONS OF MAGNETOMETERS JUNE 21—JuLy 5. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of DEcLINA- || | ————_————_j_ Mean Time of DEcLINA-_— || ——————————_ Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-| Cor- |Thern Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | met GE eisip | teal 2 e Se. Div. ° Mic. Div. S dad. h. m. 4 ts | Se. Div. S Mie. Diy. ° June21 18 O|] — ese 497-2 | 59-9 ||663-7 | 60-2 | June28 18 0]] 25 21-24 ||507-1 | 50-8 || 673-9 | 50.4 DOM Oeae oss 496-3 | 59-7 || 665-7 | 60-1 20 0 20-43 || 489-0 | 50-9 || 685-9 9 22 O}] — eeaeee 500:5 | 61-1 660-0 | 61-0 22 0 24:06 | 490-1 | 51-9 | 677-7 June22 0 O|] eevee 499-0 | 63-2 | 639-0 | 62-6 | June29 O O 26-53 | 497-4 | 53-7 || 667-7 : 2 O|] — ceaeee 504-3 | 65-8 || 645-6 | 65-3 2 2 0 28-67 || 508-4 | 55-4 || 659-8 4 O|] esses 503-7 | 68-0 || 643-7 | 66-9 4 0 25-04 | 516-4 | 57-0 || 674-9 6 OO} —— eeeree 514-5 | 69-9 || 651-2 | 68-4 6 0 21-58 513-5 | 57-1 675-7 8 O}] — eeeeee 515-3 | 71-0 || 657-4 | 69-3 8 0 19-91 519-4 | 58-4 || 671-8 OPM O) | Pit =-eRee 510-3 | 69-7 || 657-3 | 68-4 10 0 20:79 || 520-2 | 58-9 || 662-8 18 0 sooees |1 500-0 | 59-6 | 655-7 | 59-6 18 0] 25 15-86 | 505-3 | 54-3 || 652-5 20 O}] — eaesee 492-8 | 59-0 || 675-3 | 59-4 20 0O 14-66 || 495-0 | 54-3 || 659-1 22 Of ereeee 486-2 | 59-4 || 681-5 | 59-5 22790 16-48 || 490-1 | 55-3 || 661-9 i June23 0 0O|| 25 24-20 | 487-4 | 62-0 ||674-3 | 61-5 |June30 0 O 33-05 | 491-7 | 56-9 || 650-2 2 0 28-57 || 494-9 | 66-5 || 652-3 | 65-0 20 39-66 ||505-2 | 59-0 || 643-6 4 0 30-58 ||504:5 | 69-9 || 642-2 | 68-0 4 0 33-25 || 522-5 | 60-4 || 663-6 6 0 29-21 513-8 | 70-0 || 648-4 | 68-2 6 0 31-12 | 525-5 | 61-2 || 704-4 8 0 27-83 ||516-3 | 69-3 || 660-5 | 68-0 S vOWORe a2ikee 515-7 | 62-0 || 712-3 10 O 27:49 ||510-8 | 67-0 || 663-3 | 66-3 10 0O 26:08 || 507-6 | 61-3 | 687-7 18 0O| 25 23-66 ||501-0 | 59-0 || 662-5 | 59-0 18 0] 25 25-14 | 488-8 | 56-3 || 582-2 20 0 21-24 || 496-2 | 59-0 || 674-9 | 59-0 20 0O 16:40 || 484-5 | 57-3 || 636-9 i 2250 22-56 || 490-4 | 60-3 || 678-4 | 60-0 22,0 20-92 | 481-4 | 58-4 || 647-6 June24 0 0 32:30 || 496-0 | 63-0 | 666-4 | 62-1 July 17700 30-07 || 483-0 | 59-6 || 645-6 250 35:22 ||501-9 | 64:9 || 666-8 | 63-7 22 0 33-76 || 491-3 | 61-6 || 648-4 4 0 31-79 ||512-3 | 66-9 || 646-2 | 65-3 4 0 30-29 || 508-7 | 62-2 || 659-4 6 0 29-22 ||513-5 | 68-3 || 658-9 | 66-3 i 28-64 ||517-8 | 62-2 || 666-5 8 0 27-94 || 513-4 | 68-8 | 668-8 | 66-8 80 25-48 | 520-5 | 61-9 || 681-4 10 0O 27-14 ||509-9 | 67-0 || 676-8 | 66-0 10 O 25-90 || 506-6 | 60-9 || 669-6 June 25 18 0O|| 25 21-41 504-4 | 55-0 | 661-4 | 55-0 July 218 O]| 25 24-33 1505-7 | 60-6 || 633-9 20 O 18-46 | 495-4 | 54:9 ||673-0 | 54-9 20500 19-58 || 500-1 | 60-8 || 647-7 22 0 21-31 || 483-4 | 55-1 673-1 | 55-0 22,0 22-11 | 484-1 | 61-3 || 650-5 June26 0 0 31-46 ||484-4 | 56-6 || 647-3 | 56-0 July on OVO 30-79 | 479-7 | 62-4 || 640-8 a) 34-95 ||504-5 | 58-9 || 643-5 | 57-7 20 34-61 492-6 | 64-1 639-7 4 0 33-20 ||515-7 | 61-7 || 675-2 | 60-0 4 0 32-89 ||515-3 | 65-7 || 656-0 6 0 26-62 | 513-8 | 63-2 || 687-4 | 61-5 (i ) 28-88 ||518-0 | 66-4 || 670-9 8 0 25-75 ||517-9 | 63-0 || 677-7 | 61-5 3} 0) 26-89 ||517-7 | 67-0 || 679-0 10 O 25-48 || 512-0 | 61-1 669-9 | 60-3 10 0O 19-89 ||/513-0 | 65-8 || 660-5 18 0O]) 25 20-57 ||501-9 | 54-5 ||672-2 | 54.9 18 O| 25 24-60 || 492-3 | 59-2 || 661-1 20 O 19-76 || 492-3 | 54-4 | 676-3 | 54-6 20 O 22-22 ||494-7 | 59-2 || 680-0 22 0 23-12 || 484-1 | 54-6 || 664-0 | 54-6 22a 23-59 || 483-6 | 59-8 || 676-8 June27 0 0 31-74 || 486-0 | 55-1 648-0 | 55-0 July 4010 28:88 | 481-0 | 61-9 || 668-8 Py 0) 33°55 ||499-9 | 56-2 || 655-6 | 55-7 By 19) 31-19 ||495-0 | 64-3 || 668-9 4 0 30-45 ||510-5 | 57-8 || 674-3 | 57-0 4) (0) 30-15 ||510-7 | 66-6 ‘| 659-4 6 0 25-95 ||510-1 | 58-2 || 677-9 | 57-2 670 28:44 511-8 | 68-3 || 662-8 8 0 25-31 517-7 | 57-1 ||675:-5 | 56-5 Sad 26-15 || 521-1 | 69-0 || 668-0 10 0O 25:27 ||513-0 | 55-7 ||670-0 | 55-5 10 O 25-86 | 512-5 | 67-6 || 667-4 18 O|| 25 21-9] 504-1 | 51-0 || 668-4 | 51-0 18 O|| 25 26-84 || 495-6 | 61-8 || 640-2 20 0 19-60 ||497-0 | 51-2 || 683-6 | 51-0 20 :«~O 22-05 ||498-1 | 61-4 || 644-8 22 0 23-19 || 483-9 | 52.2 || 674-5 | 51-9 22 O 24-31 ||489-3 | 62-1 || 666-4 June28 0 0 30:96 ||487-6 | 53-2 || 657-1 | 52-7 July Ser (0), 0) 28-08 || 487-1 | 63-6 || 666-7 2 0 32-72 ||501-1 | 54:8 || 658-2 | 54-0 » 29-89 ||498-9 | 66-1 662-5 4 0 31-19 ||512-0 | 55-7 || 671-3 | 54-8 4 0 29-17 || 504-5 | 68-1 653-2 (310) 26:48 |/511-5 | 56-0 ||681-1 | 55-4 6 0 29-44 ||508-1 | 67-9 || 651-8 8 0 25-75 512-9 | 55-7 ||670-9 | 55-0 8 0 26-10 ||512-6 | 67-2 || 655-9 10 O 25.54 ||509-5 | 54-4 || 664-9 | 54-0 10 0O 25-12 || 507-6 | 65-6 || 660-8 a 318°,t 271°;+ 304 3h, 326° ;+ 304 7h, 334°, 325° ;+ July 54 74, 15°. DECLINATION. Torsion removed, circle reading,—June 224 23h, 342°;* 234 19h, 326°; 254 19h, 6°, 11°; 284 23h, 16°, 32°; 294 Zod BIFILAR. k=0:0001205. BALANCE. k=0:000015 approximately. A a * June 224234, Suspension thread of Declinometer broken and a new thread substituted. See Introduction. a. + June 294304, Experiments made on the torsion of the suspension thread. See Introduction. «> Gottingen ean Time of Declination Ybservation. bo tbo ly 8 bo r 10 oc:.6 6 6C1e S10 S416" ' S'S eo S'S" Oo COS 'S Sore 2S "SSeS Se SSeS SS eo oS So ee Ssooooooscos DAILY OBSERVATIONS OF MAGNETOMETERS, JuLY 5—19. 1843. DECLINA- TION. 25 22-83 22-62 19-86 23-90 27-49 26-06 24-60 24-53 24-06 20-81 25 25 25 25 25 BIFILAR. BALANCE. Cor- |Thermo-|| Cor- |Thermo- rected. | meter. || rected. | meter. Se. Diy. 2 Mice. Div. © 499-6 | 62-0 || 662-3 | 62-0 495-7 | 61-7 || 660-8 | 61-8 491-6 | 62-2 || 669-5 | 62-2 487-1 | 63-3 || 642-3 | 63-0 494-9 | 65:3 || 639-1 | 64-5 503-7 | 67-2 || 644-8 | 66-2 505-1 | 67-6 || 652-6 | 66-7 509-3 | 67-0 || 658-1 | 66-5 509-8 | 65-8 || 656-3 | 65-5 496-9 | 58-7 || 663-0 | 58-9 492-6 | 58-1 ||675-1 | 58-5 488-2 | 59-4 ||679-2 | 59-4 489-3 | 61-6 662-9 | 61-0 505-5 | 64:0 || 648-9 | 63-0 513-4 | 66-6 || 662-2 | 65-2 517-0 | 67-0 || 671-1 | 65-8 517-5 | 66-5 || 682-2 | 65-5 510-2 | 65-2 || 660-4 | 64-8 501-7 | 59-5 || 622-5 | 59-7 500-0 | 59-9 || 629-5 | 60-0 473-0 | 61-2 || 654-1 | 60-9 484-3 | 63-4 ||658-5 | 62-7 488-4 | 65-3 || 668-2 | 64-4 514-8 | 64-9 672-8 | 64-0 511-0 | 64:9 || 727-5 | 64-1 513-9 | 64:7 ||690-6 | 64-0 502-1 | 63-6 || 658-9 | 63-4 504-7 | 60-9 || 636-6 | 61-0 492-7 | 61:0 || 639-9 | 61-0 483-4 | 62-0 || 654-3 | 62-0 498-9 | 64-4 || 653-8 | 63-6 486-7 | 66-2 || 673-2 | 65-3 506-2 | 67:7 || 678-6 | 66-4 528-2 | 68-6 ||695-1 | 67-0 510-0 | 67-7 || 694-3 | 66-6 507-2 | 65-9 || 662-2 | 65-4 494-8 | 60-8 || 657-4 | 60-9 487-6 | 61-2 || 664-8 | 61-1 484-1 | 62-0 || 652-0 | 62-0 492-9 | 63-6 || 653-4 | 63-0 507-8 | 65-7 || 667-6 | 64-8 512-6 | 67-9 || 656-7 | 66-5 512-1 | 69-0 || 655-4 | 67-3 511-9 | 69-9 || 662-7 | 68-0 510-1 | 68-4 || 663-6 | 67-0 496-9 | 59-3 ||661-4 | 59-6 490-0 | 59-1 || 664-4 | 59-4 481-3 | 60-4 || 673-1 | 60-3 485-0 | 62:0 | 665-4 | 61-5 500-7 | 63-6 || 660-7 | 62-8 507-8 | 64-2 || 663-7 | 63-5 510-3 | 63-3 || 664-8 | 63-0 515-5 | 62-0 || 675-0 | 62-0 507-6 | 61-4 || 663-6 | 61:5 Gottingen Mean Time of Declination Observation. a, h, July 12 18 20 22 July 13 July 14 July 15 July 16 July 17 July 18 22 July 19 0 —y iy DECLINA- 25 25 25 25 TION, B1FILAR. 15 BALANCE. Cor- |Thermo-|| Cor- |Thermo- rected. | meter. || rected. | meter. } Se. Div. ° Mie. Diy. co 498-1 | 59-0 || 659-0 | 59-0 492-4 | 59-3 658-1 | 59-3 486-5 | 60-8 || 657-5 | 60-5 487-9 | 62-7 ||663-3 | 62-0 504-6 | 65-0 || 612-1 | 64-0 516-6 | 67-7 || 638-4 | 66-0 520:0 | 68-8 || 654-3 | 67-1 513-3 | 69-6 || 662-4 | 67-8 507-7 | 68-0 || 656-6 | 67-0 495-8 | 60-5 || 605-1 | 60-5 493-3 | 60-2 ||634-5 | 60-4 484-9 | 61-1 655-4 | 61-0 492-9 | 64:0 || 654-3 | 63-4 510-2 | 66-2 650-4 | 65-2 507-1 | 67-8 || 653-2 | 66-6 514-4 | 68-6 || 647-8 | 67-5 512-0 | 68-9 || 663-2 | 67-6 506-6 | 67-6 || 659-4 | 66-7 502-7 | 62-4 || 653-0 | 62-3 499-3 | 62-3 656-4 | 62-3 493-0 | 63-8 || 657-2 | 63.4 497-6 | 65-9 ||645-5 | 65-0 500-9 | 67:6 || 645-7 | 66-5 512-1 | 69-6 || 635-5 | 68-0 516-5 | 71-0 ||634-3 | 68-4 512-8 | 71-0 || 654-6 | 69-5 507-7 | 68-1 642-9 | 67-5 499-9 | 58-2 || 651-1 | 58-5 499-8 | 57-7 || 644-8 | 58-0 496-7 | 57-9 ||637-7 | 58-0 493-3 | 59-7 || 640-6 | 59-2 490-0 | 61-6 || 648-1 | 60-7 505-3 | 62-2 ||646-0 | 61-5 516-3 | 62-7 ||657-4 | 62-0 512-6 | 62-6 668-9 | 62-0 506-4 | 62-2 || 662-0 | 62-0 500-7 | 60-7 ||649-3 | 60-5 497-9 | 60-7 ||653-2 | 60-5 490-1 | 60.7 ||654-6 | 60-5 484-5 | 60-4 || 634-0 | 60-3 500-5 | 61-7 || 636-7 | 61-2 509-6 | 63-3 || 641-1 | 62-6 513-0 | 65:0 || 649-4 | 64-0 511-4 | 65-9 || 659-5 | 64-8 508-1 | 65-0 || 651-6 | 64-0 502-8 | 58-2 ||644-7 | 58-4 502-2 | 58-4 || 647-7 | 58-5 499-0 | 58-3 || 630-4 | 58-5 489-7 | 58-7 ||628-7 | 58-6 495-2 | 60-2 || 629-5 | 59-8 507-3 | 61-8 || 639-3 | 61-0 513-5 | 62-3 650-4 | 61-5 515-7 | 61-8 || 649-6 | 61-0 506-9 | 60-4 || 654-6 | 60-2 DECLINATION. Torsion removed, circle reading,—July 54 215, 28°; 114 3h, 46°, 51°; 134 23h, 59°; 184 19h, 44°; 194 7h, 67°, k=0:000015 approximately. BIFILAR. k=0:0001205. BALANCE. 16 DAILY OBSERVATIONS OF MAGNETOMETERS, JULY 19—AveusT 2. 1843. Gottingen BIFILAR. BALANCE, Gottingen BIFILAR. BALANCE, Mean Time of DECLINA- Mean Time of Din ——— 4 Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-| Cor- /Therp Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | met i Gh 1 Gaol, 2. ’ Se. Div. - Mic. Div. a Gee ue on. o. 72 Sc. Diy. G Mic. Div. J | July 19 18 0O|] 25 18-48 ||500-9 | 58-2 || 647-1 | 58-8 July 296 18 0} 25 18-35 ||487-1 | 59-8 || 624-2 | 60: 20 O 17:88 || 495-7 | 57-4 |1651-3 | 58-0 20 O 19-02 || 489-9 | 59-7 ||611-L | 60.0 22.0 20-72 || 490-7 | 57-4 || 652-0 | 57-8 22 0 21-44 | 484-0 | 60-6 || 612-2 | 60 July 20 0 O 95:27 ||488-8 | 57-3 || 642-5 | 57-5 July 27100 28-65 || 488-8 | 62-6 ||595-0 | 60 (0) 27-46 ||497-0 | 57-3 || 640-8 | 57-5 250 31-30 || 505-3 | 64-9 || 627-7 | 64. 4 0 23-76 ||507-5 | 57-7 || 649-5 | 57-8 4 0 96:94 | 506-1 | 66-3 || 642-5 | 65. 6 0 21-96 509-7 | 58-0 || 658-3 | 58-0 6 40 19-67 || 512-2 | 66-4 || 666-4 | 65 8 0 22-43 510-3 | 58-2 || 655-4 | 58-2 § 0 23-98 || 505-7 | 65-6 || 649-7 | 65.0 10 O 22-05 || 509-4 | 57-9 || 651-8 | 58-0 10 0 24-33 || 508-6 | 64-0 || 641-0 | 63. 18 O|| 25 19-31 506-0 | 55-3 || 641-7 | 55-5 18 O} 25 15-52 || 496-8 | 58-8 ||613-9 | 59 ZO 0 19-89 ||505-7 | 55:7 || 641-6 | 55-7 20 9 20-37. || 494-3 | 58-7 || 624-4 | 58: f 22 0 20-43 || 496-4 | 56-9 || 628-9 | 56-5 2270 22-69 ||486-8 | 59-3 || 640-1 59: July PAu (O) 10) 25-52 || 492-3 | 58-1 618-0 | 57-5 July 28 0 O 25-34 ||492-9 | 60-8 || 618-4 | 60 2 0 29-31 | 500-4 | 59-3 ||/617-2 | 58-6 | 7AM) 27-36 ||488-5 | 62-7 || 630-1 | 61 4 0 28-17 ||511-2 | 61-2 || 631-1 | 60-3 4 0 26-80 || 501-3 | 62-9 || 645-0 | 62 6 0 23-93 ||513-9 | 62-7 || 637-3 | 61:5 6 0 23-39 || 507-6 | 62-0 || 640-5 | 61 8 0 93-86 || 515-5 | 63-3 || 649-7 | 62-0 8 0 92-16 || 510-3 | 61-0 629-3 61 10 O 23-17 || 509-2 | 62-0 || 647-5 | 61-0 10" 0 21-53 505-4 | 60-0 || 641-0 | 60: 18 0O|| 25 17-41 503-7 | 55-1 632-5 | 55-5 18 0] 25 17-94 | 496-1 | 57-5 || 636-7 | 57 20 O 17-58 ||497-0 | 55-1 644-0 | 55-5 20: 0 17-22 || 498-2 | 57-9 || 639-8 | 57. 220 20-48 ||494-8 | 56-7 || 640-2 | 56-4 220 21-10 || 490-2 | 59-1 || 635-6 | 58 July 22 0 0 26-67 || 497-4 | 58-8 || 631-2 | 58-0 | July 29 0 0 28-23 || 483-3 | 61-2 || 622-6 | 6( 2 0 29-02 || 497-9 | 61-0 || 632-3 | 59-8 2 0 32-08 || 501-7 | 63-7 || 624-8 | 62 4 0 28-05 506-5 | 61-6 || 654-4 | 60-7 4 0 27-70 || 507-2 | 64-4 || 642-8 63 6 0 24.64 ||510-3 | 61-7 || 665-1 | 61-5 6 0 22-85 517-9 | 63-6 || 650-9 | 63: S70 23-19 ||512-3 | 61-8 || 658-6 | 61-2 8 0 17-99 || 521-1 | 62-6 || 671-3 | 62 TORO 22-92 ||509-9 | 61-0 || 661-2 | 60-7 10 O 26-20 || 507-3 | 61-3 || 648-2 | 61 ) July 23 18 O|| 25 20-61 503-4 | 54:0 || 639-1 | 53-6 July 30 18 0O|| 25 24-72 || 496-1 | 58-4 || 595-2 | 58 20 O|| 25 19-15 ||499-7 | 54-2 || 654-4 | 53-9 20 O 19-63 || 493-8 | 58-4 ||631-7 | 5§ 22 0] 25 21-64 || 495-9 | 55-0 649-2 54-7 22:0 21-95 ||485-2 | 58-9 | 640-0 | 58: July 24 0 O| 25 26-52 || 499-2 | 56-3 || 629-3 | 56-0 July 31°10) 0 26-19 || 484-4 | 69-0 || 622-3 | 59 2 O|| 25 27-96 ||511-7 | 57-9 || 633-2 | 57-0 2 0 28-48 || 503-9 | 60-8 || 622-8 | 61: 4 0O| 25 25-79 || 513-5 | 60-0 || 637-1 | 59-0 4 Ol] cewtees 510-7 | 64-2 || 643-2 | 64:2 6 0O|| 25 25-32 || 567-3 | 61-3 || 621-0 | 60-2 6 0 set ece 513-3 | 65-6 || 650-2 | 64-4 8 0|| 25 22-99 || 524-7 | 62-1 685-1 | 61-0 8 0 20-10 ||513-1 | 64-8 || 657-2 | 64-6 10 O| 24 55-11 507-9 | 61-3 593-6 | 60-5 10 O 17-34 | 510-9 | 62-8 || 639-4 62-6 ‘18 O| 25 17-88 || 503-1 | 54-8 || 654-6 | 54-7 18 0O|| 25 18-08 | 498-6 | 58-3 || 640-9 | 58 20 O 17:67 || 496-7 | 54-2 || 654-9 | 54-6 20)70 17-44 || 494-5 | 58-0 || 640-2 | 58:2 ; rs (0) 31-03 || 444-1 | 56-3 1674-9 | 56-0 220 18-87 || 491-3 | 58-0 || 643-5 8 f July 25 0 0 33-15 ||467-2 | 60-0 || 702-6 | 59-6 Aug. LO) 0 24-96 ||488-7 | 58-7 || 623-6 | 58 7 35-59 ||517-5 | 63-2 || 814-0 | 63-2 24 (0) 28-44 || 505-6 | 60-2 | 620-1 | 59% 4550) 28-12 ||609-2 | 65-0 || 905-5 | 63-7 4 0 28-32 ||515-7 | 61-3 || 625-9 | 605 6 0 31-96 ||519-4 | 66-0 || 812-8 | 64-9 0) 23-48 ||510-7 | 61-4 || 629-7 | 608 8 0 19-63 508-0 | 65-8 || 736-0 | 65-0 Ss 0 21-91 511-5 | 61-1 || 636-6 0-7 10 O 20-10 || 474-3 | 64:6 || 663-7 | 64-0 10 0O 20-58 || 509-7 | 60-3 || 635-2 18 0O| 25 15-03 | 466-0 | 60-8 || 642-9 | 60-9 ! 18 O| 25 19-51 498-6 | 58-0 || 638-2 20 © 20-70 || 486-3 | 60-9 || 646-2 | 60-9 20 O 16:35 || 495-8 | 57-9 || 637-3 7a} (0) 22.72 ||479-5 | 61-6 || 644-8 | 61-4 22 0 19-93 || 489-9 | 58-1 641-3 July 26 0 0 26-97 || 481-5 | 63-7 || 630-0 | 63-0 Aug. 2 0 0 27-31 || 490-1 | 58-9 || 617-5 } 2 0 29-91 499-3 | 65-4 ||622-1 | 64-5 0 28-30 || 494-6 | 60-0 || 610-6 4 0 29-31 508-7 | 66:3 || 632-2 | 65-4 | 4 0 25-01 500-9 | 60-8 || 630-9 6 0 24-60 ||508-1 | 66-4 || 662-9 | 65-6 6 0 21-91 512-6 | 61:9 || 643-6 3} (0) 23-50 || 508-4 | 66-1 666-4 | 65-5 8 0 21-04 ||513-2 | 62-2 || 634-4 10 O 22-94 || 505-0 | 65-2 || 657-8 | 65-0 10 O 22-33 || 509-6 | 61-3 || 634-5 DECLINATION. ‘Torsion removed, circle reading,—July 264 74, 40°; 304 23h, 25°; 314 7h, 52°.* . BIFILAR. k=0-0001205. BALaNcE. k=0:000015 approximately. *July 314 2h, Observations made to determine the zero point of the Declination scale. . DAILY OBSERVATIONS OF MAGNETOMETERS, AUGUST 2—16. 1843. Lif . Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- Mean Time of DE CHUNAR Ny | ee | Declination TION. Cor- |Thermo-|) Cor- |Thermo-|. Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. een rm. || ¢ Se. Div. e Mic. Diy. ° GEL ME eparel || els 97 Se. Div. ° Mic. Diy. ° ug. 2 18 0} 25 19-80 || 502-9 | 58-0 | 638-0 | 58-0 Aug. 918 0] 25 18-63 | 499.6 | 59-5 |1631-7 | 59-5 20 0 17-41 ||497-5 | 58-0 || 644-7 | 58-0 20 20 18-68 || 488-4 | 58-7 || 646.2 | 58-8 22 0 20:97 ||493-1 } 59-7 || 635-7 | 59-0 22 0 20-10 | 479.4 | 59.0 || 645-3 | 59-2 ug. 3 0 O 26:89 ||488-6 | 61-4 ||619-6 | 60-7 | Aug.10 0 0 28-27 | 490-7 | 61-6 || 607-0 | 61-0 pr 0 29-29 ||507-1 | 64:0 | 610-1 | 63-0 2 0 28-64 507-4 | 65-3 || 624-4 | 64-1 4 0 29-08 ||535-3 | 66-7 || 604-0 | 65-2 4 0 25:02 | 512-0 | 67-8 || 637-6 | 66-0 6 0 21:08 || 512-7 | 68-0 || 637-0 | 66-5 6 0 22:53 || 522.7 | 69-2 || 641-3 | 67-2 8 0 21-79 || 526-7 | 67-3 ||617-9 | 66-0 8 0 21:58 | 509-7 | 69-0 | 628-6 | 67-0 10 oO 16:67 || 527-2 | 65-2 ||625-7 | 64-7 LOMO 22:74 ||508-5 | 67-0 | 621-3 | 65-8 18 0O}| 25 17-78 || 497-4 | 59-4 || 602-5 | 59-5 18 0] 25 18-55 | 501-7 | 59-0 | 636-1 | 59-3 20 O 20-27 || 497-1 | 59-0 || 621-0 | 59-2 20 0 17-67 || 490-8 | 58-8 || 641-1 | 58-8 22 0 20-82 ||466-7 | 60-4 ||/625-5 | 60-2 22 0 22-60 || 483-3 | 59-6 | 637-6 | 59-5 ug. 4 0 0 31-43 || 490-3 | 62-8 | 601-8 | 62-2 |} Aug.11 0 0 27-50 | 485-6 | 62-1 || 626-2 | 61-5 2” 0 29-42 ||512-9 | 65-0 || 682-0 | 64-0 2 0 30-63 || 501-5 | 64-7 | 626-3 | 63-5 4 0 32:78 ||519-3 | 66-0 | 685-9 | 65-0 4 0 24-18 | 499.6 | 65-7 | 661-8 | 64-6 6 0 13-68 || 537-3 | 67-0 ||772-5 | 66-5 6 0 22-57 1513-5 | 66-6 || 653-3 | 65-5 8 0 21-24 517-4 | 66-2 | 679-1 | 65-4 8 0 19-87 512-7 | 66-3 || 648-0 | 65-5 10 O 20-61 511-5 | 64-9 || 624-7 | 64.4 10 0O 20-62 || 524.8 | 65-1 || 617-5 | 64-7 18 0} 25 18-82 ||492-3 | 58-8 || 643-9 | 59-0 18 0|| 25 20-17 | 497-8 | 59-4 | 630-0 | 59-7 20 0 19-22 ||484-0 | 58-4 || 643-3 | 58-7 20 O 20-43 | 497-3 | 59-1 | 636-9 | 59-5 220 23:06 || 487-3 | 59-2 || 630-4 | 59-2 22 0 23-30 | 487-0 | 60-0 | 634-8 | 60-0 ug. 5 0 O 24-71 ||499.7 | 61-3 ||623-7 | 60-9 | Aug.12 0 0 27-60 || 485-7 | 62-9 | 623.4 | 62.3 2 0 25-98 ||503-1 | 63-1 || 646-0 | 62-4 210 33-00 | 515-5 | 67-0 | 621-0 | 65-6 4 0 23-24 || 509-5 | 64-4 | 628-8 | 63-5 4 0 23-32 || 512-2 | 70-0 | 634-2 | 68-3 6 0 23-39 |516-4 | 64-2 || 615-9 | 63-5 6 O 20:47 | 514.4 | 71-9 | 628-2 | 70-0 8 0 19:40 ||516-0 | 63-2 || 647-9 | 63-0 8 0 17-49 | 507-7 | 69-7 || 635-5 | 68-5 10 0 22-50 ||506-3 | 61-9 |) 633-1 | 61-8 10 0O 20-62 | 507-5 | 69-1 || 628-9 | 68-3 6 18 0} 25 20-37 | 499.4 | 56-9 || 612-5 | 57-1 | Aug.13 18 O|]| 25 18.37 || 494-0 | 61-7 || 632-8 | 62-3 20 O 18:65 ||494-4 | 56-6 ||615-9 | 56-7 20 O 17-62 ||489-0 | 61-0 | 641-7 | 61-4 22 0 21-61 ||490-6 | 57-5 || 620-7 | 57.4 22 0 19-87 | 486-0 | 61-7 || 652-7 | 61-9 7 0 0 23-90 ||497-3 | 59-0 || 606-4 | 58.5 | Aug.14 0 O 97-54 ||485-7 | 64-1 || 630-6 | 63-6 2 10 26-80 || 501-9 | 60-6 || 610-1 | 59-7 2 0 30-65 || 508-4 | 68-0 || 642-3 | 66-5 4 0 24-38 ||507-2 | 61-0 || 619-6 | 60-2 } 4 0 28:00 ||508-8 | 70-4 || 648.2 | 67-6 6 0 23:66 ||514-9 | 61-0 || 630-4 | 60-4 6 0 25-78 || 509-2 | 69-4 || 657-7 | 67-4 Sr 0 17-34 ||519-7 | 61-0 || 636-0 | 60-5 8 0 23-21 || 514-7 | 68-0 | 663-8 | 67-2 10 0 22-67 ||510-3 | 61-2 || 622-0 | 60-6 10 O 20-60 || 503-4 | 66-2 || 618-6 | 65-7 18 0} 25 17-98 ||497-9 | 60-S ||576-1 | 60-5 18 0} 25 20-41 |498-1 | 60-0 || 652-0 | 60-3 20 O 17-17 || 494-8 | 60-7 || 609-9 | 60-5 20 0 19.24 ||493-8 | 60-0 || 651-7 | 60-0 22 0 21-05 || 486-2 | 61-3 || 609-7 | 61-0 22 0 23-93 ||489-5 | 60-7 || 638-9 | 60-6 BO 67 26-06 || 489-1 | 62-5 ||590-0 | 61-9 | Aug.15 0 0 29.26 ||490-0 | 61-2 || 627-3 | 61-0 2 0 30-12 || 497-3 | 63-4 || 604-3 | 63-5 2 0 30-22 ||499-4 | 62-4 || 641-7 | 62-0 4 0 26-72 ||511-8 | 65-7 || 624-5 | 64-6 4 0 26-64 || 505-2 | 64:0 | 654-4 | 63-2 G6 0 22-43 | 503-7 | 66-4 || 647-4 | 65-5 6 0 93-79 ||508-5 | 64:6 || 655-8 | 63-7 8 0 16-65 ||512-1 | 65-9 || 665-8 | 65-1 8 0 29.63 ||507-5 | 64-3 | 643-0 | 63-5 10 O 19-47 || 507-1 | 64-0 |) 622-1 | 63-9 10 O 22:09 ||512-1 | 63-6 || 635-1 | 63-1 18 0O|| 25 37-51 || 461-8 | 60-6 || 475-2 | 60-7 18 0] 25 19-34 ||502-4 | 61-6 || 640-9 | 61-5 20 0 19:49 || 498-1 | 60-4 | 537-5 | 60-5 20 0 20:65 || 495-7 | 61:3 || 645-5 | 61-3 22, 0 21-95 ||478-8 | 61-0 || 605-6 | 61-0 22 0 22-92 ||492-4 | 61-7 || 641-6 | 61-5 gO: 0 25-88 ||492-8 | 63-3 ||585-2 | 62-8 |Aug.16 0 O 26-96 || 492-0 | 63-0 || 631-8 | 62-5 270 31:04 ||496-6 | 66-4 |/613-8 | 65-4 | ) 27-53 || 504-6 | 65-2 || 632-2 | 64.2 4 0 26:08 || 515-4 | 69-6 ||619-5 | 67-8 | 4 0 26-43 ||511-2 | 68-9 | 633-4 | 67-1 6 0 21-01 ||508-6 | 70-2 || 641-8 | 69-5 6 0 21-48 ||510-0 | 71-0 || 643-0 | 68-0 8 0 20-61 || 496-4 | 68-0 || 644-8 | 66-5 8 0 22-63 ||511-8 |} 71-1 || 634-2 | 69-0 10 O 0 O 22-79 {510-3 | 69-0 || 629-7 | 67-9 23-88 ||506-3 | 67-0 || 628-3 | 66-0 1 DECLINATION. Torsion removed, circle reading,—Aug. 44 7, 67°; 54 3h, 63°; 104 23h, 69°; 134 23h, 81°.* Biri~ar. k=0:0001205. BALANCE. k=0:000015 approximately. . Aug. 74 2h, Walue of the torsion co-efficient determined for the Declinometer suspension thread. Aug. 114 0h—134 29h, Magnet with short scale placed in the Declinometer, on account of observations for absolute horizontal ators: }See Introduction. * Aug. 124 3, Declination magnet removed, and the deflection magnet substituted, in order to determine its time of vibration. MAG. AND MET. oss. 1843. 18 DAILY OBSERVATIONS OF MAGNETOMETERS, AuGusT 16—30. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. Mean Time of DrEcuina- || Mean Time of DEciina- ||———-————_- = Declination TION. Cor- |Thermo-|} Cor- |Thermo Declination TION. Cor- |Thermo-|| Cor- |'Pher m Observation. rected. | meter. || rected. | meter. Observation. rected. | meter, || rected. | meter Y Se. Div. 8 Mice. Div. 17:99 || 502-1 | 64:3 || 642.9 19-06 || 496-3 | 63-9 || 644-3 22:02 || 491-3 | 64-4 || 640-2 27-14 || 493-2 . 623-9 28-55 . . 631-9 25-34 : : 617-2 23-44 : : 633-6 23-17 3: : 644-1 21-78 ° : 638-5 19-56 : : 638-2 20-07 : . 650-9 21-95 : . 655:8 25-27 : . 649-3 27-83 . . 635-4 26-72 . . 639-7 24-60 . : 663-6 23:48 : . 670-7 23-26 . . 665-6 20-57 . 16: 658-5 19-02 . : 671-5 23-09 : : 674-3 649-3 ‘0 | Aug. 26 0 652-3 . 2 652-0 : 4 661-8 : 6 667-7 E 8 679-9 | 73- 10 672-8 . Aug. 27,18 680-9 692-8 671-6 518-1 . 676-9 512-0 . 691-1 511-0 : 682-9 512-2 : 673-5 509-9 . 674-6 507:7 . 673:4 504-9 ‘7 \| 670-8 498:5 . 666-8 498:°8 . 663-3 487-4 : 675-0 504:7 : 718-9 519-0 : 731-3 522-5 : 741-8 511-9 f Se. Div. Mice. Diy. 17-47 || 499-8 16-91 486-9 19:44 || 484-0 24-69 | 495-4 25-68 510-2 24.52 || 521-6 21-05 || 516-7 20-10 511-3 21-34 || 510-2 19-00 || 503-5 1853 || 491-5 23-61 || 481-6 26-89 || 495-2 29-29 || 503-3 25-24 ||515-1 21-29 || 516-2 19-83 || 508-5 21-73 || 506-4 16-37 || 494-9 16-53 || 488-3 22-08 || 485-3 28-20 || 487-9 28:01 || 505-0 24-47 || 505-3 21-07 || 507-6 21-31 || 508-7 18-80 || 509-8 20-34 || 503-5 19-76 || 497-3 20:07 || 491-2 25-22 || 492-8 29-93 || 510-0 27-54 |) 511-5 23-73 || 512-8 21-66 || 512-4 21-46 || 510-2 19-60 || 505-3 17:78 || 496-3 20-57 || 486-7 26:55 || 490-6 30:65 || 508-9 27-11 | 517-1 22:99 || 524-3 21-21 1514-0 20-70 || 513-5 483-9 487-9 483-1 490-3 506-6 518-3 527-7 511-9 524-8 | 62-7 18-92 || 507-3 17-27 || 495-0 20-60 || 492-8 27-29 || 496-6 29-39 || 507-1 23:51 || 512-1 20-98 || 517-8 19-12 || 515-3 : 19-80 || 513-3 | 62-7 m. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DECLINATION. Torsion removed, circle reading,—Aug. 204 23h, 86°; 214 7», 92°; 244 7h, 92°; 304 3h, 98° BiFiLar. k=0-0001205. Bavance. k=0-000014* approximately. Aug. 214 0h—4h, Magnet with short scale in the Declinometer. Aug.21d7h. Deflection magnet vibrated in the Declinometer box. Aug, 234 (h—24d Gh. Magnet with short scale inserted in the Declinometer box, and the Balance magnet removed, in order to determine its temperature 6ot rection. The Declination and Bifilar readings are corrected for the effect of the Balance. * Aug. 24d 7h, Balance needle vibrated horizontally in the Declinometer box, and afterwards adjusted. Aug. 30d 4h—Sept. 12d 22h, Magnet with short scale in the Declinometer box, while the magnet with the long scale was used in the Extra Declinometer bo: temperature experiments and intensity observations. DAILY OBSERVATIONS OF MAGNETOMETERS, AUGUST 30—SEPTEMBER 13. 1843. Gottingen Mean Time of Declination Observation. h. 18 20 22 ug. 31 0 a. ug. 30 pt. 1 O pt. 2 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DECLINA- TION. BIFILAR. Thermo- Cor- rected. | meter. Se. Div. 510°3 304-2 494-3 493-7 504-0 510-3 512-0 516-0 516-1 506-0 504-2 494-8 504-7 514-3 525-1 491-8 511-8 503-5 505-4 478-0 483-5 485-6 492.4 503-8 507-5 503-6 516-1 500-3 495-0 495:8 498-0 503:4 57-6 57-3 57:8 60-3 64:0 66-9 67:3 66-8 65-5 514-2 505-5 512-0 486-0 491-5 501-1 481-7 496-9 497-5 505-5 509-9 507-7 505-5 511-0 496-4 489-9 499-1 506-0 504-9 507-1 510-2 518-4 BIFILAR. k=0°0001205. BALANCE. Cor- rected. Mie. Div. se neee Seer tte eee st eeee et eeee ee eeee eee eee eeeeee wees eect sea eee wae aee eee eee eh ee ee Thermo- meter. 57-6 57-4 57-8 se eeee seeeee Senne eeaeee ee enee se eeee eee eee ee neee sane eteeee ee neee eeeeee eseces es eeee eee eee seeeee se eeee eeeeee eee ee Gottingen Mean Time of Declination Observation. di) he Sept. 6 18 Sept. 7 0 Sept. 8 0 Sept. 9 0 DM ig?) no} BP — i o — Sept. 12 pa coowoceco eoocooecseoo ecseecoocooocoocooo coeoeoeooeoeeo ooo cooCccoc.e oa SCOQK DECLINA- TION, 25 17-92 17-43 17.45 24-28 27-07 24.45 19-57 19-87 19-18 20-17 18-07 18-93 25:46 27.20 25-12 21-07 20:55 16-18 20-92 18-00 22-85 27-46 30-33 23-68 26-88 20-40 13-89 23-66 23-40 23-32 29-25 28-83 24-63 22-21 19-65 16-08 22-05 18-11 19-59 26-62 26-86 25.68 24-11 21-22 19-44 18-97 17-49 19-72 23-79 27-56 23-95 20-41 19-13 13-82 19 BALANCE, DECLINATION. Torsion removed, circle reading,—Sept. 44 1», 53°* ; 124 23h, 82°. k=0'000013* approximately. BIFILAR. BALANCE. Cor- |Thermo-|| Cor- |Thermo- rected. | meter. |} rected. | meter. Se. Div. Ql Mie. Div. 2 505-0 | 61-8 || 800-2 | 62-3 489-3 | 60-2 || 839-2 | 60-7 489-2 | 60-5 || 848-7 | 60-9 494-8 | 62-9 | 834-2 | 62-6 499-6 | 66-0 || 840-1 | 65-2 510-1 | 69-9 || 838-6 | 68-1 506-3 | 72-1 839-5 | 70-5 511-2 | 71-6 |/816-1 | 69-7 509-1 | 69-6 | 816-2 | 68.5 506-9 | 59-8 || 813-8 | 60-4 496-4 | 58-6 || 844-2 | 59-0 491-3 | 58-8 || 862-0 | 59-0 493-9 | 61-9 || 847-0 | 61-5 495-9 | 67-0 || 850-2 | 65-5 518-2 | 71-8 || 837-1 | 69-5 508:7 | 74:9 || 860-9 | 72-4. 507-6 | 74:0 || 823-7 | 72-0 506-7 | 71-9 || 811-0 | 70-6 504-8 | 63-2 || 808-0 | 63-6 496-0 | 62-0 || 826-0 | 62-5 482-9 | 61-9 || 840-6 | 62-3 490-7 | 64-3 || 829-3 | 64-1 505-3 | 68-9 || 822-3 | 67-5 524-0 | 72-6 || 868-2 | 70-9 504-5 | 74-4 || 864-0 | 72-5 512-7 | 73-0 || 834-3 | 71-6 504-1 | 71-0 || 823-7 | 70-0 501-6 | 63-0 || S66-2 | 63-0 494-7 | 62-9 || 869-7 | 63-0 491-8 | 63-2 || 824-4 | 63-2 495-2 | 65-0 || 829-0 | 64-6 504-1 | 66-8 || 836-8 | 66-0 511-8 | 68-8 || 834-5 | 67-5 507-5 | 68-9 || 833-0 | 67-7 513-5 | 67-6 || 832-9 | 66-9 506-5 | 66-2 || 823-3 | 66-0 507-9 | 63-2 || 822-0 | 63-5 505-0 | 62-9 || 823-8 | 63-0 492.5 | 62-9 || 816-0 | 63-0 494-3 | 63-4 ||815-2 | 63-5 500-1 | 65-0 || 830-6 | 64-5 516-0 | 67-4 ||845-4 | 66-3 506-2 | 69-3 || 861-9 | 67-5 514-3 | 69-0 || 833-1 | 67-5 507-5 | 67-1 || 812-3 | 66-5 501-5 | 60-1 || 792-5 | 60-5 500-2 | 59-1 || 819-1 | 59-5 493-2 | 59-2 || 831-0 | 59-5 496-5 | 61-1 || 824-5 | 60-9 509-1 | 64-7 || 830-2 | 63-7 511-0 | 67-9 || 829-5 | 66-4 502-6 | 68-7 || 842-6 | 67-0 511-6 | 67-1 818-9 | 66-0 511-6 | 64-2 ||813-7 | 64-0 )* Sept. 1454, The Balance magnet removed in order to determine its temperature correction: at 44 14 it was vibrated horizontally ‘he Declinometer box, and afterwards re-adjusted. 20 _ DatLty OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 13—27. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILAR, BALANCE, Mean Time of DeEciina- || —————_||——__]_ Mean Time of DECLINA- = ||——_——_—_ Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- Iphermo- Cor- |Ther Observation. rected. | meter. |] rected. | meter. Observation. rected. | meter, || rected. | mete f Gh 1G Tah ° 2 Se. Div. ° Mic. Div. ° d.-h. m. 2 4 Se. Div. ° Mic. Diy. ° i Sept.13 18 0|| 25 19-26 |/504-3 | 55-2 || 832-7 | 55-9 Sept. 20 18 0]| 25 20-41 ||503-0 | 64-7 | 777-1 | 65 20 O 17-42 ||508-8 | 54-8 || 843-0 | 55-2 20 O 15-17 || 505-4 | 64-0 || 787-7 | 64.4 : 22 0 19-94 |/501-5 | 55-2 || 861-0 | 55-5 22 0 18-62 || 492-8 | 64-0 || 801-8 | 64. | Sept.14 0 0 22:90 ||502-6 | 57-9 ||842-5 | 57-4 | Sept.21 0 0 23-09 || 496-7 | 65-4 || 805-3 | 65-4 2 0 26-17 ||511-3 | 61-3 || 825-0 | 60-0 2 0 26:32 || 500-0 | 67-3 || 799-6 | 67-€ 4 0 23-79 ||511-4 | 64-7 || 827-0 | 63-0 4 0 26-45 || 512-1 | 69-7 || 799-2 | 68.4 6 0 20-37 ||516-1 | 65-9 || 831-5 | 64-0 6 0 22-43 || 506-3 | 70-8 || 828-9 | 69. 8 0 15-83 || 510-7 | 64-9 || 842-5 | 63-6 8 0 8-46 || 505-1 | 68-9 || 829-1 | 68-¢ 10 0O 17-81 || 512-1 | 63-6 || 830-3 | 63-0 10 O 18-75 ||509-6 | 66-8 || 812-0 | 66-9 18 O|| 25 18-82 ||510-6 | 60-2 ||/816-1 | 60-4 18 0} 25 19-56 || 495-8 | 57-3 || 768-9 | 58.9 20 O 16:80 || 508-4 | 60-1 || 830-0 | 60-1 20 O 19:00 ||500-5 | 55-9 ||791-7 | 566 f 22 0 17-99 || 501-3 | 60-7 || 832-0 | 60-5 22,0 21-51 || 493-1 | 55-9 || 821-7 | 564 f Sept.15 0 O 23-34 || 502-1 | 62-1 || 809-6 | 61-7 | Sept.22 0 0 24-87 || 499.0 | 58-3 k 240 25-81 || 507-6 | 65-3 || 816-5 | 64-2 220 27-58 || 518-1 | 62-9 4 0 22-32 || 505-2 | 68-3 || 816-0 | 66-6 4 0 26:19 || 517-1 | 67-4 6 0 19-37 ||514-7 | 69-7 || 803-4 | 67-6 6 0 22-92 ||516-3 | 70-0 8 0 19-13 1511-8 | 68-7 || 799-3 | 67-0 8 0 18-55 || 513-5 | 69-0 10 20 19-15 1512-3 | 65-7 || 796-0 | 65-2 10 O 14-72 || 507-1 | 67-0 18 0} 25 17-61 ||510-7 | 59-0 ||817-5 | 59-4 18 O|| 25 20-11 || 500-3 | 57.4 20 O 16-87 || 506-1 | 58-0 ||834-5 | 58-5 20 O 20:03 ||501-2 | 56-1 22 0 20-10 || 501-0 | 58-2 || 840-6 | 58-4 22 0 20-32 || 490-2 | 56-1 | Sept.16 0 0 24-94 |/501-2 | 60-9 || 821-5 | 60-5 | Sept.23 0 0 26-08 || 501-4 | 58.4 2 0 24-71 ||511-2 | 64:0 || 826-9 | 63-2 2..0 26-22 ||512-3 | 63-1 4 0 21:10 || 506-9 | 67-2 || 823-2 | 65-8 4 0 24-33 ||518-0 | 67-7 6 0 19:94 1514-3 | 68-2 || 826-1 | 66-9 6 0 15-19 || 526-9 | 70-7 8 0 19-40 || 516-4 | 67-9 || 807-8 | 66-8 8 0 20-01 || 512-2 | 70-0 HO 0) 18:99 ||516-1 | 66-5 || 806-3 | 65-9 10 0 19-83 ||511-3 | 68-1 | Sept.17 18 0] 25 17-52 || 512-0 | 60-0 ||809-2 | 60-2 Sept. 24 18 0|| 25 18-75 || 511-2 | 59-7 ! 20 O 16-62 || 506-0 | 59-8 || 821-2 | 60-0 20 0 16-80 || 507-3 | 58-6 22 0 17-88 || 502-8 | 61-3 || 798-0 | 61-1 22 0 20-23 || 491-8 | 57-9 Sept.18 0 0 27-29 ||503-0 | 63-7 || 796-1 | 63-1 | Sept.25 0 O 24-80 || 497-9 | 57-7 my (Y) 29-48 ||510-4 | 66-0 || 793-2 | 65-0 220 26-69 | 507-6 | 58-0 4 0 23-54 |/511-4 | 65-9 || 807-3 | 65-3 4 0 21-29 || 504-4 | 58.4 6 0 22-56 || 521-4 | 65-1 || 817-7 | 64-9 6.70 18-41 || 505-8 | 57-7 8 0 20-40 ||517-6 | 64-0 || 820-9 | 63-0 8 0 10) 0) 7-65 ||519-0 | 62-6 || 796-7 | 62-6 | 10 O 18 O|| 25 19-98 ||502-9 | 55-7 || 761-4 | 56-2 J 18 0 20 O 16-40 ||495-0 | 54-3 || 813-9 | 55-0 20 0O : Zo 0 20-16 ||475-4 | 54:3 || 824-3 | 54-7 | 22) 50) }Sept.19 0 0 29-93 ||499-3 | 56-6 ||823-8 | 56-5 | Sept.26 0 0 2 0 27-19 ||512-9 | 60-0 || 828-6 | 59-3 | 20 4 0 23-79 ||510-0 | 63-1 || 823-8 | 61-8 4 0 6 0 19-29 ||509-0 | 64-3 || 838-7 | 63-0 6 0 8 0 14-01 ||507-3 | 63-7 || 846-9 | 62-6 8 0 10 0O 19-89 ||511-2 | 62-3 || 780-5 | 61-8 10 O 18 O|] 25 18-21 ||510-2 | 57-4 ||818-3 | 57-6 18 0 20 O 18-15 ||496-1 | 56-9 || 838-0 | 57-0 20 0 f 22 0 23-06 || 492-4 | 57-3 ||831-8 | 57-5 2200 | Sept.20 0 O 23:39 || 500-5 | 60-6 || 822-0 | 60-0 § Sept.27 0 0 b 2 0 28-45 || 508-8 | 63-0 || 823-9 | 61-6 2 0 4 0 28-67 ||514-7 | 65-9 || 830-2 | 64-6 4 0 6 0 19-83 || 513-3 | 66-9 || 833-6 | 65-5 6 0 8 0 16-17 ||512-4 | 66-0 |/831-0 | 65-3 | 8 0 10 0O 15-49 ||510-0 | 65-0 || 806-4 | 64-5 10 O DrEcLINATION. Torsion removed, circle reading,—Sept. 194 23h, 75°; 274 3h, 73°, BIFILAR. k=0-0001205. BALANcE. k=0:000013 approximately. Sept. 264._The Declination and Bifilar Magnetometers were supplied with closely fitting rectangular boxes, placed within the cylin } drical boxes, for the purpose of destroying currents of air. The boxes of all the Magnetometers were covered inside and outside wit | gilt paper. The box of the Balance Magnetometer was removed after the observation at 45, and replaced before that at 64. DAILY OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 27—OcTOBER 11. 1843. 21 Gottingen Mean Time of Declination Observation. d. oh. pt. 27 pt. 28 pt. 29 t. 1 DECLINA- TION. 25 25 25 25 BIFILAR. BALANCE. Gottingen DECLINA- Mean Time of TION. Cor- |Thermo-|| Cor- |Thermo- Declination rected. | meter. || rected. | meter. Observation. ° ’ Se. Div. 0 Mice. Diy. 0 (Jats m. 25 20-32 || 507-6 | 45-9 759-7 | 46-5 | Oct. 418 0O 22.20 | 506-4 | 45-1 780-3 | 45-9 20 O 23-66 ||478-5 | 45-3 822-2 | 45-9 22 0 31-36 | 480-1 | 47-3 823-9 | 47-2 | Oct. 5 O O 30-89 ||501-2 | 50-0 || 838-2 | 49-1 2 0 28-70 511-6 | 51-5 855-4 | 50-3 4 0 23-06 ||512-4 | 51-9 || 847-0 | 50-7 6 0 22.95 ||510-4 | 51-0 || 832-2 | 50-4 8 0 20-57 || 509-4 | 50-0 || 835-2 | 49-9 10 O 25 20-79 ||504-7 | 44-9 || 809-1 | 45-9 18 0 21-39 ||504-8 | 43-9 || 820-4 | 45-0 20 O 20-79 ||493-2 | 44-1 847-3 | 45-0 22 0 25:05 ||495-4 | 46-2 ||812-5 | 46-4 | Oct. 6 O O 27-29 ||508-4 | 50-0 || 812-0 | 49-0 9 0 96-45 ||519-7 | 51-9 817-7 | 50-5 4 0 23-83 515-7 | 52:3 ||842-1 | 51-1 6 0 17:99 ||502-9 | 52-1 854-3 | 51-1 8 0 21-10 |511-4 | 51-9 || 831-5 | 51-1 10 O 25 19-36 | 513-8 | 51-9 || 778-4 | 51-4 18 0 23-14 || 506-8 | 52-2 || 795-1 | 51-7 20 O 22-25 508-2 | 53-6 791-7 | 52-8 22 19 25-38 502-2 | 56-7 || 782-8 | 55-5 | Oct. 7 O O 24-85 500-8 | 60-0 793-4 | 58-2 2) 0 26:43 514-9 | 61-9 || 789-0 | 60-0 4 0 23-93 504-9 | 62-6 || 824-4 | 61-0 6 0 23-14 511-3 | 61-8 ||801-7 | 60-6 8 0 20-63 512-9 | 60-8 782-4 | 60-1 10 O 25 21-24 ||504-1 | 57-0 ||764-3 | 57-6 | Oct. 8 18 O 23-53 ||497-9 | 56-1 779-5 | 56-9 20 O 23-21 494.2 | 56-1 791-0 | 56-6 22 0 27-47 ||498-4 | 57-0 ||789-5 | 57-2 | Oct. 9 O O 28-15 || 503-1 | 58-6 || 792-2 | 58-1 Zn 23-27 489-9 | 59-7 ||811-1 | 59-0 4 0 23-39 ||510-8 | 60-0 801-6 | 59-2 6 0 21-32 ||509-0 | 58-7 805-4 | 58-4 8 0 22-30 || 505-3 | 57-0 797-:3 | 57-1 10 O 25 22-16 ||506-5 | 51-6 || 792-6 | 52-2 18 0 31-04 || 497-6 | 51-2 || 768-6 | 51-7 20 0 25-19 ||497-4 | 51-5 || 789-5 | 51-5 74?) 31-32 | 493-9 | 52-6 824.3 | 52-4 | Oct. 10 0 O 28-15 506-0 | 54-3 || 801-3 | 53-6 2 0 25-43 ||507-0 | 55-7 || 806-5 | 54-9 4 0 22-62 ||508-5 | 56-0 808-8 | 55-4 6 O 18-53 506-4 | 56:0 ||810-9 | 55-4 8 0 20-88 ||511-7 | 55-7 798-2 | 55-2 10 O 25 23-32 503-2 | 53-8 794-7 | 54-0 18 0 21-37 ||505-5 | 53-6 || 804-2 | 53-5 20 O 23-17 ||498-6 | 53-9 || 812-5 | 53-9 22) 0 27-51 500-3 | 55-9 812-1 | 55:0 | Oct. 11 0 O 30-02 512-6 | 57-9 || 801-1 | 56-8 4, M0) 25-14 | 519-3 | 60-3 803-1 | 58-8 Ae 0 21-59 |513-8 | 61-3 789-6 | 59-8 6 O 22-96 ||515-0 | 61-0 || 781-3 | 60-0 SO 21-02 ||510-5 | 60-5 781-2 | 59-8 10) 0 DECLINATION. ‘Torsion removed, circle reading,—Oct. 64 14, 88°. BIFILAR. k=0:0001205. MAG. AND MET. ozs. 1848. BIFILAR. BALANCE. Cor- |Thermo-| Cor- |Thermo-| rected. | meter. || rected. | meter Se. Div. 2 Mic. Div. Q 511-4 | 58-1 || 737-3 | 58-3 506-2 | 57-9 || 747-0 | 58-0 486-7 | 57-9 || 781-0 | 57-9 493-6 | 58-2 || 770-2 | 58-1 505-4 | 60-0 || 782-8 | 59-1 513-2 | 61-6 || 798-4 | 60-4 505-2 | 61-5 || 849-6 | 60-5 507-4 | 60-8 || 802-9 | 60-3 506-0 | 60-1 766-3 | 60-0 503-2 | 58-7 || 746-7 | 58-5 501-4 | 58-7 || 777-2 | 58-5 490-9 | 58-7 ||779-0 | 58-5 491-3 | 59-2 || 765-6 | 58-9 506-2 | 60-6 || 782-3 | 59-9 512-4 | 61-1 | 790-7 | 60-5 506-6 | 61-1 || 785-4 | 60-7 508-6 | 60-7 || 775-7 | 60-4 502-2 | 59-9 ||775-1 | 59-8 502-8 | 56-7 ||'757-1 | 57-0 504-3 | 56-4 || 775-2 | 56-6 489-1 | 56:9 | 782-4 | 57-0 492.8 | 58-1 | 775-1 | 57-9 504-7 | 60-0 || 767-4 | 59.2 513-5 | 62:0 | 776-5 | 61-0 512-5 | 62:0 || 765-9 | 61-0 511-6 | 60-5 || 761-6 | 60-0 507-1 | 59-1 || 767-6 | 59-3 505-4 | 48-3 || 806-6 | 49.2 505-7 | 47-7 ||815-1 | 48-5 492.7 | 47-8 ||820-1 | 48-4 489-6 | 49-1 ||822-1 | 49.2 499-3 | 50-2 ||810-1 | 49.9 506-9 | 50-8 ||814-6 | 50-3 508-3 | 50-7 || 822-1 | 50-1 513-8 | 50-1 | 814-5 | 49-9 510-7 | 49-7 ||814-6 | 49-6 511-7 | 47-7 ||812-8 | 48-0 505-5 | 47-2 || 823-3 | 47.6 499-1 | 47-2 ||819-2 | 47-5 494.0 | 47-7 || 811-2 | 47-8 508-4 | 48-7 |1808-5 | 48-5 509-0 | 49-9 || 810-1 | 49-3 512.4 | 50-1 |/§11-8 | 49.5 505-5 | 49-3 || 818-8 | 49.0 499-9 | 48-1 || 809-2 | 48-3 510-5 | 45-2 ||808-7 | 45-9 504-4 | 44-9 | 819-8 | 45-5 494.6 | 44-9 [818-4 | 45-2 497-6 | 44-9 || 805-6 | 45-3 504-3 | 45-1 || 811-1 | 45-5 517-1 | 45-3 ||819-2 | 45-5 514-5 | 45-3 || 819-9 | 45-5 513-0 | 45-0 || 821-3 | 45-4 513-7 | 45-0 | 815-6 | 45-2 BALANCE. &=0:000013 approximately. 22 DAILY OBSERVATIONS OF MAGNETOMETERS, OCTOBER 11—25. 1843. Gottingen BIFILAR, BALANCE. Gottingen BIFILAR. BALANCE, Mean Time of D&ECLINA- Mean Time of DECLINA= —|——————————— sl Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thery Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | mete dh m. o' Nand Se. Div. G Mic. Div. 2 Gob MiG. Paso pe ES Se. Diy y Mie. Diy. b Oct. 11 18 0|/ 25 22-08 | 510-5 | 43-3 || 819-2 | 43-8 | Oct. 18 18 0) 25 16-89 ||514-2 | 53-6 || 754-6 | 54 20 0 20-82 || 507-5 | 43-2 ||818-9 | 43-5 20 0 16-43 514-5 | 53-4 || 794.0 | 54. 22 0 20-52 || 496-4 | 43-1 || 819-4 | 43-5 22 0 17-88 || 500-3 | 52-0 || 820-2 | 54¢ Oct. 12 0 0 26-84 || 500-7 | 43-8 |) 805-5 | 44:0 | Oct. 19 0 O 22-65 ||503-8 | 53-7 || 805-8 | 55. 2 0 28-17 || 506-8 | 44-9 || 813-0 | 44-7 2 0 24-53 ||516-0 | 56-0 || 786-9 | 57. 4 0 23-79 || 513-2 | 46-1 || 825-4 | 45-5 4 0 22-08 ||518-8 | 58-3 || 792-9 | 58. 6 0 23-23 || 515-6 | 47-0 || 814-9 | 46-0 6 0 18-12 || 512-8 | 58-6 || 813-0 | 59. 8 0 22-22 1515-4 | 45-9 ||813-7 | 45-5 8 0 19-71 || 512-3 | 58-1 || 816-2 | 59) 10 0 19-56 ||/510-8 | 44-0 |) 802-1 | 44-4 10 0 15-69 ||516-8 | 56-8 || 813-8 | 584 18 0] 25 20-70 || 508-1 | 37-7 || 820-8 | 38-9 18 0] 25 17-98 ||497-1 | 47-7 759-3 | 49% 20 0 20:50 | 504-3 | 36-9 || 826-0 | 38-0 20 O 18-59 || 495-8 | 46-9 || 807-5 | 48. 22 0 21-24 || 499-5 | 37-1 ||826-8 | 38-0 22 0 19-72 || 490-3 | 46-9 |) 826-0 | 48. Oct: 1305 10 28-32 ||500-6 | 39-1 ||821-0 | 39-5 | Oct. 20 0 O 25:95 ||497-2 | 47-8 || 837-4 | 48. 2 0 30-13 || 513-5 | 42-0 || 835-5 | 41-5 2 0 25-10 |/511-0 | 49-0 || 836-1 | 49 4 0 27-20 || 514-6 | 43-7 || 865-5 | 43-0 4 0 23-40 ||513-8 | 49-7 || 838-2 | 49. 6 0 23-50 || 513-7 | 43-6 || 848-7 | 43-0 Gre0 22-23 ||514-9 | 49-9 || 833-0 | 49 sh (0) 22:79 || 512-6 | 42-4 ||839-7 | 42.4 8 0 20-65 || 506-4 | 49-5 || 847-1 | 49 10 0 22-43 ||512-9 | 41-1 || 833-0 | 41-5 10 0 21-02 | 510-6 | 49-2 || 830-7 | 49) 18 0O|| 25 21-29 || 508-5 | 37-9 || 820-7 | 38-7 18 O} 25 20-47 | 510-3 | 48-0 || 818-4 | 48 20 O 20:30 ||512-5 | 37-5 || 824-6 | 38-3 20 0 20-25 ||507-3 | 48-0 || 830-1 | 48 22 0 27:29 || 490-3 | 37-9 || 847-7 | 38-5 22 0 21-30 || 503-0 | 48-3 || 836-6 | 48 Oct. 14 0 O 28-57 || 502-4 | 40-2 || 841-2 | 40-2 | Oct. 21 0 O 24-00 || 505-9 | 48-9 || 829-8 | 48 20 27-98 ||517-0 | 43-6 || 830-7 | 42-5 2 0 24:52 ||509-9 | 50-0 || 828-1 | 49 4 0 25-14 ||517-5 | 45-6 || 841-2 | 44.3 4 0 22-42 ||514-4 | 51-5 || 828-4 | 50 6 0 22-65 ||518-4 | 46-2 || 839-5 | 45-0 6 0 22:17 ||516-2 | 52-0 | 813-8 | 50 8 0 22-72 || 509-9 | 45-0 || 868-5 | 44-5 8 0 21-24 514-9 | 51-1 ||813-3 | 50 10 0 17-59 || 501-9 | 43-0 || 832-7 | 43-0 10 0 21-20 | 511-8 | 49-3 || 814-6 | 49 Oct. 15 18 0] 25 21-91 | 504-6 | 34-9 || 814-2 | 36-2 | Oct. 22 18 0] 25 20-77 ||511-1 | 49-9 || 797-4 | 50 20 0 23-91 |) 494-6 | 34-0 || 827-2 | 35.4 20 0 19-95 ||508-0 | 49-4 ||812-0 | 49 22. 0 24-13 || 493-2 | 34-0 || 834-1 | 35-0 22 0 21:90 |/499-0 | 49-5 || 817-4 | 49 Octs 16-205 70 27-33 ||491-8 | 36-2 || 845-0 | 36-5 | Oct. 23 0 0 26:02 ||504-5 | 50-2 || 808-3 | 56 2 0 25:96 || 512-8 | 39-9 || 856-0 | 39-3 2a) 25:87 ||510-8 | 51-2 || 816-4 | 504 4 0 25-25 ||519-9 | 42-9 || 860-0 | 41-7 4 0 22-25 ||514-2 | 51-7 || 823-1 | 52 6 0 22:36 ||520-3 | 43-3 || 858-4 | 42-4 6 0 22:05 ||515-8 | 51-3 || 805-5 | 50:9 8 0 20:72 || 521-0 | 42-7 || 828-5 | 42-0 8 0 21-33 515-1 | 51-1 || 807-1 | 508 10 0 12-36 || 549-3 | 41-5 || 828-9 | 41-5 10 0 20-77 || 513-1 | 51-2 ||810-8 | 50:8 18 0] 25 21-88 | 508-4 | 38-7 || 844-6 | 39-4 18 0] 25 20-25 | 514-6 | 49-3 || 800-8 | 49-5 20 0 24-60 || 494-3 | 38-5 || 841-9 | 39-2 20 0 19-40 | 508-9 | 48-7 || 814-2 | 49:0 22 0 24-01 || 497-9 | 38-3 || 840-3 | 39-0 22 0 19-55 | 496-0 | 48-4 || 818-6 | 48% Oct? 17-707 10 24-89 ||495-9 | 38-5 || 846-4 | 39-0 | Oct. 24 0 O 26:86 || 502-7 | 48-6 || 809-9 8-7 2 O 18-41 || 492-4 | 39-3 || 901-7 | 39-7 2 20 28-14 ||503-9 | 48-6 |] 819-3 4 0 25-32 || 508-5 | 39-1 || 884-6 | 39-5 ae (0) 23-13 || 508-5 | 48-0 || 831-9 3 22-25 || 507-3 | 39-0 || 889-7 | 39-5 6r.10 21-67 || 514-3 | 47-1 | 813-4 8 0 22-67 ||507-6 | 38-9 || 855-6 | 39-3 8 0 21-13 ||512-0 | 46-2 ||812.4 10 0 22-58 ||512-3 | 38-3 | 843-6 | 39-0 10 0 19-95 ||506-7 | 45-1 || 821-9 18 0} 25 22-32 |500-3 | 34-9 || 833-0 | 36-0 18 0] 25 19-65 |510-9 | 40-2 || 825-2 20 O 20:90 || 494-7 | 34-1 || 846-6 | 35-4 20 0 20-90 ||508-5 | 39-6 || 827-6 22 0 20-77 || 494-8 | 34-2 || 851-6 | 35-6 22 0 22-57 | 496-2 | 39-3 | 833-3 | 40 Oct. 18 0 O 24-67 || 494-7 | 36-8 || 837-9 | 36-8 | Oct. 25 0 0 24-86 | 504-3 | 41-0 | 827-5 | 4 2 0 27-50 || 518-5 | 42-0 |] 830-6 | 41-7 0 25:65 ||511-0 | 43-6 |) 820-7 4 0 24-52 || 521-8 | 45-9 || 827-0 | 45-0 | 4 0 23-00 ||514-0 | 46-1 || 842-6 6 0 23-00 || 519.6 | 49-0 || 832-8 | 47-8 6 0 23-28 517-6 | 47-2 || 840-1 8 0 23-29 || 514-9 | 48-2 || 832-7 | 47-7 8 0 21-11 515-3 | 46-2 || 820-4 10 0O 16-11 || 518-9 | 49-9 | 816-5 | 49-8 10 0 20-34 ||510-9 | 44-9 || 820-8 DECLINATION. ‘Torsion removed, circle reading,—Oct. 1441», 97°; 174 23h, 100°; 184 92, 110°;* 194 23h, 93°. “ BIFILAR. k=0:0001205. BALANCE. k=0:000013 approximately. 7 * Oct. 184 0h—8h, Magnet with short scale in the Declinometer box. 3, t Oct. 194 22h_95¢ 22h, Magnet with short scale in the Declinometer box. : DAILY OBSERVATIONS OF MAGNETOMETERS, OcTOBER 25—-NOVEMBER 7. 1843. 23 Gottingen Mean Time of DECLINA- Declination TION. Observation. Gans, m. G G cet. 25 18 O]|| 25 19-18 20 O 24-82 Ze 0 21-97 m26o06 60 CUO 25-27 2 0 26-28 4 0 22-99 6 0 19-26 8 0 20-34 10 0O 1-14 18 O]] 25 21-04 20 O 20-13 22 0 19-93 om 27 0 0 25-90 2 0 24-17 4 0 20-40 6 0 19-84 8 0 20-87 10 O 19-93 18 0|| 25 20-03 : 20 O 20-57 22) 40 20-82 23 O 20-90 ,25 0 O 23-29 t 2 0 23-93 4 0 22-97 6 0 20-63 8 0 20-57 10 O 18-75 %. 29 18 0] 25 19-39 ( 20 O 18-60 22 0 19-83 f 23 O 23-32 %. 30 0 O 24.74 2 0 27-36 4 0 25-92 6 0 21-37 8 0 22-62 10 O 17-76 18 O}} 25 19-39 20 O 20-07 22° 0 21-28 | 23 0 27-70 vt. ie O° 0 26-79 ; 2. '0 23-93 4 0 22-65 6 0 18-86 8 0 12-27 10 0O 17-88 18 0O|| 25 16-85 20 O 17-96 22, (0 17-14 | 23 9 19-54 K i On 0 21-98 DECLINATION. _ sae DECLINA- TION. 25 17-07 BIFILAR. BALANCE. 25 21-98 25 19-89 25 20-60 25 20-13 19.63 19.68 21-24 23-24 24-82 24:53 20-72 20-45 18-59 Cor- rected. Se. Diy. 511-7 - 517-8 517-8 515-7 514-5 511-6 509-1 505-8 506-4 510:5 517-6 923-5 525:3 510-3 511-6 508-4 507-8 498-0 495-0 493-5 503-7 512-6 514.4 517-6 510-2 514-2 513-5 505-5 505-8 506-4 522-7 521-8 517-2 518-1 512-1 512-2 511-0 506-4 505-8 507-4 514-2 511-2 515-6 514-4 509-9 510-9 508-8 502-0 497-9 501-8 513-6 509-2 509-9 511-2 507-0 Thermo- meter. 38:3 41-0 41-9 41-4 40-2 48-0 46-7 Cor- rected. Thermo- meter. 4=0°000013 approximately. BIFILAR. BALANCE. Gottingen ———_———| Mean Time of Cor- |Thermo-|| Cor- |Thermo- Declination rected. | meter. || rected. | meter. Observation. Se. Diy. 2 Mie. Diy. o Gly. ith m. 513-9 | 39-6 ||815-3 | 40-8 | Nov. 1 2 0 507-6 | 38-8 808-5 | 40-8 4 0 497-5 | 38-7 || 824-7 | 39-6 6 0 493-4 | 40-1 853-8 | 40-6 8 0 507-9 | 42:9 || 848-7 | 42-5 10 O 500-8 | 44-9 || 879-6 | 44-0 18 0 498-8 | 45-2 ||920-7 | 44-5 20 0 508-3 | 44-6 || 861-7 | 44-3 92 0 507-2 | 42-4 || 834-1 | 42-9 23 0 507-9 | 36-3 |/s02-4 | 38.0 | Nov 2 ; 504-1 | 35-2 || 823-8 | 36-7 an to 493-8 | 35-0 || 839-2 | 36-1 6 0 493-9 | 36-5 || 850-1 | 37-0 8 0 515-1 | 39-6 || 857-8 | 39-3 10 0 507-6 | 41-3 || 877-8 | 40-8 510-3 | 41-9 || 861-5 | 41-4 18 0 512-9 | 41-8 || 846-7 | 41-5 20 O 510-6 | 41-0 || 835-0 | 41-0 22 0 23 +O 511-1 | 40-7 || 834-6 | 41:0 | Nov. 3 0 0 511-0 | 41-1 || 833-0 | 41-1 2 0 502-3 | 42-0 || 835-2 | 42-0 4 0 502-0 | 42-6 || 825-9 | 42-5 6 0 495-3 | 43-0 || 830-1 | 42-9 8 0 508-9 | 44-0 || 828-3 | 43-6 10 O 516-5 | 44-7 ||833-7 | 44-2 18 0 516-5 | 44-4 || 827-5 | 44-1 200 0 515-0 | 44:0 || 824-1 | 44-0 22 0 512-9 | 43-3 || 820-8 | 43-5 23 0 506-2 | 37-5 |s20-9 | 38-9 | Nev 4 3 A 507-4 | 36-7 || 830-3 | 38-0 4 0 495-4 | 36-3 || 841-3 | 37-5 6 0 495-0 | 36-1 || 830-2 | 37-4 8 0 494-5 | 36-3 || 836-7 | 37-4 10 0 497-2 | 36-7 || 851-5 | 37-5 507-1 | 36-9 || 873-3 | 37-5 | Nov. 5 18 0O 510-1 | 37-0 || 864-2 | 37-6 20 O 511-0 | 37-3 || 851-3 | 37-8 22 0 507-3 | 37-7 || 854-1 | 38-0 23 0 Nov. 6 0 0 512-4 | 37-5 || 826-8 | 38-0 2 0 507°8 | 37-0 || 836-9 | 37-6 4 0 498-0 | 36-7 || 842-8 | 37-4 A 491-7 | 37-0 || 840-4 | 37-5 8 0 500-4 | 38-3 || 841-4 | 38-5 10 0 511-7 | 41-8 || 841-9 | 41-0 517-1 | 44-1 || 847-1 | 43-0 18 0 513-8 | 44-6 || 846-2 | 43-5 20 0 525-2 | 43-4 || 823-0 | 43-0 22 0 509-3 | 41-7 || 824-4 | 42-0 23 0 Nov. 7 0 0 508-7 | 36-6 || 800-3 | 37-7 2 0 507-1 | 36-0 || 809-7 | 37-0 4 0 503-3 | 35-7 || 831-7 | 36-7 6 0 498-1 | 35-9 || 842-7 | 36-8 8 0 503-2 | 36-3 || 844-0 | 37-0 10 0 Torsion removed, circle reading,—Oct. 254 235, 111°; 314 15, 108°; Nov. 14 233», 109°. BIFILAR. k=0:0001205. BALANCE. Gottingen Mean Time of Declination Observation. digaby Nov. 14 2 Nov. 15 Nov. 16 Nov. 17 Nov. 18 Nov. 19 1st) DECLINA- TION. oe ° ’ 25 19-15 20-40 17-79 17-23 15-09 17-40 18-13 17-19 18-45 20-08 22-99 20-48 20-43 15-49 19-53 18-15 19-15 19-29 19-80 20-94 21-21 20-63 21-98 15-86 15-19 19-86 17-86 19-06 20-41 21-02 21-35 19-71 18-65 19-15 16-71 18-16 18-01 19-09 20-20 21-58 21-91 21-04 21-21 19-89 17-91 19-60 18-25 18-28 19-87 21-15 21-34 19-67 19-29 19-02 18-48 25 25 25 25 25 DAILY OBSERVATIONS OF MAGNETOMETERS, NOVEMBER 7— 20. 1843. BIFILAR. Cor- |Thermo- rected. | meter. Se. Div. - 508-2 | 41-0 515-8 | 43-0 513-4 | 43-6 510-2 | 42-9 503-8 | 41-8 506-7 503:5 504-6 502-0 503-3 510-4 507-9 507-5 508-2 511-7 511-6 504-9 504-8 502-7 504-6 507-6 513-4 512-8 505-3 504-5 509-7 511-7 508-9 509-0 509-2 515-7 519-1 516-7 514-5 514-4 509-8 509-0 507-2 507-3 510-8 515-4 518-4 513-6 510-0 509-7 515-7 514-7 510-4 510-3 512:3 515:8 518-2 519-6 517-1 515-6 Torsion removed, circle reading,—Nov. 74 214, 114°; 134 23h, 117°; 154 14, 1083°.|| 24 Gottingen BIFILAR. BALANCE. Mean Time of DECLINA- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. d. m. o 4 Se. Div. Y Mie. Diy. 2 Noy. 7 18 0O]] 25 20-55 508-2 | 43-1 807-4 | 43-8 20 O 19-84 505-7 | 42-2 ||811-8 | 43-0 220 18-28 501-3 | 41-7 |}811-7 | 42-4 23 0 19-77 501-0 | 41-7 ||813-0 | 42-4 |Nov. 8 0 O 21-05 503-6 | 42-0 || 812-5 | 42:5 2 20 21-43 503-4 | 42-9 | 824-6 | 43-1 4 0 92-62 ||510-0 | 43-6 || 833-2 | 43-5 6 0 18-37 || 512-2 | 43-0 || 823-1 | 43-0 8 0 18-42 508-6 | 41-8 || 822-4 | 42.0 10 O 15-45 ||499-7 | 40-1 830-0 | 40-7 18 O}| 25 19-95 501-0 | 36-2 | 804-6 | 36-9 20 O 20-92 || 511-3 | 35-6 || 795-6 | 36-2 92 O HOH |i beads) dase -- | 810-8 | 35-9 93 «OO Ot QOe |\\Meuaeciomsl: siseicer 814-9 | 35-9 |Nov. 9 O O 23-77 1456-0 | 36-4 || 814-1 | 36-2 | 2 0 22-07 || 462-6 | 37-2 || 827-8 | 37-1 4 0 19:95 ||466-0 | 38-6 || 837-1 | 38-3 6 0 19-12 ||465-4 | 38-8 || 829.7 | 38-5 8 0 18:37 ||465-4 | 38-3 || 824-8 | 38-3 10 O 17:90 ||464-1 | 38-0 || 820-0 | 38-0 18 16]; 25 18-26 || 466-1 | 37-2 | 815-5 | 37-7 20 O 18-35 ||466-1 | 37-3 || 818-7 | 37-9 2250 18:95 ||460-0 | 37-7 ||824-5 | 38-0 | 23 0 19-70 || 460-5 | 37-9 || 824-1 | 38-1 Nov.10 0 0 20-51 462-6 | 38-2 ||818-7 | 38-5 ZnO 21-33 {1466-3 | 38-9 || 822-7 | 39-0 4 0 19-98 ||465-3 | 39-6 || 838-5 | 39-5 6 0 20-08 || 467-0 | 39-9 | 831-6 | 40-0 8 0 18:37 505-2t| 42-4 ||828-0 | 40-5 10 O 18-07 507-0 | 41-9 ||811-2 | 40-7 18 O}] 25 16-87 ||510-4 | 40-8 || 808-4 | 41-0 20 O 17-62 508-9 | 41-3 | 810-8 | 41-3 22 0 19-61 501-7 | 41-9 ||818-3 | 41-8 ' 23 0 19-95 500-8 | 42-1 815-9 | 42-0 Noy. 11 0 0 21-05 501-9 | 42-7 || 818-5 | 42-5 2 0 21-69 506-0 | 43-8 || 820-1 | 43-5 4 0 20-90 507-7 | 44-9 | 814-4 | 44-5 6 O 19-08 503-2 | 45-0 || 818-7 | 44-9 8 0 18-82 ||505-2 | 45.0 ||817-8 | 44-9 10 O 16-27 506-8 | 44-7 || 816-5 | 44-7 Nov. 12 18 0] 25 18-86 || 509-5 | 40-9 || 804-4 | 41-6 20 O 17-88 520-7 | 40-9 || 803-7 | 41-6 22 0 18-63 501-3 | 41-0 || 802-8 | 41-5 93 «=O 19-31 503-0 Ale] |] wnvvee | scence Nov.13 0 0 21-91 507-4 | 41-6 coe | cease 2 0 Op Awal Ih Gil esi || 219388) | Sacade |} ataose 4 0 94.80 || 500:7 | 45-7 |} ...208 | cesces 6 0 OBER Mii | CYA) I) Bonane WP snaces 8 0 PSO NOPE 1 25368) (IP Ascaea He coseoe 10 0 16-87 ||504-1 | 45-0 ||805-0 | 45-0 18 0] 25 18-37 || 502-0 | 40-0 || 833-6 | 41-0 20 O 18-56 || 505-4 | 39-1 || 837-7 | 40-4 225 10 20-62 || 501-4 | 38-6 || 842-0 | 39-5 Pye Th 20-11 501-4 | 38-6 || 831-9 | 39-5 Nov. 14 0 0 22-87 ||503-4 | 38-9 ||827-0 | 39-8 DECLINATION. BIFILaAR. kt=0:00013800. Noy. 74 22h—15d 0h, Magnet with short scale in the Declinometer box. * Noy. 8d 22h, Bifilar magnet removed for the purpose of determining its temperature correction ; a spare magnet was substituted, and the instrum) justed, the value of k being 0:0002263. t Noy. 10d 8h, 1 Noy. 124 23h—13d 10n. Bifilar re-adjusted ; observation made at 8h 40m, A Balance magnet removed for the purpose of determining its temperature correction. || Noy. 144 2h, Detlecting magnet vibrated in the Declinometer box. BALANCE. k{=0°000014 approximately. BALANCE, Cor- Therr rected. | mete Mic. Div. 849-2 865-3 864-8 865-6 869-2 865-2 867-1 870-2 860-5 860-3 868-6 884-0 873-0 880-0 859-5 842-7 863-6 858-7 859-8 858-3 855-9 865-7 864-9 877-8 882-3 846-0 849-5 852-5 850-3 861-5 859-3 854-2 851-4 852-3 853-3 846-1 849-0 852-4 840-7 844-0 848-9 852-9 858-8 874-1 865-2 840-1 844-8 846-6 845-3 838.4 844.4 851-1 843-2 841-7 844-3 ia DAILY OBSERVATIONS OF MAGNETOMETERS, NOVEMBER 20—DECEMBER 2. 1843. 25 Gottingen BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. fean Time of DECLINA- | Mean Time of Drcuina- Declination TION. Cor- |Thermo-|| Cor- /Thermo- Declination TION. | Cor- |Thermo-|| Cor- |Thermo- Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. Se. Diy. 2 Mice. Diy. oT ° ’ o Gb ms heh 3 Me Se. Div. 2 Mice. Diy. ¢ v.20 18 0] 25 19-87 518-2 | 41.0 | 831-9 | 41-5 |Nov.27 2 0] 25 20-54 | 50.2 | 52.2 | 844-1 | 50.0 20 0] 18-35 |516-4 | 41-1 | 935-5 | 41-5 4 0] 19-02 |[518-1 | 51-9 [843-9 | 50-1 22 0|| © 17-34 ||/513-5 | 41-3 | 839-9 | 41-6 6 Ol| 18-41 | 516.6 | 50-7 | 841.7 | 49.9 23 0]| 19-20 |513-9 | 41-7 || 836-1 | 42-0 8 0] 18-38 | 516-6 | 50-0 |837-2 | 49-6 v.21 0 0] 20-95 516-2 | 42.3 | 835-9 | 49-5 10 O| 17-86 515-1 | 49.5 |'s40.5 | 49.5 ed lice |i Wane lane 18 0] 25 17.04 ||516.2 | 48.4 ||833-9 | 48-5 Oe Vesa, | sve Nees | aa 20 0|| 18-48 |517-7 | 48-3 | 831.2 | 48-5 eer ee oes | eel fare | ano 22 0|| 17-41 |/512-9 | 48-2 || 839.0 | 48.5 UE see ores | eo ore | ane 23 0 18-21 |512-1 | 48-2 |837-5 | 48-5 Nov.28 0 0] 19-63 | 512-3 | 48-2 || 36.9 | 48-5 18 0| 25 19-17 516-6 | 46-3 | 835-8 | 46-0 2 0|/ 20-88 |515-9 | 48.2 |'s40.1 | 48-7 20 0] 18-55 ||516-7 | 46-2 |s30-8 | 46-0 4 0|| 21-14 |/512.6 | 48-3 |} 351-0 | 48.7 22 0] 18-95 |/513-4 | 46.1 | 829-8 | 46-0 6 0] 20-54 | 508-4 | 48-3 |/g62-3 | 48-5 23 0] 19-83 |/513-1 | 46-0 | 825-1 | 46-0 8 | 17-94 | 511-5 | 48-2 |]880-9 | 48-7 v.22 0 0] 21-82 1514-5 | 46-1 | 822-3 | 46-2 10 O|| 17-20 |/511-3 | 48-3 | 866.0 | 49.0 MA cg ect coe tee | ace 18 0|) 25 17-78 [517-5 | 47-4 ||936-7 | 47.0 SN ace lea cee \eaee | aos 20 0] 18-01 [515-6 | 47-0 |840.0 | 46-8 Me cto coi leate | ace 22 9] 18-48 |509.0 | 46.6 ||842.5 | 46.4 REE sc eelear all asa “can | was 23 0|| 19-81 [511-5 | 46.4 | 8366 | 46-4 Nov.29 0 0] 20-75 |[511-2 | 46-3 1837-5 | 46.5 18 0] 25 16-10 |515-8 | 39.0 |/836-1 | 40-0 2 0] 19-93 |5121 | 46.6 [848.1 | 47-3 20 0|| 18-90 |/511-2 | 38-8 |/s31-1 | 39-5 4 0|| 20-54 ||508-5 | 47-3 ||s59.6 | 48-0 22 0|| 19-46 507-0 | 38-7 [840-2 | 39-4 6 Ol] 17-85 |516-3 | 47-6 |g51.8 | 47-5 23 0] 20-34 ||504-5 | 38-6 |\s34-7 | 39-2 8 0] 16-67 [515-3 | 47-0 ||s46-3 | 46-9 bv.23 0 0] 21-55 |/508-0 | 38-6 |/s32-8 | 39-1 10 0] 16-44 | 515-0 | 46.3 || 846.0 | 45-9 BR rene | saa Moca | onc 18 0] 25 15-99 |/515-1 | 42-3 |/s37-8 | 41-2 GE a Negee| cca ircae'| cae 20 0|| 17-72 |/511-7 | 41-5 |}844-2 | 40-5 MP eta | ceo diceee | one 22 0] 18-65 |509-4 | 41-0 |850.1 | 40-4 MN! gor, Wnine | cor loca | aoa 23 0|| 19-29 |1511-3 | 40-8 |/845-6 | 40-6 Nov. 30 0 0| 19.37 |/511-8 | 40-8 |/849.4 | 40.8 18 0|| 25 18-21 [514-8 | 35-8 |/837-9 | 36-5 2 0] 18-65 |514.9 | 40-9 |47-3 | 41-1 20 ol, 17-29 |512-3 | 35-0 ||837-7 | 36-0 4 0|| 17-20 ||/516-6 | 41-4 |/846.9 | 42-0 22 0|| 17-34 ||510-4 | 34-7 |/835-7 | 35-5 6 Ol] 17-27 |516-3 | 42-2 |/845-7 | 43-3 - 23 Oo} 19-19 512-9 | 34.9 | 828.0 | 35-5 8 0] 14-25 | 515-9 | 43-0 ||850-2 | 44.2 v.24 0 O| 21-58 | 516-6 | 35-3 | 826-8 | 36-0 10 0|| 16-70 |514-2 | 44-0 || 50-6 | 45-0 eM ea) oe ieee? | eo 18 0]| 25 17-27 |/513-0 | 43-7 || 332-3 | 43-5 eR eae | coe leone | aot 20 O|| 16-44 |/517-9 | 42.9 || 831-2 | 42-5 NE ce Ulccaal arathacse | an 22 0|| 18-55 | 507-0 | 42-0 |/836-9 | 41-5 Bh ecg at os a Wena | soc 23 0|| 21-78 |508-2 | 41-8 |/sa1-9 | 41-3 Dec. 1 0 0|| 22-11 |[510-0 | 41-3 |/844.0 | 41-0 18 0] 2517-81 |521-9 | 55-3 | 848-3 | 57-0 2 0|| 19-74 |511-7 | 40-9 ||852-4 | 40-8 20 0] 17-89 |/522-8 | 55-8 | s38-2 | 57-5 4 0] 21-28 | 511-1 | 40-6 |/s56-8 | 40-6 22 0] 18-46 ||516-2 | 55.6 | 837-8 | 57-0 6 O|| 17-67 | 506-2 | 40-2 [875-7 | 40-3 23 0|| 19-60 |)512-8 | 55-0 |/839-1 | 57-0 8 0|| 13-98 | 508-9 | 39.9 |'872.1 | 39-5 v.25 0 0| 20-63 |1510-7 | 54-7 || 848-9 | 56.5 10 0] 10-31 [507-9 | 39-0 || 868-1 | 38-5 | eh ee Glia Bee) 8ae9 | 868 18 0|| 25 17-69 ||513-0 | 36-0 ||s38-1 | 35-5 Sea ee ae eal on | SOUL | 56:7 20 0 16-38 |/515-6 | 35-7 |g35-5 | 35-3 | See iba is ale eeeml oo ol eee | 288 22 0] 17-88 [503-9 | 35-6 ||845-4 | 35-8 Se Me | oe «| S228. | 808 23 0|| 21-31 [501-5 | 35-7 |/s48-5 | 36-3 | Se Saal ee a te eS) Sai 2 (6-0) 23-09, \is05-1| 360) |is4e.e | 36-9 by. 26 18 0|) 25 17-91 ||521.0 | 48-7 | 844-7 | 48-7 2 0|| 25-75 |.496-8 | 37-3 ||879.4 | 39.6 20 0| 18-05 |/519-2 | 48-9 || 847-6 | 48-9 4 0|| 23-73 |512-5 | 38-6 |/s87-5 | 39-9 22 0|| 18-01 |516-3 | 49.0 | 844-2 | 49.0 6 0] 19-24 |517-.0 | 39-7 ||869-3 | 40.9 23 0|| 19-22 515-0 | 49-1 | 838-8 | 49.0 8 0] 18-45 |515-2 | 40.4 ||855-2 | 41-5 pv.27 0 0] 20-34 516-8 | 51-3 | 839-6 | 49.5 10 0] 17-88 [514-6 | 40-8 |/s51-2 | 41-6 DECLINATION. Torsion removed, circle reading,—Nov. 234 1, 112}°; 294 1h, 116}°. ain) BiFi~arR. k=0°0001300. BALANce. k=0°000014 approximately. Nov. 274 184. The temperature of the Bifilar magnet, after this, is obtained from a thermometer with its bulb resting in a cup in a ass bar. MAG. AND MET. oss. 1843. 26 DAILY OBSERVATIONS OF MAGNETOMETERS, DECEMBER 3—15. 1843. Gottingen BIFILAR. BALANCE. Gottingen BIFILaR. BALANCE, Mean Time of DECLINA- Mean Time of DECLINA- — ||———_———_—_ Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-|| Cor- |Thern Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | mete 4, ae | eee Se. Div ST | peers ae inten |e, es Se-Div.| © || Mie.Div.|_ o Dec. 3 18 0] 25 18-68 ||517-8 | 45-9 || 817-3 | 46-5 | Dec. 9 2 O]| 25 24-38 | 516-3 | 46-0 | 834.2 46-5 290 (~O 20-14 ||515-1 | 46-0 || 820-1 | 47-0 4 0 21-98 || 520-0 | 46-3 || 843-4 | 47. 22 O 19-80 ||513-3 | 46-6 || 820.6 | 47-2 60 22-36 || 512-2 | 46-7 ||853-7 | 474 23 0 19-29 ||513-7 | 46-7 1817-7 | 47.5 S00) 9-84 || 527-3 | 46-7 || 852-5 | 474 Dec. 4 0 O 20-47 ||511-9 | 46-8 || 818-0 | 47-5 10 0 18-15 | 510-4 | 46-9 || 849-0 | 47. 2) 10 21-44 | 513-7 | 47-3 || 825.4 | 48.3 Dec. 10 18 20|| 25 23-10 | 511-1 | 46-4 || 778-0 46.6 4 0 19-53 || 513-2 | 47-8 || 830-8 | 48-5 Q. 2. : i 20) 0 19-20 || 512-9 | 46-3 || 804-8 | 46. 6 0 18-03 ||514-1 | 48-0 || 829.3 | 48.7 ; : : f 22) 0 20-99 || 501-9 | 46-2 || 821-8 | 464 8 0 17-61 || 513-9 | 48-0 || 829.6 | 48.5 ; 3 4 23, 10 21-86 || 514-0 | 46-2 || 821-5 | 46 18 0} 25 18-92 ||517-5 | 47-8 || 823.3 | 48.92 20 23-44 ||515-3 | 46-7 || 841-8 | 474 20 0 18-05 ||517-8 | 47-9 || 824.8 | 48.2 4 0 23-16 | 517-7 | 47-1 || 852-5 | 48% 22, 0 18-41 ||514-8 | 47-9 || 899.5 | 48.2 G0 22-72 || 513-1 | 47-6 || 869-3 | 48. 23 0 19-31 || 508-9 | 47.9 || 823.3 | 48.5 8 0 6:05 || 530-6 | 47-9 || 867-9 | 484 Dec. 5 0 O 20-50 ||510-7 | 48-0 || 824.5 | 48.5 10 0 19-34 || 510-6 | 48-0 || 852-5 | 484 2 0 22-63 ||514-0 | 48-2 || 841-1 | 48.9 18 0|| 25 21-29 | 505-7 | 47-7 || 826-1 | 4gu 4 0 22-89 ||512-6 | 48-3 || 843-5 | 49-0 z 20 O 21-28 ||518-9 | 47-5 || 834-0 | 47.6 6 0 17-94 {512-5 | 48.2 || 850-2 | 48-5 292 0 20-63 | 514-3 | 47-2 ||839.4 | 47M 8 0 17-64 || 507-4 | 47.9 || 854-3 | 47-7 23 0 20:97 || 512-9 | 47-1 || 830-3 | 47, 10 0O 17:95 || 509-5 | 47-1 || 853-9 | 46-7 Dee 12) oo 23-93 ||511-9 | 47-0 | 835-0 | 475 18 O} 25 19-86 ||514-9 | 44.1 || 839.3 | 43.7 2 0 27-87 || 510-7 | 47-0 | 851-8 | 47. 20 0 20-45 |1515-0 | 43-9 || 839-8 | 43-5 4 0 21-98 ||515-7 | 47-0 | 887-4 | 47 22 0 21-32 ||512-4 | 43.6 ||841-5 | 43-4 6 0 14-78 || 517-4 | 47-1 | 869-9 | 474 23 0 24.74 1508-5 | 43-5 || 846.0 | 43.4 8 0 16-55 || 506-2 | 47-3 || 871-1 | 48: Dec. 6 O O 24-57 |1511-0 | 43-4 ||847.9 | 43.5 10 O 19-39 ||513-9 | 47-3 || 826-1 | 474 2 0 25-58 ||513-0 | 43-6 || 853-0 | 44-0 18 0|| 25 20-60 || 515-0 | 47-0 | 832-0 | 47: 0) 22-62 516-2 | 44-0 || 857-8 | 44.7 20 0 21-10 ||514-3 | 47-0 || 832-3 6 0 20-23 || 516-7 | 44-2 || 850-0 | 44-8 22 0 20-60 |512-9 | 47-0 || 838-8 8 0 19-37 || 511-8 | 44.3 || 852-0 | 44-7 23 0 21-41 | 512-9 | 47-0 || 835-9 10 0 19-15 || 502-2 | 44.5 850-2 | 45-0 Dee 13" "oo 92.22 ||513-5 | 46-9 || 839-5 18 0] 25 17-88 ||520-5 | 44.2 |1816-1 | 44.7 2 (0 22:99 ||514-9 | 46-9 | 838-0 20 0 19-87 ||516-0 | 44-3 || 827-8 | 44.9 4 0 21-84 | 518-8 | 46-9 || 846-6 22, 0 20-70 ||514-2 | 44.5 || 839.8 | 45.0 6 0 20-61 | 517-3 | 46-9 || 846-5 23 0 21-68 ||511-4 | 44.6 ||§30.2 | 45-3 8 0 13-62 | 504-8 | 46-8 | 881-4 Dec. 7 0 O 23.26 1512-1 | 44.7 1831-9 | 45-5 10 O 21:28 || 512-6 | 46-9 || 849.7 2 0 22-50 || 517-8 |.45-0 || 837-2 | 46-0 18 0] 25 21-17 |1514-8 | 46.9 | 839.4 4 0 20-60 |}518-0 | 45-8 || 843-6 | 46-5 20 25 21-55 |511-8 | 47-0 || 835-8 6 0 20-75 || 518-4 | 47-3 | 838-9 | 47-3 Shad 21-35 | 512.5 | 47-1 |935-2 8 0 20-34 1515-6 | 47-0 || 832-4 | 48-0 23 (0 22-13 ||511-4 | 47-0 || 834.6 10 0 18-79 | 513-7 | 47-8 || 832-3 | 48-7 Dec. 14 0 0 23-50 ||510-9 | 47-0 || 837-4 19 0} 25 19-89 ||518-8 | 47-0 || 819.4 | 47-0 2) 21-95 | 513-5 | 48-2 || 844-1 20 40 20-50 1517-5 | 46-8 || 822.6 | 46-8 20 20-74 ||517-5 | 48-2 || 845-7 22 0 20-61 ||514-6 | 46-6 || 821-3 | 46-5 6 0 18-82 || 517-0 | 47-9 || 843-3 Pe a 0) 92-11 ||515-7 | 46-4 118171 | 46-5 8 0 20-13 || 517-5 | 47-8 || 842-8 Dec. 8 0 0 22-80 1515-7 | 46-4 || 823-7 | 46.5 10 0 17-24 || 513-6 | 47-9 || 839-3 As 0) 23-86 || 511-2 | 46-6 || 850-1 | 47-0 20 0 19-81 |517-9 | 49-4 || 829-3 80 17-88 || 502-8 | 46-7 || 947-9 | 47-2 93 0 21-05 1513-7 | 49-9 | 834-2 18 0] 25 22.55 | 530-7 | 46-3 || 816-0 | 46-5 2 (0) 22-40 || 516-6 | 49-9 || 834-3 20 0 24-24 || 533-2 | 46-1 || 792-0 | 46.5 4 0 21-81 | 516-6 | 49-6 || 846-9 2210) 20-20 ||513-6 | 46-0 || 818-2 | 46-1 6 0 21-01 || 514-8 | 49-0 || 841-0 23 0 21-28 1513-1 | 45-9 |1813-0 | 46-1 8 0 20-03 || 515-4 | 48-6 || 839-0 Dec. 9 O O 22-58 ||512-5 | 45-9 || 826-9 | 46-3 10 0 19-31 | 514-8 | 48-0 | 839-3 DECLINATION. Torsion removed, circle reading,—Dec. 54 3h, 1134°, 108°* ; 144 3h, Sr. BiFiwar. k=0:0001300. BALANCE. k=0:000014 approximately. * Dec. 54 3h, After removing the torsion from the suspension thread of the Declinometer, the magnet, being too near the copper ing: was wound up a little, and the torsion again removed as above. iol Dec. 7419», A mistake in the time of an hour was made this morning, which was not discovered till 8» 40™, when an observation was made. ‘ Dec. 144 1h, Removed the inner box from the Bifilar Magnetometer for comparisons of thermometers. See Introduction. DAILY OBSERVATIONS OF MAGNETOMETERS, DECEMBER 15—28. 1843. 27 Gottingen 5 BIFILAR. BALANCE. Gottingen BIFILAR. BALANCE. lean Time of DEcLINA- _||————_————_ Mean Time of DECLINA- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Thermo- Ybservation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. yeh.) m. : 4 Se. Div. 2. Mie. Div. sd ay) Oh” m0. 2 i Se. Div. s Mie. Div. Y ce. 15 18 0| 25 19-61 |517-8 | 44.6 |/832-3 | 44.2 | Dec. 22 2 0] 25 20-10 | 519-7 | 49.0 | 839-8 | 49.4 20 0| 19-89 |/519-2 | 44.0 || 834-5 | 43-6 4 0] 18-63 | 590-3 | 49-3 | 841-5 | 49-8 22 0] 20-05 || 515-9 | 43-4 || 839-0 | 43-0 6 0] 18-08 | 520-2 | 49.9 | 836-2 | 50-3 23 0| 20-97 |515-4 | 43-2 | 835-3 | 43-0 8 o| 17-59 | 516-6 | 50-1 |/s34-8 | 50-5 16 0 0] 22:33 | 515-2 | 43-0 |836.2 | 43-0 10 0] 16-91 [516-7 | 50-3 |/831-8 | 50-6 eer | Pe) 43-0 655.6 a4 18 0] 25 17-74 | 521-1 | 49-7 | 827-4 | 49.9 4 0| 20-52 |518-0 | 43-3 | 837-9 | 43-5 20 0] 17-24 | 520-6 | 49-6 | 826-3 | 49-7 6 0] 20-17 |\517-8 | 43-2 || 838.9 | 43-4 22 0] 17-54 |514-9 | 49.3 | 827-8 | 49-5 8 0|| 19:96 |516-8 | 42-9 || 838-8 | 43-0 4 elite 10 0| 19-87 | 517-4 | 42-7 | sa1-5 | 42-9 =: PesGaie ene oo can Sapre | 40-4 Dec. 23 0 0] 19-26 ||518-1 | 49-1 | 827-5 | 49-3 e. 17 18 0| 25 20-07 |520.4 | 45-6 ||819.3 | 45-7 2 0] 20-20 | 519-1 | 49-1 | 828-8 | 49-4 20 0] 19-60 ||510-8 | 45-3 | 23.1 | 45-5 4 0| 18-87 | 520-0 | 49.1 | 838-3 | 49-5 22 0| 19-44 |1517-7 | 45-1, | 827-3 | 45-4 6 ol 18-60 |517-4 | 49-2 | 837-1 | 49-5 23 0] 20-50 |516-4 | 45-1 ||827-2 | 45-5 8 0] 18-33 | 520.3 | 49.4 | 837-3 | 49-7 «18 0 0] 20-70 |517-6 | 45-0 | 828.8 | 45-5 10 0] 16-84 |517-8 | 49-7 || 836-5 | 49.9 A ce, ee ae e822 | 257 lec, 24 18 0] 25 17-49 | 522-3 | 49-6 |\s15-7 | 49-5 4 0| 20-94 1517-5 | 45-7 ||s39-8 | 46-0 20 0| 17-31 | 524-7 | 49.5 | 816-1 | 49-5 6 0] 20.23 || 512.2 | 45-7 |\e46.1 | 46-0 22 0| 17-36 | 520-7 | 49-4 | 817-5 | 49-5 8 0| 16-84 |510-8 | 45-5 | 856-7 | 45-8 eeslie 10 0| 16-87 ||516-7 | 45-3 || 348.3 | 45-5 Pri elke eee tere law pera eee Y= Dec. 25 0 Of 21-21 | 517-7 | 49-4 | 823-9 | 49-6 18 0] 25 17-41 | 519-1 | 44.5 | 820-9 | 44-9 2 0| 20-75 |518-9 | 49-6 || 828-0 | 49-8 20 0] 18-21 |517-9 | 44-4 ||825-2 | 44-7 4 0| 19-56 | 520-0 | 49-8 | 829-2 | 50-0 22 0] 17-86 |519-5 | 44-3 ||827-3 | 44-6 6 0] 18-12 | 517-7 | 49-9 | 832-9 | 50-0 23 0] 1855 |/520-0 | 44.3 | 820.3 | 44-6 8 0] 18-01 | 517-3 | 49-7 |/ 832-5 | 49-8 le. 19 0 Ol 18-46 |/518-0 | 44.2 || 828.9 | 44.7 10 0] 16-60 [517-0 | 49-1 | 831-2 | 49-5 ee ee ea eee aes 18 0] 25 19.00 | 519-6 | 48.0 | 830-0 | 48-1 4 0| 21-10 |518-0 | 44.2 |/837.2 | 44-7 20 0|| 17-18 | 521-3 | 47-9 | 827-9 | 48-0 6 o| 19-89 ||518-6 | 44.1 || 32.9 | 44-6 22 0] 17-85 515-7 | 47-8 | 833-1 | 47-8 8 o| 17-91 ||518-9 | 44.1 |1834.8 | 44-6 BAIN Sey ae 10 0] 17-41 [1517-4 | 44.0 |/837-1 | 44-5 SAAD pre eeeel| Bae Lit ERE are Dec, 26 0 0] 20-70 |514-4 | 47-7 | 836-0 | 48-0 18 0] 25 18-55 |519-4 | 44.6 | 826-1 | 45-0 2 0| 22-47 | 518-8 | 48-0 | 830-5 | 48-5 20 0} 18-52 |517-4 | 44-7 |825.3 | 45-1 4 0] 19-91 |515-8 | 48-4 || 839-3 | 48-7 22 0| 19-63 |/518-4 | 44.8 | 819.7 | 45.2 6 0] 19:13 |517-8 | 48-4 || 836-4 | 48-7 23 0| 21-88 |/518-3 | 44-8 || 817-9 | 45.3 8 0| 17-88 |517-8 | 48-1 |834-2 | 48-5 @ 20 0 0| 21-42 |) 519.0 | 44.9 | 823.7 | 45-4 10 0|| 17-41 |/518-2 | 47-8 | 831-2 | 48-0 ee on oe eee | 406 18 0] 25 16-38 | 521-2 | 46-7 | 822-5 | 46-8 4 0| 21-24 | 514.0 | 45.9 || 856-5 | 46-6 20 0] 17-83 | 520-8 | 46-6 | 823-0 | 46-7 6 0] 19-80 ||513-6 | 48-0 || 843.6 | 49-0 | 22 0| 19-76 | 516-8 | 46-4 | 823-0 | 46-5 8 0] 1855 |/517-3 | 51-4 [840-5 | 53-5 ecaualtane 10 0] 17-27 |/516-0 | 52-7 || 39-8 | 54-7 28 2 Te aaa teed ye Dec. 27 0 0| 22.65 | 513-5 | 46-4 | 830-1 | 46-5 18 0| 25 18-53 |/520-4 | 57-0 || 824-6 | 59.3 2 0] 21-21 |517-0 | 46-4 || 827-7 | 46-8 [20 of 18-41 |/518-7 | 57-0 | 831-1 | 59-5 4 0| 19.94 | 518-7 | 46-7 | 840-5 | 47-0 } 22 0] 17-27 |/516.2 | 57-0 | 834-5 | 59.2 6 0| 20-81 | 503-1 | 46-7 | 876-4 | 46-9 im 23 o| 18:35 | 514-9 | 56-4 |/836-7 | 58.4 8 0 17-92 |513-6 | 46-7 | 885-1 | 47.2 le 21 0 0| 19-22 | 513-7 | 56-1 | 843-5 | 58-5 10 o| 17-04 | 514-3 | 46-2 | 858-7 | 46-5 5 . ee ote | ces Rees | O88 18 0| 25 15-14 ||523-6 | 44-7 | s24-1 | 44.8 4 0] 20-43 ||518-9 | 57-0 |/841-3 | 59-0 20 0] 17-44 |/522-3 | 44-4 |928-9 | 44.6 6 0| 20-63 |/516-5 | 56-3 || 841-2 | 58-2 a = 2250 24.60 |511-7 | 44-1 | 834-7 | 44-4 8 0| 20-21 |/515-3 | 55-4 ||835-4 | 57-0 ae ere 10 0 8-55 522-1 | 54-6 || 820-7 | 55-7 2 Pi BOO te ees aa Dec. 28 0 0] 23.07 |511-9 | 44-0 || 839-6 | 44.4 18 0] 25 18-70 ||518-9 | 50-3 |829-0 | 50-5 2 o| 23-32 | 506-0 | 44-6 | 866-3 | 45-1 2035) 17-54 |/518-4 | 49-6 ||s28.4 | 49-6 4 0] 21-41 | 515-3 | 45-3 [878-0 | 45-9 22 Ol) Aspcas ||) cddase Se docade. |) Boocoe| lmooooD 6 0 90-57 | 511-1 | 45-6 || 867-8 | 46-0 | 23 6|| ~— 18-43 || 518-5 | 49-0 ||832-9 | 49-1 8 0] 17-20 | 514-4 | 45-7 | 862-6 | 46.0 ek. 22 0 0] 19-12 ||517-9 | 48-9 ||836-8 | 49-0 10 0] 17-11 | 511-0 | 45-7 | 851-7 | 46-0 DECLINATION. Torsion removed, circle reading,—Dec. 174 23h, 122}°. BIFILAR, k£=0:0001300. BaLaANcE. k=—0:000014 approximately. i ; ] | Dec. 184 0h—2h, Magnet with short scale in the Declinometer. 28 DAILY OBSERVATIONS OF MAGNETOMETERS, DECEMBER 28—30. 1843. Gottingen Mean Time of DECLINA- Declination TION. Observation. d. h. m. 2, v Dec. 28 18 0}! 25 18-41 20 0O 18-06 22'- 0 17-78 23 0 18-55 Dec. 29 0 O 18-93 2 0 20-99 4 0 19-89 6 0 19-73 8 0 19-15 10 O 12-50 BIFILAR. BALANCE, Gottingen Mean Time of Cor- |Thermo-|| Cor- |Thermo Declination rected. | meter. |} rected. | meter. Observation. Se. Div. ° Mic. Div. P dad, ih. m. 517-1 | 45-3 830-8 | 45-7 | Dec. 29 18 0O 517-5 | 45-2 || 833-0 | 45-7 20 O 515-7 | 45-3 || 835-4 | 45-7 220 512-7 | 45-3 || 835-0 | 45-8 23 «0 513-7 | 45-3 837-5 | 45-9 | Dec. 30 0 O 515-8 | 45-8 || 833-8 | 46-3 2510 514-5 | 46-7 || 838-2 | 47-0 4 0 516-5 | 46-9 || 835-5 | 47-2 6 0 512-8 | 46-9 || 842-0 | 47-2 San0) 508-6 | 46-8 || 837-9 | 47-0 10 O DECLINA- TION. 25 18-43 18-25 19-89 rected. Se. Div. 519-2 518-1 512-5 17-18 19-17 21-21 18-82 17-64 17-92 15-22 516-7 513-6 511-9 517-6 515-5 507-2 514-2 DECLINATION. Torsion removed, circle reading,—Jan. 14 34, 1844, 120}°. BIFILAR. k=0:0001300. BALANCE. k=0°000014 approximately. BIFILAR. Cor- |Thermo-|| Cor- |The meter. || rected. 3 Mic. Div. 46-3 || 823-1 46:0 || 824-8 46-0 || 835-8 46-0 || 836-9 46-0 || 833-8 46-2 | 844-1 46-3 | 841-3 46-3 | 839-3 46-0 | 855-3 45:8 | 849-8 BALANCE, 46 46 46: 46: 4G 46 TERM-DAY OBSERVATIONS — MAGNETOMETERS. MAKERSTOUN OBSERVATORY, 1843. 30 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. Gottingen JANUARY 18, 19. Mean Time i DesleaHen DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- Birirar | BALANCE DECLINA- BriFiLar | Bata Observation TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corree Ns) v Se. Diy. Mice. Div. ©. Y Se. Diy. | Mic. Div. s of Se. Div. Mic. Div. i m Se. Div. | Mic,.] 104, 14%, 182, Qoh, 25 27-36) 533-5 781-8 | 25 27-85 | 557-2 753-5 | 25 27-81| 538-5 755°8 | 25 27-78) 532-5 763 27-29| 533-6 781-3 27-58 | 537-2 753-9 27-71} 538-4 754-8 28-08) 532-1 764 26:79 | 533-2 781.7 27-13| 537-3 754-6 27-73 | 538-0 754-8 27-80| 532-6 761 26-69) 533-7 779-7 26-94) 538-1 754-6 27-65 | 538-2 756-4 28-00 | 532-3 762 26-66 | 534-2 779-1 27-17) 537-5 755-4 28-05 | 537-9 757-9 27-58 | 529-5 761 26:75 | 533-9 776-0 27-29| 537-5 756-4 28-21) 537-4 758-6 27-71) 530-3 762.5 26-80 | 534-5 7754 27-34) 538-3 755-6 28-34| 537-1 759-6 28-17 | 529-8 76 27-29) 534-5 774-4 27-56| 538-7 756-2 28-14] 537-4 760-1 28-25 | 529-8 76 26-91] 534-8 773-6 27-78 | 537-9 756-7 28-27 | 537-3 760-6 | 28-17 | 529-5 76% 26-75 | 534-5 773-1 27-43 | 537-9 757-1 27-96 | 537-9 761-2 | 27-93 | 529-4 762 26-28] 534-3 772:3 27-46 | 537-4 758-2 27-93 | 537-6 760-5 } 27-93 | 529-4 763 26-48 | 534-3 7728 27-34| 538-2 757-4 27-40| 538-6 758-2 | 28-15 | 530-4 764.3 114, 15}, 19}, {| 23h, 25 26-75| 534-0 773-2 | 25 27-78 | 538-4 758-2 | 25 27-73 | 538-5 759-5 | 25 28-62| 528-9 764 26-86 | 532-2 772-6 28:10} 537-7 758-9 27-67 | 537-8 759-6 28-88 | 530-5 764 25-31 | 532-6 769-9 28-50 | 537-3 759-5 27-83 | 537-5 757-2 28-88 | 528-9 768 22-99) 533-1 769-2 28:42 | 537-5 759-4 27-80) 537-7 756-4 | 28-34! 527-8 768 21-55 | 535-4 768-2 28-42 | 539-2 759-0 27-83 | 538-0 755:°8 27-98| 531-4 76! 20-23 | 539-2 764:8 28-50} 539-4 758-4 27-49 | 535-9 757-1 28-81} 530-5 | 18-68 | 543-3 762-6 28-82 | 538-8 758-0 27-34 | 536-7 7576 28-89] 530-1 19-10| 546-6 762-7 28-27 | 537-8 759-0 27-49 | 537-7 755°8 | 29-38 | 527-6 20-61) 544-7 762-5 28-12) 537-3 758-9 27-46 | 538-1 752°8 | 29-17| 529-2 21:39 | 541-4 763-4 27-67 | 537-0 758-8 27-74| 537-8 751-1 29-41] 529-3 22-03 | 537-6 762-4 27-33 | 536-0 758-5 27-74| 537-4 750-5 | 29-21] 528-7 22-62 | 537-3 762-8 27-09 | 537-4 759-2 27-98 | 536-4 749-2 29-68 | 529-3 12h, 164. 20h, 04, 25 23-29! 536-4 762-1 | 25 28-08| 538-8 759-3 | 25 27-98) 536-2 747-7 | 25 29-83| 529-3 771 24-00 | 534-8 762-6 28-00 | 538-8 7588 27-96 | 536-0 747-6 30-05 | 529-4 773 24-06 | 532-8 762-4 28-44} 538-3 759-4 28-07 | 536-0 750-3 30-13 | 529-2 71: 23-86 | 534-3 761-5 28-52) 538-1 758-8 28-15} 536-1 748-2 29-95 | 528-8 773: 24-30} 536-8 760-8 28:48 | 538-4 756-6 28-07 | 536-0 749-1 | 29-88} 529-0 Te 24-99 | 537-6 758:7 28-57) 538-7 756-6 28-00) 536-7 750-4 30-25 | 528-9 Th 25-41 | 536-4 758-7 28-28) 538-8 755:3 28-17 | 535-9 755-2 | 30-63 | 529-9 774 25-41 | 536-6 758-7 28-41) 538-7 755-8 27-68 | 536-0 756:6 | 30-69 | 529-2 776 25-59 | 536-1 758-5 28-20| 538-8 755-4 27-76 | 536-0 760-4 30-68 | 529-1 7 6 { 25:95 | 536-1 758-9 28-01] 538-3 754-7 27-78 | 535-8 758-8 30-42 | 529-3 77 25-95 | 537-3 757-9 28-34 | 537-8 755-3 27-67 | 536-4 759-3 30-53 | 529-7 776-0 26-10 | 536-4 757-5 28-64 | 537-7 757-2 27-80 | 536-4 761-1 30-71 | 531-0 776: 134, 172, 21%, 14, 25 26-26| 536-7 758-3 | 25 28-89] 537-3 756-6 | 25 27-98| 535-7 759-4 | 25 31-19! 530-3 26-30| 535-9 758-1 28-75 | 537-0 756-4 28-01} 535-9 759-8 | 31-19 | 530-1 26-05] 536-0 756-5 28-34| 537-3 756-9 27-93 | 535-4 759-7 | 31-32 | 529-6 25-95 | 535-4 756-4 28-03 | 537-2 756-5 27-71 | 535-1 759-1 | 31-53} 530-0 25-73 | 535-1 756-5 28-67 | 537-7 757-6 27-:94| 534-7 759-3 | 32-20! 530-8 25:95 | 534-4 756-9 29-65 | 537-9 757-3 27-96 | 534-3 763-0 32-27 | 531-2 25-95 | 534-4 755:7 28-89 | 537-4 755-5 27-87 | 534-1 762-0 31-99] 530-6 25-95 | 535-3 756-1 28-32 | 537-6 755-3 27-78 | 533-4 761-8 31-99} 531-3 26-22) 536-3 756-5 27-98 | 538-0 754-9 27-49 | 533-9 761-7 32-20) 531-9 27-29 | 536-7 756-9 27-90 | 538-2 757-4 27-53 | 532-2 763-8 32-05 | 530-4 27-90 | 537-0 755-9 27-83 | 538-2 756-5 27-26 | 530-9 762-6 31-66 | 530-6 27-96 | 537-8 755-0 27-83 | 538-2 756-4 27-40) 533-0 762-2 31-66} 531-4 Hour, oa | 20 u | 12 | 18 14 | 45 | 16 | a | 18 | 19 20 | 21 | 2 23 | 0 | BIFILan THERMOMETER, . | 56°8 | 57°7 | 58°6 | 59-7 | 60:4 | 60-9 | 61.4 | 61'3 | 60°8 | 60:2 | 59:5 | 59-0 | 59°3 | 58.8 | 58:3 BALANCE THERMOMETER, . . | 58:2 | 588 | 59:5 | 60-4 | 61:2 | 61:8 | 62:2 | 62:2 | 618 | 62:2 | 62-0 | 61-6 | 61-0 | 602 OBSERVER’S INITIAL, . | B B B | B D | D | D | D | W | Ww Ww iw BIFILAR. k=0:0001248. Observed 2™ after the Declination. BALANCE. k=0:000015 approximately. Observed 3™ after the Declination. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. = ingen JANUARY 18, 19. Frpruary 24, 25. 1 Lime Pelion DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BiFILaR | BALANCE DECLINA- Brrirar | BALANCE ‘vation. _TION. Corrected. | Corrected. TION. Corrected. | Corrected. j TION. Corrected. | Corrected. TION. Corrected.| Corrected. ‘in. Bs oe Se. Div. | Mie.Div. | ° / ‘Se. Diy. | Mic. Div. | & ’ Se. Div. | Mic. Div.J ° / Se. Div. | Mic. Div. Qh, 6}, 102, 144, i 25 31:99| 533-3 775-1 | 25 29-04) 540-7 767-9 | 25 20-16] 527-0 783-2 | 25 20-55 | 527-1 | 693-2 5 32-05 | 532-2 775:1 28-67 | 541-7 765-4 20-48 | 526-4 782-9 21-37 | 528-4 699.4 0 31-86 | 532-0 775-0 28-62] 541-1 766-5 21-07 | 526-9 782:1 21-98} 529-0 705-6 5 31-73 | 533-7 773-6 29-41} 538-9 765-6 21-53 | 525-2 784-5 22-42 | 531-5 708-4 0 31-64) 534-3 773-4 29-29) 540-1 766-0 21-82] 523-5 784:5 23-06 | 532-4 709-8 5 31-35 | 534-9 773-5 | 29-02 | 540-6 764.9 21-91 | 523-5 785-2 23-70} 531-6 712-5 0 31-32] 535-4 773-5 | 29-29} 541-0 764-8 92-42 | 523-1 785-9 23-86] 532-6 715-8 5 31-19) 536-4 773-5 | 28-97} 540-2 764-8 23-19 | 522-0 785-6 24-69 | 533-8 716-1 0 31-19 | 537-2 773-5 29-24) 539-0 765-8 24-08 | 521-2 785-4 25-14] 532-1 718-2 5 30-90 | 537-6 773-5 29-31] 538-2 767-6 20:77 | 527-1 776-9 25-18) 533-7 717-9 0 30-85 | 539-0 773-5 | 29-48) 537-9 766-9 16-94 | 527-1 769-9 25-14| 534-0 717-3 5 80-85 | 539-8 773°8 28-08} 536-1 767-2 15-12] 526-7 764-0 24-25 | 532-9 721-2 3h, 7h, 114, 154, 0 25 30-90| 540-5 774-5 | 25 27:83) 536-3 767-6 | 25 15-19] 527-6 760-4 | 25 23-90] 533-4 723-4 5 30-83 | 540-0 774-6 | 27-17| 535-7 767-4 17:05 525-0 759-6 24-10} 535-5 724-4 0 30-65 | 540-6 775°8 | 27-00} 535-5 766-0 19-42 | 524-8 759-0 25-09! 536-3 724-1 5] 30-58 | 541-0 776:3 | 27-46| 536-0 765:8 26-93 | 534-7 748-9 25-66} 536-7 723-4 0 30-18} 540-0 777-1 27-33 | 537-2 765-9 32-10} 543-2 737-7 25-14] 538-9 720°5 5 30-02} 540-4 778-0 27:-44| 536.9 763-0 36-56 | 544-3 718-9 24.22) 535-1 719-4 0 29-85 | 540-9 777-1 | 27-74 536-9 764-9 35-53 | 534-7 691-1 22-03) 536-7 716-9 bY 29-91} 541-7 778-0 | 27-83 | 536-7 762-0 31-07 | 526-2 670-6 21-91) 538-8 718-0 0 29-85 | 541-9 779-0 | 27-27) 537-0 761-9 25-45 | 524-3 667-3 21-91) 538-7 719-6 5 29-89 | 542-7 779-4 | 27-70) 537-7 761-3 21-81 | 525-9 674-0 22-56 | 535-6 721-5 0 29-85 | 542-5 780-2 | 27-88 | 537-9 760-5 18-86 | 526-5 679-8 22-85 | 534-6 723-7 3 29-88} 542-3 781-1 | 27-88 | 538-0 758°7 16:43 | 527-6 684-5 24-01 | 535-0 723-5 ) 4h, gh, 124, 162, 0 25 30-00} 542-1 780-8 | 25 27-85 | 538-0 758-1 | 25 15:03} 526-9 692-5 | 25 24-50| 534-0 724-6 5 29-86 | 541-4 779-0 | 28-07 | 537-9 759-1 18:95 | 514-5 699-8 25-14) 535-2 723-5 0 29-85] 541-4 779-5 | 28-57 | 537°5 759-4 23-76 | 505-7 705-8 25-32) 536-5 721-7 5 29-62} 541-4 781-5 | 28-48 | 537-2 758-6 27-29 | 498-0 706-9 25-07) 535-4 719-7 0 29-62] 542.4 779-2 28-59} 536-8 757-5 32-02 | 495-2 702-1 24-40) 535-6 720-9 5 29-38) 542-0 778:8 | 28-52 | 535-8 757-1 33-17] 502-2 690-6 24-31) 536-3 721-7 0 29-58} 541-9 778-3 | 27:94| 534-5 756-5 33-13 |} 512-0 673-9 24-80] 534-5 723-4 5 29-49} 541-7 777-6 | 27 16} 534-9 756-0 30-77 | 519-5 662-8 24-67 | 533-2 724-4 0 29-60) 542-1 775-7 | 26-70 | 534-1 756:1 29-11} 528-2 660-4 24-99| 532-4 726-4 d 29-38) 541-7 776-3 | 26-33 | 534-1 756-4 25:90 | 537-2 659-3 26-22) 529-9 728-1 0 29-46| 542-2 776-4 | 26:06 | 535-2 756-8 24-00 | 536-7 656-4 27-47 | 526-8 728-4 5 29-31] 541-8 777°5 | 26:06 | 534-9 757-6 22-09 | 540-0 657-3 28-17 | 525-5 728-4 5h, gh, 132, 174, ¢ 25 29-31| 541-5 775-9 | 25 26-48 | 534-4 758-4 | 25 20-99| 537-6 654-0 | 25 29-31] 527-0 725-9 3 29-22 | 541-3 774-4 | 26-79 | 534-1 761-6 18:36 | 535:3 651-5 29-78 | 530-1 724-0 J 29-26! 540-9 776-2 | 26-96 | 533-6 761-4 16-80) 535-0 650-0 30-39 | 526-7 723-9 p 29-17 | 541-2 773-9 26-99 | 533-8 761-3 14-20) 535-0 648-4 31-25 | 527-0 720-8 Dp 29-26 | 539-8 772-4 27-56] 534-0 760-9 12:65} 537-1 652-8 31-79 | 528-6 717-1 D 29-31) 541-1 769-8 | 27-38 | 532-7 760-5 12-70) 538-6 656-9 31-99 |} 527-5 715:3 ) 28-70 | 542-2 769.4 | 26-15! 532-2 760-7 14-70) 534-1 659-4 31-32 | 529-4 712-0 p 28-59| 542-0 | 769-1 | 24-72| 533-9 | 760-5 16-33 | 532-6 | 663-6 31-12} 531-8 | 710-9 i) 29-04| 541-8 | 767-5 24-55 | 533-7 | 762-8 17-91 | 529-4 | 668-3 30-65| 534-3 | 708-6 > 28-95] 541-4 771-1 | 24.94] 535-0 763°8 19-36 | 526-5 675-2 30:58 | 536-9 706-0 | 29-01] 540-1 768:5 | 24-80! 533-8 765:5 19-98} 524-2 680-8 29-38] 538-7 703-5 ) 29-11} 540-7 767-4 | 24-87 | 533-6 766-1 19-86 | 526-5 686-2 28-50) 539-5 701-1 i . LT. 5 | 6 7 | 8 | 9 |10]20 | a | 12 |.13 | 14 | 15 [16 17 Ipizan THERMOMETER, . | 58-3 | 68:3 | 59:0 | 59°8 | 60:3 | 60°6 | 60°3 | 59°7 | 59-2| 52-7 | 52:3 | 52:0 | 53:1 | 53-1 | 58-0 | 53:0 | 53-0 Itaxce Tiexuomsren, . | 60-0 | 598 | 60-3| 61-0 | 61.5! 620 | 615 | 60-9 | 60-5] 542 | 541 | 549 | 55:3 | 550 | 55-2 | 55-4 | 55:5 J — 7 iserver’s INITIAL, Aa | Mia Me) |e) |e | |p) D {| |] jt B w fw jw W k=0-0001205. k=0'000015 approximately. Observed 2™ after the Declination. Observed 3™ after the Declination. February Term. For observations before and after this Term, see Hxtra Observations. | BIFILAR. BALANCE. 32 } Gottingen Mean Time of | Declination Observation. DECLINA- TION. Min. eae 0 25 27-85 5 27-70 10 26-96 15 26-08 20 26-22 25 26-28 30 26-08 35 25-95 40 25:95 45 25-75 50 26-28 55 26-08 0 25 26-43 5 26-37 10 26-35 15 26:25 20 25:95 25 25-63 30 25-78 35 25-65 40 25:31 45 25:48 50 25:45 Sy) 25°81 0 25 25:58 5 25-95 10 25-48 15 25-63 20 25-32 25 25:37 30 25-16 35 25-21 40 25:54 45 26-35 50 25:58 55 25-81 0 25 25-36 5 25-75 10 25-14 15 25:68 20 25-54 25 25-02 30 26-42 35 24-99 40 25-95 45 25-66 50 25-83 55 25:56 TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. 182, 539-2 537-2 536-2 537-4 537-1 537-0 535:3 535-7 535:3 537-1 536-1 538-0 19%, 538-4 538-3 537-6 536-4 536-3 536-1 535-9 534:8 534-7 534:8 535:1 534-4 204, 534:5 534-2 534:3 533-5 534-2 533-9 534-6 534-1 535-7 530-7 532-5 531-8 pitas 531-4 530-7 531-3 531-1 530-7 530°8 529-1 531-0 530-3 529-6 529-8 529-9 BIFILAR THERMOMETER, BIFILAR Corrected. Sc. Diy. DECLINA- TION. BALANCE Corrected. Mic. Diy. a i 701-2 | 25 26-35 695-5 25:88 703-6 26-28 703-5 26-42 708-3 26-62 705-0 26-42 710-0 26-82 712-5 26-08 714-1 26-69 716-3 25-75 717-8 26-48 717-8 26-67 716-4 | 25 26-72 719-1 27-06 723-7 27-09 724-1 27-63 725-4 27-70 725-5 27-49 727-5 27-70 728-1 27-56 731-4 27-56 730-5 27-96 733-7 27-56 733-6 27-29 734-2 | 25 28-03 733-9 28:54 734-7 28-58 734-8 28-64 734-8 27-96 734-9 29-04 735:5 28-97 736-9 28-74 740-2 28-27 740-9 28-67 742-8 28-70 742-1 28-23 743-8 | 25 28-54 741-4 28-64 744-0 28-70 742-3 28-70 742-5 28-64 743-3 28:37 743-8 28-54 743-6 28-70 743-4 28-64 744-6 28-64 745-8 28-77 744-9 28-70 is | 19 | 20 | 21 Frprvuary 24, 25. BIFILAR Corrected. Se. Div. 22m 529.2 530-3 530-1 530°5 530-0 530-2 528-9 529-6 526-5 532:5 528-7 529-9 Ban. 530-2 528-9 530-0 529-7 529-3 529-0 529-4 529-8 530-2 530-0 527-9 528-5 oh, 528-1 527-3 526-0 527-6 529-6 531-3 531-0 530-0 530-3 531-8 530-9 531-8 1h, 533-0 533-2 533-0 533-3 534-2 533-0 532-6 534-2 535-2 536-3 536-4 536-1 BALANCE 743-4 743-7 744-0 744-0 745-5 743-9 745-4 745-7 746-1 746-5 748-2 747-8 748-9 749-8 746-0 746-2 746-1 745-2 745-7 745-6 745-4 Corrected. Mic. Diy. DECLINA- TION. 25 25 25 ‘ 27-93 27-83 27-85 27-96 27-80 27-70 27-71 27:44 27-73 27-22 27-41 27-70 27-20 27-11 27-11 26-82 26-77 26-82 26-94 27-06 26-69 26-66 27-44 27-80 27-22 27-24 27-27 26-97 27:02 BIFILAR Corrected. Se. Div. gh, 535-7 536-1 536-2 535-6 {| 537-3 536-1 | 536-1 537-0 535-7 534-6 535:3 535-3 oo 535-1 534-9 536-1 535-3 535-7 534-9 535-9 535-3 535-3 535-8 536-0 535-7 4h, 536-9 536-1 537-9 537-3 533-7 537-4 538-9 536:8 536-2 536-3 535:8 535:5 5h, 535-3 534-7 534-9 532-7 531-9 535-1 537°3 533-5 534-5 535-2 534-8 534-7 BALANCE Corrected. Mic. Div. 2 { Se. Div. 6h, 748-6 | 25 27-19| 534.5 | 75 747-8 27-27| 535-8 | 746 746-4 27-16 | 536-3 | 75 746-1 27-06 | 536-4 | 75% 745-2 27-22| 535-4 5 745-6 27-19| 536-3 | 7% 745-5 27-07 | 534-8 | 7% 745-4 26-69 | 535-1 5 743-9 26-75 | 535-7 | 7 745-4 26-75 | 535-7 | 7 744-8 26:67| 535-8 | 74 745-1 26:57 | 535-1 | 7 ie 743-8 | 25 26-62| 535-8 | 7 743-6 26-52) 536-3 | 75 744-3 26-25| 536-7 | 7B 743-5 26-05| 537-7 | 74 743-8 26:39] 537-3 | 7 745-3 25:95} 537-1 | 7 747-0 26-37 | 538-2 752-6 26-50| 539-5 | 7 748-1 26-39| 538-1 | 7% 751-7 26-55| 536-7 747-0 26-39| 537-5 747-1 26-28| 536-9 gh, 748-5 | 25 25-95| 536-0 | 7% 749-1 25-95 | 536-0 748-7 25-95 | 536-5 750-4 25-16] 538-1 | 7 749-8 25-98 | 533-9 | 7 749-0 25-75 | 535-4 750-5 24-87 | 534-9 | 7 752-6 25-81] 535-7 | 7 752-7 25-95| 538-0 753-0 25-95 | 538-8 753-0 25-95 | 539-2 753-8 25-95 | 539-4 gh, 752-7 | 25 25-95| 541-4 | 7% 753-1 | 25-95 | 539-3 5 752-8 25:95 | 539-0 | 74 752-0 24-20| 538-7 752-4 23-76 | 537-6 751-8 24-13] 536-5 749-2 24-47 | 536-1 750-0 24-67 | 536-1 750-1 25-14 | 536-1 750-8 25:27 | 536-0 749-8 25-21| 535-7 750-4 | 23-19 . DECLINA- TION. | 534 | 53-9 | 53-8 | 53:2 | 53-0 | 53:0 | 52:9 | 52:8 | 531 | 52-9 | 524 | 52-1 | 51:3 | 51-5 | 52-2 | 528 BAL Corr BIFILAR Corrected. OBSERVER’S INITIAL, . | BALANCE THERMOMETER, BIFILAR. BALANCE. k=0:0001248. Observed 2™ after the Declination. k=0-:000015 approximately. Observed 3™ after the Declination. 58 | 558 | 58 | 552 | 550 | 56: | 549 | 548 | s49 | 545 | sto | 538 | 530 February Term. For observations before and after this Term, see Lxtra Observations. 53:1 | 53:8 | 544 | TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. Marcu 22, 23. oovoonrounornoae : | { | : ——S ww aS SS OO DECLINA- TION. ° , 25 25 25 DR, ILAR THERMOMETER, . ERVER’S INITIAL, ¥ BIFILAR | BALANCE DECLINA- Bririnar | BALANCE Corrected. | Corrected. TION. Corrected.| Corrected. Sc. Div. | Mic. Diy. é Y Se. Div. | Mic. Div. 104, 14h, 548-0 724-4 | 25 22.03] 545.9 620-7 544-8 725-7 20-82} 541-0 624-7 544-2 723-8 20-07 | 539-3 628-1 542:8 722-1 19-61 | 538-5 631-9 542-4 721-7 18-97 | 536-3 635-5 540-5 721-2 18:92| 534-7 638-9 539-5 720-8 18-87 | 533-4 640-8 540-2 GAG f 18-25 | 533-6 640-8 541-4 715-6 17:17] 535-0 640-5 541-3 714-8 16-44} 536-4 641-7 540-0 712-8 15-70 | 535-7 642-5 538-9 711-9 15-79 | 536-7 642-1 112, 15), 538-9 709-9 | 25 15-69} 535-0 641-9 540-8 709-2 16-92 |} 533-3 647-8 539-9 709-7 19-00} 530-7 654-1 539-7 710-9 20:43 | 528-4 654-9 538-4 711-2 20-50} 529-4 658-6 538-3 711-6 21-73) 530-4 659-5 539-1 710-2 21-91} 531-6 659-2 548-5 704-5 22-65 | 531-6 660-7 555-7 699-0 22-90 | 533-6 664-0 557-8 694-6 23-23) 535-1 661-9 553-5 693-8 23-43 | 537-1 662-3 552-9 690-6 23-29 | 537-1 664-0 12h, 164, 551-6 688-9 | 25 23-12] 536-4 663-9 546-2 688-8 22-74| 538-8 663-0 541-1 690-5 22-92) 538-9 665-4 537-1 693-6 23-29 | 539-6 666-2 536-2 693-9 23-39 | 540-4 666-1 535-6 697-6 23-97 | 538-8 669-4 533-8 699-1 23-50 | 539-4 668-3 533-7 700-3 23-54 | 538-9 668-2 534-4 699-9 23-53 | 540-0 669-3 533-9 699-9 23-83 | 540-8 671-6 534-4 698-2 24-15} 539-0 670-0 530-1 698-5 23:48 | 538-0 671-4 132. 174, 527-2 697-0 | 25 22-69| 539-1 671-0 527-7 692-0 22-77| 538-2 671-6 534-7 687-1 23-03 | 538-9 672-2 545-0 675-9 23-19] 538-5 673-6 551-3 662-6 23-26 | 538-2 673-7 559-3 652-5 23-44| 537-7 677-5 562-1 642-0 23-44| 535-4 680-3 562-8 634-7 22-42} 537-9 678-7 558-2 630-4 23-44] 539-6 679-9 558:°3 625-5 25-21} 535-6 682-2 555-9 619-9 24-40 | 534-9 684-0 551-0 613-7 21-73| 540-1 682-7 10 | | 2 | is | 14 | 15 56-0 | 54-0 | 54-0 | 540 | 58-9 | 53-9 56:0 | 54:2 | 54-8 | 55°5 | 54:8 | 54:3 VANCE THERMOMETER, Ww | wilw | w | HM || ae Birinar. Observed 2™ after the Declination. k=0°0001248. BALANCE. MAG. AND MET. oxgs. 1843. Observed 3™ after the Declination. k=0:000015 approximately. DECLINA- BIFILAR | BALANCE DECLINA- TION. Corrected. | Corrected. TION. ° U Se. Diy. | Mic. Diy. © 4 18h, 25 23-16] 543-1 682-1 | 25 24-04 92-83 | 545-7 681:3 23-97 25:75 | 539-6 685-9 23-59 24-71) 542-8 685-2 24-15 23-90) 544-2 683-1 23-56 23-41) 544.2 683-4 24.94 23-24) 543-3 684:5 24-44 93-03 | 543-5 684-1 94-15 22-67 | 542-3 685-1 24.47 23-12) 541-9 685-3 24-01 23-04] 542-1 685:-3 24-48 23:53 | 540-9 687-5 24-98 19h, 25 23-97| 540-1 689-6 | 25 25-14 23:93 | 538-8 689-4 25-68 23-93 | 538-0 690-1 25-95 23:39) 535-2 689-7 25:95 23-56) 538-5 690-0 26-01 23-30} 538-9 689.2 26:48 93-19) 540-9 689-6 26-80 23-86 | 540-4 690-0 27-13 23-76! 540-1 689-8 27-60 23-93 | 542-3 689-5 | 27-80 23-:79| 542-6 689:3 | 27-88 24:13} 543-1 689-0 | 27-61 204, 25 24-60) 544.2 690-0 | 25 28-07 24-57 | 542-6 690-7 28-74 94-87 | 543.9 690-5 28-82 94-53 | 540-7 691-3 29-35 23-44 | 542-2 691-4 29-76 24-53 | 538-4 694-4 29-65 24-47 | 536-6 696-4 30-48 23-70| 536-0 696-4 32-31 93-36 | 535-9 698-3 31-99 23-39 | 533-1 697-6 31-68 21-91} 538-5 696-0 32-25 23-39| 540-0 | 695-3 31-64 21h, 2 25 23-54! 542-6 696-3 | 25 32-20 24-33 | 536-4 696-3 33-07 29-45! 538-6 695-9 32-35 23-76 | 536-8 693°8 31-63 24-42 | 537-1 693-0 31-84 24-98 | 537-9 694:3 31-68 25:27 | 534-8 693-3 31-66 24-48 | 534-9 694-5 31-32 94.71] 533-8 693-4 31-30 94-44] 533-2 692-3 31-38 94.60! 532-7 693-4 31-43 23:97 | 531-0 690-6 31-43 16 17 | 18 | 19 | 20 21 | 22 538 | 53:5 | 53:3 | 533 | 53-0 | 52:5 | 52:2 540 | 54:0 | 53-8 | 536 | 53:2 | 53:0 | 52-5 n | |B | B | B |B | D BIFILAR BALANCE Corrected. | Corrected. Se. Div. gon 530-6 532-9 532°8 533-4 531-0 533-7 534-4 534-3 533-6 533-2 533-9 533-9 Be} 534-2 533-6 532°8 533-2 Mic. Diy. 690-8 689-8 689-8 689-0 688-7 688-7 688-2 688-3 688-1 688-0 688-0 688-0 688-0 | 688-0 688-0 | 688-0 | 34 TEeRM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. Gottingen Marcu 22, 23. APRIL, 19, 20. Mean Time : polation DECLINA- BIFILAR | BALANCE DECLINA- BIFiLaR | BALANCE y DECLINA- BIFILAR | BALANCE DECLINA- BiFriLar | BAL Observation. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corr Min. 3 y Se. Div. | Mic. Div. $s f Se. Div. | Mic. Div. f° 4 Se. Diy. | Mic. Div. e “ Se. Div. oh, 6h, 10%, 14}, 0 25 31-83 | 533-2 695-9 | 25 24-87| 535-6 724-6 | 25 23-09| 543-8 683-9 | 25 20-57| 539-7 5 31-99} 535-6 695-3 24-11} 530-8 728-0 | 23-24] 543-9 684-2 20-52 | 539-9 10 31-71 | 533-8 696-5 22-15] 528-5 730-9 | 23-10| 543-6 691-1 20-57 | 539-8 15 31-86 | 535-0 694-9 21-28} 536-9 732-8 | 23:03) 543-8 690-8 20-45 | 539-7 20 - 32-05] 537-6 693-4 22-79) 533-1 735-9 | 23-10) 543-9 690-1 20-57 | 539-9 2d) | 31-93 | 535-4 694-8 22-49] 531-9 739-3 23-03 | 543-0 691-0 20-70 | 539-7 30 32-10| 538-7 694-8 18-75 | 536-8 738-0 22-92 | 543-6 691-0 20-54} 539-0 35 31-79 | 535-7 695-7 13-44 | 542-5 737-2 | 23-06 | 544-1 691-7 20-57 | 538-9 40 31-77 | 537-0 696-1 13-17 | 547-0 739-5 | 23-06 | 544-6 692-2 20-57 | 538-8 45 31-48 | 540-9 694.2 15-36 | 544-7 739-9 | 22-85 | 544-7 43 20-43) 538-7 50 32-20 | 541-6 695-8 16-84 | 537-3 740-8 22-80 | 544-7 692-2 20-27 | 538-7 55 31-61 | 540-2 697-9 16-80 | 538-8 737-5 22-72 | 544-3 os 20-45 | 538-6 3h, cha LT, eo 0 25 31-56] 539-8 698-1 | 25 16-87| 530-6 735-4 | 25 22-62| 543-7 692-3 | 25 20-30] 538-4 5) 31-16} 539-9 697-7 13-82 | 547-3 726-0 22-83 | 544-1 S 20-57 | 538-1 10 30-96 | 538-1 696-8 13-77 | 552-0 723-3 22-80 | 543-9 a 20-57 | 538-1 15 30-56 | 538-1 697-0 15-76 | 552-4 723-6 22-62) 543-1 a. 20-57 | 539-0 20 30-36 | 540-0 697-2 17-67 | 546-3 724-4 22-58 | 543-0 ° 20-63 | 539-1 25 30:39 | 540-7 697-7 18-86 | 544-0 724-6 22-67 | 543-0 55 20-43 | 538-0 30 29-91} 538-4 698-9 20-23) 539-3 725-2 22-60 | 542-8 688-0 20-35 | 537-5 35 29-91} 540-2 698-4 20:57| 540-9 721-2 22-58 | 542-8 "} 20-43 | 537-9 40 30-12} 540-9 698-6 20-54| 539-2 722°3 | 22-58 | 542-7 3 20-10} 537-4 45 29-88} 541-4 698:8 21-28} 538-1 725-3 | 22:58 | 542-7 73 20-03) 536-9 50 29-55} 541-8 699-0 _ 22-02) 538-9 718-7 fo ase ee 542-8 687-2 20-10} 535-5 55 29-31] 542-1 699-7 22-63 | 539-3 719-0 22-62 | 542-5 A 20-43 | 533-0 aun gh, 125, te 0 25 29-01] 540-5 701-0 | 25 23-43) 539-3 717-9 | 25 22-58| 542-3 686-9 | 25 20-30] 533-8 5 29-19} 544-8 700-7 24-13) 538-5 717-5 22-52) 541-8 p 19-96 | 534-9 10 29-12) 543-0 701-7 24-48 | 537-7 716-0 22-55) 541-4 “f 20-34] 536-3 15 30-53 | 542-7 699-9 25-14} 536-0 716-0 22-47 | 541-4 = 21-17} 534-1 20 28-37 | 540-3 701-3 25-34| 536-4 714-6 22-40} 541-5 691-1 21-24! 534-8 25 27-83 | 536-7 701-5 25-16) 536-8 713-2 22-32) 541-5 4 21-17] 534-8 30 27-91 | 537-2 703°3 25-39) 535-2 713-1 | 22-18) 541-0 Fr 20-97 | 535-7 35 27:70 | 538-3 703-3 25-68 | 534-7 713-1 | 22-20} 540-5 = 20-90 | 535-7 40 27:90} 540-8 |. 705-4 25-68 | 534-9 712-9 | 22-23 | 540-6 689-1 20-57 | 537-4 45 28-23] 539-4 704-9 25-81) 535-6 712-9 | 22-25) 540-8 3 21-10) 536-7 50 27-09} 539-4 705-1 25:90) 536-0 711-4 22-11} 540-8 “5 20-63 | 535-6 55 26:97 | 537-2 704-8 25-86) 536-8 710-1 22-23] 540-8 : 21-17| 535-4 a gb. 13%, 17 0 25 27-33| 549-6 704-0 | 25 25-79| 537-1 710-3 | 25 22-11] 540-5 687-2 | 25 21-10| 535-6 5 27-41 | 545-1 712-3 25-95 | 537-5 709-4 | 22-08} 540-3 686-9 21-17| 536-1 10 26-72 | 538-0 712-6 25-88 | 537-9 707-9 22-05 | 540-2 686-5 21-17) 535-9 15 26-48 | 537-0 710-5 25-75 | 537-8 708-4 22-29 | 539-7 686-2 20-87 | 536-9 20 26:28 | 538-2 711-5 25-46 | 538-2 708-2 | 22-13] 540-0 on 20-81} 537-0 25 26-32) 536-5 714-2 25-18) 537-9 706-8 | 21-95| 540-0 - 20-63 | 536-9 30 26-62 | 538-2 712-4 25-12| 538-2 705-1 | 22-02} 540-3 687-8 20-77 | 537-5 35 26-55 | 540-5 711-9 25-18) 538-0 704-7 | 20-70 | 540-3 7 20-87 | 536-6 40 26-72 | 545-2 713-3 25-05 | 538-0 704-2 | 20-61} 540-3 687-1 21-37 | 534-9 45 27-11) 544-9 714-4 24-77 | 536-9 704-0 | 20-57 | 540-2 686-8 21-51} 534-6 50 26-15 | 540-5 714-2 25-02 |- 538-1 703-5 20-95 | 540-1 686-5 21-44! 533-6 55 25-75 | 541-1 719-0 24-67 | 537-0 703-3 | ~ 20-70) 539-5 685-6 20-79 | 534-3 Hou Wie 1.26 be | 2 | 3 | 4 ime Hae Yay || eee 10 v0 | 1 12 | 13 us | 1s | 16 [a BIFILAR THERMOMETER, . | 53-2 | 54-0 | 54-4 | 54-4 | 5-2 | 54-4 | 54:3 | 54-0 | 53-7 | 58-7 | 58-5 | 58-0 | 57-2 | 56-8 | 56-0 | 5 BALANCE THERMOMETER, | O34 | 53°9 | 54:2 | 54:5 | 54:5 | 54:2 | 54°3 | 54:3 | 54:0 | 58°5 | 58°75 | 58:2 | 58:0 | 57°5 | 56°6 56:0 | OBSERVER’S INITIAL, . . Ww | Ww H B | B D D H | H H H D B B | BIFILAR. Observed 2™ after the Declination. £=0-:0001248. BaLaNcE. Observed 3™ after the Declination. k=0:000015 approximately. April19413h, When double commas (,,) occur in the column for the Balance Magnetometer, the needle was examined, and no change from the previous tion being appreciable, the Micrometers were not altered. It should be remarked that the permanent observers possess the power os detecting slight ch ng more facility than the occasional or Term assistants. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. 35 ingen APRIL 19, 20. e ation DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BiriLaR | BALANCE vation. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. ) TION. Corrected.| Corrected. in. % bi Se. Div. | Mic. Div. e us Se. Div. | Mic. Div. LS f Sc. Div. ' Mic. Div. % f Se. Div. | Mic. Div. 18}, gh. gh, 6h, 0 25 21-24| 533-9 677-7 | 25 19-71] 530-6 | «+++ 25 28-81| 534-2 669-7 | 25 22-49) 545-5 696-6 5 21-32) 533-5 677-0 19-94] 529-8 686-7 28-64) 533-8 45 21-79) 544-5 696-5 0 21-01) 533-9 676-3 19-93 | 529-5 688-2 28-72) 534-2 x 21-91 | 547-3 696-5 5 21-10} 535-1 675-6 19-93 | 526.9 685-8 29-28 | 533-6 672:6 21:64} 546.4 * 0 21-17] 535-0 674-9 20-58 | 528-0 685-3 28-84] 534-7 674-5 21-21) 545-1 ty 5) 21-53 | 535-2 674-2 20-63 | 528-5 685-4 28-70} 533-7 678-6 20-37 | 545-3 5 ) 21-79} 535-2 674-2 20-54 | 528-6 686-8 28-89} 531-0 676-0 19-83 | 545-8 699-9 5) 21-98] 536-2 673-5 20-81 | 527-6 687-5 28-07} 531-0 Bi 19-61 | 547-9 699-8 d 22-38 | 536-2 672-8 20-13 | 528-8 687-7 28-17 | 533-3 39 19-49 | 549-4 700-6 a 21-89) 536-1 3 21-31] 527-9 688-3 28-07 | 533-6 681-9 19-89 | 549.3 700-5 ) 21-66 | 536-3 . 21-61 | 526-6 Hi 27-78| 532-7 u: 20-57 | 549-2 K ) 21-31] 536-0 A 21-91 | 526-9 688-8 27-74| 533-7 45 21-01 | 547-6 700-3 19h, 23h. 3h, , eR ) 25 21-14] 535-6 669-8 | 25 21-75| 525-7 686-6 | 25 27-41] 534-3 684-0 | 25 21-37)| 549-0 700-3 ) 21-10 | 535-8 672-1 21-91) 525-5 687-1 27-26| 533-6 685-4 21-15} 545-3 A ) 20-38 | 536-8 671-7 22-80] 525-8 687-7 27-06| 536-8 35 20-28 | 543-9 a ; 20-27 | 536-9 673-6 22-58] 526-8 3 26-72 | 538-0 - 19-70 | 545-0 “5 ) 19-86 | 537-8 673-2 23-16| 525-9 687-7 26-69] 537-9 7 19-61 | 546-5 Pr j 19-46| 538-0 | 672-8 23.26| 524-5 i 26-05 | 537-4 i 19-36 | 547-0 ve ) 19-22) 537-8 672-4 23-61) 524-6 687-9 25-85 | 537-7 os 19-67} 546-0 PP ' 19-15} 538-2 675-7 23-86 | 524-5 ay 26-37 | 538-0 688-4 20-18] 546-8 3 ) 18-92 | 538-8 675-3 24-44) 524-2 686-0 25-88 | 536-9 689-3 20-84] 546-1 a 18-68 | 538-0 | 674-9 25-09] 525-3 ty 26-25 | 539-8 :, 21-21] 544-3 < i) 18-66 | 537-5 676-5 25-16| 524-6 i 25-21] 535-6 690-8 21-19) 545-7 700-6 ) 18-63 | 538-9 676-1 25-22'| 525-2 686-0 25-85 | 539-1 691-6 21-79| 544-9 > 204, ob, 4h. gh, } 25 18-59| 538-5 | 675-7 | 25 25-52| 527-4 | 684.3 | 25 25-41| 540-6 iy 25 21-41| 546-3 \ 18-62! 538-4 676-7 26-08) 527-3 684-2 25-54] 542-0 691-0 21-59) 546-5 699-6 18-46} 538-3 676-7 26-82) 525-1 ap 25-41 | 540-6 693-2 21-35 | 547-3 699-8 18-63 | 538-5 679-6 26-55 | 523-6 sa 25-27) 538-2 693-4 | eee eee 547-1 697-8 18-35 | 538-0 679-1 26-42} 527-9 683-8 25-41] 538-6 693-6 20-61} 547-5 694-6 18-45 | 537-8 682-5 26-80 | 526-3 5 25-07 | 539-2 op 20-63 | 548-2 694-8 18-50} 538-1 678-4 27-07 | 525-2 683-1 24-67] 538-9 a 20:54) 545-9 694-9 18-33| 537-8 | 679-0 26-97 | 525-0 be 24-67| 540-0 20-94| 544-9 A 18-59) 537-5 679-0 26-82) 523-7 5D 24-67 | 539-4 694.2 20-99 | 543-7 695-6 19-89| 539-0 679-0 26:97 | 524-4 os 24-82) 539-8 696-6 20-97] 543-1 695-7 21-02] 538-2 679-0 27-16 | 526-7 680-5 24-51 | 540-0 698.2 21-05} 543-6 698-7 22-25] 533-8 681-7 27-04! 527-4 9 24-60 | 540-2 698-2 21-17| 543-6 698-5 21h, 14, 5h, gh, 25 20-77| 534-6 681-2 | 25 27-20| 528-9 678-0 | 25 24-27] 539-6 698-2 | 25 21-24) 543-6 698-8 . 21-46| 535-7 ne 26-53 | 531-3 | 675-1 24.27| 541-3 n 21-31] 543-2 He I 21-28| 532-4 c 27-54| 529-6 | 676-5 23-93 | 541-5 i 21-37 | 543-6 a I 18-79| 534-2 682-3 27-41) 528-7 674-8 23-91 | 540-0 45 21-31) 544-1 696-8 : 18-86 | 534-4 op 27-47) 531-2 672-6 23-73 | 540-8 698-6 21-31) 545-5 695-4 " 19-10} 534-2 681-3 27-80} 531-0 x 23-29) 540-9 oC 21-31) 544-9 694-4 3 19-09 | 533-2 | 685-0 27-56| 526-7 a 23-24| 539-7 * 21-35 | 545-2 4 3 19-22 | 532-6 - 28-23 | 527-9 i. 23-46 | 543-7 sf 21-31] 544-6 4 / 19-63 | 531-6 A) 28-84] 529-5 671-6 22-92) 543-3 697-4 21-69 | 544.3 6 : 19-58| 529-1 682-1 28-75 | 530-0 op 23-06 | 543-7 697-2 21-37 | 543-8 op D 19-67} 530-4 682-4 28-34| 530-4 A 22-92 543-4 697-0 21-42 | 544-8 aa 19-34} 530-3 680-3 28-54) 531-6 3 22-76 | 542-8 696-8 21-64] 544-6 694-8 EE CC ee Lan THerMomerer, . | 538 528 | 52:2 52:2 527 | 538 | 548 | 557 56-1 | 56-2 | 56-3 56:3 | 560 55:9 | 55:6 55:6 | 55°6 NCE THERMOMETER, 54:5 | 53:4 528 | 528 53:0 | 54:0 | 54:8 | 55:4 | 55-6 | 56-0 56:0 | 56-0 55°7 55:6 | 55:5 55°7 | 55:9 j i ‘ { ) BIFILAR. Observed 2™ after the Declination. k—0°0001248. ! : BALANCE. Observed 3™ after the Declination. k=0-000015 approximately. 36 Géttingen Mean Time Tablination DECLINA- Observation. TION. Min. o 2 0 25 17-61 5 12-23 10 9-40 15 7-24 20 7°85 25 9-00 30 10-72 35 13-51 40 15-83 45 17-74 50 18-73 55 18-65 0 25 18-41 5 18-38 10 19-12 15 19-93 20 20-41 25 21:01 30 19-96 35 19-89 40 20-03 45 20-20 50 18-99 55 18-13 0 25 17-98 5 17-98 10 17-91 15 17-45 20 15-93 25 15-09 30 13-17 35 12-72 40 10-72 45, ! 11-73 50 12-50 55 11-96 0 25 11-69 3 10-55 10 9-87 15 9-40 20 9-81 25 10-11 30 10-11 35 9-67 40 9-34 45 8:57 50 9-00 55 9.24 Hour, BIFILAR THERMOMETER, . TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. BIFILAR | BALANCE DEcLINA- Corrected. | Corrected. TION. Se. Diy. | Mic. Dry. =} 4 104, 473-2 578-3 1 25 9-00 482-0 569-1 9-27 500-1 577-1 10-29 514:5 589-1 10-88 519-0 592-0 11-15 518-6 593-2 11-96 522-3 600-2 12-94 520-1 610-2 13-46 512-5 621-5 15-09 506-9 628-4 15-43 498-4 634-2 15-90 495-6 639-2 16-53 114, 500-3 638-2 | 25 17-07 506-0 | 640-1 16-70 510-9 638-5 15-86 515-0 638-6 15-84 516-6 637-8 15-86 517-2 636-0 15-56 515-1 634-3 15-14 515-6 631-9 15-19 514-3 631-8 15-30 311-0 631-6 15-56 512-2 629-7 15-86 514-4 628-8 15-43 1 512-8 629-2 | 25 15-29 509-8 629-5 15-66 510-0 627-7 17-83 514-9 621-7 18-41 519-7 613-6 18-41 514-1 610-1 17-88 509-6 606-3 18-28 499-4 607-8 18-25 502-1 605-8 18-03 500-6 604.4 17-98 495-0 604-6 18-01 495-1 599-0 18-55 134, 493-3 594-1 | 25 17-78 490-1 593-1 17-98 486-0 ; 18-01 486-0 4 17-86 486-7 601-0 17-39 488-9 595-7 18-06 488-1 593-4 18-06 488-6 593-8. 17-88 487-2 591-5 17-31 487-9 593-1 17-34 487-9 595-6 17-15 489-1 599-0 16-84 10 ll 12 | 13 May 26, 27. BIFILAR Corrected. BALANCE Corrected, DeEcuINa- TION. Se. Div. Mic. Diy. 2) e 144, 491-4 599-0 | 25 17-04 492-2 599-0 17-04 490-7 600-3 16-95 490-1 606-3 17-20 493-5 606-3 16-84 492-9 607-5 16-70 493-8 607-5 16-78 496-4 613-7 17-39 497-0 616-2 16-91 499-8 617-7 16:31 502-8 622-1 16-58 B0520 |." o 17-02 152, 503-7 = ‘lips azz 507-5 if 17-02 511-4 * 16-67 512-1 619-8 16-46 511-0 is 16-53 510-1 ff 16-91 509-2 a 17-14 509-7 - 16-91 509-2 - 16-48 508-7 621-7 16-55 507-2 623-8 16-57 506-9 16-60 164. 508-5 5 25 16-41 511-0 628-6 16-57 510-1 es 16-71 509-1 631-1 16-98 509-0 631-9 17:29 509-3 635-8 17-14 509-9 55 16-97 508-7 640-6 17-07 508-6 641-2 17-91 508-1 643-1 17-88 508-6 ¥ 17-14 506-5 644-8 17-54 17h, 506-5 645:3 | 25 17-71 O78 de 17-83 507:3 , 18-21 507-0 645-2 18-53 508-1 646-0 18-55 507-9 647-1 18-55 506-9 649-3 18-70 506-1 ¥ 19-13 506-7 <3 19-44 20504: ae 19-39 505-7 649-6 19-78 505-9 650-3 21-12 | i i161 16 | 17 | 18 55-2 | 55-0 | 54-4 | 55-9 | 55-9 | 55:9 | 558 | 557 | 554 BIFILAR Corrected. Se. Diy. ike} 504-3 504-5 504-1 503-8 503-0 502-6 502-7 501:3 501-1 500-0 500-3 499-6 192. 498-2 497-3 497-3 497-1 496-6 496-1 495-7 494-4 493-4 493-3 492-6 491-0 20, 490-8 490-1 489-2 488-2 486-6 486-6 486-7 486-0 485-9 482-7 483-8 483-2 2A 482-6 482-9 481-8 482-1 481-9 482-1 480-7 480°3 480-4 478-5 477-0 476-2 BALANCE Corrected. DEcLINA- TION. Mice. Div. Se. Diy. 22h. 649-9 478-5 651-5 21-14] 479.3 652-3 21-34] 477-4 654-1 21-49| 478.8 654:8 21-31] 480-3 654-8 23-79| 474-6 655-8 23-81 | 472-7 656-4 23-21| 476-5 As 23-41 | 477-8 658-0 23-64] 477-8 658-6 93-91] 478-3 i 24-20| 479-9 23h, 658-8 24.60| 479-7 660-9 24-77| 481-4 i. 25-29] 481-5 2 25-38| 483-4 e 25-61| 485.3 25-96 | 483-7 26-42 | 486-4 660-8 26-43 | 486-9 3: 26-77 | 484-4 659-7 27-17] 485-8 . 27-33| 485-4 iy 27-54| 486.8 02, 661-1 27-76 | 489-1 . 27.90| 490-6 663-5 28-18} 491-7 664-3 28-34] 492-6 665-7 28-44] 492-0 666-6 28-50] 493-4 i 28-70| 494-3 668-4 28-88} 495-9 671-2 29-11] 495-7 - 29-15| 495-7 668-2 29-17} 497-0 3 29-31| 497-0 jh, 668-4 29-29 497.2 668-1 29-31] 498-0 a : 497-9 666-6 663-6 661-2 660-6 659-8 658:°8 660-2 659-2 20 | 21 | 22 | 23 53-8 537 | 538 | 542 BIFILAR Corrected. BALANCE THERMOMETER, OBSERVER’S INITIAL, B BIFILAR. B B B 55:5 | 55°6 | 55°6 | 55°6 | 55:5 | 55°5 p | D 55:3 | 55-0 | 544 p| >| w W Observed 2™ after the Declination. k=0°0001205. BALANCE. Observed 3™ after the Declination. .4=0:000015 approximately. 4 May 2741» 30™, Clock error previously + 148. Clock set right. 54:5 54:0 | 54:0 | 540 wy ye a | ae Bat Corr Msc. DO { TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. JUNE 21, 22. 37 ination ‘yation. DEcLINA- TION. lin. eKonrouncrcouroned Ji a—) moe Ye 25 29-98 29-91 29-82 29-85 29-62 29-51 29-44 29-63 29-44 29-31 29-31 28-94 28-65 28-67 28-64 28-59 28-64 28-64 27-96 27-83 27-83 27-47 27-29 27-61 27-43 27-80 27-31 26-84 26-94 26-52 26-30 26-22 25-98 25-95 25-81 25:48 25-39 25-27 25-14 24.94 24-74 24-47 24-06 23-88 24-47 24.64 24.47 24-17 BIFILAR Corrected. Se. Div. Qh. 504-5 505-2 504-0 502-9 501-3 501-2 503-5 507-4 509-9 511-4 509-7 507-1 3h. 512-4 508:5 509-7 512-0 513-6 509-6 505-0 505-9 505-8 May 26, 27. BALANCE DECLINA- Corrected. TION. Mic. Diy. MS Ud 644-8 | 25 23-91 645-8 23-93 649-8 24-00 650-4 23-86 651-4 23-53 654-2 23-43 648-0 23-26 653-0 23-04 is 23-26 654-6 23-36 657-4 23-53 . 23-53 és 25 23-26 660-0 23-14 660-8 23-12 “ 23-26 661-4 23-12 663-3 23-12 666-0 23-12 i 22.99 665-6 22-72 667-1 22-74 664-3 22-65 664-8 22-65 663-4 | 25 22-65 = 23-17 is 23-26 f 23-26 664-9 22.49 4 21-98 ” 21-78 669-8 21-91 pa 21-24 ., 21-14 5) 21-24 673-0 21-44 » | 25 22:38 a 22-65 . 21-84 a 21-76 op 21-34 53 21-24 673-2 21-55 ” 21-69 673-7 21-62 671-2 21-84 - 21-95 21-98 | 55-3 | 55-7 BIFILAR Corrected. Sc. Div. 62, 514-5 514-7 515-5 512-4 510-6 510-9 510-2 510-9 512-4 513-9 515-4 513-5 me 512-7 510-4 510-7 511-7 512-9 512-7 512-2 512-4 512-0 512-0 512-4 511-4 8h, 514-1 514-0 515-0 515-9 512-7 512-3 512-6 511-5 509-5 511-1 511-4 513-3 gh, 513-4 512-1 510-9 511-6 012-5 513-9 514-3 513-4 512-0 511-0 509-7 508-3 | 5574 BALANCE Corrected. Mice. Diy. S 673-1 674-4 673-6 674-5 DECLINA- TION. BIFILAR Corrected. | Corrected. Se. Diy. 10%, 512-8 511-5 510-9 511-0 508-9 509-8 510-0 509-7 508-4 507-9 507-1 504-4 rie 504-1 505:8 506-5 506-8 505-1 504-6 506-0 505-6 505-7 5095-5 504-1 504-3 rok 505-0 505-6 504:5 503-6 503-3 502-9 502-5 503-4 502-9 502-3 502-1 502:5 13%, 502-6 501-6 501-5 501-2 500-5 499-9 DEcLINA- TION. BALANCE Mie. Div. 5 u 668-0 | 25 25-27 25-38 25-27 25-27 25-41 25-43 25-79 26-43 26-50 26-42 26-25 26:10 ” 666-3 ” 666-9 9 be 664-6 25 26-12 25:98 25-95 25:95 25-92 25-72 25-65 25:31 25-27 25-27 25-18 25-16 25-02 24-96 25-01 24-62 24-57 24.60 24.74 24.64 24-40 24-20 23-93 24-08 25 24:03 24-06 24-15 24-27 24-35 23-98 23-79 23:36 23:32 23-30 23-17 23-19 BIFILaRr BALANCE Corrected. | Corrected. Se, Div. 14h, 499-9 499-7 499-9 499.4 500-1 500-9 499-3 498-0 498-9 499.9 500-4 500-2 15% 500-9 501-8 502-1 502-6 502-4 501-7 501-0 500-8 501-3 501-5 502-0 502-5 16. 502-9 503-0 502-5 502-7 502-9 502-3 501-9 501-7 502-1 502-3 502-5 501-3 is 500-8 500-3 499-1 499-2 499-8 499-2 498-6 499-0 498-4 498-1 498-1 497-3 Mic. Div. 656-1 657-7 657-3 658-4 660-3 656-7 657-5 657-9 657-3 655-8 657-9 656-6 657-8 658-3 657-6 656-9 657-8 659-2 659-3 659-6 661-3 662-3 661-6 661-0 659-2 656-8 657-9 657-0 657-3 658-8 660-0 660-4 659-3 659-3 659-2 659-5 658-7 659-1 659-0 660-4 659-5 660-1 660-7 660-5 662-5 660-8 660-6 661-1 ly 62:1 | 61-4 | 60°6 Biri~ar. Observed 2™ after the Declination. k=0-0001205. k=0-000015 approximately. BALANCE. * June 214, AG. AND MET. ons. 1843. Observed 3™ after the Declination. See note, page 38, on the Declination Observations. 62°5 61:9 | 61:0 38 Gottingen Mean Time of Declination Observation. Min. DECLINA- 25 25 TION. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. | BIFILAR Corrected. Se. Div. 18h, 497-1 497-8 498.2 498-4 497-2 497-7 497-3 496-9 496-5 495-8 495-7 494-5 1g, 494-4 495-9 496-4 497-4. 496-5 496-1 496-1 496-1 495-3 495-1 496-1 497-5 208. 496-3 495-9 495-9 496-6 497-4 496-7 497-5 498-4 498-4 497-4 499-4 497-7 OAL 499-6 499-1 499-0 499-1 499-6 498-9 499-8 499-8 499-9 500-7 500-9 500-8 BALANCE Corrected. Mic. Div. 663-7 662-0 663-2 663-5 ”? 9 663-6 2” Pe) 665-3 DECLINA- TION. , ere ecesnn eee teens eee e eens enema eee ween eee sete eeeee wee een eee Peewee eas i ey Peeeeeeee ee eereres Se eeeenes Pewee sees teeter eens ener esoee eaeeseeee Bese eeeee er er verse we eeenene eee eesee ee wereees Co eee cerns Sever enee Tete sere eee eeenee sereeseee Cay Oe eeeeree So oy Cy er ereeees es eeeewes BIFILAR Corrected. Sc. Div. Phe 500-5 500-4 500-4 501-3 501-6 501-7 JUNE 21, 22. BALANCE Corrected, Mic. Diy. 660-0 660-3 661-6 661-4 661-8 DECLINA- TION. ° ’ Beseovece eee eeeeee ee eeeeeee Peer eeeee weeeesees Se ereseee seeeenees De sesewes Cr ry teen ares Se see eeenee ae eeeeeee Pew annee Ae eee eee Peete rene feereneee Ce ee Se or seeeseees wee tenons saw eeeee eww ee eee wre eeeeae eee eeaes Se weeeens ee eee eee Pea eewene eer scene ee tee eeaeee eee seeee Bee ee eee eee eeene BiFILAR | BALANCE Corrected. | Corrected. Se. Div. | Mic. Div. gh, 504-3 641-6 503-9 642-2 503-2 641-9 502-2 643-1 502-7 645-6 503-6 643-0 504-9 642-8 505-3 642-7 504-7 645-6 504-1 645-5 503-5 646-6 503-9 646-3 3h, 503-9 646-4 503-3 647-3 502-8 645-9 501-8 644-9 502-5 643-6 502-9 642-7 503-2 642-3 503-1 642-4 502-7 642-7 501-7 642-7 502-2 642-1 503-5 640-7 4h, 503-7 643-7 504-0 2 504-6 505-6 642-5 506-0 ny 506-4 5 506-9 644-3 507-5 ig 508-5 e 508-4 643-3 508.4 a | 510-1 $i 5h. 509-5 643-8 510-5 cs 510-7 4 511-1 643-0 512-9 i 513-8 x 513-5 648-5 513-2 512-7 tt 512-8 649-4 514-3 . | 514-9 mf DECLINA- TION. Beer eeeee eee tevene eee eneeas eer er ence ee eeeeree ween eee weeeeneee er eeeeeee weet wnee be eenwwes wee eee eee Seeeseeee se eeeenee weseseves Corrected. weer esees wane eeene ee eeweeee pene ewene eer ernses wee ee nee eae eeeees weer eeees Ba Co BIFILAR Sc. Div. | Mie 651 eS or or bo D> D> D>. D> > :| 71-0 | 70-8 | 69 69:3 | 69:6 hee BIFILAR. BALANCE, Observed 2™ after the Declination. Observed 3™ after the Declination. k=0:0001205. k=0:000015 approximately. June 22d 9h 5m, Discovered several fibres of the Declination suspension thread broken, and, on removing the box cover, the stirrup of the magnet was resting on the copper ring. The obseryations of Declination are not given after 21d 22n, as the fibres were probably breaking throughout the day ; the obs before 22h are probably affected by a considerable torsion force. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. 39 eT oI ee ss ksh 7. ti; JuLY 19, 20. tingen n Time of ination ryation.|| ji ~ 2 a - ouone 25 | al ™ ww ronone oes AOCKNononrounone oro So SoMmOoOmrounuon ) D , f | | | ] . i ) | | | i | | UR, . DEcLINA- TION. 25 25 25 ‘’ BIFILAR Corrected. Se. Diy. 104, 506-9 507-7 508-6 509-0 509-7 509-2 509-3 509-4 509-3 508-6 508:8 509-2 sige 509-9 510-5 611-3 511-1 510-4 510-4 509-9 508-8 508-4 508-0 507-1 507-0 eee 507-4 507-5 507-9 508-3 507-9 508-3 508-2 507-6 508-1 507-9 507-5 507-1 tae: 507-1 506-5 906-4 506-3 506-4 506-9 506-5 506-3 506-4 505-5 506-0 506-5 FILAR THERMOMETER, HLANCE THERMOMETER, SERVER'S INITIAL, . BALANCE Mic. Diy. 654-6 ” 655-0 Corrected. DECLINA- TION. 25 17-99 17-89 18-06 10 | u | 2 BIFILAR Corrected. Sc. Diy. 14h, 506-1 506-0 506-6 507-2 506-4 506-2 505-8 505-4 505-7 505-5 504-0 503:8 153 504-3 504-0 504-6 503-6 503-6 502-5 501-4 502-0 501-5 501-5 500-4 501-4 GE 502-2 502-2 502-2 502-8 502-8 503-2 504-6 506-5 507-1 506-7 506-9 508-8 aos 504-3 504.4 503-4 503-3 502-3 502-8 502-0 500-9 501-4 499-7 501-7 501-2 | 13 | 14 | 15 | 16 | a7 | 18 | 19 | 20 | 2 | BALANCE Corrected. Mic. Div. 649-0 648-5 649-8 647-6 646-7 . | 60-4 | 60-4 | 60-3 | 60:3 | 60:3 | 60-0 ' | 60:2 | 60:5 | 60°6 | 60°6 | 60°6 | 60-3 | 60-0 | 59°5 | 588 | 58:2 BIFILAR Corrected. DECLINA- TION. Se. Div. 18h, 500-9 499-7 500-1 500-9 500-6 500-7 500-9 500-3 499-8 499-9 499-3 499-4 19, 498-4 497-8 18-05 17-89 17-88 25 17-61 17-39 17-31 17-74 17-47 17-47 17-32 17-31 17-14 17-20 17.34 17-81 25 17-88 17-88 17-88 18-23 18-48 18-01 18-01 17-88 17-81 18-01 18-48 18:55 25 18:59 18-80 18-99 19-22 19-22 19-80 19:95 19-70 19-96 20-37 20:50 20-52 57°6 59°7 | 59-0 | 582 BALANCE Corrected. 647-1 648-4 Jah) ot oe) pe | ey a | (| ae ee | oe BIFILAR. BALANCE. Observed 2™ after the Declination. Observed 3™ after the Declination. k=0:0001205,. k=0:000015 approximately. Mice. Div. DECLINA- TION. Sc. Div. 22h, 490-7 491-7 492-3 492.7 492-9 492-5 491-7 491-7 492-0 491-9 491-4 490-2 Done 490:8 490-2 491-5 492-2 490:8 488-3 487-2 489-8 490:8 489.2 487-7 489-8 Or 488-8 487-1 489-9 488-7 490-5 490-0 490-2 490-8 490-2 489-7 489-9 489-8 ee 489-1 489-6 491-0 490-5 492-1 e bo : bo bo ive) BIFILAR Corrected.| Corrected. BALANCE Mic. Div. 58:0 | 57-9 | 57:8 | 57-6 | B75 | B75 Bis iw|w | w 40 TrermM-DAy OBSERVATIONS OF MAGNETOMETERS, 1843. Gottingen JuLy 19, 20. Avuaust 25, 26. Mean Time eo ae DECLINA- BiFILaR | BALANCE DECLINA- BiFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECcLINA- BIFILAR Baul Observation. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected.| Correg Min. ° U Se. Div. | Mic. Div. oy ae? Se. Div. | Mic. Diy. a v Se. Div. | Mic. Div. Se. Div. | Mie. ( Qh, 6h, 104, 14, 0 25 27-46| 497-0 640-8 | 25 21-96} 509-7 658-3 | 25 21-73| 506-4 | *815-8 | 25 21-10| 503-3 794 5 27-60 | 496-2 > 21-88] 509-4 ee 21-12} 507-5 812-9 20-65 | 502.4 794 10 27-61| 497-9 A 21-64] 509-6 is 20-70} 511-4 | 813-0 20-25 | 501-8 | 797 15 27-51| 497-2 642-0 21-78} 510-3 = 22-05 | 508-0 813-1 20-61 | 500-8 798 20 27-54 499-2 Be 21-86} 510-7 a 22-22) 506-8 813-4 20-40 | 500-6 798 25 27-36 | 498-1 a 21-78} 511-0 655-1 22-58 | 504-5 816-0 21-14) 501-8 79 30 27-29) 498-9 3 21-79} 512-1 5 22-45 | 503-5 815-1 21-32} 502-5 798 35 27-14) 499-0 642-2 21-78] 511-8 a 22-03 | 504-7 A 21-10} 503-1 40 26-73 | 499-4 < 21-53| 512-2 se 22-02| 506-0 a 22-82) 501-2 | 79% 45 26-75 | 499-5 “5 21-48] 511-8 E 22-65} 508-9 811-8 23-88 | 499-4 799 50 26-59 | 498-9 ¥ 21-44| 511-7 * 23-04| 510-7 re 25-93| 498-7 | 79% 55 26-26 | 498-9 € 21-44| 511-2 s 23-74| 507-4 fe 26-89 | 500-0 | 792 3h, es 114, 15}, 0 25 26-15 | 499-2 646-9 | 25 21-58} 510-3 ze 25 23-27! 507-7 810-6 | 25 28-12| 500-1 78 9) 25:95 | 498-9 a 21-78} 510-0 = 23-43 | 510-4 808-1 28-68 | 499-7 785 10 25-68 | 499-7 a 21-82} 509-8 nA 23-50 | 509-6 5 27-96 | 501-6 778 15 25-31 | 500-2 645-6 21-91) 510-1 i. 23-29 | 507-9 807:3 27-24 | 500-6 77 20 25-14! 500-8 ss 21-91 | 510-2 Ep 23-39 | 506-4 oe 26-45 | 501-6 77 25 24-89 | 502-1 as 21-93) 510-7 35 23-24) 506-4 809-2 25-78 | 505-5 77 30 24-60 | 502-6 645-5 22-13] 510-9 3 23-24) 506-9 808-2 26-01} 505-5 77 35 24-37 | 503-2 i 22-11| 511-8 e 23-14| 507-7 = 25-95 | 503-5 | 76 40 24-15| 503-5 7 29-15 | 512-4 “ 23.26 | 506-4 r 25-271 503-9 | 76 5) 24-10 | 504-4 648-3 22-08 | 511-5 f 23-57 | 507-0 810-1 24-85 | 503-7 7 50 23-86 | 504-2 5 22-38 | 511-4 655-4 23-91 | 506-6 807-9 25-07 | 499-7 76 55 23-66 | 506-0 A 22-42 | 511-1 Be 24-20 | 505-0 a 25-07 | 499-5 76 4h, gh, 12h, 162, ‘ 0 25 23-76| 507-5 649-5 | 25 22-43) 510-3 Pr 25 24-10] 507-4 806-0 | 25 24-15] 498-2 | 76 5 23-59 | 507-1 Ep 22-47 | 510-0 = 24-13 | 506-7 803-9 23-32 | 498-1 763 10 23-39 | 507-9 3 22-47 | 509-9 655:3 | 23-79 | 502-8 Pe 22-60 | 497-7 76: 15 23-26 | 507-7 os 22-45 | 509-5 “3 23-44 | 504-6 | 796-7 21-27| 498-5 ; 20 23-12) 508-2 55 22-52) 509-8 x 24-00 | 505-0 = 20-94} 500-1 76 25 23-12] 507-4 3 22-58 | 508-9 _ 24-45 | 507-5 3 20-01} 501-1 762 30 22-99 | 507-1 650-1 22-58) 509-5 % 24-08 | 509-3 799-4 19-63 | 501-7 764 35 22-79 | 507-3 53 22-58 | 508-9 a5 24-28 | 509-9 796-4 19-26 | 501-7 765: 40 22-65 | 507-2 652-1 22-52) 509-1 39 23-64 | 508-7 a 19-40] 499-9 76 45 22-58 | 507-2 a 22-43 | 509-5 of 22-97 | 507-7 792-7 19-63 | 496-9 771 50 22-58 | 507-4 ae 22-45 | 509-8 a 22-15 | 507-5 s 18-55 | 500-1 ¥ 55 22-45 | 507-8 654-5 22-45 | 509-8 53 21-93} 509-7 5 20-05 | 497-2 774 5h, gh, 134, 0 25 22-38| 507-7 a 25 22-52) 510-5 aS 25 22-74] 512-1 791-1 | 25 5 22-45 | 508-1 é. 22-45 | 510-1 a 23-19] 511-1 | 790-9 10 22.45 | 507-5 - 22.45 | 509-8 a 23-21| 511-6 x 15 22-38 | 508-5 5 22-45 | 508-9 53 23-04 | 513-5 786-3 20 22-38 | 508-7 As 22-35 | 509-9 2 22-63 | 514-0 a 25 22-38 | 507-9 656-3 22-02) 509-4 Bs 22-83 | 513-2 ee 30 22-18} 508-6 a 21:98 | 509-4 = 22-97 | 512-1 785-4 35 22-05 | 509-0 658-5 21-91 | 508-9 a 22-85 | 510-0 5 40 21-98 | 509-8 as 22-05 | 509-7 2 22-50) 507-0 788:5 45 22.05 | 509-1 h: 22-32] 510-3 f 22-18| 505-5 | 790-6 50 21-98 | 508-8 a 22.32] 509-6 x 21-73 | 504-5 ) 55 21-90 | 508-6 658-2 22-35 | 509-0 651-8 21-56 | 504-5 792-5 Hour,’ .. 4 He 3 4 |e [96 or | se | v9 uo f to: aul faerie fae BIFILAR THERMOMETER, 57°3 | 57-6 | 57:7 582 57-9] 64-1 | 64:2 | 64-2 | 64-0 | 637 64:2 BALANCE THERMOMETER, i 57°5 | 57-5 | 57:8 | 57°9 | 58-0 | 58°2 2 | 58-0 | 58-0 OBSERVER’S INITIAL, . aes H | B | B | D | D | w | w H | H | H | H BiIrILaAR. Observed 2™ after the Declination. k=0:0001205. BALANCE. Observed 3™ after the Declination. k=0°000015; k (August) = 0:000014 approximately. * The readings of the Balance Magnetometer during the August term are not comparable with those on the previous or succeeding tern owing to re-adjustments of the instrument. ; TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. 4] ttingen Aveust 25, 26. un Time tination DECLINA- BIFILAR | BALANCE DEcLINA- BIFILAR | BALANCE DECLINA- BIFILAR ryation. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. Corrected. Min. > u Se. Div. | Mic. Diy. U Se. Div. | Mic. Div. Se. Diy. ; 182, Q9h, gh, 0 25 16-37 | 494.9 792-0 | 25 22-20| 485-3 809-3 | 25 28-01] 505-0 5 16-08 | 498-9 793-2 22-76 | 482-8 811-0 27-76 | 504-9 10 16-77 | 496-9 796-1 22-92 | 484-8 5 27-70 | 506-4 15 16-21 | 498-9 3 22-77 | 481-4 814-8 27-76 | 504-0 20 17-20| 498-6 51 22-49 | 483.3 815-2 27-43 | 506-5 25 17-17| 496-5 | 796-7 23-64| 483-2 At 27-36 | 504-5 30 16-50| 495-7 i 23-44| 483-2 i 26-91| 507-3 35 15-90 | 495-3 796-1 23-81 | 484-6 815-2 27-11} 506-9 40 15-90 | 497-7 “ 23:95 | 483-2 815-2 26-96 | 503-2 ! 16-58 | 495-7 iy 23-91 | 482-4 813-8 26-66 | 503-0 50 17-20 | 493-1 797-1 24-27 | 485-2 811-4 28-23 | 504-3 35 17-07 | 491-6 S 24-40] 485.2 % 26-77 | 507-7 194, 23h, 3b, 0 25 16-91) 492-5 A 25 25-25 | 484-4 810-5 | 25 26-43 | 508-5 0) 16-95 | 491-1 798-2 26-43 | 481-1 813-5 26-55 | 508-4 0 16-94} 490-6 798-8 26-28 | 480-1 812-0 26-40) 507-9 td 17-91 | 489-3 802-0 26-39 | 480-5 813-3 26-45 | 509-1 20 18-62 | 488-3 es 26-05 | 484-3 811-0 26-37 | 511-2 5 18-99 | 486.3 804-0 27-29 | 479-8 813-8 25-95 | 507-8 40 19-33 483-5 805-2 26-75 | 480-5 813-3 25:63 | 507-1 5 19-53 | 484-0 805-3 26-86 | 482-4 813-2 25-39 507-1 10 19-36 | 485-1 805-6 28-03 | 484-7 814-7 25-41) 509-2 15 19-56 | 485-7 a 27-76 | 483-4 814-4 25-21) 504-2 0 18-45 | 486-8 804-8 28-57 | 482-0 814-4 25-05 | 504-6 ih) 18-86 | 485-4 | 28-37 | 487-1 813-2 24-62 | 504-0 204, 0h, 4h, 0 25 16-53} 488-3 i 25 28-20| 487-9 | 811-4 | 25 24-47| 505-3 5 20-05 | 488.4 f 28-59| 490-9 | 811-2 24-47 | 504-0 0 19-83 | 490-2 P 28-91 | 490-9 : 24-47 | 504-6 5 18-18| 492.0 uf 28-97| 495-6 | 809-6 24-04} 502-8 Xi 21-66 | 493-0 ye 29-51] 493-2 | 809-4 23-93 | 503-3 5 21-51| 490-4 | 801-2 29-26] 493-0 | 810-5 23-64| 502-8 0 21-21| 491-6 | 802-3 29.65| 493-6 | 809-9 23-53| 502-2 5 20-14] 492-3 | 800-6 29.73| 497-1 | 809-2 23-53| 502-8 ) 20-23 | 487-2 | 798-2 29-48 | 497-2 | 810-0 23-37 | 503-7 5 19-12] 490-4 | 796-8 30-12| 498-0 | 808-6 23-26 | 502-6 0 18-68 | 490-8 K 30-29 | 496-3 = 22.96| 505-3 5 19:83)\\ic-..~ iY 29.58| 492-9 | 810-3 23-12| 506-9 PANS iP ; ane 0 25 21-17| 488-6 802-1 | 25 29-51) 497-3 808-9 | 25 22-76| 505-9 5 21-10) 490-6 802-8 28-37! 500-5 805-9 22-65 | 506-1 10 20-30 | 489-1 803-4 29-44) 498-5 as 22-58 | 504-6 15 21-14) 487-1 802-5 29-17} 503-3 We 22-45 | 505-4 0 19-98 | 488-5 801-7 29-08} 501-9 5 22-29} 505-1 15 21-55 | 482-9 805:5 28-95) 501-0 809-7 22-09 | 507-3 0 21-78) 485-9 33 28-94} 503-5 811-9 21-98; 510-0 15 21-76 | 487-4 803-2 28-77) 501-3 813-0 22-03) 511-1 0 21-66| 483-0 | 804-1 29.29| 500-9 ir 21-73 | 510-2 {5 19-89} 486-1 803-7 28-30| 502-0 * 21-48} 508-8 ‘0 21-37) 486-7 805-9 28-23} 503-2 815-9 21-26 | 508-6 6 22-58| 485-1 | 807-2 28-08| 502-7 i 21-15 | 509-0 ia 18 | 19 | 20 a1 | 22 | 23 | o | 1 | 2 ANCE THERMOMETER, . | s1-0 60-2 | 59°8 61:5 | 60°8 | 60:4 eon Pepe p el Observed 2™ after the Declination. Observed 3™ after the Declination. BIFILAR. ‘BALANCE. MAG. AND MET. ozs. 1843. a 59'7 | 60-0 | 61-0 | 62:2 | 63-4 | 64:5 | 65:2 | 65-0 | 64-7 | 64:1 | 63:9 | 60:1 | 60°5 | 61:2 623 | 632 641 | 64:7 k=0°0001205. DECLINA- TION. BALANCE Corrected. Mice. Div. ? 818-0 | 25 21-07 2 20-85 817-6 20-79 a 20-95 “ 20-81 : 20-75 819-5 20-70 zs 20-70 823-7 20-70 822-7 20-70 » 20-61 m4 20-57 823-8 20-57 . 20-57 A 20-70 823-5 20-70 a 20-88 . 20:88 828-1 21-04 830-3 20 97 829-0 21-04 831-3 21-10 831-8 20:97 832-1 21-14 831-6 21-31 832-0 21-31 831-6 21-05 ri 20-95 z 20-60 830-8 20-41 831-3 20-27 832-4 20:57 832-5 20-82 832-1 20-70 832-0 20-67 i 17-20 832-0 15-59 830-4 15-12 < 15-96 : 17-20 830-3 18-01 ‘a {8-12 828-8 18-52 827-2 18-55 828-0 18-55 828-8 19-10 64:5 | 64:3 | 64:0 | 63:9 etetstriet te os k=0:000014 approximately. Corrected. BALANCE Corrected. BIFILAR Mie. Div. Se. Diy. 6h, 507-6 508-7 507-8 508-0 506-8 507:3 507-7 506-5 507-4 i 507-5 819-9 Bors)” Pe 506-6 7h, 506-5 507:1 507-6 507-6 506-7 506-7 506-5 507-6 508-0 508-2 509-3 509-0 8h, 508-7 507-1 508-8 511-6 512-7 512-6 513-5 514-5 512-0 508-0 504-8 506-6 gh, 512-0 517-7 519-1 rf 518-3 514-5 512-6 511-1 i 509-4 i. 509-5 i; 828-3 826-9 826-1 826-0 829.6 99 63:0 | 625 Ww | 42 Gottingen | Mean Time of Declination Observation. Min. THiour, DECUINA- TION. o 25 15-49 25 25 16-41 16-84 16-01 14-76 14.49 TERM-DAyY OBSERVATIONS OF MAGNETOMETERS, 1843. Se. Diy. 104. 510-0 508-0 508-6 511-2 513-8 517-6 519-3 BIFILAR THERMOMETER, . BALANCE THERMOMETER, OBSERVER’S INITIAL, . Sept. 204 14h 35m, tions visible. BIFILAR. Bright auroral glare fron NW by N to N, extending from the horizon to about 12° altitude. BIFILAR Corrected. BALANCE Corrected. SEPTEMBER 20, 21. DECLINA- TION. Mic. Div. 2 ¢ 806-4 | 25 16-85 807-6 | 16-60 806-6 19-09 803-9 22-23 801-0} 32-20 797-9 34-58 796-1 32:17 795-9 29-06 7953 26-57 796-3 24-10 796-7 23-93 798.2 24-50 800-9 | 25 23-76 801-8 22.29 802-7 20-52 803-5 20-05 801-1 19-31 801-3 1 771 804-2 17-42 804-3 16-77 804-0 16-33 803-3 16-51 803-6 16-53 803-8 15-72 804-1 | 25 16-67 804-6 16-53 805-2 16-13 7 16-26 . 15-86 a 15:59 a 15-86 E 15-86 . 16-43 x 17-44 és 17-59 e 17-24 806-3 | 25 17-05 f 16-80 © 16-55 16-50 4 16-75 804-1 17-88 803-3 17-89 800-1 18-59 . 19-17 799-0 19-27 795-8 19-83 793-5 20-32 | 10 11 12 65:0 | 652 | 65°3 BIFiLaR Corrected. Se. Div. 145, 508-0 507-3 13 14 65:3 | 651| 65:0 BALANCE Corrected. Mic. Div. ° 4 DECLINA- TION. 790-9 | 25 20-41 788-8 19-87 bf 20:37 784-4 20-37 754-9 20-37 709-9 21-68 668-7 23-26 652-0 22-99 651-5 22-06 654-2 21-64 666-7 21-22 678-4 20-23 687-3 | 25 19-53 691-3 19-17 693-8 18-55 698-4 17-56 703-1 17-51 708-9 “ 16-53 715-5 15-91 720-5 15:77 725-5 15-19 731-5 15-72 735-6 15-49 741-0 14-82 a B55 15-17 744.5 14-28 746-1 14-49 748-5 15-16 5. 15-32 a 15-16 754-6 15-16 760-5 15-59 765-1 15-83 a 15-64 z 15-88 55 14-65 ss 25 15-22 _ 15-49 766-8 15-16 be 15-74 772:3 15-19 P 14-89 ye 14-65 ™ 14-51 775-9 15-96 = 16-53 é, 17-83 A 17-98 15 | 16 | il | BIFILAR Corrected. Sc. Div. 18", 503-0 504-5 504-1 503°3 18 | 19 20 BALANCE Corrected. Mic. Div. 777-1 DECLINA- TION. 25 25 21 | 22 23 | o |i 64-9 | 64:7 | 64:7 | 64:5 | 64-0 | 63:9 | 64:0 | 64:5 BAL, . Corree BIFILAR Corrected. Sc. Div. | Mic. D 19-98 20-35 20-72 21-05 20-30 19-40 20-85 19-96 21-14 21-91 21-37 22-35 22-50 22-20 22-90 23:09 24-71 24-18 23-95 22-80 23-64 23-59 23-26 24-11 24-85 26-08 27:88 26:96 26:86 27-46 27-70 27-93 27:78 27-93 27-58 27-41 27-47 27-73 27-06 65°4 64:5 | 64:9 | 65:2 At 154 the aurora had disappeared. 65:2 | 65:3 | 65:3 k=0-0001205. k=0:000013 approximately. 65-2 | 65-1 | 65:0 | 64:8 | 64-4 | 54-2 | 64:5 Pelee el te eee Observed 2™ after the Declination. BALANCE. Observed 3™ after the Decljnation. 65:0 | 65:4 No pencils nor pul TERM-DAy OBSERVATIONS OF MAGNETOMETERS, 1843. 43 D tingen SEPTEMBER 20, 21. OctToBER 18, 19. n Time Bison DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BriFriLtAR | BALANCE DECLINA- BiFILAR | BALANCE rvation, TION. Corrected. | Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. lin. ° ¢ Se. Diy. | Mic. Div. ° ‘ Sc. Diy. 4 Mic. Div. | © od Se. Div. | Mic. Div. G B Se. Div. | Mic. Diy. Qh, 6h, 108. 144, 0 25 26-32) 500-0 799-6 | 25 22-43] 506-3 ia 25 16-11| 518-9 | 816-5 | 25 20-01) 517-5 737.4 | BS 26-32 | 501-9 4 22-16| 506-2 827-9 16:03) 519-0 nig 19-81} 517-8 Me 10 26-57 | 505-4 803-2 22-30) 505-2 a 16:53} 520-8 815-8 19-29| 518-3 788-7 15 26-57) 507-1 800-5 20-34) 510-7 822-4 17-58} 521-2 sy 19-15] 517-3 ” 0 27-81] 509-8 799-9 20-05 | 513-8 821-4 17-78 | 520-0 814-2 19-44] 516-4 3 25 28-28 | 508-5 800-5 21-05| 513-5 o 17-38 | 519-5 a5 20-81| 514-9 5 30 28-28) 506.5 801-1 21-17| 509-4 “ 16-80} 516-1 811-6 21-79| 513-2 7 35 27-38) 502-6 801-2 20-75 | 510-0 a 15-93| 517-5 809-2 21-71] 513-6 784-2 10 27-61] 502-0 801-1 20-43 | 514-9 3 16-60} 520-2 809-6 20-63] 515-8 779:3 15 27-27) 502-2 798:8 21-12) 519-0 $14-8 17-32) 520-7 807-8 20-55 | 516-5 774-2 0) 27-24) 502-5 799-2 21-78] 521-4 # 17-64] 519-2 806-4 20-47 | 515-4 770-2 5 27-61 | 507-0 797-1 21-76| 516-2 813-8 17-17 | 525-5 Lr 19:87] 515-4 | 765-9 ar, 74, 114, toe, 0 25 27-27| 507-2 797-8 | 25 20-65| 508-0 819-7 | 25 17-34| 521-4 804-0 | 25 19-89| 514-8 761-3 5 27-20) 507-2 5 21-01 | 498-9 828-7 17-24 521-9 801-1 20-61 | 512-9 759-7 0 26-80} 505-3 33 19-63} 497-0 837-1 15:99 | 520-7 799-9 21-88 | 509-6 35 5 27-13} 509-7 796-7 16-98 | 492-0 847-1 15-12} 521-4 55 22-87 | 504-6 754-0 0 27-14) 512-8 a 10-01 | 494:6 845-8 14-67 | 522-4 798-2 23-76 | 501-7 751-9 D 27:74) 517-4 794-6 4-42 | 506-1 840-2 15-05 | 523-6 795-5 95-18] 500-4 747-8 0 27-80) 515-1 795-1 3:58 | 510-4 838-9 15-76 | 522-0 798-8 26-75 | 500-2 744-0 5 27-06} 511-5 Fr 4-19} 511-1 836-4 15-63 | 520-2 797-3 28-14} 500-7 737:5 0 26-86] 510-9 Dp 6-77 | 515-5 $3 15:19] 519-0 | 798-3 29-02| 501-6 | 730-4 5 27-04} 511-5 797°8 9-25 | 511-8 836-2 14-83 | 519-6 796-4 29-78 | 502-0 724-2 0 27-11) 511-2 ae 10-59 | 507-3 833-0 16-31} 518-7 = 29-83 | 505-9 715-5 5 26-72 | 512-4 fe 9-60| 504-7 | 829-4 16:68 | 515-9 r 29-58| 509-9 | 711-0 4, gh, 12h, 16", 0 25 26-48] 512-1 799-2 | 25 8-46] 505-1 827-6 | 25 16-52| 514-4 797-3 | 25 29-33] 514-3 706-4 5 26-39| 512-4 * 8-85| 509-7 | 824-0 16-35 | 514-6 de 28-72| 510-5 | 700-4 0 25-76 | 512-0 ” 10-88} 511-3 823-0 16:17} 515-5 794-9 27-70 | 522-1 693-9 5 25:99} 511-1 ” 12-74} 512-0 817-7 15:96] 514-5 3 25-79 | 527-4 689-7 : 25-72) 509-7 of 13-75 | 512-2 815-8 15:86| 514-8 Pe 24-62 | 529-0 686-1 5) 25-48} 509-6 BS 14-85 | 511-6 x 16-23 | 513-4 796-2 22-90| 528-1 682-3 0 25-25] 509-3 ” 16:06) 507-5 813-7 16-82} 513-1 794-5 20-34} 528-2 684-6 5 24-78} 510-5 ” 17-02} 507-8 810-6 16-51} 513-1 e 18-45 | 527-6 688-7 U 24-25 | 509-3 ” 17-69} 506-1 ne 16:53} 514-0 3 17:76 | 524-8 694-7 24-11) 517-1 »” 18-82] 505-3 as 16-78 | 513-4 nh 16-71 | 523-4 697-7 : 23-98 | 513-9 807-5 19-02) 505-7 809-2 17-17 | 513-6 a 16-28 | 521-9 703-5 5 22-72} 513-5 809-4 19-12| 505-2 a 17-41 | 514-2 i 15-43 | 519-3 706-9 5, gh, | 13), 17%, U 25 21-96| 514-1 812-8 | 25 19-46| 504-9 +A 25 17-64| 515-3 796-1 | 25 15-00| 517-4 710-8 o 21-88} 515-2 815-0 19-36 | 505-6 * 17-64| 515-8 5 15-25 | 517-1 719-6 j 20-67 | 516-8 817-6 19-36) 508-1 803-8 17-17} 515-2 AS 15-56 | 514-7 724-3 ‘ 20-40) 517:8 819-5 19-39] 509-6 . 17-:76| 515-0 796-0 15-14] 513-5 728-9 0 20-63 | 522-3 820-6 19-36) 510-3 801-3 18-10} 514-8 ep 15:56! 512-8 734-8 p 20-72| 521-4 821-0 19-60] 509-2 817-3 19-09} 515-0 17-39| 523-9 | 855-0 19-44| 520-2 | 841-8 17-89| 522-6 | 841-8 513-1 if 17-67| 524.2 | 854-1 19-33| 521-0 hi 17-94] 522-7 | 840.9 512-7 if 17-81| 524-4 | 851-4 19-22] 521-0 | $39.4 17-64| 523-8 | 840-4 512-7 is 17-15 | 524-5 | 850-0 19-06 | 522-4 4 17-88 | 522-8 ¥ 512-6 f 114, 15h, 19}, 23h, 17-39 | 524-5 | 850-3 | 25 20-23] 523-0 | 835-4 | 25 17-91] 522-9 | 840.3 512-8 | 839-1 17-20| 523-7 | 848.3 18-92| 523-6 | 837-3 17-88 | 522-6 4 512-2 ¥ 16-67 | 523-2 | 846-9 18-62| 522-9 . 17-91| 522-3 | 840-3 sluz | s40-7 16-71| 522-5 | 846-7 18-55 | 522-9 ts 18-03 | 521-6 | 839-3 512-6 | 840-4 16-51| 521-9 | 851-4 18-62| 522-6 | 836-7 18-28 | 521-4 | 838-8 513-1 | 842-6 16-40| 521-4 | 851-3 18-55| 522-8 i. 18-43| 521-4 | 839-0 512-9 | 843-9 16-41| 521-0 | 853-3 18-30| 523-4 | 833-6 18-39 | 522-2 | 837-8 512-1 | 845-1 16-46 | 520-3 | 855-2 18-23 | 523.8 iY 18-55 | 521-8 3 510-1 | 845-8 16-28| 519-2 | 856-1 17-89 | 523-7 | 832-8 18-38 | 521-7 3 511-2 F 16-01| 519-9 | 859-6 18-25 | 522-7 ii 18-41| 521-4 | 837-3 510-7 | 846-6 16-40| 519-7 | 861-6 18-25| 521-8 | 834-2 18-12] 521-7 | 836-8 510-3 | 847-3 16-40| 519-8 | 860-8 17-62| 522-7 | ,, 18-01| 522-1 | ,, Sii3;| 12h, 164, 204, 04, 16-40| 518-6 | 859-5 | 25 17-34] 523-7 | 833-4 | 25 17-89] 522-8 | 838.2 510-7 | 848-9 16-04] 519-7 | 860-5 17-20| 523-9 | 836-4 17-88 | 522-3 | 838-1 511-3 ‘ 16-06| 518-8 | 861-6 16-97 | 524-0 55 17-91| 522-5 : 511-2 + 15-86| 518-2 | 863-4 16:78 | 523-9 i 17-92| 522-6 | 838-6 511-8 | 851-1 16-01| 518-4 ¥ 16-67 | 522-9 | 835.2 17-91| 522-6 | 838-7 511-7 | 852-5 16-40| 518-5 | 864-9 16-37 | 524-1 iF 18-26 | 522-1 | 840-1 Blie7 f 16-68| 519-0 | 865-2 16-46| 523-9 | 835-7 17-94| 521-4 | 840-7 511-7 ig 17-07| 518-8 | 866-4 16-85 | 523-8 ¥ 17-88 | 521-5 | 841-3 510-7 a 17-09| 519-1 | 865-4 17-09| 523-4 | 836-0 17-81| 521-5 | 842-2 512-2 | 854-0 17-83| 518-7 | 866-5 17-24| 522-8 hi 17-89 | 522.2 | 841-6 513.0 if 19-51| 517-6 | 864-0 17-07 | 523-3 ¥ 18-10] 521-6 | 842.0 512-1 ‘ 20-03| 518-5 | 861-1 17-07| 523-8 | 838-2 17-86| 522-0 | 842-4 512-6 | 854.8 13h, 17h, 21h, 14, 21-89| 521-3 | 855-4 | 25 17-20] 523-2 | 838-0 | 25 18-06] 521-5 | 842.4 512-7 | 854-8 21-89| 522-7 | 850-7 17-27| 523-5 i 18-01| 520-8 | 842.3 513-0 | 856-5 21-88 | 522-2 | 846-7 17-44| 522-6 x 17-81| 520-4 | 842-1 512-7 A 21-08| 521-9 | 840-9 17-20| 523-0 | 844.4 17-85 | 520-2 | 842.5 512-1 | 857-4 19-65| 521-3 | 837-4 17-22] 523-2 a 18-01| 519-4 | 840-5 512-3 | 858-2 18-23 | 522-2 | 835-5 17-25 | 523-1 | 848-2 17-98| 518-7 | 840-8 513-9 . . 17-27| 522-3 | 833-2 17-20| 523-3 | 848-5 18-01| 517-9 | 840-2 514.2 | 857-6 . 16-68 | 522-2 i} 17-07 | 523-8 | 845-2 17-78| 519-1 | 838-9 514-1 | 856-2 16-84] 521-2 | 834-7 17-09 | 524.0 4 18-15| 518-1 | 837-8 514-8 if : 17-45| 520-8 | 844-8 17-00| 524-0 | 847-3 18-06 | 517-4 | 837-4 516-0 ‘; 17-74| 520-4 e 17-17 | 523-9 jy 17-88| 517-3 | 837-4 515-6 if 17:54| 520-9 | 845-0 17-44| 523-1 | 847-2 18-21] 517-3 | 837-1 515-0 | 855-6 Bo EP ep 3 LAR THERMOMETER,. . 14 | 628 | 530 | 53-2 548 | 55:2 55°7 55:6 | 65:3 | 65°8 | 55°8 | 65:5 55:6 | 55-0 54-7 | 54-4 ANCE THERMOMETER, 522 | 530 | 635 | 54-0 | 55-9 | 56:3 | 57-0 | 56-7 | 57-0 | 87°65 | 87-5 | 57°3 57-0 | 570 | 565 | 565 D a 22 eee SERVER'S INITIAL, . .. . | D D p|u|u u|u|s|s|s B w | w wiw BiFiLtaR. Observed 2™ after the Declination. k=0-0001300. BALANCE. Observed 3™ after the Declination. k=0-000014 approximately. . MAG. AND MET. oss. 1843. = 46 TEeRM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. Gottingen NovEMBER 24, 25. DeEcEMBER, 20, 21. Mean Time H of i Declination DECLINA- BIFILAR | BALANCE DECLINA- BiFILAR | BALANCE H DECLINA- BIFILAR | BALANCE DECLINA- BiriuaR | BALA Observation. TION. Corrected. | Corrected. TION. Corrected. | Corrected. } TION. Corrected. | Corrected. TION. Corrected. | Corre Min. ° if Se. Div. | Mic. Div. s if Sc. Div. Mic. Div. | 2 7, Se. Div. | Mic. Diy. Sc. Div. Mic. oh, 6h, 10%, 144, 25 20-40] 514-4 855-6 | 25 18-38] 518-5 866-8 | 25 17-27) 516-0 839-8 516-0 20-30} 515-4 855-0 18-35} 518-7 867-8 17-85 | 516-1 5 516-5 20-30! 515-0 = 18-33 | 518-9 868-4 | 17-69 . 840-0 516-9 20-16} 516-1 855:8 18-36 | 518-8 ! 17-72 . a 516-4 20-20} 516-7 856-3 18-28 | 519-0 . 17-96 : 5 : 517-0 20-03} 516-9 on 18-19} 519-3 8-3 | 17-88 . 839-5 517-4 20:05 | 517-3 854-8 18-32} 519-2 9 | 17-76 . 833-9 217-2 20-20 | 517-7 856-3 18-39 | 519-3 57-2 | 17-69 : 516-4 19-91 | 517-9 ks 18-25 | 519-0 8 | 17-64 : 515-8 20-20 | 518-2 = 18-23] 518-7 8 | 17-27 : . 516-5 19-91 | 518-6 856-5 18-32) 518-7 6-9 f 17-36 . : 516-9 19-89} 518-2 856-7 18-38 | 518-6 : 17-56 : 516-8 32, Tie : Po 19-86 | 517-6 856-1 18-39| 518-8 : 17-47 : 517-2 (90 2D OD CO OD OD OO © 0 oO GO 19.56| 517-4 857-0 18-38 | 518-8 : 17-42 . . 516-9 19-60} 518-8 857-5 18-41} 518-8 2 f 17-74 . 517-5 19-70) 518-2 858-2 18-48 | 519-0 JB 17:89 . 517-1 19:49 | 516-8 858-8 18-50 | 518-7 3:0 | 17-86 : : 517-7 19-47 | 516-8 858-3 18-52) 518-5 Oo | 17-76 . 518-0 19-22) 516.2 858-9 18-48 | 519-1 “fh | 18:30 . 517-9 19-20 859-1 18-46 | 519-0 0 | 18-25 . . 518-0 19-3] : 858-7 18-35 | 519-0 ail | 18-53 : . 518-2 19-22 } 859-5 18-05 519-2 ‘lf 18-43 . . 518-5 19-24 “ 859-5 18-32) 519-1 8 | 18-41 . . 519-1 19-44 : 859-7 18-32} 518-9 . 18-21 : 518-2 : 8h, 16%, 19-39 . 860-1 18-41| 519-3 : 18-41 : 518-3 19-46 ) 859-9 18:35) 519-5 18-43 : : 519-0 19.22 . 859-7 18-41 | 519-5 . 18-25 : : 518-9 18-97 : 859-4 18-39| 518-7 0 | 17-38 . 519-3 18.72 . 859-9 18-01} 518-8 15-93 . 519-5 18.72 . 859-9 18-16} 518-7 : 15-77 : : 518-7 18-68 . 860-4 18-15| 518-9 56-6 | 16-53 . . 518-6 18-89 : 861-0 18-16; 518-2 4 | 17-25 . “2 518-9 18-68 : 862-1 18-25 | 518-7 : 17-88 : . 519-3 18-72 . 861-9 17-94} 518-4 18-15 a: : 520-0 18-70 : 861-8 17-85 | 518-7 ‘Oo | 18:38 . : 520-4 18-75 : 861-6 17-69 | 518-2 3-4 | 18-23 : 19-24} 520-0 : gh, : te 18-75 : 865-4 17-38 | 520-1 . 17-96 . 19-80 | 518-7 18-72 : . 17-34 | 519-1 6 | 17:79 : 19-89 | 518-1 18-72 : : 17-47} 518-9 |. “7 | 17-89 . 19-70 | 519-0 18-65 . : 17-62 | 519-1 ‘8 | 18-21 : 19-67 | 519-2 18-59 “ 17-47| 519-1 : 18-55 . 19-22} 519-7 18-55 : 17-32] 519-0 -1 | 18-62 . 19-12] 520-1 18-62 : : 17-24) 518-9 18-86 : 5 19:00 | 520-1 17-27 | 518-6 8 | 18-53 : 825-9 18-68 | 520-4 . 17-34) 518-0 18-79 . 829-1 18-63 | 520-6 18-57 : ; 17-74) 517-5 . 18-70 }. 827-3 18-68 | 520-2 17-85 | 517-1 6 | 18-55 . i 18-62) 520-0 17-89 | 517-0 2 | 18-55 , 827-4 18-55) 520-1 OO GO OO OO OO b 0 00 C&O & OO & j ! BIFILAR THERMOMETER, . | 54-6 | 54-9 | 548 | 54:1 | 53-9 | 54-0 | 542 | 545 | 540 BALANCE THERMOMETER, | 56'8 | 57:0 | 56°7 | 56:2 | 55:9 | 56:0 | 56°5 | 56:5 | 56:3 OBSERVER’S INITIAL, . . | H | Cc | C Cc | C B | D W BIFILAR. Observed 2™ after the Declination. &=0:0001300, BALANCE. Observed 3™ after the Declination. &k=0:000014 approximately. TERM-DAY OBSERVATIONS OF MAGNETOMETERS, 1843. DrEcEMBER 20, 21. nation DEcLINA- Birizar | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR | BALANCE DECLINA- BIFILAR ‘yation. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected. | Corrected. TION. in. ° S Se. Div. | Mic. Div. e « Se. Div. | Mic. Div. 5 “ a i Mic. Div.jf ° “i Se. Diy. 18}, 20h. gh. 6, 0 25 18-53 | 520-4 824-6 | 25 17-27) 516-2 834-5 | 25 20-88| 517-7 840-7 | 25 20-63] 516-5 5 18:55 | 520-6 825-0 17-31 | 516.0 i 20-99 | 517-8 841-8 20-79 | 515-6 0 18-46 | 520-2 824-5 17-27) 515-9 3 20:94} 517-8 33 20-63 516-2 5 18-52 | 520-3 823-4 17-41] 515-8 835-2 20-77 | 517-8 844-3 20-61 | 515-7 0 18-55 | 520-1 823-2 17-58 | 515-7 834-6 20-65 | 517-9 35 20-61 | 514-7 5 18-63 | 520-2 823-8 17-64} 515-9 834-3 20-77 | 518-2 842-7 20-55 | 513-9 0 18-63 | 520-1 826-2 17-74.| 516-0 834-8 20-70 | 518-8 845-5 20-30] 514-2 5 18-55 | 520-2 824-6 17-86 | 515-7 835-1 20-60 | 518-2 843-8 20-13 | 513-7 0 18-72} 520-0 825-7 17-88 | 515-3 835-4 20-57 | 518-7 844-5 19-76 | 513-1 5 18-62} 520-1 826-1 17-92] 515-2 835-2 20-57} 518-9 844-6 19-76 | 514-4 0 18-68 | 520-0 826-3 17-98 | 515-4 835-6 20-57 | 518-7 PF 19-81} 514-3 5 18-68 | 519-4 826-2 18-21] 515-2 835-7 20-54] 518-6 843-9 19-94} 513-0 19}, 23h, 3h, 72, 0 25 18-55 | 520-0 828-2 | 25 18-35| 515-0 836-7 | 25 20-48 | 518-5 843-9 | 25 19-74) 513-7 B) 18-57 | 520-1 830-6 18-41} 515-5 838-1 20-43 | 518-5 $5 19-60 | 513-4 0) 18-55 | 520-0 830-8 18-52} 514-8 839-9 20-40} 518-6 843-0 19-80} 513-2 5 18-68 | 519-5 i 18-68 | 514-7 840-3 20-25 | 518-7 30 19-83 | 513-4 9) 18-62) 519-6 830-1 18-63 | 514-5 841-2 20-27 | 518-5 843-0 19-27| 514-9 5 18-62} 519-6 830-7 18-70} 514-7 841-4 20-25 | 518-9 3 19-84] 515-8 ) 18:55 | 519-7 2 18:79} 514-6 842.3 20-30} 519-0 843-1 19-89} 515-2 ) 18-55 | 519-3 830-5 19-07} 514-6 843-3 20-38} 518-3 35 20-10} 515-5 18:55 | 519-1 831-6 19-15} 515-3 842.4 20-27} 518-1 842.1 20-01} 515-4 d 18-50 | 519-2 831-1 19-06| 515-0 843-2 20-37 | 518-0 “0 19-83 | 516-3 ) 18-35 | 519-2 $32-2 19-36] 514-1 844-3 20-38 | 518-3 3 20-32] 516-3 18-35 | 519-2 | 831-1 19-06| 514-3 | 843-5 20-43 | 518-5 | 841-3 19-86 | 516-1 205, 02. 4h, gh, ) 25 18-41] 518-7 831-1 | 25 19-22] 513-7 % 25 20-43 | 518-9 840-0 | 25 20-21| 515-3 b 18-33 | 518-8 i 19-36| 514-1 ae 20-18] 519-4 . 19-83| 514-9 ] 18-16| 518-7 832-5 19-33 | 514-0 843-0 20-07 | 518-9 840-1 19-83 | 514-5 18-01 | 518-4 830-8 19-36 | 513-9 842-1 19-98} 518-1 es 19-40] 513-5 18-01} 518-3 832-7 19-39 | 514-0 842-1 19-89| 516-7 839-6 19-06} 512-5 18-01 | 518-3 831-4 19-65 | 514-0 840-3 19-86] 516-8 839-9 18-50 | 514-1 18-01 | 518-3 832-1 19-42} 514-0 ie 19-70| 518-8 An 18-13 | 514-5 18-01} 518-0 hy 19-78 | 514.4 54 19-67 | 519-9 838-7 17-83 | 513-4 17-92) 518-1 ; 19-93 | 514-8 839-2 19-81} 521-3 838-8 17-25 | 514-1 17-92} 518-2 831-8 19-93 | 515-4 os 19-89 | 519-7 840-4 17-22} 515-1 17-88 | 518-0 831-9 20-38 | 515-7 3 19:96 | 517-6 841-1 17-88 | 514-6 17-88 | 517-9 “ 20-67| 515-5 | 838-6 19-86 | 517-3 ie 18-01 | 512-7 21%, 14, 5h, gh, 25 17-81 | 517-3 833-2 | 25 20-63) 515-5 837-8 | 25 19-83] 517-0 840-0 | 25 17-64) 514-0 17-67 | 517-5 833-9 20-67 | 515-7 837-3 19-60 | 517-4 Ps 17-67 | 515-0 17-67 | 517-6 832-7 20-70} 515-6 838-0 19-29 | 517-6 841-1 17-54} 514-9 17-56 | 517-3 834-2 20-70 | 515-7 55 19-34] 517-1 841-8 17-20 | 515-1 17-49 | 517-3 834-6 20-67 | 515-9 95 19-24} 518-2 “p 17-27 | 515-5 17-45 | 517-2 834-8 20-68 | 516-3 838-3 19-60} 515-5 844-3 17-47 | 514-8 17-38 | 517-0 834-2 20-82} 516-4 838-5 19-89} 515-4 A 17-29| 514-8 17-32) 516-8 834-4 20-75 | 516-6 PH 19-73 | 517-3 an 17-34 | 514-7 17-:27| 516-7 833-9 20-97 | 517-3 839-0 19-83 | 518-0 842-1 17-34| 514-2 17-27| 516-8 834-3 21-08 | 516-8 840-2 20-03 | 517-7 <6 17-12) 513-7 17-24} 516-4 834-0 20-72) 516-8 840-6 20-43) 517-8 841-5 13-84 | 515-3 17-20| 516-3 834-0 20:82 | 516-9 841-7 20-43 | 518-7 841-3 9:85 | 518-4 dn, 18 19 | 20 21 | 22 23 | 0 1 (e 3 4| 5 6 | nan Tuzrmomerer, . | 57-0 | 57-0 | 57-0 | 57-2 | 57-0 | 56-4 | 561) | B61 | 56-4 | 56-7 | 570 | 568 | 56:3 | ats) 8 a ANce Tuenmomeren, | 59-3 | 59-1 | 59°5 | 59-6 | 59-2 | 58-4 | 58-5 | 58:5 | 58-6 | 59-0 | 59:0 | 58:6 | 58-2 47 BALANCE Corrected.| Corrected. Mice. Div. 841-2 840-1 840-1 839-8 840-0 839-7 839-8 840-0 839-9 840-6 ” 841-7 843-2 842.3 840-5 840-1 840-8 §39-2 835-7 834.6 835-4 835-3 835-4 836-0 ” 833-5 833-4 834-1 831-1 830-1 832.8 834-3 833-8 831-0 830-6 829-4 829-3 829-9 831-2 830-6 829-2 829-2 822-9 821-6 eee: | 9 | 10 56-0 | 554 | 55-0 | 54-6 57°6 | 57:0 | 563 | 55°7 RVER’S INITIAL, . . | >|» Dawn) ow | aw: ww | a Fl ee De) De w | k=0-:0001300. k=0:000014 approximately. BIFILAR. BALANCE. Observed 2™ after the Declination. Observed 3™ after the Declination. EXTRA OBSERVATIONS OF MAGNETOMETERS. MAKERSTOUN OBSERVATORY, 1843. 50 EXTRA OBSERVATIONS OF MAGNETOMETERS, JANUARY 2—FEBRUARY 14. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. Gottingen Mean Time. 5 . 5 . ‘ Gottingen ; : Min. Reading Min,| Reading .| Reading Wash: a Min. Reading Min. Reading 2 Reduced. of Cor- Cor- of | \Redueed, of Cor- ) Obs. Obs.} rected. s.| rected. , Obs. Obs.| rected. || Obs.| recte m. 2 te 6 Se. Div. a Mic. Div. Cy HG : a : Se. Div. 0 |25 25-04 536-6 846-6 | Feb. 6 10 24 56-48 534-5 880-0 25 3-61 524-5 536-7 865-3 | 6-77 22 | 514-5 554-6 856-2 4-75 528-0 555-1 853-9 9-47 32 | 529-5 540-0 853-9 12-88 527-2 535-0 874-1 14.28 532-0 532-3 845-4 17-24 529-9 532-2 846-4 19-33 525-7 531-4 18-65 524-9 —_—_—__|—_|____] Feb. 18-43 524.9 527-0 834-4 18-41 505-1 866-7 | Feb. 23-66 || 52 | 534.3 516-1 871-2 19 23-79 536-8 513-2 883-5 | Feb. 6 20 24-17 540-0 512-5 Se ee 525-9 885-8 | Feb. 13 10 8-17 531-1 535-9 875-8 7-48 534-6 531-2 870-3 7-91 536-7 527-4 863-5 9-87 532-0 523-1 859-6 10-34 526-4 521-9 855-7 9:54 527-5 526-0 849-3 9-27| 32 | 532.4 530-0 840-6 11-89 536-0 532-3 834-7 14-38 537-9 532-9 828-1 17-17 538-2 533-4 824.9 19-49 52 | 539-6 534-2 825-8 21-91 537-0 531-4 811-0 | Feb. 13 11 22-65 534-8 22.32 =) SMESTNT dss ; eae Si 526-5 $99:4 SS a 518:3 852-2 | Feb. 14 8 21-44 526-1 515-1 846-7 15-29 526-1 521-1 843-0 14-06 530-2 519-3 843-9 16-53 530-8 517-5 842-9 18-75 j 530-7 : 842-1 ‘ 21-17 519-0 21-91 521-7 524-2 842-0 17-31 532-2 11-62 543-0 532-1 806-8 5-29 507°7 529-0 798-9 7:38 526-4 798-6 565-8 528-4 797-7 13-17 554-1 534-2 794-9 13-95 550-7 534-1 796-6 16-46 542-7 530-4 800-3 15:69 532-4 533-4 801-7 13-86 527-9 12-36 || ; 530-0 528-9 804-5 | 13-24 534-2 17-14 531-6 20-37 ) 526-9 520-2 834-6 21-31 523-0 538-7 830-1 22-45 524-3 538-7 $24-8 22-67 | BIFILAR. k=0:0001248. BALANCE. k=0:000015 approximately. 51°3 54°-0" 53°8 | 56°-0? 527 | 54°53? BIF1LAR THERMOMETER. BALANCE THERMOMETER. } Feb. 64 98, { 62 118, { 134 114, { For the readings of the Bifilar and Balance Thermometers at the hours of the Daily Observations, see the section containing these ose! vations. EXTRA OBSERVATIONS OF MAGNETOMETERS, FEBRUARY 14—24. 1843. DECLINATION. BIFILAR. BALANCE, ge, | Min.| Reading | Min.| Reading | Min.) Reading 0 Reduced. of Cor- of Cor- Obs. Obs. | rected. Obs rected. Can, lk m. u m. Se. Diy. m. Mic. Div. me 14 10 1 522-9 2 756-9 4 | 25 22-08 6 524-2 7h 759-3 9 16 6 0 | 25 27-34 2 542-0 3 756-1 0 16 7 || 40 10-48 || 42 549.7 43 769-4 45 12-36 | 47 548-3 48 771-7 50 13-25 || 52 542-8 53 770-5 55 12-40 || 57 544-5 58 768-0 . 16 8 0 14-06 2 543-8 3 767-8 5 17-44 7 536-7 8 769:8 10 18-41 | 12 §31-2 13 769-3 15 17-34 || 17 §29:8 18 769-0 20 17-27 || 22 36:8 23 765-2 25 18-15 || 27 534-3 28 766-8 30 17-74 || 32 535-1 33 766-6 35 17-51 || 37 536-0 38 761-4 » 16 10 0 23-19 2 537-8 3 760-6 m 2318 | 0/| 25 21-24] 2) 544.1 | 3] 725-2 50 21-17}| 52 543-9 53 727-5 a3 20 0 21-51 2 543-9 3 723-0 » 23 22 0 27-38 2 528-7 3 725-8 mot 0 0 32-27 || 2 539-1 3 727-8 24 1 | 35 34-21 || 37 538-6 38 731-8 24 2 0 34-68 | 2 538-6 3 735:9 10 36-67 | 12 540-7 1} 738-7 15 36-95 25 38-62 || 27 536-4 28 742-8 30 38-75 || 32 535-1 33 745:0 35 38-72 || 37 531-4 38 746:5 40 38-01 || 42 531-7 43 746-9 45 38-18 || 47 534-5 48 749-2 mot 3 0 40-33 2 536-8 3 751-9 5 40-68 Z 540-6 8 7535 10 41-61 || 12 541-3 13 756-6 15 42.95 || 17 543-5 18 757-4 20 43-09 || 22 539-2 728) 764-1 25 42.43 || 27 539-9 28 768-9 30 41-86 || 32 544-0 33 771-5 35 42.65 || 37 544-0 38 775:8 40 42-53 | 42 544-1 43 780-8 45 41-02 || 47 546-4 48 782-4 50 41-04 || 52 550-4 53 785-4 5) 41-39 | 57 537-9 58 791-1 24 4 0 43-60 2 535-2 3 794-1 i) 43-68 @ 530-4 8 796-6 10 42-08 || 12 523-2 13 798-0 15 41-00 | 17 525-8 18 795:5 20 40-33 | 22 527-1 23 794-3 25 38-01 | 27 534-0 28 792-1 30 38-18 | 32 537-9 33 791-5 | 35 37-81 || 37 | 546-5 || 38 | 789-8 40 38.75 || 42 554-4 43 789-9 45 40-65, 47 558-7 48 791-6 50 40-64 || 52 551-0 53 794-5 BIFILAR. k=0 0001248. BIFILAR THERMOMETER. BaLancr THERMOMETER. } Feb. 244 1h 35m, { Eilat) Sab? 244 51 DECLINATION. BIFILAR, BALANCE. Monn, |3in-| Reading | Min-| Reading ||Min.| Reading 5 of Reduced of Cor- of Cor- Obs. Obs rected. |; Obs rected, Ghy Ing m. Oi 4 m. Se. Div. m. Mic. Div. Feb. 24 4 || 55 | 25 41-41] 57 547-7 58 796-1 Feb. 24 5 0 42-10 2 546-0 3 798-3 5 41-12 Uh 539-2 8 800-5 10 40-73 || 12 537-9 15 40-73 || 17 540-6 18 803-0 20 4]-18|| 22 533-0 25 40-77 || 27 530-5 28 811-2 30 38-15 || 32 627-1 33 819-4 35 36-63 || 37 528-4 38 827-5 40 34-73 || 42 531-2 43 837-0 45 33-34 || 47 533-1 48 853-0 50 31-94 || 52 530-6 53 867-2 55 30-68 || 57 534-0 58 870-7 Feb. 24 6 0 30-62 2 528-9 83 878-6 5 28-20 7 526-3 8 879-3 10 24-37 || 12 532-6 13 876-7 15 22-67 || 17 536-6 18 872-0 20 21-88 || 22 538-5 23 873-3 25 21-44 || 27 534-4 28 876-8 30 22-49 || 32 531-3 33 885-0 35 22.22 || 37 527-3 38 889-2 40 20-14 || 42 532-4 43 881-1 45 19-20 || 47 537-9 48 871-7 50 21-59 || 52 537-9 53 870-6 55 23-29 || 57 541-7 58 873-6 Feb. 24 7 0 24-78 2 545:3 3 867-7 5 28-08 7 544-5 8 868-2 10 32-72 || 12 532-8 13 886-7 15 30-42 | 17 533-5 18 896-1 20 30-02 || 22 533-5 23 911-2 25 27-58 || 27 532-2 28 905-6 30 26-40 || 32 530-5 33 899-7 35 26-66 || 37 531-2 38 891-8 40 27-58 || 42 515-8 43 897-8 45 24-82 || 47 528-9 48 901-4 50 28-15 | 52 527-0 53 894-7 55 27-38 || 57 529-3 58 889-6 Feb. 24 8 0 26-79 2 523-5 3 887:8 5 22-79 7 527-1 8 878-1 10 22-05 | 12 526-1 13 866-0 15 23-06 || 17 §21-4 18 856-4 | 20 22.25 || 22 519-8 23 | 855-9 25 20-10 || 27 519-1 28 853-5 30 19-84 || 32 522-4 33 850-1 35 19:68 || 37 521-0 38 850-0 40 19-07 || 42 521-0 43 845-5 45 18-08 || 47 524-9 48 833-9 50 17-98 || 52 526-0 53 837-6 55 18-26 | 57 528-9 58 830-7 Feb. 24 9 0 18-18 2 531-8 3 826-2 5 19-61 a 532-6 8 821-2 10 21-84 || 12 529-3 13 816-2 15 23-16 || 17 525-9 18 811-1 20 22-25 || 22 523-7 || 23 813-3 25 21-89 || 27 525-7 28 807-7 BALANCE. k=0:000015 approximately. 513 51°8 52°°5 53°1 3h, { bo76 > 244 5h, feed: 244 7h, | e083 244 Qh, { 5a 52 Extra OBSERVATIONS OF MAGNETOMETERS, FEBRUARY 24—-Marou 6. 1843. DECLINATION. BIFILAR, . BALANCE. || DECLINATION. BIFILAR. BALANCE eens Min. Reading Min.| Reading || Min.| Reading Bi | Min. | Reading |Min.| Reading |) Min.| Rea di of | Reduced. || °f Cor- of Cor- Oe | ees, || Cor- of Co Obs. Obs.| rected. Obs.| rected. Obs. Obs.; rected. || Obs.| reet a. h. || m. ai 7 m. Se. Diy. m. | Mic. Div. 4. Al) ance low) 7 | m. Se. Diy. m. | Mic.E Feb. 24 9 | 30 | 25 21-53] 32 | 526-5 | 33 | 806-9 | Mar. 6 6] 0O | 25 28-10] 2) 535-1 3 | 74a 35 21-51| 37 | 526-5 | 38 | 806-2 15 26-281 17 | 526-3 | 18 | 7a 40 20-57 || 42 | 527-0 | 43 | 804-8 20 24-11] 22 | 531-9 | 93 | 75m 45 19-041 47 | 527-4 || 48) 798-1 25 22.82 27 | 538-3 | 98 | 7m 50 18-41] 52 | 527-4 | 53] 800-0 30 22.92 || 32 | 541-8 | 33 | 7éM 55 18-89 || 57 | 525-9 | 58 | 785-3 | 35 23-29 || 37 | 540-4 | 38 | 75a Feb. 24 10 | 0 20-16|| 2 | 527-0 3 | 783-2 | 40 22-06 || 42 | 541-0 | 43 | 758 45 21-21, 47 | 540-0 | 48 | 7a Feb. 25 10 || 0 | 25 16-40] 21] 544.3 3 | 743.2 50 19-71] 52 | 541.5 | 53 | 7m 5 9-84] 7 | 559-0 S| 7364 55 19-54 ; 10 §-40],12 1 567-3." 13 | 730-0 | Mar 6 7] 0 20:08 | 2| 543-4 31, f 15 10-32] 17 | 563-3 | 18 | 730-9 15 23-41|| 17 | 5404 | 18 | 756 20 11-82] 22 | 556-5 || 23 | 729-4 25 21-32 27 | 538-4 | 98 | 7&5 25 13217 27 a) 54920) 28 |) 73-5 30 22.25 30 14-78 || 32.1 538-4 | 33 | 737-7 | Mar. 6 S| 0 95-75 || 2) 54223 3| 76 35 16-89 || 37 | 523-9 | 38] 742-3 15 26-621 17 | 536-7 | 18 | 76 40 15-96] 42 | 516-5 | 43 | 744.9 30 25-92|| 32 | 533-8 | 33 | 76 45 18-92) 47 | 508-3 | 48 | 751-2 45 26-53 47 | 535-7 | 48 | 76 50 21-07 |, 52) 508-3. | 53 | 7525 | Mar- 6 -9 | © 23-03 || 2| 539-4 3| @ 55 91-891 57 | 511-0 || 58 | 752-3 10 19-19] 12 | 5445 | 13 | [él Feb. 25 11 0 22-.45|| 21 515-7 3 | 750-0 15 14-29] 17 | 544-9 | 18] 74 5 23.23| 7 | 519.4 8 | 744-5 20 10-73 | 22 | 552-2 || 93 | 7m 10 93-44 || 12 | 518-7 || 13 | 743-8 25 13-91 || 27 | 9555-1 | 98 | 74 15 21-98|| 17 | 522-5 | 18 | 749-3 30 17-98 || 32 | 545-1 | 33 | 7 20 20-1322) 53025» |) 23) 737-7 35 16-64|| 37 | 538-7 | 38 | 7 25 19-27 || 27 | 535-41 || 28 |. 737-7 40 15-20] 42 | 544-5 || 43 | 7 30 18:75 || 82 |} 536-8 | 33 | 732-8 45 14-65 || 47 | 549-8 | 48 | 7 35 18-46 || 37 | 536-0 || 38 | 732-8 50 16-10] 52 | 9044-4 | 53°) 7% 40 18-12] 42 | 540-4 | 43] 733-1 55 15-86|| 57 | 542-2 | 58 | 7 45 19-26 || 47 | 541-9 | 48 | 732.2 | Mar. 6 10] 0O 15-23] 2| 536-4 3 | va 50 90-40 || 52 | 541-0 | 53] 730-2 | 5 15-52|| 7 | 532-0 8 | a 55 20:87 57 | 539:5 1 58 | 729:7 10 14-51], 12 | 525-8 | 13 | 7 7 a 15 13-32] 17 | 5269 | 18 | 7 Mar. 4 10/]| O | 25 19-81] 2) 534-8 3 | 755-4 20 16-10 || 22 | 518-6 || 93 | 7 5 Dl1Oleove| 53253 8 | 756-4 25 18-99 || 27 | 507-5 || 98 | 7 10 29.03 || 12 | 531-7 | 13 | 756-4 30 15-32] 32 | 5140 | 33 | 7 20 19-70|| 22 | 537-2 | 23 | 744.9 35 15-86 || 37 | 523-0 | 38 | 694 25 17-34 |.27.| 541-8 || 28 |. -735-4 40 18-32] 42 | 528-4 | 43 | 68 30 14-35 | 32 | 542-3 | 33 | 729-1 45 20-00 || 47 | 534-2 | 48 | 6 35 13-81 || 37 | 532-1 | 38 | 730-3 50 19-71 52 | 525-5 | 53 | 69 40 13-07 || 42 | 530-9 || 43 | 732.2 55 15-70 57 | 529-0 | 58 | 45 14.28.47 | 535-2 | 48 | 728-8 | Mar. 6 11] 0 12-51] 2) 527-1 3 50 18-12] 52 | 537-4 || 53 | 728-2 5 9-49] 7 | 530-2 8 55 22.95] 57 | 534-8 | 58 | 726-5 10 $-23|| 12) 519-4 | 13 Mar. 4 11 0 23-23 || 21 530-3 3 | 254 15 6-45] 17 | 513-9 | 18 15 elle wa Soo iS | Feat 20 4-45 || 22 | 522.7 || 93 20 20-43 |.22 | 531-7 | 23 | 723-5 25 4.08 || 27 | 522-7 || 98 30 18-79 || 32 | 527-7 || 33 | 734-2 30 5-70 | 32 | 520-2 || 33 40 19-07 | 42 | 525-8 | 43 | 740-9 35 7-08 || 37 | 517-0 || 38 50 19-09 || 52 |. 533-3 | 53 | 741-1 40 7-26|| 42 | 514-1 || 43 Mar. 4 12] 0 19-96] 2] 532-4 3 | 745-0 45 7:08 47 | 512-3 || 48 | 50 7-55 || 52 | 517-7 || 53 Mar. 5 18 || 0 | 25 29.96]| 2 598.4 3 | 729-4 | 55 8-98 | 57 | 522-2 | 58 30 25.541 32 | 531-8 | 33 | 719-2 | Mar. 612] oO 10-92] 2| 524-6 3 Mar. 5 20|| 0 30:37 || 2] 537-3 Bo). 97122 5 12:58] 7 | 524-5 8 Biritar. k=0:0001248. BALANCE. k=0:000015 approximately. Bavanen Tueamonaren, f Feb. 25¢20%—128, (209. march at ras, (507; evans, {35°8; ox im, (PES Feb. 24410». For the continuation of these observations, see the Zerm Observations. Feb. 25410. Continued from the Term Observations. EXTRA OBSERVATIONS OF MAGNETOMETERS, Marcu 6—7. 1843. 53 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. es Min. Reading | Min.| Reading || Min.| Reading ee Min Reading Min.) Reading | Min.| Reading es of Reduced: of Cor- of Cor- of Reduced: of Cor- of Cor- Obs. Obs. | rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. h. d. m. 2 ( m. Se. Div. m. Mic. Diy. d. h. m. 9 “ m. Se. Div. m. Mie. Div. r. 6 12 | 10 | 25 13-95] 12 521-2 13 702-7 | Mar. 6 17 5 | 25 23-59 7 17:1 8 580-6 15 14-48 | 17 521-7 18 702-3 10 21-84] 12 521-7 13 587-5 30 18-13 | 32 515-3 33 704-5 15 19-89 | 17 522-9 18 595-9 42 507-0 43 685-3 20 18-68 || 22 521-9 23 601-7 45 24-80 | 47 505-6 48 663-9 25 17-11 || 27 521-6 23 608-9 50 27-46 || 52 505-1 53 640-4 30 16-91 | 32 518-4 33 617-6 55 27-16 || 57 522-9 58 636-1 35 16-85 || 37 517-2 38 625-6 wr. 6 13 0 26-01 2 525-5 3} 635-5 40 17-20 || 42 519-6 43 635-6 5 26-19 ie 518-5 8 632-1 45 17-07 || 47 521-9 48 647-7 10 25-43 || 12 509-6 13 620-3 50 17-45 || 52 526-1 53 | | 654-7 15 23-70 || 17 503-4 18 617-2 55 17-98 || 57 526-7 | 58 659-5 20 19-87 || 22 506-5 23 623-0 | Mar. 6 18 0 17-61 2 525-4 3 661-6 25 16-40 | 27 521-6 28 626-8 5 16-67 7 528-8 8 663-8 33 563-8 10 16-84 || 12 §28:5 13 668-4 35 25-22) 37 550-1 38 645-0 15 17-20 || 17 528-3 18 671-3 40 33-49 || 42 543-4 43 639-1 20 17-71 || 22 527-7 23 670-5 45 32-65 || 47 532-1 48 637-8 25 17-72 || 27 529-2 28 672-8 50 29-75 || 52 526-1 53 641-8 30 18-65 || 32 530-3 33 674-6 55 20-54 || 57 534-1 58 651-4 35 19-87 | 37 527-8 38 677-4 w. 6 14 0 12-16 2 540-9 3) 659-8 40 20-58 || 42 526-5 43 684-4 5 8-43 7 546-4 8 658-3 45 21-51 |) 47 527-9 48 688-0 10 7-58 || 12 548-5 13 652-1 50 22-77 || 52 521.7 53 690-0 15 9-67 || 17 540-5 18 648-2 55 23-12 || 57 526-5 58 692-2 20 11-02 | 22 537-3 23 650-9 | Mar. 6 19 0 23-04 Pe 528-3 3 697-0 25 11-98 || 27 536-0 28 645-7 5 23-86 7 527-7 8 700-9 30 14-58 || 32 531-9 33 638-6 10 24.74 || 12 525-1 13 703-7 35 15:52|| 37 526-7 38 633-2 15 24-53 || 17 526-1 18 705-3 40 15-25 || 42 523-9 43 630-3 20 24-60 || 22 527-8 23 705-6 45 14-29 || 47 519-8 48 622-7 25 24-40 || 27 530-9 28 705-7 50 12-16 || 52 519-8 53 617-8 30 24-30 || 32 532-6 33 702-8 55 11-15 || 57 516:3 58 614-4 50 25-75 || 52 531-7 53 702-0 © 6 15 0 9-82 2 516-5 3 613-9 55 26-01 |) 57 530-2 58 703-7 : 5 9-74 7 514-4 8 614-7 | Mar. 6 20 0 25-90 2 530-5 3 705-4 10 9-81 || 12 513-9 13 616-6 25 23-53 || 27 528-5 28 712-5 15 10-52 || 17 513-0 18 619-9 30 23-16] 32 529-3 33 714-1 20 11-19 | 22 |, 512-2 23 621-5 40 22-03 || 42 531-5 43 115-2 25 11-80 | 27 515-0 28 626-9 50 21-91) 52 532-9 53 717-5 30 13-10 || 32 612-3 33 629-7 | Mar. 6 21 0 22-00 2 531-8 3 718-8 35 13-79 || 37 513-7 38 630-1 20 22-08 || 22 527-6 23 721-1 40 14-01 || 42 515-8 43 631-4 25 21-79 || 27 528-8 28 722-0 45 13-15 || 47 515-8 48 632-1 30 23-14 || 32 528-9 33 724-0 50 13-24 50 23-93 || 52 528-6 53 721-3 mo 6 16 0 14-45 2 514-5 3 634-5 Mar. 6 22 0 24.292 2 527-7 3 Gene ' 5 15-76 7 511-6 8 632-8 | Mar. 6 23 5 28-59 7 514-3 8 137-5 10 16-53 | 12 509-2 13 627-4 10 28-72 || 12 513-4 13 437-8 15 18-52 || 17 508-5 18 622-3 20 29-31 || 22 518-2 23 737-8 20 20-16 || 22 504-2 23 619-3 30 30-40 || 32 514-8 33 737-8 25 22-38 | 27 503-0 28 614-4 40 29-78 || 42 517-8 43 737-8 30 23-39 || 32 501-9 33 604-8 35 24-29 | 37 494-5 38 605-7 | Mar. 7 0 0 | 25 30-05 2 521-5 3 739-7 40 27-90 || 42 495-0 43 607-2 | Mar. 7 1 || 20 35°35 45 31-14 | 47 502-6 48 597-6 | Mar: 7 2 0 31-33 2 536-4 3 759-5 50 30-32 | 52 503-8 53 584-1 35 33-92 | 37 530-6 38 765-9 | 5d 27-94 | 57 507-6 58 583-0 | Mar. 7 3 || 40 36-70 | 42 538-4 43 791-2 : k 6 17 0 25-56 2 611-5 3 579-2 45 35-53 | 47 539-5 48 792-2 ‘| | BiFivaR. k=0-0001248. BaLaNce. k=0:000015 approximately. ; . SG irevxoueren. | March 6a ab, | Greg 6a 16%, | F705) 6a 16% Bret 64174, | 270.45 64 18, eeea? 62 19%, { Peaee 567-0 64 20h, { 585" i . March 6214», Auroral light seen through the clouds to NNW. \ MAG. AND MET. obs. 1843. Gottingen “Na Mar. Mar. 7 Mar. 7 visible. Mean Time. we DECLINATION. ExtTRA OBSERVATIONS OF MAGNETOMETERS, Marcu 7—12. 1843. Reading Reduced. 25 39-46 38-18 36:65 36-70 34-65 31-09 31-73 32-75 32117 33-67 35-32 36-13 32-38 29.24 24.40 18.72 16-15 20-16 24-03 30.03 17-18 20.40 27.06 29.80 31-59 26-46 31.64 29.95 35.27 32.38 30.07 31.38 28-01 29.75 30.20 31-59 29.66 26-55 28.64 27.93 29.65 33-31 32.05 32.13 34.28 37.14 38.52 32.40 24.24 18.08 15-56 | 18-66 22.00 23:37 23-23 BIFILAR. BALANCE. é Gottingen Min.| Reading || Min Reading Mean Time. of Cor- of Cor- ‘ Obs.| rected. Obs.| rected. Se. Div. 547-4 549-6 548-6 548-4 543-9 551-0 560-7 551-2 543-9 547-2 555-9 546-7 §45-2 543-7 536-2 540-4 549-4 Mie. Diy. 803-5 813-6 820-5 830-2 $34.3 830-6 a. Mars "7, 8 Mar. 7 9 Mar. 7 10 Mar. 9 7 Mar. 9 8 Mar. 9 6 DECLINATION. BIFILAR. a Reading Brie = Reduced. | ° Ore Obs. sige Obs. | rected. ° , 25 24-13 25 25-14 25-09 25.27 26-03 26-13 25-05 25-31 26-52 26-19 25-52 25-83 Se. Div. ‘627-8 528-0 528-5 529-1 526-8 524-7 528-0 529-3 523-5 522-3 527-7 531-2 528-6 25-73 25-76 24-20 22-89 22-69 21-91 22-11 25-92 540-5 542-7 526-8 524-0 529-2 523-1 534-8 533-9 Mar. Mar. Mar. 25 24-74 21-10 24-42 24-96 21-61 23-07 538-9 561-8 552-5 541-4 539-9 537-0 Mar. Mar. Mar. 11 10 25 21-81 17-94 17-85 17-14 16-75 17-22 18-05 17-38 | 15-90 14-48 13-81 14-98 17-69 19-81 546-3 593-9 550-9 545-1 542-0 527-0 520-7 517-9 518-5 521-1 523°3 526-7 529-8 532-4 Mar. Mar. 12 12 “I Or Mar. 12 9 Mar. 12 Mar. 12 26-00 25-00 45-00 18-00 20-13 23-50 25-61 560-0 5595-0 518-0 544-3 550-7 540-9 BIFILAR. k=0-0001248. BALANCE. k=0:000015 approximately. March 124 134, BIFILAR THERMOMETER. BALANCE THERMOMETER. \ March 12¢ 13, { 2.3 On7 March 74 8h, Auroral arch spanning 90° of horizon ; altitude of apex in the magnetic meridian 10°; breadth of the belt 8°; no penel March 124 5» 30m, (Sunday.) 6 03 23-56] 32) 592-1 43| 1065-6 30 19-61 || 32 441-0 | 33 808-4 53 30:99 72] 594-6 83| 1058-0 35 19-46 || 37 463-6 || 38 803-5 10 43-68 | 12 572-4 ||13 1111-8 40 17-11 || 42 510-5 || 43 801-6 15 33-57 || 15 553-5 45 14-82 | 47 494-4 | 48 826-7 172; 559-5 || 173| 1067-4 50 15-02 || 52 466-7 || 53 802-1 ‘20 32-80 || 20 563-3 ||19 | 1055-7 55 12-04 || 57 483-4 || 58 806-1 22 35°15 | 222) 559-0 | 223) 1032-5 Apr. By {8 0 10-82 || 2 460-3 3 771-4 24 | 1029-4 5 14-93 | 7 476-0 8 764:0 25 35-02 || 25 551-3 10 sys222) I) 112) 502-7 || 13 768-6 Q272| 545-9 | 274] 1023-9 15 18-50 | 17 495-5 || 18 772-2 30 30-85 | 30 547-7 20 18-33 || 22 485-4 | 23 756-6 323| 557-4 | 323) 1023-8 25 18-10 | 27 478-6 || 28 739-0 35 29-65 | 35 571-0 || 36 1043-3 30 15-83 || 32 465-8 || 33 708-7 371| 558-0 || 373] 1040-0 35 15-19 || 37 445.3 || 38 672-9 40 32-69 || 40 550-6 40 14-76 || 42 459-6 || 43 660-5 421| 553-1 |422| 1037-5 45 14-01 || 47 465-9 || 48 671-8 45 31-01 || 45 570-2 || 46 1057-2 50 19.24 || 52 472-2 | 53 683-7 474| 577-5 ||473| 1061-6 55 20-99 || 57 467-3 | 58 679-2 50 32-17 || 50 572-0 Apr. 5 10 0 20-47 || 2 468-1 3 679-5 521| 575-3 | 523) 1073-0 3 16-23 || 7 461-8 8 692-3 55 33-27 || 55 594-7 || 56 1095-1 10 16-20 || 12 482-5 || 13 700-1 574| 618-8 | 572} 1104-0 15 15-79 || 17 518-4 || 18 697-2 m5 7 0 37-88 || 0 627-2 1 1124-0 20 18-65 || 22 496-8 || 23 673-7 23| 612-7 23} 1124-9 PX) 19-17 || 27 473-4 || 28 628-0 5 39:97 || 5 610-4 30 23-90 || 32 472-9 || 33 625-0 74| 607-0 74| 1113-3 390 25-52 || 37 451-0 | 38 618-8 10 51-94] 113} 558-5 | 11 1052-0 39 491-5 123| 547-6 || 123] 1029-6 40 19-89 || 41 485-0 14 58-62 42 477-8 | 43 660-7 15 58-12 || 15 568-0 || 16 1014-9 45 12-00 || 47 479-2 ||48 667-7 17%] 602-8 ||173) 1028-4 49 468-1 | 20 52-82 || 20 608-2 | 21 1068-3 50 7°73 || 52 481-2 | 53 638-4 | 221) 584-2 || 222| 1074-3 54 485-4 25 58-25 || 25 553-0 || 26 1027-9 55 2-15 || 57 486-5 | 58 619-8 274| 505-1 || 273) 1008-5 59 491-3 50-15 || 30 467:-3 Apr. oy 0 4:75) 1 500-6 BIFILAR. k=0-0001248. BALANCE. k=0-000015 approximately. BIFILAR THERMOMETER, mp ol UO on ayy, J) OUTS BALANCE Tapes hee es a ARIES tose: aes { 50°0" April 54, See notes on the Aurora, p. 61. MAG. AND MET. oss. 1843. 58 EXTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 5. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE, Paes Min.) Readin g Min.| Reading | Min.| Reading ee os Reading Min.| Reading | Min.| Readi of | Reduced. || of Cor- of Cor- Of Wi mcduoed. Won Cor- of 01 Obs. Obs.| rected. || Obs.| rected. Obs. Obs.| rected. ||Obs.| reete d. d. m. S a m. Se. Diy. m. Mice. Div. id. “hy m. id § m. Se. Div. m. Mie. D Apr. 5 11 2 500-4 3 634-6 Apr. 9 13 34 460-6 : 5 | 25 5-80 6 534-0 Jon| 2p 38-9 || 35 455-5 7 544-5 36 452-7 8 546-1 8 688-1 37 466-2 37 502 10 | 25 6-541) 11 540-4 38 473-8 38 521 12 533-3 13 718-0 39 491-3 15 | 25 4-55|| 16 513-7 40 6-41 || 40 501-9 17 516-1 18 711-4 41 517-9 19 520-7 k 42 526-9 42 507 20 | 24 55:61] 22 530-0 23 690-6 43 530-8 43 482 24 536-4 44 531-9 25 | 24 56-21) 27 534-4 28 656-7 45 12-90 || 45 528-0 30 | 25 2:-03|| 32 526-1 33 624-5 46 516-0 35 5-31 || 37 522-1 38 620-5 47 507-1 47 388. 40 4-69 || 42 513-5 43 616-3 48 498-6 48 39] 45 4:39 || 47 510-6 48 619-0 49 488-4 50 5:94|| 52 507-6 53 626-1 50 20-16 || 50 484-1 55 6-54 || 57 504-2 58 627-1 51 484-3 4 Apr. 5 12 0 8-65 2 501-9 3 623-5 52 484-5 52 417 5 11:24 7 497-3 8 627-1 53 487-6 Oe, 421 10 10-85 || 12 498-3 ila? 634-4 54 490-7 15 9-76 || 17 498-2 18 624-4 55 18-18 |) 55 489-1 20 11-13 || 22 498-0 23 616-4 56 487-5 25 12:87 || 27 496-1 28 610-8 57 485-4 57 4 30 15-02 || 32 489-1 33 597-7 58 483-2 58 41] 35 15-32 a 481-2 38 572-7 59 479-0 40 14-60 || 42 471-8 43 551-2 Apr. 5 14 0 22.5 0 476-4 q 45 11-69] 47 | 4742 | 48] 543-1 2| 467-9 | 3| 428 50 10-55 || 52 485-0 53 562-1 4 468-5 55 11-26 || 57 482-3 58 583-0 ) 20-68 5 468-0 Apr. 3 13 0 14-55 2 458-9 3 579-8 6 467-7 j 5 15-32 7 435-9 8 541-1 7 469-4 7 442 10 20-20] 11 410-3 10 16-10 || 10 472-7 8 450 12 413-5 12 504-0 11 474-3 } 13 422.2 13 486-9 12 4758 13 462 14 461-0 ‘ 14 486-5 15 23-43 || 15 461-4 | 15 14-67 || 16 492-6 16 453-2 it7é 495-4 iN7/ 430-9 17 418-5 18 499-4 18 45: 18 428-0 18 400-9 19 499-6 19 448-2 20 20-58 || 21 493-3 4 20 31-38 || 20 478-3 22 489-0 22 42 21 516-1 24 487-1 23 429 22 539-7 22 480-5 25 23-91 || 26 479-7 " 23 559-0 23 487-2 27 477-5 HE 44 3) 24 547-5 28 475-6 28 440"0 25 30-85 || 25 537-8 30 23-48 || 30 475-5 , 26 520-6 32 477-5 32 4 / 1-4 PAT 500-2 27 477-0 33 479-8 33 47 28 487-3 28 473-5 35 18-05 || 35 483-9 29 469-6 oH 487-8 37 30 46-35 || 30 450-9 38 31 448-7 40 15-76 || 42 488-9 43 32 461-2 32 409-0 45 14-76 || 47 493-4 48 33 465-3 33 419-2 50 16-50 || 52 484.0 53 BIFILAR. k=0:0001248. BaLANcE. £=0:000015 approximately. BIFILAR THERMOMETER, “ n §48°7. mayen, f 4871. 47°°3 BALANCE rence et eu toe {29°65 52 13%, {49223 5° 14%, 1 492.9" April 54, See notes on the Aurora, p. 61. EXTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 5—6. 1843. 59 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. ee Min.) Reading || Min-| Reading | Min.) Reading Geen Min.| Reading ||Min.| Reading || Min.| Reading Co) Reduced. of Cor- || of Cor- of Redueed: of Cor- of Cor- Obs. Obs.} rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. a ade he m. ° , m. Se. Div. m. Mice. Div. da. hs m. ° 4 m. Se. Div. m. Mic. Div. r. 5 14 54 494.2 Apr. 6 2 || 10 | 25 39-72] 12 541-0 13 755:3 55 | 25 15-36) 55 500-5 15 40-03 || 17 539-6 18 772°1 56 501-5 . 20 38-35 || 22 539-1 23 778-0 57 501-9 57 486-7 30 39-29 || 32 543-5 33 793-4 58 503-4 58 488-3 35 40-70 || 37 551-7 38 804-9 yr. 515 0 20-43 || O 499-4 40 41-14] 42 549-5 43 823-5 2 499-9 2 505-2 45 38-53 || 47 556-9 || 48 825-9 3 509-1 50 39-90 || 52 556-5 53 825-1] 5 18-48 || 7 497-6 8 528-4 55 42-19|| 57 553-0 58 825-4 | 10 16-97 || 12 506-3 13 539-8 | Apr. 6 3 0 43-10 2 545-7 3 827-4 14 508-7 5 41-24 7 545-4 8 836-7 15 16-57 || 17 509-2 18 544-5 10 39-96 || 12 549-6 13 835-9 20 17-34 || 22 511-0 || 23 554-4 15 37:89 || 17 555-6 18 834:3 25 17-41 || 27 514-2 28 564-6 20 38-95 || 22 554-3 23 829-7 30 16-73 || 32 518-2 33 570-6 25 40-17 || 27 553-5 28 824-7 35 16-97 || 37 520-7 38 578-2 30 41-24]| 32 551-1 33 820-2 40 17-25 || 42 521-0 || 43 585-2 35 39-83 || 37 548-1 38 821-1 45 17-61 || 47 516-8 48 590-5 40 40-03 || 42 545-7 43 820-3 50 16-24 || 52 516-8 53 591-9 45 40-20 || 47 543-0 48 819-9 55 15-19 || 57 517-0 58 591-2 50 40-48 || 52 538-0 53 817-5 m 5 16 0 16-03 2 513:8 3 594-0 55 39-84 || 57 546-5 58 810-4 5 14-92 7 514-0 8 593-9 | Apr. 6 4 0 40-91 2 555-1 3 804-9 10 14-48 || 12 515-3 13 593-6 5 41-47 a 562-0 8 802-0 15 15-39 || 17 514-4 18 589-2 10 41-69 || 12 554-8 13 807-2 20 14.97 || 22 509-9 || 23 586-9 15 40:24) 17 | 548-0 || 18] 808-5 25 14-85 || 27 508-4 28 579-3 20 39-43 || 22 558-4 || 23 806-7 30 14-08 || 32 510-8 33 574:5 25 38-69 35 13-91 || 37 511-5 38 S/o) pie G! Us 0 39-39]; 2 543.8 3 804-8 40 14-18 || 42 510-0 || 43 970:9 | Apr) 6) 16 0 32-69 2 543-4 3 803-3 45 14-51 || 47 510-3 48 567-5 10 31-38 || 12 538-6 13 802-7 50 14-82 || 52 509-4. 53 564:0 | Apr. 6 8 0 26-35 2 540:3 3 726-9 55 14-89 || 57 508-2 58 564-6 | Apr. 6 10 5 8-60 7 521-8 8 735-4 im 5 17 0 15:09} 2 505-0 3 564-0 10 6-05 || 12 522-1 13 740:3 5 14.921 7] 504-3 8 | 562-9 15 8-21] 17 | 507-3 | 18 | 753-1 10 14-11) 12 506-9 13 562-9 20 4-52 || 22 517-0 || 23 748-1 15 14-20] 17 508-9 18 562:3 25 6:42 || 27 521-9 28 746-9 20 14-06 || 22 510-7 || 23 566-5 30 6:05 || 32 528-3 33 744-4 40 13-95 || 42 513-8 || 43 561-6 35 8-41 || 37 530-6 38 741-1 . 9 18 0 14.23 2; 515-4 3 566-9 40 12-33 || 42 531-0 || 43 744-9 mp 19 | 55 24-00 || 57 517-9 58 565-0 45 14-92 || 47 531-1 48 741-3 ao 20 0 23-63 2 519-2 3 563-5 50 14:62 || 52 536-5 53 724-9 ao 21 | 50 30-25 || 52 505-0 53 628-4 55 15-32 || 57 515-0 58 706-5 55 29-14]) 57 503-7 58 632-0 | Apr. 6 11 0 15-09 2 540-7 3 699-3 me Oo 22 0 28-64|| 2 504-6 3 633-5 5 16:43 i 534-5 8 690-7 vf 508-4 8 638-1 10 16-94}} 12 534-9 13 671-6 10 29-71 || 12 508-6 13 643-9 15 17-62 || 17 534-3 18 673-6 15 31-09 20 18-66 || 22 531-2 23 666-0 30 35-06 || 32 505-5 33 653-3 25 18-84 || 27 528-7 28 655-9 mo) 23 5 36-88 7 517-9 8 665-9 30 18-43 || 32 525-9 ao 648-4 35 17-05 || 37 523-6 38 641-9 a6 60 0 | 25 34-82 2 521-1 3 701-8 40 15-90 || 42 520-2 43 635-8 I. 6 1 0 39-44 2 532-8 3 695-6 45 15-02 || 47 518-7 58 626-9 i} 30 38-87 || 32 529-7 33 723-0 50 14-36 || 52 517-0 53 615-4 ma. 6 2 0 41-98|| 2 533-5 3 746-1 55 14-11 || 57 508-7 58 606-3 ) 5 38:96 7 536-2 | 8 754-4 | Apr. 6 12 0 14-28 2 504-5 3 607-0 ' BIFILAR. k=0:0001248. BALANCE. k=0:000015 approximately. IFILAR THERMOMETER, | April 5¢ 15%, { Oe 5a 16%, { $7093 5a 173, | pegs 62 1h, foe 64 5h, ee Ga 19, \aave ‘ | ANCE THERMOMETER, April 54. See notes on the Aurora, p. 61. 60 EXTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 6—I11. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. base ty Bs Reading Min.) Reading | Min.) Reading eae Min Reading Min.| Reading fo) educode of Cor- of Cor- of Reduced, of Cor- Obs. Obs rected. || Obs.| rected. Obs. Obs. | rected. ‘ashe m. 2 f, m. Se. Div. m. Mie. Div. d. ii m. ° U m. Se. Diy. Apr. 6 12 5 | 25 13-55 if 503-5 8 610-6 Apr. 6 16 37 493-2 10 12-63 || 12 504-4 13 616-8 , 40 | 25 27-16|| 42 499-4 15 tates) | ates 513-3 18 629-8 45 28-54 || 47 504-4 20 10-48 || 22 521-5 23 636-8 52 509-9 25 11-15 || 27 527-4 28 640-5 55 28-00 || 57 515-6 30 11-89 || 32 529-5 3393 638-4 Apr. 6 17 0 27-43 2 519-9 35 12-07 || 37 531-4 38 635:3 5 26-79 7 521-1 40 12-16 || 42 529-1 43 633-2 25 22-62 || 27 529-5 45 12-50 || 47 523-5 48 633-0 30 23-70 || 32 524-5 50 13-10 || 52 523-2 53 631-4 45 21-58 || 47 527-1 55 13-61] 57 521-0 58 629-1 : 55 21-86 || 57 527-0 Apr. 6 13 0 14-51 2 518-5 3 627-8 Apr. 6 18 0 21-68 2 527-6 20 14-72 || 22 512-4 23 606-9 Apr. 6 19 | 10 22-05 || 12 529-2 745) 14-49 || 27 510-7 28 598-6 Apr. 6 20 0 21-91 2 530-1 30 14-16 || 32 509-4 33 592-7 a SS 35 14:31] 37 508-3 38 587-8 Apr. iG 0 | 25 20-47 2 538-8 40 14-16 || 42 503-2 43 581-0 5 20-70 re 549-0 45 14-23 || 47 495-8 48 568-9 10 22-45) 12 543-8 50 16-21 || 52 483-5 53 549-1 15 23-29 || 17 546-4 55 22-09 || 57 460-1 58 519-7 Apr. 7) 3 0 19-10 2 538-7 Apr. 6 14 0 30-89 2 452-1 3 467-4 10 11-53 || 12 555-4 5 35-86 i 424-9 8 362-9 15 3-58 || 17 576-2 10 41-22) 12 422-3 13 290-9 20 7-83 || 22 586-4 14 442.9 25 12-74 || 27 576-4 15 42-21 || 16 429.2 30 14-87 || 32 570-5 17 420-4 18 273-2 215) 18-48 || 37 558-2 19 434-4 40 19-33 || 42 548-8 20 38-95 21 294-3 45 20-41 || 47 543-7 22 449.2 23 312-7 50 20°74 || 52 537-3 29 511-7 28 351-3 55 20-67 || 57 532-5 30 25-93 || 31 514-9 Apr. Pies 8) 0 19-09 2 526-7 32 515-9 33 364-1 5 16-91 7; 527-2 34 517-0 10 14-48 |} 12 527-8 35 27-02 || 37 520-2 38 364-1 15 12-48] 17 532:3 40 27-31 || 42 524-8 43 371-6 20 12-16 || 22 534-0 45 27-70 || 47 532-5 48 383-5 25 12-74 || 27 532-1 50 29-06 || 52 524-6 53} 393-8 30 12-70 || 32 530-1 55 28-37 || 57 519-5 58 404.2 50 15-22 || 52 536:5 Apr. 6 15 0 27-29 2 508-8 3 412-1 Apr. 7 10 0 18-73 2 536-4 i) 23-59 7 511-3 8 429-5 10 20-84 || 12 511-0 13 435-7 Apr. 7 18 0 | 25 23-90 2 544:5 15 18-15] 17 508-6 18 446-5 15 24-80] 17 538-6 20 15-39 || 22 505°8 23 454-5 == |e 25 12-09 || 27 508-7 28 467-4 Apr. 8 4 0 | 25 29.24 2 542-9 30 10-48 || 32 510-9 33 478-6 Apr. S 5 || 50 15-76 || 57 557-9 30 10-21 || 37 509-0 38 491-6 | Apr. 8 6 0 16-62 2 561-0 40 10-41 || 42 510-0 43 502-6 10 17-20 || 12 559-5 45 11-12 |) 47 510-4 48 509-6 25 18-80 || 27 546-0 50 12-16 || 52 507-0 53 510-3 30 18-55 || 32 546:5 Apr. 6 16 0 11-98 2 510-7 3 520-5 35 19-83 10 15-66 || 12. | 502-2 13 531-1 “Apr. Sai 0 22-58 2 541-1 15 18-01} 17 496-6 18 537-1 Api on 1S 0 20-67 2 543-2 20 19-80 || 22 492.9 23 542-8 == | 25 22-29 || 27 492-5 28 546-7 Apr. Hs} 0 | 25 16-10 2 527-4 30 24.77 || 32 488-2 33 546-5 10 12-87 || 12 533-2 BiFinarR. k=0:0001248. BaLance. k=0-000015 approximately. BIFILAR THERMOMETER, % 49° 48°°7 48°-2 47°8 47°-2 475 BALANCE ee eee pete Na {aera ere { 49.53 6% 15%, { ag?.g3 6° 16%, (aaa Gage { ag.g3 7° 10h, { 47°0 April 74, See notes on the Aurora, p. 61. Bence st area ExtTrRA OBSERVATIONS OF MAGNETOMETERS, MArcH 29—Apnrit 7. 1843. 61 NOTES ON THE AURORA BOREALIS. | ide) hh. [arch 29 An Auroral light was seen about 9" to NNW., assuming the form of a segment of a circle, which became rather bright about 9° 50™, the light being homogeneous; at 10" 50™ the light was more spotted, but no pencils were visible. At 10" 25™ a meteoric light was seen, at first rather faint, proceeding from a point 1° to the south of Zeta Orionis (which was then just seen to about WSW. above the surrounding trees), passing between Castor and Pollux, and lost in a nebula in the back of Leo Minor. It became gradually brighter till about 105 35™, when its brightness perhaps equalled the most vivid pencils of an aurora, and gradually diminished in intensity and length till altogether lost about 10" 55™. The breadth at Orion was about 1°, this being the brightest portion of the meteor, but increasing gradually upwards, filling the space between Castor and Pollux; the greatest length seen might be about 100.° There was no appearance of corruscations. This meteor, undoubtedly connected with the aurora, was singular in every way, whether we regard its form, position, isolation, or duration. The Aurora had disappeared at 12%. pil 5 9 30. Aurora, altitude about 35° or 40°; streamers and corruscations, brightest to N. by E. 9 40. Bright auroral arch stretches from W. to NE., altitude 30°, sending streamers downwards to N. 10 15. Splendid aurora, originally with a double arch, the greatest having an altitude of 80°, the other of 60°, spanning 150° of horizon. An auroral pencil seen frequently in the same position as that observed on March 29, but never having the same duration. The aurora is brightest to NE. by E., the E. extremity of the arch, although the moon being near that point renders it less obvious. A portion to the E., which is brightest, branches off in a cycloidal form. The arch is sometimes triple, the lowest being 10° altitude, with pencils of aurora between. 10 20. Arches more broken, and sending pencils up to the zenith. Arches broken into pencils, vivid from W., and directed a little to the 8. of the zenith. 10 22. Arch altogether irregular to E. as if broken into small arches, with a bright mass to NNW. and NW., extending to the W. extremity of the arch, but broken at the N.; the dark space below having pencils occasionally. 10 25. Pencils to W., very bright ; arch strangely irregular, the light space being about 15° broad, and generally cycloidal at the terminations on the horizon. A long pencil seen frequently to W., as at 15™. 11 11. The arch now spans 130° of horizon, is 30° altitude, and 5° broad, with broad brushes of light below ; the western extremity of the arch is bent inwards towards the north. 11 34. Arch only 10° altitude. 12 30. Arch spans 130°, 12° altitude, 6° or 7° broad, and the form is cycloidal : no pencils at present. 12 45, Again double arches, but close to each other ; occasionally pencils from the NE. extremity. The moon is below the arch to WNW., and has a corona the breadth of its own diameter; the sky is beautifully clear, the stars appearing very brilliant, and no clouds are to be seen. 13 0-5. Strong pencils from the E. extremity of the arch. A new arch commencing at NNW., is spring- ing up with the other; its altitude is 8°. The apex of the greater arch is about N. 5° W., and . the breadth is increasing from 3° to 10°—much flickering. 14 0. Auroral arch much broken—altogether diminished ; patch of cloud to NNW. oril 5 15 30. The sky became quickly covered with scud—the aurora gone. e 714 0. An aurora to N., in the form of portion of an arch, 10° broad, reaching from W. to NNW.— flickering, but no pencils. 16 0. Faint auroral mass of light, 8° high and broad, variable in brightness, flickering. 16 35. Auroral light still flickering to NNW.—strong twilight. MAG. AND MET. oss. 1843. Q EXTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 11—May 6. 1843. 62 DECLINATION. BIFILAR. BALANCE. Ps nea a Min.| Readin g Min.| Reading || Min.| Reading of | Reduced. | °f Cor- of Core Obs. Obs rected. ||Obs.| rected. d. h m. +) U m. Se. Div. m. Apr. Tie SS) toe Zoel2-o Gi 17 534-3 18 30 15:30 || 32 535-9 33 Apr. 11. 9 || 35 21-64 |) 37 534-3 38 Apr. 11 10 0 22-45 2 535-4 3 Apr. 12) 2 0 | 25 29-88 D) 542-5 3 677-1 Apr. 12 3 | 45 28-23 || 47 561-6 48 680-7 50 28-47 Apr. 12 4 0 28:07 2 559-5 33 690-1 15 27-43 || 17 548-4 18 696-4 Apr: 12 5 || 45 30-05 || 47 560-6 48 740-2 50 30-25 || 52 555-1 53 748-5 55 33-54 || 57 533-3 58 767-1 Apr. 12 6 0 29-01 2 534-4 3 786-5 5 24-37 Fi 542-9 8 800-8 10 16-92 || 12 566-1 13 800-7 15 24:17 || 17 557-7 18 810-1 20 23-16 |) 29 551-5 23 817-9 25 21-91 || 97 547-1 28 820-4 30 21-86 || 32 543-5 33 821-6 35 22-45 || 37 543-9 38 826-5 40 21-81 |] 42 546-6 43 822-9 45 23:71 || 47 545-4 48 822-7 50 24-20 |) 52 547-0 53 819-2 55 26-17 || 57 542-4 58 823-9 Apr. 1) 7 0 24-99 2 541-7 3 825-4 5 22-33 a 537-8 8 822-1 10 22-47 | 12 540-6 13 817-3 15 22-85 | 17 542-9 18 811-5 90 22:56 || 92 540-4 23 810-1 25 21-62 || 97 541-4 28 807-4 30 22-45 || 392 542.2 33 807-8 35 23-32 || 37 538-6 38 808-3 40 23-36 || 42 533-5 43 807-6 45 21-37 || 47 537-4 48 802-3 50 21-73 || 52 545-7 || 53 797-6 55 23-17 || 57 539-3 58 801-7 Apr. 12 8 0 23-07 2 537-0 3 800-7 5 20-90 i 538-0 8 804-3 10 18-18 || 12 537-6 13 806-2 15 13-07] 17 | 538-5 | 18 | 799-6 20 13-34 || 99 538-8 23 792-3 25 15-14 || 97 539-7 28 787-1 30 15-64 || 39 534-4 || 33 784-4 35 15-34 || 37 535-4 38 778:8 40 ~ 15-83 || 492 537-2 43 769-9 45 16-78 || 47 534-5 48 766-0 50 17-41 || 52 525-4 53 770-0 55 14-15 || 57 528-8 58 769-5 Apr. 12 9 0 13-68 2 524.7 3 773-0 5 10-21 7 524-9 8 771-5 10 6-88 | 12 529-5 13 761-4 15 8-46 || 17 529-8 18 759-6 20 9-99 || 99 525-8 23 757-2 25 9-17 || 27 529-6 28 753-5 bo bo | DECLINATION. BIFILAR. Gottingen | Mean Mime, | Min Reading Min.| Reading | of Reduced. of Cor- | Obs. Obs rected. d. h. | m. f m. Se. Diy. Apr. 12 9 || 30 | 25 10-14|| 32 536-7 35 8:87 || 37 543-9 40 8-11 || 42 548-7 45 9-37 || 47 553-0 50 14-06 || 52 548-9 55 16:53 || 57 545-8 Apr. 1210 0 18-55 7 542-2 5 19-86 if 538-9 10 21-34 |) 12 535-0 15 DPN | ii i) 530-1 20 22-18 || 22 528-8 Apr. 13 18 ON 25 27a 2 527-1 Apr. 13 19 0 23-90 2 509-6 20 25-39 || 22 525-5 35 25-45 || 37 535-7 Apr. 13 20 || 0 22.50] 2| 539-3 Apr. 14 10 0 | 25 21-58 2 533-1 10 19-26 || 12 534:8 15 19-22 || 17 535:3 Apr. 15 6 || 0/| 25 17-51|| 2| 549-9 5 20-34 7 556-5 10 21-32 |} 12 552-7 Apr. 15: 38 0 23-30 2 542-0 Apr. 18 6 0 | 25 25-72 2 549-8 25 25-39 || 27 558-3 30 23-12) 32 560-4 35 24-38 || 37 561-5 50 20-03 || 52 547-4 55 16-97 || 57 545-3 Apr. Sid 0 15-72 2 544:3 5 10-58 7 544-2 ,10 11-80 |} 12 547-9 15 13-42 || 17 549-6 20 15s 2) ee 554-1 25 16-87 || 27 554-8 30 19-04 || 32 558-0 35 20-30 || 37 555-1 Apr. 18 8 0 20-57 2 554-1 May 6 6] 0| 25 24-96] 2| 516-6 May (eds! 0 | 25 21-64 2 518-0 May 6 9 || 40 | 24 58-08 || 42 437-2 45 | 24 50-67 || 47 443-8 50 | 24 51-59 || 52 440-0 55 | 24 57-941! 57 448-5 May 6 10 0} 25 4-10 2 422.7 5 | 25 6-70 7 392-7 10 | 25 6-91]| 12 416-6 15s 825) 7-63) lie 406-0 20 | 25 4-89]|| 21 374-7 22 370-8 BiFILAR. Before April 27, =0-0001248 ; after April 27, k=0:0001205. May 62. Quite cloudy throughout this disturbance, but the aurora was observed near London by Sir J. Herschel, and described by hi in the Atheneum, No. 811. BIFILAR THERMOMETER. BALANCE THERMOMETER. \ April 124 7}, { 42-6 42°02? 5°0 5) 18¢ 74, { 3a°-5 BALANCE. k=0:000015 approximately. — Pe: j d EXTRA OBSERVATIONS OF MAGNETOMETERS, May 6. 6ttingen ‘an Time. | DECLINATION. Min. of Obs. 55 57 10 May 64 104 45m, laed from 287° 44’ to 291° 45’; the subsequent readings have been reduced so as to be comparable with those previous to the turning of Reading Reduced. 25 16-97 25 25 25 24 25 24 25 25 25 33-27 33-17 BIFILAR. Reading Cor- rected. m. Se. Div. 370-7 344-6 Out of field. 155-8 168-5 185-2 184-1 199-1 222.3 234-3 234.4 221-8 236-6 228-2 221-8 240-8 1 252-2 263-0 3 248-2 4 228-7 5 203-5 6 204-3 7 8 215-1 235-1 9| 257-7 286-3 309-7 319-4 310-5 301-6 280-5 248-2 242-9 208-7 164.2 89-0 84-0 105-2 149-7 169-4 188-3 168-6 130-7 134.9 146.2 141-0 167-3 184-8 195-7 186-1 192-7 215-8 Min. Obs. BALANCE, Reading Cor- rected. of m. Mic. Div. 28 196-1 33 126-0 41 | — 28:5 48 101-5 52 220:5 54 | 250-0 56 274-5 58 317-0 1 454-0 3 487-0 i) £08-9 8 754-1 9} 803-0 11 860-1 13 903-9 16 | 864-1 18 940-2 19 | 973-4 21 930-3 22 | 911-0 23 853-0 26 782:8 28 755-0 32 657-0 36 569-0 BIFILAR. k=0:0001205. BIFILAR THERMOMETER. BALANCE THERMOMETER, Gottingen Mean Time. d. hy May 611 May 6 12 BALANCE. } May 64 12%, { 1843. 63 DECLINATION. BIFILAR. BALANCE. Min. : Min.| Readin Min,| Reading of ab is 4 of Cor- g ot Cor- Obs. Obs rected. || Obs.| rected. m. © m. Se. Div. m. Mie. Div. 37 | 25 34-85)| 37 226-6 ‘ 38 221-2 38 465-1 39 | 25 26-89 || 39 227-8 40 | 25 21-78} 40 222-6 41 212-4 41 341-1 42 216-9 42 311-0 43 226-2 43 291-7 44 | 25 11-82)| 44 250-1 45 | 25 9-05] 45 268-8 46 260-0 47 256-0 48 241-2 48 276-1 : 49 246-8 50 | 25 7-731) 50 256-0 51 342-0 52 271:5 53 294-0 53 288-0 54 310-5 54 322-0 55 | 24 43-10|| 55 342-4 56 | 24 42-43 || 56 348-1 a7 331-9 By7/ 417-0 58 346-9 58 427-5 59 | 24 32-97 || 59 348-9 0 | 24 24-67 0 364-2 1 | 24 20-54 1 370-2 2 | 24 18-94 2 354-6 3 343-9 3 459-6 4 | 24 11-29 4 322-1 5 | 24 4-92 5 303-7 6 299-5 6 480-7 7 | 23 58-05 ti 296-2 8 318-2 8 494-0 9 | 23 52-13 9 333-9 10 | 23 51-71]| 10 335-7 11 | 23 52-64|| 11 334-1 11 471-7 12 346-4 13 370-7 13 375-0 14 | 24 2-39)| 14 372-6 15 | 24 6-42] 15 364-0 16 373-2 16 275-0 17 | 24 14-63] 17 383-0 18 372-1 18 233-7 19 | 24 21-24]) 19 363-8 20 | 24 27-36] 20 357-1 21 201-2 22 374.4 23 376-4 23 236-0 24 | 24 31-60] 24 379-6 25 | 24 29-38 || 25 389-0 26 398-3 26 259-0 27 406-2 28 420-7 28 260-5 29 | 24 20-94} 29 424.2 30 | 24 20-87 || 30 417-9 31 409-2 31 222-0 32 | 24 26-09 || 32 409-9 33 408-2 33 181-5 5 2°4 54°:0° k=0°000015 approximately. The scale of the Bifilar Magnetometer having gone beyond the field of the reading telescope, the torsion circle was torsion circle.—(See Introduction.) 64 ExTRA OBSERVATIONS OF MAGNETOMETERS, May 6—Junz 7. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE enge? tin.) ending |Min.| Reading |Min.| Reading | yoan time. | ™Mi-) Reading || Min.| Reading | Min.| Read Of iredueceae of Cor- of Cor- Of ala anced. of Cor- of or Obs. Obs. | rected. || Obs.| rected. Obs. Obs.| rected. || Obs. ay his) aaa? m. Se. Diy. m. | Mic. Div. a. oh. m OO beg m. Se. Diy. m. | Mic.I May °6 12 | 34 | 24 33-35) 34 400-4 May 7 14 0 | 25 13-84 35 | 24 36-31 ]) 35 401-2 5 13-88 7 462-7 8 503 36 411-3 ae = 37 418-7 May 10 2 0 | 25 30-16 ey 514-7 3 664 38 | 412-8 || 38 125-0 42 | 478-5 | 43 | 67% 39 | 24 46-29] 39 410-8 May 10 4 0 26-13 2 518-1 3 696 40 | 24 47-92|| 40 409-4 May 10 6 0 17-69 2 531-2 3 705 41 411-5 41 123-2 15 16-68 || 17 535-6 18 707 42 | 24 49.89) 42 416-0 20 16-53 || 22 546-0 23 70 43 | 421-8 || 43 120-0 30 19-29 || 32 | 528-2 | 33 | 7H 44 | 24 55-81] 44 420.4 40 20-43 || 42 521-1 43 75 45 | 24 57-89] 45 429.9 45 23-77 || 47 pb lit-2 46 434-8 46 150-5 | May 10 8 0 23-48 2 512-0 3 70! 47 | 441-3 Set ea 4 48 | 446.7 || 48 175-0 | May 15 8 O | 25 23-91] 2) 523-9 3 | 70! 49 | 25 7-65] 49 449.2 10 533-7 50 | 25 10:09|| 50 | 447.9 25 22-77 || 27 | 516-0 || 28 | 72% ol 447-9 || 51 207-1 30 22-58 || 32 | 509-8 | 33 | 74 52 | 447-5 40 21-79] 42 | 512-7 | 43 | 78 53 449.9 53 935-7 45 22-36 || 47 507-1 48 80: 541 448.5 55 19-22] 57 | 502-2 | 58 | 84 55 | 25 14.48]| 55 | 448.7 May:15 9 |) 0 17-61]| 2] 501-7 3] 84 56 | 446.7 5 16-33 || 7 | 499-0 8 | 84 57 | 445.5 15 13-71|| 17 | 494.2 | 18 | 8 58 441-4 58 276-3 20 12-13 || 22 496-0 23 8h 59 441-0 30 16-73 || 32 495-0 33 785 May 613] 0| 25 981] 0] 438.0 45 22-32 47 | 497-3 || 48 | 76 ie | piss. 1| 330-0 | May 15 10 0 22-58 || 2 | 497-2 3) A asa 0937) 3699. 4. —— 7 5 | 24 59.69 6 388-5 | May 29 18 0 | 25 28-67]| 2 | 509-6 3 | 6H 7 | 94 58.25|| 7 470-7 8 402-0 30 23-66 || 32 507-2 || 33 61 91 480-0 May 29 19 0 19-89 10 | 24 58-01] 10 | 484.8 May 29 20 0 24-53 || 2] 493.3 3 | 64 1l 488.4 11 414-6 10 23-39 || 12 491-0 13 64 Pai) 4Gb-1- 1 2" | 42006 a ase ee er 15 | 25 2.33/15 | 491-7 | 16 | 495-6_| Jume 2 20 0 | 25 15-79] 2| 493-8 3 | 6a 20 | 25 9.47] 20 | 489.4 || 93 | 474.1 | Jume 2 21 || 15 28-14] 17 | 448-2 | 18 | 668 94 487-8 30 30-74 || 32 479-9 33) 65 25 | 25 12-50] 25 | 487-0 | 26 | 509-6 35 30-82|| 37 | 480-5 | 38 | 64 ——— June 2 22 0 34-85 2 491-8 3 629. | May 7 10 | 37 | 25 32-31] 38 | 463-5 || 39 | 586-0 10 34-61|| 12 | 493-8 | 13 | 62 40 30-45 || 41 | 460-0 | 42 | 580-0 30 33-42| 32 | 489-0 | 33 | 62 May 7 12 58 531-7 40 31-66 || 42 | 486-5 || 43 | 688 i May 7 13 0 19.96] 2) 452.7 3 | 522.6 | June 2 23 0 30-05 ||} 2 | 491-4 3 | 64 | 5 19-39] 7 | 458-0 || 8 | 520-2 - 10 19-73 12 | 454.1 || 13 | 519-6 | June 7 10] 0 | 25 32.35] 2] 510-1 | 3 15 19-15] 17 | 447-8 10 28-23|| 12 | 515-9 || 13 20 17-34|| 22 | 454-5 || 23 | 514-3 15 27-56] 17 | 521-8 | 18 25 15-47| 27 | 461-6 | 28 | 508-6 20 27-87 || 22 | 524-7 || 23 30 16-60 || 32 | 461-5 | 33 | 512-1 25 28-10 || 27 | 519-2 | 28 35 14-70 || 37 | 459-3 || 38 | 501-2 30 26-89 || 32 | 513-2 | 33 40 14-42|| 42 | 457-4 || 43 | 499-5 40 20-84 || 42 | 525-5 || 43 45 13-61] 47 | 459-1 | 48 | 496-9 45 20-48 || 47 | 512-2 || 48 50 14-:31|| 52 | 460-2 || 53 | 496-2 50 19-93] 52 | 506-0 || 53 15-09 460-1 18-68 499-5 BIFILAR. k=0-0001205, BALANCE. k=0:000015 approximately. BIFILAR THERMOMETER. 51°-2 51°-0 50°9 49°°7 BALANCE THERMOMETER. } Maye ilels {pies ge { plas { ome { S96 jae May 6418: 5m, The torsion circle was turned back from 291° 45’ to 287° 41’; the readings till 13 25™ have been corrected by +?! Sc. div., in order to make them comparable with those before 104 30™. Extra OBSERVATIONS OF MAGNETOMETERS, JUNE 7—JULY 24. 1843. 5 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE, rion, Min. Reading Min.| Reading || Min Bae See ty ays Reading ma ees Min.| Reading of Reduced. of Cor- of or fo) Reduced! (0) or of Cor- (0) Obs.| rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. 4 a ae m./| Sc.Diy. || m. | Mic. Div. Gye yh sere, | ONY m. Se. Div. m. | Mie.Div. fe 7 11 0 | 25 15-99| 21 4968 3 1 7 | 45 | 25 19-20] 47 | 542.0 | 48 | 678-1 5 14-:01|| 7 | 493-9 8 50 22-67 || 52 | 538-7 || 53 | 681-6 10 13-03 || 12 | 495-0 || 13 55 25-16 || 57 529-5 || 58 680-7 15 14-33|| 17 | 490-8 || 18 (os 0 25-48 || 2 | 520-5 3 | 681-4 20 16-24. || 22 | 492-5 || 23 5 25:78 || 7 | 517-5 8 | 679-9 25 18-01] 27 | 492-1 | 28 10 25-51], 12 | 516-1 30 18:86] 32 | 490-9 || 33 20 24-75 || 22 | 518-0 || 23 674-4 35 19-22|| 37 | 490-1 || 38 30 26-62 || 32 | 509-9 || 33 | 676-8 40 19-76 || 42 | 490-7 || 43 35 27-07 || 37 | 503-3 || 88 | 679-5 45 18-57 || 47 | 490-8 || 48 40 26-13) 42 | 502-5 || 43 | 678-1 50 17-38 | 52 | 490-8 | 53 45 25-3447 | 504-4 55 17:17 || 57 | 489-6 || 58 1 10 0 25:90) 2 506-6 3 669-6 ne 7 12 0 16-40) 2] 483-2 3 eee 5 15-81] 7 | 481-9 4 8 0 | 25 26-15] 2| 521-1 3 | 668-0 10 14-62|| 12 | 483-9 | 13 50 13-81 || 52 | 530-3 | 53 | 668-6 15 14:06 17 | 488-5 || 18 99 15-46 | 57 | 533-1 | 58 , 20 14-43 || 22 | 491-6 || 23 4 9 0 17-94) 2 526-4 3 670-0 25 14-60 || 27 | 496-7 || 28 5 19:10|| 7 | 520-4 Syl Grilled 30 15-97 || 32 | 499-3 || 33 10 19-46] 12 | 516-7 | 13 | 670-5 35 17-20 15 19-91] 17 | 514-5 | 18 % =m 718\) oO 21-95|| 2| 4846 | 3 20 21-10] 22 | 514-5 | 23 s 30 25-43 || 32 485-3 || 33 636-2 30 23-24 || 32 512-3 | 33 3 fe 7 20 0 25:92|| 2] 489-1 3| 642-6 | July 4 10 0 25-86 || -2 | 512-5 3 | 667-4 1e 9 20 0 | 25 19-54] 2] 518-7 3 | 655-8 | July 24 6 0 | 25 25-32] 2) 567-3 3 | 621-0 10 20-25 || 12 | 508-2 | 13 | 658-3 10 22-25|| 12 | 540.9 | 13 | 635.2 5 90-54.|| 17 507-8 || 18 657-2 15 22-63 || 17 541-1 18 637-1 20 21-02) 22 | 505-8 | 23 | 655-6 20 22-69 || 22 | 544-6 | 23 Bs ie 9 22 0 24:06 || 2 | 497-2 3 | 657-5 25 23-14 || 27 | 539-1 |} 28 | 641-5 30 22-97 || 32 | 534-5 | 33 | 644-6 ell 22 0 | 25 25-19} 2| 477-4 3 | 663-7 35 22-11] 37 | 527-4 | 38 | 646-8 fll 23 5 29-48 || 7 | 467-5 8 | 673-9 40 22-62|| 42 | 529-2 | 43 | 647-2 e12 0 0 27-83 || 2 | 492-2 3 | 663-8 45 22-58 || 47 | 536-3 || 48 3 es 50 22-38 || 52 | 546-7 e113 6 0 | 25 24-60) 2) 492-5 3 | 731-0 53 | 538-8 30 22.67 || 32 | 539-2 | 33 | 712-9 | July 24 7 0 23-53 || 2 | 522-6 3 | 656-4 35 94.65|| 37 | 534-2 || 38 | 710-6 5 24.27) 7 | 518-7 8 | 659-6 40 25-21] 42 | 530-3 | 43 | 709-9 10 24-67 || 12 | 521-0 || 13 " 45 25-73 || 47 |. 523-9 || 48 | 710-3 15 25-01] 17 | 524-7 50 26-62|| 52 | 516-8 || 53 | 710-9 22 | 516-0 | 23 | 672-6 55 26-10 | 57 511-2 58 709-1 25 25-95 || 27 525-5 28 670-4 213 7 (0) 26:08 |} 2] 512-6 3 | 708-0 30 25-14]| 32 | 523-8 || 33 | 672-6 mis 68 0 26-62|| 2] 510-4 3 | 695-9 35 25-07 || 37 | 525-3 || 38 | 675-8 40 24-67|| 42 | 533-8 | 43 ig e 30 18 0 | 25 25-14] 2) 488-8 3 | 582-2 45 24-67 || 47 | 528-1 || 48 | 675-6 30 23-26 || 32 | 494-4 || 33 | 600-5 50 24-58 || 52 | 523-8 | 53 | 679-5 e 30 19 0 24-55 2 491-5 3 612-3 | July 24 8 0 22-99 2 524-7 3 685-1 30 19-22 || 32 495-9 39 618-3 | July 24 9 5) 18-43 a 511-5 8 710-9 30 20 0 16-40) 2 | 484-5 3 | 636-9 10 20:37|| 12 | 506-7 | 13 | 709-1 30 21 17 | 475-6 || 18 | 657-3 15 20-28 || 17 | 507-2 | 18 | 711-8 20 19-15 20 19-13 || 22 | 503-2 || 23 | 694-9 25 19-81 || 27 | 483-9 | 28 | 652-1 25 19-09 | 27 | 494-2 || 28 | ‘677-4 30 22 0) 20:92) 2| 481-4 3 | 647-6 30 17:88 | 32 | 499-3 | 33 | 654-2 35 17-47 || 37 495:0 | 38 659-0 my 16 0 | 25 28-64) 2) 517-8 3 | 666-5 40 12-74 || 42 | 474-8 || 43 | 631-7 ' Birinar. k=0-0001205. BALANCE. k=0:000015 approximately. ; D I aR. oD By o, A A% °, ° Barance Tusuwonnnen. } Fue TW, { 55.93 TIM, | Soogs WM, [Sing Tuly 449%, { Grogs 240 on, {O08 AG. AND MET. OBS. 1843. 66 EXTRA OBSERVATIONS OF MAGNETOMETERS, JULY 24, 25. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. | BALANCE Gone a Min.| Reading || Min.| Reading “Min.| Reading oe _ | Min} Reading | Min-| Reading 'Min.] Read of Reduced: of Cor- of Cor- of Rednved. of Cor- | of Co Obs. Obs.| rected. || Obs.| rected. Obs. Obs.| rected. | Obs.| reete ||| (ie ete | el _ ee U E Cl J018 m. s b m. Se. Diy. m. Mic. Div. a dk m. io “ m. Se. Div. m. Mie] July 24° 49) 4baie2o a LeOi eA, 490-5 48 628:°3 July 25 2 | 50} 25 29-17) 52 572-1 | 53 922 50 | 24 53-72 |) 52 §24-3 53 634-7 9) 25-29 |) 57 584-8 58 93% do | 24 52-22] 57 528-7 58 599-6 July 95 3 0 33-07 2 598-8 || 3 942 July 24 10 || 0 | 24 55-11] 2] 507-9 3 | 593-6 5 41-04] 7] 580-8 | 8| 975 5 | 24 57-04 7 493-4 8 608-2 10 28-08 || 12 569-6 13 94. 10 | 24 56-95) 12 493-2 13 636-0 113, 21-91 | Vom 24: (52s 72ii wed 513-2 18 638-3 15 29-88 || 17 568-1 | 18 89] 20 | 24 57-22] 22 | 516-7 || 23 | 626-4 ile 33-54 | 25 | 25 6-67) 27 507-9 28 629-0 20 35-89 || 22 559-1 30 5-91 || 32 508-5 33 627-9 23 39-39 743} 898 35 6:77 || 37 508-2 38 622-5 24 37-37 i 50 14-43 || 52 514-9 53 606-7 25 34-73 | 27 547-6 28 90° 55 15-66 | 57 515-3 58 604-9 30 30-51 || 32 557-2 | 33 } 89: July 24 11 0 17-20 yy 518-0 3 601-1 35 35-69 || 37 560-6 | 38 899 5 20-25 Zi 511-2 8 603-3 40 32-27 || 42 586-3 | 43 898 15 22.29 || 17 516-4 18 604-8 45 46-94 || 47 558-7 48 92 46 48-53 July 24 22 0 | 25 31-03 2 444-1 3 674-9 50 35-73 || 52 543-1 ae 921 5 31-93 74 438-0 8 678-6 54 23-48 10 32-57 || 12 436-0 13 678-6 55 24-03 || 57 572-8 58 89 15 33-22 || 17 439-0 18 677-0 July 25 4 0 28-12}, 2 609-2 3 908 20 34-83] 22 | 441-5 | 23 | 675-8 4 41-41 25 34-28 || 27 442-4 28 674:°3 5 41-11 6 599-5 30 34-72 || 32 440-3 33 ” 7 597-1 | 8 94 35 33-47 || 37 438-5 38 ” 9 34-11 40 32-58 || 42 438-8 43 681-3 10 28-72 || 12 597-5 13 | 87 45 31-01 | 47 441-7 48 676-1 14 594-4 50 29-96 || 52 447-0 53 675:1 15 40-35 July 24 23 0 31-36 2 451-5 3 ” 16 45-95 || 17 574-8 18 83 15 31:56] 17 | 458-4 | 18 | 677-2 19 52-67 q 30 34-82 | 32 462-5 33 684-6 20 §1-29 || 21 550-4 35 35:56 || 37 463-0 38 688-0 22 552-7 23 92 50 34-66 || 52 473-2 53 696-0 24 38-96 ; July P45 (9) 0 33-15 2 467-2 33 702-6 25 35-49 || 26 566-1 25 34-52 || 27 475-0 28 722-2 27 567-7 28 July 2a) at 10 32-05 || 12 497-6 13 745°3 29 39-27 15 31-32 || 17 488-8 18 756-2 30 40-91 || 31 553-7 : 20 32-69 || 22 486-1 23 766-0 32 554-2 33 93 PAB) 35-89 || 27 495-8 28 771:8 34 31-56 30 38-69 || 32 494-0 33 776:9 30 29-60 || 36 562-2 ; 35 35-62 || 37 | 505-0 || 38 | 782-0 37 | 568-1 | 38] 91 40 33-96 || 42 520-3 43 787°2 39 32-62 45 34-92 || 47 519-4 48 790-0 40 33-76 || 41 594-9 | JONI wots65)| oe 519-6 53 795-1 42 599-8 43 91 55 36-90 || 57 518-7 58 803-6 44 33-74 ; July 25 92 0 35-59 2 517-5 3 814-0 45 33-60 | 46 627-7 ‘ By Hh 36-03 7 517-9 8 836-3 47 626-7 48 94 10 32-24 || 12 516-5 13 861-5 49 39-02 15 30-16 || 17 524-6 18 8533 50 39-63 || 51 602-8 20 30-37 || 22 536-7 23 848-2 52 606-6 ae 25 34-85 || 27 538-0 28 849-8 54 38-92 30 36-63 || 32 537-1 33 862-4 55 44-70 || 56 587-1 35 33-89 || 37 541-1 38 874:8 By/ 580-4 58 40 33-44 || 42 551-0 43 882:3 59 54-73 || 59 571-7 45 30-29 || 47 570-2 48 908-9 July 25) fo 0 56-04 0 566-9 BIFILAR. k=0-:0001205. BALANCE. k=0-000015 approximately. BrritaR THERMOMETER. \ July 244 118, { 083 254 1h, Ves ‘2. ona 3h, { 64-4 BALANCE THERMOMETER. 60°-7? 63°:9 ExtTrA OBSERVATIONS OF MAGNETOMETERS, JULY 25—Aveust 8. 1843. 67 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. BALANCE. Ge ene, || Min. Reading | Min.| Reading | Min.) Reading A aut | Mt Reading || Min.| Reading || Min.| Reading Reduded of Cor- of Cor- 0 Reducaden|moe Cor- of Cor- | Obs. * | Obs.| rected. Obs.| rected. Obs. Obs rected. Obs rected. d. h. m Oy m. Sc. Div. m. Mie. Div. do by m. 2 if m. Se. Div. m, Mie. Div. | 25 5 1| 562-1 | 1 | 9851-0°| July 25 10 | 55 | 25 13-51] 56 | 478.4 d 7) |) OEY ay57(0) |r 556-0 oN 484-7 || 58 602-7 3 552-2 3 877-4 59 488-0 4 50:05] 4 553-6 July 25 11 0 12-60) 2 486-6 3 649-3 5 48-33 5 554-4 4 481-9 6 556-3 6 | 891-3 5 11-77|| 7 | 480-8 8 671-6 7 46-76 Uf 557-0 9 483-5 8 558-4 8 895-6 10 10-55 |} 12 487-0 13 679-3 10 44.43 || 10 559-3 15 14-03 | 17 484-6 18 671-6 12 40-53|| 12 559-9 20 16-95 || 22 482-8 23 674-5 13 561-1 13 900-5 25 19-27 || 27 482-0 || 28 676-9 15 39-5211 15 568-4 18 905-7 40 20-68 || 42 479-0 || 43 667-8 20 37-15 || 22 568-3 93 904.8 50 21-88] 52 484.9 || 53 667-6 25 34-12 || 27 566-7 || 28 920-2 | July 25 18 0 15:03} 2 466-0 3 642-9 30 29-38 || 32 555-7 || 33 908-5 15-19 || 22 485-9 || 23 640-7 35 32.511 37 553-6 38 907-0 15-32 || 32 484-1 33 639-0 40 37-61 || 42 524-6 | 43 876-4 faethe Pan eee TC 43 523-8 29-08 |} 2 535-3 3 604.0 44 29-31] 44 524-3 27-22 || 292 524.9 || 23 615-6 45 28-35 || 45 526-6 21:08] 2 512-7 3 637-0 46 525:9 | 46 862-3 47 525-9 48 844-2 20-82 2) 466-7 3 625-5 50 30-40 || 52 512-9 || 53 817-5 26-19|| 37 474-5 38 619-3 55 31-73.) 57 512-8 || 58 811-3 31-43) 2 490-3 3 601-8 y 25 6 0 31:96]| 2 519-4 3 812-8 34-90] 48 508-0 || 49 608-0 5 30-74|| 7 520-8 8 812-7 29-38 || 22 522.2 || 23 663-8 15 25-58 || 17 530-6 18 798-9 31-36 | 47 512-4 || 48 660:1 20 98.27 || 22 530-4 93 784-6 29.42 2 512-9 3 682-0 25 30-42 | 27 526-5 || 28 789-1 32-78 || 2 519-3 3 685-9 40 22-38 || 42 520-7 || 43 784-9 21-24 |) 22 536-4 || 23 747-1 45 _ 19-63 | 47 510-0- |) 48 772-6 24-37) 32 518-4 || 33 776-5 50 20-34] 52 518-0 || 53 769-8 21-95 || 37 518-4 || 38 782-2 55 99.53|| 57 518-3 58 ley 40 19-26 || 42 518-7 43. 784-5 y 25 8 0 19-63 || 2 508-0 3 736-0 45 18:48 || 47 522-5 || 48 789-6 y 25 10 0 20-10] 2 474-3 3 663-7 50 15-83 || 52 516-0 |) 53 a 10 18-97 || 12 479-7 13 658-8 55 11-24 || 57 532-6 58 778-6 15 21-91 17 | 469-3 | 18| 643-1 | Aug. 4 6] 0 13-68] 2] 537-3 3B 07125 20 21-28] 21 463-5 5 17-15 7 532-2 8 767-0 22 460-2 || 23 826-6 10 19-37 || 12 528-6 13 759-8 25 20-07 || 26 462:3 15 22-02 || 17 $24.3 18 752-0 27 462-1 98 611-9 25 24.37 || 27 516-8 || 28 738-1 99 445-9 Aug. 4 8 0 21-24) Q 517-4 3 679-1 30 19-80) 31 448-2 = 32 442-1 33 562-3 | Aug. 8 18 OnS25) aie I 2 461-8 3 475-2 34 437-5 10 38-08 || 12 466-6 13 462-9 35 20-28 || 36 425-7 15 42-41 || 17 456-6 18 451-6 37 431-9 || 38 520-6 20 43-74|| 21 468-0 39 457-1 22 472-3 || 23 448-7 40 17-83 || 41 465-3 24 476-7 42 470-2 || 43 566-7 25 43-49 || 26 480-3 44 476-5 27 481-8 || 28 447-6 45 13-71 || 47 486-6 || 48 576-1 30 43-80] 31 487-8 49 476-3 32 490-5 33 442-0 50 13-44) 52 460-2 || 53 567-0 35 43-12|| 36 496-2 54 | 467-2 37 | 498-7 || 38 | 437-9 Birizar. k=0:0001205. BALANCE. k=0:000015 approximately. 64°°4 64°:2° BALANCE ee Cees BIE { ] ] ] : | BIFILAR THERMOMETER. : 68 ExtTRA OBSERVATIONS OF MAGNETOMETERS, AUGUST 8—SEPTEMBER 18. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION, BIFILAR. BALANC ie Min.| Reading |Min-| Reading | Min.| Reading ei sgh pire] Ea q |Min.| Reading | Min. oft ineanced: of Cor- of Cor- of | Reduced. || of ore of Obs. Obs. | rected. || Obs.| rected. Obs. Obs. | rected. || Obs. a; his m. e ih m. Se: Div. ™m. Mic. Diy. d;, “h. m. S , m. Sc. Div. m. Aug. 8 18 | 40 | 25 42-23] 42 503-7 || 43 427-6 | Sept. 1 2 3 | 25 31-22] 5 507-7 || +: 45 “39-20 || 46 508-6 24 31-00 || 22 517-9 47 508-6 | 48 421-5 25 500-0 || -- 50 37-77 || 52 511-3 || 53 426-7 46 32-42 |) 44 518-6 55 35-62 || 57 513-1 | 58 | 429-9 | Sept. 1 3 | 10 33-62 || 11 511-9 Aug. 8 19 0 33-71|| 2 512-5 3 436-1 35 28-97 || 33 493-6 5 32-95 || 7 512:8 8 | 445-5 35 490-9 oo 20 32-15 || 22 512-7 || 23 457-2 37 496-6 25 30-10 || 27 504-6 || 28 482-9 56 521-2 45 23-06 || 47 502-2 || 48 512-0 58 28-30 || 59 529-1 ‘. Aug. 8 20 0 19-49] 2] 498-1 3 537-5 | Sept. 1 4 0 27-78|| 2 525-1 . Aug. 8 21 |} 20 20-20|| 22 | 486-3 || 23 595-8 16 525-9 || + 25 20-21 || 27 483-5 |) 28 596-7 18 27-10 || 19 513-8 || « Aug. 8 22 0 21-95|| 2) 478-8 3 605-6 39 502-9 Tie 40 29-35 || 42 516-7 Aug. 22) 0 0 | 25 31-76] 2 498-8 3 663-3 4 530-1 Aug. 22 1 5 39-39 || 7 490-0 Sept. 1 5 is 29-20|| 8 532-4 10 37:03 | 12 | 477-7 13 675-3 2 506-3 15 36-38 || 17 483-6 || 18 673-0 30 23-01 || 29 513-2 20 38-11] 22 492.1 || 23 671-7 47 014-2 25 39-59 || 27 505-4 || 28 665-5 50 20-12 || 50 497-8 30 40-89 || 32 509-6 || 33 664-7 | Sept. 1 6 0 19:-42|| 2 491-8 35 36-63 || 37 481-4 || 38 675-3 8 495-9 40 35-67 || 42 | 497-8 || 43 665-1 9 17-12] 11 503-8 45 37-07 || 47 | 496-9 || 48 33 46 23-05 50 36-60 || 52 494-9 || 53 668-8 | Sept. 1 8 0 17-60|| 2 511-8 59 34-65 || 57 490-3 || 58 672-9 an ; Aug, 22 2 0 33-54|) 2 487-4 3 675-0 | Sept. 1 20 0 | 25 32-55]) 2 478-0 oo 20 33-98 || 22 530-0 || 23 7 15 31-72|| 17 | 489-6 2G 25 33-84 || 27 529-8 || 28 683-7 30 30-37 || 32 | 496.4 30 32-48 || 32 516-8 || 33 689-2 45 28-17 || 47 503-1 35 31-46 || 37 517-2 | 38 692-1 | Sept. 1 22 0 24-41 2 483-5 42 526-3 Sept. 2 0 0 26-83 || 2 485-6 45 32-87 || 47 532-3 || 48 % 57 28-44 || 56 492-8 50 33-78 || 52 536-6 || 53 an Sept. 2 1 | 18 28-35 || 18 497-6 57 524-3 38 505-6 Aug. 22 3 2 521-3 55 489-7 5 33-17) 7 024-1 8 705-2 | Sept. 2 2 0 28:05 || 2 492.4 17 514-6 11 500-0 40 33-51 || 42 533-1 43 708-3 14 510-1 45 31-50 || 47 512-0 || 48 715-6 28 507-0 50 31:07 |) 52 505-0 |) 53 720-4 31 497-6 57 | 495-2 48 505-1 Aug. 22 4 0 31-22] 2 504-7 3 718-9 | Sept. 2 3 || 10 27-37) 11 498-1 10 30-42 | 12 505-1 13 716-6 29 493-1 JN 2) 5) Il 115} 28-64 || 17 533-9 18 613-2 | Sept. 2 4 0 26:60) 2 503-8 39 27-33 || 37 523-6 || 38 628-5 21 517-6 Aug. 22 6 0 26:94] 2 519-0 3 731-3 | Sept. 2 5 || 19 22-42 || 20 499-2 38 513-1 Sept. 1 0 0 | 25 28-59] 2 504-7 |] vee | eeeeee Sept. 2 6 0 20-36 || 2 507-5 59 29-95 || 58.| 499-8 |] «++ | creese SSS Se Sept. 1 1 0 2 499-8 |] re | ceeeee Sept. 18 10 0 | 25 7-65)|| 2 519-0 3 21 30-73 || 22 505-5) lesen | semen 10 5:65 || 12 530-1 13 43 31-22) 42 SUB Sect sien 15, 4-28 || 17 539-5 18 Sept. 1 2] 0 31-89) 2] 514-3 |. | see 20 5-33 || 22 | 539-7 || 23 Birinar. k=0:0001205, BaLance. k=0:000015 approximately. BIFILAR THER oR. Ry 58°°7 BALANCE Tenewoueeee tt eee { 6025: waste { 58:3" Aug. 224, A faint Aurora observed for a short period this evening at Edinburgh. Sept. 1424, Observations made during experiments to determine the temperature correction of the Balance Magnet. Extra OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 18—OcrosER 26. 1843. 69 DECLINATION. BIFILAR. BALANCE, DECLINATION. BIFILAR. BALANCE. Hinges ee ‘in.| Reading |Min,| Reading be aig Min.| Reaaing | Min.| Reading |/Min.| Reading ODS irneduccd® of Cor- of Cor- of Reducnde of Cor- of Cor- Obs. Obs. | rected. ||Obs.} rected. Obs. Obs. | rected. ||Obs.| rected. i a a t m. Se. Div. m. Mic. Diy. idee skr m. S & m. Se. Div. m. Mie. Div. pt. 18 10°} 25 | 25 6-79 || 27 539-7 28 774-9 Oct. 4 23 5 | 25 32-87 7 471-9 8 769-0 30 9:89 | 32 538-0 313) 772-5 10 32-53 || 12 470-0 13 763-0 35 12-14 || 37 535-7 38 766-8 15 32-35 || 17 473-3 ||'18 781-5 40 11-64 || 42 533-2 43 760-7 20 31-46 || 22 480-1 23 798-4 45 11-28 || 47 527°3 48 753°1 25 32-27 || 27 480-5 28 798-7 50 10-88 || 52 521-3 53 748-2 30 32:10 }) 32 485-5 33 779-6 55 10-50 || 57 515-4 58 754-9 35 32-10 || 37 490-5 38 749-8 pt. 18 11 0 9.47 2 513-7 3 761-7 40 32-62 || 42 491-0 43 763-6 5 10-08 7 510-0 8 762-9 45 32-80 || 47 492.3 48 750-9 10 9-57 || 12 508-1 13 759-4 50 32-91 || 52 491-0 33 771-0 15 8-90 || 17 502-9 18 763-6 55 32-51 || 57 492.4 58 769:8 20 8-40 || 22 | 495-9 | 23 | 765-7 | Oct. 5 O 0 32:53 || 2| 493-6 3 | 770-2 25 8-97 || 27 492-8 28 769-3 Oct. 5 4 0 27-33 2 513-2 3 798-4 30 11-73 | 32 | 492.2 | 33 | 776-0 | Oct. 5 5 || 25 16:44|| 27 | 501-6 || 28 | 853-2 35 15-99 || 37 487-6 38 786-0 30 16-53 || 32 505-9 33 854-9 40 19-37 || 42 489.7 43 786-0 45 20-61 || 47 507-6 48 856-7 45 22-50 || 47 491-6 48 782-0 Oct. 5 6 0 25:31 2 505-2 3 849-6 50 23-27 || 52 493-5 53 774:3 Oct 5) ae "55 15-19 5 22-11 || 57 503-1 58 752-5 Oct, 548 0 11-05 2 507-4 3 802.9 t. 18 12 0 19-93 2 515-0 3 737-2 5 3-01 7 523-7 8 783-7 5 | . 20-90 7 523-3 8 726-1 10 2-74 || 12 535-9 13 771-4 10 23-16 || 12 520-4 13 721-3 15 6:97 || 17 537-0 18 763-6 15 Da salle 521-3 18 704-4 20 11-47 || 22 523-8 23 762-9 20 24-67 || 22 519-1 23 707-1 25 10-01 || 27 §24-1 28 752-5 25 26-22 || 27 518-0 28 708-5 30 11-32] 32 516-2 33 751-4 30 26-86 || 32 516-4 33 710-0 35 13-17 || 37 506-7 38 755-3 35 26-33 || 37 513-5 38 711-3 | Oct. 5 10 0 19-67 2 506-0 3 766-3 0 | 25 19-29 2 509-0 3 838-7 | Oct. 16 10 0 | 25 12-36 p2] 549-3 3 828.9 20 9-99 || 22 508-5 23 854-5 5 18-68 7 544-0 8 826-8 25 8:03 || 27 512-6 28 858-4 | 10 21-28 || 12 537-0 13 823-0 30 7:95 || 32 515:5 33 862-2 i lie 22-63 || 17 519-6 18 821-7 35 9-47 || 37 514-7 38 863-0 20 21-29 || 22 514-0 23 819-5 40 9-27 || 42 510-9 43 861-7 25 17-41 || 27 §21-2 28 815-4 45 8:53 | 47 510-0 48 860-1 30 15-88 || 32 527-3 33 810-4 50 7-56 || 52 513-9 53 850-5 35 17-18 || 37 525-0 38 810-4 55 6-47 || 57 516-3 58 852-8 40 17-76 || 42 §23:5 43 810-4 19 7 0 6-68 2 518-3 3 851-4 45 17-88 15 6:03 On| al | 20 7:02 || 22 520-7 23 848-3 Oct 17. 2 0 | 25 18-41 2 492-4 3 901-7 m9 «8 0 14-01 2 507-3 3 846-9 5 16-73 7 503-1 8 898-2 . 19 10 0 19-89 2 511-2 3 780-5 10 21-02) 12 505-2 13 900-6 10 23-36 || 12 501-3 13 774:8 15 20-40 | 17 506-0 18 901-6 20 20-20 || 22 515-6 23 762-0 20 21-24 || 22 505-8 23 900-2 25 18-99 || 27 517-9 28 755:5 25 22-32|| 27 506-4 28 899-8 30 15-00 || 32 521-6 33 757-6 55d 24.69 || 57 506-1 58 875-8 35 11-53 || 37 528-7 38 754.7 | Oct. 17 4 0 25-32 2 508-5 3 884-6 40 10-48 | 42 537-9 43 749-7 45 12-20 || 47 534:8 48 750-5 Oct. 26 4 0 | 25 22-99 2 500-8 3 879-6 50 14-03 | 52 530-8 53 751-2 10 17-78 || 12 502-1 13 893-0 55 15-77 || 57 526:3 58 754:3 15 16-38 || 17 504-5 18 897-7 al9 11 0 17-02), 2 520-8 3 757-4 | 20 14-11 | 22 510-8 O33} 897-6 2a 14-36 | 27 518-0 28 894-9 0 | 25 23-93 2 486-7 3 781-0 30 15-84 | 32 522-1 33 892-6 2 469-6 3 771-°8 Oct. 26 6 0 19-26 2 498-8 3 920-7 Birinar. k=0-0001205. BaLance. k=0-000013 approximately. Puunan Mmmawomeren: Y sept, ise ais, (629; ot am, {908; r9¢ an, (629. oct. ae ame, {589 Sept. 18¢ 10h 50™, A band of auroral light, about 10° altitude, seen among the clouds to NNW. Sept. 184 11» 45™. Auroral light still visible, but very faint. Sept. 18412 40m, The aurora has now almost entirely disappeared. Sept. 194105 0m, Lightish to NNW. Auroral light ? Sept. 194115 0m. All traces of auroral light have vanished, the sky nearly clear. MAG. AND MET. ozs. 18438, 70 ExtTRA OBSERVATIONS OF MAGNETOMETERS, OcTOBER 26—DECEMBER 8. 1843. DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR. emer st Min.| Reading | Min.| Reading || Min.| Reading ieee ae Min-| Reading |/Min.| Reading || Min. of eden: of Cor- of Cor- of Reduced. of Cor- of Obs. Obs.| rected. Obs.} rected. Obs. Obs.| rected. |) Obs. dhe m. ) fi m. Sc. Div. m. Mic. Div. ds hb m. e Me m. Se. Div. m. Oct. 26 6] 56) 25 5-63 Nov. 2 11 || 20 | 25 14-15 || 92 480-0 || 23 Oct. 26 7 0 9-89 2 531-9 3 876-7 25 15-14 || 27 476-9 28 5 16:03 " 524-5 8 873-9 30 13-08 || 32 504-0 33 10 18-84] 12 522-7 13 867-3 35 11-76 || 37 515-0 38 20 22-80 || 22 504-8 23 864-5 40 15-16 || 42 514-2 43 25 20-81 || 27 498-4 283 864-9 45 17-20 || 47 496-8 || 48 30 19-80 || 32 498-7 33 866-2 50 17-71 || 52 492-5 53 Bo, 19-24 || 37 499-3 38 868-4 55 16-53 || 57 491-1 58 40 18-45 || 42 502-5 43 867-5 | Nov. 2 12 0 14-46 2 491-0 3 Oct. 26 8 0 20-34 2 508-3 3 861-7 5 12-68 7 492-9 8 Oct. 26 9 | 55 0-67 || 57 505-2 58 835-4 Oct. 26 10 0 1-14 2 507-2 3 S34ea) 1 Noves 2).22 0 | 25 21-10 2 4938-0 3 5 2-25 i 506-4 8 835-5 15 22-25 || 17 496-8 18 10 3-68 || 12 505-0 13 836-3 | Nov. 2 23 0 24.94 2 495-0 3 15 4-93 || 17 505-0 18 835-2 | Nov. 3 0 0 26-45 2 493-5 3 20 5-94 || 22 508-7 23 833-0 | Nov. 3 1 0 27-61 2 503-6 a 25 6-89 || 27 507-2 28 830-7 | Nov. 3 2 0 25-51 2 503-7 3 30 7-53 || 32 509-8 33 - Nov. 3 6 0 21-28 2, 514-4 3 35 8-46 || 37 511-8 38 82676 Nowe, 3) 477.30 17-20 |) 32 508-0 40 9-32 || 42 511-6 43 g24-1 | Nov. 3 8 0 13-71 2 517-6 3 46 9:94 | 47 512-7 48 818-7 10 15-74 || 12 514-5 13 50 10-06 || 52 512-1 53 815-5 | Nov. 3 10 0 21-05 Z 510-2 3} | | | 10 20-84 Oct. 27 0 0 | 25 25-90 Be 493-9 3 01) SSS SSS SS SS eee aan Oct. 27 1 || 10 22-08 || 12 488-5 13 866-4 | Nov. 13 8 0 | 25 15-30 2 502-6 Octai27 2 0 24-17 2 515-1 3 857-8 10 10-57 || 12 497-9 im a | | 15 8-86 || 17 507-6 Oct. 30 10 0 | 25 17-76 2 507-3 3 854-1 20 10-76 || 22 504-3 10 19-10 }| 12 517-7 13 853-9 45 9-73 || 47 501-9 SS i———-_| Nov. 13 10 0 16-87 2 504-1 3 Oct. 31 6] O | 25 18-86] 2) 513-8 3 | 846-2. ,——— |, ——__||__ _—_— Oct. 31 7 || 55 12-00 || 57 525-3 58 822-8 | Nov. 16 10 O | 25 15-19 2 504-5 3 Oct. 31 8 0 12-27 2 525-2 3 823-0 15 16-53 ‘ 10 15-36 || 12 520-3 13 5 a | Le — 15 15-66 | 17 515-6 18 822-6 | Dec. 1 10 0 | 25 10-31 2 507-9 3 20 15-19 || 22 514-5 23 45 10 12-40 || 12 507-6 13 30 15-64 || 32 510-0 33 “5 25 13-95 || 27 508-4 || 28 Oct. 31 10) 0 17-88 || 2 | 509-3 3 | 8204-4) Poses |) eee. eee 10 16-06 || 12 510-6 13 833-5 | Dec. 6 8 0 | 25 19-37 2 511-8 3 eS ey Se S| | 8 506-7 Nov. 2 10 0 | 25 17-07 2 511-6 3 830-2 10 10-80 || 12 512-5 13 10 13-30] 12 505-3 13 833-1 15 10-09 || 17 515-5 18 15 12-67 || 17 504-7 18 830-3 20 10-75 || 22 516-6 23 20 8-84 || 22 502-8 23 831-8 25 11-98 || 27 515-6 28 25 6:37 || 27 499-8 28 830-3 30 14-11 |) 32 513-5 33 30 4-75 || 32 505-8 33 825-2 | Dec. 6 10 0 19-15 2) 502-2 3 35 2-98 || 37 513-8 38 819-7 | Dec. 6 11 || 25 11-22 || 27 513-1 28 40 4-22 || 42 516-9 43 816-5 30 11-76 45 5:78 || 47 514-6 48 811.9 | Dee. 6 12 || 20 15:05 50 6-30 || 52 510-4 53 806-3 ae 55 6-23 || 57 505-5 58 800-2 | Dec. 8 6 0 | 25 25-14] 2 510-6 £| 3 Nov. 2 11 0 6-27 2 502-5 3 793°5 10 25-27 || 12 504-8 13 5 7-42 ti 502-9 8 788:°3 15 24-58 || 17 504:8 18 10 10-77 || 12 494-7 13 788:8 20 24-80 || 22 502-4 23 15 13-00 || 17 481-1 18 790-8 25 23-39 || 27 501-1 28 BIFILAR. Before Nov. 104, =0-0001205 ; after Nov. 10¢, =0-0001300. BALANCE. Before Nov. 134, k=0-000013 approximately ; after Nov. 134, k=0:000014 approximately. 42°°3 49°°5 3 44-4 44°-9 42°] 42°°5 45°-0. 44°°5 BIFILAR THERMOMETER. d h dad h ri ad h BALANCE reas creme ee ee { ee { aula | i Determine Oct. 2649" 50™, Aurora in the form of a low arch, 8° high, stretching from NW to N. At10>0™it wasfainter. No aurora was visiblea Oct. 262 10 55™, Aurora imperceptible ; the north is partially covered with clouds. 4 Nov. 2410» 30™, Milky like to N.; perhaps auroral light, but doubtful on account of moonlight. } Noy. 1348. The Balance Magnetometer not in adjustment. An auroral light to N. like the reflection of a great fire as seen | thick mass of clouds. ExtTRA OBSERVATIONS OF MAGNETOMETERS, DEcEMBER 8—11. 1843. 71 DECLINATION. BIFILAR. BALANCE. DECLINATION. BIFILAR, BALANCE. ee Min.| Reading ||/Min.} Reading | Min.) Reading ieee a a Reading || Min.| Reading | Min.| Reading 3 to) Reduced: of Cor- of Cor- to) Reduced: of Cor- of Cor- Obs. Obs.} rected. || Obs.| rected. Obs. Obs.| rected. ||Obs.| rected. ad, h. m. ° ’ m. Se. Div. m. Mic. Div. im. Bie! Kd m. Se. Div. m. Mice. Div. ce. 8 6 | 30 | 25 22-05] 32 500-5 33 911-9 Dales LUO 7 503-7 8 788-0 35 21-88 || 37 502-3 38 916-0 10 12-27) 12 504-9 13 791-3 40 21-91 || 42 501-2 || 43 916-0 15 13-17 || 17 505-7 18 790-6 45 20-88 20 14-48 || 22 509-2 23 792-4 ec 8 8 0 17-88] 2 502-8 3 947.9 25 15-37 || 27 506-6 | 28 793-0 7 490-3 8 954.9 30 15-52 || 32 503-9 || 33 795-1 10 13-61] 12 | 493-1 13 946-7 35 15-56 || 37 503-3 || 38 797-1 15 12-43 || 17 502:1 18 931-0 40 16-38 || 42 500-4 || 43 801-0 20 15-12 || 22 500-6 || 23 923-0 45 16-91 || 47 500-4 || 48 803-3 25 12-90 || 27 500-8 || 28 928.0 50 17-47 || 52 503-5 | 53 805-8 30 11-98 || 32 496-1 33 927.0 55 17-88 || 57 504-1 58 806-3 35 6:57 || 37 501-7 || 38 902.8 0 17-20 |) 2 502-3 3 802-1 40 10-85 || 42 502-7 || 43 893-8 | || —— 45 15-79 || 47 501-4 || 48 883-8 OF 2522-72) \e 513-1 3 869-3 | 50 19-27 || 52 497-9 53 872-0 9 520-0 9 866-0 55 25-68 || 57 491-4 | 58 860-7 12 20-60 = 8 9 0 | 25 25:27]| 2 475-7 3 851-8 15 21-95 || 17 514-4 18 870-4 5 | 25 18-85 if 467-2 8 861-3 35 24-44 || 37 520-0 || 38 865-2 HORE 25 3225) 12 478-7 13 854-1 40 25-14 || 42 520-5 | 43 865-1 15 | 24 57-12)| 17 491-1 18 843-0 45 26-35 || 47 515-5 || 48 865-4 20 | 24 56-15|| 22 494-5 23 841-8 50 25-12 || 52 514-9 || 53 864-3 25 | 24 54-91 || 27 496-9 || 28 840-9 55 24.94 || 57 517-5 58 860-8 30 | 24 56-73 || 32 503-3 33 841-0 0 23-50 G, 517-3 3 859-5 35 | 24 59-22) 37 506-2 38 839-8 5 23-10 40 | 25 2-53)! 42 505:3 || 43 839-0 0 6:05 2 530-6 3 867-9 45 | 25 5-73) 47 499-0 || 48 840-8 5 7-11 7 529-0 8 865-0 50 | 25 7-26|| 52 493-5 53 844-5 10 8-51 | 12 529-8 13 860-0 55 | 25 7-62)! 57 492-5 58 847-0 15 10-48 || 17 527-4 18 857-8 8 10 0 | 25 8-23 2 494.4 3 851-2 20 12-43 || 22 526-6 23 855-7 5 | 25 10-34|| 7 496-8 8 851-5 25 13-89 || 27 525-1 28 852-3 10 | 25 13-14 || 12 498-5 13 853-1 30 15-41 || 32 525-4 33 848-5 —————_—_]|_ 0 19-34 || 2 510-6 3 852-5 ec 8 18 0 | 25 22-55 2 530-7 3 816-0 10 18-06 || 12 507-6 13 856-4 15 23-29 || 17 529.7 18 815-5 15 17:59 || 17 510-0 18 855-7 40 24-33 || 42 530-4 || 43 814-2 20 15-99 || 22 512-4 || 23 853-8 — 25 15-16 || 27 513-3 28 855-2 Gc 9 8 0| 25 9-84] 2 527-3 3 852-5 30 15-02 || 32 514-6 33 853-5 5 5 12:80] 7 533°3 8 847-3 35 15:10 || 37 515-4 || 38 853-1 10 14-40 || 12 536-2 13 839-6 40 13-89 || 42 516-5 || 43 849-2 15 13-93 || 17 529-6 18 842-5 45 12-45 || 47 517-1 48 845-5 20 10-52 || 22 521-4 || 23 841-6 50 10-58 || 52 515:3 53 847-3 25 8-20 || 27 528-8 | 28 836-7 55 11-05 || 57 518-4 || 58 844-8 30 7:48 || 32 534-8 ere 832-3 0 10-83} 2 516-1 3 845-5 35 10-25 | 37 533-8 38 833-8 5 11-35 7 514-5 8 845-0 40 12-60 || 42 528-4 || 43 836-4 10 13-10] 12 521-3 13 837-9 45 15-72 || 47 521-3 48 839-5 15 15-52 || 17 534-3 18 827-9 50 15-39 || 52 518-0 || 53 839-3 20 20-41 || 22 Bye taah |) 433 818-9 55 17-00 || 57 511-9 || 58 843-2 25 22-43 || 27 531-5 28 811-4 9 9 0 17-96 2 509-7 3 845-5 30 23-68 || 32 521-8 || 33 808-0 5 18-43 7 509-5 8 846-5 35 23-32 || 37 511-1 38 806-4 a 9 10 0 18-15 2 510-4 3 849-0 40 20-32 || 42 507-0 || 43 802-0 SSS | SS SS 45 16-28 || 47 512-7 || 48 794-2 . 10 12 | 50 | 25 11-87) 52 495-8 53 778-6 50 13-96 || 52 515-1 53 793-7 ) 55 10-58 || 57 500-2 58 781-9 55 14-95 || 57 518-8 58 791-3 D>. 10 13 0 10-41 2 503-7 3 783-0 | Dec. 11 12 0 16-01 2 525-4 3 788-7 BIFILAR. k=0:0001300. BALANCE. k=0:000014 approximately. 46°°8 46°°8 46°-0 46°-0 8°-0 . 4 BALANCE Recs | Bee ae { te aes torneo | 4626 Sey {4703 ona ee q j : 1 | | BIFILAR THERMOMETER. : ; ; Dec. 104. (Sunday). It having been observed that the magnets were disturbed to-day, observations were commenced at midnight Inday morning). - Pec. 114104 20m. Auroral light to NNW. 12 DECLINATION. Gottingen Mean Time. Reading Reduced. id. jhe Dec. 11 12 Dec. 11 18 19-39 16:01 15-22 15-70 16-13 BIFILAR. BALANCE. Min. of Obs. Min. of Obs. Reading Cor- rected. Reading Cor- rected. Se. Div. 524-5 525-0 525-2 505-7 512-2 512-2 511-2 519-0 517-8 515-9 516-4 518-9 510-7 499-9 493-5 498-1 498-6 499:8 505:3 496-2 498-6 505-1 510-2 515-6 512-8 512-8 515-7 512-3 517-4 511-2 506-7 509-6 513-3 519-2 522-9 519-0 517-5 514.0 511-3 512-9 509-2 512-2 513-0 514-8 512-6 506.2 513-9 512-1 511-4 509-4 508-3 13-62 14-55 504-8 507-3 Gottingen Mean Time. dba - che Dec. 13 8 Dec. 13 10 Dec. 21 10 DECLINATION. Min. of Obs. Min. of Obs. Reading Reduced. ° ca m. 10 | 25 15-19 16-37 17-07 21-28 18-55 19-36 19-58 8-55 9-81 11-44 13-15 13-79 15:03 14-78 14-11 13-41 13-00 13:08 13-14 13-24 16-98 21-24 23-86 22-65 20-81 21-04 20-68 20-85 22-11 20-52 20-52 19-61 23-32 22-45 21-04 18-26 17-88 17-38 17-92 522-1 ExtTRA OBSERVATIONS OF MAGNETOMETERS, DECEMBER 11—28. 1843. BIFILAR. BALANCE Reading |) Min. Cor- rected. Sc. Div. 507-0 507-7 507-5 512-6 518-7 517-3 516-8 520-8 516-6 513-4 512-6 © 512-6 513-1 516-6 519-5 519-5 518-3 516-1 514-3 516-2 24-60 24-99 23-07 23-07 25-78 26-40 23-88 24-99 26-62 BIFILAR. BIFILAR THERMOMETER. BALANCE THERMOMETER. Dec. 124 2h 20m, Dec. 214 102, Dec. 274 62, k=0:0001300. BALANCE. k=0:000014 approximately. 48°-0 | 48°-9 ? 274 7h, { } Dec. 114 12h, { 46°°9 47°-0 124 3h, { 47°-0 A7°-5} : 44° ; 284 1h, { 44° 12¢ 7h, 2 9° 47°] 58°-9 | 48-0? 55°:0’ 212 11, { et seq. 214 12h, { The Declination and Bifilar Magnets vibrating irregularly 2 to 5 Scale division. Continued from the Term Observations. Faint Auroral light to N. ? of Obs. 53° r read’ Cor- recte Ls re Extra OBSERVATIONS OF MAGNETOMETERS, DECEMBER 28—30. 1843. 73 DECLINATION. BIFILAR. BALANCE. | DECLINATION. BIFILAR. BALANCE. ae Min.| Reading || Min.| Reading || Min.) Reading cs Min-} Reading || Min.| Reading | Min.) Reading of Reduced: of Cor- of Cor- of Reduccd. of Cor- of Cor- Obs. Obs.| rected. ||Obs.| rected. Obs. Obs.| rected. || Obs.| rected. ie oD. m. Si a m.' Se. Div. m. Mic. Diy. dy, Ds. m. S m. Se. Div. m. Mic. Div. ec. 28 1 || 37 | 25 28-03)|| 37 510-9 || 38 851-7 | Dec. 28 2 5 | 25 27-40 7 511-3 8 876-6 40 28-72 10 27-22) 12 511-8 42 27-96 || 42 510-8 || 43 853-7 15 26-67 || 17 512-0 18 879:5 45 28-37 20 26-59 || 22 510-7 47 27-90 || 47 509-9 || 48 855-1 25 25-95 || 27 509-9 28 880-4 50 27-83 || 52 502-1 53 859-2 30 25-38 || 32 509-3 55 23-97 || 57 500-5 58 864-4 35 24-69 || 37 509-1 ec. 28 2 0 23-32 2 506-0 3 866-3 40 23-81 || 42 508:5 43 881-3 5) 22.35 7 511-8 8 865-4 45 22-47 || 47 509-6 || 48 880-9 10 23-23 || 12 511-6 13 866-6 50 21-31 }| 52 511-8 53 880-4 15 23-93 || 17 513-1 18 866-8 55 21-26|| 57 514-4 920 25-39 || 92 | 510-5 || 23 869-3 | Dec. 28 4 0 21-41|| 2 515-3 3 | 878-0 25 26-08 || 27 509-8 28 S69-4sinws a ae | See 30 26-77 || 32 | 514-7 || 33 | 868-9 | Dec. 29 10 0 | 25 12-50) 2{ 508.6 3 | 837-9 i 35 98.52 10 13-84] 12 | 511-7 || 13 | 838-5 37 29-31 || 37 516-3 38 870:0 15 14:75 || 17 511-2 40 30-51 20 15-19 || 22 511-8 23 838-2 42 30-65 || 42 516-0 || 43 871-9 | 35 16-47 || 37 514.4 38 836-8 45 30-62 || 47 513-9 || 48 873-1 | 40 17-07 50 30-76 | aS hiee | a | a ele lee 52 30-85 || 52 512-3 | Dec. 30 10 0 | 25 15-22} 2 514-2 3 849-8 55 30-74 || 57 505-9 || 58 8763 | 10 16-38 || 12 514-6 13 849-4 pe. 28 3 0 28-80 2 507-6 25 16:60 || 27 515-4 BIFILAR. k=0-0001300. BALANCE. k—0-000014 approximately. BIFILAR THERMOMETER. ) J, ooadaiy fice BALANCE THERMOMETER. \ Deri cesese {ie MAG. AND MET. oBs. 1848. z OBSERVATIONS OF MAGNETIC DIP. MAKERSTOUN OBSERVATORY, 1843. 76 OBSERVATIONS OF MAGNETIC Dip, JANUARY 2—APRIL 18. 1843. Duras NEEDLE. FAcE OF CIRCLE E. FACE OF CIRCLE W. opts fen aes eRe tee A.dipping|| Obsery, Middle of ‘ jue Num- Tem-| End Mark on Needle Mark on Needle Minus Dip, : -| dip- ‘ B. dipping. Observation. vation llben: tee ae. P , Jan. | ; 62\1 34.37 Jan. + 19-87 Jan. +29-62 Jan. + 26-00 Jan. + 22-12 Jan. + 21-00 Jan. 4+ 22-75 | Jan. + 20-37 | Jan. + 29-00 | Feb. + 29-00 Feb. +31-50 + 26-00 | Feb. | Feb. 421-38 +29-13 Feb. | Feb. 423-13 Feb. + 24-87 Mar. +19-50 | Mar. + 22.38 | Mar. + 27-00 Mar. + 23-00 | Mar. +21-87 Mar. + 26-87 Mar. + 24.37 Apr. + 24-25 Apr. +26-00 + 26-63 Apr. 4+ 23-63 + 24-62 POW EPO HWP> > OW POW Pp rnd Ppp Wd bp rnd ppd rrndnb rnb bok rnb rh bbs | Apr. * Observations considered good. + Observations considered bad or doubtful. Jan. 164 22%, In changing the poles of the needle the wrong end was at first taken, so that A. north was strengthened ; the poles W wards reversed. OBSERVATIONS OF MAaGneEtTic Dip, Aprit 21—Aveust 7. 1843. va NEEDLE. Wack OF CIRCLE E. FACE OF CIRCLE W. pengen eg quis a ceeera Gas A. dipping S| ~ aa of | xvum-|Zem- | End Mark on Needle Mark on Needle Mean. ae oes 5S | ee Weel) mp) pom fon | ow his 2" a1 310] 48 | 1 | 57 11k | Fo fo | 73 270 | 69 440 | 73 a5 | 71 sac} | +2850] 71 2287 | Ww | pete) 5] a | 8.] 2 30"| 23 90) co-ate | 23 208 71 36121] ona | m1 onan | 2 BREESE nee Ala eee eee ad 5325) 45) 1 | 53] {5 | 75 225 | G9 a1 | 72 850 | 69 110 | 11 1000) +2762) 71 2581 | W a2 4s] oo | 1 | ae | JB | 72 905/09 98 | 78 aes | se seo 71 181), s000) mu sous | w m3 0] ~ | 1 | 51/15 | F565 | 69 320 | 72 305 | oo 150 | 71 roof] +2550 | 71 22-75 | Ww B 525 a0 | 1 | oo JB | 7217s [60 a7 | 72 400 [60 55 | 71 200011 onas | 21 anone| 2 10] 00 | s | so | {8 |% 95 | 79.275 [99 200 | 78 95 | 71 25971) wrap | orese| Ww 340) 55) 1 | 56] 15 | to 110 | 73 265 | 60 as | 73 90 | 71 srooy| +2775 | 71 2342 |W go a5| 20 | 1 | ao |{8 | 79190 | 72 300 jon 400 |72 75 | 71 20121) 505 | 7 seaor| 2 | sao} sa | 1 | oe [{8 | 22205 |60.200 | 72 s00 | oo 28 [71 15284) 4 oner [21 oraot] w 230] 60 | 1 | -- | 45 | 73 480 | 69 250 | 72 a6 | os ano | 71 sar} | +9225 | 71 21-s0r] w we so} | a | [LE 78 408 | 8 ae | 2 ase | se mes 71 2284) a7 bt snout] Ww] so) oa] 1 | ve [44 | 22 85 | 28 98 | oe B18 | 73 100 | 71 38421) so57 |v avoe | w *020| 20 | 1 | 70 | A | 70 83 | 73 180 |o9 445 | 73 210 | 71 seo | +2938 | 71 2581") B | gro] a0 | 1 | zs | {4 | 7 £5 | 22 340/09 205 ) 79 188 [71 2724) sp57 | 71 asaoel | 22 55/ 50 | 1 | 58 | 14 | 70125 | 73 220 | 69 37-0 | 73 145 | 71 sooof | +2975 | 71 2412 | Ww es 1 | 649/45 | 74 aso | o8 295 | 73 200 | 67 soor| 11 sary | +3885 | 71 2281 | w Beso] 70 | 1 | or [1B p24 soa je ana | 2a as [or wo | 71 2721) 4 asa0| 71 aoa) a | B10) oo | x | v0 | {8 | 20 25 | 2 420 | ee 350 | 72 205 | 71 20781) so6)| m1 aaa | w| Bas} so | 1 |r | JP | % 90/09 50 [72 570 [60.205 | 71 121] 4 xan | 71 aos | w 8 0] 45 | 1 | 67/15 | 73 435 | co 280 | 72 500 | os 410 | 71 1102t| +4998 | 71 38311) B Bas) so) | vor] 1B [ze Ses foo aus | a ara js oto | 21 14001) «eran | 71 a7s0 | w Bro] oo | 1 | oo /{a |o2 ees |78 s10 [on mes /73 520 | 71 42201) 4 2na5 | 71 anort| a Bp) a) hs. |G eases leniaas [zp aes ce sno | 71 14871 | oro |x anon | w | BO) 180 | 1 | 62 11% | 73 8 | oo aro | 73 20 [oo 250 | m1 izert| +2412 | 71 200er) 2B | Sof ss a | me [ie as 1 | bas | a2 8 | ah] essen | 1 one Bo} oo | 1 | os | {2 | 99 80 | 24 70 | 09 oe | 74 145 | 71 88254) eos | m1 asso | w * Observations considered good. + Observations considered bad or doubtful. 304, The Dip instrument was removed from the Magnetic Observatory to the wooden house erected for it and the extra declinometer. see Introduction. } 54—Sept. 12. The Dip instrument during this period worked imperfectly, chiefly in lifting the needle. See Introduction for details. IG. AND MET. oBs. 1843. 78 OBSERVATIONS OF MAGNETIC Dip, AUGUST 14—DECEMBER 29. 1843. ne Dura- NEEDLE. FaAcr OF CIRCLE E. FACE OF CIRCLE W. : Mean Time, oe A.dippig Middle of of Num-| Tem- | End Mark on Needle Mark on Needle Mean. Minus Oba Observation. eee Bey, | Pee he a a a 70 B. dipping. “a eT | TE Ge ee ae Ge eae STE Raga ee =z Aug. 14-23 45] 120 | 1 | 61/14 | G5 aoa | 73 300 || 69 560 | 73 350 | 71 4087 |+ 9500] 71 23.07% Aug18 8 5] 40 | 1 | 73143 | 73 ies | o9 65 || 72 4¢5 | 69 170 | 71 1149 |* 2563] 71 230mm Ang.21122 45| 60 | 1 | 57/14 | G3 450 | 74 198 || 68 o95 | 74 190 | 41 aarst|+ 2350] 71 21-008 Ang.25 340] -- | 1 | 7914p |/73 a85 | o7 425 | 73 160 | 68 120 | 70 azo {+ 4250 | 7 9-50 Aug.257 0] ~ | 1 | 66144 | 65 aos | 73-200 || 69 465 | 73 350 | 41 a5.coy (+ 4588] 71 1250 Ang.282240/ 55 | 1 | 66/13 | 73 o10 | 69 400 | 2 s80 | 60 11s | 71 17-6; (+ 19-00) 7 274g Sept. 423 0] 45] 1 | 73] 14 | 65 a75 | 73 315 || 69 350 | 73 410 | 71 3605} (+ 2063| 71 200M Sept. 8 8 of] 45] 1 | 77 11m | 52°35 | os szst| 73 250 | os 210 | 11 seoy|+ 3025] 71 20mm Sept.12/ 1 5], 110 | 1 | 75 | 14 | G9 495 | 73 185° | 69 518 | 73 60 | 71 306s} |+ 1675) 71 22am Oct. 6 310 55 | 1 | 66 145 | 55 ‘G0 | Go avo | zs 166 | o9 sso | 72 aia; [- 1087) 71 sam Oct. 82310] 50 || 2 | 53 iA a SP eee 70 pga 5 aa fe oat — 30.38 | 71 18-88 on, 0 ove] so [a | oe] | 3 (as 2] 2 188 1 1] occ) na Oct. 9 220] 60 || 2 | 55 in 1 59-0 | 70 563 | 72 45 | 71 00 | 71 soooy|— 2263) 71 184m Nov. 20 1 30 1 | 40 is 7 39.0 | 69 47.0 | 74.350 | 69 sis | 72 1002; |~ 8%62) 71 251 Nov.20 3 5], 95 | 1 ‘A f 32.6 | 72 53 || 6s 257 | 79 see | 70 a800¢|~ 9245] 71 Nov. 21 135] 50 | 2 iA a 295 | 71 392 | 70 390 | 71 468 | 71 1ssoy|~ 2042 7 Nowa oo)» | a | ~|1k [70 sas | 1a "at | so ane | 11 ag | ieaal|- #05] 7 Nov. 24 310] 55 | 2 | 42 iB 1 sao | 71 98a | 71 aa | 71 170 | 71 sosor|~ 2268] 7 SU ES Ee) Tae ew 1A fl "52 | 71490 | 70553 | ti asa | 71 19.455 )—~ 1115) 7 Dec. 1 3 50] 60 | 2 | 39 ib a ora [71160 | 71 asa | 71 2a | 71 soosy|— 2040) 7 pee aasio| ro [a | ae [21 Se |i tee | 2s (28 | 2 aed sal ena a berated red eed braces Meex 128. 4° 07) a4 8 49 is m ‘38 i 595 v0 yeas ie ae i eras — 12.50]| 71 aM PAMIPE Taree a lace Py \A 70 47-0 | 72 140 | 70 26-0 71 43.0 | 71 7 Bot |— 1525 a Dee. 22 2 30/ 45 || 2 | 50 is n oes [ai 205 [yl ers bri so | ai seeo}|— ee pe Ege TT Se aa ‘A a 60 | 71 590 | 70 390 | 71 970 | 41 775y|— Saal m Dev 29 355] 70 | 2 | 47 te [fe 70 | 71 aso | m1 ao [7140 | 71 3575} | 143] 7 * Observations considered good. + Observations considered bad or doubtful. Aug. 184 8, A first attempt to change the poles of the needle failed, probably from the wrong end of the needle being taken. Sept. 12°— Oct. 64. The dip instrument and needles sent to Messrs Adie and Son, Edinburgh, to be adjusted. Oct. 94—Nov. 204, The observations in October were so unsatisfactory that they were discontinued for some time. Nov 244 3h, Before this observation the instrument was levelled, as it was previously slightly out of adjustment. OBSERVATIONS OF ABSOLUTE HORIZONTAL INTENSITY. MAKERSTOUN OBSERVATORY, 1843. 21. 1843. OBSERVATIONS OF ABSOLUTE HORIZONTAL INTENSITY, AUGUST 11 80 8°81 “UTLAWOLANOVIC UVTIAIG B19 &19 | 981g 66SR LCkq- . . 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AND MET, obs. 1843. 82 OBSERVATIONS OF ABSOLUTE HorIzonTAL INTENSITY, NOVEMBER 14—DEcEMBER 18. 1843. 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SI “00 "ayeq DAILY METEOROLOGICAL OBSERVATIONS. MAKERSTOUN OBSERVATORY, 1843. MAG. AN? MET. obs. 1848. 86 Dairy METEOROLOGICAL expire THERMOMETERS. ANEMOMETER. Gottingen Bano Mean Time ee Rain Peas A of ; Max. ||GauGE. te. | Direction of || Clouds moving from Observation. Corrected. - | Wet. iff. Janda Min. Wind. : Max. | Pres. ° 37-6 29:8 d. in. 1 29-883 904 892 925 29-943 929 845 802 29-385 476 506 475 29-442 580 659 738 29-834 787 652 578 SW by W. 29.438 . ‘8 | SWdyS. 336 ‘8 | SW by W.v. 220 SSW. 174 ‘5 | SW by W. Jan. Jan. mer CO wo A RD bo ow bo COMODO rANaAnm wWeeEo Sonwanw onnwe aS: coo- o W by 8. SW by W. SW. SW. SW by 8. SW by 8. SW by W. SW by W. SW by W. NW by N.v. oo oooooooco 476 : : : : . NW by N.v. 544 os : . . : SW by W. 544 . . : : : W.Y. 563 : . . . . W by S. 541 : : : . . W by S. v. 28-647 : : : : 4 SW by W.v. 687 : A ; 5 5 W by §. 681 : : . . : W by §. 651 : 3. : : 5 W by 8. 641 628 684 591 || 29-4 oeomooouoo oooceoo Jan. 81 20%. It is doubtful if the wet bulb was moist. Jan. 9214, By means of the rain gauge it was found that 6 inches of snow was equivalent to 0°65 inch of water. Jan. 1148», he wet bulb read higher than the dry bulb, although the former was moistened and the water frozen. In fut when the dry bulb reads below 32°, and the wet bulb reading is not given, it is from this cause. ' OBSERVATIONS, JANUARY 1—11. 1843. SPECIES OF CLOUDS, &c. h. 10. Linear cirri radiating from NW. to SE.; loose cumuli on E. horizon. 3. Woolly cirri pointing from SE. + curl cirri to SW. pointing from NE., cumuli and linear cirri to SE. 2. Linear cirri to W. pointing N. by W.; cum. on the horizon from NE. to SW by 8.; some patches of scud 5. Patches of woolly cirri loose cumuli nearly as before; linear cirri to W. pointing N. and S. [to E. 0. Cirrous clouds 2 3. Id; linear cirri. i 2. Semi-fiuid-like mass of cirro-stratus. 0. Seud, &e. . A bank of cirro-stratus to E., loose cumuli on Cheviot. 2. Scud. Id. 0. Scud, &d¢., linear cirri. 3. Cumuli to E., bank of cirro-stratus. 2. Cumuli and cirrous clouds to E. and NE., a few cirro-cumuli to S. 5. Loose cumuli and scud. 0. Cirrous clouds; red to E.; clouds breaking. 3. Homogeneous mass of cirro-stratus. 2. Scud + long cumuli on E. horizon; cirrous clouds above; breaking to S. 0. Id. + cirrous clouds, linear cirri to W.; misty rain lately. 0. Id. + idk a few drops of rain. 3. Id. 2. Id. +~ loose cumuli on E. horizon, linear cirri to S. >. Raining heavily. About 9% snow began to fall, and on the morning of the 8th about 6 inches had fallen. J. Cirro-stratus. 2. Cirro-cumuli and linear cirri. J. Cirrous clouds ? 2. Homogeneous cirro-stratus. Scud +~ finely reticulated cirri, pointing from NNE. and SW. ». Scud, &c. im “Id. ). A few patches of scud. ). Snowing heavily—ceased in half-an-hour. . Light snow just begun. A little ago cirrous clouds seen above scud, which at 21 moved from W. by N., but now the clouds are quite homogeneous. The greater part of the snow which fell on the 7th and 8th ). Seud + cirro-strati above. [has disappeared this morning. . Cirrous clouds and a few cumuli to E. . Haze and a few cumuli on horizon. . Patches of cloud to S. . Quite clear. | . Loose scud. ‘ ». Cirrous scud and loose cumuli; clearing off; some snow still on the ground. . Seud +— fine linear and mottled cirri. . Scud and cirrous clouds. |. Fine woolly cirri in zenith + scud on 8. horizon. |. A few patches of scud + linear, mottled and flame-cirri ; linear cirri pointing NNW. and SSE. ; cirro-strati. . Sky nearly covered with cirrous haze. Lunar halo about 23° radius. }. Nearly as before. Halo still seen. J. Some cirrous haze? Halo more distinct and beautiful than ever. i | Oc ~~ Observer’s 4444 4444 4454 4554 4555 WSS S aes Seagrsn 4 4eee4eee be clouds placed first have their motions given, the motions of those following the mark + are unknown; when more motions than i are given, the clouds to which they belong are placed in the same order, beginning with the lowest, and are likewise separated by Initial. 42aq | 88 DaILty METEOROLOGICAL eee THERMOMETERS. ANEMOMETER. Qus . Mean Time BARo- Rain tity METER. ‘ Pressure. . . Clouds moving from ; oF : Corrected. |} Dry. Wet. Diff. we edn Direction of of - Observation. and Min. Mea. |teren: Wind. Clouds d. m. in. © 3 3 7 in Tb. Tb. 0—10 Jan. 11 20 0 || 28-625 | 22-1 | 22-1 | 0-0 | 5, 0-0 | 0-0 3.0 225 0) 660 || 22-0 | 21-9 | O01 | 596 0-0 | 0-0 Ww? 5.0 Jan. 12 0 0 683 || 27-3 | 26-4 | 0-9 0.000 | 9° | 0-0 3.0 2 0 693 || 31-6 | 29-3 | 2-3 0-0 | 0-0 4( 4 0 715 || 31-4 | 28-9 | 2-5 0-0 | 0-0 8-0 6 0 71S 27-3 | 26-2 | It 0-0 | 0-0 1-0 8 0 720 || 25-6 | 24-4 | 1-2 0-0 | 0-0 0-0 10 0 695 || 24-1 | 23-5 | 0-6 0-0 | 0-0 0-6 20 0 || 28-029 | 33-9 | 33-8 | 0-1 | 91.6 2 | 3-0 SE. 10-0 22 0 || 27-909 | 34-3 | 33-3 | 10 | 59.. 3-5 | 3:0 | SEbyS. 10-6 Jan. 13 0 0] 27-864 || 35-6 | 34-7 | 0-9 0.200 | 22 | 05 SE. SSE? 9-8 2 5 || 27-837 || 37-6 | 35-3 | 2-3 0-0 | 0-0 10-6 4 0 || 27-850 || 35-6 | 34-7 | 0-9 0-0 | 0-0 10-0 6 0 || 27-874 || 34.2 | 33-7 | 0:5 0-0 | 0-0 WNw? 10-0 8 0O|| 27-910 || 34-2 | 33-5 | 0-7 0:0 | 0-0 WNW. 10-( 10 0 || 27-955 || 35-3 | 34-0 | 1-3 0-2 | 0-0 Nw? 10-€ 20 0 |) 28-364 || 35-5 | 320 | 35 | a9 7-5 | 6-0 |NW by W.v. Ww. 10-( 22 50 403 | 34-2 | 32-3 | 19 | 596 4.5 | 2.5 | WNW.v. 3.0 Jan, 14° 30) 0 454 || 34-2 | 31-1 | 3-1 3-8 | 1-5 |NWby W.v. W by N. 7.0 2 0 477 || 35-0 | 32-1 | 29 0:000 | 9.2 108 | Whys. W by 8. 4:0 4 0 470 || 30-8 | 30-6?| 0-22 1-2 | 0-2 W by S. 4.0 6 0 465 || 30-3 | 30-22] 0-1? 0-5 | 0-2 W byS. 7.0 8 0 507 || 27-3 | 24-7 | 26 0-5 | 0-0 2.5 10 O || 28-525 || 26-6 | 24-0 | 2.6 0-5 | 0-2 WSw. 1-0 Jan. 15 0 O ste 0-5 18 0 || 29-097 || 39-3 | 35-6 | 3-7 2:0 | 10 | Nby W 10-0 20 0 216 37-8. | 86-8 |) 1-5 | soe 15 |0-8 | Nby W 9.§ Bo G 329 || 38-8 | 36-8 | 20 | 18 | 1-0 | Nby W N by E. 7.0 Jane 16: 707.0 429 || 38-3 | 36-0 | 2-3 0-165 || 15 | 0-5 | NW by N N by W. 7.0 2 0 516 || 39-9 | 36-8 | 3-1 1:5 | 0-8 NNW. 2.0 4 0 608 || 38-9 | 36-1 | 2-8 1-5 | 0-5 NW. N. 2.0 6 0 688 || 37-9 | 35-4 | 2-5 1:8 | 0-0 N. 5.0 8 0 756 || 35-3 | 33-7 | 1-6 0-2 | 0-2 | NWbyN 3 10 0 800 || 32:3 | 31-2 | 1-1 0-2 | 0-0 0: ] 18 0 || 29-810 || 35-0 | 33-2 | 1-8 0:5 | 0-5 Sw. 20 0 772 || 36-3 | 34-9 | 1-4 | 595 10 | 0-5 | SWbyS 22 0 750 | 38-5 | 37-1 | 1-4 | 999 2:5 | 2-0 Sw. SW by W. Jan: 17.0080 739 || 39-8 | 38-5 | 1-3 0.098 || 29 | 1:8 SW by W SW by W. 210 725 || 41-3 | 40-1 | 1-2 2.5 | 2.0 WSsw ? WSwW : WNW. 4 0 752 || 40-3 | 39-6 | 0-7 0-8 | 0-2 | SW by W WwW: Nw. 6 0 764 || 43-0 | 41-8 | 1-2 0-2 | 0-0 W by S$. 8 0 777 ‘|| 42-9 | 41-3 | 1-6 2-5 | 0-2 | SW by 8S? 10 0 812 | 44.2 | 42-8 | 1.4 1:0 | 1-0 |SW by S. v. w. 18 0 || 29-915 || 44-3 | 43-8 | 0-5 1-5 | 0-8 | SW by W. WSwW ? 10: 20 0 922 || 43-7 | 42-9 | 0-8 1-5 | 0-5 | SW by W. WSW : W? 45-2 22 0 938 | 44-5 | 42-9 | 16 | 396, 2.0 | 1-8 | SW by W. SW: W. i Jane 18-0" 0 960 || 46-3 | 43-9 | 24 |- ; 1-8 | 1-5 SW. Wsw. 0-000 B30 983 || 46-2 | 44-7 | 1-5 3:0 | 1-2 | SWbyS. W. Jan. 114 20% 15™, The difference of the dry and wet bulbs = 0°4. Jan. 15718", The maximum temperature of yesterday was attained this morning, the maximum was therefore lost, and there was 20° minimum, as the temperature rose during the night ; at 154 6" the temperature was 27°°4. Jan. 17418". The index of the minimum thermometer was at 36°4, which was probably the temperature at setting yesterday mol ing ; the minimum given is from the dry bulb reading at 174 45, as the temperature was probably not below 43° during the night. OBSERVATIONS, JANUARY 11—18. 1843. 89 SPECIES OF CLOUDS, &c. 20. Linear cirri pointing NNE. and SSW., cirrous haze. 99. Patches of mottled cirri + cirri as before, but so thick to S. that the sun’s rays project but a faint shadow, a line of smal] cumulo-stratus to N. 0. Thick cirrous clouds to SE., fine curl, woolly, and linear cirri, the latter pointing N. and S. ? 2. Flame, woolly and reticulated cirri, the latter pointing N. by E. and S. by W., cirrous clouds and cumuli 4. Woolly cirri; cirro-strati and cumuli on NE. horizon. [on horizon. 6. A few linear cirri to E. pointing N. and S. 8. Quite clear. 10. Id. 20. Snowing. The wind has been very high during the night, but the vane of the Anemometer has been frozen up; the present force might be esti- 22. Sleet. rmated at about 5 lbs. 0. Scud + thick cirrous clouds, very hazy to E.; sky in patches to SW. 2. Homogeneous, except a few cumuli to S. 4, Beginning to snow. 6. Scud. 8. Id. 10. Id.; occasional patches of sky. 20. Scud + cirrous clouds to E. 22. Woolly and contorted cirri; snowing to N. and E.? surface of the ground freezing. 0. Woolly cirri + fine linear cirri pointing WNW., cumulo-cirrous clouds. me. Id. oo id. id. ip4.. Glee loose cumuli on NE. horizon, cirrous scud to §.; sky red to N. and NE. 6. Id.; linear cirri to W. lying N. and S., haze to 8. 8. Thin woolly cirri. 10. Thin cirrous clouds on horizon ; beautifully clear evening. Dark woolly-like clouds. Raining since 18" 30™ scud ; sky to NE. and SE. Scud + cirrous clouds and loose cumuli to S. and on NE. horizon. 0. Thin scud + woolly-edged cumuli. 2. Loose cumuli on N. horizon, woolly cirri and woolly-edged cumuli to S. 4, Patches of scud + loose cumuli to N., cumulo-strati to S. 6. Scud, clearing off rapidly. 8. Woolly cirri, a range of cumulo-strati to SE. 10. A small patch of woolly cirrus to SE. 18. Clouds homogeneous. 20. Id. 22. Scud, moving rapidly ; light rain. 7. Id [of rain. 2. Loose strings of scud, very low and moving rapidly : thick seud, slowly + cirrous clouds; occasional drops 4. Thin sceud: thick scud + cirrous clouds; large banks of white clouds to SE.; clouds blue to E. | 6. Scud +- cumulo-strati to S. | 8. Scud and cirrous clouds, 10. Scud. Wind in gusts. 18. Scud. i” 0. Cirri chiefly linear. A coloured lunar corona, the innermost colour is a bluish-white of about 2 diameters in breadth, next yellow of } diameter, | next a brownish or reddish colour of # diameter, next light-blue 14 diameter; the corona becomes elliptical, the major axis lying in the direction of the linear cirri which are probably a principal cause of it; red is afterwards seen to the outside of the blue and the inner red becomes yellowish or orange: the appearance of the clouds is very strange, the mass of clouds from the zenith to the SE. is a kind of cirro-cumuli, all which, in a radius of 30° from the SE. is intensely red; the clouds over the whole sky are more or less tinged with red. ] 2. Scud: cirro-cumuli and woolly cirri+linear cirri to E. pointing N. by W., masses of loose cumuli on E. horizon, cumulo-strati to N. | 0. Cirrous scud, mottled, linear, speckled, and contorted cirri, large woolly cirro-cumuli, the clouds have a strange appearance, the scud seems spreading out into a sort of cirro-cumuli and mottled cirro-strati. 2. Scud + woolly, mottled, and striated cirri lying E. to W., loose cumuli on E. horizon, cumuli-strati to N. MAG. AND MET. oss. 1843. : z ee eee Observer’s Initial. gd44ggdug dd4daddau 4aagaaaq | WD dWesbonas segadaagaua <= 40 90 DaILy METEOROLOGICAL eee THERMOMETERS. ANEMOMETER. Gottingen Bie. Mean Time RAIN of ee Noe! Weccan: |!" te hiseeiton oF Observation. , || Corrected.) Dry. | Wet. | Diff. |,naMin. ‘nr Wind. ax. | Pres. d. los) fe, in. © c Y & in, lbs. lbs. Jan. 18 4 O 30-002 || 47-1 45-5 1-6 2:0 | 0-8 SW. 6 0 044 | 46:9 | 45-3 1-6 1-8 1-0 SW. 8 0 089 || 46-3 45-4 0-9 1-2 | 0-5 SW. 10 O 122 || 46-2 | 45.4 0-8 0-5 | 0-0 18 0 30-139 || 46-2 | 45-2 1-0 1-8 1-0 WSwW. 20 O 174 || 45-6 | 44-2 1-4 46-7 18 | 0-5 WSw. 22 0 189 || 45-8 | 44-8 1-0 41-4 0-5 | 0-5 SW by W. van. 19 0 0 196 || 46-8 | 45-7 1-1 0-006 0-5 | 0-8 SW by W. 2an0) 176 || 47-0 | 45-5 1-5 1:0 | 0-0 40) 172 || 46-5 | 45-2 1:3 1:0 | 0-0 6 0 181 || 45-3 | 44.4 0-9 0-5 | 0-2 SW. 8 0 184 || 44-7 '| 43.7 1-0 0-5 | 0-0 10 O 176 || 43-5 | 42-5 1-0 1-0 1-0 SW by S. 18 0 30-089 || 43:0 | 42-1 0-9 1-2 | 0-0 20 O 30-064 || 40-7 39-9 0-8 47.3 0-0 | 0-0 ye 0) 30-061 || 41-8 | 40-9 0-9 42.0 0-2 | 0-0 Jan. 20 0 O 30-022 || 44-3 | 42.6 1-7 0-000 0-2 | 0-0 2 0 29-995 || 43-2 | 41-6 1:6 0-2 | 0.2 SW by S. 4 0 29-969 || 41-8 39-7 2-1 0-5 | 0-0 6 0 29-951 || 40-0 | 38-0 2-0 0-2 | 0.0 8 0 29-930 || 34-7 33-8 0-9 0-2 | 0-0 10 O 29-909 || 33-0 32-3 0-7 0:0 | 0-0 18 0 29-791 || 29-5 28:3 1-2 0:0 | 0-0 20 O 763 || 28-0 sais iste re 0:0 | 0-0 2200 748 || 27-7 Sets acts 26-8 0-0 | 0-0 Jan. 21 0 8 709 || 30-2 29-7 0-5 0-000 0:0 | 0-0 2 0 682 || 33-7 | 31-8 1-9 0:0 | 0-0 4 0 662 || 35-8 33-0 2-8 0-8 | 0-2 SW by W. 6 0 678 || 34-8 33-0 1-8 0-2 | 0-0 8 0 676 || 35-2 | 33-0 2-2 0-2 | 0-0 10 O 674 || 36-2 | 34-3 1-9 0-0 | 0-0 43-5 Jan. 22 0 0 25.4 0:5 18 0 29-654 || 37-1 36-8 0:3 15 | 0-0 20 O 635 || 38-0 36-9 1-1 46-1 1-2 1-2 S by E. 22) 30 628 || 38-9 37-5 1-4 36-0 1-2 | 0-5 S by E. Jan. 23 0 O 593 || 42-2 |-40-3 1-9 0-000 1-2 | 0-8 S by E. PA 0) 534 || 43-7 | 41-5 2-2 1-2 see 4 0 489 || 44-1 41-6 2-5 1-2 1:0 S by E. 8 0 409 || 43-7 | 42-0 1:7 3:0 | 0-5 S by E. 10 O 362 || 44:0 | 42-8 1-2 2:8 1:5 S by E. v. 18 0 29-306 || 46-8 | 44-9 1-9 3-5 1-2 SSW. 20 0O 325 || 46-9 | 45-3 1-6 44.0 2-0 1-5 SW by 8. 22 0 348 || 45-2 | 43-8 1-4 42.9 1-2 | 0-8 |SW by S. v. Jan. 24 0 O 369 || 46-9 | 45-3 1-6 0-181 2:0 | 2-5 SW by 8. 2 0 364 || 47-8 | 45-9 1-9 2:5 | 0-8 SW by 8. ¥ 4 @ | 371 || 47-6 | 45-2 2.4 1:5 | 0-8 SW by S. 6 0 379 || 46-4 | 44-0 2.4 1:0 | 0-8 SW by 8. .8 0 400 || 44-7 | 42-6 2-1 1-5 1-2 SW by 8. 10 O 424 || 44-3 | 42-1 2-2 1:0 | 0-8 SW by 8. 18 0 29-446 || 44-0 | 42-0 2-0 2-5 2-2 SW by 8. Jan. 241 Qh, he dry and wet bulbs, the maximum and minimum, and the standard thermometers, were volving frame. (See Introduction.) Clouds moving from ———$_$______ W by S. WSsw. WSW ? WSW. SW by W? SW. S by W. S by W. SSW. S by W? Sw?: NW? Sby W. Sby W: S. placed to-day on the new re- ae OBSERVATIONS, JANUARY 18—24. 1843. SPECIES OF CLOUDS, &c. h. 4. Masses of cirro-cumuli and mottled cirro-strati + varieties of cirri; sky of a deep blue, the clouds have a bluish or greyish tinge. 6. Clouds quite homogeneous. 8. Dark; light rain. LO. Light rain. 18. Scud, moving rapidly. 0. Id.; light rain. 2. Id., cumulo-strati on NE. horizon. 0. Id., nearly homogeneous. Id. 2. 4. Id. 6. Id., light rain. 8. Clouds homogeneous, dark. 0. Cirrous haze, stars seen dimly ; the moon rising red. 8. Scud, like a thin stratum of a semifluid pouring over the moon’s face. 0. Scud + the sky nearly covered with cirrous clouds and haze. 2. Id. + fine woolly and silky cirri. 0. Id. + woolly cirri, loose cumuli on horizon from N. to E. a id. 4, Id. + cirrous clouds to S. 6. Id. + id. ; the scud covers all the sky except three-tenths to E. 8. Stars seen indistinctly. 0. Id. 8. Light cirri ; lunar halo at 17" 50™. 0. 1s haze to E. and N., tinged with red to E. [Sands honeierose 2. Linear and mottled cirri lying in strata from E. to W., becoming thick haze on all sides except to W.3 fog, objects invisible at 2 of a mile to 0. Hazy as before to E., fog clearing off. 2. Hazy round horizon. . Scud. 6 » 1d. 8. Id. m Id. 8. Quite clear. 0, Linear cirri lying NW. to SE., loose cumuli on Cheviot. 2. Patches of scud on hor.: woolly cirri lying in strata from NW. to SE, 0). Nearly as at 22%, clouds thicker. 2. Cirrous-edged cumuli. . Scud: mottled and woolly cirri moving very slowly. 8 B Raining heavily. 0. Id. 8. Scud; rain; a flash of lightning seen; clouds moving off. 0. Id.; smart showers. 2. Id. + woolly cirri to E., loose cumuli to SW. ee id, +— woolly and Taoreled cirri. 2. Id., moving quickly : cirrous clouds, slowly + fine cirro-cumuli to E. Id. 5. Id.; smart shower commenced. 8. Scud to N. 0. Scud. 8. Scud ; cirrous clouds above ? Observer’s Initial. wastddnnds dened esuw wert sue 4eue 4 esnensgsnn See sannwss 92 DaAILty METEOROLOGICAL Te THERMOMETERS. ANEMOMETER, Gottingen ae Mean Time RAIN i ~ of a ; Max. ||GAUGE. Pressure. Direction of Clouds moving from Observation. Corrected.|| Dry. | Wet. | Diff. |,.aMin. he a] eee | aad Max. | Pres. Gi, Uhh | am in. ° ° ° ° in. lbs. Ibs Jan. 24 20 0 29-477 || 44.1 | 42-5 1-6 47.2 2-5 1-0 SW. WS8wW. 22 0 530 || 45-0 | 43-0 2-0 43-3 1-8 1-5 SW. W by S. Jan. 25 0 0 567 || 46-9 | 43-4 | 3-5 0.006 || 1:8 | 2:0 SW. W by S. 2 0 569 || 47-5 | 43-5 4-0 3-2 | 1:8 |SW by W. v. W. 4 0 580 || 46-1 | 44.0 | 2-1 2:0 | 0-8 | SW by W? WNW 6 0 628 || 45-8 | 44-0 1-8 0-8 | 0-2 | SW by W W by S? 8 0 620 || 46-8 | 45-1 1-7 1:0 | 0-8 SW by W 10 O 587 || 47-2 | 45-8 1-4 2-0 1-5 SW by 8 18 0 29-527 || 46-9 | 45-3 1:6 2-5 | 0-5 WSW. v WNW 20 0O 579 || 46:0 | 43-9 2-1 47-4 0-8 | 0-2 SW ? WNW. 22 0 655 || 46-3 | 44-3 2-0 43.2 0:8 | 0-5 WwW? WNW: WNW. Jan. 26 0 O 668 || 46-9 | 42-9 4.0 0-060 1:0 | 0-8 W by S 2 0 669 || 46-8 | 41-9 4-9 0:8 | 0-5 SW by W W by N. 4 0 673 || 45-3 | 41-8 3-5 12s alice SW by W WNW 6 0 680 | 44.5 | 41-4 3-1 1-0 1-0 |SW by W.v WNW. 8 0O 644 || 43-2 | 41-3 1-9 1:8 | 0-8 SW by W 10 O 589 || 45:0 | 42-9 2-1 2218 SW 18 0 29-425 || 50:0 | 48-7 1-3 6:0 | 2-2 SSW. 20 O 418 || 50-0 | 48-2 1-8 47.4 > Oi fa bd SW by 8 WSw. 22" 0 382 || 49-5 | 47-7 1-8 42.9 3:8 | 2-8 SW. SW by W: W Jan. 27 0 O 363 || 49-9 | 48-1 1-8 0-000 4-8 | 4-0 SW. WSW. 2 0 319 || 49-2 | 48-0 1-2 5-2 | 4-5 Sw. WSwW. 4 0 330 || 51-8 | 50-3 1-5 4:0 | 0-8 SW. W byS 6 0 333 || 55-2 | 51:8 3-4 2-2 S| 18). SW. WSw. 8 0 293 || 54-9 | 51-6 3-3 By) Pas SW. 10 0O 292 || 53-9 | 50-9 3-0 2:5 | 2:8 SW 18 0 29-154 || 48-8 | 43-0 5-8 9-0 | 7-0 WNW. vy. W. 20 0 167 || 47-3 | 42-7 | 4-6 55.1 5-0 | 3-5 Varying. W. by N. 22) 0 202 || 48-1 | 43-0 5-1 46-8 5:0 | 3-0 WSW.v. W. Jan. 28 0 0 227 || 47-8 | 43-7 | 4-1 0.014 || 3 | 3-5 | SW by W. v. W by 8. a (0) 185 || 47-5 | 45-4 2-1 5-0 | 3-8 |SW by W.v. W by S. 4 0 193 || 46:5 | 42-8 3.7 6-2 | 6-0 WNW. v. WNw. 6 0 293 || 44.9 | 40-9 4-0 8:0 | 2-8 WNW. WNW. 8 0 381 || 43-2 | 38-0 5-2 5-0 | 3-2 |NW by W.v. 10 0O 439 || 42-9 | 38-0 4.9 6:0 | 5-2 | NW by W. 48:3 Jan 2908 40 ane : rea 4.8 18 0 29-121 || 47-6 | 43-1 4:5 5-0 | 3-0 SW by W WNw. 20 0 104 || 46:3 | 42-0 4.3 541 4:8 | 3-5 |SW by W.v W. 22 0 109 || 44-8 | 40-2 4.6 46-4 7-2 | 82 | Wby N.v W. by N. Jan. 30 0 O 110 || 47-8 | 41-6 6-2 0-270 9-5 | 8-2 W.v. W. by N. 2 0 176 || 46:0 | 41-2 4:8 9:5 | 6:5 W.v. WNW 4 0 240 || 44-3 | 39-8 4-5 6-2 | 7-0 W.v W. by N. 6 0 265 || 43-8 | 39-9 3-9 6-8 | 8-0 NW WNW. 8 0 317 || 43-8 | 39-4 4.4 9-8 | 6-0 NW. 10 O 465 || 43-7 | 39-1 4:6 5-5 1-8 W by 8. 18 0 29-499 || 42-0 | 40.4 1-6 2-5 1-2 SW. 20 O 469 || 44-0 | 41-1 2-9 47.6 1:5 | 0-8 SW by W. W by S? 22, 0 433 || 45:2 | 43-0 2.2 41-3 2-5 | 0-8 SW by W. SW by W. OBSERVATIONS, JANUARY 24—30. 1843. 93 SPECIES OF CLOUDs, &c. Observer’s Initial. 5 @ Id. J. Cirrous scud +- mottled cirri; occasional drops of rain. ), Seud + beautifully mottled and striated cirri; cirro-cumuli becoming very thick to S.; the cirro-cumuli which cover the greater part of the sky lie in strata like fine snow-balls, in one place very distinct and separated from smaller ones by a sort of hazy edge, they get larger and more hazy to S.; the striated cirri are also of an uncommon kind, being like thick cirrous clouds lying in fine lines on the top of each other. ) ¥» Patches of seud + clouds of a thick, fibrous, woven, wavy texture, like a sort of cloth or matting; the line of hollows is from SSE. to WNW., giving a stratified appearance ; the fibres lie from WSW. or SW. by W., a few lines crossing from NNW. Pure and linear cirri in thick masses to NE., cirro-cumuli, also in strata; a few strips of sky to NE.; in a few minutes the cirri to N. point from WNW., there is a large bank of white cloud to W., below which the scud appears to come. Flocculent and striated thick muddled cirri and cirro-stratus, moving slowly. Scud + cirrous clouds. w wa 1+ ae . Dark. ~- }. Masses of scud. ), Idi, chiefly to HE. + a few linear cirri to S. |. Patches of scud : woolly cirri +~ linear cirri to NE. pointing NNW. ; loose cumuli and masses of scud to S. ), Thin woolly cirri covering nearly all the sky, linear cirri to 8S. lying E. and W. [the sky. Woolly cirri and cirro-cumuli +~ linear cirri to E. pointing NNW.; a sort of cirrous haze covers most of Patches of seud + thick cirrous haze or cirro-stratus at 3h a bright spot was seen where the sun was, now it is quite thick and the sun invi- . As before. [sible. ee ld. i Id. . Dark, scud. . Scud +- woolly cirri and cirro-cumuli. [of sky. . Scud, moving very rapidly and very low: cirrous clouds, moving slowly, very thick to E. + loose-edged cirro-cumuli to NW.; occasional patches . Thick scud. , Id. ; light Scotch mist. , Scud + cirrous clouds seen above. , Id. + cumulous scud and cirrous haze to W.; very black to SE. . Id.; cirrous haze ? . Id.; stars very dim. , Patches of scud. Kd. ; hazy to 8.; wind varying from NW. to SW. Scud + cirrous clouds. Id. + id. ; a few drops of rain. Id. + woolly cirri. Scud and cumuli + cirrous clouds to NW.; portions of rainbows seen since last observation. Scud. Clear ; something like an auroral light to N., but no corruscations; a hazy cloud ? Id. Sar wseaesrw ww esrb Ses Send sss wwssw Thin clouds shooting up from about WNW. | Thick masses of cirrous-edged scud ; hazy to E.; stormy like. Patches of scud + haze and loose cumuli on horizon from §S. to E.; faint linear cirri to W., pointing N. Scud ; occasional showers and rainbows. [by W.; occasional showers. ) Loose cumuli; passing showers. Id. id., rainbows. | Small patches of scud ; cirro-strati on SW. horizon. Clear ; haze to S. Clear. ( Scud ? 2( Scud + cirri and cirro-strati; clouds red to E. 4 Patches of scud + a thick mass of cirrous clouds moving very slowly; clouds blue-black to SE. was Seer negeuyw MAG. AND MET, oBs. 1843. 94 d. Jan. 31 Feb. 1 Feb. Feb. Feb. Feb. Feb. Gottingen Mean Time of Observation. So coeooocooocoeco BaRo- METER Corrected. DAILY METEOROLOGICAL THERMOMETERS. Dry. | Wet. | Dif. | Mae 47-8 | 45-3 | 2-5 49-0 | 47-3 | 1-7 50-2 | 47-7 | 2-5 49-3 | 47-7 | 1-6 50-8 | 48-2 | 2-6 46-8 | 42-8 | 4.0 38-0 | 36-2 | 1-8 40-6 | 38-2 | 24 40-3 | 37-7'| 26 | 378 42.5 | 39-1 | 3-4 44-9 | 40-2 | 4-7 45-0 | 40-8 | 4-2 42.0 | 41-3 | 0-7 40-0 | 38-8 | 1-2 42-4 | 39-8 | 2-6 39-9 | 36-7 | 3-2 38-1 | 34-8 | 3-3 36-8 | 33-1 | 3-7 aa 37-4 | 33-3 | 4-1 33-7 | 32.2 | 1-5 35-7 | 32.3 | 3-4 33-6 | 31-9 | 1-7 35-4 | 32-8 | 2-6 33-2 | 33-2 | 0-0 32-9 | 32-2 | 0-7 34-0 | 33-5 | 0-5 32-0 | 31-3 | 0-7 aa 33-6 | 30-7 | 2-9 32-7 | 30-4 | 2.3 30-9 | 29-92] 1-02 26-7 | 26-1 | 0-6 23-0 | 22-2 | 0-8 23-5 | 22-9 | 0-6 34-6 | 32-9 | 1-7 36-4 | 33-8 | 26 | 5,6 Sere Sn oeOe oat am tee 37-7 | 34.3 | 3-4 36-5 | 34.0 | 2-5 36-0 | 32-4 | 3-6 33-6 | 30-9 | 2-7 33-8 | 31-6 | 2-2 32-0 | 31-0 | 1-0 38-6 30-5 30-7 | 29-1 | 1-6 29-7 | 28-1 | 1-6 29-8 | 28-0 | 1-8 aa 34-3 | 32-8 | 165 36-1 | 32-8 | 3-3 35-9 | 33-1 | 2:8 36-5 | 34-5 | 2-0 35-3 | 34.9 | 0-4 36-3 | 35-0 | 1-3 RAIN GAUGE. 0-020 0-092 0-345 0-387 0-000 ANEMOMETER. Pressure. Direction of Max. | Pres. Wee. Ibs. | Ibs. 3:8 | 2.5 SW by W 2-8 | 2-0 SW by S 4.2 | 2-5 SW. 5:0 | 5-0 Sw. 7-2 | 4.0 SW. 4-8 | 1-8 SW by S 5:0 | 1-2 SW by S 2:0 | 1-5 Sw. 3-0 | 1-5 SW. 3:0 | 2-8 SW. 4-2 | 3-2 SW. 5-2 | 4-2 | SW by S. v 6-8 | 4-0 SW by W 4-5 | 1:8 SW. - 5-2 | 2:3 Sw. 6-2 | 3-0 Sw. 4:5 | 1:8 Sw. 4:0 | 1-2 SW. v 4:5 | 4:8 | W by N.v. 3-8 | 4-0 | SW by W 2-5 | 1-2 SW. 2-8 | 1-5 SW by W 2:5 | 2-5 Sw. 3-5 | 2-0 SW. 5-2 | 1-2 Sw. 2-5 | 1-0 |SW by W.v 3-0 | 0-5 SW by W 1-2 | 0-7 WNW. v 2-5 | 1-5 | NW by W 3:0 | 2-8 N by W 5:5 | 3-2 N. 4.2 | 1-2 N by W 4:0 | 4-8 NNW. v 8-0 | 6:8 NW by N. 9-2 | 8-0 N by W 12-8 | 4-5 N by W 5-2 | 5-0 N by W 5-5 | 7-0 N by W 5:5 | 6-0 N by W 7-0 | 2-0 NNW 222) 1-2 NNW 1-5 | 0-2 | NW by N? 1-8 1-5 | 1-0 NNW 1-2 | 0-8 NNW 0-8 | 0-5 NNW 15) 1-2 NNW 1:5 | 1-2 N by W 2-0 | 1-0 N. 2-5 | 1-2 N by W. 2:0 | 0:8 N by E 0-2 | 0-2 NNE. S 10-0 . —s a ., Cr > SP SHPRWSNSH Saapwor <— * « SP SHBPNONSH CODRNWON OBSERVATIONS, JANUARY 31—FEBRUARY 6. 1843. SPECIES OF CLOUDS, &e. . Scud creeping along horizon, cirro-cumuli, cirrous haze, bluish-black cirro-stratus to E.; rain apparently falling to S. and W., very stormy like. Scud +~ very fine mottled cirri; sky to E. Id.; some of the clouds have a blue tint. Id. very thick. Id. Long strips of clouds pointing from SW. to NE. extending through 120°; a flash of lightning. Clear. [19, . A great mass of cumuli or nimbi on horizon to S. and SE. ; a few drops of rain ; a flash of lightning about . Patches of scud to N.: mottled cirri, striated at the edges, the striz pointing NNW ~+ cirrous haze and cumuli on S. horizon. . Patches of scud +— loose cumuli on 8. horizon; a number of sea gulls seen flying from eastward. Scud + woolly cirri. Id.; sky on E. horizon. Heavy rain. . Scud ; like haze in some places. . Loose scud, light rain. . Seud. Id. + woolly and linear cirri, cirro-cumuli. . Cirrous scud + a large mass of cirro-stratus on E. and 8. horizon ; a slight fall of snow. . A smart shower of snow. Id., scud. Scud: woolly cirri + cumuli and nimbi falling in snow to S. and E. Id. +— cumuli round horizon. Id. . Snowing; lightning seen before and after this. . Clouds to NW. and SE. . Scud. . Cirrous scud + woolly cirri, large masses of cumulo-strati on NE. horizon. . Woolly cirri + cumulo-strati on NE. horizon. Id. + id., loose cumuli to S. Woolly cirro-strati, fallmg in snow on all sides but the S.; quite overcast, with snow in a few minutes. . Cumuli to NW. . Clear. . Overcast. . Homogeneous, a slight fall of snow. Scud ; a few drops of rain. . Loose vapoury clouds falling in powdery hail; beautiful cumuli to SE. PPPS Cirrous scud -~ loose cumuli to S. . As before. . Cirrous scud. Id. Id. Id. 8. A bank of clouds to E. . Woolly cirri and cirrous scud to E. . Large woolly cirro-cumuli + linear cirri to SW. Id 68 . Cirrous scud + a homogeneous mass to S.; a slight shower of snow. +— cirrous clouds. . Scud; light rain; coloured lunar corona. Loose cumuli. 95 Observer’s Initial. Wiss nwnes Sern sessnnw ows snnwss Sonn sesuw wossdow Hest sannwes 96 Gottingen Mean Time of Observation. a. Feb. 6 19 i Feb. 7 O Feb. 8 O Feb. 9 0 Feb. 10 0 | Feb. 11 0 | Feb. 12 0 j=) Feb. 13 0 SS e oo > Feb. 62 224, Probably no minimum temperature during the night. The reading given is taken from the observations of yesterday afternoo! No difference between the dry and wet bulbs owing to the mist which has been falling. The maximum temperature is taken from the readings of the dry thermometer yesterday. Although the temperature is considerably below freezing, the snow water in the cistern of the wet bulb has not been froze Feb. 84 6h—10h, Feb. 124 04, Feb. 124 182, this morning. BAaRo- METER Corrected. Darity METEOROLOGICAL THERMOMETERS. : Max. Wet Diff. anaiMan! 38-1,..| 1-2 38-8 | 1.0 39-3 | 0-9 oe 39.2 | 1-9 39-9 | 1:3 40-2 | 0-6 40-0 | 0-3 39-3 | 0-4 39-3 | 1-2 39-7 | 0-4 39-7 | 0-3 40-0 | 0-2 ane 40-5 | 0-5 40-8 | 0.4 40-9 | 0-4 41:0 | 0-0 40-2 | 0-0 39-8 | 0-0 38-0 | 0-8 37-8 | 1-3 36-0 | 07 | 05 34-8 | 3-2 ; 33-5 | 3-2 32-4 | 3-0 31-5 | 3-3 31-8 | 1-3 31-9 | 2.3 32-5 | 0-7 31:7 | 2.2 32-8 | 2-1 ee 33-2 | 3-9 34-8 | 3-5 34-5 | 3-1 34-1 | 3-0 34-0 | 2.7 33-7 | 3-4 33:3) | 37 33-1) || 3:7 au00) 43) | 254 34-0 | 4-0 34-9 | 4-1 35-0 | 3-8 34-9 | 2.2 35-0 | 1-3 35-0 | 1-3 38-62 35-3 28-3 | 0-5 PE C2 Nn 30-5 | IK6eell og 32:2 | 2n% 33-0 | 3-0 33-0 | 3-8 RAIN GAUGE. 0-016 0:041 0-043 0-095 0-006 0-021 ANEMOMETER. Pressure. Direction of Max. | Pres. ee lbs. lbs. 9:0 | 0-8 NE by N. 1:0 0-2 NE by N. 0-5 0-5 NNE. 0-8 0-5 NE by N. 0-5 0-2 N by E. 0-5 0-2 NNE. 0-8 0-5 NE by N. 1-5 1-0 NNE. 1-5 0-5 NNE. 2-2 0-0 0-5 0-2 NE by N. 0-2 0-0 0-2 0-0 0-0 0-0 0-0 0:0 0-0 0-0 0-0 0-0 0-0 0-0 0-2 | 0.2 N by E 0-5 0-2 N by E 9.9 9.2 N by E 3-2 | 3-0 NbyE 3-5 1:5 ING 3:0 | 2.2 N by E 3.5 9.0 N. 3.0 2.0 N by E 2.8 sae N by E 3.2 0-2 NNE 1-2 0-5 NNE 9.5 0-8 NNE 1-5 1-2 NNE 2-8 0-8 NNE 2.0 1-0 NE by N 1-2 1:0 NE by N 1-2 1-0 NE by N 1-0 0-8 NE by N 1-2 0-8 NE. 1-0 0-2 NE. 0-5 0-5 NE. 0-8 0-2 NE. 0-8 0-8 NE. 1-2 1-0 NE. 0-5 0-2 NE. 0-5 0-0 0-2 0-0 0:8 0:8 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-2 0-2 WNw. 0-8 0-5 WNW. OBSERVATIONS, FEBRUARY 6—13. 1843. 97 SPECIES OF CLOUDS, &c. Observer’s Initial. ch. 19. 20. Two currents of scud. 22. Scud +~ cirrous scud to S.; very thick to E. 0. Cirrous scud. 2. Scud. 4, Light rain, Scotch mist. 6. Kd. id. 8. iid., scud, 10. Seud. 18. Homogeneous. . Scud ; light rain. ' Id. id. To. Adz, id, 2. ds * (id. 4. Id. id. mp. Id. id. re . Id. id. . Clouds Meine a little, mist gone. 18. Very thick and dark. 20. Patches of scud, haze. 22. Scud; raining. oe + woolly cirri and cirro-eumuli. . ss d 4. Id., moving from different directions between N. and E. §. Heavy black scud. 8. Thin scud, snowing a little. 1 0. Scud. 8. Loose’scud, about 14 inch of snow has fallen during the night. 0. ids; some snow falling. 22. Cirrous scud and woolly cirri + a few cumuli to S.; snowing to N. 0. Cirrous scud and woolly cumuli + cumuli to NW. (2 Loose cumuli and scud. . Cirrous-scud. . A shower of fine hail. . Cirrous scud. Id. Scien Sin SSS ss 0. Seud. 2. Cirrous scud. . Scud. Id. Id. Id. Id. Id., light rain. Ssesgudssun wwednnnss Seuwsssue Sige Pemeee satbudesuy | 118. Large cirro-cumuli + linear cirri and haze to E, 20. Scud. 22. . Cirrous scud moving slowly. c Scud, motion scarcely perceptible. . | 4, Loose scud. MAG, AND MET. OBS. 1843. 2B 98 Gottingen Mean Time of Observation. a. Feb. 13 Feb. 14 Feb. 15 0 Feb. 16 0 Feb. iif © Feb. 18 0 Cocco COoOCO CoooocooSeoeoeo cooscoossososo cooocoeoscesooo esses eeeo FS Fs Feb. 19 O So no —) ooo BaRo- METER Corrected. 29-677 662 636 29-601 599 DaIty METEOROLOGICAL THERMOMETERS. Dry. | Wet. | Diff. pera 34.0 | 32-0 | 2.0 32-3 | 31-2 | Ll 34.2 | 32-4 | 1-8 98-7 | 27.5 | 1-2 27.0 | 25-4 | 1-6 7.2 | 94.5 | 2.7 oe 96-9 | 24.2 | 2.7 27-0 | 24.8 | 2.2 25-0 | 23-6 | 1-4 24.0 | 21-9 | 2-1 24-1 | 22.9 | 1-2 23-1 | 22:0 | 1-1 19-6 | 19-0 | 0-6 19-3 | 18-0 | 1:3 22.7 | 20-6 | 2-1 ae 26-3 | 23-3 | 3-0 98-6 | 25-4 | 3.2 98-9 | 26.0 | 2.9 98-1 | 26-0 | 2-1 97-3 | 26-3 | 1-0 26-6 | 25-3 | 1-3 29-0 | 21-5 | 0-5 22.4 a ae 922.0 | 20.2 | 1-8 ce 31-2 | 28-7 | 2.5 31-8 | 28-8 | 3.0 31-8 | 29-9 | 1.9 28-9 | 27-0 | 1-9 93-3 | 22.0 | 1-3 24-4 | 23-4 | 1.0 25:8 | 24.2 | 1.6 27-0 | 25-8 | 1-2 28.0 | 26-9 | 11 | 93° 31-2 | 30-2 | 1-0 33-8 | 32-2 | 1.6 32-2 | 31-2 | 1.0 ea ire et Wel ote 20-3 | 20-0 | 0-3 18-8 | 18-0 | 0-8 8.2 | 7-0 | 1.2 7.3 | 7-3 | 0-0 13-8 | 11-8 | 2-0 ae 24-6 | 24.0 | 0-6 : 32-4 | 30-0 | 2.4 31-7 | 30-2 | 1-5 24.4 nae Be 24.0 | 21-3 | 2.7 24.4 | 23.7 | 0-7 36-4 18-2 35-7 | 32-0 | 3-7 36-1 | 32:8 | 3-3 36-7 | 33.3 | 34 | 373 ANEMOMETER. eae Pressure. | Direction of || Clouds moving from Max. | Pres. mee. Cloud in. Tbs. Ibs L a 0-5 | 0-2 1 0-2 | 0-0 { 0.2 | 0-0. 2.0 1-2 | 0-8 N by E. N2 Q. 2:0 | 0-5 ING NNW. 0-2 | 0-2 N by W NNW 5: 2-2 | 1:5 N by W N by W: WNW. 2 0-000 Irs (aes | NW. e 2-5 | 1:8 N by W 15 | 0-5 NNW. 0-8 | 0-5 NNW: 0-8 0-2 NNW. + 0-5 | 0-0 0-0 | 0-0 } 0-0 | 0-0 0-2 | 0-0 i 0:000 | 6.9 | 0.0 N by W. 0-0 | 0-0 7.( 0:0 | 0-0 W by N. 10-¢ 0-0 | 0-0 0-0 | 0-0 1 0-0 | 0-0 0-0 | 0-0 N by W 0-0 | 0-0 0-0 | 0-0 N by E 0-000 | 9.9 | 0.2 | Noy w. N by E 0-2 | 0-0 N. 0-2 | 0-0 0-0 | 0-0 ¢ 0-0 | 0-0 ; 0-5 | 0-5 | Nby W. NbyE », 1:0 | 0-8 N by W. ). 0-2 | 0-0 NE. vA 0-2 | 0-0 10 OOS E iar: "0:0 NNE. 8 0-2 | 0-0 NNE. 7 0-2 0-0 NNE. 2. 0-0 | 0-0 04 0-0 | 0-0 o 0-0 | 0-0 0. 0-0 | 0-0 3. 0-0 | 0-0 NE. 0. 0-001 | 22 | 20 NE. 8 0-0 | 0-0 Vs 0-0 | 0-0 NE. 9. 0:5 | 0-0 3. 0-0 | 0-0 0 0-5 4 15 | 1-0 | NEbyE. 10: 1-2 | 1-0 | NEby E. 10: 2-5 | 1:8 ENE. 10: “he. he OBSERVATIONS, FEBRUARY 13—19. 1843. 99 SPECIES OF CLOUDS, &c. . Flocculent cirri to W., red ; haze to E., reddish. . A few patches of cirrous clouds to E. . Linear cirri pointing from WNW. to ENE. A lunar corona about 12° radius. . Seud. . Cirrous scud. . Loose cumuli; a few flakes of snow a little ago. . Loose-edged cumuli: fine woolly and linear cirri. Id., with cumulo-strati; cirro-strati to SW.; snow falling from some of the cumuli to E. . Scud Fal loose cumuli on horizon. Id., from NW. to NE., cirro-strati to SE. . Loose cumuli on E. horizon. . A patch of cirro-stratus to SE. . Cirro-stratus on SE. horizon. . Cirro-strati and cumulo-strati on E. and SE. horizon. . Ranges of cumuli on horizon from N. to E. Id. . Thin woolly cirri to NW., like haze near the horizon +- cumulo-strati on NE. horizon. . Woolly and tangled cirri, apparently dropping to E. and S.; cumuli on horizon. 6. Cirrous scud, a few flakes of snow. 8. Id., cumulo-strati on horizon to E. 10. Id. 18. Scud. [them tinged with red. 20. Cirrous scud + large and beautiful masses of cumuli and cumulo-strati on horizon from N. to E., some of . Range of cumuli on E. horizon. . Cirrous scud + cumuli on E. and N. horizon ; snowing to E. . Loose-edged cumuli and cumulo-strati. . Masses of cirrous scud +— cirrous-edged loose cumuli to E., cumuli to S. . Large masses of cumuli and cumulo-strati to S., and on horizon from N. to E. . A few patches of clouds on N. horizon. Loose cumuli. . Cirrous scud + cumuli to NE.; a few flakes of snow during the night. . Scud, light fall of snow. Id. + loose cumuli to NE. ; light shower of snow 10™ ago. Id. ; a shower of snow. . Cirrous scud + cumuli on horizon from N to E.; snowing since last observation till within 15™. 4. Cirrous scud + beautiful ranges of cumuli on N. and E. horizon. 6. Scud + beautiful cumulo-strati to SE., some with cirrous crowns ; splendid pyramidal cumuli on N. hori- 8. Patches of scud; a few flakes of snow. [zon ; sky hazy, red to E. and NE. 10. Clear. 18. Some patches of scud. [masses of scud. 20. Cumuli and cumulo-strati on horizon from NW. to E. and to S., linear cirri to S. pointing towards ENE., 22. A few patches of seud + cumuli on N. horizon. 0. Large masses of cirrous-edged cumuli +~ piles of cumuli to N. 6. | 8. | 10. | | 118. 20, 122. . As before ; snowing to N. ? . Scud + woolly cirri to 8., cumuli on 8. horizon; beginning to snow. Masses of scud, woolly cirri, loose cumuli round the horizon. Patches of clouds to N. Snowing lately. Homogeneous. Id., a few flakes of snow. A sort of hail-snow falling. Observer’s Initial. WWESnonss Senn sed wos snnnds Senses wedsnwwss san was 100 Gottingen Mean Time of Observation. d. Feb. 20 Feb. 21 Feb. 22 _ None = pone & SCADRNONTMA CADKHRNONTDMA DAAKNOE Feb. 23 0 Feb. 24 0 Feb. 25 0 Feb. 26 0 S Baro- METER Corrected. Datty METEOROLOGICAL THERMOMETERS. ANEMOMETER. ; Max. ee Pressure. Direction of Dry. | Wet. | Diff. janaMin. wy Wind. o oc w a in lbs. lbs. 36-8 | 33-8 | 3-0 0.062 2-5 | 2.0 ENE. 36-8 | 33-4 | 3-4 9:9" 52.9 ENE. 36-0 | 33-0 | 3-0 2.5 | 1-8 ENE. 35:8 32-6 3-2 3-8 1-8 ENE. v. 36:3 32-8 3-5 2-5 0-5 ENE? 34:3 33-2 1-1 2-2 1:5 E by N. 34.9 | 34-7 0-2 Py | lpr} ENE. 35:0 | 34-6 | 0-4 36.8 1-0 | 0-5 NE by E. 35-2 | 35-0 | 02 | 314 1-5 | 1-5 ENE. 36-3 | 35-8 | 0-5 1-5 | 0-2 ENE 2 36-0 | 35-7 | 0-3 0-151 | 9.5 | 0.2 | NE by B? 36-4 | 36-0 | 0-4 0:5 |.0-5 | NEbyN. 36-9 | 36-2 | 0-7 0-8 | 0-8 E by N. 37-2 | 36-6 | 0-6 0-8 | 0-2 37-2 | 36-4 0-8 0-2 | 0-2 NE? 36-0 | 35-8 | 0-2 0-5 | 0-2 | NEbyN. 36-4 | 35-4 | 1-0 37.3 0:5 | 0-2 | NEbyN. me lari bor ate “aap beceee at 38-1 | 37-7 | 0-4 0-053 | og | 0-5 | Nu by Ri 37-9 | 37-4 | 0-5 0-8 | 0-5 | NE by E? 37-5 37-2 0-3 0-5 | 0-2 NE by E. 37-4 | 37-1 0:3 0:8 | 0-5 NE. 37-2 | 36-9 | 0-3 0-5 | 0-5 | NE by. 36-1 | 35-5 | 0-6 1:0 | 1:0 | NEbyN. 36-0 | 35-4 | 0-6 38-1 1:0 | 0-5 | NEbyN. 37-0 | 36:3 | (0-7 | 3.0 0-8 | 0-8 NE. 37-9 | 37-1 0:8 > 1-0 | 0-8 NE. 37-4 | 37-1 | 0-3 0-194 | 1.9 | 0.5 NE. 37-1 36-7 0-4 1-2 | 0-8 NE. 36-3 | 35-7 | 0-6 1-2 | 0-8 | NEbyN. 36-0 | 35-7 | 0:3 1-2 | 0-8 NE. 36-8 | 36-5 | 0-3 1-2 | 0-8 | NEby N. 37-8 37:3 0:5 0-8 | 0-0 37-7 | 37-2 | 0-5 | go4 0-0 | 0-0 37-9 | 37-6 | 0-3 35-3 0-2 | 0-0 39-6 | 38-5 1-1 0-144 0-2 | 0-2 BNE. 39-1 | 37-9 | 1-2 0-5 ae 39-3 | 38-0 | 1-3 0-2 | 0-0 37-8 | 36-3 1-5 0-2 | 0-0 36-0 | 34-8 1-2 0-0 | 0-0 35-6 | 34-7 | 0-9 0-0 | 0-0 34:7 | 33-8 0-9 0-0 | 0-0 33-0 | 32-4 | 0-6 39.4 0-0 | 0-0 35-5 | 34-0 | 1-5 | oa 5 0-0 | 0-0 36-6 | 34-3 | 2-3 0-014 0-0 | 0-0 37-6 | 35-4 | 2-2 0-0 | 0-0 35-3 | 34.5 | 0-8 0-2 | 0-0 35-3 | 34-1 1-2 0-0 | 0-0 34-4 | 33-4 | 1-0 0-0 | 0-0 33-3 | 32-8 | 0-5 0-0 | 0-0 ry 37-2 0-3 32-7 Clouds moving from ENE. ENE. E by 8. ENE. . A few flakes of snow. . Light shower of hail-snow. . A few small hail-stones. . A few flakes of snow. Id. 18. Light rain. 20. Scud ; a few drops of rain. ae. id.; id. Id. ; id. id. ; id., a . Scotch mist. OBSERVATIONS, FEBRUARY 20—26. 1843. SPECIES OF CLOUDS, &. Scotch mist. . Scud; clouds breaking to SE., cirrous clouds seen. Scotch mist. 0. a2. 4 6 8. 0. 18. 20. Td. 22. Id. 0. Id. 2. Td. 4. Td. 6. Id. 8. Td. LO. Id. 18. Light rain. 20. Scud; light rain; cirrous clouds seen. 22. Id.; id. 0. Id.; id = Id.; id 4, Id.; id im Id.; id m Id; id © iId.; id 8, Light rain. 0. Scud + cirrous clouds seen above. 2. Scotch mist. 0. Scud + cirrous clouds, . Id.; a few drops of rain. 4. Id.; light rain. meid.; id. i Id. 0. . Id., a lightish appearance to N., Auroral light 2 = Id. 10. Cirrous scud : woolly cirri, single patches in zenith resembling fleeces of wool; heavy cloud to E. 2. Cirrous scud. 10, Id. +— patches of loose scud. B Seud ; thick to NE. . Cirrous seud ; hail lately. Loose scud +~ cirrous clouds. y dark. | : | MAG. AND MET. oss, 18438. 101 Ohserver’s Initial. COSSmMSrnhs Sfeesssun Sssessesgssun Seesaw wes wos sun ss wo ssuw 102 DaiIty METEOROLOGICAL baie THERMOMETERS. ANEMOMETER. Gottingen BARGE Mean Time RAIN : BE METER. : Mas Goce. Pressure. Direction of Clouds moving from Observation. Corrected.|| Dry. | Wet. | Diff. | vain. = Wind. is ax. | Pres. d. m. in. 2 ° S 2 in. Tbs. Ibs. 0-10, Feb. 26 18 0 99.094 || 34-7 | 32-3 2-4 1-2 | 0-8 NE by N. 10-0 20 O 29-071 || 33-7 | 32-0 1-7 39.3 1-0 1-0 NE. ENE: ENE. 10- 22 0 29-056 || 34:3 | 33-2 1-1 39.6 a2 | iD NE. 9-8 Feb. 27 0 0] 29-015 || 36-9 | 34-2 | 2.7 0-000 1-2 | 1-2 NE ENE. 8. 2 0 28-973 || 39-0 | 35-7 3°3 1-8 1:0 NE. ENE. 9.9 4 0 28-962 || 37-7 | 36-0 1-7 2-5 1-5 NE. ENE. 8-0 6 6 28-972 || 35-6 | 33-1 2-5 1-8 | 0-5 NE. ENE. 6-0 8 0 28-991 || 34:8 | 31-9 2-9 0-8 | 0-8 NE 8.0 10 0O 29-001 || 33-5 | 32-9 0-6 1-5 1-0 NE 10-0 18 0 || 29-046 || 33-6 | 32-5 | 1-1 1-8 | 0-2 | NEbyN. 4.( 20 O 085 || 34:3 | 32-3 2:0 39.3 0-5 | 0-2 NE by N. ENE, 9-5 22 0 139 || 35-1 33-9 1-2 32.7 1:0 | 0-2 NE by N. NE by E. 5-0 Feb. 28 0 0 194 || 35-8 | 35-0 0-8 0-042 1-8 | 0-5 NE by N. NE by E. 9-0 2 0 234 || 38-3 | 34-4 3-9 ; 0-5 | 0-8 NNE. NE by E. 8-5 4 0 276 || 36-0 | 33-6 2-4 2:0 | 0-2 NE by N. NE by E. 4.0 6 0 329 || 34-6 | 31-5 3-1 1-2 | 0-2 NE by N. NE by E. 7-0 8 0 387 || 32-2 | 30-0 2-2 0-2 | 0-0 3-0 10 O 428 || 31-2 | 30-9 0-3 0-2 | 0-0 10-0 18 0 29-524 || 28-2 | 27-0 1-2 0-8 | 0-2 NNW. 1.0 20 0 566 || 29-9 | 29-3 0-6 39.3 0-8 | 0-0 7: 22010 608 || 31-3 | 29-7 1-6 26-4 0-5 | 0-2 N by W? NNE. 3+ Mar. 1 0 O 639 || 33-8 | 31-2 2-6 0-091 0-2 | 0-2 N by W. 1-4 210 652 || 36-6 | 33-3 3-3 0:8 | 0-2 N by W. 9.5 4 0 676 || 35-7 | 32-3 3-4 1-0 1-0 N. 3-5 6 0 699 || 33-9 | 31-4 2-5 0:5 | 0-0 N? 5.0 8 0 732 || 31-6 | 30-2 1-4 0-2 | 0-0 9-8 10 0 754 || 33-0 | 30-5 2-5 0-2 | 0-2 N by W 5-0 18 0 29-824 || 29-8 0-5 | 0-0 10-0 20 0 854 || 30-7 | 29-0 1-7 37.3 0-2 | 0-2 N. N. 9.0 22 0 868 || 34-7 | 31-2 | 35 | Oo. 0-2 | 0-2 N. NNE TE) Mar. 2 0 0O 898 || 34-8 | 31-8 3-0 0-000 1-2 | 0-5 NNE i} 2 0 894 || 36-8 | 33-0 | 3-8 0-8 | 05 | Nby W 4 0 904 || 36-2 | 32-4 3:8 1-0 1-2 N 6 0 913 || 35-2 | 32-3 2-9 1-0 | 0-2 N N. 8 0 939 || 35-0 | 31-8 3-2 0-2 | 0-2 N 10 O 949 || 34:0 | 31-3 2-7 0-5 | 0-2 N 18 0 29-958 || 32:8 | 30-7 2-1 0-5 | 0-0 20 0 29-973 || 33-2 | 31-1 2-1 36-7 0-2 | 0-0 22 0 |} 29-995 | 34-3 | 31-1 | 3:2 | oo. 0-2 | 0-2 | NbyW ‘ NE Mar. 3 0 0] 30-007 || 36-3 | 33-0 | 3-3 goo nee | ere is 2 0 30-023 || 38-0 | 34-2 3-8 0-2 | 0-2 N. 4 0 30-017 || 37-8 | 34:3 3-5 0:5 | 0-2 N NNE 6 0 30-037 || 36-6 | 33-6 3-0 0-0 | 0-0 NNE 8 0 30-078 || 33-9 | 31-7 2-2 0-0 | 0-0 10 O 30-095 || 35-0 | 31:5 3:5 0:0 | 0-0 18 0 30-111 |} 23-8 | 22-9 0.9 0-0 | 0-0 20 O 137 || 20:9 | 20-3 0-6 38-1 0:0 | 0-0 22) 90 149 || 28-4 | 26-9 1-5 20-2 0-0 | 0-0 Mar. 4 0 0O 141 || 35-9. | 33-0 2-9 0-000 0-0 | 0-0 NW? 2 0 112 || 39-6 | 35-2 4-4 0-0 | 0-2 W. 4 0 104 || 41-0 | 35-6 5-4 0-5 | 0-2 WSwW. 6 0 083 || 36-4 | 34-2 2-2 0-5 | 0-0 8 0 091 || 33:0 | 31-3 1-7 0-2 | 0-2 SW by W. 10 O 083 || 31-7 | 30-6 1-1 0-5 | 0-2 SW by W. OBSERVATIONS, FEBRUARY 26—Marcu 4. 1843. 103 SPECIES OF CLOUDS, &c. Observer’s Initial. h. 18. Scud ; a slight sprinkling of snow has fallen during the night. 20. Id: linear cirri; very fine snow beginning to fall. 22. Nearly as before ; fine snow; sky to NE. 0. Scud + woolly cirri, cumulo-strati on NE. horizon. 2. Large masses of loose cumuli and scud. 4. Scud + woolly cirri and large cirro-cumuli, cumuli on NE. horizon. 6. Scud on horizon +~ large cirro-cumuli, loose cumuli and cumulo-strati on horizon. 10. Occasional slight showers of snow. 18. Scud ; a large mass of clouds to E. 20. Loose scud +~ cirrous clouds. 22. Loose cumuli + fine cumuli to NE. and E. 0. Loose cumuli and scud ; snow and hail lately. . Masses of scud and cumuli + fine mottled cirri. . Loose scud + cirro-strati to N., loose cumuli on N. and NE. horizon. . Thin scud to NW. . A slight fall of snow since last observation. 2 4 6 8 0 8. Scud to E.; 3 inch of snow has fallen during the night. 0. Snowing. 2. Cirrous scud. 0. Loose cumuli to SE. and cirri to S. 2. As before. 4. Scud to W.; cirri; cumuli and cumulo-strati on horizon from N. to E. 6. Thin scud + thick cirrous clouds to NE.; cirri and cumuli to S. 8 0. 8. 0. . Scud. Id. Cirro-cumulous scud +— woolly cirri and cirro-cumuli. Id. Id. Id. . Scud and loose cumuli, woolly cirri; cumuli to N. and W. . Cirro-cumulous scud +~ cirrous clouds. . Cirro-cumulous scud. . Woolly cirri lying in lines radiating from N.; cumulo-strati on NE. horizon. . Loose cumuli +~- woolly cirri and cirrous haze. Seud + fine woolly cirri. Id. + id. . Haze on E. horizon. . Thin cirrous haze to E. and N. 23, Thermometer exposed to the sun 65°. . Network and beautifully mottled cirri, moving very slowly; cirrous haze round horizon. . A few patches of cirrous clouds near horizon to E. and 8. . Very fine curled and mottled cirri, patches of loose cumuli to S. and E.; haze on E., and N. horizon. . Linear cirri pointing towards NNE., woolly, striated, and reticulated cirri; haze to N. . Thin haze to W.; a small corona round the moon. . A bank of clouds on N. horizon. Stddsduwds wwssuewss weds bosses ss woes ss WH een sss 104 DAILY METEOROLOGICAL Gottingen THERMOMETERS. ANEMOMETER,. Mean Time BEE RAIN P i of METER. ’ Max. ||GAUGE. ressure. | Direction of Clouds moving from @bservation: Corrected. || Dry. Wet. Diff. andhtins eo eae Wind. ax. | Pres. d. bh. mi. in o © G 2 A n lbs. lbs. Mar. 5 0 0 oa 1-3 18 0 || 29-919 || 36-1 | 35-1 | 1-0 2-5 | 0-0 20 O 925 | 37-3 | 36-4 | 0-9 | 444 0-0 | 0-0 22 0 925 | 43-1 | 40-6 | 25 | 346 0-0 | 0-0 Mar. 6 0 0 921 || 46-0 | 43-1 | 2-9 eane 0-0 | 0-0 SSW. 2 0 910 || 48-4 | 45-3 | 3-1 0-2 | 0-2 SSW. SSW. 4 0 925 || 47-8 | 44-9 | 2-9 0-8 | 0-2 SSW ? SSW. 6 0 926 || 45-0 | 43-6 | 1-4 0-2 | 0-0 SSW. 8 0 946 || 42-8 | 42.3 | 0-5 0-2 | 0-0 10 0 957 || 42-0 | 40-8 | 1-2 0-2 | 0-0 18 0 || 29-970 || 38-2 | 37-7 | 0-5 0-0 | 0-0 20 0 || 29-978 | 40-8 | 39-5 | 1:3 | 20.5 0-0 | 0-0 22 0 | 29-982 | 42-1 | 40-6 | 15 | 3,9 0-0 | 0-0 S by E. Mar. 7 0 O/|| 29-994 || 45-8 | 42-7 | 3-1 0-2 | 0-2 S. Sby EB 2 0 || 29-987 | 44-9 | 39-8 | 5-1 OO 2 | 0 8. 8 by E. 4 0|| 29-979 || 45-3 | 40-0 | 5-3 1-0") 0:8 8 6 0 || 29-995 || 40-7 | 37-3 | 3-4 0-5 | 0-2 8 0 || 30-025 | 34-3 | 32-7 | 1-6 0-2 | 0-0 10 0O|| 30-030 || 32-7 | 30-6 | 2-1 0-0 | 0-0 18 0 || 30-105 | 24-3 | 24-0 | 0-3 0-0 | 0-0 20 0 125 || 24-0 | 23-0 | 1.0 | yo. 0-0 | 0-0 22 0 143 || 29-1 | 28-4 | 0-7 21-9 0-0 | 0-0 Mar. 8 0 0 158 || 35-0 | 32-7 | 2.3 oneal 0 | 0-0 2 © 148 || 41-7 | 37-7 || 4:0 ; 0-0 | 0-0 4 0 135 || 43-7 | 39-2 | 4-5 ‘0-0 | 0-0 6: 0 120 || 41-2 | 38-1 | 3-1 0-0 | 0.0 8 0 138 B80 S17 | GS 0-0 | 0-0 10 0 148 || 28-9 |.27-4 |} 1-5 0-0 | 0-0 18 0 || 30-148 | 27-2 | 26-6 | 0-6 0-2 | 0-0 20 0 150 || 29-7 | 28-8 | 0-9 re 0-0 | 0-0 Nw? 22 0 IBS | 330) | 303 | ez og 0-0 | 0-0 Mar. 9 0 0 120 || 39-9 | 37-3 | 2-6 0-000 || 22 1-22 2 0 085 || 43-3 | 38-8 | 4-5 0-5 | 0-2 SW. 4 0 085 || 42-6 | 39:0 | 3-6 0-5 | 1-2 WSsw? SW 6 0 062 || 38-8 | 37-0 |. 1-8 0-5 | 0-0 W by S. 8 0 042 | 38-3 | 36-6 | 1-7 0-2 | 0-0 WSsw. 10 0 027 || 36-4 | 34-7 | 1-7 0-2 | 0-0 18 0 || 29-836 || 35-1 | 33-6 | 1-5 0-2 | 0-0 20 O S15 jal a0 Ta ae 0-0 | 0-0 Q2 0 784 || 35-4 | 34-8 | 0-6 S54 0-0 | 0-0 Mar. 10 0 O Tait \\-39-2) 38-7 | 0:5 gene ee | oe 20 731 || 36-6 | 36-3 | 0-3 0-0 | 0-0 | 4 0 728 || 41-2 | 40.0 | 1-2 0-2 | 0-0 SW by W. 6 0 748 | 40-1 | 39-6 | 0-5 0-0 | 0-0 W by S. / 8 0 783 || 34-7 | 34.6 | 0-1 0-0 | 0-0 10 0 806 || 32-7 | 31-9 | 0-8 0-0 | 0-0 Bt 18 0 || 29-884 || 35-8. | 35-4 | 0-4 0-0 | 0-0 i 20 0 908 || 38-0 | 37-7 | 0-3 | 445 0-0 | 0-0 t 22 0 O18 |) 42:8, 42-0 110-8, Aaa = 0-0 | 0-0 Ww. a Mar. 11 0 0 902 || 49-0 | 46-1 | 2-9 0.019 | 2:0 | 9:0 Ww. . QC 872 || 48-9 | 46-1 | 2-8 ; 0-2 | 0-0 W. 4 0 844 || 48-8 | 45-6 | 3-2 0-2 | 0-2 Sw? Ww. . ; OBSERVATIONS, Marcu 5—11. 1843. SPECIES OF CLOUDS, &c. 18. Cirrous clouds and haze. 20. Scud and cirro-strati to H., sky to E. 2. Scud, cirro-strati to 8. and E. 0. Scud + cirro-strati to S. and E. 2. Id. + fine woolly cirri; cumulo-strati on horizon from NE. to S. 4. Id. + cumulito E.; patches of sky occasionally. ald. -— id. ee eld. 10. Id. 18. Id. 20. Id. 22. Id. and mist. 0. Scud and loose cumuli. 2. Cirrous scud, loose cumuli, and cirro-strati. 4. Patches of cirrous clouds, hazy on horizon. 6. Id. id. 8. A distinct auroral arch, altitude 10°, breadth 8°, its crown being in the magnetic meridian ; no pencils. 10. Clear. 18. Id. 20. Id. 22. Id., cirrous haze on horizon. om: Id., id. 2, Id., id. a ,1d., id. oe id., id. is. Id. nD. Id. 18. Linear cirri or cirrous haze to E. 20. Loose cirro-cumuli in zenith +— thick woolly cirri to E., very red at 195; cymoid cirri at 19. 22. Patches of cirro-cumuli; linear cirri to SW., pointing NW.; cirrous haze on horizon. 0. Cirro-cumuli and fine woolly and mottled cirri; haze on horizon. [haze near horizon. 2. Long lines of cirri lying in different directions, but chiefly towards WN W.., as if indicating wind ; cirrous 4. Scud moving quickly + thick cirrous clouds and haze over the sky. 6. Cirro-cumulous scud moving slowly + woolly cirri, thick cirrous clouds ; cirrous haze on horizon. 8. Cirro-cumulous scud. 0. Patches of cirrous clouds; faint lunar halo. 20. Light fall of snow. 22. A few drops of sleet. Light rain. . Raining. Seud. {cumulous seud to E., fringed with woolly cirri. Patches of loose scud + patches of woolly and curled cirri, linear cirri to W. pointing N. and S., cirro-stratiand cumuli to NE.; a long mass of Patches of cirrous clouds. Scud. Cumulous seud + cirrous clouds seen above to S. Id. Seud. Id. + cirrous haze above. PN ONSH CNP SSNS 105 Observer’s Initial. B B WwW W WwW B Ww WwW WwW B W WwW WwW B B WwW WwW W B B WwW WwW Ww WwW WwW WwW WwW B B WwW WwW W B WwW WwW WwW B B WwW WwW WwW WwW W WwW WwW B B Ww WwW WwW B | MAG. AND MET. ozs. 1848. | , 2D 106 ; Datty METEOROLOGICAL : THERMOMETERS. ANEMOMETER. Gottingen Bano Mean Time i Rain of METER z f Max. |Gaver.| Pressure. | Direction of Observation. Corrected. - | Wet. * land Min. d. Mar. 11 OooB8 So Mar. 13 pe Rese eee 44444 a = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o oqooooocooco coooooocooco cooooceo De NV atwuawecsoSopeéA ee Oe bo Obn oro bo © ° ww SOAP SHSS SORRNSHSS SHmpL SO OF OBSERVATIONS, Marcu 11—17. 1843. 107 SPECIES OF CLOUDS, &c. S ic ) Scud. WwW Td. ; a Id. WwW . Masses of scud. . Loose scud + woolly cirri and cirro-cumuli to E., cumuli and cumulo-strati on horizon. . Masses of scud to W. and S.; woolly cirri to E.; patches of scud and cumuli on horizon. . Scud + cirrous clouds to §. and SE.; loose cumuli on N. and S. horizon, a slight shower in 10 minutes, . As before. ; [showers around. . Scud + loose cumuli on horizon to N. and NE.; passing showers. Id.; cirrous clouds ; cumuli and cumulo-strati on horizon, light shower. Scud, having a cirro-cumulous disposition. [very narrow. d., id. ; cirrous haze above; at 10 10™ a beautiful lunar halo, the ring . Small patches of scud to N. Id. . Loose cumuli and seud. Id. + cumulo-strati to N.; rain to S. and SE. Masses of scud + loose cumuli on horizon, cirro-strati to E. Sea-gulls seen coming from the sea. Scud +- cumuli and cumulo-strati on horizon from NE. to S.; slight shower. As before ; slight shower lately. Scud + thin cirrous clouds, Cumuli and cumulo-strati on NE. and E. horizon; ground covered with hoar-frost. , Fine woolly and striated cirri + patches of loose cumuli to S. and E. . Masses of woolly cirri, curled at the edges, pointing from WNW.; finer cirri above. Nearly as before ; detached masses of scud and loose cumuli + some of the cirri are linear and flame-like, the lines branching off from the main body, which lies NW. and SE., and point to WSW. or SW. Scud, loose cumuli and cumulo-strati + cirrous haze to E. A thermometer in the sun, sheltered from the wind, shewed 85°. . Loose cumuli + woolly cirro-cumuli. Send + large cirro-cumuli, linear cirri to S., pointing E. and W.; loose cumuli all round the horizon ; rain falling to N, from dark scud. Seud. Id. Scud, cirrous clouds above. Hazy cirrous clouds; cumuli and cirro-strati on horizon. Scud ; haze above 2 | Patches of scud +— thick mass of cirrous haze or cirro-stratus. As before ; a few drops of rain. Seud. Id.; a few drops of rain. Scotch mist. Scud, clouds breaking. Id. ; light rain. Mas; id. occasionally, Id. Id. 6. Loose scud + cirrous clouds, linear cirri to S. pointing towards W by N., loose cumuli to N. and E. B. Scud. Id. . Masses of scud to N. and E., woolly cirro-cumuli and woolly cirri lying SW. and NE. ; cirro-strati to SE. 4 wuddwawdd wudduwwdd weddew odd weddowwdd wdduddds 108 Gottingen Mean Time of Observation. Mar. Mar. 18 Mar. 19 0 Mar. 20 0 Mar. 21 | Mar. 22 0 Mar. 23 Mar. 24 0 2 o comwoocoooc coocococoeoccoo Sarre Se Soc oS Oo SiS So Sloot {Slo yorOrS eo oom ome mo mr BaRo- METER Corrected. Dry. THERMOMETERS. ANEMOMETER. 4 Max. eee Pressure. Direction of Wet. | Diff. |naMin. es lee ee C ce © in. Tbs. lbs. 42-0 | 0-2 | yg 0-2 | 0-0 A1-2)4| NOS ane 0-2 | 0-2 | SW by W 50-9 | 3-7 0.000 || 92 | 0-0 W. 53-0 5-1 0-0 0-0 49-7 | 3-7 0-2 | 0-5 | NEby E. 46:7 2-0 0-5 0-2 NE. 43:8 | 0:7 0-5 | 0-2 | NEbyE. 43-0 | 0-7 0-2 | 0-2 | NEby N. 61-5 40-5 Os 39-0 2-0 1-2 | 0-2 E by N. 39-8 0-7 - 0-2 | 0-2 E. 53-3 42-5 1-9 39.3 0-2 | 0-0 bth 2-9 0-000 0-5 0-0 4-0 2-4. 0-2 | 0-0 41-8 0-9 0-5 0-5 NE by E. 39-9 1-0 0:5 0-2 E. 38:8 0-9 0-2 0-0 39-1 0-8 0-5 0-0 41-4 0-4 0-5 | 0-0 43:00) 90815 |) 5 5 0-0 | 0-0 BONO OT See 0-5 | 0-2 | SEbyS. 49.7 | 2-7 0.039 || 1:3 | 1:0 | Sby 5B. 49-2 4-9 1:8 0:8 SSE. 50-0 | 4-2 0-5 | 0-2 | SEbyS. 46-3 | 3-0 1-0 | 0.2 | SW by 8? 44-5 1-0 0-5 | 0-0 42-7 0-3 0-2 | 0-0 45-7 2-0 0-0 | 0-0 alias 0-2 |0-2 | SbyE. ac-0) 1-08 1 cele 0:8 | 0-2 | Sby E. 50-6 | 3-1 0.290 || 1:2 | 1:2 | Sy 5. 52:4 | 5-6 2-5 | 1-5 | Sby W. 51:8 | 7-4 12 |08 | Sby W. 48-8 | 5-2 0-2 | 0-2 | Sby W. 45-6 | 2-1 0:0 | 0-0 44.7 1:5 0-0 0-0 46:8 2-0 2:0 | 0-2 STU aso Wile 12 |08 | EbyS. IAD) | oe 0-2 | 0-0 | NNE. wanes 0125 | 93 | og . . 0-5 | 0-8 SE by 8. 51-0 2.7 1-2 | 0-8 SSE. 48-7 2.5 1-2 0-0 43-2 1-5 0-2 0-0 40-8 0-4 0-0 0:0 39-8 | 0-0 0-0 | 0-0 42.2 0-4 55.3 0-2 0-2 NE by N. sew Ves ess 0-5 |0-5 | EbyN. 44.9 | 0-8 0-2 | 0-8 NE. 42.4 | 1.3 0-062 | 3.8 | 1-8 |) ENE. Dairy METEOROLOGICAL Clouds moving from SSE. SSE. ENE: SEby E:SW by W. Eby 8S: SE by EH: 0? Varying. SSW. S by W? SSE. E by S$. E by N. OBSERVATIONS, Marcu 17—24. 1843. SPECIES OF CLOUDS, &c. 2 4 Woolly cirri, cirro-cumuli, and fine linear cirri, all lying WSW. to ENE.; masses of loose cumuli near horizon all round, cumulo-strati to E. 22. A few patches of scud + loose cumulo-strati ; cirrous haze. 0. Patches of scud ; large loose cirro-cumuli; cumulo-strati to NNE. 2. Masses of scud + cumulo-strati above cumuli to N. and E. 4. Large loose cirro-cumuli; cirrous haze. [point. 6. Patches of scud moving quickly +- lines of cirro-strati and linear cirri rising from a semicircular nucleus on E. horizon and radiating from that 8. 10. 18. Scud. 20. Thick scud ; breaking to ENE. where cirrous clouds are seen above. 22, Loose scud +~ patches of woolly pas ranges of loose cumuli to 8. and E. 0. Scud + cirrous clouds. 2. Thick scud ; raining to NW. [the horizon seems covered with the thin scud. 4. Thin misty scud apparently close to the ground and moving very rapidly: thick scud moving less quickly: woolly cirri moving very slowly ; 6. Thin scud: scud: cirrous clouds. 8. Scud. 0. Id. 8. Id.; light rain. ® Id. [horizon. Id. + woolly cirro-cumuli and fine linear cirri lying N. and 8.; cumulo-strati and loose cumuli near Scud and loose cumuli + woolly cirri and cirro-cumuli. , Detached masses of cumuli + cirro-cumuli. . Scud and masses of woolly cirro-cumuli. 0. A large mass of electric clouds moved up from SSW. 3; at first the W. was covered, but the tendency of the whole is towards the E.; the clouds ba at first appeared to be acted on by several currents, now they appear to move from SSE, and SE.; large drops of rain ; sky to E. with beau- 8 Heavy showers, scud. [tiful cumulo-strati to SSE. 0. Clear. Scud in different strati, moving very slowly + cumulo-strati and cirro-strati to H., the latter quite red. 0. Scud ; light rain. 2. Raining. j Patches of cirrous scud +- A mass of clouds covers the sky from NW., by E. to SE. to an altitude of 40°, curled cirri at the edges, apparently becoming haze to NH.; cumulo-strati near horizon ; cumulito SW. 2. Detached masses of loose cumuli + the sky almost completely covered with thin crossed woolly cirri; cirrous haze on E, horizon, _ Masses of loose cumuli and cumulo strati +- woolly cirrous clouds. 3. Large masses of cumulo-strati + cirrous clouds. 3. Thick masses of scud. ). 3. Scud. ). Id. %. Id.; smart shower. -_ . Id. + cumulo-strati to §.; breaking to S. id. . Id.; light rain. }. Hazy clouds on E. horizon. }. Small patches of scud ; cirrous haze on horizon. y Scud. }. Thick fog. ). Fog clearing off. me: . Scud ; light rain. . Seud ; raining lately ; clearing to S. MAG. AND MET. oBs. 1843. 109 Observer’s Initial. wns ssuns WH DOShSosnnt teense saw sow WaStann Senn ssesuw Datty METEOROLOGICAL fees THERMOMETERS. ANEMOMETER. Gottingen BRO Mean Time x Rain ee a 5 of EBS : Max. |/GAUGE. ssure. | Direction of || Clouds moving from Observation. Corrected. ; Wet. and Min. \ Wind. Max. | Pres. ad. oh. Mar. 24 4 Bi by N. by N. E by N. E by N. ENE. ENE. 8. ENE. Eby 8: EbyS. ENE. E by 8. ENE. Eby N:E. E by N. ESE. W. NE. =) & Bs bs eZ bd ed to E by N. E: WNW. Various : NE? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 oa ocooococeoco ooooe wae OBSERVATIONS, Marcu 24—30. 1843. lil SPECIES OF CLOUDS, &ce. ch. 4, Scud. 6. Id. 8. Id. 10. Dark. 18. Different strata of clouds, the lowest scud ; a few drops of rain. 0. As before; no rain. 22. Seud: cirrous scud + cirrous clouds, 0. Id. + patches of woolly cirro-cumuli to 8. 2. Id.: scud +~ loose cumuli on horizon. 4. Scud or loose cumuli. 6. Loose cirrous clouds, chiefly to E., moving very slowly. 8. Clear. 0. Id.; several shooting stars seen. 18. Scud; snowing; a small quantity of snow has fallen during the night. 20. Id.; a few flakes of snow. a2. Id. id. = Id. im. Id. 4, Id. Sb. Id. iB. Id. 10. Id. mB. Id. 20. Id. 22. Scud or loose cumuli in large masses. 0. : id. =. Id. id. 4, Id. id. 6. Detached masses of loose cumuli and scud. 8. 10. Scud ? (8. Patches of loose cumuli to W.; cumulo-strati on E. horizon; cirrous haze to S. 20. Thin scud +— cumulo-strati to N.; linear cirri to S. lying ESE. to WNW. [NW. to SE. Co Detached patches of loose cumuli in strata on N. and H. horizon: linear cirri lying and pointing from Masses of cirrous scud, some of which at an altitude of about 80° from ENE. is evidently in an eddy, as the mass remains nearly stationary, whilst its parts move in all directions, tending principally towards NE., but vanishing in its evolutions: linear cirrous clouds. . Patches of cirrous clouds; patches of cumuli to N. Patches of cirrous scud to W., which grow quickly into larger masses and then disappear + small patches of cumuli to N. . Cirrous clouds on E. horizon. 8. Clear. 0. Id. Anauroral arch, the crown to NNW., altitude 15°; it shortly loses the form of the arch ; no streamers. > ie bo 18. Cumulo-strati on E. horizon ; cirrous haze all round the horizon; much hoar-frost. 0. Chiefly woolly cirri; indistinct linear cirri in cirrous haze to N., lying ESE. to WN'W.; cirrous haze all 22. Thick mass of cirrous clouds and haze. [round the horizon. | 0. Id. 1/2. Cirrous scud + cumulo-strati to N. and E.; loose cumuli to §.; cirrous haze. 14, Small patches of cirrous seud + long lines of linear cirri to NE. lying NNW. to SSE., curled to S. ; sky covered with cirrous haze. 16. Loose scud ; cirrous haze ; light rain till 5" 60™. 18. Scotch mist. 10. Id. 8. Masses of scud moving quickly +~ fine linear cirri to NE. pointing NNW.; cirrous haze. ' i \ Observer’s Initial. dduwdddeu 44e0 | 4 eegedeudd deddon v4 wedddouds waagdued iD Dainty METEOROLOGICAL THERMOMETERS. ANEMOMETER,. Gottingen Mean Time irene RaIN Pressure Cloud ing fi of ; i Max. ||GauGn. * | Direction of ouds moving trom Observation. Corrected.|| Dry. Wet. Diff. and Min. M. Wind. ax. | Pres. d. ee eG in. 9 iS 2 ic) in. lbs. Ibs. Mar. 30 20 0 | 29-040 | 46-6 | 446 | 20 |... 3-2 | 1-2 Sw. SW by W. 92 0 048 || 49-6 | 46-9 | 2-7 ; 2.5 | 2-8 | SWbyS. WSwW. Mar. 31 0 0 058 || 52-2 | 483 | 39 | #8 0.069 | 22 | 39 | SWoys. Wsw. 2 0 086 aust 48-0 | 3-7 15 | 2-2 | SWbyS. SW by S: WSW. 4 0 093 || 52-4 | 49-6 | 2.8 2-2 | 0-8 SW SW. 6 0 094 || 49-5 | 47-3 | 2-2 0-8 | 0-0 SW by W 8 0 082 | 46-6 | 45-7 | 0-9 1:0 | 0-8 | SWbyS SW by 8 10 0 102 || 47-5 | 46-2 | 1-3 0-5 | 0-5 | SWbyS 18 0] 29-089 || 46-3 | 45-4 | 0-9 0-5 | 0-0 SW by 8 20 0 || 29-092 | 47-9 | 46-0 | 1-9 56:3 0-5 | 0-0 SW by S 22 0|| 29-077 || 50-3 | 47-6 | 2.7 4 4.7 0-5 | 0-0 8; | Apr. 1 0 O| 29-047 || 52-8 | 48-0 | 4:8 Ie.oo0 || 22 Pee 8. 8. 2 0O|| 28-995 || 53-8 | 51-0 | 2-8 2-8 | 2-0 S by E. Ss 4 0|| 28-967 || 53-6 | 51-7 | 1-9 2-0 | 0-0 Ss 6 0|| 28-954 || 53-0 | 50-4 | 2-6 1-8 | 0-2 SSW. S by W 8 0O|| 28-953 || 49-3 | 48-3 | 1-0 0-8 | 0-5 SSW SSW. 10 0 || 28-973 || 48-7 | 47-5 1! 1-2 0-2 | 0-5 SW. ie. : A 58-4 pr. 2) 70 0 45-7 0-0 18 0O|| 29.268 || 45-0 | 44-2 | 0.8 0-8 | 0-0 WiN 20 0 338 || 49-0 | 47-0 | 2-0 Om 0-2 | 0-8 W byS. W:s 22 0 380 || 53-9 | 48-9 | 5-0 ie 1-0 | 0-5 WSW WwW Apr. 8 0) 0 414 || 53-6 | 48.2 | 5.4 ; 2-0 | 0-8 WSsw. W 2) 10 443 || 54:0 | 47-6 | 6.4 0930 Ta. | OS. | Sw by W. Ww. $0) ait] soa [asa | fo 3 ice] "| ; : 2 : WSW. 8 0 417 || 41-9 | 40-2 | 1.7 0-5 | 0-0 10 0 398 || 40-9 | 39-0 | 1-9 0-0 | 0-0 18 0] 29-236 || 40-3 | 38-8 | 1-5 0-0 | 0-0 SSE 20 0 206 || 44:0 | 43-0 | 1-0 0-0 | 0-0 SE by 8:8 : 22 0 173 || 49-8 | 47-0 | 2.8 re 0-8 105 | ESE. ESE Apr 4 0 0 158 || 49-7 | 47-3 | 24 ~ Ho.o00 | 2:2 | 9:0 SE by E. 2 0 137 || 51-2 | 48-6 | 2-6 4 1.2 | 1-2 SE. SE by 8 a, 0 134 || 50-3 | 48-0 | 2-3 1-2 | 0-2 BE. tf 6 0 129 || 45-6 | 44-3 | 1-3 0-5 NE. ESE 30 139 || 44-5 | 43.3 | 1-2 0-5 | 0-5 B. ESE? 10 0 140 || 44-7 | 43-5 | 1-2 0-5 | 0-2 NE? 18 0 || 29-220 | 41-8 | 41-0 | 0.8 0-8 | 0-0 WSw. WNW : NNW. 20 0 269 | 43-2) 41-3 | 1-9 | 214 0-0 | 0-5 WSwW. 22 0 315 | 47-5 | 44-6 | 2.9 ree 0-5 | 1-0 Nw. WNW Ape. 50° 30 361 || 48-6 | 44.2 | 4.4 : 0-308 | 2°38 | 2-0 Nw. NW by W 2 0 426 || 46-9 | 43-2 | 3.7 : 18 | 0-8 | NW byN. NW by W. PR Metove iis calbe «alse, = iienceealldap sty eee Sip<0 538 || 44-7 | 40-6 | 41 0-8 | 0-0 10 0 574 | 40-6 | 38-7 | 1-9 0:0 | 0-0 18 0] 29.478 | 38-1. | 37-0 | 1-1 0-0 | 0-0 SW by S 20 0 415 | 43-8 | 42.0 | 18 | 204 0-2 | 0-2 S by W. Sw. 22 0 361 | 46-6 [44.3 | 23 | a1 5 0-8 | 0-5 S by W. SSW. Apa ‘6 10° 10 308 || 49-3 | 47-0 | 2.3 ; 1-0 | 0-5 SSW. SSW. 2 0 265 || 53-0 | 50-3 | 2-7 0008) | 5. oto) |S byw SW. 4 0 236 || 53-1 | 49-4 | 3-7 2-0 | 0-8 Sw. Sw. OBSERVATIONS, Marcu 30—APprRIL 6. 1843. 113 SPECIES OF CLOUDS, &c. h. 20. Scud +~ cumuli on NE. horizon. 22. Cirrous scud +— linear cirri to E. lying N. and S.; clouds very thick to S. 0. Large masses of loose cumuli. 2, Loose scud: cirrous scud + linear cirri to W. pointing N. by E.; cumuli to S. 4, Scud. mo. Id. 8. Loose scud, very low + cirrous scud. 18. Loose scud. 20. Id. +— cirrous haze ; cumulo-strati on horizon. 22. Patches of scud +— a dense mass of cirro-stratus. 0. As before, but more scud. 2. Id. id. 4, Scud; dense cirro-stratus ; raining. 6. Loose scud + loose cumuli to N. and E, 8. Id. + cirrous clouds. 10. Light rain. 8. Cirro-cumulous scud, the lower portion moving quickly; sky milky. 20. Scud : large banks of thick cirrous clouds to W. 22. Masses of scud and loose cumuli. 0. Id. + fine woolly cirri to NE. lying WNW. to ESE. ; cirrous haze to SW. and S. 2. Loose cumuli + woolly and mottled cirri and fine cirro-cumuli mostly lying WNW. to ESE. 4, Masses of loose cumulo-strati: cirrous clouds of all kinds moving slowly. 6. Cumulo-strati to NE., patches moving across the zenith + chiefly linear and woolly cirri. 8. Diffuse cirri to W., woolly cirri, patches of cirro-strati to N. L0. Cirrous clouds and haze near horizon. arg 8. Masses of scud, moving quickly : thick patches of cirro-cumulous and cirro-stratus clouds stationary ; sky 20. Large detached masses of scud, very low and moving quickly : thick woolly cirri moving slowly ; the cirri are of different kinds, lying in strata, in sheets, and becoming haze; the highest probably stationary. 22. Masses of loose cumuli to N., cirrous scud +— thick mass of cirrous clouds, stationary. 0. Scud + cirrous haze to E. 2. Seud + thick mass of cirrous clouds; sky nearly covered with cirrous haze. 4. As before; light rain. ; . Low patches of scud + thick cirrous clouds, stationary. 8. Scud. 0. Raining. 6. Two currents of scud, the lower detached patches, the upper a thick extended mass; a few drops of rain; it has been raining heavily lately. 0. Nearly as before. 2. Scud + cirrous clouds and haze. 0. Masses of loose cumuli + cirrous haze. 2. Id. ad. 5 less scud. 4, Id. id. cirrous haze stationary. 6. Loose scud + large woolly cirro-cumuli, stationary ; loose cumuli and cirro-strati on horizon. 8. Cumuli and cumulo-strati on E. horizon. 0. Clear. \8. Loose seud +— woolly cirri tinged with red ; cumulo-strati to E. 10. Scud + cirro-strati. 2. Id. + thick cirrous clouds; light rain. 10. Id. 2. Id. Id. + cirrous haze; cumuli on horizon. MAG. AND MET. oss. 18438. OF Observer’s Initial. wodduoudd uddddawd | |4eddeq dzuedddow gduedddu » ddeeddden 114 Gottingen Mean Time of Observation. a. Apr. 76 pr. 7) Apr. 8 Apr. 9 Apr. 10 Apr. 11 Apr. 12 ooo oococococ coooocococoo$co o ooococe BaRo- METER Corrected. in. 29-203 176 164 29-141 29-121 29-094 29-049 29-003 28:978 28-970 28-976 28-979 28-988 28-977 28-980 29-010 29-063 29-165 29-268 29-350 29-411 29-650 662 666 676 666 662 688 712 729 29-731 740 774 787 778 784 776 771 780 29-751 745 722 670 584 496 450 512 557 29-663 DatLy METEOROLOGICAL THERMOMETERS. Wet. Diff. 46-2 2-9 44-7 1-6 43-0 2-6 39-8 1-8 43-2 1-7 48-0 0:3 46-0 4.2 48-4 3-8 47-5 2-4 46-0 4:7 43-6 1-2 39-2 36-3 40-5 aN HN fap) eS Nh) ee Lae mS OF Ne WAIN O Bb 27-4 | 2.2 30-6 | 3-1 33-0 | 5-7 33-4 | 6-0 34.6 | 5.2 32-6 | 6-7 32-7 | 2.9 31-6 | 2.9 29-8 | 3-5 26-4 | 2.6 30-0 | 4-0 32-8 | 3.2 34-1 | 4-9 34:8 | 63 34.6 | 4-4 33.3) | 3.4 30-0 | 4-0 29-7 | 21 26-0 | 1-0 29-4 | 1-9 32.2 | 4.2 34-4 | 5-5 39-3 | 5-9 38-2 | 6-2 36-4 | 0-8 32-3 | 0-7 31-0 | 2-5 31-4 | 1-2 Max. and Min. 55:1 39:3 Wan gr to or co 48:3 34:3 43-9 28-3 42-0 27-2 44:3 23:8 RAIN GAUGE. 0-000 0-144 0-010 0-002 0-000 ANEMOMETER. Pressure. Direction of Max. | Pres. ee Ibs. lbs. 0-8 | 0-2 0-2 | 0-0 0-0 | 0-0 0:8 | 0-0 1-5 0-8 SW by W 1-2 | 0-5 SW. 1:0 | 0-5 SW by W 1-2) | 0-2 SW. 0-2 | 0-0 1:0 | 0:5 SW by W. 0-5 | 0-0 0-0 | 0-0 0-0 | 0-0 0-2 | 0-0 0:0 | 0-0 0-2 | 0-2 NNE. 1-2 | 0-8 NNE. 2:0 | 0-8 NNE. 22-2 NE. 2-2 | 0:8 NNE. 1:0 | 0-0 0-5 1:0 ; 0-0 0-0 | 0-0 1:0 1:0 NW by N 1:5 1-0 NW. 1-5 0-2 WNW. 2:5 0-8 NW by N 2-8 | 0-5 NG 0-5 0-2 0-5 0-5 NW by N. 1-2 1-0 NW. 122) a2 NW. 9... | 0-8 NNW 1-7 1-0 N by W 1:0. 80%5 NNW. 3-2 | 0-2 NW by N? 0-8 | 0-0 1-8 | 0-0 0-0 | 0-0 0:0 | 0-0 0-2 | 0-2 WNW. 0-8 0-8 W by S 1-2 | 0-8 W byS 3.0) 4 3-0 Ww. 5-0 3-0 W. 5-5 | 3:8 WNW. 3.0 1-5 N. 2-2 | 0-8 | Nby W 2-5 | 0-5 N by W Clouds moving from — W by S. WSW. WAW. SW by W. W by S: WbyS. W by S: W by 8. WSW. W by N. WSw. WSwW. N by E. N by E. N by E. N by E. NW ? NNW? NW by N. NW by N. NW by N: WNW? N by W. N by W. NTRNE N. N by W: NW by W. Ww. NW by W. NNW. NNW. WNW. OBSERVATIONS, APRIL 6—12. 1843. 115 s SPECIES OF CLOUDS, &c. Fal SE Qa io) . Thick and ragged masses of scud +~ cirrous haze, &e. . Loose scud; thick mass of cirrous clouds; red to W.; a few drops of rain. Scud. . A long mass of scud on S. and SE. horizon, moving slowly. . Masses of scud and loose cumulo-strati + linear, woolly and reticulated cirri, with cirro-strati. . Seud. . Scud + woolly cirri to W. Homogeneous seud ; light rain. . Scud: woolly cirri. Id.: id. . Scud. . Clear; small patches of scud to N. and E. Sheets of woolly cirri. . Scud ; light rain. Id. Id.; raining. [woolly cirri to W. . Woolly cirrous scud, moving slowly + loose cumuli to W. and S.; small detached cumuli to N. and I. ; 4, Large masses of scud. . Rain. . Scud + cirrous clouds to N. . Cirro-cumulous scud ; about 10™ ago it was acted on by various currents. = A . . Patches of cumuli + cumulo-strati on E. horizon ; woolly cirri and cirrous haze over the sky. Patches of scud ; cumuli on E. horizon ; cirrous haze covers the sky. Seud + thick cirrous haze. , Loose-edged cumuli. . Large masses of black scud, cumuli and nimbi, falling in snow all round: cirrous clouds. . Loose-edged cumuli; snow falling to N. . Scud + large masses of cumuli to Ki. and 8.; a shower of snow. _ Cumuli and cumulo-strati on horizon, falling i in showers of snow (?) to SW. . Cumuli to SE. . Clear, except a bank of cirro-stratus and loose cumuli to E. Cumulo-strati on N. and E. horizon. Scud, moving quickly : woolly cirri, slowly. . Cumuli. . Seud : cumuli. Scud and loose cumuli +— large masses of cumuli to E. Cirrous scud +~ large ranges of cumuli to N. and H.; passing showers of snow. Thick cumuli to NW. and on S. horizon ; cirro- strati to S. Scud. Cirrous scud +- cumulo-strati on E. horizon. [NE. 2. Patches of cirrous scud ; Hl, £ fine linear cirri lying E. by N. to W. by S.; cirrous haze to Scud to W. and NW. +-a long line of patches of cirrous-edged cumuli to SSE., feathered and assuming a considerable likeness to the cymoid cirri; sky nearly covered with thick cirrous haze. , Patches of scud + cirrous haze. As before, but more scud. | Detached masses of scud + dense mass of cirrous clouds and haze. | Rain. Several heavy showers of snow since last observation. Masses of scud. Scud + loose ragged cumuli on horizon. Sdduddduu ddunddduu deo | Zwessdnnw 26 wos snnwss Hos snnnss 116 Gottingen Mean Time of Observation. d,s Apr. 12 20 22 Apr. 13 0 2 4 6 a oo oo (oS 0 0 0 0 0 0 0 0 0 0 0 0 0 o coooo cooosoooococo ocooceceoeoo SCOSCOCOC OB BaRo- METER Corrected. | ‘in. 29-699 DAILY METEOROLOGICAL THERMOMETERS. Max. Diff. and Min. Wet. RAIN GAUGE. ANEMOMETER. Pressure. Pres. Direction of Wind. N by W. NNW. N. N by W? NW by N? Ww. W by 8? WSW. W by S. W by S. W by 8. W by 8. NW by W. W by N. W by 8. SW by W? SW by 8. WSwW. SW by W. SW. SW. SW. Clouds moving from W. W by N: NW. WNw. WNW: WNw. NW by N. NW. NW : WNW. SW. NW :S by W. oF ‘iw ons . SO & PP by SPL em Sop So ). 5 ) | | . . OBSERVATIONS, APRIL 12—19. 1843. SPECIES OF CLOUDS, &c. Cirrous scud + thick scud to E.; cirrous clouds to W.; occasional showers of snow. Two currents of cirrous scud. Id. : Loose-edged cumuli + linear and curled cirri radiating from N.; sky to W., covered with cirrous haze. Loose cumuli. Masses of cirrous scud + thick cirrous haze over the sky; half of a solar halo seen, radius about 23°; the space within the halo is much darker than without it, being dark gray; the edge of the halo is brownish and passes into the bluish-white of the cirrous haze without. Scud + cirrous haze over the sky. Dense cirro-stratus ; a few drops of rain. Scud + cirro-strati to NE. lying SSE. to NNW. Loose seud, quickly: thick cirrous clouds and haze covering all the sky + cumulo-strati on NE. horizon. Detached masses of scud on horizon + thick linear cirri over the sky, generally becoming haze, radiating from NW. ; cirro-cumuli to S. Nearly as before; the cirri radiating more distinctly than before, and from WNW., intersected at right angles near the zenith by fine lines of cirri. Detached masses of cumuli and scud round horizon: long strips of flame-like cirri rising from woolly cirri, pointing from WNW.; sheets of cirri to SW. appear superimposed upon each other. Cirrous clouds ; rather large cirro-cumuli lying in rows towards SSE. with sheets of woolly cirri interspersed. Thick cirrous clouds ; cirro-cumuli to W.; cirro-strati and linear cirri to E. lying NNW. to SSE. ; patches of scud on N. and S. horizon. Scud: cirro-cumuli, in sheets radiating from NW.; the sky very stormy like. Nearly as before. Scud + masses of loose cumuli on SE. horizon; cirro-strati on E. horizon. Id. + large woolly cirro-cumuli; cirro-strati and cumulo-strati to E. Thick scud +— cirro-cumuli and sheets of cirri. Scud, moving quickly: cirro-cumuli, woolly cirri, &., slowly. Scud. Scud +~ linear cirri, pointing from WNW. Id. Id. +— cirro-cumuli; clouds red to W. Id. Thick cirro-cumulous scud, the patches of various colours ; motion very small. As before. Patches of scud and loose cumuli on horizon: cirro-cumulous scud. Loose cumuli, motion scarcely perceptible. Cirrous scud, moving very slowly + loose cumuli near horizon. Cumuli and cirrous scud. Cirro-cumulous scud (as throughout the day) ; masses of cumuli on horizon to SE. Cirro-cumulous scud. Id. fae lying in strata to N. + cirrous haze and rippled cirri. Id. Seud + haze. Detached masses of scud +— patches of cirrous clouds to W.; sky nearly covered with cirrous haze. Scud +— woolly cirri and cirrous haze. Id. +— cirrous clouds and haze. Id. + cumulo-strati on E. and NE. horizon. Loose scud, very low, moving quickly +— masses of cirrous clouds; cirro-strati to NW. Scud. Scud + irregular cirro-cumuli. Id., low and moving quickly : large loose cirro-cumuli, slowly +— finer cirro-cumuli and linear cirri. Seud + cirrous clouds, principally large cirro-cumuli with fine linear and woolly cirri; cumulo-strati to E. Loose-edged cumuli in two currents +- cumulo-strati on horizon; fine linear and woolly cirri and cirrous haze. In a short time the great mass of the scud and cumuli are from W. by S.: sea-gulls flying very high. bserver’s Initial tuac. AND MET. oss. 1848. a —_ — ~J wwdswwwds weds dosed woe dows iS q abo 444eeasun edqundgaduw 118 Gottingen Mean Time of Observation. d. | Apr. 19 Apr. 20 0 Apr. 21 0 Apr. 22 Apr. 23 0 Apr. 24 0 Apr. 25 o Sono SiS OC CS SS Seo OozOlOororOio iy BaRo- METER Corrected. 727 684 29-327 29-229 DAILy METEOROLOGICAL THERMOMETERS. Dey. | Web. [ye |e 61-6 | 524 | 9-2 61-3 | 51-3 | 10-0 57-7 | 51-8 | 5-9 53-7 | 50-1 | 3-6 49-0 | 46-7 | 2.3 36-3 | 36-0 | 0:3 44.0 | 42-2 | 1-8 53-3 | 47-0 | 6-3 ee 55-8 | 49-0 | 6-8 55-0 | 50-0 | 5-0 52-8 | 48-1 | 4.7 51-3 | 47-5 | 3-8 49-4 | 46-9 | 2.5 50-0 | 47-7 | 23 54-2 | 50-9 | 33 oe 55-7 | 50-3 | 5-4 58-0 | 51-6 | 6-4 57-0 | 50-0 | 7-0 55-4 | 49-5 | 5-9 52:0 | 49-0 | 3-0 49-1 | 46-9 | 2.2 47-7 | 46-3 | 1-4 48-7 | 47-4 | 1:3 50-2 | 48.0 | 22 | 2e% 50-0 | 48-8 | 1-2 51-0 | 48-9 | 21 49-3 | 47-6 | 1-7 49-0 | 47-3 | 1-7 46-8 | 46-3 | 0-5 45-0 | 43-8 | 1-2 52-2 40-9 35-3 | 34-3 | 1-0 39-5 | 38-2 | 1-3 50-0 | 45-3 | 4-7 ei 53-9 | 47-0 | 6-9 56-4 | 48-6 | 7-8 55-8 | 47-9 | 7-9 51-6 | 46-7 | 4-9 47-8 | 44-1 | 3-7 46-7 | 43-3 | 3-4 43-0 | 41-0 | 2-0 41-2 | 40-0 | 1-2 408 | 39.2 | 16 | 37° 44-0 | 42-4 | 1-6 50-8 | 46-4 | 4.4 51-6 | 46-0 | 5-6 50-0 | 44-0 | 6-0 45-3 | 40-8 | 4-5 41-4 | 38-0 | 3-4 37-0 | 35-0 | 2.0 RAIN GAUGE. 0-000 0-000 0-172 0-468 0-067 0-127 ANEMOMETER. Pressure. Tinecuontok Clouds moving from Max. | Pres. Wand: Ibs. lbs. 0-2 | 0.0 S by W 0-0 0-0 S by W : ESE 0-2 | 0-0 0-0 | 0-0 S by W 0-0 | 0-0 0-0 | 0-0 SW. 0:0 | 0-0 S? 0-5 0-5 ENE. 0-8 | 0-2 B by N. SE by 8 0-2 | 0.2 E by S. SE by 8 0-5 | 0-0 SW. 0-2 0-0 SSW. 0-0 0-0 SSW ? 0-0 | 0-0 is Os SW. SW by W 0-5 | 0-0 SW. O55 0:2 SW. 8. O81 05 SW. S by W 0:5 0:0 SSW ? 0-0 | 0-0 8? 0:0 | 0-0 0-2 | 0-2 SE. 0-2 | 0-2 SE. SbyE 0-5 | 0-0 SbyE 0-0 0-0 S by E. 0-0 | 0-0 SW ?: SE. 0-2 0-0 SE? 0-0 0-0 NW by N: SSE. 0-0 | 0-0 0:0 | 0-0 0-0 1:5 ane S by E. 0:0 | 0-0 0:8 | 0-8 S by E. SSE. 1-5 1-0 Ss. S by W 9.2 | 2.0 S. S by W 9.0 1-0 S by E. S by W 1:0 | 0-8 Ss. S by W 1-5 | 0-8 Ss. S by W. 3-0 1:8 S by E. 3-8 | 4.0 8. 8. BEOe| 30 Ss. Ss. 4-8 | 2.2 Ss SSW : Sw? Oo |e SW. 1EOM ell-50 eN Wabi. W:Sby E. 1-8 1-0 WNW. NW. 1-8 1-2 NW. NW. 1-2 | 0-2 WSW ? 0-8 | 0-5 WSwW. 0-5 | 0-0 NNW ? = one el ce a ee OBSERVATIONS, APRIL 19—25. 1843. 119 SPECIES oF CLOUDS, &e. : a an ) h. 2. Scud and loose cumuli +- cumuli and cumulo-strati on horizon ; a few drops of rain. B 4. Scud and loose cumuli: cumuli +— hazy on E. horizon. B 6. Nearly as before. B 8. Scud and loose cumuli; thin fog; sky red to W. WwW 0. Scud. Ww 8. Loose cirro-cumuli and woolly cirri; thick fog. B 0. Cirrous clouds, woolly cirri, &c. B 12. Sky covered with cirrous clouds and haze; cumulo-strati and cirro-strati. W 0. Scud + cirrous clouds; cumulo-strati to 8.; a few drops of rain. W 2. Id. + thick mass of cirrous clouds; ranges of cumulo-strati to SE. and 8. WwW 4, Id. + cirro-stratus to E.; cirrous clouds to NE. H 6. Id. + large cirro-cumuli. Ww @. Id. Ww ® Id. WwW 8. 0. 2. Id. + woolly cirri; ranges of cumuli to S. and E. Ww 0. Scud and loose cumuli; sky to E. WwW 4 Id. ; id.; cirrous clouds and haze. WwW . Loose cumuli + woolly, mottled and curled cirri and cirrous haze. WwW 6. Cirro-cumulous scud + cirrous clouds. Ww 8. 2 motion scarcely perceptible + cirro-strati to NE. lying SSE. to NNW. WwW 0. Scud ; dark. Ww 8. Sky very milky ; some patches of scud ; thick cirrous haze ; light rain. W 0. Scud ; light rain. WwW m. Id.; id. B = Id.; id. B 2. Id., moving very slowly ; a dark mass of scud rising like a curtain from SW. ; heavy rain immediately. WwW . Cirro-cumulous scud + loose scud on horizon ; a few drops of rain. WwW 6. Patches of scud : scud ; light rain. Ww 8. Raining since last observation. WwW 0. Scud. Ww 3. Scud ; hoar-frost. Ww J. Masses of scud to SW. Ww 2. Loose-edged cumuli +~- cumulo-strati on horizon. B 9. Cumuli and cumulo-strati. B 2. Id. W . Cumuli, scud, &c. B mm Id., id.; afew heavy drops of rain lately from a dark mass of clouds. WwW 3. Scud and loose cumuli +~ cirrous haze, Ww ), Homogeneous. Ww 5. Loose scud, moving quickly +~ thick cirrous haze above ; light rain. Ww p. Scud ; rain. Ww 2. Two currents of scud + cirrous haze ; light rain. B D. Scud. B 2. Scud and loose cumuli: woolly cirri; smart hail shower lately. B it Id. +— cirrous clouds and haze above. WwW 5. Thin scud +~ woolly and curled cirri; cumulo-strati on horizon. [red to WNW. || W 3. Cirrous clouds, principally woolly and diffuse cirri, becoming haze; masses of cumulito E.in haze; clouds || W >. Masses of cirrous clouds, lying NNW. to SSE. ; thick cirrous haze to E. Ww 3. Masses of cirrous scud +~- woolly cirri; thick mass of cirrous clouds and haze on E. horizon. WwW 120 Gottingen Mean Time of Observation. Apr. 27 0 Apr. 28 Apr. 29 0 Apr. 30 0 May 1 0 cooocococoso i) SSS ore) (OS SoS eS ors BaRo- METER Corrected. ——_———— | — | — | | | THERMOMETERS, Wet Diff. 37-0 2-9 39-2 5-0 41-6 5-6 39-0 4-8 40-4 3:6 38-6 2-2 38-2 2-0 35:5 1-5 33-3 1-0 36-3 1-7 44-0 3-0 45-4 5:6 48-2 6:8 47-3 7-4 47-0 6-9 45-0 3-9 43-3 2-6 41-5 2-3 42-1 2-7 43-7 2-3 44-8 2-0 45-2 1-6 43-4 0-9 43-1 1-5 41-7 0-9 40-6 1-0 34-2 0-4 41-3 0-8 45-9 2-1 46:8 4:5 47-8 5-4 46-6 5-4 44-8 2-4 44-0 1-0 44-0 0:3 34-4 0-4 42.9 1-1 49-5 3-4 50-0 7:0 50-7 9-3 50-0 8-6 49.0 7-0 47-7 3-5 44-2 1-1 36-0 0:7 40-2 1:6 45:0 4-7 47-8 5-0 48-7 3-9 DAILy METEOROLOGICAL Max. and Min. 50-1 32:5 57-2 43-2 49-7 33-4 54-0 42:3 56-1 32-0 60-5 35°3 RaIn GAUGE. 0-012 0-015 0-104 0-297 0-000 0-000 0-000 ANEMOMETER. a Pressure. | Direction of || Clouds moving from ‘ Max. | Pres. ad: Cle lbs. lbs. 0-8 | 0-5 iW W. 0-8 | 0-2 W. WNW. 0-5 0-8 W. WSw. 0-5 | 0-2 W. SSW. 0-2 0-0 SE? 0-8 0-8 NE NE by E. 0-8 | 0-0 NNE. 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 SSW. 8. 0-5 | 0-8 S by E Ss. 1-2 | 1-0 8. 2.2 1-1 SSW. Ss. 1-8 ife83 SSW. 8. ted 0-6 SSW. $? 0-9 | 0-1 s. 18 | 0-7 8. SSW. lS OS7 S by E. SSW. 1-8 i708 S by E. S by W 1:3 | 0-9 S by E S by W. 1:3 | 0-5 SSW. S by W 0-7 | 0-0 S by W. 0:07) 00 SSW. 0-0 | 0-0 0-0 | 0-0 W. 0-2 | 0-0 0-0 | 0-0 Ww? 0-0 | 0-0 S by E. 0-1 0-0 E by N. 0-5 | 0:5 NE. NNE, 0-7 | 0-5 NE by E. - 0-5 | 0-5 NE. NNE: Eby S. 0-4 | 0-1 ENE? 0-4 | 0-0 1-0 1:5 | 0-0 ENE? 0:0 | 0-0 E. 0-1 | 0-0 0-7 | 0-7 ENE. ENE, 0-7 | 0-7 ENE. 0:3 | 0-7 NE by N. 0-8 | 0-5 NE by N. E?> 0-5 | 0-0 e 0-0 | 0-0 0:0 | 0-0 0:0 | 0-0 ENE? 0-0 | 0-0 0-4 | 0-4 ENE. 0-6 | 0-5 E by N. NE? OBSERVATIONS, APRIL 25—May 2. 1843. 121 tw tw SODRNON SS? SNOM SHRRNONSO “SOOPRNOD ¢ Js 0. 2. J. Z. . D. it Da. J. 2 B. Ve 2 y SPECIES OF CLOUDS, &. Patches of cirrous scud + cirrous clouds and haze on E. horizon; cumuli on 8. and SE, horizon. Cirrous-edged cumuli and cumulo-strati. Many cumuli + nimbi to E. and SE. Seud and loose-edged cumuli; a smart shower of hail lately. Seud + cumuli near horizon; woolly cirri to SE. ; most of the sky covered with a thick milky haze. Seud + thick cirrous haze ; cumuli near horizon ; light rain. Id. + id. ; sky to NW. Seud ? Clear ; cirro-strati on 8. and E. horizon. Cirro-cumulous scud to E. Thermometer in the sun 77°. Loose-edged cumuli. Id. Id. Loose cumuli +— cirrous clouds to W. [on horizon. Scud and loose-edged cumuli +- mottled cirri and cirro-cumuli to W.; cumulo-strati to E. and SE.; haze Cirro-cumulous scud +~ cirrous haze; sky stormy-like. Nearly. as at 84, more scud. Scud + sky covered with a thick milky mass of clouds; a few drops of rain. Id. +— thick cirrous haze above. Id. ; light rain. Td. id. Id. ; id. Id.; id. Scud and loose cumuli + patches of cirri to S.; cirro-strati to NE. Cirro-strati, cirro-cumuli, and mottled cirri. Cirro-cumulous scud, with which the sky was suddenly covered about half an hour ago. Masses of mottled and diffuse cirri and cirro-cumuli; thick mass of cirro-strati and haze near the horizon. May 25 0 May 26 0 May 27 0 = Sy Sq bo co Oo So — (ee) SSS sees Soaooeeee® SSeeaegeeeee Seeeaeoeeee SGeoeoeeeesS Seqgaqqge! BaRo- METER Corrected. DAILy METEOROLOGICAL THERMOMETERS. Dry. | Wet. | Dig. |, Mar 45.6 | 45-0 | 0-6 46-3 | 45-9 | 0-4 46:8 | 46-2 | 0-6 46-3 | 46-0 | 0-3 45-2 | 45.0 | 0-2 44.7 | 44-5 | 0-2 45-3 | 45-2 | O-1 45-6 | 45-3 | 0-3 46-5 | 460 | 0-5 | 47) 48.2 | 47-8 | 0.4 47-9 | 47-3 | 0-6 47.0 | 46-8 | 0-2 47.0 | 46-8 | 0-2 47.2 | 47-0 | 0-2 47-0 | 46-8 | 0-2 46-3 | 46-0 | 0-3 46-7 | 46-2 | 0-5 47-0 | 46-3 | 0-7 ae 47-8 | 46-8 | 1-0 48.2 | 47.0 | 1.2 47-9 | 45-1 | 2-8 47-3 | 44.7 | 2-6 45-3 | 44.0 | 1.3 44.6 | 44.2 | 0-4 45-7 | 45-5 | 0-2 47-3 | 47-1 | 0.2 49.3 | 49.0 | 03 | 3)°° 51-0 | 50-0 | 1-0 51-3 | 50-0 | 1-3 50-7 | 49-9 | 0-8 51-3 | 49-7 | 1-6 50-7 | 48-3 | 24 48-3 | 46-3 | 2.0 51-7 | 49.4 | 23 54-2 | 51-2 | 3-0 Si? |bs3 | aa ie 57-6 | 53-6 | 4.0 56-2 | 52-6 | 3-6 57-0 | 53-0 | 40 54-2 | 50-1 | 4.1 50-9 | 48.0 | 2.9 49-8 | 47-3 | 2.5 47-3 | 46-5 | 0-8 50-0 | 47-6 | 24 |. 50-8 | 47-7 | 31 [607 54-7 | 49-7 | 5.0 53-0 | 49.3 | 3-7 54.2) 53-1 | 1-1 54-2 | 50-1 | 41 51-0 | 49.3 | 1.7 49-0 | 47-9 | 1-1 56-9 42-9 RAIN GAUGE, 0:039 0-133 0-390 0-149 0-064 ANEMOMETER. Pressnre. Direction of Max. | Pres. Wind. Tbs. Tbs. 0-8 0-5 NE. 0-8 0-5 NE. 0-6 0-6 NE. 0-5 0:3 NE. 0-5 0-2 NE. 0-2 0-1 NE. 0-2 | 0-0 0-6 0-1 NE? 0-5 | 0-2 NE by E 0-4 0-2 NE. 0-9 0-8 NE by E 1-0 0-2 NE. 0-4 0-2 NE. 0-2 0-1 NE. 0-2 | 0-2 NE by N 0-7 | 0-2 ENE. 0-7 | 0-4 | NEbyE 1-2 0-6 ENE. 0-6 0-7 NE by E 1-1 1-3 ENE. 1-6 1:3 NE. 2-0 1-9 NE. 2-8 1:3 NE. 1-5 0-6 NE. 1-6 | 0-0 0-0 0-0 0-0 0-0 0-3 0-6 SW. 0-8 | 0-7 SW by 8. 1-0 0-2 SW by S. 0-4 0-5 SW by 8. 0-7 0-4 SW by S. 0-2 0-1 SW by 8. 0-3 0-0 1-1 0-4 SW by S. 1-0 0-7 SW by S. 1-6 0-6 SW by S 1-3 0-8 SSW. 0-8 0-8 SW. 1-6 1-3 SW. 1-2 | 0-4 SW. 0-7 0:3 SW. 0-2 | 0-0 0-4 | 0:3 WSW. 0-2 | 0-0 0-4 | 0-1 WSwW. 0-7 | 0-2 SW. 0-6 0-0 0:5 0-2 SW by W. 0:3 | 0-0 0-0 | 0-0 3-0 Clouds moving from NE by E. NE by E. ENE. OBSERVATIONS, May 22—28. 1843. 129 SPECIES OF CLOUDS, &c. 2 = 2 c oh. 0. Scud; rain. B ee eld.: id. B eid... «id. Ww 6. Scotch mist. WwW 8. ; WwW 10. Id. WwW 18. Thick Scotch mist. WwW 0. Id. NW. 2. Homogeneous seud ; light drizzle. B 0. s id. B 2. iidey id. B 4, Id. ; rain. WwW 6. Scotch mist. WwW 8. Scud; Scotch mist; very thick to N. and W.; clearing to E. and SE. B 0. Scotch mist. B 8. Homogeneous scud ; mist. WwW 0. Td; id. WwW 2. Scud, breaking ; mist. B 0. Id.; rain. B 9. Id.; mist. 4. Id. + cirrous clouds and haze. WwW 6. Id. + id. WwW 8. Loose scud ; light rain. Ww 0. Id; id. Ww 8. Rain Ww 0. Id. Ww 2. Thin scud, falling in rain + dense watery-like cirro-stratus. B 0. Id., id. = . id. B 2 Id., id. ao id. B 4 Id., id. _ id.; breaking to S. Ww 6. Id., +— dense cirro-stratus and haze; sky to SH. Ww 8. Chiefly woolly cirri and cirrous haze + scud to NW..; cirro-strati on E. horizon ; sky to E. B 0. Nearly as before; strips of feathered cirri pointing from SW. to NE. B 8. Masses of scud and cumuli to SW.; cumulo-strati on S. horizon. WwW 20. Scud : cirrous scud +~ cirro-strati and cumuli to S. and E. Vg 2. Loose-edged cumuli: cirrous clouds, moving slower +—- cumulo-strati on horizon. B 0. Loose cumuli + cirrous clouds ; a shower lately; rain to SW. B 2 Id. _ Idi: slight shower. B 4. Scud and loose-edged cumuli +— cirro-cumulous clouds, stationary. WwW 6. Scud and loose cumuli +- masses of cirrous clouds above. Ww 8. Sky covered with a sort of grey cirrous mass, falling in a slight shower; scud on horizon. B 0. Cirro-cumulous scud. B 8. Scud + cirro-strati all round ; light drizzle. D 0. Id. + cirro-strati on S. and E. horizon. WwW 2. Id. + id. NE. horizon. WwW 0. Id. B mer id. H 4, Id.; a few drops of rain. B /6. Id. + cirrous clouds and haze to E. D 18. Id. WwW 10. Light rain. W MAG. AND MET. oss. 1843. DKS 130 Daity METEOROLOGICAL THERMOMETERS. ANEMOMETER, Gottingen ranean Mean Time BROS Pressure bs METER ‘ Max. re. | Direction of Corrected. 3 Wet. * Jand Min Wind ‘ Pres. r Clouds moving from Observation. in. e 5 S. é 29-679 1 370 Tote 1h 2) | 0: SW : W by N. oF dy. ht May 28 18 693 . 39-0 . . : SSW. 41-2 ( May 29 co oo oo So Sober ors W. Various, Various : W by 8, W 2 = W byS. ESE. 8. SSW. NE by E. NH by N. NE by N. NNE. NE by N. NE. N by E. N by E. NNE. : : NE by N. 45-2 . : 4 : NE by N. OSOSaSaSee SOoooeooeeeaoe OoeoeeoQeeeo Seoeoeoeeos eeee May 31475. New silk put upon the wet bulb thermometer. June 24 22h, The maximum temperature given is rather doubtful. The maximum at one time was observed to be 61°5. If 66° an accurate indicate, the leap must have been sudden. » OBSERVATIONS, MAY 28—JuUNzE 3. 1843. SPECIES OF CLOUDS, &c. 3. Patches of scud moving quickly: scud + linear cirri; line of seud creeping along N. horizon. Snow seen on some of the surrounding hills, and lying on the ground an hour ago. . Scud and loose cumuli. Id Id. 4 Id. ; passing showers. . Seud; raining, heavy shower of hail lately ; sky to N. . Low masses of scud and cumuli: cirrous haze and cirro-cumuli + long ranges of cumuli and nimbi, of great height, to E.; raining heavily to E. and S.; sky electric looking. Scud + ranges of cumulo- strati to N.; patches of mottled cirri. Loose cumuli + cirrous clouds. . Thick cirro-cumulous scud ; sky to N. 4 Id., more dense +~ scud and cumuli on N. horizon; sky getting more to NE. Scud and loose cumuli + cirrous clouds to NE. + thin cirri to E. + linear cirri to NE., lying WNW. to ESE.; raining heavily toS. At227™ black, loose, ragged scud began to move from N,, W., and E., and the wind began to blow 0-7 lb. from SSW. . Scud moving from various directions, chiefly from SW. by 8., and also from N. by E.; rain. Patches of scud moving from E., NE., and W. : cirto-cumulous scud + cumulo-sirati to S.; rain. 8, Patches of scud : cirro-cumulous scud + thick cirrous haze; solar halo. . Scud ; light rain. Id.; rain. Id.; heavy rain. . Homogeneous ; light drizzle. . Id. ; id. . Scud ; light rain. Id. ; id. Id.; id. Id. ; id. ; id. id. id. id. id. id. id. id. id. id. Scud, nearly homogeneous ; light mist ; broken a little to E. and ESE. Scud + cirrous clouds. Id. Id. [up, moving from NE. Homogeneous scud ; half an hour ago the clouds were moving from S., the wind changed suddenly to NNE., and a lower stratum of scud sprung Homogeneous scud ; mist; light rain just commenced. L Id.; id. ; id. 3. Scud; light rain. Id. ; id. 3. Scud + an opening to NNE. where cirrous clouds are seen. Id. Id. + cirro-strati on NNE. horizon. ; light rain. 131 Obsérver’s Initial. | waddww dduwddduw dgdugdgun ggdgugssuw 440s 132 Gottingen Mean Time of Observation. d. June 3 June 4 0 June 5 O i June 6 O June 7 0O i June 8 O i June 9 O oOo: | So SSS S.O:-O 6 SO StoiS Cro Saori Ole) 1S SS Se Sara) Se ae eon Conc neo | Coe Goro Cec Coma E cy BaRo- METER Corrected. |} Dry. 29-313 || 44:3 360 || 43-7 396 || 43-9 29-660 || 43-7 682 || 43-9 690 || 44-0 693 || 43-1 694 43-4 687 || 44-1 682 || 42-6 695 || 42-2 691 || 42-1 29-688 || 43-7 700 || 46-6 711 || 48-0 711 || 49-2 714 || 49-5 706 || 52-4 690 || 51-9 680 || 51-4 667 || 48-2 29-571 || 47-8 559 || 51-4 534 || 52-7 502 || 53-4 457 || 57-0 419 || 56-2 359 || 56-3 299 || 55-4 225 || 53-3 28-912 || 53-3 881 || 53-8 854 || 56-3 836 || 55-0 809 || 58-0 789 || 58-0 776 || 53:6 747 || 54-0 716 || 52-2 28-618 || 50-7 28-656 || 53-0 28-726 || 56-7 28-804 || 53-3 28-860 || 55-2 28-915 || 58-2 28-966 || 54-6 29-019 || 52-9 29-078 || 52-0 29-248 || 51-2 Byl6) || &)237/ 370 || 57-6 June 74. Several swallows found dead, either from the cold or the want of food. The River Tweed about 5 feet above its mean height. June 94, THERMOMETERS. ANEMOMETER. Max eae Pressure. Direction of Wet. Diff. and Min. M Wind. ax. | Pres. © M oO in, Tbs. Ibs. 43-2 1-1 1-4 | 0:3 NE by N. 42-6 1-1 1-2 | 0-5 NE. 43:3 0-6 0-9 | 0-7 NE by N. 48-0 41-9 0-091 || 1-2 41-8 1-9 1:8 | 0-5 NE. 40-8 3-1 48-8 1-1 | 0-6 NE by E. 40-5 3-5 42.7 1-5 | 0-7 NE. 41-5 | 1-6 0-092 | 1:2 | 07 NE. 41-8 | 1-6 1-2 | 0-6 | NEbyN. 41-7 2:4 15 | 0-7 NE. 41-3 1-3 0-8 | 0-8 NE by N. 41-6 | 0-6 0-9 | 0-2 | NEbyN. 41-3 0-8 0-5 | 0-4 NNE. 43-0 0:7 0-6 | 0-0 45-0 1-6 43-9 0-4 | 0-3 NNE. 46-4 1-6 41-3 0-5 | 0-4 NNE. 47-3 1-9 0-170 0-4 | 0-2 NE by N. 47-0 2-5 0-6 | 0-2 N. 48-9 3-5 0-2 | 0-0 48:6 3-3 0:0 | 0-0 48-5 2-9 0-1 | 0-1 N by W. 46-4 1:8 0:0 | 0-0 46-0 1-8 0:0 | 0-0 47:3 4-1 59.3 0-0 | 0-0 46-8 5-9 45-5 0-6 | 0-5 WSW 47-2 6-2 0-006 0-3 | 0-5 51-0 6-0 0:3 | 0-6 S by W. 52-8 3-4 0-6 | 0-2 SW by 8. 53-9 2.4 0-3 | 0-0 51-9 | 3-5 0:4 | 0-4 S by E. 50:8 2-5 1-1 | 0-5 SSE. 50-2 3-1 2-2 1-2 SSE. 50-0 3-8 59.0 2-6 | le2 8. BIS (8 | os 3-6 | 1-4 | Sby W. 50-8 4.2 0-168 9.8 | 3.4 SW by S. 52-9 5-1 3-4 | 1-8 S by W. 53-0 5-0 3-3 | 2:4 | Sby W.v. 50-1 3-5 2:8 | 0-4 S by W 49-2 4-8 2-4 | 0-7 Sby E 48-7 3-5 2:0 | 2-8 SSE. 49.2 1-5 2-7 | 0-4 S by E 51-9 1-1 59.2 0-3 | 0-0 52-0 4-7 49-1 0-7 | 0-5 W by S 48-8 4-5 0-118 3) | 13 W byS 50-2 5-0 1-9 | 16 | WbyS.v. 51-4 6:8 2-4 | 1:3 WSW 50-7 3-9 2-9 | 1-2 WSW. v. 49-6 3-3 2-1 | 0-6 SW by W. 48-7 3-3 1:9 | 1-6 W.v 48-3 2-9 1:9 | 0-8 Ww. 49-5 32 1-0 | 0-6 W. v. 57-0 51:8 5:8 49-6 1:0 | 1-2 DAILY METEOROLOGICAL NW by N.v. || W: NW by W: NNW. fe Clouds moving from NNE. NNE. NNE. NE. NE. NE? W:NW. NW OBSERVATIONS, JUNE 3—9. 1843. 133 A Hoe SPECIES OF CLOUDS, &c. E s PS 5 h. 3. Scud ; smart showers. B 3. Id.; light rain. WwW m Id. Ww Id.; a few drops of rain. Id | Id.; light rain. Id.; id. Id.; rain p id. . Rain. . Iad . Homogeneous scud. . Scud. ». Id.; a few drops of rain. = Id.; id., occasionally ; clouds breaking. # Id. , Scud and loose cumuli ; sky to N. it di..s id. E. }. Cirro-cumulous scud, moving very slowly + cumuli on N. horizon; cirro-strati to E. lb Id. id. id. id. ). Cirro-cumulo-strati, stationary ; cumulo-strati and cirro-strati on E. horizon. Id. [very lately. . Cirro-cumulo-strati, moving slowly +~ cirro-strati to N. and E.; black to S.; the wind commenced blowing ), Cirrous scud and loose cumuli. }. Scud. . Id.; sky to SSE. . id. + cirro-strati to E.; a shower of misty rain half an hour ago. Id. + cumuli to N.; cirro-strati to E. . Cirro-cumulo-strati. . Scud + cumuli on E, horizon. . Id, + id. ; a few drops of rain. Id. ; light rain. . Id. + cirrous clouds; cumuli on horizon. Id. + mottled cirri and cirrous haze; heavy showers occasionally. . Scud and loose cumuli +~ linear and woolly cirri and patches of cirrous haze; heavy showers occasionally. . Scud + cirrous clouds. . Id., some of it very low + cirrous haze. . Id.; light rain. Id. ; the clouds have a bluish appearance to E.; a few drops of rain. . Id.; light rain. . Seud and cumulo-strati + cirrous clouds, . Scud ; occasional showers; sky to W. Id. ; id. Id. + cirrous clouds; drops of rain. Id. + id. Id. Id. Patches of loose scud to S.: cirrous scud +~ large cirro-cumuli and thick masses of cirro-strati and haze. 2. Dense mass of cirro-stratus + patches of scud to S.; broken to N.; shower of rain. [horizon. Scud: scud: cumuli and cirro-strati; currents of the lowest scud varying from N.to W.; cumulo-strati on | WES WES WWW Ses WHS sows boss bess Hess SS MAG. AND MET. OBs. 1843. Qu 134 Datty METEOROLOGICAL cotta THERMOMETERS, ANEMOMETER. Gottingen Mean Time Bano- Rain er f of METER ; Mas @kocs ressure. | Direction of || Clouds moving from Observation. Corrected.|| Dry. | Wet. | Diff. namin. Wind. Max. | Pres. GE lny irs in. i 2 td 4 in. Ibs. Ibs. June 10 0 O | 29-419 | 57-8 | 51-6 | 6-2 0.020 | 22 | 1:8 | NW by N. v. | WNW: NW by W: WNW. 2 0 471 || 54-0 | 51-9 | 2-1 3-5 [1:3 | Ww.v. || NW by N: NW by Q: 4 0 504 || 61-2 | 53-0 | 3-2 2.0 | 1-4 | WNW. v. NW by N. 6 0 548 || 59-2 | 51-8 | 7-4 2.2 | 1-7 NW. NW by N: NNW. 8 0 612 | 55-6 | 50-2 | 5-4 1-7 |09 | NNW. NNW. 10 0 665 || 52-3 | 49.0 | 3-3 0-6 | 0-0 NNE. 62:1 June il 0 0 45-5 1-6 18 0 || 29.982 || 48-5 | 46.0 | 2-5 1-7 | 0-0 NNE. 10 20 0 980 | 49-2 | 47-0 | 22 | 5) 0-3 | 0-2 NE. NNE. 10 22 0 988 || 49-3 | 47-1 | 2-2 : 0-4 | 0-4 | NEbyN. NNE. 10 June 12 0 Of 990] 502 | 465 | 3-7 | 48° | | os | 04 | Nunyy. NE by N. 1¢ 2 0] 979 | 506 | a76 | 30 03 [oa | mane | (a : . : : : by N. NE. 0 6 0 980 || 48-5 | 45-8 | 2-7 0-6 | 0-3 | NEbyN. NE by E. 10 S06 976 || 46-1 | 446 | 1:5 0-7 | 0-2 | NEbyN. NE by E. 1¢ 10 0 985 || 45-2 | 44.0 | 1-2 0-4 | 0-1 | NEbyN. NE by E. 1¢ 18 0] 29.969 | 44-3 | 43-8 | 0-5 0-5 | 0-2 | NEbyN. NNE. 1 20 0 970 || 46-0 | 44.4 | 16 |... 0-6 | 0-2 | NEbyN. NNE? 1 Jme 130 0| 949 | ars | 4e5 | 33 | 13 05 los |xewx | one | 2 0 945 || 51-4 | 48-7 | 2-7 0-010 | 1.5 |o7 | nEbyy. 10 4 0 932 || 50-4 | 48-8 | 1-6 0-8 | 0-3 | NEbyN. NE? 10 6 0 935 || 49-8 | 48-2 | 1-6 0-5 | 0-2 1 8 0 935 || 48-0 | 47-1 | 0-9 0-4 | 0-3 NE. 1 10 0 956 || 47-4 | 46-7 | 0-7 0-4 | 0-0 i( 18 0 || 29.953 || 49-4 | 48.3 | 1-1 0:3 | 0-0 NE? 1 20 0 956 | 53-9 | 51:0 | 29 | 514 0-4 | 04 | NEbyE. ENE. 1 22 0 955 || 56-9 | 53-5 | 3-4 0-7 | 0-5 | NEbyN. ENE. June 14 0 0 963 | 59-3 | 55-3 | 40 | 43° 1.3 | 1:3 NE. ENE. 2 0 957 || 59-3 | 55.6 | 37 0-005 | i.2 107,| une, | .So 9999990 NNW. Seeoagee GSoqaeogqr 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 [—) W by N? NNW? NNW. NNW. NW by N? ooococo July 244 51254 23h, The water having been taken out of the anemometer cistern, the force of the wind was estimated. OM SOO ow ~re SP RNSN SSH SOOM Pw OF SCOMBRNSHSH OM wOoNCeH SOO > OBSERVATIONS, JULY 18—24. 1843. SPECIES OF CLOUDS, &c. 147 Observer’s Tnitial. Scud + dense cirro-stratus and haze; light drizzle. . Cirrous-edged cumuli and scud +— cumulo-strati to 8. Cumuli and cirrous scud, very low on the side of Cheviot: a large black lowering mass of scud from about W. half an hour ago. Scud and cumuli. Cirro-cumulous scud + cumulo-strati to SE. Cirri and cirro-cumuli + cirro-strati to E. . Loose scud : cirro-cumuli and cirrous scud. Scud. Id.; heavy rain. Id. + cirrous clouds; drizzle. Scud and cumuli + cirri ; heavy rain to SE. [showers. Scud + fine ranges of eumuli, mixed with cirrous clouds, to E; dark and raining to SW.; occasional Scud and cumuli + patches of cirrous clouds ; raining heavily to SE, from a black mass < scud ; heavy shower of rain and hail lately. 64 20™, A large mass of cumuli, nimbi, and scud, covering three parts of the sky, converging to a deep black to SE. where it appears to rain heavily. Heterogeneous scud +- cumuli on E. horizon. Scud. Id. + cirro-stratus on E. horizon. 2 Id. Id.; light rain. Rain. Scud; light rain. Td. Id.; the sun’s disc just visible through a dense cirrous mass. Id.: cirrous clouds and haze. Id. +— cirro-cumuli and cirrous clouds; dark mass of scud to E. . Id.: cirrous scud. Id.; a few drops of rain. . Cirro-strati and scud ; shower. Scud + cirro-strati and cumuli to NE.; showers. Seud and cumuli + range of cumuli from WNW. to ESE. forming half of a great circle, making an angle of 8° with the N. horizon. Cumuli, apparently acted on by several currents +- cumulo-strati on horizon ; patches of mottled cirri. . Masses of cirro-cumuli and cirri + cumulo-strati on NE. and SW. horizon. . Masses of scud and cumuli to SW. ; linear cirri lying NNW. to SSE. ; cirro-strati to NE. Cirro-cumulo-strati + linear cirri. . Cirro-cumuli and cirrous haze over the sky; cirro-strati on NE. and E. horizon. Sky densely covered with cirrous haze and cirro-cumuli, moving very slowly + cirro-strati to E. Scud + cirro-cumuli and cirrous haze. Id. + id. ; drops of rain. Id.; light shower. Id.; rather heavy rain. id. ; i Id. ; Id. id. light rain ; clouds breaking. . Woolly cirro-cumuli + cirro-strati to E. Id. +— cumulo-strati to N.; cirrous haze to W. and NW. . Scud and loose cumuli. . Scud and cumuli. if yi. Id. . Cirro-cumulous scud and cumuli. 6. Id. Wnsdsh dbs Waders SU sseSeSet wwe Sew Wes WHS eow wnstsdsn 148 Gottingen Mean Time of Observation. 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 coooooooo cocecocecoe BaRro- METER Corrected. DaIty METEOROLOGICAL THERMOMETERS. Wet. Max. and Min. RAIN GAUGE. ANEMOMETER. Pressure. a SO TH he wWONnNakh wwowwre S SOF kK NOR RF Oe Direction of Clouds moving from W by 8. WNW ?: WSW. WNW. ADarNONOS 2 OOF OPW SNS S are S = SPisSte SCHAOLNS 8. OBSERVATIONS, JuLY 24—30. 1843. SPECIES OF CLOUDS, &c. Cirro-cumulous scud and cumuli. Dark lowering masses of scud have moved up, at first deeply tinged with red near the horizon. Linear and woolly cirri + patches of cirro-cumulous scud to N. and SW.; cirro-strati to E. Cirro-cumulo-strati + linear cirri to N. Id. +— detached masses of cumuli to N. and E.; dense cirrous haze. Scud and cumuli, moving very slowly +~ cirrous haze. d. + id. Scud + cirrous haze. Id. Id. Cirro-cumulo-strati. Homogeneous. Id. Scud + dense cirro-stratus and haze. Id. + id. Id. + id. Id. + id., and thick ¢irro-cumuli. Id. + id. Id. + id. Id. + cirrous haze ; thin cirro-cumuli; clouds to E. slightly tinged with red. Scud to W.: patches of cirro-cumuli + mass of linear cirri and cirrous haze, fringed with curled cirri; cirro-strati to E.; watery cumuli on Scud + a few patches of linear cirri and cirro-strati to E. [Cheviot. Scud and cumuli: cirrous scud + detached masses of cumuli on N. and E. horizon. Id. +— patches of cirri. Id. _ Gee cirro-cumuli. Cirro-cumulous scud +~ cumuli round horizon; rain to E. Thick masses of scud +~ cirrous scud ; passing shower; cumulo-strati on horizon. Dark scud + cumuli; shower. 85 10™. A complete double rainbow. Scud + cirrous haze to W. Ragged and cirro-cumulous scud, and cirro-cumuli + linear cirri and cirrous haze to E., fringed with curled cirri; cirro-strati; clouds on Cheviot ; about 4° of a solar halo visible, being at the southern extremity of the horizontal diameter ; in the midst of it is a parhelion about 1° in diameter shewing prismatic colours, this is in interlaced linear cirri. 18 30™, The lowest scud from SSW., the upper cirro-cumulous scud from W. Scud: woolly cirro-cumuli, becoming haze near horizon and thick and ribbed to E.; sky in zenith; portion of a colourless halo visible ? Masses of scud : large cirro-cumuli +~ thick cirrous haze to E. Scud : cirro-cumulo-strati. Masses of scud: dense mass of cirro-cumuli and cirrous haze. Patches of scud to S.: dense mass of heterogeneous cirri, moving very slowly. Id.: id. ; light rain. Scud + dense cirrous haze. Homogeneous scud. Cirrous and cirro-cumulous scud: woolly cirro-cumuli. [0-8 Ibs. Scud, moving rapidly: cirrous scud and cirrous-edged cumuli. 2010", The wind commenced blowing Scud and cumuli + beautiful ranges of cumuli to E.; cirro-strati to E. Scud. Two currents of scud ; dense cirro-stratus and haze. Scud ; heavy showers. Scud and cumuli + cirrous clouds to E. Scud + patches of cirro-cumuli and mottled cirri, and cirrous haze; a double rainbow lately. Scud. Id.: cirrous scud + cumulo-strati on N. horizon. | MAG. AND MET. oBs. 1843. 2P 149 Observer’s Initial. Segveddtaw ddunsgdun s-eeqeqauy 44 SSSW SS SOO SENSES 150 Gottingen Mean Time of Observation. Aug. 2 0 Aug. 3 0 Aug. 4 0 Sercreorororcis qeooeocooco oooococeoo cococecocoso © SSS Soro Oe SiS Oo SS oS a BaRo- METER Corrected. in. 29-546 567 Datty METEOROLOGICAL THERMOMETERS. Dey 1 Wet | aa) pecs 56-6 | 53-9 | 2-7 58-2)| 5231/59) ler e 59-7 | 55-7 | 4-0 66-1 | 59-7 | 6-4 64-0 | 56-0 | 8-0 60-0 | 54-2 | 5-8 55-9 | 51-9 | 4-0 53-8 | 50-3 | 3-5 52-4 | 50-7 | 1-7 54-6 | 52:3 | 2.3 56-2 | 544 | 1:8 aes 58-8 | 56-4 | 24 61-0 | 58-0 | 3-0 59-0 | 56-9 | 2-1 59-1 | 56-7 | 2-4 57-7 | 55-3 | 2-4 55-8 | 54-4 | 14 54-3 | 52-7 | 1-6 56-5 | 54.0 | 2-5 57.8 | 55.0 | 28 | Set 60-8 | 57-5 | 3:3 60-4 | 56-8 | 3-6 63-0 | 59-0 | 4-0 63-7 | 58-9 | 4-8 56-3 | 54-4 | 1-9 55-1 | 53-3 | 1-8 54-4 | 53-8 | 0-6 57-0 | 56-0 | 1-0 62.9 | 588 | 41 | 3 65-3 | 59-4 | 5-9 65-6 | 58-9 | 6-7 66-0 | 58:3 | 7-7 61-0 | 56-6 | 4-4 55-3 | 53-8 | 1-5 52-3 | 51-7 | 0-6 52-3 | 51-3 | 1-0 58-0 | 56-0 | 2.0 62-3 | 58-3 | 4.0 ce 66-9 | 59-7 | 7-2 61-0 | 56-3 | 4:7 64-0 | 59-0 | 5-0 57-1 | 55-9 | 1-2 57-3 | 56-6 | 0-7 55-6 | 54-8 | 0:8 50-6 | 48-4 | 2-2 54-6 | 50-8 | 3-8 59-0 | 52-9 | 6-1 oe 62-0 | 55-0 | 7-0 63-1 | 56-0 | 7-1 63-1 | 56-6 | 6-5 57-8 | 53-0 | 4:8 0-193 0-121 0-026 0-068 0-004 0-150 ANEMOMETER. Pressure. | Direction of Max. | Pres. Maze: Ibs. lbs. 0-0 0-0 0-2 0-0 0:0 0-0 0-0 0-0 0-9 | 0-7 | NW by W. 0-9 0:3 W. 0-5 | 0-1 W by N? 0-2 0-0 | SW by W? 0-4 | 0-0 0-7 0-5 SW by W 1-4 | 0-9 SW by W 1-8 1-2 SW. 2-3 0-6 SW. 1-6 1-2 SW. 1-4 0-2 WSw. 1-3 0-4 SW. 1-3 0:3 Sw. 0-9 0-0 0-4 | 0-0 S by E? 1-0 1-0 S by W 1-1 | 0-7 S by W 1:5 0-7 Ss. 1-2 0-4 8. 1-1 2.2 SSW. 2-1 0-2 SSW 0-0 0-0 0-0 | 0-0 0-0 | 0-0 1-0 0-7 SW. 0-9 0-8 SW. 1-1 0-6 SW. 1-2 0-3 WwW? 0-7 | 0-0 0-2 0-0 0:0 | 0-0 0-0 0-0 0-0 0-0 0-1 0-0 0-0 | 0-0 0-2 0-1 N. 0-0 | 0-0 0-1 0-0 0:0 | 0-0 0-0 0:0 0-4 | 0-1 SW. 0-4 | 0-3 SW. 0:7 | 0-5 SW by W 0:8 0-2 SW by W 1-1 0-8 SW by W. 1-4 1-1 SW byS 1-9 | 0-7 SW. Clouds moving from NW. W by N. Ww. WNw. W by N. NW by W : NNW. WNW? SW. SW: SWbyS: Sby W. SW : Sw. W by N. W. W. W by S. NNW. NW. WNw. WNw. W by N. W: W by N. W by N: WNW ? WSw. WSW. WSW : W by S. SW. | | | 1 | | | h. 20. 22. . SNWON SD SHARNSNSH SKHBRNSNSH S HAPS OBSERVATIONS, JULY 30—AvaustT 5. 1843. SPECIES OF CLOUDS, &c. Scud. Cirrous scud and cirrous-edged cumuli. Scud. . Cirrous scud +- masses of curled and flame-cirri, pointing from N. . Cumuli to E. and S.; cirrous haze and linear cirri. . Scud + dense cirrous mass. . Patches of scud : sky nearly covered with cirrous haze and linear cirri, dense to W., whence branch off fine parallel cirri; beautifully mottled and papillose cirri-like strings and masses of beads. . Scud + cirrous haze. Id. Id. + dense cirrous clouds and haze. Id. + id. ; heavy rain. Id. + as light rain. Thick mass of scud in ranges + loose cirro-cumuli; occasional patches of sky. Scud. Id. + cirro-strati to NE. Id. + cirrous mass. Id. + id. Id. + dense cirro-stratus and haze. Id. + id. Id. +— ids light rain. Id. + Gk = id. Id. + ides id. Id. Scud and cumuli +- cumulo-strati on E. horizon. [wind lately. . Patches of scud : moist-looking cirro-cumuli and woolly cirri + sheets of cirro-strati ; heavy showers with . Scud, cirro-cumulous scud. . Thin scud + thick cirro-cumulous and cirrous mass; openings to SW. and N.; light rain. . Scud, cirro-cumulous scud + thick cirrous mass to N. and E.; woolly cirri to SW. ; loose cumuli on N. and . Cumuli and scud: cirrous scud: woolly cirri +- ranges of cumuli near horizon. [S. horizon. . Ranges of cumuli: cirrous scud, woolly cirri + cumulo-strati to N. . Loose scud and ranges of cumuli +~ woolly cirri and cirrous haze to E. . Scud and cumuli + sheets of woolly cirri. Id. ; the scud, thin below; cumuli in ranges and near the horizon, mixed with cirro-strati ; to the NE. ragged castellated cumuli; varieties of cirri; a few drops of rain. Thick masses of woolly and brush cirri to W. moving slowly +—- white cumuli, nimbi, and cumulo-strati. . Scud + cirri. . Scud, moving slowly. . Cirrous scud, moving slowly ; slight shower. . Woolly cirri or cirrous scud + piles of cumuli near horizon. Cirrous scud and cumuli; showers around. [peals of thunder. . Thick scud + piles of cumuli on horizon; cirrous clouds and cumuli; heavy shower; one or two faint . Cirrous scud + piles of cumuli all round the horizon. Scud ; misty to N., E., and S.; electric-looking to W.; heavy shower. Id. + cirrous scud ; masses of loose scud lying low on Cheviot. Id. . Masses of scud near the horizon. . Patches of loose scud : masses of thin cirro-curiulous seud. . Cirrous scud: sheets of woolly cirri +- ragged cumuli on horizon. . Scud + ragged cumuli on horizon. Id. + id. . Masses of cumuli: cirro-cumuli, undulated to S. . Scud + cirrous clouds, cirro- strati to E.; light rain. 151 Observer’s Initial. Gqewrsgs wesedruds wns wens s wos dunes wos eruwss ow wennws | Gottingen Mean Time of Observation. d. Aug. 5 oo8 | o coocooo ocoocoonooo cococeoooo o o ooo (=e IS ee =) oooocoococo BaRo- METER Corrected. 29-400 395 Dry. THERMOMETERS. Wet. Diff. 53-2 3-1 49-0 3:8 47-2 2:0 51-7 2:2 58-1 4:3 58-7 3-1 56-9 2:3 57:8 2-9 58-3 1-0 60-2 1:3 60-5 1-0 57-7 0-0 57-7 0-0 60-1 0-7 63-5 0:8 65-0 3:6 62-6 3-4 61-3 3:0 56:8 0-2 56-0 0:5 52-0 1-2 53-0 3:8 54-9 3-9 56-7 6-5 56:0 | .2:3 52:3 1-2 55:0 2-3 54-7 3-9 55-6 6-6 56:1 7:0 54-9 8-2 54:1 7:8 53-6 3-2 52-1 1-0 49-7 0-7 54:0 1-2 08-8 4-9 60:8 5-2 62-1 6:0 61-2 5-2 59-9 4-7 58-6 Max. and Min. 65-1 56-3 70-2 52-1 69-5 65-2 0-060 0-171 0-067 0-000 0-000 DaIty METEOROLOGICAL Pressure. Max. ANEMOMETER. Direction of Pres Wind. ——_ SW. WSAW. SW by W? 8? S by W. SSW. SW by S. SW. SW. SW by S. SW by 8. 0-0 0-1 NNE. 0-0 NNE. NE by B? ENE. ENE. 0-0 0-1 Sw. 0-3 SSW. 0-2 SSW. 0-1 SSW. 0-1 SW by S. 0-0 Clouds moving from NW by N 9.0 9 10-( Sw? 10: SSw. 10: SSW : WSW. 9. Sw. 10: WSW : W. 9. WSW? 10- SW? 10: 10: 10. SW by S 10: Sw. 10: SW by S. 9: SW by S: SSW. 9: 10: SW by S. 9 SW by 8S. WNW. } WNW : SSW. " WNW : SW. 4: W. W by S: SW. WNW : SSW. NNE. NE by E: NNE. N by E. NNE. NNE. N by W. SE: NW. WSw. NNW: NNW. NNW. Ww? W. W by 8. ) W by S: NNW. 9.9 WSwW. W by S: NNW. OBSERVATIONS, AuGuST 5—11]. 1843. 153 a ! 34 , SPECIES OF CLOUDS, &c. Pa ae Qe fo) h. . . . . 8. Patches of scud: scud + masses of cirri, cirro-strati to E. B | 0. Id. - +— cirro-strati to N. and S. B 8. Linear, woolly, and mottled cirri + cirro-cumuli. 0. Linear cirri and cirrous haze. 12. Patches of scud on E. and S. horizon; dense mass of cirro-stratus. 0. Masses of scud +~— thick cirrous haze; light rain. . Scud os id; a few drops of rain. 4. Smoky scud: cirrous scud + woolly cirri; clouds breaking. 6. Homogeneous scud ; occasional showers. 8. Two currents of scud. 0. Scud ; occasional showers. 48. Scud, nearly homogeneous; light rain, mist. 0. Id., id...; id., id. ‘2. Homogeneous scud; rain till 215 45™. 0. Two currents of scud + cirrous haze. 2. Scud; raining towards Cheviot. 4. Id. + cirrous clouds. 96. Scud, hanging in ragged curtains and dropping rain, moving quickly + cirrous clouds. 38. Thin scud, cirrous clouds; showers; scud low on Cheviot. 0. Scud; cirrous clouds. 48. Woolly cirro-cumuli and cirro-cumulo-strati. 70. Id. + cirro-strati and linear cirri to NW. 2. Scud and loose cumuli + cirro-strati to E. and W.; patches of mottled cirri. [strati to SE. Q), Cirrous-edged cumuli, moving very slowly, apparently acted on by different currents : feathered linear cirri to W. pointing from SSW. + cirro- ' . Cirrous-edged cumuli, as before: masses of cirro-cumuli, rather large at the middle and getting gradually smaller, till at the edges they become small points almost indistinguishable from haze, the cirro-cumuli move faster than the cumuli + cirro-strati and haze to SE. 4. Ragged-edged cumuli from W., the edges near the zenith breaking into zigzag cirrous fragments, which move in various directions + woolly cirri; hazy to E. . Ragged-edged cumuli as before: linear cirri, civro-cumuli of all sizes, small cumulo-strati, &c. -- cumulo-strati3; cirrous haze to E. f 5. Cumuli and scud: beautiful ranges of cirro-cumuli to E., flame-cirri in zenith, mottled cirri to W. all lying from SSW to NNE. : * ddwo 4 dsuw ddunsdssuw weegrnssay . Cirro-cumuli, cirro-strati, and cirrous haze. | 38. Loose cumuli, the edges broken‘into patches which dissipate + thick mass of linear cirri to E., range of h small cumuli to NNE., heavy mist on the ground. »). Two currents of scud. 2. Cirrous-edged cumuli +— patches of cirri. Ds Id. and scud. D. Id. “Wt. Ragged-edged cumuli, in ranges on S. horizon. SSS eseu ). Cirro-cumulo-strati; a streak of hazy cirrus moving across the face of the moon. . Cirro-cumulous scud : cirrous clouds over the sky, in uniform sheets having a sort of stratified form point-- ing from NNW. to SSE., the lowest portions of it becoming cirro-cumulous at the edges. . Patches of scud + homogeneous cirrous mass through which the sun is seen like a bright spot one-half his diameter: a bright strip to E, . Linear cirri and cirrous haze + cirro-strati near horizon ; patches of scud. . Scud, moving slowly + thick cirrous haze. 4 Id. id. . Scud: a dense mass of cirro-cumuli, moving slowly + linear cirri and cirrous haze. . Scud. }. Cirro-cumulous scud: flame and linear cirri + cirro-strati to W. . Cirro-cumulous scud, cirrous clouds and haze all deeply tinged with red at 95; patches of cirro-cumuli. ;. Cumuli on S. horizon. } 33. Scud to S. and W.: flame-cirri to W. + cumuli on S. horizon. + 4S S45 es00 E MAG. AND MET. oBs. 1843. 2a 54 DAILY METEOROLOGICAL Cotineen THERMOMETERS. ANEMOMETER. Mean time ee Rain — nee of ee ; Max. ||Gauce. ure: _| Direction of ouds moving from Observation. Corrected.|| Dry. Wet. Diff. and Min. M ‘ Wind. i ax. | Pres. = , bli. eres in. a ¢ 4 2 in lbs. lbs Aug. 11 18 0 || 30-023 || 49-1 | 49-0 | 0-1 0-0 | 0-0 22 0| o2a| ers | ssa | a2 | 089 oo loo] se |e Aug.12 0 0 011 | 66-0 | 62-0 | 4-0 ‘ 0-000 || 94 | 9:2 | SW by 8. W by S. aot | Sera hPeciod Heals 1iete Glance: enol le take : : : F i W by 8. WwW. a to) Seeerlteia:|Psas | lite 03-| 00 a ws Hager 10 0 048 || 59-0 | 58-1 | 0-9 0-0 | 0-0 Sw. 71-5 Aug.13 0 0 47-4 0-0 18 0 || 29-908 || 48-0 | 47-1 | 0-9 0-3 | 0-0 W: SSE. . 20 0 910 || 53-9 | 52-9 | 1-0 See 0:0 | 0-0 22 0 895 || 64-1 | 58-1 | 6-0 Bes 0-4 | 0-3 S. SE? Aug. 14 0 0 891 || 67-7 | 59-8 | 7-9 : 0-000 || 09 | 25 S. S? : oe aa Fie ey 1:0 | 0-4 SSE. S and SSE. | . . 4 0-5 | 0-2 SSE. S. 6 0 865 || 64:7 | 59-6 5-1 0-3 | 0-1 SE. Ss. 8 0} 869 || 57-4 | 55-4 | 2-0 0-3 | 0-0 SSW? fo' do"; 875 || 53-2 | 52-3 | 0-9 0-0 | 0-0 SSW? 18 0 || 29-835 || 54:0 | 53-4 | 0-6 0-0 | 0-0 NE by N. 20 0 830 || 57-8 | 56-5 | 1-3 | _ 0-2 | 0-2 | NEbyE. ENE. 22 0 831 || 60-9 | 58-3 | 2-6 ine 0-2 | 0-1 NE. NE by E: SE. Aug.15 0 of 838 | 58-9 | 582 | 07 |794 |, | o1 100 | NE? SE by E. DY (0) 824 ae ai 2-1 0-4 0:3 NE. NE: SE by E: ESE. 4 0 811 : 9. 2.1 0-8 | 0-6 ENE. NE: 8. 6 0 793 || 61-0 | 59-0 | 2-0 0-4 | 0-2 NE NE. 8 0 816 || 59-0 | 58-0 | 1-0 0-3 | 0-1 | NEbyN 10 O 835 || 58-7 | 58-2 | 0-5 0-2 | 0-0 18 0|| 29-852 || 57-2 | 57-0 | 0.2 0-0 | ¢-0 20 0 865 || 57-9 | 57-2 | 0-7 63-6 0-0 | 0-0 92 0 879 || 60-4 | 59.2 1-2 55.7 0-0 | 0-0 Aug.16 0 0 887 || 64-7 | 62-0 | 2-7 : a0 0-0 | 0-0 2 0 863 || 67-8 | 64-0 | 3-8 032 | 6.9 | 0-0 4 0 851 || 69-0 | 64-7 | 4.3 0-2 | 0.2 | NEbyE. 6 0 846 || 65-0 | 62-9 | 2-1 0-3 | 0-0 8 0 863 || 60-3 | 59-8 | 0.5 0-2 | 0-0 NE. NE. 10 0 868 || 59-6 | 59-3 | 0-3 0-0 | 0-0 18 0 || 29-873 || 56-4 | 55-9 | 0-5 0-0 | 0-0 20 0 888 || 59-0 | 58-6 | 0-4 rie 0-0 | 0-0 22 0 894 | 641 | 62-5 | 16 | 5 4:9 0-0 | 0-0 . SSW : NNW? Aug.17 0 0 888 || 72:0 | 68-6 | 3.4 ig || ayuas 0-0 | 0-0 2 0 885 || 68-4 | 67-1 | 1-3 0:5 | 0-0 SSW A "X60 884 || 73-0 | 67-9 | 5-1 0:0 | 0-0 WSw. Sw. 6 0 884 || 71-3 | 67-8 | 3-5 0-1 | 0-0 NE. SW : WNW. 8 0 907 || 66-0 | 65-0 | 1.0 0-0 | 0-0 SW? 10 0 921 || 60-2 | 60-2 | 0-0 0-0 | 0-0 18 0O|| 29-915 || 54-1 | 53-6 | 0-5 0-0 | 0-0 SSW 20 0 925 | 59-0 | 57-6 | 1-4 77.1 0-0 | 0-0 SSW § 2260 912 | 647 )°60-7 9) °40 | 0-0 | 0-0 - CHARNON SO oS EN . SS ae ae =n le ol) oe RTS oF See ERG. ~ eR oer oS See Fe WO Py OBSERVATIONS, AuGusT 11—17. 1843. SPECIES OF CLOUDS, &c. A patch of mottled cirrus to NW.; very hazy round horizon; heavy dew. Scud + streaks of linear cirri to W.; hazy on horizon. Patches of clouds near horizon, loose cumuli on S. horizon, cirrous haze to NW. Patches of scud + linear cirri to NW.; cumuli on N. horizon; cirrous haze round the horizon. Loose-edged cumuli: woolly cirri. Mottled, linear, hazy, and diffuse cirri + ranges of cumuli on horizon. Scud : cirri, nearly as before. Scud, moving very slowly. Scud. Loose scud to §.: large cirro-cumuli. Patches of cirro-cumuli. Patches of cirri, moving slowly + cirro-strati and haze near horizon. Small patches of scud, increasing + cirri. Ragged-edged cumuli +—- mottled cirri and cirrous haze. Large cirro-cumuli +- cumuli and scud on E. horizon. Cirro-cumuli + linear cirri and cirrous haze; a bank of scud and loose cumuli on E. horizon. Varieties of cirri, lying in patches and sheets in all directions +— cirro-strati, the edges breaking into cirro- Loose cirro-cumuli + cirrous haze, cirro-strati. {cumuli. Thin smoky scud +~ dense scud on FE. horizon; cirro-cumuli and mottled cirri. Scud. Two currents of scud. [cirrous haze. Scud ; heavy rain since last observation from the lowest scud, just ceased, that current having disappeared ; Thin smoky scud: cirrous scud: woolly cirri; heavy showers. id., homogeneous: woolly cirro-cumuli seen at 3" 30™. Scud, nearly homogeneous. Id., id. Homogeneous. Homogeneous, misty. Id., id. Id., id. Id., id. Pinnacle-cumuli to §.; hazy on horizon. The clouds broke up at 14, Id. id. Patches of clouds to S. ; haze on horizon. Scud and mist came on rapidly about 75. Very thick mist. Thick mist. Id. Seud : patches of cirri; the clouds have just broken, the mist clearing off. Cauliflower and pinnacle-cumuli round the horizon except to NE. ; a few patches of linear and radiated cirri. The vane still points NE. About 14 the cumuli to the W. began to break in cirrous edges, while patches of scud came up from S. or SW., the temperature having risen to 76° at 1 20™; at 1h 45m the sky became nearly covered with scud and nimbi, and rain began to fall; the wind also rose, blowing from WSW 3 the temperature fell to 69°. Scud, pinnacle and ragged cumuli and nimbi ; light rain, heavy to NE. 3, Several peals of thunder from NE. and E., distant. Cirrous-edged, piled, and cauliflower cumuli, broken into cirrous scud +~ linear cirri and cirrous haze. Seud : cirro-cumuli + piles of cumuli on horizon in a sort of haze; electric-looking. Loose and pinnacle-cumuli + linear cirri, cirrous haze round horizon ; light mist falling. Linear cirri; mist. Scud + cirro-cumulo-strati to W. and NW.; heavy dew. Td. Id. — Or Or Observer’s Initial. Zur wwss fauna eeun q WEE WHSebnnses SERS HH SZS We West woes 156 Gottingen Mean Time of Observation. d. Aug. 18 On 0 0 0 0 0 0 0 0 0 0 cococoo eocoooooooo coooocece ceocooeoooco Sooo C Os Baro- METER Corrected. Dry. 70-1 74-2 75-6 72-4 66-6 63-0 54-6 57-6 64-9 72-6 76:0 771 ‘74-6 69:0 DaIty METEOROLOGICAL THERMOMETERS. Wet. 66-4 67-3 68-0 65-6 63-9 Max. and Min. Pressure. Max. Wo KP Ore rF OOO So NOON FWH = mE wath oope Roda OO © © ANEMOMETER, Direction of Peas: Wind. SSW ? SE and SW. SSW. S by W. SW. SSW : SW by S? SW by S. Sby W: SW. S by W. S by W. S by W. S by W. SW by W:S by W. OBSERVATIONS, AUGUST 18—24. 1843. SPECIES OF CLOUDS, &c. h. 0. Misty cumuli round horizon, broken cirrous masses ; very hazy to E. 2. A . A q Loose cumuli; very hazy round horizon. Id. ; milky haze near the horizon. Cirrous scud ; very hazy near horizon. Cirro-cumulous scud; thick haze. Homogeneous. Thick fog, apparently no clouds above; heavy dew. ds. id. ; the sun’s disc faintly visible. Hazy on horizon. One or two patches of scud +— large masses of cumuli to W.; patches of light cirri to S. [halo. Woolly cirri in zenith +- cumuli with cirrous crowns to NW. ; patches of cumuli; upper portion of a solar Cirrous-edged cumuli + hazy on horizon. Patches of clouds; cumuli to SE.; haze on horizon. A mass of pinnacle-cumuli to S.; cirro-strati to E.; cirrous haze and linear cirri round horizon. Cirro-strati to NW. : A tremendous thunder-storm occurred during the night. The thunder was first heard about 12}, the storm attained its height about 145 when sometimes three bright flashes were seen in the course of as many seconds, the thunder occasionally rattling in half a second after the lightning: thunder was heard till about 17 but distant. This storm was felt all over Scotland, many accidents occurred. 1°411 inch of rain has fallen since midnight. Linear cirri, becoming cirrous haze to E.; cirro-strati to SW. A patch of cirrus + cirro-strati and cirrous haze. Scud and loose cumuli. Id. Id. Dark scud and cumuli + linear cirri to E. [ance. Scud : woolly cirro-cumuli +— rows of cirro-cumuli and cirro-strati; the sky has a very disturbed appear- Cirro-cumulous scud + cirro-cumuli in bluish cirrous haze. Scud. Thin smoky scud : cirro-cumulous scud, breaking in some places into the finest cirro-cumuli + fine woolly cirro-cumuli and cirri; clouds of all tints from white to blue in frequent alternation. Scud + a homogeneous mass; rain. Id. + id. id. Id. id. id. Id. id. id. Id. : cirro-cumulous scud ; cirrous haze. Dark, heavy scud to N.: cirro-cumuli and patches of cirri + cumuli on S. horizon; raining to N. Id., black cumuli and a dark mass of cirrous-edged cloud + cirro-stratus and haze on E. horizon; raining to SE. Scud. {and here lately. A range of scud to S. + cirrous-edged cirro-strati to E.; masses of cirri to S. Id. id. id. Masses of loose and ragged cumuli: sheets of mottled cirri, cirro-cumuli, and cirro-strati. Cumuli and cirrous-edged scud + cirro-strati on E. horizon; a shower lately. Masses of cumuli. Id. + patches of cirri to W. Id. + cirrous haze to S. Scud and cumuli on N. horizon; cirro-strati and haze on SE. horizon. Clouds on W. horizon. [dew. Thick fog + fine cirro-cumuli, linear cirri and cirrous haze to E., the sun’s image well defined in it; heavy Smoky scud + large cirro-cumuli to W.; cirrous haze to E. A bank of cirrous haze to E.; patches of cumuli near the horizon. Loose detached cumuli + cirrous haze on E. horizon. Loose cumuli and scud + cirro-strati to S.; black to SE.; cirrous haze to E. Loose-edged cumuli and cirrous scud. MAG. AND MET. oss. 1843. 2R 157 Observer’s Initial. | wwe gwen ese Wass Saw eseeun Sagan Senssdesun seg egequn 158 Daity METEOROLOGICAL pes THERMOMETERS. ANEMOMETER. Gottingen Mean Time Ps RAIN ; é be METER : Max. ||Gaver.|| Pressure. | Direction of || Clouds moving from Observation. Corrected. Dry. Wet. Diff. and Min. M Wind. ax. | Pres, di) Shs ims in. ¥ e 2 e in. lbs. lbs. Aug. 24 6 O 29-533 || 65-2 | 58-7 6:5 0-4 | 0-2 S by E. 8. 8 0 556 || 56-2 | 53-2 3-0 0-2 | 0-2 SSE. 8S: WSW. 10 O 565 || 52-7 | 51-8 0-9 0-1 0-0 18 0O 29-526 || 48-9 | 48-0 0-9 0-0 | 0-0 SSW. 20 0O 526 || 53-3 52-1 1-2 69-9 0-0 | 0-0 SSW. 22 10 521 || 60-9 | 55-0 5-9 47.1 0-9 0-9 s. S$: SSW. Aug. 25 0 0 501 || 64-6 | 57-3 | 7-3 0-000 | 2:9 | 1:2 | Sby w. S by W. 2 0 478 || 66-3 57-4 8-9 1-9 | 0-9 8. Sby W:Sby W: SSW. 4 0 484 || 63-2 | 56-8 6-4 1-8 | 0-4 S by W. S by W. 6 0 497 || 60-6 57-0 3-6 0-6 | 0-0 S by W: 8 0 524 || 59-0 | 56-4 2-6 0-0 0:0 SSW: S by W. 10 O 545 || 56-6 | 54-9 1-7 0-2 | 0-0 SW byS 18 0 29-608 || 50-2 | 49-8 0-4 0:0 | 0-0 SSW ?: SSW. 20 O 622 || 53-2 | 51-8 1-4 66-8 0-0 | 0-0 220 616 || 61-2 | 57-9 3:3 des 0-6 | 0:3 SSW SW. Aug. 26 0 O 615 || 64:0 | 58-0 6-0 0-000 0-6 | 0-1 SW. SW. 2 0 605 || 65-2 | 59-0 6-2 0-4 | 0-1 SW. SW. 4 0 617 || 53-4 | 53-3 0-1 0-4 | 0-0 SW SW. 6 0 626 || 53-7 53-4 0:3 0-3 | 0-4 WSW SW. 8 0 650 || 50-9 | 50-3 0-6 0-4 | 0-0 10 O 697 || 51-0 50:3 0-7 0-2 | 0-2 SW 66-6 Aug. bye OO) 42:8 0-330 || 0-8 18 0 29-705 || 46-8 | 46-5 0-3 1-4 | 0-0 WSW. 20 O 662 || 52:0 | 50-8 1-2 64-1 0:0 | 0-0 WSwW. 22 0 617 || 60-0 | 56-3 3-7 44.3 0-6 | 0-6 S by E. SSW. Aug. 28 0 0 549 || 62-3 57:8 4:5 0-000 1-1 0-9 S by E. 8. 2 0 485 || 61-2 | 57-9 3°3 2-9 1-4 S by E. Ss. 4 0 416 || 63-0 | 59-6 3-4 2-5 1-0 8. SSW. 6 0 379 || 62-9 | 60-0 2-9 1-7 1-4 8. SSW. 8 0 372 || 60-7 | 60-0 0-7 1-4 | 0-4 Ss. 82 10 O 384 || 60-2 | 60-0 0-2 0-6 | 0-2 SW. 18 0 29-561 || 50-7 | 49-4 1-3 1:3 | 0-2 WNw. 20 O 617 || 52-0 | 49-4 2-6 65-0 0-4 | 0-1 WSW. 22 0 668 || 55-9 | 51-1 4-8 49-1 0-4 +1 Ww. NW and NNW. Aug. 29 0 0 702 || 58-1 51:5 6-6 0-105 0-5 | 0:3 NW by W. W by N and NW. 2 0 732 || 62-7 | 54-3 8-4 0-9 0-5 W. W. 4 0 753 || 63-1 54-8 8-3 0-8 0-1 W by N. WNW. 6 0 775 || 61-0 | 53-3 7-7 0-5 0-3 W. WNW. 8 0 802 || 55-3 50-3 5-0 0-3 0 WSwW. 10 O 848 || 48-8 | 46-9 1-9 0-0 | 0-0 18 0 29-916 || 40-0 | 39-7 0-3 0:0 | 0-0 20 O 931 | 46-4 | 45-3 1-1 63-7 0-0 | 0-0 22 0 942 || 55-3 | 51-7 3-6 37.2 0-0 | 0-0 WNW. Aug. 30 0 O 938 || 60-0 54-4 5-6 0-000 0-2 | 0-0 W. W. 2 0 938 || 64:2 | 56-7 7-5 0-2 | 0-0 SW ? W by S. 4 0 935 || 62-9 | 54-0 8-9 0-1 0-0 NNW. W. 6 0 943 || 61-2 | 54-5 6-7 0-0 0-0 W. 8 0 941 | 54-6 | 52-0 2-6 0:0 | 0-0 SSW. 10 0O 963 || 51-0 | 50-0 1-0 0:0 | 0-0 18 0 29-935 || 49-5 | 48-5 1:0 0-0 | 0-0 WSW | re oar OBSERVATIONS, AUGUST 24—30. 1843. | 159 SPECIES OF CLOUDS, &c. Observer’s Initial. h. 6. Cirrous scud and cumuli + linear cirri to S.; hazy to E. 8. Scud and cumuli: thin cirrous haze and light cirri over most of the sky. 0. Sky almost covered with thin cirrous haze and linear cirri; patch of scud to W. 48. Cirro-cumulous scud and woolly cirri +~ thick mass of cirro-strati to E. and SE.; mist; heavy dew. 0. Loose cirro-cumuli, mottled and feathered cirri, cirro-cumuli to E. haying the appearance of a bridge + cirro-strati to E.; range of cumulo- 2. Masses of loose cumuli: sheets of cirro-cumuli + cirro-strati to E. [strati to N. 0. Loose cumuli + patches of cirro-strati. 2. Detached cumuli: cirro-cumulous scud : thin mottled cirri. 4. Scud + thick mass of cirrous clouds ; cirro-strati and cumuli to E.; a few drops of rain. 6. Id. + id. ; id. 8. Loose scud near horizon: cirro-cumulous scud. 0. Scud. 8. Cirrous scud to W.: feathered and woolly cirri to S. + thick mass of linear cirri and cirrous haze to E. ‘40. Cirri; haze to E. ¥2. Scud and loose cumuli. Id. + cirrous clouds. de dark scud to SW. 4. Scud + thick cirrous haze. Thunder and heavy showers at 3}, Id. + cumuli on S. horizon ; heavy shower. . Scud and cirrous clouds near horizon. dgggnddue dgueddguu 44 | 38. Woolly cirri and large woolly cirro-cumuli + cirro-strati round horizon. J. Thick nearly homogeneous cirrous mass + cirro-strati to E.; a few drops of rain. 2. Thick mass of cirro-cumulous clouds, scud and cumuli to S.; clouds breaking, sky to N. and S.; cirro-strati and cirrous haze to E. and S. ). Scud +— dense cirrous mass. yD. Id. + id. t Id. +. id. ; black to N. 3. Loose scud + cirrous clouds ; a few drops of rain. 3. Thin scud, nearly homogeneous ; light rain. D. 1 id. ; light rain; the wind blew 0:8 lb. in a few minutes after this. . Scud and cirro-cumuli to SE. ; cirro-strati on E. horizon ; fine linear cirri to W. ). Cirro-strati to E. and to W. lying NE. to SW. . Loose cumuli and scud +~ cirrous haze to E. i Id. _ id. [from W. . Loose cumuli in detached masses which have an internal motion from NW. and W., the whole moving . Loose cumuli. . Cirrous haze to E. ; patches of loose cumuli to E. . Very clear, not a speck of cloud to be seen. . Cirro-strati to N.; heavy dew. . Linear cirri to E.; patches of clouds to E. . Loose cumuli + linear cirri and cirrous haze to E. . Loose cirro-cumulous cumuli. Id. Id. Id.; cirrous haze to W. Loose gray cirro-cumuli, scattered over the sky, which is quite milky. Id. id. W iW; B B B Ww WwW B B W WwW B B B WwW W. B B WwW WwW B B B WwW WwW B B Ww 4 | Cirro-cumulous scud + cirrous clouds and cirro-cumuli. 160 DAILY METEOROLOGICAL ae: THERMOMETERS. ANEMOMETER. Gottingen 2 Mos ee Quar Mean Time Eee eats Pressure. coke ane Cloud: ing fi i, eS 2 Corrected.|| Dry. | Wet. Diff. gee CEE pas aa oe of eee of Observation. and Min. Mas. |dpzes. Wind. Cloud C: Pe Sot in. S 2, 2 % in Tbs. lbs. Aug. 30 20 0 29-965 || 53-0 | 51-1 1-9 67-9 0-0 | 0:0 W by N. 22 972 || 56-7 | 53-0 3-7 48-0 0:0 | 0-0 W by N. W by N. Aug. 31 0 0 972 || 63-3 56-0 7:3 0-000 0:0 | 0-2 SW by S. Ww. 2 0 958 || 67-1 59-1 8-0 0-0 | 0-2 SW by 8. Ww? 4 0 950 || 67-0 | 59-8 7:2 0-2 | 0-0 WSw. 6 0 953 || 62-7 58-4 4-3 0-2 | 0-0 SW by 8. SW by W. 8 0 949 || 59-3 56-8 2-5 0:0 | 0-0 SW by 8. 10 0O 961 || 58-1 56-2 1-9 0:0 | 0-0 | NW by W? 18 0 29-999 || 55-3 54-4 0-9 0-2 | 0-0 Ww. 20 O 30-027 || 58-3 | 57-6 0:7 71.3 0-2 | 0-0 SW by W. W by N. 22 0 || 30-059 | 65-4 | 62-6 | 28 | 59.5 0-1 | 0-0 WSsw. W by N. Sept. 1 0 0 30-063 || 66-7 | 62-6 4-] 0-000 0-1 0:0 Ww. 2 0 30-091 || 66-3 62-6 3-7 0-2 | 0-0 W. 4 0 30-090 || 68-1 64-0 4:1 0-1 0:0 WwW 6 0 || 30-091 || 66-8 | 63-7 | 3-1 0-1 | 0-0 w. 8 0 30-097 || 60-7 59-0 1-7 0-1 0:0 SSW. 10 O 30-114 || 59-0 58-0 1-0 0:0 | 0-0 18 0 30-073 || 60-0 | 58-2 1-8 0-2 | 01 WSW. WSw. 20 0 081 || 62-3 | 60-4 1-9 70.9 0-3 | 0-0 WSw. 22 0 085 || 67-4 64-1 3:3 56-5 0-4 | 0:5 SW by W. W by N: W. Sept. 2 0 0 086 || 71-0 | 66-9 4-1 0-000 0-5 | 0-0 W. 2 0 077 || 70-6 | 67-8 2-8 0-3 | 0-1 SW by W iW 4 0 075 || 69-9 | 65-0 4:9 0-4 | 0:3 W by N Ww. 6 0 070 || 68-1 63-1 5:0 0-5 | 0-0 W by N W. 8 0 067 || 63-5 | 62-2 1-3 0-1 | 0-0 W by S? Ww. 10 O 065 || 61-9 | 60-4 1:5 0-2 | 0-1 SW by W W. 73°3 Sept. 3) 10) 10 29-800 : . 58-1 0-000 || 1-9 18 0 29-987 || 51-0 | 47-4 3-6 3-6 | 0-6 WobyS WNw. 20 O 30-017 || 53-9 | 52-9 1-0 70.5 0-6 | 0-4 WSw. WNW 22) 0 30-058 || 58-0 52-9 5-1 49-5 0-7 | 0-5 NW. NW by W: NW by W. Sept. 4 0 0 30-075 || 60-2 | 52-3 7-9 0-000 1-0 | 0-4 NW. NW by N. 2 0 30-092 |} 62-2 | 53-1 9-1 1:0 | 0-5 NNW. NNW 4 0 30-097 || 63-0 53-3 9-7 1-0 1-1 NNW NW by N. | 6 0 30-112 || 61-2 52-9 8-3 0-6 | 0-1 NW by N. 8 0 30-145 || 55-5 51-0 4:5 0-4 | 0-1 10 0O 30-171 || 50-6 | 47-9 2-7 0-3 | 0-0 SW. | 18 0 30-199 || 39-7 | 38-6 1-1 0-2 | 0-0 20 O 200 || 46:8 | 44-8 2-0 63-4 0-0 | 0-0 22 0 189 || 53-4 | 49-9 3-5 36-8 0-0 | 0-0 | Sept. 5 0 O 162 || 60-0 54-8 5-2 0-000 0-1 0-1 SW 74 (0) 139 || 65-9 | 59-1 6:8 0-1 0-0 NNW. | 4 0 111 || 682 | 58-9 9-3 0-4 | 0-2 NW by N. NNW. 6 0 101 65-2 | 58-3 6-9 0-4 | 0-2 | NW by W. NW. 8 0 107 || 59-6 | 56-2 3-4 0-3 | 0-0 ; 10 0O 088 || 57-1 55-6 1-5 0-0 | 0-0 18 0 30-065 || 54-0 52-7 1-3 0-1 0-0 Ww? NW by W. ( 20 0 065 || 59-0 | 57-2 1-8 68-6 0-1 | 0-0 NW by W. 22, 0 058 || 66-8 | 62-7 4-1 49-7 0-1 0-1 W by S. NW : NW. 4 Sept. 6 0 0 048 || 72:2 | 66-0 6-2 0-010 0-1 | 0-0 WNW if 2 0 038 || 71-2 | 65-0 6-2 0-7 | 0-0 W by S. W by N. iq 4° 0 025 || 72-2 | 66-0 | 6-2 0-1 | 0:0 | WbyS. w. ' OBSERVATIONS, AUGUST 30—SEPTEMBER 6. 1843. 161 = SPECIES OF CLOUDS, &c. 0. Cirrous haze and linear cirri. ). Fine cirro-cumuli, becoming very small at the edges, lying in lines from NW. ; linear cirri lying in diffe- rent directions, chiefly from NW.; woolly and flame cirri, all moving slowly ; cirrous haze to E. Q). A few patches of woolly cirri or cirrous scud ? + sky nearly covered with fine linear cirri and cirrous haze; solar halo. Thick large woolly cirro-cumuli +~ cirrous haze to E. Thick cirrous haze and cirro-cumuli; cirro-strati round horizon. Thin scud, moving slowly + thick cirro-cumuli and cirrous haze ; slight rain lately. f }. Thick cirrous clouds, black cirro-cumuli below; a little ago, sky seen with beautifully mottled and feathered cirri and cirro-cumuli. Cirrous clouds ?; sky in zenith. Cirro-cumulo-strati + linear and mottled cirri to E.; cirro-strati on EH. horizon; loose scud lying on ) Id. + cirro-strati to E. [Cheviot. 2. Id. . os id. Scud + thick cirrous haze and cirro-cumuli; cirro-strati on horizon. Id. +— cirrous clouds. . Id + id. ; loose cumuli on N. horizon. Cirro-cumulo-strati +— loose scud near horizon. }. Scud + cirro-cumuli and cirrous haze; dark to E.; light rain. ). Scud and cirrous clouds. . Scud + thick mass of cirrous clouds. ). Id. + id. 2, Cirrous scud: woolly cirro-cumuli; cirrous haze. ), Scud + cirro-cumuli and cirrous clouds. » Id + id. Id. + id. me Id. + id. Cirro-cumulo-strati and cirro-strati; cirrous haze to E. Scud +- cirrous haze. ,, Beautiful strata of mottled, reticulated, and woolly cirri, the lines lying at right angles to the direction of the strata; patches of scud to SW. |, Sheets of thin, woolly, fretted, and cirro-cumulous cirro-strati, lying from WNW.; streaks of fine mottled cirri; cirrous haze; loose cumuli on Cheviot. . Loose cumuli, agitated by different currents: large woolly cirro-cumuli to N. and E. + cirro-strati to N. Loose cumuli + cirro-strati to N. and E. [and E. Id. — id. Scud and loose cumuli + cirrous haze to NE. Id. +— id. Cirro-strati to NE. Streaks of cirro-stratus to NE. A sheet of cirro-stratus to E.; heavy dew. _A strip of cirro-stratus to NE. Id. Id. Sheets of cirro-cumuli and mottled cirri, cirro-strati + cirro-strati and cirrous haze on NE. and N. horizon. Id., id. fs id. id. Id., id. _ id. id. ids, id. Thin scud, cirro-cumuli and cirro-strati; light shower; a lunar rainbow for a few minutes, quite complete. Cirro-cumulo-strati + patches of woolly cirri above cirro-strati to E. Id. + id. Masses of loose cumuli and seud to W.: sheets of cirro-cumuli and mottled cirri + cirro-strati on horizon. Scud and loose cumuli + cirro-cumuli; cumulo-strati on E. horizon; dark to SW. Cirro-cumulo-strati + cumulo-strati to SE.; cirro-strati. | Woolly cirro-cumuli, moving slowly + cumuli on S. horizon. ira. AND MET. oss. 1843. 2s Observer’s Initial. Wise esuss WW Seeeerase bwaquew <= Wedsnw Sennggdun son wsssuw 162 Gottingen Mean Time of Observation. Sept. Sept. 7 0 Sept. 8 Sept. 9 Sept. Sept. Sept. Sept. 94 4, BaARo- METER eS) — coc cooocoococoo ceoeocecocece When the dry and wet thermometers were carried to the E. end of the Observatory the readings were 75°'8 and 622, Corrected. Daity METEOROLOGICAL THERMOMETERS. , Duy: *| Wet | MDI laces 68-7 | 64-4 | 4.3 62-5 | 60-7 | 1-8 60-7 | 59-0 | 1-7 44-1 | 43-0 | 11 52-3 | 51-0 | 1:3 60-3 | 54-8 | 5-5 fe 65-6 | 56-4 | 9.2 69:0 | 59-0 | 10-0 71-3 | 61-8 | 9.5 68-0 | 61-0 | 7.0 59-0 | 57-2 | 18 54-2 | 53.3 | 0-9 42-0 | 41-2 | 08 49-3 | 47-8 | 1-5 59-9 | 566 | 33 | 700 71-5 | 63-2 | 83 75-6 | 65:8 | 9-8 76-3 | 65-0 |11-3 73-6 | 67-8 | 58 62:8 | 60-0 | 2-8 56-6 | 54-9 | 1-7 49:3 | 48-9 | 0-4 52:0 | 52:0 | 0-0 60.0 | 58-9 | a1 | 77-9 69:3 | 64-0 | 5-3 | * 75-6 | 64:3 | 11-3 76-0 | 63-8 | 12-2 70-9 | 60-8 | 10-1 62-3 | 58-4 | 3-9 54-7 | 54-3 | 0-4 76-7 46-4 57-9 | 57-4 | 0-5 59-7 | 59-3 | 0.4 62.0 | 61-2 | a8 | {10 65-2 | 62-6 | 2-6 68-3 | 64-6 | 3-7 63-1 | 61-6 | 1-5 61-8 | 60-5 | 1-3 59-6 | 59-0 | 0-6 57-2 | 57-1 | O-1 58-0 | 57-7 | 0-3 57-9 | 57-6 | 0-3 60.0 | 59:3 | a7 | 208 63-3 | 61-9 | 14 67-7 | 643 | 3-4 64-6 | 61-9 | 2-7 64-7. | 61-2 | 3-5 59-3 | 58-7 | 0-6 56-2 | 55-6 | 0-6 47-0 | 46-6 | 0-4 50-7 | 50-1 | 0-6 55-2 | 54-7 | 05 | 722 RAIN GAUGE. 0-000 0-000 0-000 0-000 0-202 0-008 ANEMOMETER. Pressure. | Direction of || Clouds moving from Max. | Pres. ee Ibs. lbs. ee 0-2 | O-1 WSw. W by N. 0:0 | 0-0 W by N. 0:0 | 0-0 0:0 | 0-0 WSW : W? 0:0 | 0-0 0-1 0-1 WSw. 0-4 | 0-4 SW. 0-4 | 0-3 SW by S 0-6 | 0-0 SW by W 0-3 | 0-0 0-1 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-1 0-1 SW. 0-2 | 0-0 SW. 0-0 | 0-0 WSsw. 0:0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0:0 | 0-0 0:2) 20s SE. 0:6 | 0-2 SSE. 0-3) | Ok SSE. 0:3 0:0 0:0 | 0-0 0-2 0:3 | 0-0 SE. 0-0 | 0.0 : SE by S. 0:2 Oat NE by N. NE: SSE. 0-2 | 0-1 NE. E: SE: SSE. 0-2 0-1 WSW and NNW: SE by E. 0-6 | 0-2 | NEbyN. 0-3) 40 Or NNE. ENE. 0-0 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 E? 0-0 | 0-0 0-2 0-1 ENE, SSE and SE. 0-5 0-3 ENE. isk 0-2 ENE. 0-2 | 0-1 ENE. Ss. 0-1 0-1 2 ENE. 0:0 | 0-0 0:0 | 0-0 0-0 0-0 SSE. == ie ar im WSLYSH SHABRNSNHSHD SHHBRNSONSH . Streaks of cirro-stratus to NE. OBSERVATIONS, SEPTEMBER 6—12. 1843. SPECIES OF CLOUDS, &c. 163 Observer’s Initial. Woolly cirro-cumuli, moving slowly +- cirro-strati to E., sheets of cirro-cumuli. 3 + cirro-cumulo-strati to W., cirro-strati. Cirro-cumuli; a dark mass of cirro-cumulous scud to W. . Fog on the ground : sheets of fretted woolly cirri. Diffuse cirri. Light cirri to N. Id. NE. Small patches of cirrus, thin cirrous haze on E. horizon. Diffuse cirri to NE. Id. Small patches of cirrus, cirrous haze to E. Beautifully clear. Patches of mottled and diffuse cirri, cirrous haze to E., fog, heavy dew. id. id., id. A few patches of cirro-cumuli. Bundles of flame-like and curl cirri to N. and NW., cirrous haze on N. horizon. Curled, mottled, and flame-like cirri; hazy on horizon. Pathes of cirrus, thick cirrous haze on 8. and E, horizon. Id. . Thin cirrous haze covering a great part of the sky. . Patches of cirri; thick fog and very heavy dew. 1 1 2 : b ids: cirrous haze on N. and E. horizon. fd. 5 id. Id. ; id. 4. Thin cirri forming ; id. . Diffuse cirri; brown haze to E. . Cirri and cirro-strati to N. and NW. . Streaks of cirri and cirrous haze to N. Cirro-cumulous scud + loose scud ; rain during the night. . Scud +— loose misty scud, very low, creeping along N. horizon. [streaks of mottled cirri. . Thin smoky scud, very low, moving quickly, sometimes covering the whole sky ; masses of woolly cirrous cloud or loose cumuli, moving slowly + . Thin scud: scud: woolly scud +~ fine cirri. . Smoky scud in two currents, lately : woolly scud + cumuli to S. . Homogeneous misty scud. . Thin misty scud + loose cumuli to SW.; general haze. Thick misty scud. Id. . Fog. Id. . Homogeneous scud ; fog. Gms fog, distant. . Woolly loose cumuli; hazy. . Loose cumuli on S. and E. horizon; hazy on horizon. . Loose cumuli and scud on E, and S. horizon; hazy on horizon ; streaks of cirri to NE. . Loose, ragged, detached, smoky scud. Id. . Clouds near the horizon, thin fog, heavy dew. @. Thick fog. Loose cumuli, patches moving across the zenith evaporate ; clouds of mist rising from the ground to E. Sqr esesrw gv eraesseuw seuneqquyw 440 WEG WHS ewnW ss Hee sunnss 164 Gottingen Mean Time of Observation. d. Sept. 13 _ COOK N OF Sept. 14 0 Sept.15 0 bo (=) Sooo eeeSe! eee & = (=) bo Sept. 16 0 Sept. 17 Sept. 18 0 BaRo- METER Corrected. bo bo SSeageesee Seeeoaoegoo do eeeeceoee = » Datty METEOROLOGICAL Max. and Min. THERMOMETERS. Wet. Diff. 58-4 | 3-7 59-0 | 6-9 568 | 7-2 55-6 4-0 50-9 1-7 46-8 1-0 43-7 0-2 49-6 0-4 55:0 0-7 57°8 4-6 59-1 6-5 58-2 6-6 57-2 3:8 55-7 1-3 55:3 0-9 55-3 | 0-6 56-4 0-6 58-5 1-4 61-0 | 3-4 63-2 4-7 59-1 8-1 58-0 5:0 54:8 1-9 51-2 | 0-6 45-9 0-1 49-3 0-3 57-0 1-2 64-4 5:5 63-4 8:5 63-2 7-4 62-2 4:8 58-8 0-4 54-9 0-7 53-7 0-1 59-1 1-2 59-0 4-3 63-5 4-2 62-6 3-5 56-7 2:5 56-1 3-5 §2-2 2-1 49-1 1-2 38-7 0-6 43-0 0-4 49-7 1-3 55-1 4-6 58-0 6-0 59-9 6:3 56-1 3-2 65-8 53-5 68-8 45:3 67-6 36-4 RAIN GAUGE. 0-000 0-000 0-000 0-000 0-084 0-040 ANEMOMETER, Pressure. Direction of Max. | Pres. ee lbs. lbs. 0-1 0-12 SSE. ess | 0-3 SE by E. see | 0-2 SE by S. 0-5 | 0-2 SE. ee OO! 0-0 0-0 0:0 0-1 SE? 0-0 ENE ? 0:4 | 0-3 ENE. 0-3 | 0-2 NE by E. tela 0-1 NE. ans 0-1 NE? 0:0 | 0-0 0-2 NE. dee 10-0 0-4 0:3 NE. 0-4 0-4 NE. 0-6 | 0-5 | NEbyE. 0:5 0-5 NE. 0-4 aise 0-3 | 0-0 ESE ? 0-2 0-0 0:0 | 0-0 0-0 0-0 0-1 | 0-0 1:8 1-7 S by E. ies} |p ie S by W 2-1 1-2 Ss. 1:3 0-0 0-0 0-0 0-0 | 0-0 0-7 SSW. 0:7 0-0 SW by 8 0-9 0-7 SW by S 9.1 1:8 SW. 9.3 1-4 SW. 9.7 ies, SSW. 1-1 | 0-1 W. 0-1 0-1 W? 0-2 0-0 0-1 0-0 0-1 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-2 0-1 ESE ? 0-0 0-0 September 134 74144 23h, The suspending cord of the Anemometer weight having broken, the observations during this periot were estimated. Clouds moving from SE? SE. NE. Various. SSE: SSW. 8. Ss. ee ee eee OBSERVATIONS, SEPTEMBER 13—19. 1843. 165 SPECIES OF CLOUDS, &c. Observer’s Initial. h. 0. Patches of loose cumuli; hazy to E. Id. ; id. 4, Cumulo-stratus on E. horizon. 6. Scud and loose cumuli low on E. horizon. 0. id. 8. Scud. 0. Thick fog. ! 4 ¢ [ground to E. 72. Thin scud, much of it having a rotatory motion +~ loose-edged cumuli on horizon ; mist rising from the 0. Loose cumuli moving from all directions between ESE. and SSW., breaking into ragged patches which vanish before reaching the Prime Vertical; mottled cirri and cirrous haze to S. and E. 2. Cirrous scud : varieties of cirri + cirro-strati to S. 4, Cirro-cumuli, woolly cirri and cirrous haze + patches of cumuli to N. ‘¥6. Cirro-cumuli and thick cirrous haze +— patches of scud on E. horizon. R Id. _ id. ; red to NW. ). Homogeneous; a few drops of rain. 3. Homogeneous. D. Id. = | Id.; foggy cloud. ). Patches of loose cumuli + cirrous haze to W. », Patches of scud to N. and of cirro-strati to 8. t. Sheets of cirro-cumuli, mottled cirri and cirro-strati to 8.; patch of scud to N. }. Large cirro-cumuli + masses of scud on E. horizon; woolly and mottled cirri to N. }. Patches of cirro-strati and cirro-cumuli. Id. . Foggy. ), Id.; linear and woolly cirri. }, Cirro-strati and linear cirri to N. . Loose cumuli: cirro-cumuli and mottled cirri; cirro-strati on horizon. . Loose cumuli: cirro-cumuli + cirro-strati on E. and S. horizon. 4 Id. 4— haze on EH. horizon. ¥ Id. = id. 5 Id. : cirro-cumuli. + 1748 20™—9h. Much lightning was observed due south, frequent and bright flashes, but often faint; no clouds nor thunder, 4. Thin scud: thick scud; clouds breaking ; thick to E.; sky milky. Seud + patches of cirro-strati. Id., moving rapidly + patches of linear cirri; cirro-strati on 8. and NE. horizon. Scud + linear cirri. Id. + id. _ Thick scud ; occasional showers. Woolly cirri + patches of scud and dark cirro-strati. Patches of scud; cirrous clouds. Tf A faint aurora beyond clouds to N.; slight pulsations. Red cirro-strati to E.; rather thick fog; heavy dew. | Feathered, diffuse, and crystallized-like cirri, moving slowly. 2 Woolly and curled cirri, moving slowly + large cirro-cumuli to S.; cirro-strati near horizon. Cirro-cumulo-strati + linear cirri and cirro-strati. Cirro-cumuli, woolly cirri, and cirrous haze. | Loose woolly cirro-cumuli. ih Id. +— woolly cirri. | : | MAG. AND MET. oss. 1848. wgddduw dduwdddons dddddddgudg wwddguwedd wedge wag wedgaw | 166 Gottingen Mean Time of Observation. Sept. 20 0 Sept. 21 0 Sept. 22 0 Sept. 23 0 Sept. 24 0 Sept. 25 0 So eoo qooocooocooqocoo BaARo- METER Corrected. Dry. DAILY METEOROLOGICAL THERMOMETERS. Wet. Diff. 53-7 | 1-3 53-7 | 1-6 49-9 0-4 50-2 0-3 59-1 2-6 62-9 4-6 61-3 4:8 61-7 | -5-1 60-6 | 3-5 57-6 | 1-4 57-8 | 1-5 56-6 3-1 57-4 3-3 59-0 4:5 58-0 6-3 56:5 6-9 57-6 7:3 55-8 5-1 50-1 1:0 46-1 1-1 41-8 0-1 45-0 0-7 51-0 1-4 56-0 3-4 59-3 6-9 60-3 9.4 60-3 3-8 55:02] 0-32 49-7 1-3 41-8 0-2 45-0 0-5 51:8 1-2 59-0 3-8 61-8 7-0 62-3 9-6 62-0 4-1 2-1 1-0 48-8 0-1 47-6 0:5 45:3 2-7 44-6 5:4 44-4 6:5 44-6 5:5 44-9 | 4-1 42-9 3-1 41-1 1-9 40-9 3:3 42-5 3-1 43-0 4:5 Max. and Min. 68-4 56-4 65-6 38-6 69-4 38-5 51:3 40-8 RAIN GAUGE. 0-000 0-000 0-000 0:000 0-058 ANEMOMETER. PRnPABES, Direction of Max. | Pres. Wind. lbs. Ibs. 0-1 0-0 ESE. 0-0 | 0-0 0-1 | 0-0 0-0 | 0-0 0-2 | 0-3 S by E. 0-7 | 0-3 SW. 0:7 | 0-6 Sw. 1:0 | 1-0 SSW. 1:0 | 0:3 SW. 0-5 | 0-2 | SW by W? 1-2 | 0:3 SW. 0-6 | 0-1 0-9 | 0:3 SW. 0:3 | 0-3 Ww. 1:0 | 0-7 Nw. 0-9 | 0-5 W. 0:3 | 0-1 0-2 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 00 | 0-0 0:0 | 0-0 0-1 | 0-0 WNW? 0:0 | 0-0 0-0 | 0-0 0-1 | 0-0 0-1 | 0-0 NE. 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 0-2 | 0-0 82 0-2 | 0-0 Ss 0-1 0-3 | 0-2 NE by N 0-2 | 0-0 NE by N 0-7 | 0-4 N by EB 0-8 | 0-9 N. 1:5 | 0-9 N 2:0 | 0-5 N. 0-5 | 0-1 N by E 0-2 | 0-0 0-1 | 0-0 0-4 | 0-2 NNW 0:3 | 0-0 N by W 0-4 | 0:3 NNW Clouds moving from NE. WNw. SCNSH SOOy OBSERVATIONS, SEPTEMBER 19—25. 1843. SPECIES OF CLOUDS, &c. . Cirrous seud, woolly cirro-cumuli. . Scud ; a lightish appearance to NNW., like aurora. . Scud and loose cumuli, moving slowly + cirro-strati; sky hazy ; light mist. . Patches of scud: feathered cirri. Td: woolly cirro-cumuli; haze on E. horizon. . Loose cumuli and scud +~ patches of linear and woolly cirri. Id. id. d . Scud. Id. + cirrous clouds to N.; cumuli on N. horizon. . Masses of scud near horizon. . Cirro-strati to N. . Scud + cirro-strati on E. horizon. Id. + id. Id. + feathered and woolly cirri. . Cirrous-edged and loose cumuli + varieties of cirri. Masses of scud + cirri and cirro-strati to H. Loose cumuli + cirro-strati to S. . Cirro-strati on S. horizon; cirrous haze on E. horizen. 8. Clear. 0. Id. . A streak of cirro-stratus to NE.; light mist. . Cirrous scud to N. and NE. . Clear. Id. Id. t, A few patches of hazy cirro-stratus to NNW. Id. Id. . Clear. . Cirro-strati on NE. horizon; stratus in the valleys; heavy dew. . Mottled cirri and cirro-strati to N. and E. . Streaks of cirro-strati to E. . Hazy cirro-strati to E. . Woolly and linear cirri + hazy cirro-stratus on E. horizon. . Patches of cirri; haze to E. Id. to N. ' Clear. Id. Seud ; slight drizzle. id. ; id. Id. + cirro-strati and cirrous clouds. . Masses of scud to S.: woolly cirri + cirro-strati to NE. . Seud : cirro-cumuli and woolly cirri. . Scud and loose cumuli + cirrous clouds. +— id. Scud and Garena clouds. . Scud + linear cirri and cirro-strati to NE. . Woolly cirri and large cirro-cumuli + heavy dense masses of cirro-strati all round the horizon. . Scud. — =P) -~T Observer’s Tnitial. SSeS Sere Ses essun Mews srsesy eeesedun 4a | 444 444444448 168 DAILY METEOROLOGICAL Sah THERMOMETERS. ANEMOMETER. Gottingen NG Qu a eh METER a Pressure. be ‘ tity of p Max. ||GAUGE. Direction of Clouds moving from of Giseuvatien: Corrected.|| Dry. Wet. Diff. aria ne Bea. aaa vantdl Clou ax. | Pres. ; ad. ths: “an, in. ° ° c ° in. Tbs. Ibs. 0-4 Sept. 26 0 0 || 29-949 | 49-0 | 43-0 | 6-0 0-000 | 9-7 | 9-6 NNW. NNW : Nby E. 8. 2 0 914 || 52-7 | 45-4 | 7-3 1-1 | 0-4 N. N. 4 0 862 || 51-4 | 44-4 | 7-0 1-0 | 0-3 | Nby W. N by W. 6 0 809 || 49-7 | 43-0 | 6-7 0°38! 1°0-1 NNW. N. 8 0 760 || 48-3 | 43-8 | 4.5 0-1 | 0-0 10 0 730 || 46-7 | 45-2 | 1-5 0-1 | 0-0 18 0 || 29-627 || 40-5 | 38-0 | 2-5 0-7 | 0-0 N: Nw. 20 0 606 || 43-9 | 40-9 | 3.0 | .0 4 0-6 | 0-2 NNW. N by W. 22 0 599 | 46-7 | 41-0 | 5-7 | 504 1:4 | 1-2) \o Mi bye N. Sept. 27 0 0 585 || 49-3 | 43-9 | 5.4 0.005 || 1:6 | 0-4 N. N by E. 2 0 571 || 49-3 | 43-7 | 5-6 16 | 1-0 | Nby W. Nby E: NbyE. 4 0 568 || 48-6 | 44.0 | 4-6 14 | 0-6 | Nby Ww. N by E. 6 0 5A Wao! || ase ee D1 10:2 | cab, N by E. 8 0 582 || 43-2 | 40-9 | 2.3 0-9 | 0-1 | Nby W. N by E. 10 0 586 || 45-0 | 41-4 | 3-6 0-6 | 0-9 | Nby W. 18 0 || 29-600 || 40-6 | 38-5 | 2-1 1-0 | 0-2 | NWby Ww. N by E. 20 0 616 | 41-6 | 39-0 | 26 | 0, 0-3 | 0-2 | NW byN. N by E. 22 0 623 | 46-6 | 41-7 | 4.9 | 5,7 1:3 | 0-7 | NW by N. Sept. 28 0 0 623 || 48-1 | 42-2 | 5.9 0.012 || 24 | 22 | Nby W. N. 2 0 634 || 50-2 | 44-2 | 6-0 22 11-6 | Nby W. N. 4 0 629 || 51-1 | 44-9 | 6.2 18 | 0-8 N. N:N. 6 0 656 || 47-1 | 43-7 | 3.4 LBs '| 008 N N by W:N. 8 0 685 || 44-3 | 42:0 | 2-3 0-2 | 0-0 10 0 705 || 42-4 | 40-8 | 1-6 0-0 | 0-0 18 0 || 29-741 || 35-0 | 34-4 | 0-6 0-1 | 0-0 NW. 20 O 749 || 35-6 | 34-7 | 0-9 518 0-0 | 0-0 NNW. 22 0 746 || 45-0 | 42-9 | 21 | 3y6 0-0 | 0-0 NNW Sept. 29 0 0 735 || 49-0 | 44-4 | 4.6 0-005 || 0-2 | 1 NW? WwW: NNW. 2 0 694 || 53-1 | 47-8 | 5-3 0-3 | 0-5 | SW by W WwW : NNW. 4 0 683 ||. 51-8 |. 47-7 | 4:1 0-5 | 0-1 W byS W by N. 6 0 635 || 50-9 | 47-9 | 3-0 0:3 | 0-1 WwW W. 8 0 614 || 49-9 | 47.2 | 2.7 0-6 | 0-2 | SWby W 10 0 555 || 48-1 | 47-9 | 0-2 0-7 | 0-3 SW 18 0 || 29-385 | 53-9 | 52-7 | 1-2 1-5 | 0-0 ww. 20 0 428 | 56-0 | 54.3 | 1-7 | 545 0-1 | 0-0 NW by W: Nw. 22 0 468 | 60-0 | 56-8 | 3-2 | Ges 0-3 | 0-4 | WbyS. WNW : WNW. Sept. 30 0 0 490 || 64-0 | 58-9 | 5-1 0.252 || 0:9 | 9-5 Wsw. NW by W. 2 0 512 || 62-2 | 57-2 | 5-0 fd tek Ww. WNW : NW by N 4 0 542 || 62-0 | 57-1 | 4.9 1-6 | 0-3 Ww. WNW : Nw. 6 0 568 || 57-0 155-3 | 1-7 0-5 | 0-1 WNW WNw. 8 0 563 || 55-1 | 54-9 | 0-2 0-2 | O-1 SW 10 0 552 || 55-7 | 55-5 | 0-2 0-3 | 0-2 Sw 64-5 Oct 1 0 0 54.0 || 0-404 || 1-3 | 0-7 SW. 18 0 || 29-626 || 51-1 | 47-9 | 3-2 2-4 | 0-5 Wsw. WNW : W by N. 20 O 658 | 51-1 | 48-0 | 3-1 | 4, 1-0 | 0-5 Ww. W by N. DoF 10 671 | 54:3 | 49-0 | 5-3 ; 1-6 | 1-6 w. W by N: W. Oct. 2 0 0 685 | 55-6-| 503 | 58 | o> 2.1 | 1.6 | WNw. W:WNw. | 2 0 695 || 57-6 | 50-9 | 6-7 0-008 | 94 113 | woyN.v. || Woy N: WNW. 4 0 711 || 56-9 | 50-2 | 6-7 1-8 | 1-2 | WbyN. W by N. 6 0 731 || 52-1. | 47-6 | 4-5 2:0 | 0-8 | WbyS 8 0 777 || 49-3 | 46-5 2.8 0-7 | 0-1 Wwsw. WNW : WNW. 10 0 796 || 46-5 | 44.4 | 2-1 0-3 | 0-1 WSw. WNW. OBSERVATIONS, SEPTEMBER 26—OCTOBER 2. 1843. 169 SPECIES OF CLOUDS, &c. Observer’s Initial. bh. ). Two currents of scud. 2. Scud + cirro-cumuli and cirrous clouds. Id. + cirro-cumuli; cirro-strati on horizon. Id. + cirrous clouds. Ih es id. Id. ; slight drizzle at 94. . Scud: thin cirro-cumuli to S. Td. | | Large cirro-cumuli + masses of scud near the horizon ; cirro-strati on S. horizon. Scud and loose cumuli. lds: cirri. Scud and cirrous-edged loose cumuli + loose nimbus to E.; occasional slight showers. 4 Id. ~ loose cumulo-strati on E.and NE, horizon; nimbi to S: and SE.; passing showers. Scud ; passing showers. Id. Be Ad. . Scud and cirro-strati near horizon. . Scud + cirro-strati to S. and W. . Scud and loose cumuli +~ cirro-cumuli.. };. Masses of scud : large cirro-cumuli. id. . Seud aad cirro-cumulli., . scud. Scud + linear cirri to NW. lying ENE. to WSW. ; hoar-frost. . Varieties of cirri + cumulo-strati on E., and cirro-strati on S. horizon. Woolly and diffuse cirri with cirrous haze. Masses of scud : woolly and curled cirri. Id.: large cirro-cumuli. . Scud. Id. + cirrous clouds and haze. Id.; a few drops of rain. Heavy rain. Scud. Id.: woolly, linear, and mottled cirri.. Id. : id. ; cirro-strati on horizon. Scud and loose cumuli + cirro-cumulo-strati to SW. Id.: cirro-cumuli + linear cirri to E.; thick mass of cirro-strati to YY. ide id. +— dense cirro-strati all round the horizon ;. woolly cirri. Dense homogeneous mass of cirro-stratus ; light rain. Light rain. Raining rather heavily. 442444444 e4eeeeee4 444seeee4 444444444 444448 | Masses of scud to NW.: cirro-cumuli, woolly cirri and cirrous haze moving off. . Masses of scud. | Patches of loose scud: sheets of woolly cirri and cirro-cumuli +— cirro-strati to E. and S. Loose scud : cirrous-edged, very loose cumuli +~ cirro-strati to 8S. Scud and loose cumuli: mottled and linear cirri. Scud and loose cirrous-edged cumuli. Masses of cirrous scud ; loose cumuli on N. and 8. horizon ; patches of cirri. Scud: mottled cirri, causing an indistinct coloured: lunar corona about 4° radius: Scud + cirro-strati to S, 443444445 MAG. AND MET. ozs, 1843. 170 Daity METEOROLOGICAL Paget THERMOMETERS. ANEMOMETER. Gottingen Qua Mean Time Baro- RAIN ‘ it of Wao LH , Max. ||Gaver.|| Ptess¥re- | Direction of || Clouds moving from : Observation. Corrected.|| Dry. Wet. Diff. |and Min. ‘ee ea. Wind. Max. | Pres. Gls SoG Gaal in. 2 ‘i o; in lbs lbs. Oct. 218 Q|| 29-797 || 47-6 | 45-5 | 2-1 0-5 | 0-1 WSsw. W by N. 20 0 797 || 49-1 | 47-6) 15 |5 0-1 | 0-1 | SW by W. SSW: W. 22 0 792 || 51-7 | 50-7 | 1-0 | 306 0-5 | 0-4 Sw. Sward : W. Oct. 3 0 O 787 || 58-0 | 54-1 | 3-9 0-008 0-7 | 0:3 SW. Ww. 2 0 773 || 57-2 | 52-8 | 4.4 0-6 | 0-1 WSsw. W by N. 4 0 766 || 57-9 | 52-7 | 5-2 0-6 | 0-2 | SW by w. W : NW by W. 6 0 761 || 55-0 | 50-9 | 4-1 0-3 | 0-0 WNw. 80 763 || 53-4 | 51-1 | 2-3 0-2 | 0-0 Sw. 10 0 767 || 51-9 | 50-1 | 1-8 0-1 | 0-0 WwNw. 18 0] 29-780 || 50-3 | 50-0 | 0-3 0-1 | 0-0 20 0 775 || 50-9 | 50-7 | 02 | 5.4 0-0 | 0-0 22 0 773 | 59-9 | 57-2 | 27 | Ao, 0-4 | 0-7 | WbyN Ww. Oct. 4 0 0 768 | 62-0 | 56-7 | 5-3 0.030 | 12 | 9-7 wW. w. 2 0 761 | 63-5 | 56-9 | 6-6 1-1 | 1-7 | WbyN Ww. 4 0 748 || 63-0 | 57-8 | 5-2 1-6 | 0-9 Sw. W:wW. 6 0 754 || 60-0 | 55-8 | 4-2 1-9 | 1-1 | SWby W Ww. 8 0 770 || 58-1 | 55-0 | 3-1 1-0 | 0-1 SW Ww. 10 0 763 || 57-9 | 55-0 | 2-9 3 | 0-2 | SWbyS Ww. 18 0O|| 29-735 | 55-3°] 51-8 | 3-5 0-8 | 0-2 SW Ww. 20 O 740 || 55-0 | 53-0 | 20 | 44 0-2 | 0-0 W. 22 0 736 || 57-0 | 53-7 | 3:3 | 55.5 0-2 | 0-2 | SWbyS WobySs Oct. 5 0 O 723 || 60-0 | 55-8 | 4-2 0.004 0-5 | 0:3 Sw. WSW. 2 0 694 || 63-3 | 58-1 | 5-2 0-7 | 0-4 SSW. WSW. 4 0 664 | 61-0 | 55-6 | 5-4 0-6 | 0-2 Sw. WSW 6 0 640 | 58-1 | 54-8 | 3-3 0-6 | 0-2 SW SW 8 0 625 || 55-1 | 53-4 | 1-7 0-1 | 0-0 SW 10 0 578 || 55-6 | 53-6 | 2-0 0-1 | 0-1 Sw. Sw? 18 O || 29-316 | 58-0 | 54-9 | 3-1 0-9 | 1-4 S by W SW by S 20 0 276 || 55-9 | 54-0 | 1-9 | 6. 9 1-9 | 1-1 S by W SW byS 22 0 237 || 58-1 | 56-8 | 13 | ,7'. 1-0 | 0-3 SSW. EW Daas Oct. 6 0 O 196 || 60-0 | 57-9 | 2-1 0.029 || 2-2 1-7 SSW. SSW : SW by 8. 2 0 170 || 61-7 | 58-1 | 3-6 ; 2-7 | 1-6 | SWbyS. SW by 8. 4 0 135 || 60-5 | 57-5 | 3-0 1-8 | 0-6 | SWbyS. | SW by S: SW by W. 6 0 093 || 58-0 | 55-7 | 2-3 1-4 | 0-8 | SWbyS. SSW. 8 0 064 | 54-7 | 52-9 | 1-8 0-9 | 0-4 | SWbyS. SSW : SW. 10 0 034 || 53-9 | 53-1 | 0-8 1-5 | 0:3 SSW. SW by S. 18 0] 29-031 || 52-7 | 51-7 | 1-0 0-8 | 0-2 | SW by W w. 20 0 070 || 54-6 | 53-0 | 1-6 63-0 1-0 | 0-2 Sw. Ww. 22 19 081 | 57-9 | 54:3 | 3-6 40.4 1-0 | 0-5 Sw. W by S. Oct) 7 0 0 096 || 58-4 | 53-7 | 4-7 0.182 || 16 | 9-6 Sw. W by S: W byS. 2 0 099 | 61-6 | 53-1 | 8-5 2-6 | 1:8 Sw. W:W. 4 0 081 || 58-0 | 51-6 | 6-4 2.8 | 2-0 | SW by W. W by S: W 6 0 062 || 53-9 | 49-6 | 4.3 2-4 | 1-1 Sw. W by S: W. 8 0 049 || 52-5 | 49-9 | 2-6 1-1 | 0-2 SW 10 0 018 || 50-7 | 50-0 | 0-7 0-2 | 0-1 SW 62-4 Oct. 8 0 0 46.0 | 0253 || 23 18 0 || 30-228 | 39-3 | 38-8 | 0-5 3-8 | 0-0 WwW 20 0 229 || 43-0 | 42-7 | 0.3 51-8 0-0 | 0-0 WNW. 22 0 241 || 48:1 | 46-3 4), 1-8 | 5.4 0-0 | 0-0 NNW ? Oct. 9 O O 260 || 50-2 | 47-7 | 2-5 0-019 | 02 | 1 NNW. NW by N. 2 0 296 || 47-7 | 46-6 | 1-1 0-3 | 0-2 | NEbyN. NNE. 4 0 343 | 46-9 | 44-5 | 2.4 0-5 | O-1 NE. N by W. WON © OF . ewww OW et BS oe eee OBSERVATIONS, OCTOBER 2—9. 1843. SPECIES OF CLOUDS, &c. . Scud + cirro-strati on E. horizon, tinged with red. . A line of loose scud to SE.: scud + cirro-strati to E. . Smoky scud on E. horizon: scud. . Scud, thick to N. + cirro-cumuli and cirro-strati to 8S. Id. + cirrous clouds and cirro-strati. Id.: woolly cirri, cirro-cumuli, cirro-strati, and cirrous haze. . Cirro-cumulo-strati; cirrous haze. 8. Dense mass of cirrous clouds and haze. . Large cirro-cumuli +~ cirro-strati on horizon. . Scotch mist. Id. Two kinds of scud, one very thin. Scud + cirro-strati to N. Id. + cirrous haze to N. Id.: woolly cirri + cirrous haze and cirro-strati to N. [cirro-cumuli. Id. + cirri-like rolled masses of curls, and somewhat bentlike cymoid cirri, other varieties of cirri; . Scud. Id., moving rather quickly. Id. and cirro-cumulo-strati. Id. Id. }}. Scud + cirro-strati on E. horizon tinged with red. Id. + thick mass of cirrous clouds and haze; a shower since 184. Id. + id. ; light rain. Two currents of scud ; light rain. . Scud + cirrous clouds and haze; light rain. Id.: id. Id. + id. Id.: cirro-cumuli. Id., moving quickly + cirro-cumuli; occasional showers; heavy shower immediately. Id. Id. + cirro-strati to S. Id. + patches of cirro-strati. Id.: mottled and linear cirri + patches of cirro-strati; raining to E. . Scud and loose cumuli: mottled, woolly, and linear cirri. Id., in patches: woolly and curled cirri. . A mass of scud : woolly and diffuse cirri and loose cirro-cumuli + cirro-strati. . Thick mass of diffuse cirri and cirrous haze; masses of scud and cirro-cumuli. | Scud ; thick cirrous mass ; light rain. Seud + woolly and diffuse cirri. Woolly cirrous scud. Id. +— cirrous clouds, cirro-strati and haze. Scud + cumuli; cirro-strati to S. Id. | Cirrous scud + scud, lower. 171 Observer’s Initial. SS SSS Sass SS Sees Se WW SH Sew ese Www sZee 455545455 wessuw 72 Dainty METEOROLOGICAL PAPOAD THERMOMETERS, ANEMOMETER, Gottingen Rano. Qua Mean Time RAIN ; Pa of Pras te D Diff Max. ||GAUGE. Pressure. Direction of Clouds moving from of Observation. orrected. Bye Wet. it. land Min. M Wind. ' j ax. | Pres. d he m. 2 o: Q G in. lbs. lbs. Oct. 9 6 O]|] 29-420 || 45-8 | 43-9 | 1-9 0-2 | 0-0 N by W. g 0 482 || 44-0 | 43-0 | 1-0 0-1 | 0-0 10 0 543 || 43-9 | 42-9 | 1-0 0-0 | 0-0 18 0 || 29-634 || 42-3 | 41-9 | 0-4 0-0 | 0-0 20 0 632 || 42-2 | 41-9 | 0-3 |. 4 0-0 | 0-0 NNW : NE? 22 0 619 | 44-9 | 44-6 | 03 | 255 0-0 | 0-0 ENE : W by 8. Oct, 10 0 O 595 || 44-0 | 43-4 | 0-6 0-039 || 9:9 | 0-0 8. 2 0 559 || 47-6 | 45-7 | 1-9 0-0 | 0-0 Ww. 4 0 511 || 45-7 | 44-7 | 1-0 0-1 | 0-0 Ww. 6 0 481 || 42-1 | 41-5 | 06 0-0 | 0-0 Ww. RVD 443 || 39-1 | 38-8 | 03 0-0 | 0-0 10 0 395 || 38-7 | 38-4 | 0-3 0-0 | 0-0 18 0] 29-122 || 40-0 | 39-9 | O-1 0-0 | 0-0 20 0 | 29-066 | 41-0 | 40-8 | 0-2 | 4, 0-0 | 0-0 ESE. 22 0 | 29-009 | 42-6 | 423 | 03 | go’. 0-0 | 0-0 ESE Oct. 11 O O || 28-958 || 45-2 | 44-3 | 0-9 0.490 || 0:0 | 0-0 ESE 2 0 || 28-879 || 43-6 | 43-3 | 0-3 0-0 | 0-0 ESE. 4 0] 28-826 || 43-4 | 43-1 | 0-3 0-0 | 0-0 ENE? : ESE. 6 O|| 28-771 || 42-0 | 41-6 | 0-4 Ok 7) G1 NE. SE. 8 0O|| 28-755 || 42-1 | 41-5 | 0-6 0-2 | 0-2 NE. 10 © || 28-760 || 42-1 | 41-1 | 1-0 0-4 | 0-8 NNE. 18 0 || 28-867 || 42-0 | 39-7 | 2.3 7-5 | 4.4 N by E. N by E. 20 0 | 28-949 || 40-7 | 40-1 | 0-6 | 4,5 5-3 | 1-8 N by E. NNE. 22 0 || 29-048 | 42.0 | 39:3 | 27 | oo 5.0 | 24 | Nby w. N:Nby E. Oct. 12 O O|| 29-126 || 41-8 | 39-0 | 2-8 0.890 | 4°3 | 24 | Noy Ww. N. 2 0 || 29-155 || 43-6 | 38-0 | 5-6 3-8 | 1:9 | NW by N. Nw? 4 0] 29-138 | 45-0 | 38-4 | 66 2-2 | 1-0 WNw. Nw? 6 0 | 29-140 || 42-0 | 38-3 | 3-7 2-1 | 0-9 Ww. 8° “Ol So 10N sare. |e a) 1 aes 2-8 | 0-0 | NW by N? 10 0 || 29-232 || 33-5 | 30-2 | 3-3 1-2 | 0-5 NNW. 18 0] 29-309 || 31-3 | 29-9 | 1-4 2.4 | 0-2 W. 20 0 311 | 32-3 | 30-2 | 21 | 4.6 0-3 | 0-2 | SW by W. || 22 0 293 || 38-4 | 34-0 | 4.4 05 | 0-4 | WbyS. Oct. 13 0 0 971 || 42.3 | 371 | 5.2 | 283 oo12 || 41 | 14 W. 2 0 275 || 43-9 | 38-9 | 5-0 : 3-0 | 0-9 W. NW by N.. 4 0 249 || 37-9 | 36-9 | 1-0 1-1 | 0-1 | NW dy W. Nw. 6 0 273 || 37-9 | 35-9 | 2-0 0-4 | 0-0 NW? 8 0 288 || 35-9 | 33-1 | 2-8 0-5 | 0-3 | NW by W. 10 0 338 || 35-9 | 33-6 | 2-3 1-5 | 0-2 | NW by W. 18 0] 29-502 || 34-0 | 32-6 | 1-4 0.8 | 0-2 | NW by W. NNEZ 20 0 538 || 36-4 | 34:0 | 2.4 0-2 | 0-6 Nw. |i NNW 2 22 0 562 || 41-0 | 37-4 | 3.6 | 4° 0.4 | 0-2 | Nw by w. Oct. 14 0 0 582 | 44.6 | 39-3 | 5-3 | 32° 0-8 | 0-2 | NNW. NNW. 2 0 587 || 45-7 | 40-1 | 5-6 9-077 | 9.5 | 0.2 | NNW. NNW : Nw. 4 0 588 || 44.6 | 39-0 | 5-6 0-3 | 0-0 Nw. 6 0 587 || 36-0 | 34-8 | 1-2 0-0 | 0-0 NW? 8 0 584 || 29-9 | 29-6 | 0-3 0:0 | 0-0 10 0 580 || 28-4 a : 0-1 | 0-0 46-3 Oct. 15 0 O ness : ee 0-4 18 0 || 29-451 || 26-4 | 25-7 | 0.7 1-2 | 0-0 NW.. 20 O 452 || 26-0 oo eel anes 0-1 | 0-0 Nw. 22 0 431 || 32-6 | 30-2 | 2.4 cae 01 |o1 | wsw? |* Nw. OBSERVATIONS, OcTOBER 9—15. 1843. 173 SPECIES OF CLOUDS, &. Observer’s Tnitial. 8. Id. + id. h. 6. Scud +~ cirrous clouds. 0. Id.; a slight shower lately. 8. Scud and cirrous clouds. 0. Thin smoky scud : smoky scud on S$. horizon +- woolly cirri; slight shower lately. 2. Thin scud: thin cirrous scud and haze, moving slowly ; slicht shower lately. 0. Scud ; a few drops of rain. 2, Loose cumuli and scud : cirrous scud. [radius . Black, ragged, loose, electric-looking cumuli along N. and S. horizon + thick mass of woolly and linear cirri and cirrous haze; solar halo 22° §. Sky covered with woolly cirri, patches of cirro-cumuli, thick cirrous haze + masses of loose scud on horizon. 8. Thick cirrous mass; heavy dew. 0. Quite homogeneous. 8. Homogeneous ; light rain. 0. Scud + homogeneous clouds above ; light rain. Id. + id. ; id. 0. Id.; raining. Be eld: id: 4. Two currents of scud ; heavy rain. 6. Scud; breaking up a little to SE.; rain ceased at 54 15™, 3. Homogeneous. 0. Scud. 8. Homogeneous smoky scud, the Moon seen through it; light rain. 0. Scud + woolly cirri. 2. Loose seud : cirro-cumulo-strati + cirro-strati to N. 40. Two strata of scud +~ patches of cirri. 2. Patches of woolly cirri + loose cumuli near horizon. 4. Masses of cirro-strati +- scud and cumuli on N. and NE. horizon. 6. Scud and loose cumuli all round the horizon. 38. Scud ; a shower of hail about 7». 70. Small patches of clouds on horizon. 3. A strip of cloud on E. horizon; sky very clear; ground covered with hoar-frost. 0. Cumuli on E. horizon. 2. Cumulo-strati and cirro-strati on NE. horizon ; faint streaks of cirrus to SE. 9. Cumulo-strati on E. and NE. horizon; masses of scud moving along N. horizon; cirro-strati to S. 2. Scud and loose cumuli. 4, Id. + cumuli on E. and N. horizon; heavy shower of hail 15™ since, passed off to S. 5. Patches of scud + piles of gray cumuli to SE.; blue haze and cirro-strati to E. 3. Scud. J. Loose scud. 3. Cirro-strati on horizon. ). Cirro-strati, moving slowly + cumuli on E. horizon. 2. Patches of cumuli and cirro-strati on E. and N. horizon. ). Patches of scud and loose cumuli + cirro-strati to N. and S. 2. Masses of loose cumuli: woolly, mottled, and linear cirri and cirro-strati. . Cirri as before + cirro-strati and cirrous haze on horizon; masses of cumuli. 5. Scud to S. + diffuse cirri over the sky ; cumuli to E. 3. Clouds to N. ). Cirrous clouds, much hoar-frost. Sev sssduw aeggggeun geedagdsgun foe ssaeuy 4eqrseequy seu | [arch. -). An Auroral arch about 15° altitude, with bright streamers at the extremities and fainter ones within the 3. Light cirri + cumulo-strati to E.; cirro-strati to E. and NE. ). Mottled, woolly, and linear cirri, cirro-strati + cirro-cumulo-strati to N.; cumulo-strati on E. horizon. D. Id. — id, id. was MAG. AND MET. oss. 1848. 174 Gottingen Mean Time of Observation. Oct. Octs 1850 Oct. 19 O Oct. 20 O Oct. 21 0 Oct. fo) BARo- METER Corrected. 061 29-926 589 29-428 DAILy METEOROLOGICAL THERMOMETERS. Dry. | Wet. | Dif. |, yan, 40-0 | 34-5 | 5-5 41-3 | 35-7 | 5-6 41-8 | 37-7 | 4-1 35-1 | 34-3 | 0-8 35:3, | 32-5 1.8 34-8 | 32-2 | 2-6 36-4 | 34.7 | 1-7 35-7 | 35-0 | 0-7 34-3 | 33-3 | 1-0 ae 39-8 | 39-2 | 06 35-8 | 35-5 | 0:3 36-5 | 36-3 | 0-2 37-2 | 37-0 | 0-2 37-2 | 35-0 | 2.2 35-1 | 32-8 | 23 98-8 oes see 28-1 | 27-6 | 0-5 36-2 | 32.27) 4.02 | 37° 39-7 | 35-7 | 4-0 41-0 | 38-0 | 3-0 43-0 | 39-4 | 3-6 35-4 | 34.3 | 11 32-2 | 31-0 | 1-2 30-3 | 29-6 | 0-7 24.0 | 23-62] 0-4 26-2 | 26-02] 0-2 33-0 | 31-0 | 2-0 aie 40-4 | 35-9 | 45 44-4 | 39-3 | 5-1 44-7 | 39-8 | 4.9 39-6 | 37-2 | 24 39-2 | 37-2 | 2.0 37-2 | 36-0 | 1-2 42:0 | 40-4 | 1-6 45-3 | 43-4 | 1-9 47-2 | 45.2 | 2-0 an 49-4 | 47-1 | 2:3 50-5 | 47-5 | 3-0 50-9 | 47-9 | 3-0 48-1 | 45-6 | 2-5 47-0 | 45-4 | 1-6 47-2 | 45-8 | 1-4 47-0 | 46-8 | 0-2 47-8 SOG ONee Nea AST N Aacte Masel aa 5 50:8 | 46-9 | 3-9 50-5 | 44-8 | 5-7 51:5 | 44-5 | 7-0 44-1 | 41-1 | 3-0 41-2 | 39-2 | 2-0 40-1 | 38-7 | 1-4 53-3 38-9 RAIn GAUGE. in. 0-017 0-387 0-333 0-007 0-000 0-063 0:007 ANEMOMETER. Pressure. Direction of Max. | Pres. one: Ibs. Ibs. 0-2 0-2 WSW ? 0-2 0-0 WSW 0-2 0-1 WSW 0-2 0-1 WSW 0-1 0-0 WSW 0-0 0-0 0-4 0-1 NE. 1-0 0-5 NNE. 0-5 0-0 1-8 1-2 N by E 3-1 1-4 NNE. 2-1 1-4 NNE. 1-8 0:3 N by E 1-7 1-6 N. 1-7 0-6 NNW. 0-9 0-0 0-2 0-1 NW ? 0-1 0-1 NW ? 0-4 | 0-2 N by W 0-5 0-4 NNW. 0-2 0-1 N. 0-2 0-1 NG 0-0 0-0 0-0 0-0 0-0 0-0 0:0 0-0 0-0 0-0 0-1 | 0-1 W by S. 0-3 | 0-2 W by S. 0-4 0.4 WSsw. 0:3 0-1 SW. 0-1 0-0 0-0 0:0 1-1 0-4 SW by W. 0-6 0-5 SW. 1-1 0-2 SW by W. 0-8 0-2 SW by W. 0-9 1-0 SW. 1-5 0-3 SW by W. 0-7 0-1 SW. 0-2 0-3 SW. 0-5 0-4 SW by 8. 1-6 0-0 0:5 0-8 NW by N. ON 0:3 NW by W. 0-9 0-3 NW by W. 0-9 0-3 NW by W. 0:5 0-4 WNW. 0-3 0-0 0-1 0-0 0-2 ee SW by W? 4.2 9.4. SW by W. Clouds moving from W by S. WwW. Wie W byS. 1 WSW:WSW:W:NW?ll § SW. 0 NW by N: W? NW by N: W? W by S. WNW. WNW. WNW. SHAENSNSD SHAANOF RNWON Cm H (CO WJ oOo ows :. Dd. i), ». ). 2, OBSERVATIONS, OCTOBER 16—22. 1843. SPECIES OF CLOUDS, &c. . Mottled, woolly, and linear cirri, cirro-strati + cirro-cumulo-strati to N.; cumulo-strati on E. horizon. . Cirro-cumulo-strati and woolly cirro-cumuli + cumuli to E. Scud. Id. + cirrous haze. Cirrous clouds 2 HGlES Auroral light to NNW ? Thick cirrous clouds; scud below to N. Seud + cirrous clouds and haze; stormy-looking to SE.; a few drops of rain. Scud ; rain, hail, and sleet. lighky Gy ates id.; Cheviot white. Id.; heavy shower of hail and sleet from 2" O™ till 25 15™ when it began to snow. Id.; heavy showers of snow and rain since last observation ; breaking to N. . Cirro-cumuli and cirrous haze, stationary ; scud and loose cumuli on horizon; showers. Scud ; a few drops of rain. Scud to E. . Cumulo-strati on E. horizon; cirro-strati to N. . Cirro-cumulo-strati + cumulo-strati on E. horizon. . Well-defined cumulo-strati to NE.; cirrous-sided to E. and SE. . Cumulo-strati, with cirrous crowns, or changing into cirro-strati or sheets of cirri. . Loose and cirrous-edged cumuli + cumuli, ‘crowned with cirri and apparently falling in snow. . Loose cumuli. Id. on E. and N. horizon. . Cirro-strati to E. . Cirro-strati on E. horizon; cumuli in zenith. . Woolly cirri +— patches of mottled cirri. . Woolly, mottled, and linear cirri and cirro-strati. Cirro-strati to S. . Cirrous haze and cirro-strati on N. and E. horizon. Id. Id. Id. Scud; cirro-strati, cirrous clouds and haze. Id. + thick cirrous clouds and haze. . Smoky scud +~ sheets of faint woolly cirro-cumuli. . Cirro-cumulo-strati and large woolly cirro-cumuli; cirro-strati on E. horizon. . Scud + cirrous clouds. . Thin smoky scud: woolly cirro-cumuli: woolly cirri: mottled cirri. Scud + cirrous clouds. Id. + cirro-strati to N. Id.; light shower since last observation. Light rain. Patches of thin smoky scud, low: thick dark mass of cirrous clouds and haze. Id.: id. ; sky to N. and W. Wooliy cirro- cumuli and cirro-strati, moving slowly ; sky to W. and N. , Loose cumuli. . Loose woolly cirro-cumulous cumuli. Seud to E. + cirro-cumuli and cirrous haze to W. 3. Haze near horizon; sky hazy. . Cirro-strati scattered over the sky. 175 Observer’s Initial. Wiss nwses we sesedsuds wusewenns dusesdnnwsee wegerungs wwoseay 176 Dairy METEOROLOGICAL rr THERMOMETERS. ANEMOMETER. Gottingen PirG Mean Time of METER f Pressure. Corrected. s Wet. Diff. Dinechiones Clouds moving from Observation. Wind. Pres. a. Oct. 22 W by N: WNW. W by N: W by N. W by S: WNW. WOw. W by 8. W by 8. W by 8. Oct. 23 LPORSCS POWN OAH WH? SW by W. SW. SW by W. WSW. SW by W. SW by W. WSW. WSW. WUIMSCOKHEAG Nw NW. NW. m. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 HOOK DOK OO LO ONWOFrR ON DW OH o tS SOF SSNSH SHDRNS SWMDRNOSONSOD SODE aw OWN © O&O OBSERVATIONS, OCTOBER 22—28. 1843. SPECIES OF CLOUDS, &c. . Cirro-strati to E. Thin seud, moving quickly : diffuse, woolly, and mottled cirri and cirro-cumuli. . Scud : woolly cirro-cumuli, woolly cirri and cirro-strati. Id.: woolly cirri. Cirrous scud +~ cirrous clouds and haze. Scud + cirri. Id. Id. Id. Homogeneous ; a few drops of rain; wind in gusts. . Thin smoky scud : strata of woolly and woven cirri and cirro-cumuli + cirro-strati to E. . Loose scud +~ cirro-cumuli and cirrous clouds to S. . Seud ; a slight shower lately. . Light rain. Scud + cirrous clouds ; a few drops of rain ; occasional showers. Id. + cirro-cumulous scud to S. Streaks of cirro-strati to N. and SW.; hoar-frost. . Patches of cirri + cirro-strati to SE. and N. Woolly cirri + id. S.; scud to W. . Scud and loose cumuli +~ patches of cirri and cirro-strati. . Loose cumuli +— patches of cirri and cirro-strati. Id.: woolly cirri, moving very slowly + cumuli on S. horizon. . Woolly cirri; patches of scud. Masses of scud. Much lightning without thunder seen about 8" 20™ by Mr Rule, the land-steward. Patches of cloud. . Cirro-strati, chiefly to N. and E.; hoar-frost. . Sheets and patches of woolly cirri. . Cirro-strati and patches of cumuli on’E. and NE. horizon; a pate of cirrus to W. . Loose cumuli to 8. and on N. horizon. Loose cumuli. . Masses of cumuli near horizon; cirrous haze to E. and S. . Loose cumuli. . 3. id); very faint Auroral light, low on N. horizon. J . Auroral light to N., more distinct 10™ ago, when it was an arch 8° altitude, stretching from NW. to N.; no Aurora was visible at 9%. . Hoar-frost. . Cirro-cumuli and linear cirri to SW. , Masses of scud : large cirro-cumuli + linear cirri and cirro-strati to E. and SH.; cirrous haze to S. . Thick mass of cirrous clouds and haze, with thick linear cirri, the motion scarcely perceptible + masses of . Patches of scud +, very thick woolly and diffuse cirri obscuring the sun. [scud to S. and SE. . Very thick, homogeneous cirrous mass. 2 a J 2. Cirro-cumuli, fine woolly linear, and mottled cirri + loose cumuli on SE. horizon; cirrous haze on horizon. J ) 3. Hazy clouds. D Id. . Very dark; light rain. . Scud ; light rain. J 2. Loose scud; drizzle; Scotch mist. ) Id ) . Scud and loose cumuli; breaking to E. . Loose scud : woolly cirri +- diffuse cirri to W. . Scud. Id.; occasional slight showers. MAG. AND MET. oss. 1843, 2x Wii Observer’s Initial. Zaaqn Seger Here seseuy seeggeguy agunseshn sear edsuw Heer eqeeur | 178 DAILy METEOROLOGICAL caane THERMOMETERS. ANEMOMETER, Gottingen Bawo Mean Time a Rain 4 of METER Max. Given, Pressure. | Direction of || Clouds moving from . Corrected. 5 3 iff. i SEE ne A Observation. and Min. Moxa Spee Wind. id. oh, i. in. in. lbs. lbs. Oct. 29 0 O . eta eee ond . 4:3 2 30 2 SSSoHHHSS > N PFPwnwnoornNnoan WNW : WNW? WNW : SSW. SSW. NE: SSW. SE. SE by E: SE? SE by E: S by W. S by E: S by W. S:Sby W. S by W: S34W. eeoorreosso SCONNWNe Ww wPD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE. SSW. 45-6 ‘ ; 5 5 SS : a wiw coo oocococecse Nov. 34 01 40™. New floss silk put upon the wet bulb thermometer, the other having become quite green. Nov. 34 20%. The reading of the barometer is perhaps 0-05 inch too low. OBSERVATIONS, OCTOBER 29—NOVEMBER 3. 1843. 179 SPECIES OF CLOUDS, &c. Observer’s Initial. | 8. Sky nearly covered with thin clouds and haze. 0. Loose cirro-cumuli, woolly cirri, and cirrous haze. 2. Dense cirro-stratus ; patch of scud to SE.; patch of sky ; light mist. 0. Homogeneous cirrous mass. 2. iid: ; light rain. 4’, Id.; id. 6. Scud + homogeneous mass of clouds ; light rain. 18. Light rain. U Continuous rain. . Clouds to SE. . Cirri and cirro-strati on E. horizon. A large flock of wild geese seen. 3 Id. Id. . Loose cumuli to N. and W.: diffuse cirri. [E. horizon. Loose cumuli to S., lately covering the sky : light cirri, moving quickly «— cirrous haze and cirro-strati on Woolly and diffuse cirri + cirrous haze on horizon. Cirro-strati to SE. . Large woolly cirro-cumuli: diffuse cirri, becoming haze. 3. Scud to E. ). Cirrous seud, moving very slowly + patches of cirro-stratus. ). Loose cirro-cumulous cumuli: varieties of cirri, becoming haze to N. and E. ) 4 SWS Rye NOW . Cirro-cumulous scud : woolly, linear, flame, and diffuse cirri. : Id.: id. }.. Loose cumuli: reticulated and linear cirri. Linear and diffuse cirri; loose cumuli round the horizon. }}. Large woolly cirro-cumuli + patches of cirri. }. Quite overcast ; a streak of light to E. }). Cirro-cumulo-strati + cirro-strati to E. §. Thin smoky scud : cirro-cumulo-strati. }. Woolly cirro-cumuli + cumuli on N. horizon; dark and hazy, with scud to E. . Seud. }. Two strata of scud +- cumuli on HE. horizon ; haze on horizon. . Seud ; slight fog. . Scud and loose woolly cirro-cumuli. Patches of scud and cirro-strati on horizon. widduwwds wedduwdd we dds weeds Clouds on E. horizon. 18h 28m, A meteor was seen moving from about 30° to the S. of the zenith towards E. by S., it disappeared at an alti- tude of about 10° above the SE. point of the horizon, leaving a narrow train of sparks; it was of a bright white colour, apparently about 10’ to 15’ in diameter (about the size of a cricket-ball): only about 30° of its course was seen. Loose seud : cirro-cumuli and cirro-strati to E. Thin scud : dense semifluid-like cirro-stratus over the sky. mi ds: id. See note below. Scud : large woolly cirro-cumuli + cirro-strati to E. Woolly, mottled, and dense diffuse cirri +— cirro-strati on horizon all round ; dark cirro-strati on E. horizon. Loose cirro-cumuli + diffuse cirri to W.; cirro-strati round horizon ; slight fog on the ground. Scud. Sheets of cirrous haze or thin cirro-strati; lunar corona and portion of a halo. Scud; dark to NW. Loose scud : large woolly cirro-cumuli and woolly cirri. Id. + cirro-strati and cirrous haze to E. wad wedduued 4 Noy. 32.02 40m, Quite calm. A sound heard to K., gradually increasing in intensity, and then gradually subsiding, like a strong Wil blowing through a mass of leafless trees. At 52™ Kelso town clock (4 miles distant) was heard very distinctly to strike 12 o’clock. 180 Gottingen Mean Time of Observation. Nov. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SSooegge SSeS BAROo- METER Corrected. in. 29-310 347 Dry. DAILy METEOROLOGICAL THERMOMETERS. Wet. ee ee re me a NS) ee CAT COLON w BOKRORUH US HN oNaoUH wb oS Max. and Min. Pressure. | Max. ANEMOMETER. Direction of Pres Wind. WNw 4N. Clouds moving from SW : SW by 8. SW by S. SW by 8. SW by §, SW : SW. SSW?. W by S: WSW : SW. SW ?: SW by W. WSW : SW by W. W by S. W by 8. WSW 3 W. — t PNSONS2 SHR PWNSONSH SODANS SEDER OF ‘OBSERVATIONS, NOVEMBER 4—10. 1843. SPECIES OF CLOUDS, &c. . Scud in eddies turning to N.: cirrous-edged cumuli and cumulo-strati; a stratum of cumuli extending from SSW. to ENE., which is scud beneath moving in different directions ; splendid solar rays cross the notches of the clouds reaching about 70° towards the zenith. Loose cumuli and scud +~ ranges of cumuli. Id. + id. Id. Teds; passing showers. . Masses of scud, moving quickly: patches of mottled cirri. . Scud. Id., moving very quickly : cirro-cumulous scud, moving very slowly : woolly, mottled, and diffuse cirri. . Loose cumuli on NE. and S. horizons: large woolly cirro-cumuli. . Seud: large woolly cirro-cumuli + cirro-strati on E. horizon. . Scud and loose cumuli. . Loose cumuli to N. + cumulo-strati on 8. horizon. . Scud +- cumuli on S. horizon; a few drops of rain. . Cirri and patches of scud. . Sky covered with thin misty scud ; faint lunar halo shortly after this about 20° radius. . Homogeneous scud ; light drizzle. . Thick scud, chiefly to E. : patches of cirro-strati to W. . Scud and loose cumuli. . Masses of loose cumuli. . Masses of woolly cirro-cumuli and cirri + loose cumuli and scud near S, and NW. horizon. . Scud + cirro-strati and cumuli on horizon; rainbow. . Seud to W. Seud ; occasional showers. . Large woolly cirro-cumuli. . Large thin woolly cirro-cumuli + scud passed off to W. with light rain. . Scud and cirro-strati on E. horizon. . Cumuli on NE. horizon ; loose cumuli on Cheviot. . Loose cirro-cumuli and cirro-strati + cumuli on NE. and SE. horizon. . Cumulo-strati round horizon + cirro-strati to S. . Loose cumuli round horizon ; a shower of snow ? passed along to the N. and E. half an hour ago. . Masses of scud and loose cumuli. . Loose cumuli. Patches of scud. Scud + cirro-strati to E. . Loosely mottled cirri and cirrous scud. Woolly, linear, and mottled cirri + scud and loose cumuli to SE. Woolly cirri and loose cirro-cumuli + patches of scud ; cirro-strati on horizon. Woolly and flame cirri, cirrous haze and cirro-strati: lines of patches of cumuli to N. . Thick woolly cirro-cumuli; when it became overcast about an hour ago, the clouds were very fine cirro-cumuli which gradually became thicker and larger; they radiate from NNW.; masses of cirri on E. horizon. Dense cirro-stratus. Nearly homogeneous. Thick mass of clouds ; a few flakes of snow. Light rain. Id. . Woolly cirri, cirrous haze and cirro-cumuli; moving very slowly + loose scud and mist to N. . Dense cirrous clouds ; foggy. dis scud occasionally. Id. Id. MAG. AND MET. oBs. 1843. 22 181 Observer’s Initial. wesdsaunw | Wesqdrn aguq Sedguy seeegdsun wgnndsesuw 44 4eqqeru 182 DaILy METEOROLOGICAL Ee THERMOMETERS. ANEMOMETER,. Oo Moet ARO- ae an oo 5 Max. bites Se Direction of || Clouds moving from Observation. Corrected.|| Dry. Wet. Diff. and Min. Abc. | Peele Wind. d. ae in. P i e 2) in. Ibs. lbs. Nov. 10 8 0 || 29-471 || 39-3 | 39-1 | 0-2 0-0 | 0-0 10 0 524 | 38-9 | 38-8 | 0-1 0-0 | 0-0 18 0 || 29-710 | 44-3 | 44-0 | 0-3 0-2 | 0-0 N? 20 0 766 | 44.0 | 43-3 | 0-7 | 416 0-3 | 0-1 NNW. NNE. 22° .0 823 | 46-1 | 45-2 | 0-9 | 5, . 0-4 | 0-2 | NEbyN. NNE : NNE. Nov. 11 0 0 866 || 47-6 | 45-7 | 1-9 0.098 || 9°53 | O-1 NNE. NE 2 0 877 || 48-0 | 46-3 | 1-7 0-5 | 0-2 | NEbyN. NE 4 0 917 || 45-6 | 43-8 | 2-8 0-3 | 0-0 | NE by N. ENE 6 0 941 || 43-4 | 42-0 | 1-4 0-1 | 0-0 ENE. 8 0 957 || 42-8 | 41-7 | 1-1 0-1 | 0-0 10 0 980 || 41-1 | 39-9 | 1-2 0-0 | 0-0 SSE. Noy. 12 0 0 . i 0-3 18 0 || 29-909 || 40-6 | 39-6 | 1-0 0-7 | 0-0 W. 9-8 20 0 926 | 39-4 | 39-0 | 04 | 45.5 0-0 | 0-0 SW. 0:0 22 956 | 39-0 | 39:0 | 0.0 | sor 0-1 | 0-0 SSW ? SW. 4.0 Nov. 13 0 0 968 || 42-6 | 41-1 1:5 0.035 || 92 | 1 SSW. SW. 1-5 PTCA 970 || 44-7 | 42:9 | 1-8 0-2 | 0-2 S by W. Ww. 3- 4 0 971 || 41-4 | 40-0 | 1-4 0-2 | 0-1 S by W. WNw. 0-3 6 0 986 || 38-9 | 38-1 | 0-8 0-3 | 0-1 | SWbyS. Ww. 6-0 8 0 996 | 38-0 | 37-4 | 0-6 0-2 | 0-0 9-8 10 0 995 || 37-1 | 35-9 | 1-2 0-3 | 0-1 SWHS. 0-5 18 0 || 30-013 || 31-0 0-2 | 0-0 NW. 8. 20 0 045 || 30-3 vee 47.9 0-0 | 0-0 NNE 22, 10 073 || 35-0 | 32-7 | 23 B65 0-2 | 0-2 | Nby W. 0-5 Nov. 14 0 0 091 || 40-8 | 38-1 | 2-7 0.000 | 93 | 0:2 | Nby W. NE. 1 25,0 092 || 42:0 | 39-0 | 3-0 1:0 | 0-5 Niw. NNE. 3 4 0 095 || 42-0 | 38-9 | 3-1 10 | 0-5 | Nby Ww. “ 6 0 116 | 40-9 | 38-3 | 2-6 0-6 | 0-2 NNW. N by E. 8-( 8 0 145 || 32-8 | 32-2 | 0-6 0-3 | 0-6 NNW. 0-1 10 0 143 || 34-2 | 34.0 | 0-2 0-0 | 0-0 8-( 18 35 || 29-993 || 34:3 | 33-4 | 0-9 0-1 | 0-0 20 0 961 || 36-9 | 34:9 | 2-0 0-2 | 0-2 SSW. NNW. | 22 0|) 907 | 37-4 | 368 | 06 | 9°) 0-7 | 0.2 | Swoys. SW: NW. | Nov. 15 0 0 857 || 39-1 | 38-9 | 0.2 0.072 | 09 | 0-5 | SW4w. Sw. 2 0 7G) || 37:65 | 373° |) OS 2.2 |16 | SWiwW. Sw. 4 0 652 || 39-6 | 39:0 | 0-6 25) | ez SWH8s. ’ SW: W. 6 0 616 || 42-4 | 41-8 | 0-6 3-8 | 0-8 Wsw. Sid) 661 || 43-0 | 41-3 | 1-7 0:7 | 0-7 NNW. 10 0 746 || 38-4 | 36-9 | 1-5 0-9 | 0-0 | Nby W? 18 0 || 29-829 || 34-2 | 32-6 | 1-6 0-3 | 0-1 Ww. 20 0 871 | 32-6 | 31-9 | 0-7 | 44, 0-0 | 0-0 NYW. 22 0 896 | 35-1 | 34.5 | 06 | 415 0-2 | 0-0 NNW? Nov. 16 0 0 880 || 39-8 | 37-9 | 1-9 0-200 || 9:1 | 9:0 NNW. yO 837 || 42-7 | 40:5 | 2.2 0-1 | 0-0 4 0 809 || 39-7 | 38-0 | 1-7 0-2 | 0-0 N by W. 6 0 787 || 36-8 |.36-0 | 0-8 0-2 | 0-0 8 0 726 || 38:0 | 37-5 | 0-5 0-1 | 0-0 10 0 693 || 39-9 | 39-0 | 0-9 0-5 | 00 | SWbyS. 18 0 | 29-381 | 47-6 | 45-7 | 1-9 3-0 | 40 | SSW4W. 20 0 339 | 47-8 | 46-8 | 10 | yon 2-9 | 1.0 | SW byS. Sw. 22550 288 | 49-2 | 47-4 | 18 | 965 3-9 | 1-2 SSW. SW by S: SW. OBSERVATIONS, NOVEMBER 10—16. 1843. 183 SPECIES OF CLOUDS, &c. Observer’s Initial. 8. Dense cirrous clouds. 18. Light rain. 20. Thin scud. OTS Id.: thicker scud. 0. Scud. . Id. and loose cumuli. Sse aearo 4 . Cirro-cumulous scud. 18. Thin scud + large cirro-cumuli. 20. Scud and large woolly cirro-cumuli. 22. Loose large cirro-cumuli. 0. Id. |) 2. Loose cumuli. | 4. Patches of scud +- mottled cirro-strati to NW.; cirro-strati and cirrous haze on horizon. ) 6. Scud and loose cumuli + cirro-strati to NW. } 8. Sky to NW.; an Aurora seen beyond the clouds, no streamers or corruscations visible. }10. The Aurora has disappeared. 18. Scud. 20. Thin cirro-cumulo-strati +- cumuli to E. 4/22. Cumuli to E.; patches of scud to N. and S. 0. Patches of scud + cumuli to E. Waa been ss ww sdwew 4s = woddgundd deeddduds | 2. Scud and cumuli. 4, 6. Scud and loose cumuli. 8. Cirro-strati? to N. 0. Sheets of cirro-strati?; faint Auroral light to NNW ? 8. Homogeneous. »0. Dense mass of cirro-cumuli lying in strata and ridges N. and S., moving very slowly; the clouds tinged with red to E.; in a few minutes the clouds to E. are of a very bright golden yellow, and slightly tinged with it all round the horizon. 2. Gray scud to W.: a homogeneous mass of clouds, milky, cirrous, mottled, &c., cirrous scud. 0. Patches of loose scud + homogeneous mass of clouds above ; light rain. 2. - id. ; heavy rain. 4. Two currents of scud ; light rain. 16. Scud ; light rain occasionally. 18. Scud 2 0. Sheets of cirro-strati. . Patches and streaks of light clouds. . Cirro-cumulo-strati + cirro-strati on E. horizon; red to SE. . Dark, mottled, loose cirro-cumuli + dense cirro-stratus. . Large woolly cirro-cumuli +— large feathers of cirri; hazy to N. and E.; sky milky. . Thick homogeneous mass of cirri; faint solar halo about 20° radius. 4. Cirro-cumuli + cirro-strati in thick cirrous haze on horizon. 3. Cirro-strati and cirrous haze. 3. Dark; light rain. ). Cirrous clouds and haze. 3. Thick scud. . Scud; a few drops of light rain. », Thin scud: thick woolly cirro-cumuli; cirrous haze; blue cirro-strati reposing in the gray mass to E.; a few drops of rain. VOoONOoe 184 Gottingen Mean Time Observation. of eves Nov. Nov. Nov. Nov. Nov. Nov. a. 17 18 19 20 21 22 o eooolcococeoco ocoocooqcocqcecqc Coco oc aoc o& oO oc 6 Oo Soo 1o BARo- METER Corrected. Dairy METEOROLOGICAL THERMOMETERS. Dry. | Wet. | Dia. |, Bae 50-9 | 49:0 | 1-9 50-6 | 47-7 | 2-9 45-6 | 42-5 | 3-1 39-9 | 37-6 | 23 38-9 | 37-8 | 1-1 37-9 | 37-2 | 0-7 37-0 | 35-4 | 16 36-6 | 36-0 | 0-6 are (aaa | ae pete 41-3 | 39-2 | 2-1 41-0 | 39-2 | 18 40-0 | 38:0 | 2-0 37-0 | 35-6 | 1-4 35-9 | 35-0 | 0-9 35-8 | 35-2 | 0-6 41.9 30-3 41:7 | 41-0 | 0-7 42:0 | 41-5] 0-5 42-9 | 42-7 | 0.2 Em 39-6 | 38-9 | 0-7 43-0 | 40-6 | 2-4 42-8 | 39-3 | 3-5 39-8 | 37-0 | 2-8 36-0 | 35-0 | 1-0 40-3 | 39-8 | 0-5 40-2 | 39-9 | 0-3 42-2 | 41-8 | 0-4 42.0 | 39-9 | 21 | 3e. 42-9 | 41.0 | 1-9 42:3 | 40-9 | 1.4 41-6 | 40-1 | 1-5 41-0 | 40-1 | 0-9 40-8 | 40-5 | 0-3 50-0 | 49-8 | 0-2 46-3 | 44-2 | 2-1 46-8 | 44-7 | 21 46-0 | 44-1 | 1.9 | 30 44-3 | 40-8 | 3.5 44-9 | 40-9 | 4.0 42-7 | 38-8 | 3.9 37-0 | 36-0 | 1-0 36-7 | 35-6 | 1-1 37-8 | 36-3 | 1-5 35-9 | 35-8 | 0-1 36-8 | 36-2 | 0-6 35.9 | 35-1 | 08 | 503 38-7 | 38-1 | 0-6 39-0 | 38-1 | 0-9 38-1 | 37-6 | 0-5 36-9 | 36-3 | 0-6 36-8 | 36-0 | 0-8 33-0 | 32-9 | O-1 RAIN GAUGE. in. 0-037 0-067 0-146 0-020 0-460 0-007 ANEMOMETER. Pressure. Direction of Mec) ere lbs. lbs. 2-5 1-4 SSW. v. 2-0 | 2-3 SSW. 2-4 | 0:3 SW by S. O02) ont Sw 2 0-3 | 0-3 SSW 0-3 | 0-2 SW by S? 1-4 0-4 SW. 1-9 | 0-3 SW 358. 1-6 | 0-4 SSW. 2-1 0-6 SSW. 4-5 | 0-7 SSW. 2-6 | 0-7 SSW. 1-3 | 0-6 SSW. 1-4 | 0-2 SSW. 1-9 1 O =i SSW. 0-8 2-6 | 0-1 E by N? 0-5 | 0-2 NNE? 0-2 | 0-0 5-1 1-7 NW. 2-6 1-3 NW 4 W. 2-5 | 0-9 W by N 0-7 | 0-3 W by N. 0-3 | 0-1 Sw ? 0-1 0-0 0:2 | 0-0 0-4 ae 1-0 | 0-2 SW 3W. 0-5 | 0-5 SWS. 0:3 | 0-2 SSW. 0-2 | 0-0 0-2 | 0-0 0-2 | 0-0 3:6 | 3-8 SSW. 6-2 1-2 SW by W 4-6 | 2.4 WSWiS 4-1 1-6 | SW by W 7-2 | 3-2 NW. v 4-3 2-5 NW iN 2-0 | 1-7 W by S 1:0 | 0-1 WSwW. 0-6 | 0-5 SW. 0-8 | 0-6 SW 4W. 0-2 | 0-1 Sw ? 0-3 | 0-0 SSW ? 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 °0:0 | 0-0 0-0 | 0-0 Clouds moving from Ww? WSw. W by S. WNW. WNw. WNw. h. 0. 2. 4, PN SNSM SHBRNSHSH SHBBNSNSH SHAPNS OBSERVATIONS, NOVEMBER 17—23. 1843. SPECIES OF CLOUDS, &c. Scud + dense cirro-stratus ; light drizzle. Id. + fine feathers of beautifully mottled cirri pointing NNE.; cumuli and cirrous haze to E. Masses of loose-edged cumuli. . Scud to W.; patches of cirri. . Cirrous scud. . Cirro-strati. . Quite clear. . Loose scud ; light showers. Id.: diffuse cirri + nimbi to S. with fine cirrous crowns; cirro-strati to E. Nearly as at 22; cumuli to E. Cirrous-crowned nimbi and scud, masses of woolly and diffuse cirri. Cumuli; nimbi and diffuse cirri on horizon. . Thin scud ; cumuli on horizon. . A patch of scud to NW.; passing showers and masses of nimbi. . Cirrous scud 2 . Very dark ; a few drops of rain. . Scud; light rain. Id. ; id. Id. + homogeneous above; light rain. . Lines of patches of loose scud : woolly cirro-cumuli and cirri + loose cumuli to S. . Cirro-cumuli, cirro-strati and cirrous haze to E. . Scud to SW. Scud. Id. Id. Seud and nimbi; passing showers. Masses of scud and loose cumuli: fine cirro-cumuli + cirro-strati on horizon; cumuli on Cheviot. Linear cirri and patches of cirro-cumuli + thick cirrous haze and diffuse cirro-strati; masses of loose cumuli to NW. Thick, woolly, and diffuse cirri and cirrous haze +- mass of scud to NW. ; cirro-strati on horizon. Thick, dense, cirro-cumulous mass, like a semifluid. Light rain. Rain; very dark. Light rain ; the wind feels very warm. Scud. Id.; slight drizzle. . Loose scud + large cirro-cumuli to S.; slight shower. [much. Scud and loose cumuli. At 23% 10™ the wind had shifted to WNW. blowing from 4 lbs, to 7 Ibs., varying Seud, loose cumuli. Id., id. . Cirro-strati on horizon. . Thin scud. . Sheets of cirrous scud ? to E. and 8. . Woolly cirro-cumuli: woolly cirri. . Woolly cirri and cirro-cumuli +~ cirro-strati and cirrous haze. . Cirrous scud, woolly cirri, and cirro-cumuli, all moving very slowly. . Masses of scud +~ thick cirrous mass. . Dense cirrous mass. . Clearing off from SW. . Clouds to E. MAG. AND MET. oss. 1848. 3A waddwwwad nods 185 Observer’s Tnitial. qaeneeduw feuwdddew ddndddsuw ddunddsuw 186 DAILY METEOROLOGICAL hie THERMOMETERS. ANEMOMETER,. Gottingen BAR. eon aaah he et Pressure. | Hirection of || Clouds moving from Observation. Corrected.) Dry. | Wet. | Diff. |,,aMin. M Wind. ax. | Pres. d. h m. in. G ° O oe in. Ibs. lbs. 0-1 Nov. 23 18 0 || 29-253 || 28-3 | 28-3 | 0-0 0-0 | 0-0 0-3 20 0 292 || 28-9 | 28-7 | 0-2 | oq, 0-0 | 0-0 Ww 4-0 22 0 323 | 32-2 | 31-8 | 04 | O66 0-0 | 0-0 SW 6-0 Nov. 24 0 0 346 || 34-2 | 33-7 | 0-5 o.og4 || OO | 0:0 3-0 2 0 355 || 36-9 | 36-0 | 0-9 0-0 | 0-0 WSsw. 9.0 4 0 368 || 34-5 | 34-1 | 0-4 0-0 | 0-0 wesw. 7-0 6 0 398 | 30-6 tn oe 0-0 | 0-0 Wsw. 2. 8 0 428 || 31-0 ant = 0-0 | 0-0 0-2 10 0 460 || 34-0 | 32-6 | 1-4 0-0 | 0-0 10-¢ 18 0 || 29-430 || 29.5 ie at 0-0 | 0-0 2 20 O 429 | 29-8 Si oat tae 0-0 | 0-0 10 22 0 423 | 33-3 | 31.6 | 1-7 | 579 0-0 | 0-0 10-€ Nov. 25 0 0 390 | 34-3 | 33-6 | 0-7 0006 | OO | 00 Ww. 9. 2 0 383 || 36-7 | 35-6 | 1-1 0:0 | 0-0 s 9. 4 0 387 || 35-3 | 34-7 | 0-6 0-0 | 0-0 WwW 9. 6 0 364 || 30-2 a a 0-0 | 0-0 : 8 0 366 | 29.3 0-0 | 0-0 10: 10 0 339 || 30-4 : Fs 0-0 | 0-0 10 37-0 Nov. 26 0 0 + | Sag [0274 || 1-0 18 0 || 29-017 | 50-1 | 47-8 | 2-3 4:5 | Bt SSW. sw? 20 O 004 | 49-9 | 47-8 | 21 | 0. 4.4 | 24 SSW. SSW. 22 0 007 | 50-0 | 47.5 | 2-5 ie 4.7 | 1-6 SSW. SW Nov. 27 0 O 009 || 50-3 | 47.8 | 2.5 ‘ 0-121 3:0 | 1:0 SSw. Sw. 2 0 010 || 49.4 | 47.7 | 1-7 1-6) | 0-7 SSW WSW : SW. 4 0 076 || 49-0 | 47.3 | 1-7 1-7 | 0:9 SW SW by W: Wbdy8 6 0 133 | 48-9 | 46.9 | 2.0 2-0 | 1-5 SWis. WSsw. 30 199 || 48-8 | 46.6 | 2-2 1-8 120-7 SW. Ww? 10) 0 278 || 47-8 | 45.7 | 21 1-2 | 0-4 | WbySs we 18 0 || 29-623 | 48-7 | 46.3 | 2.4 0-9 | 0-2 WwW 20 O 682 || 47-0 | 45-3 | 1-7 | 515 0-3 | 0-0 w. 22 0 750 || 48-0 | 45.8 2.2 45-9 0:2 | 0-0 SSW? W. Nov. 28 0 0 759 | 49-0 | 45.5 | 3-5 Hog | 0-7 | 9-5 Wwsw? Ww. 2 0 760 || 47-7 | 45.9 | 1-8 0-9 | 0-2 Wsw? WwW. 4 0 715 || 48-5 | 46.2 | 2.3 1-2 | 0-5 Swis SW 6 0 633 | 49-6 | 47.6 | 2-0 1:0 | 2-7 SW 8 0 576 || 51-3 | 50.0 | 1-3 2110-9 | SWiWw 10 0 656 | 49-7 | 45.0 | 4.7 4-7 | 2-7 | WNW. v 18 0 || 29-824 || 46-7 | 42.90 | 4.7 4-5 | 3-0 WYw. | 20 0 || 29.866 | 45-1 | 41-5 | 3-6 | 59.9 42/41 | WNw. W. . 22 9 || 29.910 |\"45-4 | 41-3 | 4:1 | 444 4-8 | 2.5 NW. Nov. 29 0 0 || 29-932 | 46-9 | 42.2 | 4.7 0-008 | 4-7 | 4-3 | Nwaw. 2 0|| 29-979 | 47-7 | 42.3 | 5.4 4-3 | 1-0 | whys? 4 0] 30-044 || 45-6 | 41-4 | 4.2 1-4) 0-1 6 0 || 30-098 | 38-5 | 37.1 | 1-4 0-2 | 0-0 8 0 || 30-141 || 37-0 | 36-0 | 1-0 0-1 | 0-0 10 0 || 30-165 || 34-0 | 33-8 | 0-2 0-1 | 0-0 18 0] 30-106 | 33-0 | 33-0 | 0-0 0-0 | 0-0 § 20 0 || 30-051 | 40-3 | 40-1 | 02 | 4. 0-1 | 0-0 + 22 0 | 30.013 | 43-8 | 43-2 | 06 | oo 0-7 | 0-0 I Nov. 30 0 0 || 29-934 | 44-0 | 43-5 | 0-5 ; 0-010 | 02 | O21 | Sby Ww? h ’ 2 0|| 29-850 || 47-9 | 47-1 | 0-8 i 0-6 | 0-2 SSW. it 4 0] 29-766 || 49-1 | 48-2 | 0-9 2-2 | 1-2 | SSW4W. Sw. AL MONDO ae a SCHODRNWONSO!: OOS: GS 7 PP RNONS® OBSERVATIONS, NOVEMBER 23—30. 1843. SPECIES OF CLOUDS, &c. 187 Observer’s Initial. . Streaks of cirro-strati to N, and S. . Linear and woolly cirri; smoke shews the wind to be from SSE. - Woolly and linear cirri and cirrous haze. Id. id., cirro-strati ; masses of scud on N. horizon. Id. id. . Linear and flame cirri radiating from SW. : Id. . Sky covered with thin scud. . Clouds on horizon; cirrous haze. . Woolly cirri, cirrous haze ; cirro-strati to S. and E. Thick cirrous mass; shower of snow. . Large woolly cirro-cumuli, scarcely moving. . Cirrous scud and loose cumuli. . Cirrous scud and woolly cirri. . Cirrous clouds ; foggy. . Thick fog. Id. Scud. . Thick scud ; sky on NE. horizon. . Seud, in different strata +- woolly cirri; rain, rainbow. Scud, woolly and feathered cirri; light rain. . Thick scud : woolly cirri; drizzle. Two currents of scud ; shower. . Scud; light rain. Id. . Cirrous scud. 3. Seud. . Id. + woolly cirri; cirro-strati on E. horizon. 2. Id, + cirrous haze, linear cirri, and cirro-strati. ). Id. + cirrous haze covering the sky; the sun shining faintly. 2. Id. + dense cirrous mass; occasional drops of rain. Bd. + id. fo. id. +— id. ms iid. id. ; light rain. Cirrous haze to E.; scud to S. 3. Clear. ). Loose scud on S. horizon +~ cirrous haze on E. horizon. D. Id. ). Seud to SE. 3 Id. [scud. . Mottled, reticulated, and cymoid cirri, with cirrous haze, forming over a great part of the sky; masses of 3. Clear. 3. Cirrous haze to SW. ). Clear. 33. Seud. ). Homogeneous; cirro-strati on E. horizon. 2. Thin smoky scud + dense cirrous clouds. ).. Id. — id. ; light rain. D. Id. _ id. . Loose scud ; light drizzle. Swessastwnm sgunneeguw Gwe wes Hees nnses Hessen nds ws dsdrnwss 188 Gottingen Mean Time Observation. Dec. Dec. | Dec. of oo == — a) (J (lee) (=) =) o Soo Soe ero SS) Oo Sore Sooo. So Sioa > BARo- METER Corrected. DaILty METEOROLOGICAL THERMOMETERS. Max. Dry. | Wet. | Diff. |ananin. 49.0 | 48-3 | 0-7 50:3 | 494 || eo 43-3 | 47-6 | 0-7 33-6 | 33-0 | 0-6 31-6 | 31-3 | 0-3 a7 |'sg 08 4 a. 36:3 | 35-6 | 0-7 38-5 | 37-1 | 1-4 36:0 | 35-3 | 0-7 30-0 | 29-9 | 0-1 28.0 Ls A 27-3 | 27-1 | 0-2 32-9 | 32.2 | 0-7 40-9 | 40-0 | 0-9 38-8 42-7 | 41-8 | 0-9 | o.'3 45.0 | 44.2 | 0-8 46-6 | 45-2 | 1-4 47-6 | 46-3 | 1:3 45-1 | 44.5 | 0-6 44.9 | 43-6 | 1-3 42.2 | 41-3 | 0-9 48-1 a 38-2 49.9 | 48-0 | 1-9 48-8 | 47-7 | 1-1 48.8 | 47.7 | 1-1 fie 50-9 | 49-1 | 1-8 50-7 | 48-9 | 1-8 49-8 | 48-2 | 1-6 48-9 | 46-6 | 2-3 48-5 | 46-3 | 2-2 48-6 | 46-6 | 2-0 49.0 | 46-6 | 2-4 49-4 | 46-9 | 2-5 49-3 | 48-3 | 1-0 ae 50-5 | 47-6 | 2.9 49-1 | 45-9 | 3-2 46-2 | 43.8 | 24 44.7 | 41.0 | 3-7 41-8 | 38-0 | 3-8 40-4 | 37-3 | 3-1 42.0 | 39-0 | 3-0 44.5 | 40-8 | 3-7 44.8 | 40-6 | 4-2 BAe 43-3 | 40-7 | 26 46-3 | 41-3 | 5.0 44.3 | 40-9 | 3-4 44.9 | 41.0 | 3.9 RAIN GAUGE. 0-013 0:010 0-000 0-029 ANEMOMETER. meena. Direction of Max. | Pres. Wind. Ibs. lbs. 2-2 | 0-6 SW. 1-1 0-2 0:0 | 0-0 0-8 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0-0 | 0-0 0:0 | 0-0 0:0 | 0-0 0-0 | 0-0 0:0 | 0-0 0-0 | 0-0 0-2 | 0:3 WSW 1-0 | 1-5 SW 4W 2.0 | 0-3 SWiW 0-6 | 0-6 SWS 0-6 | 0-4 WSW 0-4 | 0-2 SWis 0-2 | 0-1 WSW iS 0-2 | 0-0 1-9 SW. 25 | 0-6 SW iS? 0-6 | 0-1 SSW 4 WwW? 0-6 | 0:3 SWis 0-9 | 0-3 | SWbyS8 0:8 | 0-4 SWiS 1-4 | 0-3 SWS 3-0 | 0:8 SW. v 3:0 | 0-5 WSW.v 1:9 | 0-8 SSW 3 W. Th | 287/ SW. v 5-2 | 3-8 SW. v. 6-8 | 2-6 SW. 3:0 | 0-8 SW.v. 3-1 2-1 SW. 2-6 1-8 SW. 4-4 1-9 SW. 3-9 | 3-6 SWiw 1-9 1-4 SW. 4-1 1-3 SW. v 4-1 2-1 W.y. 5-2 | 2-3 W. 5:5 1:3 W.v 4:8 | 3-0 W by N. 2.2 1:3 SW. v. 2-1 0-8 SW. v.. Clouds moving from SW. NYW. WSW ? WSW: W. SW by W: W. SW by W: WNW. W: WNW: Nw. WNW. WNW. Ww. WwW. W by S: W. Sw. SW by W: W by N. SW. OBSERVATIONS, NOVEMBER 30—DECEMBER 6. 1843. 189 a 3 SPECIES OF CLOUDS, &c. z Be Za (=) h. 6. Loose seud ; light drizzle. Ww 8. Id. ; id. B 10. Large woolly cirro-cumuli + cirrous haze to SW. B 18. Clear. Ww #20. Cirro-strati and cirrous haze to E. and S. : Wi #22. Thick, ribbed, and evenly mottled cirrous clouds, nearly homogeneous. B 0. As before, but much thicker. B 2. Irregular, hazy, woolly, and linear cirrous mass, with a little hazy sky in zenith; breaking a little. B 4. Cirro-cumuli of all varieties and forms, passing from the finest spots to the largest masses; some of them hanging like bags, lying in strata, and other forms ; in some places of a bluish-grey, with patches of whitish-yellow + hazy linear cirri under the cirro-cumuli to NE., radiat- ing from NNW. thick and hazy to E.; feathered and woolly cirri above the cirro-cumuli. W 6. Woolly cirri to S. WwW 8. Long ribbons of thin woolly cirri, radiating from WSW., of different lengths, some of them stretching from the WSW. point of the horizon to 45° past the zenith, i.e. 135°; the whole move from about NNW.; stars of small magnitude are visible through the strips; in passing over the moon they cause a small corona. B 10. Uncommonly thin haze over the sky ; streaks of ribbon-cirrito E. A beautiful lunar halo 23° radius, the complete breadth of the ring is about 4°. B 18. WwW 20. Scud +~ cirrous clouds. WwW 2. Scud: cirro-cumuli. Woolly and diffuse cirri cover the whole sky; strata of loose cirro-cumuli moving slowly : a great band of dense seud with attendant patches of loose thin scud, moving rapidly from WSW., the patches quickest ; the whole issues from a misty mass to SW., the patches moving over all parts of the sky and far below the cirrous clouds. B 0. Nearly as before, but the sky is more completely covered by thin smoky scud. B 2. Two currents of scud + cirri. Homzone B 4, Masses of loose smoky scud in two currents: large loose cirro-cumuli, moving slowly + cirrous clouds; bands of cirro-strati and scud near the W 6. Cirri and patches of scud; lunar corona. WwW 8. Scud + cirrous haze to HE. WwW 10. Id. B 118. Scud + cirrous clouds. B "20. Id. B 22. Loose scud : linear and mottled cirri. WwW 0. Scud + cirro-strati to E. Ww 2. Loose scud : large cirro-cumuli. WwW 4, Scud + linear cirri and cirro-cumuli. B 6. Scud + cirrous clouds. B BS. Id. Ww 0. Id., moving rapidly. WwW 18. Scud. B 20. Thin detached masses of scud, very low + the upper scud is red below. B 22. Scud + dense cirrous clouds; slight drizzle. Ww Q. Patches of scud, cirro-cumulous scud + the upper mass of cirrous clouds breaking up into woolly and linear cirri and cirrous haze. W 2. Masses of scud : woolly, mottled, and diffuse cirri and cirrous haze; part of a solar halo lately. Ww | 4. Scud on horizon ; nimbi to S., with cirrous crowns; very black to SE; beautiful strata of cirro-cumuli and mottled cirri, chequered in diffe- rent ways, the strata lying ENE. to WSW., but passing 20° to the S. of the zenith, B 6. Scud. in’ S. Id. W O; Id. WwW 8. Id. B 0. Id.; light rain. B 2. Masses of seud near horizon. WwW 0. Masses of thin scud ; passing showers. WwW 2. Id.; cirrous haze to E. and N. Ww 4. Masses of scud +~ linear cirri to SW., radiating from NNW.; cirrous haze on N. and E. horizon. B 6. Scud + patches of cirri to SE. B ‘ MAG. AND MET. oss. 1843. 3B 190 DaAILy METEOROLOGICAL pense THERMOMETERS. ANEMOMETER, Gottingen Rane - Quan: ; _ ——————_—_ ; : Die Ee pir, | Max: Ghee. Pressure. | Direction of || Clouds moving from ie Observation. Corrected. Dry. | Wet. ™+ Jand Min. eg rs Wind. Cloud ad h in. g : 2 & in, lbs. Ibs. 0—10. Dec. 6 8 O|| 29-902 | 46-6 | 42-8 | 3-8 4:4 | 3.9 W. W by N: NW. 7.4 10 0 940 || 43-5 | 40-9 | 2-6 4-2 | 0-0 W. 64 18 0 || 29-790 || 45-3 | 43.3 | 2-0 2-9 | 1-4:| SWHS. SW : WNW. 9-0 20 0 732 || 45-1 | 44-1 | 10 | yes 2-1 | 1-7 | SWHS. SW: WNW? 9-8 22 0 656 | 47-3 | 45-3 | 20 | go. 4-9 | 3-7 SW. v. SW: WNW: WNw. | 7.0 ee”) Geile cape eset lleacea Pathe 0-382. 3:5 s|oaa- logit re ae oie 4 0 556 || 54-0 | 50-8 | 3-2 2-4 | 1-4 SW. v. W by S: W. 10-0 6 0 544 || 53-6 | 50-7 | 2-9 - 1-9 | 0-4 Sw? 10-0 S00 584 | 53-6 | 50-9 | 2-7 3-8 | 2-6 |SW by W. v. W by N. 10-0 10 0 638 || 52-1 | 49.2 | 2-9 2:3) | dee WSsw. Ww. 3.0 18 0 || 29-837 || 44-6 | 41-7 | 2-9 1-8 | 0-6 | WbyS.v. WNW. 1a 20 40 856 | 45-3 | 419 | 34 | cog 0-6 | 0.2 wsw? WNw. 8-5 22 0 876 | 47-0 | 43-0 | 40 | 4a. 12 | 1-1 | WSWiS WNW 9.5 Dee. 8 0 O 888 || 48-3 | 44-7 | 3-6 0.253 2-3 | 1-0 Sw. W by N 9-5 2 0 865 || 48-2 | 44.3 | 3-9 3-2 | 1-8 Wsw. WNW 4 4 0 887 || 48-2 | 44-3 | 3-9 16 |1-:1 | WbySs WNW : WNW 6-( 6 0 914 || 47-6 | 44.6 | 3-0 1-6 | 0-3 Wwsw? WNW : WNW 355 8 0 919 || 47-0 | 44.7 | 2-3 1-4 | 0-5 WiN NW 3-0 10 0 947 | 46-7 | 45-0 | 1-7 0-6 | 0-2 W. NW? 2. 18 0 || 30-009 || 43-3 | 42-9 | 0-4 0-3 | 0-0 NW? 1: 20 0 | 30-016 | 45-3 | 44.9 | 0-4 | yoy 0-0 | 0-0 w. 22 0 || 30-024 | 47-2 | 46-0 | 1-2 | 415 0-0 | 0-0 SW by W: W 10: Dec. 9 O O|f 30-024 | 48-7 | 47-6 | 1-1 o-o1g | 92 | 1 | WSWES. Sw. 10-0 2 0|| 30-002 || 49-1 | 47-8 | 1-3 ; 0-1) 0-1 | SWa Ws SW: W. 10-( 4 0] 29.992 | 48-3 | 47-0 | 1-3 0-0 | 0-0 Ww r 6 0] 29-988 || 46-6 | 45-9 | 0-7 0-0 | 0-0 Ww 10. 8 0 || 29.984 || 45-3 | 45-0 | 0-3 0-0 | 0-0 Ww 10 0 || 29-970 | 46-0 | 45-5 | 0-5 0-0 | 0-0 10: 49.2 Dec. 10 0 O 38-7 0-0 18 20 || 29-894 | 44-3 | 42-4 | 1.9 0-7 | 0-1 SWHS. SW : WSW. 20 0 | 29-889 | 46-9 | 44-7 | 2.2 | 20, 0-2 | 0.2 | SSW4W. SW. 22 0 | 29-916 || 47-7 | 46.0 | 1-7 | jo5 0-9 | 0-0 . Sw by S 10-0 | Dec. 11 0 O|| 29-920 || 49-7 | 47-4 | 2.3 0-000 || 12 | 8 SW. v. Sw. : 2 0] 29-935 || 50-5 | 47-8 | 2-7 1-2 | 0.2 SW iS. Sw. 9-8 | &. 4 0] 29-966 || 48-7 | 46-9 | 1-8 0-4 | 0-2 SW. SW. 10-0 |B 6 0] 29-986 || 48-3 | 46-8 | 1-5 0-4 | 0-1 | SW4W. Sw. 10: 8 0] 30-023 | 47-5 | 46.3 | 1-2 0-1 | 0-0 SW F 10 O|| 30-044 || 44.2 | 44-0 | 0-2 0-0 | 0-0 SW? 7 18 0 || 30-123 || 46-3 | 45-6 | 0.7 0-0 | 0-0 9-8 | bi 20 0 128 | 43-1 | 43-0 | O1 | ,¥ 5 0-0 | 0-0 SW 2-0 | fl 22 0 152)|| 46-2 45-8 | 04 | Boe 0-0 | 0-0 Sw. 9:8 | F Dec. 12 0 O 151 || 49-0 | 47-6 | 1-4 : 0-0 | 0-2 SSW. Sw. 10-0 |.) 2 0 135 || 49-1 | 47-2 | 1.9 0-000"! 9:1 | o-2 | Swie. SW. 08 | lh 4 0 122 || 47-8 | 45-8 | 2-0 0-3 | 0-1 | SWS. SW. 98 | it: 6 0 118 || 47-0 | 45-0 | 2-0 0-5 | 0:3 SSW. Sw. 10-0 } 1 8 0 129 | 46-8 | 43-7 | 3-1 1-1 | 0.2 | SSW3W. 10 I 10 0 100 || 47-2 | 44-8 | 2.4 0-6 | 0-2 | SSW 4W. 10-0 |) 18 0 || 30-021 || 47-4 | 45-6 | 1-8 2-7 | 1:5 | SWHS. Sw? 104 i Dec. 62 84. The reading of the barometer is very doubtful, the observation was evidently hurried, and not entered into the note-book, cor i=) SODRNWON OO ON © OBSERVATIONS, DECEMBER 6—12. 1843. 191 SPECIES OF CLOUDS, &c. Observer’s Initial. Scud: sheets of cirri, crossed at right angles by linear cirri; coloured corona about the moon, first yellowish-white, passing into brown, blue, and green successively ; the radius of the outer circle being about 4°. At 8 15™ a distinct halo of 20° radius. Scud +— diffuse cirri and cirro-strati ; a few minutes ago there were a lunar halo and coloured corona. . Masses of thin scud : sheets of cirri; a coloured lunar corona; occasional drops of rain. Patches of scud: a thick cirrous mass over most of the sky ; light rain. [slowly . Small patches of thin scud : cirro-cumulo-strati and cirro-cumuli: woolly and diffuse cirri, moving very Scud: thick cirrous clouds. Id.; light rain. Two currents of scud. . Very thick scud. Seud ; a few drops of rain. Id. . Scud + cirri. Id. + linear cirri to EH. Id. + id. N. Id. + linear and motiled cirri to SE. Id. + patches of cirri. Id. : beautifully mottled and reticulated cirri in strata radiating from SSE. and WNW. Id.: streak of woolly cirrus. Id. + linear cirri and cirrous haze. . Patches of scud + linear cirri, cirro-strati, and cirrous haze; the linear cirri in short lines pointing SSE. and these in strata lying WNW. to ESE. wWanwsedeww Senn eequn 45 Scud + cirrous haze all round the horizon. 184 30™, Scud passing over the Moon produces a coloured corona; yellow, orange, blue, yellowish- green, and orange, are the colours from the Moon outwards ; the extreme radius being 6°, . Cirrous scud. . Scud : cirrous clouds. Id. + id. . Masses of scud: cirrous scud and cirrous clouds. . Cirrous scud and woolly cirri, moving very slowly. d Id. Zar w seer Overcast. Scud : patches of mottled cirri and cirro-cumuli, moving very slowly. Id.; clear on E. horizon. Id. [is from S. . Thin scud + mottled, woolly, and diffuse cirri and cirro-strati; wind in gusts, when blowing strongest it Id- + id. Thick scud. Id. Id. . Thin scud + cirro-strati to E. Cirro-cumulous scud ; cirro-strati to SW. Loose scud, moving quickly ; heavy dew since 18. Loose scud ; clouds blue, yellow, and gray. Scud. Id.; the lowest thinnest and moving quickest. Id. + loose cumuli to S. Id. Id.; Auroral light? to NNW. Id.; very dark. Thick scud. Zee Ser eras Hosen wss 192 Gottingen Mean Time of Observation. d. Dec. 12 tbo h 0 2 Dec. 13 0 2 4 6 Dec. 14 0 » 15.00 . 16 He a) 5 US ©) Dec. 19 0 i) eooooocoo ooocooooocs] DaIty METEOROLOGICAL THERMOMETERS. Baro- METER Corrected. || Dry. | Wet. | Diff. in. ° ° ° 30-022 || 46-9 | 44-0 2-9 033 || 46-7 44-0 2-7 051 46-7 44-4 2-3 032 || 46-0 43-8 2-2 038 || 46-0 43-9 2-1 051 45-7 44.3 1-4 051 46-0 44.7 1:3 070 || 47-2 | 46-3 | 0-9 30-022 || 48-4 47-0 1-4 30-012 || 45-9 44-3 1:6 30-015 || 48-3 45-9 2-4 29-997 || 48-9 46-0 2-9 29-948 || 49-0 | 46-1 2-9 29-935 || 48-7 45-6 3-1 29-898 || 49-2 46-0 3-2 29-845 || 48-9 46-6 2-3 29-838 || 51-0 47-2 3:8 29-744 || 52-7 | 49-0 3-7 739 || 53-0 49-4 3-6 793 || 49-7 49-0 0-7 846 || 48-7 46-2 2-5 854 || 47-1 44-6 2-5 869 || 45-8 43-1 2-7 889 || 44-9 43-1 1:8 922 || 44-3 40-9 3-4 953 || 42-2 40-0 2-2 30-001 39-3 36-4 2-9 013 || 39-6 37-0 2-6 052 || 38-0 36-3 1-7 067 || 42-0 38-5 3-5 088 || 42-6 | 39-0 3-6 101 39-5 37-5 2-0 107 || 37-9 36-7 1-2 103 || 40-3 | 38-7 1-6 079 || 42-9 | 41-4 1-5 30-166 || 44-7 | 44-0 0-7 171 45-3 44-6 0:7 194 || 44-9 44-3 0-6 196 || 47-3 45-8 1-5 194 || 47-3 45-4 1-9 191 45:3 43-6 1-7 192 || 42-9 41-7 1-2 200 || 43-6 42-5 1-1 205 || 42-9 41-8 1-1 30-161 42-8 41-5 1-3 150 || 42-7 | 41-1 1-6 146 || 42-7 41.2 1-5 146 || 44-7 41-8 2-9 119 || 44-3 41-7 2-6 113 || 44-0 41-7 2-3 111 43:8 41-9 1-9 Dec. 144 22h, 48-2 45-2 49-0 48-2? 53-2 32-8 47-2 41-6 RAIN GAUGE. 0-000 0-013 0-000 0-000 0-000 0-008 ANEMOMETER. Pressure. Direction of Max. | Pres. Wind. lbs. lbs. 3-6 1-5 SW. 3-5 ley SWi8 1-6 0-2 SWS 2-8 | 1-6 SWisS 2-1 | 0-6 | SSW3W. 1:38 | 0-2 SW by S 1-2 0-9 SWis 2-1 0-3 SW358 D3) dD SWisS 0-8 0-2 SW iW 1-1 0-5 SW.v 2.2 1-7 | SW by S. v. 4.7 2-1 SW. v. 4-1 1-0 Sw i 58. 2.2 2-2 SW. 5-7 4:8 SW. 6:1 4:8 SW. 7:5 4-0 WSW.v 5-5 5-2 W.v 3-4 1:8 W.v. 2:8 0-8 W. 2-1 1-1 W by N? 1-7 1-2 W. 1-4 0-4 W by N 1-6 | 0-3 W by N? 0-6 0-0 0:8 0-1 WSwW ? 0-3 0-3 WSW 0-3 0-1 0-7 0-4 WSW 4S 0-8 | 0-2 W by 8S? 0-3 0-1 WSW ? 0-2 0-0 0-1 0-0 0-2 0-0 3-1 Ww. 1-1 0-0 0-1 0-0 0-0 0-0 0-1 0-1 SW ? 0-1 0-0 0-3 0-1 SW 4S. 0-1 0-0 0-0 0-0 0-0 0-0 0-3 0-0 0-1 0-0. 0-0 0-0 0-0 0-0 0-2 0-1 SW by S. 0-3 0-1 SSW ? 0-2 0-0 Clouds moving from wsw. wesw. WSW 45S. SW by W: WNW. SW by W: WNW. WSw 3 W. WHS. Wis. WiN. W. W: W. Wi N. W by N. W by N: W. SW. SW. WSW $5. The minimum temperature is taken from the readings of the dry bulb thermometer. rs DPPNWONSH SODKRNON Sp COMPRPNONSH SHBRPNSNSH O OBSERVATIONS, DECEMBER 12—19. 1843. SPECIES OF CLOUDS, &c. Scud. Id., in loose masses. iid:, id. Id., rE woolly and mottled cirri, moving very slowly. Id. + cirrous clouds. Id. Id. Id.; very dark. Scud + thin cirrous clouds to §S. Patches of loose scud + linear cirri and cirrous haze; very thin cirro-strati on horizon. Thin low scud + thick cirrous haze, mottled cirri, and cirro-strati, covering the sky; the mottled cirri, radiating in sheets from SSE } E. Scud : cirrous clouds; nearly as before. As at 08; clouds quite blue to SE., sky to WNW. Scud + mottled, waved, and reticulated cirri; cirrous haze. Id. + thin cirrous clouds and cirrous haze. Id.; slight drops of rain. Id. Id. Id.; afew drops of rain. Thin scud : woolly woven cirri, radiating from E. and W.; light rain. Id. + cirri; light rain. Id. +— id.; drops of rain. Id.: mottled and interlaced cirri. Scud. Id., radiating from W. and E. Patches of scud. Scud + bands of light cirri lying E. and W. . Cirro-strati and linear cirri; masses of scud to S. Flambeaux of woolly cirri reaching from E. horizon to zenith, radiating from about ENE. ; linear cirri to S. lying ESE. to WNW. . Strips of mottled cirri + cirro-strati and cirrous haze on horizon. . Cirro-strati, sheets of reticulated, mottled, and curled cirri. . Thin woolly cirri and masses of cirro-cumuli +~ cirro-strati and cirrous haze on horizon ; masses of scud. . Cirro-strati. Dark. Id. Id E Seud. . Patches of loose scud : large, loose, woolly cirro-cumuli +— woolly cirri. . Thick cirro-cumulo-strati + masses of loose scud to S. . Scud + cirro-strati to E. Id. + id. Td. Id. Id. . Dark. . Thick scud. Id., moving slowly. Id. Id. . Scud. Id. MAG. AND MET. ons. 1843. 3c 193 Observer’s Initial. ~ euddeeodd weddoundd ouddgouedd wadddeud | WHeeerw seneeequn 194 DaAILy METEOROLOGICAL nee THERMOMETERS. ANEMOMETER. Gottingen Bae Mean Time 3 Rain Peessae - of iusto Max. ||GAUGE. ; Direction of : Corrected. || Dry. Wet. iff. - a ea - Observation. y and Min. Mb (PrRect Wind. Dec. S by W. — SW. WSw. SW:SW?2 SW: WSW? SW iW: Wsw. RO eee ae eee BaAMeEUIdShmdawS Wh SO SNS ONS BpmoheED SS WSwW. W by S. SW by W:W: WbyN, SW by W: W. SW: W. SW by W. .-» me 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (9) 0 0 0 0 0 0 0 0 0 o SW by W. oe SW : W by 8. 45-4 coo coococococeo Dec. 204 22h, The maximum and minimum are taken from the dry bulb thermometer. ; Dec. 214 202 and 22h, The meteorological observations are interpolated for the purposes of summation from the observations at 19? 214, and 234 (see Hxtra Observations), the observations at 20" and 22" being accidentally lost. PNESNS& Sor OBSERVATIONS, DECEWBER 19—25. 1843. SPECIES OF CLOUDS, &c. Scud. Id. . Thick clouds. Scud + cirro-strati to SE., with a patch of reddish sky. . Loose scud + dense homogeneous cirrous mass; cirro-strati on E. horizon Scud : cirrous mass. . Loose scud : cirro-cumuli and dense cirrous clouds. Id.: id. . Strata of clouds lying ENE. to WSW. . Scud to S. + cirro-strati on E. horizon. . Patches of scud +— cirro-strati and cirrous haze to SE. . Woolly and linear cirri. . Patches of mottled and woolly cirri; cirrous haze and cirro-strati on horizon. . Cirro-cumuli and woolly cirri to NW. cirrous haze on horizon. . Sheets of cirro-strati reaching from SSW. to E. . Clouds on HE. and S&S. horizon. . Streaks of clouds. . Scud + cirro-strati and cirrous haze to E. . Scud and cirrous clouds. . Scud. Id. Id. ; clouds just clearing off. Id. Id. Id. Id. Id. . Two currents of scud : woolly and linear cirri and loose cirro-cumuli. . Seud: cirro-cumuli. oe Scud ; two strata of cirro-cumuli + cirro-strati to SE., having the appearance of an oblique section of thin layers of sandstone, slightly contorted. Scud + sheets of cirro-strati, cirro-cumuli, and cirri, in different strata. About 45 20™ the cirro-strati to [E. were very red. . Principally cirro-strati. . Overcast. Id. Id. ; the slightest spit of rain. Id Id., in two currents. Id. Id. + woolly cirri, slightly tinged with red. id. : cirri. 195 Observer’s Initial. | Saereeshw ferns s we Shows setsun seguedsunw se WHe WES Sr Was 196 Datty METEOROLOGICAL Ree THERMOMETERS. ANEMOMETER. Gottin gen Bano: Quan Mean Time Rain : tity of RTS : Max. ||Gavee.|| Pressure. | pirection of || Clouds moving from of Observation. Corrected. Dry. | Wet. | Diff. |anaMin. M Wind. Clou : ax. | Pres. Gy ik ise in. 2. eC e . in. lbs. Ibs. 0—10 Dec. 26 0 O || 30-137 | 49-6 | 47-3 | 2-3 0-000 0-3 1 0-3 SWS. SW: W bDyS. 9. 2 0 115 | 49-6 | 47-2 | 2.4 0-9 | 0-4 | SWiw. SW. 10 4 0 101 || 48-3 | 46-1 2-2 0-4 | 0-2 SW. SW by W. 9. 6 0 104 || 45-6 | 44-3 | 1-3 0-6 | 0-3 SW 1 8 0 101 || 42-1 | 42-0 | 0-1 0-2 | 0-0 8. 10 0 101 || 44:8 | 44-3 | 0-5 0-1 | 0-0 g 18 0 30-072 || 45:0 | 43-9 1-1 0-3 | 0-3 SW by S 9. 20 0 079 | 44:3 | 43-6 | 07 | 5) 05 | 0-4 | SWS 22550 106 || 46-3 | 45.3 1-0 39.2 0-8 | 0-1 SW by S WN. 8. Dec. 27 0 O 127 || 48-0 | 46-1 1-9 0-000 0-5 | 0-1 SW 38. WiNn. $ 2 0 112 || 48-8 | 46-3 2-5 0-2 | O14 SWwss WwW 9: 4 0 113 || 45:0 | 43-9 1-1 0-2 | 0-1 SW. WSwiw 6 6 0 141 || 42-7 | 41-8 0-9 0-8 | 0-2 SWis j 8 0 159 || 40-7 | 40-1 0-6 0-3 | O-1 SW ? Ww 10 O 185 || 41-0 | 40-2 0-8 0-2 | 0-0 f | 18 0 30-182 || 42-3 | 42-2 0-1 0-3 | 0-1 SSW ? f 20 O 185 || 42-5 | 42-0 | 0-5 48.8 0-2 | 0-0 WSw. 22 0 205 || 44:7 | 44-6 | 0-1 38.5 0-0 | 0-0 SWiwW. Dec. 28 0 0 207 || 46:9 | 46-0 | 0-9 0-000 || 93 | 9-2 SWi58 SW by W 2 0 181 | 48-2 | 45-9 | 2.3 1-8 | 1:8 SW SW by W. 70]} 4 0 189 || 46-7 | 44.9 1-8 1-6 | 0:3 S by W wswis g 6 0 160 || 46:0 | 44-3 | 1-7 0-8 | 0-6 SSW wswis 10-0 |} 8 0 168 || 46-0 | 43-8 2-2 0-7 | 0-3 SWiS 1 ; 10°90 159 || 46-0 | 43.0 | 3-0 0-4 |03 | SWi8s wswiw 10:0 |} 18 0 | 30-103 | 45-7 | 42-9 | 2.8 1:3 | 0-2 SWwis 1 20 O 084 || 45-6 | 43-2 2.4 49-0 1-5 | 0:3 SWS WSW 1 22 0 095 || 46-1 | 43-8 | 2-3 44-5 0-9 | 0-3 SW. WsSwis 1 | Dec. 29 0 O 092 || 47-7 | 45-0 | 2-7 0.000 || 9° | o-4 SW. WSW 2 0 051 || 47-9 | 45-2 | 2-7 0-5 | 0-3 SWis SW by W: W 4 0 039 || 47-0 | 44-9 2-1 1:0 | 0-3 SW by S WbyS:W3N 6 0 029 || 46:9 | 44.9 2-0 1:7 | 0-2 | SSW4W 8 0 O11 || 46-1 | 45-0 1-1 0-3 | 0-1 SW by S WSW iw 10 0 003 || 47-7 | 45-7 2-0 oil i} aut SW by S 1 18 0 29-844 || 44-5 | 42-4 2-1 2:7 | 0-2 Sw. 20.0 839 || 45-9 | 43-5 2-4 47-5 1-7 | 0-7 SW by S. WSW: W. 22 0 818 || 46:0 | 43-6 2-4 43-5 3-4 | 2-1 SW 35. WSW: W. 1 Dec. 30 0 O 812 | 47-9 | 43-1 4-8 aoe 2-1 | 0-8 SW348. ||swpy W: WSW:SW dy W? : 2 0 758 || 45:8 | 42.7 3-1 3-7 | 3-0 SW 458. ||SW by W: WSW :SW by W? | 4 0 732 || 44:0 | 41-7 2-3 2-3 | 0-2 SW by S WSW : WSW? 6 0 696 || 43-4 | 41-3 3-1 1-7 | 0-6 | SSW3W WSW 8 0 644 | 44-9 | 42-7 | 2.2 2-5 | 1-1 | SWbyS WSW 10 0 618 || 45-2 | 42-9 | 2.3 2-1 ' 1-1 | SWbyS WSW 46-6 Dec. 31 0 O 41-6 0-148 || 4-2 47-7 23 0 ane sei fsa =: | ogy 0-238 OBSERVATIONS, DECEMBER 26-31. 1843. SPECIES OF CLOUDS, &. Cirrous scud : woolly cirri + cirro-strati. Scud. Id. [the Moon. . Masses of scud to N.; lines of cirro-cumuli to S. lying WSW. to ENE.; thin cirri causing a corona about Scud. Id. . Scud; a few minutes ago the quantity of clouds was 6. . Masses of scud near horizon; cirrous haze to E. . Scud. Id. Id. Id. ; Masses of scud. . Patches of scud. Id. . Streaks of clouds on N. and S. horizon. . Masses of scud + cirro-strati and cirrous haze on horizon. . Cirro-cumulous scud or large cirro-cumuli with loose edges + cirro-strati with haze to E.; uncommonly heavy dew, hanging in large drops on the palings, &c. . Loose cirro-cumulous scud + masses of loose cumuli to S. and E.; cirro-strati to E. 2. : + thin scud below. 4. Very loose scud + patches of cirro-strati to N. 6. Scud. 8. Id. a0: Id. #3. Id. #20. Id. 22. Id. } 0. Cirro-cumulous scud + thin scud to SE. } 2. Thin scud: watery woolly cirri. 4, Loose scud : cirrous scud + patches of cirro-strati to E. 6. Scud. DB. Id. nO. Id. 18. Masses of loose scud. 20. Dark scud to S.: masses of loose woolly cirrous scud. 22. Id. : id. -+— between the scud and cirri are cirro-strati in strata one above another, and with cirrous and cirro-cumulous edges. 0. Scud: loose and other cirro-strati: mottled and linear cirri. Be id. id.; id. 4. Id.: id. 6. Id. + linear cirri and cirro-strati; the Moon seen distinctly through the scud. [strati to N. 8. Masses of loose scud +~ bands of linear cirri and cirrous haze reaching across the sky, lying SW. to NE.; cirro- 10. Cirro-cumulous scud + sheets of cirri. MAG. AND MET. oss. 1848. , 3D 197 Observer’s Initial. Wismhwinw 24 wwddunnesd gdgdusw Se wre ererags woeesy TERM-DAY AND EXTRA METEOROLOGICAL OBSERVATIONS. MAKERSTOUN OBSERVATORY, 1843. 200 TreRM-DAY AND EXTRA METEOROLOGICAL ait THERMOMETERS, ANEMOMETER. Gottingen F Mean Time BAROMETER Phaccane ; ‘ of Corrected. i ‘4 Direction of Observation. Dry. Wet. Diff. Wind. Max. Pres. Os) ie kite in. 2 a 5 Ibs. Ibs. Jan 9 20 47 28.221 Vein, 1%) 20) 28-029 33-9 33-8 0-1 0-3 SE. 20 52 27-978 21 O 971 Bie 10) 909 34-3 33-3 1:0 3-5 3-0 SE by S. 23 O 885 23 35 870 dehy sie) OO © 864 35-6 34-7 0-9 3-2 0-5 SE. 0 35 849 By i) 837 37-6 35:3 2-3 0-0 0-0 4 0 850 35-6 34-7 0-9 0-0 0-0 Jan) 18) 10" 70 30-126 46-2 45-4 0-8 0-5 0-0 ll O 127 46-2 45-0 1-2, 0:3 0-3 WSw. 2 (0) 130 46-3 45-4 0-9 0-5 0-5 W. 13250 133 46-2 45-5 0-7 0-5 0-5 Ww. 14 0 139 46-1 45:3 0:8 0-5 0-7 W. 15 Q 150 46-8 45-7 1-1 0-8 0-5 SW by W 16 0 153 46-9 45-4 15 1-0 0-0 L710 132 46-0 45-2 0-8 1-2 2-0 SW by W 18 0O 139 46-2 45-2 1-0 1-8 1-0 WSw. 19 0O 147 46-0 44:8 1-2 1:5 0-5 SW by W 20 O 174 45-6 44.2 1-4 1-8 0-5 WSw. 2 0 179 45-5 44-0 1:5 0-3 0-0 Ph (G) 190 45-8 44:8 1-0 0:5 0:5 SW by W 773} (0) 203 46-1 45-2 0-9 0-5 0-0 dich, 1) ah @ 196 46-8 45-7 1-1 0-5 0-8 SW by W 10 182 47-0 45-9 1-1 1-0 0-5 SW by W 2 10 176 47-0 45-5 1-5 0-0 0-0 3.0 172 46-3 45-2 1-1 1-0 0-0 4.0 172 46-5 45-2 1:3 0-0 0-0 5 0 180 46-2 45-2 1-0 0-5 0-0 6 0 182 45-3 44-4 0-9 0:3 0:3 SW. yn) 182 45-0 44-0 1-0 0-5 0-3 SW by W. 8 0 184 44.7 43-7 1-0 0-3 0-0 9 0 172 44-0 43-0 1:0 0-5 0-5 SW by W. 10 O 176 43-5 42-5 1-0 1-0 1-0 SW by S. Heb 2410010 29-586 35-6 34-7 0-9 0-0 0-0 ll O 583 35-2 34-6 0-6 0:0 0-0 1p (0) 579 35-3 34-6 0-7 0-0 0-0 By (0) 580 34-8 34-3 0-5 0-0 0-0 14 0 586 34-8 34-2 06 0:0 0-0 Ss) 1) 582 34-9 34-4 0-5 0-0 0-0 16 0O 575 34-7 34:3 0-4 0-0 0:0 a0) 584 34-5 33-9 0.6 0-0 0-0 18 0 582 34-7 33:8 0-9 0-0 0-0 19 O 590 34:5 33-5 1-0 0-0 0-0 20 O 596 33-0 32-4 0:6 0-0 0-0 20) 586 34-6 33-9 0-7 0-0 0-0 22 0 590 35-5 34-0 1:5 0-0 0-0 23 0 586 36-5 34-2 2-3 0-0 0-0 Feb. 25 0 O 579 36-6 34:3 2-3 0-0 0-0 it @ 568 37-5 34:8 2-7 0-0 0-0 Zinn) 559 37-6 35-4 2-2 0:0 0:0 Q an Clouds moving from = Cloud SSE ? WSW ? OBSERVATIONS, JANUARY 9—FEBRUARY 25. 1843. SPECIES OF CLOUDS, &c. 201 Observer’s Initial. Pn mm. $20 47. #20 0. Snowing. #20 52. ty 0. 2 0. Sleet. 23 0. 23 35 0 0. Scud + thick cirrous clouds; very hazy to E.; sky in patches to SW. SCODNAMATRWNHOWNHMODON 2 — ee -— 7 - — CW WO — © © © o> O m CO OD S ococ co © © S'e oo co oo o'o eoeesecsescoocoo . Homogeneous, except a few cumuli to 8. . Light rain. . Very light rain. . Seud and cirri, Scud ; cirrous clouds. Id.; id. Scud, moving rapidly. Id. + cumulo-strati on horizon. Id. + woolly cirri. Id., moving rapidly. Id. Homogeneous scud ; light rain. Scud. Id. ; cumulo-strati on NE. horizon. Homogeneous scud ; clearer to NE ? . Scud, nearly homogeneous. . Homogeneous scud. Id. 2 30™. The wind blew a gust of 1 lb. from WSW. Id. Id. Td. Light rain. . Dark. Id. : Apparently haze over a portion of the sky, as the stars are but dimly seen. . As at last hour. . Scud, A lightish appearance to N.; Aurora ? Id. Id. Id.; a lightish appearance to NE.; Aurora ? Patches of scud; dark clouds to NW. Id id. Lightish streak on SE. horizon. Scud ; a light streak on NE. horizon. . Cirrous clouds to E.; clear on E. horizon. . Cirrous scud: woolly cirri + patches of cirro-cumuli; heavy clouds to E. Id. Id. ; Clearing to S. . Cirrous scud +— patches of loose scud below. , Id. . Scud, thick to NE. MAG. AND MET. oss. 1848. = He Sam ends | oe don duu dddduusy | 44 = 202 TERM-DAY AND ExTRA METEOROLOGICAL See THERMOMETERS. ANEMOMETER, Gottingen he a Sea Pressure. Direction of Clouds moving from Observation. Dry. Wet. Diff. Wind. Max. Pres. d. h m in. io 2 & Tbs. Ibs. Reb, 25 3° 0 29-554 37-3 34-6 2.7 0:3 ENE? 4 0 547 35:3 34-5 0-8 0-3 0-0 E. 5 0 548 36-0 34-8 1-2 0:0 0-0 E 6 0 547 35:3 34-1 1 0-0 0-0 E 7 563 34-8 33-8 1:0 0:0 0-0 8 0 571 34-4 33-4 1-0 0-0 0-0 9 0 566 34-6 33-6 1-0 0-0 0-0 10 O 551 33-3 32-8 0-5 0-0 0-0 Mar. 614 O 29-975 38-0 37-6 0-4 16 0 974 37-2 36-9 0-3 Mar. 12 13 0 29-250 41-2 38-2 3-0 2-5 1-5 W. W by N. 14 0O 252, 41-1 38-1 3-0 2-5 1-5 Wis W by N. Mar. 20 18 0 29-212 41-8 41-4 0-4 0-5 0-0 SSE? 19 O 206 42-9 42-0 0-9 0:3 0:0 E. SSE, 20 O 200 43-8 43-0 0-8 0-0 0-0 SSE. 21 O 192 45-2 44-6 0-6 0:3 0-0 ESE. SSE. 22) 0 197 49-8 49-1 0:7 0:5 0-3 SE by 8. SSE. pe) (0) 187 50-6 48-1 2-5 1-8 1-0 s. SSE: SSE ? Mar. 21 0 0 189 52-4 49-7 2.7 1-5 1:0 S by E. 8. 1 O 187 53-8 50:3 3:5 1-2 0-5 SSE. SSE:S. 2 0 184 54-1 49-2 4-9 1-8 0-8 SSE. S oO 182 55:6 50-2 5-4 1-5 0:8 S by E. Ss 4 0 182 54-2 50-0 4.2 0-5 0:3 SE by S. 8 3) (0) 179 54-9 50-7 4.2 0-8 0-5 SE. 6 0 218 49-3 46:3 3-0 1:0 0:3 SW by S? Varying. 7 216 48-0 46-0 2-0 0-0 0-0 SE by S. 8 0 228 45:5 44-5 1:0 0-5 0-0 SSW. 9 0 212 44-2 43:3 0-9 0-4 0-0 10 O 200 43-0 42-7 0:3 0-3 0-0 11 O 198 44-8 44.2 0:6 0-0 0:0 12 0 187 45:3 44-1 1-2 0:3 0-0 13 0 187 46-0 45-0 1-0 0:3 0-3 SE. 14 0 181 47-7 459 1:8 0-5 0:3 E by N. 15 0O 156 46-0 44-6 1-4 0-3 0-0 16 0 148 44-7 43-6 1-1 0-3 0-0 17 0 132 45:3 44-1 1-2 0-3 0:0 18 0 127 47-7 45-7 2:0 0-0 | 0-0 Sby W? 19 0O 113 47-3 45:5 1-8 0:3 0-0 SSE 20 O 122 47-5 46-0 1-5 0-3 0-3 S by E. SSE. 22 0 136 48:0 47-0 1-0 0-8 0:3 S by E. 23 O 117 49.0 47-8 1-2 0-5 0:0 s. Mar. 22 0 0 117 53-7 50-6 3-1 1-3 1-3 S by B. SSE. 2 0 127 58-0 52-4 5:6 2:5 1:5 S by W. S by W. 3h 10 134 58-8 51-0 7:8 2-0 2-7 S by W. 4 0 134 59-2 51-8 7-4 1-3 0-8 S by W. SSW. 5 0 166 56-7 50-2 6-5 1-2 0-5 S by W. S by W. 6 0 175 54-0 48-8 5-2 0:3 0:3 S by W. ’ SSW. 7 0 207 50-0 47-0 3-0 0:3 0-0 8. 8 0 219 47-7 45-6 2-1 0-0 0-0 8 9 0 PPA 49-6 47-0 2-6 0-0 0-0 10 O 239 46-2 44.7 1:5 0-0 0-0 IHD A OF —— olpwl| an | owe geen SE SAPONMWHMOOCON ANRWNHOWNHOO CO CO = OW WN © eososssessses|s9|°9|s999°°993 0. 0. 0. 0. 0. 0. 0 0. 0. 0. 0. 0 0. 0. 0. 0. 0. 0. 0. 0 0. 0. 0. 0. 0. 0. OBSERVATIONS, FEBRUARY 25—Marcu 22. 1843. SPECIES OF CLOUDS, &c. Scud; rain to ENE 2 Cirrous scud ; hail a short time ago. Scud + cirrous scud. Loose scud + cirrous clouds. Id. _ id. Very dark. Id. Id. 203 Observer’s Tnitial. Cumulous scud to NW. Light seen through the clouds to NNW., and when the clouds clear away a bank of light is seen along that portion (of the horizon. Seud. Faint auroral light, stronger four hours ago. Id. Scud ; light rain. Loose thin scud. Scud. Id. + loose-edged cumulo-strati and loose cumuli to HE. and SE. Id. + woolly cirro-cumuli and fine linear cirri lying N. and §.; cumulo-strati and loose cumuli near . Large detached masses of scud : cirro-cumuli. [the horizon. Scud and loose cumuli +~ woolly cirri and cirro-cumuli. . Thin scud: cirrous clouds. Detached masses of cumuli + cirro-cumuli. . Loose cumuli + woolly cirri. . Scud and masses of woolly cirro-cumuli. . Scud; very dark to SSW.; thunder ? A large mars of electric clouds moved up from SSW. ; at first the W. was covered, but the tendency of the whole is towards the E.; the clouds at ek paneer ed te be acted on by several currents, now they appear to move from SSE. ; large drops of rain; sky to E. with beautiful ecumulo-strati to 6 . Thick scud, falling in showers, the drops very large ; hazy to E.; very black to S. and W. Heavy showers, scud. . Clear, except a few clouds to N. Clear. Id., except a small patch of scud to E. . Patches of loose scud. . Thin seud. . Scud in different strata, moving very slowly +- cumulo-strati and cirro-strati to H.; the latter very red. Thick scud, a few drops of rain ; cirrous clouds or haze above ? Seud ; light rain. Raining. Thick scud; clearing up from SSW.; rain. Patches of cirrous scud + a mass of clouds covers the sky from NW., by E., to SE. to an altitude of 40°, curled cirri at the edges, apparently becoming haze to NE.; cumulo-strati near horizon; cumulito SW. . Detached masses of loose cumuli + the sky almost completely covered with thin crossed woolly cirri ; As at 2, [cirrous haze on E. horizon. . Masses of loose cumuli and cumulo-strati +—- woolly cirrous clouds. Masses of cirrous-edged cumuli + ranges of cumuli on E. and §. horizon; thin mixed woolly cirri. Large masses of cumulo-strati + cirrous clouds. Masses of scud ; the sky quite milky with cirrous haze. Thick masses of scud. Scud. Id. gegueuddd dduendddddddddues wwdddddg wow | we | ow | coos see sa 204 TerM-Day AND ExTRA METEOROLOGICAL sah THERMOMETERS. ANEMOMETER. Gottingen Mean Time BAROMETER of Corrected. ‘ ae Direction of Clouds moving from Observation. Dry Wet Diff. Wind. Max. Pres. é id. hs) ) jon: in. ° a Gl Ibs. lbs. Mar. 22 11 O 29-234 47-0 44-8 2.2 0-0 0-0 12 0 227 47-9 45-4 2-5 0-0 0-0 370 222 47-6 46-2 1-4 0-0 0-0 14 O 216 48-3 46-6 1-7 0-0 0-0 ls @) 192 48-2 46-5 1-7 0-5 0-3 SE. Sby E 16 0O Wan 47-9 46-4 1:5 0-3 0-0 NNE. zee 0) 161 47-1 45-8 1-3 0:3 1-3 SE. SSE? 18 0 143 48:8 46-8 2:0 2-0 0-3 ESE. 19 O 140 50-0 47-0 3-0 1-5 0-8 E by 8. SSE. 20 O 170 48-9 47-0 1-9 0:3 0-7 SE. Pillows (0) 160 47-5 45-9 1-6 0-0 0:0 220) 158 45-8 42-2 3:6 0-3 0-0 NNE. SSE ? es ee 0) 183 47-2 47-0 0-2 0-0 0:0 Mar, 23° 0 0 183 48-2 48-0 0-2 0:0 0:0 SSE. 1X0) 195 51-7 50-2 1-5 0-0 0-0 S by E, 2 «0 204 55-4 52-0 3-4 0:5 0-7 S. 3 0 221 54-8 51-3 3-5 1:0 0-5 SE by 8S. Sby E 4 0 236 53:7 51-0 2.7 1-3 0-7 SSE. S by E. Hy 269 52-7 49-3 3-4 1-3 0:3 SW. SW. 6 0 311 51-2 48-7 2-5 0-5 0-0 ano) 361 48-2 46-1 2-1 0-3 0:3 SW. SW. is (0) 374 44.7 43-2 1:5 0-3 0-0 9 0 406 41-0 40-8 0-2 0-0 0-0 10 O 421 41-2 40-8 0-4 0-0 0:0 } Mar. 29 12 0 29-761 32-0 31-8 0-2 0-0 0-0 Apr. onl 2a xO 29-590 37-9 36-7 1-2 0-0 0-0 14 0 576 36-0 34-8 1-2 0-0 0-0 16 0O 531 35:7 35-0 0-7 0:0 0-0 Apr. 612 0 29-177 44:6 43-2 1-4 0-0 0-0 14 0O 175 41-8 40-6 1-2 0-0 0-0 16 0O 167 39-8 39-0 0-8 0-5 0-0 Apr. 19 10 O 29-623 49-0 46-7 2-3 0-0 0-0 kh @) 629 47-8 46-1 1-7 0-0 00 12 0O 627 45-2 44-3 0-9 0-0 00 3 a0 609 44-6 43-9 0-7 0-0 0-0 14 0O 595 43-5 43-3 0-2 0-0 0:0 15.40 582 42.2 41-9 0-3 0-0 0-0 16 O 576 38-8 38-2 0-6 0-0 0-0 i710) 567 39-0 39-0 0-0 0-0 00 18 0O 557 36:3 36-0 0:3 0-0 0:0 SW. 19 O 549 40-6 40:3 0-3 0-0 0-0 20 0O 547 44.0 42.2 1:8 0-0 0-0 S$? Pal 0) 547 50-2 45-3 4-9 0-0 0-0 2280 530 53:3 47-0 6:3 0:5 0:5 ENE. 2a) 50 516 53:8 47-0 6-8 0-7 0-5 E by N. SSE. Apr. 20 70 40 509 55-8 49.0 6:8 0:7 | 0-3 SE by 8. 2 0 484 55-0 50:0 5-0 0:3 0-3 E by S$. SE by S. 3 (0) 463 54-2 49.0 5-2 0-5 0-1 NE. 8. 4 0 467 52:8 48-1 4.7 0:5 0-1 NE. SW. 5 0 466 51-8 48-0 3-8 0:5 0-1 NE. 6 O 468 51-3 47-5 3-8 0:3 0:0 SSW OBSERVATIONS, MArcu 22—Aprit 20. 1843. 205 es dark. . Linear cirri to SSE. . Seud ? . A sheet of loose cirro-cumuli; thick fog. Loose cirro-cumuli and woolly cirri; thick fog. Loose scud ; foggy. Cirrous clouds, woolly cirri, &e. fe id, The sky covered with cirrous clouds and haze; cumulo-strati. Nearly as before ; large cirro-cumuli + cumulo-strati near horizon. Scud + cirrous clouds ; cumulo-strati to §.; drops of rain. Id, + cirro-cumuli; the horizon dark with clouds to W. Id. + a thick mass of cirrous clouds ; ranges of cumulo-strati to SE. and S. Id. + cirrous clouds to NE. Id. + cirro-strati to E.; cirri to NE. Id.; dark clouds to W. Id. + large cirro-cumuli. HODODHAMBRWNHO!] aRW | OD SOND eHO SPECIES OF CLOUDS, &c. . fe | cu \eh. om. ‘11 0. Seud. Ww m2 0. Id. H jis 0. Ta. H m4 0. Id. Ww mis 0. Id. B 16 0. A few drops of rain. The wind since last hour has moved round by E. to N. B ‘117 0. Scud; a few drops of rain; wind beginning to blow. B mis 0. Id. H 19 0. Id., some of it very low + cirrous clouds. B Po 0. Id. it 21 +O. Id.; drops of rain. H 22 0. Id.; smart shower. B 23 «0. Rain. WwW 10 O. Scud + cumulo-strati to S.; breaking to S. WwW ¥1 O. Id. + large cirro-cumuli and cirrous haze; cumulo-strati and cumuli on horizon; clearing to S. WwW 2 0. Scud. D 3 0. Cirrous sceud. WwW 4 0. Seud; light rain. Ww a ©, Id. ig 46 0. Heavy clouds on E. horizon. H 7 O. Seud. D 8 0. Small patches of scud ; cirrous haze on horizon. WwW » 0. Ww 10 0. Scud. | W {1.2 0. Aurora before this time. (See Extra Magnetical Observations.) 0. Aurora. (See Extra Magnetical Observations.) Ww 0. Id.; patches of clouds to NNW. B 0. The sky became quickly covered with scud at 15" 30™. B 0: Scud. WwW 0. Aurora WwW ®: ¥) Id. 0. Scud. WwW 0. Id. B 0. Id. D 0. Clouds and haze on horizon. H 0. H 0 B 0 D 0 D 0. B 0. D 0. B 0. H 0. Ww 0. Ww 0. WwW 0. H 0. WwW 0. H 0. IEE 0. H 0. WwW |) MAG. AND MET. oBs. 1843. f 3F 206 TrerM-DAY AND ExtTRA METEOROLOGICAL A THERMOMETERS. ANEMOMETER. Gottingen Quan. Mean Time BAROMETER s tity of Corrected. Clouds moving from of Observation. Pressure. 5 ; Direction of ce Apr. 20 a 8 @) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0) 0 0 0 0 0 0 FO SRO TS C9 HO OS 109) bo ROMS ES Fh RON NOL SENT OF ONNOOKF DERN DDODOOCWWRH HN o June 7 Nw. Nw. WSW: W. Wie Ww. W by S. W. WNW. W. W by N. W by N. W by N. June 20 ) SSS CTI Sy eI OOnNrF DArFWAOCONNTNMA Uw oo oooocooocoococococoececqcococe — rd ad - H = SO 0 COI OTNRWNHOWNHOOCODNAMRWHHO |] & CO CO we) a O8 eossosssssssssssssssss| ©S| sessssssssssssosesssssseses|s|/ soe en ee I ae OBSERVATIONS, APRIL 20—JUNE 21. 1843. SPECIES OF CLOUDS, &e. i Seud. Cirro-cumulous scud. . Seud. Id. Id. Id. Id. Id. Id. Id. Id. Id. Td. Id. Id. Id. Td. Id. Id. ; Id. Id. ; luminous opening to NE. by N. portion of horizon. cirro-strati all round ; slight drizzle. id. ; id. cirro-strati on 8. and E. horizon. id. to NE. id. we we we we ve ; a few drops of rain. id. Sera. + cirrous clouds and haze to E. As before; slight shower. Seud . Light rain. Id. Rain. . Cirro-cumulo-strati and large cirro-cumuli, moving slowly +- mottled cirri. and mottled cirri +— cirrous haze near horizon. Id. id., Seud to S.: cirro-cumulo-strati. Scud, moving rather quickly + dense cirrous clouds. Mottled, ragged, and other kinds of scud +~ dense cirro-cumuli and cirrous haze ; electric-looking. Scud + dense cirrous clouds. Id. Large masses of cirrous scud +- cumulo-strati on horizon; curled cirri to S. lying 8. and N., the curl +— cirro-strati and linear cirri. Scud and loose cumuli + cirri to S. Cumuli and cumulo-strati on N. and S. horizon; fine cirri forming. +— cumulo-strati on E. and S. horizon. Id. Id. Id. Cirro-strati on horizon. . Cumulo-strati and cirrous haze on E. and N. horizon. Cirro-strati on horizon to E. and N.; red to N. . Cirro-cumulous scud, stationary ; cirro-strati on horizon. Id. Tide: cirro-strati near horizon. Id., moving very slowly + cirro-strati on E. and N. horizon; very thick to E. 207 Observer’s Initial. vaddduenddddd oo dq] 4 mmddeewe mans segudgewvuon|o| duge TerRM-DAy AND Extra METEOROLOGICAL THERMOMETERS, Dry Wet Diff. 46-7 45-0 1-7 47-7 46-0 1-7 48-7 47-0 1-7 51:3 48-1 3-2 55-4 51-2 4-2 57-0 51-0 6:0 58-4 51-7 6-7 59-4 52-2 7-2 61-6 53-9 77 61-0 52-1 8-9 61-3 53-0 8:3 62-7 54-0 8-7 64-6 54-0 10-6 63-7 54-7 9-0 65-6 56-6 9-0 64:0 54:8 9-2 62:8 54-6 8-2 60-8 54-2 6-6 56-2 51-8 4-4 52:3 49-1 3-2 62-9 60-3 2-6 66-0 62-0 4:0 62-7 60-4 2-3 61-1 61-0 0-1 58-5 57-8 0-7 57:0 56-9 0-1 56:8 55:5 1-3 58-9 55-6 3-3 61-6 57-1 4:5 63-0 58-0 5:0 64:8 59-0 5:8 61-8 55-3 6:5 | 208 Gottingen Mean Time BAROMETER of Corrected. Observation. id.) Debye ne in. June 2115 0 29-771 16 O 770 7) 785 18 0 792 19 O 811 20 O 813 210) 819 22 0 818 23 O 816 June 22 0 0 822 1 0 825 2 819 0 816 4 0 815 5 (0) 807 6 0 $04 7 O 799 8 0 $15 9 0 830 10 O 837 July 5 0 0 29-510 1 O 493 20 477 3 (0) 448 40 431 5 1 (0) 415 6 0 389 20 337 Ss 0 303 10 O 322 18 0O 272 20 0 284 21 O 297 22 0 287 73} (0) 305 July 6y 00 306 1 0 308 2 0 337 3.0 369 4 0 406 July 5 3 40] 29-670 4 0 667 4 35 661 5 0 655 5 30 642 5 45 662 6 0 661 8 5 541 8 30 531 9 0 546 July 5—6. The above observations were made at the end of the pier at Berwick for the purpose of determining the height of # barometer at Makerstoun above the level of the sea, but were rendered valueless for that purpose by the occurrence of a thunder-stor ANEMOMETER. Pressure. Direction of Max. | Pres. ned. lbs. Ibs. 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-1 0-0 0-2 0-0 SW by S$. 0-2 0-3 ENE. 0-1 0-0 0:0 0-0 0-0 0:0 0-0 0-0 0:3 0:3 NNE. 0:3 0-2 NE by N. OBSERVATIONS MADE AT BERWICK-UPON-T WEED. 58:8 58:8 56-6 56-7 Height of the cistern of the barometer at the Berwick pier above the mean level of the sea = 32 feet. Clouds moving from SSASAYHARABRABOHYOOHHHNT a — - >" ae = OBSERVATIONS, JUNE 21—JuLy 6. 1843. SPECIES OF CLOUDS, &c. DH OCODOOWIAMPRWNHNKHO | COMDIAL WNrOW =a Vy ooessecsssssssssssss esos egsessoosssssoso—oso: . . Cirro-cumulous scud + cumulo-strati on E. and N. horizon. . Cirrous scud +~ cirri; cirro-strati near E. horizon; clouds tinged with red to NE. . Scud and loose cumuli + cumulo-strati to 8.; cirri to N. . Cirro-cumulous scud +~ cirro-cumuli and woolly cirri; cumulo-strati on E. and S. horizon. Scud + cirro-cumuli, cirro-strati. . Cirro-strati diverging from NW.; dark cumuli to N.; cirro-cumuli to E. and S. Scud + cirro-cumuli. ; Cirro-cumulous-cirrous-edged cumuli ; fine linear cirri. As before. Scud and cumuli + cirrous haze on E. horizon. Id. Cirrous-edged cumuli + masses of woolly cirri; the temperature has been as high as 65° since Jast hour. Id. Id., in detached masses +— masses of cirro-cumuli to E. . Patches of cumuli on horizon. . Patches of scud +— cumuli on horizon. Cirrous scud. Cirri and cumuli. Red and gray cirro-cumuli to N.; hazy to E. Scud; dense cirro-stratus ; a few drops of rain. Id. ; id. ; hazy. | Tdi; id. Scud, cirrous clouds ; heavy thunder-showers. Thunder-storm. (See Daily Observations.) Seud ; cirrous clouds and haze. Id.; id. . Scud and loose cumuli. Id.; patches of cirri. Id. 40. 0 4 35. w LO WW Od wt WO 0. Thunder and rain. | td bn a | 209 Observer’s Tnitial. | 4eeegeeegedeeedeegae | vovemdddumdunmmm dss | | MAG. AND NET. ogs. 1643. 3G 210 TeRM-DAY AND ExTRA METEOROLOGICAL keys THERMOMETERS. ANEMOMETER, Gottingen ; Mean Tim BAROMETER Z of € es Aa i Pressure. Direction of Clouds moving from Observation. Dry. Wet. Diff. Wind. d. h. m. in. a = MS July 5 22 0]| 29.532 60-0 22 30 51h 7/ 60-6 23 «+O 527 60-9 23 30 529 61-1 July 6 0 0 531 61-3 0 30 524 61-6 1 0O 525 61-7 1 30 526 63-3 2 0 526 62-7 July 19 10 0 29-490 51-0 49.7 1:3 WwW. 11 O 498 51-4 50-0 1-4 1 @) 497 50-0 49-0 1-0 13 0 486 48-7 48-0 0-7 14 0 479 49:8 48-7 1-1 15 O 458 48-7 47-8 0-9 16 0 450 46-7 45-9 0-8 w. 17 O 444 46-0 45-2 0:8 W by S. 18 0 442 47-5 45-5 2:0 NW ? 19 O 427 50-0 47-2 2-8 SW by W. 20 O 409 51:3 48-5 2-8 Sw. NW ? ) 21 O 389 54-0 50-8 3-2 SW, W by S. 2270 373 53-6 50-6 3-0 SW. WSW. ) 23 0 356 51-6 49.9 1-7 SW. ) July 20 0 0 326 51-2 50-1 1-1 SW by S ( Lo a7 | Boe | Si-8 1-0 SW. ’ 20 260 53:8 52-2 1-6 Sw. Ww | 3 0 239 55-0 52-6 2.4 WSW ; 4 0 228 55-9 53-0 2-9 SW. W by S. 5 (0) 215 55-9 53-1 2-8 SW. W. 6 0 205 56:4 53-0 3-4 Ww. «10 212 55-7 52-1 3-6 W. 8 0 214 55-1 52:0 3-1 WSW. WNW. 9 0 250i 54-8 51-4 3-4 SW by S. WNW : NW 10 0 232 52-7 50:8 1-9 W by S. NW Aug. 25 10 O 29-545 56-6 54-9 1-7 SW by S 11 O 571 55-6 54-1 1-5 SW by 8 . 12 0 578 52:8 52-2 0-6 13 0 580 50-7 50-4 0-3 14 O 592 49-0 48-7 0:3 15 0 592 48-8 48-0 0:8 16 0 599 47-5 47-5 0-0 17 0 603 49-0 48-7 0-3 18 0 608 50-2 49-8 0-4 SSW 2: SSW. 19 O 621 48-6 48-6 0-0 20 0 622 53-2 51-8 1-4 21 0O 619 57-0 55-0 2-0 SW. 22 O 616 61-2 57-9 3-3 SSW. SW 23 0 615 62-9 57-6 5:3 SW by S SW. Aug. 26 0 0 614 64-0 58-0 6-0 SW. SW ) 1 610 64-3 58-2 6-1 SW by 8 SW by 8 1 2 0 604 65.2 59-0 6-2 SW. SW. : 3770 601 59-0 57-2 1-8 Sw. | 4 0 616 53-4 53-3 0-1 SW. SW. ) 5 60 608 54:9 54-5 0-4 Sw. 6 0 625 53-7 53-4 0:3 WSW. SW ) Th 643 53-9 52-9 1-0 SW. WSW. a > ' - STS REE 7 LT I OE SE | w WCONAMPRWNHHO|WHHOOWNAN NF owNtr x WIOTMRWNOHOWNHOODMNAMRWNHS] COOUIABDAA WH OBSERVATIONS, JuLY 5—AvuaGustT 26. 1843. 211 ’ SPECIES oF CLOUDS, &. > e 2a fo) m. 0. 30. 0. 30. 0. 30. 0. 30. 0. 0. Seud. 0. Id. 0. A streak of light to NNE. 0. Id. 0. Send. 0. Id.; very red to E. 0. Cirro-cumulous scud ; sky red to E. 0. + linear cirri; scud on Cheviot. 0. Scud + cirro-strati on E. horizon. 0. Id. + id. 0. Id. 0. Id. + cirrous clouds. Id.; light rain. Rain. Id. Id. Scud ; light rain. Id.; id. Td. coossssossesssssssssssss|Sssssesssssss Ed: passing: showers. Id. ; the sun’s dise just visible through thick cirrous haze. Id. Id. + cirrous clouds. Loose scud : cirro-cumuli and cirrous scud. Scud + cirro-cumuli and cirrous clouds; dark mass of scud to E. Scud. Cirrous clouds and cirro-strati. Loose cumuli ? ; cirro-strati. Cirro-strati. Id. lid:s a small patch of cumulus to S. Cirrous haze, linear cirri, and cirro-strati. Fine linear cirri and cirrous haze, becoming thick to E. Cirrous scud to W.: feathered and woolly cirri to 8. +— thick mass of linear cirri and cirrous haze to E. Nearly as before. Cirri and haze. . Masses of scud + cirro-strati to W.; cirrous haze on E, horizon. Scud and loose cumuli. Id. +— cirrous clouds to W. Id. +— id. . Scud + cirro-cumuli and cirro-strati. . Scud and cumuli; dark scud to SW. . Dark electric scud ; thunder ; a shower lately and a heavy one immediately. . Scud + thick cirrous haze. . Thick, nearly homogeneous cirrous mass +— patches of scud near horizon. . Scud + cumuli on S. horizon; heavy shower. . Cirrous scud + cirro-strati and scud to E. 444eghmdddsuouwwuowews| dgoumndeded ed emo Mes MeMecMe-MecMesMecls | TEeRM-Day AND ExTRA METEOROLOGICAL 212 F THERMOMETERS. Gottingen Mean Time BAROMETER of Corrected. Observation. Dry. Wet d. h m. in. io ¢ Aug. 26 8 O 29-651 50-9 50-3 9 0 678 49-8 49-3 10 O 697 51-0 50-3 Sept. 18 12 0 29-988 47-7 46-8 Sept. 20 10 O 29-790 59-3 57-8 11:0 783 59-7 58-2 12 0 770 58-9 57-9 13 O 769 59-6 58-3 14 0O 769. 59-0 57-6 15 0 779 58-0 56-7 16 O 776 59-2 56-4 17 0 775 58:8 56-4 18 0 797 59-7 56:6 19 O 813 59-7 56-7 20 O 833 60-7 57-4 21 O 862 62-2 58-7 22 0O 874 63:5 59-0 2B (0) 893 63-0 58-0 Sept. 2k <0: 0 908 64-3 58-0 “20 923 63-6 57-2 250 935 63-4 56-5 3 0 944 64-2 57-0 4 0 958 64-9 57-6 5 0 971 62-9 57-5 6 0 29-990 60-9 55:8 7 0 30-008 56-3 53-6 8 0 042 51-1 50-1 9 0 073 48-0 47-7 10 O 082 47-2 46-1 11 0O 099 49-1 47-9 12; 0 109 47-0 46-2 13 0 118 45:3 44-8 14 0 145 44-6 44-3 tom) 148 43-2 43-0 16 0 162 43-2 42-7 i” 0 167 ~ 42-4 42-3 18 0 190 41-9 41-8 19 O 210 40-8 40-8 19 30 225 42-6 42-0 20 O 231 45-7 45-0 Pil (0) 248 49.2 48-1 22 0O 264 52-4 51-0 23580 267 56-6 54-4 Sept. 22 0 0 266 59-4 56-0 1 O 261 63-0 58-7 2 30 250 66-2 59-3 3) 0) 244 68-8 61-7 4 0 244 69-7 60-3 5 0 246 69-2 61-7 6 0 264 64-1 60:3 7 273 60-0 58-3 8 0 279 55:3 55-0 2 9 ¢ 288 53:3 52.1 10 O 301 51-0 49.7 Oct. 18 10 0 30-014 30-3 29-6 DNS ee oe ed reer t, a ANEMOMETER. fceilcuint Direction of Max. Pres. = lbs. lbs. 0-4 0-0 0-0 0-0 0-2 0-2 = Sw. 0-1 0-0 1-2 0-3 0-8 0:5 0-5 0-3 1-0 0-3 0-4 0-1 SW. 0-2 0.2 WSw. 0:3 0:3 SW. 0-6 0-1 SW. 0-6 0-1 0-8 0-5 WSwW. 0-9 0-3 SW. 0:5 0-0 0-3 0:3 W. 0-5 0-4 NW by N 1-0 0-7 NW. 0-6 0-5 WSW 0-9 0-5 W 0-4 0-2 0-3 0-1 0-4 0-3 NNW. 0-2 0-0 0-0 0:0 0-0 0-0 0-0 0:0 0:0 0-0 0-0 00 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 00 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-1 0-0 WNW ? 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-1 0-0 : 0-1 0-0 NE. 0-0 0-0 0-0 0-0 0-0 0:0 Clouds moving from WSwW ? Quan tit Clo u d WN OWNFODOONIAAPRWNKOODNTAAIRWNRrOWNr SO cy uy tu =f ©) Ul OBSERVATIONS, AUGUST 26—OcTOBER 18. 1843. SPECIES OF CLOUDS, &c. Scud and cirrous clouds near horizon. Id. S98 Seud. Faint Aurora. Cirro-strati to N. Seud + cirro-strati. . Cirro-strati. f Id. and send. 14h 35m. Bright Auroral light from NW. by N. to N., extending from the horizon to about 12° altitude; nostreamers Seud. The Aurora has disappeared. Masses of scud. Td. cirro-strati on E. horizon. Seud + cirro-strati on E. horizon. ide + id. Id. + cirrous clouds. Id. + feathered and woolly cirri. Id. + id. Id. + cirro-cumuli, Cirrous-edged and loose cumuli + curled, feathered, and mottled cirri. Masses of loose cumuli + woolly and curled cirri. Masses of scud + cirri and cirro-strati to E. Loose cumuli + cirro-strati to 8. Id. _ id. Loose patches of scud; cumuli on S. horizon ; haze on E. horizon. Cirro-strati on S. horizon; cirrous haze on H. horizon. Thick cirrous haze to E. Clear. Id. A streak of cirro-stratus to NE. ; light fog. Foggy ; cirro-strati to NE., moving down E. horizon. Sky covered with scud. Cirrous scud to N. and NE. . Strips of hazy cirro-stratus on E. horizon. Clear. A small patch of scud to NE. Clear. Id. Id. Cirro-strati to NW. A few patches of hazy cirro-stratus to NNW. Id. oo o| spsosspessSesessesSeessoossssesssssssssssssssssssssess|s lawn! Q Id. Clear. . Patches of cirro-strati to NNW. Clear. Id. Id. MAG. AND MET. oss. 1843. 3H or pulsations visible. bo ay os Observer’s Initial. 4| 444444444444 dunonu mmm nmnedevowdnonddddudddduyyy| [aaa | 14 TERM-DAY AND EXTRA METEOROLOGICAL Gétti THERMOMETERS. ANEMOMETER. ottingen Mean Time BAROMETER Pree Cloud ners of Corrected. § , Direction of § moving from Observation. Dry. Wet. Diff. Wind. Max. Pres. d h. m. in. 2 © g lbs lbs. 0—10 Oct. 18 11 0 || 30-029 30-0 28-3 1-7 0-0 | 0-0 0-0 12 0 041 PE aa Pe 0-0 | 0-0 0-0 13 0 061 D656", |i water 0-0 | 0-0 0-0 14 0 078 DGOr ent ects = 0-0 | 0-0 0-0 15 0 090 23-7 23-7 0-0 0-0 | 0-0 0-2 16 0 102 23-9 23-4 0-5 0-0 0-0 0-0 07 0 115 23-9 23-5 0-4 0-0 0-0 0-5 18 0 120 24-0 23-6 0-4 0-0 | 0-0 0-¢ 19 O 139 24-0 24-0 0-0 0-0 0-0 0-0 20 0 153 26-2 26-0 0-2 0-0 0-0 8-( 21 0 151 29-1 D7.D\ She. 49 0-0 0-0 7.0 22 0 152 33-0 31-0 2-0 0-0 | 0-0 Ww 7.0 23 0 154 35:3 32-2 3-1 0-0 | 0-0 WwW WwW 3- Oct. 19 0 0 161 40-4 35-9 4-5 0-1 0-1 WbyS WNW 2.0 H 0 147 42.9 38-7 4.2 0-4 | 0:3 WSW 0-3 2 0 124 44.4 39-3 5-1 0-3 0-2 W byS 0-9 2) 0 115 45-0 39-5 55 0-3 0-2 W byS 0-3 4 0 110 44.7 39-8 4.9 0-4 | 0.4 Wsw. 0-5 | 5 0 104 41-9 38-9 3-0 0-3 | 0-2 2 6 0 107 39-6 37-2 2.4 0-3. | 0-1 Sw 0-5 7 40 098 38-3 36-6 1-7, 0-1 0-0 4.( s 0 079 39.2 37-2 2-0 0-1 0-0 4. 9 0 069 36-7 35-3 1-4 0-1 0-0 2. 10 0 061 37-2 36-0 1-2 0-0 | 0.2 14 Oct. 27 22 O|| 28-522 45-9 45-2 0-7 2-7 2-0 E by N E by S. 23 0 464 46-1 45-6 0-5 2-2 1-5 NE. E by N. 23 30 427 Oct. 28 0 0 417 48-0 47-0 1-0 2-6 | 0-8 E ESE | 0 5 415 t( 0 30 422 ( 1 30 431 . 2 0 423 45-1 43-0 2-1 1-5 0-8 E ESE 3 30 425 4 0 424 43-7 41-8 1-9 1-3 0:3 NE. Eby N: E. Nov. 212 0]] 29-571 33-0 32-0 1-0 0-0 | 0-0 SSE Nov. 24 10 0|| 29-460 34.0 32-6 1-4 0-0 | 0-0 11 0 465 30-8 | esse ses 0:0 | 0-0 12 0 477 34-0 32-0 2-0 0-0 0-0 130 476 34.2 33-7 0-5 0-0 | 0-0 14 0 474 34.8 34-1 0-7 0-0 0-0 15 0 460 33-9 33-3 0-6 0:0 | 0-0 16 0 446 34-0 33-6 0-4 0-0 | 0-0 lz 0 430 CGH. AN secen ven 0-0 0-0 18 0 430 9955 | ‘waaees 0-0 0-0 19 0 435 30:0 ||, eames 0-0 0-0 7 20 0 429 DO:8) Vil eee 0-0 | 0-0 : 21 O 424. SOS) Weer ane 0-0 0-0 Ss} I 22 0 423 33-3 31-6 1-7 0-0 | 0-0 : 23 0 422 By 32-2 1-5 0:0. || 0-0 7 Nov. 25 0 0 390 34-3 33-6 0-7 0-0 0-0 Ww 7 1 0 368 35-3 34.4 0-9 0:0 | 0-0 8 2 0 383 36-7 35-6 1-1 0-0 | 0-0 3 0 385 35-7 35-0 0-7 0:0) {| 10-0 W:NW 7 4 0 387 35-3 34-7 0-6 0-0 0-0 W 5 0 364 SHCOM a eee Hod 0-0 0-0 i = — i o COrIDarP WWF: — ww SCOMNAIMMNRWNHNHOWNHOLO SO BFOl|N|/ PRWNHOCONWN SeosssssossssssssssssssssoH oo noSS90 wo ess oo oS ooossssssssss—ogossses|s OBSERVATIONS, OcTOBER 18—NoOVEMBER 25. 1843. SPECIES OF CLOUDS, &c. Id. Cirro-strati to E. Clear. Slight cirrous haze to E.; faint lunar halo. Cirro-strati to E. Id., tinged with red. Cirro-strati on horizon; cumuli. Cirro-cumuli ; haze on horizon. Woolly cirri, moving slowly + patches of mottled cirri. Diffuse and mottled cirri. Woolly, mottled, and linéar cirri and cirro-strati. Cirro-strati to S. Id. Cirrous haze; patches of scud to S. Cirro-strati and cirrous haze on NNE. horizon. Haze with patches of scud. Cirrous haze and cirro-strati. Cirrous clouds and haze. . Cirrous clouds on horizon. . Cirro-strati and cirrous haze. . Loose scud ; drizzle; Scotch mist. . Scud ; light drizzle. . Loose scud. . Scud and loose cumuli, breaking to E. . Loose scud: woolly cirri +~ diffuse cirri to W. . Patches of scud +~ cirro-strati to N. . Sky covered with thin clouds. Scud 2 Id. Clear on E. horizon. Cirrous clouds ? Scud ?; sky to E. and S. Clouds on horizon. Id. ; cirrous haze. Cirrous haze ; stars of the third magnitude are visible in the zenith. Woolly cirri and cirrous haze ; cirro-strati to 8S. and E, Thick woolly scud + cirro-strati to NE.; cirrous haze. Snowing. Thick cirrous mass; cirro-cumulous scud below to N. Large woolly cirro-cumuli, moving slowly. Cirrous scud and loose cumuli. . Massive, zigzag, thunderbolt cirro-strati, radiating from S.: woolly cirri. . Cirrous scud and woolly cirri. . Flame cirri to S.; cirrous haze. 215 Observer’s Initial. 44ndqdghiwwumewounmdd| |e gggaq d4]wquoduduadgunmmndsesusss | 216 TERM-DAY AND ExTRA METEOROLOGICAL Ae THERMOMETERS. ANEMOMETER. Gottingen c Mean Time BAROMETER ra of Corrected. Dr Wet. Diff, Ho Direction of Clouds moving from a Observation. ye rae Pees, Wind. Clov d d. lol, Feet in. C) e o lbs. lbs Nov. 25 6 0 29-364 3032) | Barca. 0-0 0-0 7 (H) 375 OREO T MS ATP aaabec 0-0 0-0 8 0 366 pois” Sl" aes 0-0 | 0-0 9 0 368 Bie7 20:7 0-0 0-0 | 0-0 10 0 339 BOA | gate: 0-0 | 0-0 Dec. 10 13 0 |] 29-942 46:8 44.7 2-1 0-5 | 0-2 ssw Sw. 14 0] 29.939 47-0 44-8 2.2 0-2 | 0-2 SSW Dec. 11 12 0 || 30-087 47.0 46-1 0-9 Ont | 0:0 Dec. 20 10 0|| 29-891 47-7 45-6 2-1 0-5 0-2 SW ti 0 893 48-3 46-3 2.0 69" |" 0:7 SW 12 0 896 49-3 46-8 2.5 15 | 0-2 SW? 1200 899 48.2 46-4 1-8 0-4 | 0-3 SSW 14 0 872 47.6 46-1 15 ee Pes SW? 15 0 870 48-3 46-9 1-4 10 "| 05 SSW. 16 0 892 48-4 47-9 0-5 0-8 | 0-6 SW 17) 40 927 46-4 45:8 0-6 ro Pot W. 18 0 940 45-5 44:5 1-0 0-0 | 0-0 19 0 971 39-9 39-7 0-2 0-0 | 0-0 20 0 || 29-994 39-0 39-0 0-0 0:0. | 0-0 W. 21 0 || 30-022 42.1 41-5 0-6 0-0 | 0-0 22 0 055 38.9 38-7 0-2 0-1 | 0-0 SW WNW? 23 0 073 43-0 41-5 15 6-1 | 04 Dec. 21 0 O 077 42.9 41-8 Led O41 | Ol SSW. WNW. 1 0 081 43-4 42.2 1-2 0-1 | 0-2 SW by S. 2 0 086 45-0 43-6 1-4 0-2 | 0-0 30 101 43.5 42-5 1-0 0-0 | 0-0 W by N. 4 0 103 40-8 40-6 0-2 0-0 | 0-0 5 0 113 37-4 37-2 0-2 0-0 | 0-0 6 0 109 37-1 37-0 0-1 0-0 | 0-0 7 0 117 38-7 38-5 0-2 0-0 | 0-0 | 8 0 105 39-6 39-3 0:3 0-0 | 0-0 a 9 0 083 39-1 38-7 0-4 0-0 | 0-0 | 10 0 066 38-6 38-0 0-6 0-0 | 0-0 | ia 061 39-0 38-8 0-2 0-0 | 0-0 | 12 0 046 39.4 39.2 0-2 0-0 | 0-0 Iya) 018 40-0 39-7 0-3 0-0 | 0-0 f 14 0]| 30.002 40-7 40-4 0-3 0-0 | 0-0 f 15 0] 99.979 41-3 40-9 0-4 0:0. "10:0 0 16 0 957 45-3 44.7 0-6 0-2 | 0-2 SSW. ! 17 0 940 46-1 45-3 0-8 0-9 | 1-0 S by W. Ww? ) 18 0 925 44.2 43-7 0-5 0-3 | 0-0 Wsw? 0 19 0 897 44-1 43-6 0-5 0-0 | 0-0 Wsw? i 21 0 845 46-6 44-7 1-9 Day! i (Os SSW. SW : SW. if 23 0 808 50-0 47-7 2-3 3e%. fins SW by S. ! Dec. 22 0 0 759 51-0 48-6 2-4 2.8 | 1-4 SSW. SSW. 1 0 718 50:0 | 49-3 1-5 Dail, et SSW. SW by S. : 2 0 691 53-0 51-0 2.0 4.5 | 3-4 SW by 8. SW by 8. ig 3 0 659 53-8 51-6 2.2 4.8 | 3-1 SSW. SW4S8:SWHW. h 4 0 636 53-7 518 1-9 6-0 | 4-8 SW by S. SWiw. ih! 5 0 647 54.2 | 50-9 3:3 54 | 5-4 SSW. SW : WSW. ph! 6 0 631 53-7 50-5 3-2 ene AG SSW. SW? Ht 70 665 52:9 | 49-1 3-8 5-9 | 3-7 | SWoys. SW. i}! 8 0 660 52-2 48-2 4.0 538) aaa SW by S. / 10 0 710 51.0 | 46-8 42 | 47 | 21 | SWohyS. ooo 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. me O; 0. 0. 0 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 7 0. 0 0. 0. UO. 0. m0. 0. ie O. * 0. 0. 0. 0. 0. ma 0. 3 0. 0. 0. | 0. 0. 0. 0. 0. 0. 0. 0. OBSERVATIONS, NOVEMBER 25—DECEMBER 22. 1843. SPECIES OF CLOUDS, &c. Foggy; cirrous clouds. Cirro-strati to S. and E. . Thick fog. Id. Id. Td. Slight rain. Id. Rain heavier. Light rain. . Strata of clouds lying ENE. to WSW. Cirro-strati on E. horizon. Scud to S. + ribbed cirri; cirro-strati on E. horizon. Patches of scud’on N. and S. horizon; woolly cirri; cirro-strati to S. Patches of scud +~ cirro-strati and cirrous haze to SE. Patches of cirrous clouds and haze. Woolly and linear cirri. Woolly and mottled cirro-strati on horizon. Patches of mottled and woolly cirri; cirrous haze and cirro-strati on horizon. Woolly cirri and thin woolly cirro-cumuli. Cirro-cumuli and woolly cirri to NW.; cirrous haze on horizon. Cirro-cumuli to W.; cirrous haze to E.; cirro-strati to N. Sheets of cirro-strati reaching from SSW. to E. . Scud. Clouds on E. and S. horizon. Streaks of clouds. Id. Loose scud. Id. Id. Id. Id. Id. Id. Scud + cirro-strati and cirrous haze to E. Id. +— id. Scud. Id. Id. In strong gusts of wind the vane indicates SW. by S. Id. Id.: masses of cirri. Id.; clouds just clearing off. Two currents of scud. Scud. Id. Id. Id. 217 Observer’s Initial. Thin gray smoky scud: beautifully mottled cirri and bunches of woolly cirri, coloured orange-yellow ~ linear cirri and cirfo-strati to E. 44 oy 4 guoueddededddenguedgddmemdeweeyeoveddss| | &| downy | . AND MET. oBs. 1848. 31 218 Gottingen Mean Time of Observations. Lr Po Pp Temperature of Water. Pump Wells. eceees eeeeee eereee Seeene eeeeoe eeeeee weeeee eeeeee ee eeee eeeeece eeeeee Cottage.| Garden. eeeeee eeeeee eeeeee eeeree eeeeee eeeeee eeaeee ereene River Tweed. * Tweed in flood. Gottingen Mean Time of Observations. Temperature of Water. 18 27 March 4 11 18 27 April May 6 June 3 bo bo So ON FPF PRP PDR PP PR KP KP PPP LP LP LP P BD July I 18 Aug. Pump Wells. + The thermometer used before this was broken. Cottage.| Garden. weeeee eteene River Tweed. eeceee Gottingen Mean Time of ExtTrA METEOROLOGICAL OBSERVATIONS, OcTOBER 1842—DEcEMBER 1843. Observations. Sept. 2 Cottage.| Garden. PrP PP Temperature of Water, Pump Wells. River Tweed. eteeee eeeeee | wee wee eeeeee | weewee weewee eeaees ABSTRACTS OF THE RESULTS MAGNETICAL OBSERVATIONS, GENERAL SIR T. M. BRISBANE, Barr., MAKERSTOUN. 1843. 220 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. In order to avoid repetition, it may be remarked generally,— First, That the results for the month of January are more imperfect than those for the succeeding months, as on the first week of 1843 only four daily observations were made, and on the second week only eight. Attempts have been made to render the means comparable and as complete as possible, by means of observations made at all the 24 hours in 1844: these will be found explained after the various Tables. Second, In obtaining the hourly means for the month of January the first week’s observations. were wholly rejected. Third, It is obvious that the daily means from the nine observations, whatever attempts at correction may have been made, are imperfect, and that the results deduced from these means cannot be expected to be so distinct as they would have been from twelve two-hourly observations. Fourth, As no observations were made on Sundays, the places which the means for Sundays would have occupied have been filled up by the means of the three preceding and three succeeding days; these means are therefore weekly means, and may be considered as approximate means for the Sundays. They have been used in the summations having reference to the moon’s position, as it was considered that the want of any means on these days would affect the accuracy of the results more seriously than the use of the pe ga rag oe Fifth, The time used in all the Tables is Gottingen mean time astronomical reckoning ; but in the Remarks on the Tables, Makerstoun mean time civil reckoning is used, unless the reverse is stated ; “thus 20" in the Tables is equivalent to 7" 10™ a.m. in the Remarks. TABLE I.—Mean Westerly Declination for each Civil Day, as deduced from the Nine Daily Observations, for each Week, and for each Month in the year 1843. January. | February.| March. il. : June. July. August. |September.| October. |November.| December. —— = 25° 25° 25° 25° 25° 25° ¢ ‘ Uf , ‘ , 25-15 | 24-67 25-74 | 26-29 22.71 | [23-93]| 18-92 26-43 | [26-02] 23.28 | 23-76 | 20-73 27.07 | 26-66 55 |-[22-41]| 25-04 | 21-95 [25-96] | 26-79 20-03 | 24-01 | 21-95 25-82 | 26-78 23-20 | 24.20 | [21-35] 25-01 | 23-99 22.12 | 22.71 | 22.60 25-70 | 23-45 : 20-80 | 22-97 | 21-31 25-34 | 27-42 21-42 | [23-20]| 19-56 24.17 | [24-98] 22.71 | 23-04 | 20-12 25-67 | 26-28 . [21-92] | 23-27 | 19.32 [25-88] | 24-72 23.45 | 23-02 | 19-10 26-09 | 24-00 : 23-03 | [19-42] 25-27 | 24.25 : 24.09 | 19-99 28-75 | 29.24 . 23-73 | 18-90 28.37 | 23-97 [23-17] | 19-08 28.33 | [23-35] 22.66 | 19-16 23.84 22.96 | 19-26 22.16 22.56 | 19-87 23-67 : 19-33 | [19-32] 22.99 : 21.62 | 19-45 23-73 : 21-84 | 18-73 23-33 [21-62] | 19-47 [23-32] : 22.32 | 18-92 20-57 : : 29.23 | 19.27 26-13 . 22.37 | 18-81 23.96 [18-85] 23.74 22.80 22.81 [23- 46] 26-23 [22-88] 24-91 23-05 oonnrp wd = 25-41 : 24-44 24-12 25-80 24-19 23-03 21-67 22-53 19-61 MAGNETIC DECLINATION. 221 The quantities in brackets are the means of the three preceding and of the three succeeding numbers ; they are, therefore, the weekly means, and they may be considered as the approximate westerly declinations on the Sundays, whose place they occupy, and on which no observations were made. ' The means for the first week in January are means of the four daily observations in that week corrected by — 0°84. The means in the second week are the means of the eight daily observations in that week corrected by —0'14. These corrections were obtained by comparing the observations at the four and eight corresponding hours in 1844 with the observations at the nine hours corresponding to the observing hours in 1843. ANNUAL PERIOD OF DECLINATION. Differences of the mean westerly declination, deduced from the observations made in 1844 at the hours 18, 20, . . . 10, from that deduced from the 24 hourly observations made on each day (excepting Sundays) in that year. 24 Observations minus 9 Observations :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dee. —0'33 —0'-47 —0'°75 -—0-49 -—0-85 —0'-58 —0'°56 —0"68 -—0'-75 —-—0°76 —0'.73 —0':35 The variation of these differences is not sufficiently great to affect the character of the annual period, as de- duced from the monthly means at the foot of the previous Table. When these quantities are subtracted from the monthly means of the nine observations in 1843 we obtain the following :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 25°67 24.99 24/96 23-95 93/97 25/22 23/63 2235 20’92 21-77 187-88 19’.24 From these we see that the westerly declination diminishes very regularly till May, increases considerably from May to June, diminishes again regularly to November, with the exception of an increase in October, which, however, is nearly made up for by the more rapid diminution in November ; in December there is a slight increase. Tt will be found, Table III., that the retrogressive or secular change of westerly declination has a value of about 6’ in one year ; if we add proportional parts of this to the different monthly means, the annual period will be more distinct. The monthly means will then be, when the secular change is thus eliminated :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 25-67, 25:44, 25-26, 25:45, 25-27, 27-72, 26-63, 25-85, 24-92, 26-27, 23-88, 24.74, These means are still affected by the varying torsion force of the suspension-thread,—the error due to this cause cannot be eliminated ; it is probably greatest in the mean for June, in which month the suspension-thread broke. An examination of the variations of the plane of detorsion in several of the other months (see the notes to the Daily Observations of Magnetometers) will shew that the error from this cause is generally small ; keeping this in view, if a curve be run freely through the projected means for the 12 months, there seems to be a minimum of westerly declination about March, and a maximum perhaps in July or August. Having an eye to the result for 1844, and also to the result for the horizontal and vertical components of intensity, I am inclined to believe that the annual period of magnetic declination will be found to consist of a minimum at the vernal and a maximum at the autumnal equinoz. The means for the four seasons are— , Spring. Feb., March, and April, mean : : : ; : ; 25°38 Summer. May, June, and July, mean : ‘ , ; : 3 26:54 Autumn. Aug., Sept., and Oct., mean 4 5 ¢ : 5 25-68 Winter. Jan., Nov., and Dec., mean : : ‘ ‘ : : 24-76 These means indicate the maximum in Summer and the minimum in Winter; but there is little doubt that the mean for June is too high, and those for September, November, and December, too low, After correcting the monthly means of the nine observations to the monthly means of twenty-four observations, the mean westerly declination for the year 1843 is found to be 25° 22”85. MAG. AND MET. oss. 1843. 3k 222 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE II.—Mean Variations of Westerly Declination, after Eliminating the Secular Change, with Reference to the Moon’s Age, Declination, and Distance from the Earth, for 1843. Variations Variations || After |Variations| After | Variations || Before |Variations| Before | Variations Moon’s| of West | Moon’s} of West Moon | of West | Moon | of West and of West and of West Age. | Declina- | Age. | Declina- |/farthest| Declina- |farthest| Declina- || after | Declina- | after | Declina- tion. tion. North. tion. North. tion. Perigee.| tion. Apogee.| tion. Day. a Day. “ Day. x Day. y, Day. f Day. Z 15 0-85 0 0-19 0 1-05 14 1-28 rf 0-72 if 0-88 16 0-94 1 0-30 1 0-80 15 0-64 6 0-00 6 0-93 17 1:07 2 0-00 2 1-40 16 0-84 5 1-02 5 0-54 18 1-04 3 0-43 3 0-69 17 1-16 4 0-40 4 0-18 19 1-10 4 0-71 4 0-96 18 0-47 3 0-23 3 0-19 20 0-89 5 0-96 5 0-66 19 0-25 2 0-62 2 0-08 21 0-35 6 0-88 6 0-53 20 0-00 1 0-35 1 0-03 22 0-32 7 0-71 if 0-89 21 0-13 P 0-40 A 0-01 23 0-11 8 0-71 8 1-02 22 0-40 1 0-60 1 0-40 24 0-25 9 0-14 9 0-99 23 0-76 2 0-64 2 0-24 25 0-66 10 0-32 10 0-40 24 0-30 3 0-66 3 0.42 26 0-84 11 0-96 11 0-64 25 1-19 4° 0-85 4 1-23 PAT 0-06 12 0-92 12 1-42 26 1-11 5 0-82 5 0-89 28 0-30 13 1-04 13 1-03 27 1-24 6 0-75 6 0-67 29 0-32 14 0:73 7 0-60 ai 0-80 The above Table was formed from the daily means in Table I. in the following manner :—The mean westerly declination on the 12 days, between January 15. 1843 and January 4. 1844, on which the moon’s age was 15 days, — were summed together, similarly for 16 days old, 17 days old, . . . the means of these sums were then taken, and the differences from the lowest mean are given in the above Table. In these summations the approximate means for Sundays were used, as it was conceived that the want of any means on these days would affect the results more seriously than the use of the approximations. As in some lunations the 29th day was awanting, the mean of the declinations on the 28 day and the day of new moon was summed instead. For the variations of westerly declination with reference to the moon’s meridian altitude, the day on which — the moon was farthest north was numbered 0, and the days after this were numbered up to 26 or 27, the day before — the moon again attained its greatest north declination ; if there were only 26 days the mean of the declinations on the 26th and Oth day was substituted for the mean on the 27th day ; the mean westerly declination was then ob- tained for all the days of the same number from January 13. 1843 till January 3. 1844, each mean being the mean of the westerly declinations on 13 days; the differences from the lowest were then taken, and are inserted above. For the variation of westerly declination with respect to the moon’s distance from the earth, it will be seen in the foregoing Table that the days before and after apogee and perigee are numbered from 1 up to 7; in some instances there are only 5 days before apogee and 5 days after perigee, or before perigee and after apogee ; in these cases, for example, the 5th day before apogee has been numbered also as the 6th and 7th after perigee, and the 5th after perigee as the 6th and 7th before apogee ; when there are 11 days between apogee and perigee, or perigee — and apogee, the 6th is counted as the 6th and 7th before and after; when there are 12 days between, the 6th before apogee is counted as the 7th after perigee, and vice versa; when there are 13 days, the 7th day is counted as the 7th before and after, and when there are 15 or 16 days, the mean of the declinations for the 7th and 8th days is used as the mean for the 7th. The mean westerly declinations for the days with similar numbers, between — January 12. 1843 and January 5. 1844, were then obtained as in the previous cases, and the differences from the lowest mean are given in Table II. ; each number is the mean of 13. It would have simplified the summations, — and this statement of them, to have rejected the means on the 8th, 7th, and 6th days (of themselves they would have been useless), but it seemed better to combine them with other means nearly similarly related to the distance of the moon than to throw them away. a After the summations for each of the above cases had been performed, and the means obtained, the secular change was eliminated at the rate of 00165 per diem. The above statement will apply to the similar summations for the horizontal and vertical components of mag- netic force. MAGNETIC DECLINATION. 223 VARIATIONS OF WESTERLY DECLINATION WITH REFERENCE TO THE RELATIVE POSITIONS OF THE Sun, Moon, AND EARTH, AS INDICATED BY THE Moon’s AGE. A glance at the numbers in the first portion, Table II., shews, with some irregularities, which may be ex- pected where the effects of irregular causes have not been eliminated, the same result as is deduced from the means for the following groups, namely, that there is a maximum of westerly declination when the Sun and Moon are in opposition, and a minimum when they are im conjunction. Means of Groups. 19 days to 26 Sa 8 days including the Third Quarter, mean ; . : ‘ 0°56 Oe 8 coe aeiates he tees the New Moon, __..... : : H : 0:23 ee: UTR es UBS Seen or weeeeeeee the First Quarter, ...... Z , : ; 0°67 ee. LB Se oF LiGehacd. cee apthe Fall: Moon; ia. Ae : : ‘ : 0:94 The westerly declination also has its mean value at the quadratures. VARIATIONS OF WESTERLY DECLINATION WITH REFERENCE TO THE Moon’s DECLINATION. The second portion of Table II. gives the following :-— Means of Groups. , 4 days to 10 days, 7 days, including the Moon’s passage of the Equator southwards, mean 0°78 ih eee {kes eee cane Mee cm ecran aan aerate eons? greatest south declination, = = —........ 1:00 BON so. 6 Dae Sait tert PRe feed db aaatcten cantar os nant passage of the Equator northwards, ...... 0:33 22) ceo | CI MER BACHernaccucone Spondgneronsnoddecte . greatest north declination, = —...... LON | From these, and from the partial means, it appears that a maximum of westerly declination occurs both when | the moon has its greatest north and greatest south declination, the maxima being nearly equal, and that minima | occur about the time at which the moon crosses the equator, the principal minimum occurring when the moon is | moving northwards. VARIATIONS OF WESTERLY DECLINATION WITH REFERENCE TO THE Moon’s DIsTANcE From THE EARTH. The third portion of Table IT. gives the following :— Means of Groups. , Perigee, 3 days before it and 3 days after it, mean ° : : 0:50 8 days about the mean distance, the Moon moving from the Earth, mean . : : 0-69 Apogee, 3 days before it and 3 days after it, mean 4 : : 0°20 8 days about the mean distance, the Moon approaching the Earth, mean. ° : 0:72 As the periods of Apogee and Perigee in 1843 are nearly the same as of the moon’s passage of the equator, the results for the mean distance will be similar to those for the greatest north and south declination. It will | require two or three year’s results to determine to which period the changes are referable. As it is my belief that | the apparent variations of the magnetical elements with the moon’s dinjaiiee are really due to variations of declina- | tion, I have not in this, or in succeeding cases, pointed out the conclusions to which the means lead. 224 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE III.—Mean Westerly Declination at the Observation Hours for each Month in 1843. Month. 18. 20. 22. 23. 0. 2. 4, 6. 8. 10. 1843. 25° 25° 25° 25° 25° 25° 25° 25° 25° 25° January 24.29 24.96 24-58 27-50 28-95 27-13 25-85 25-04 24-03 February 23-94 24-21 24-71 27-84 29-41 27-65 25:92 23-97 | 21-06 March 22-65 23-14 22-83 27-15 29-78 28-52 25-14 24-05 21-85 April 21-36 20-67 22-78 27-78 31-19 28-37 24:06 22-32 21-45 May 20-76 19-79 21-95 27-05 29-72 27-05 24:55 23-63 22-54 June 21-69 20:56 23-39 28-91 31-70 29-52 26-15 25-34 25-00 July 20-44 20-09 22-17 27-17 30-04 27-71 25-15 23-48 21-42 August 19-80 18-48 21-77 26-89 29-31 26-15 22-47 21-15 21-26 September 19-48 19-55 20-74 25-82 27-51 24-94 21-29 18-98 16-76 October 20-97 21-46 21-84 26-37 26-67 24-14 21-90 20-66 18-77 November 18-55 18-80 18-97 20-37 22-02 22-06 20-99 19-76 17-93 17-43 December 19-00 19-02 19-56 20-53 21-57 22-42 21-05 19-73 17-27 16-69 Mean 21-08 20:89 22-11 26:34 28-23 26-10 23-50 21-98 20-69 The above Table is intended chiefly as a key for comparing the tabular observations. The mean at 18" in January is rendered comparable with the means at the other hours thus: the daily means from January 9 to 14, being the means of 8 daily observations, were corrected by —0’-14, obtained, as for Table I., in order to reduce them to the mean of 9 daily observations, then , ahi ies esanianns January 9—31, = 25:83 soeee January 16—31, = Jo2e Difference, 3 2 dick ro : e = 042 The mean for 18", deduced from the observations January 16—31, was therefore corrected by —0-’42, in order to reduce it to the mean from January 9—31 as for the other hours. q SECULAR CHANGE. By comparing the means at 20", 23", 2h, and 5%, the observation hours in 1842 (Table I., p. 1386, 1842), OF, ae peed 2 sa with the means at 2 for 1843, we obtain the following results for the yearly retro~ gression of westerly declination :— 20h 23h Qh 5h 1842, 26°61 29-80 33°80 30°40 1843, 20°89 24-22 28°23 24.80 Difference, 5:72 5:58 5:57 5:60 MAGNETIC DECLINATION. 225 TABLE IV.—Diurnal Variation of Westerly Declination for each Month in 1843. Period. January February March April May June July August September October November December Spring Summer Autumn Winter The Year Table IV. has been obtained from Table III. in subtracting the lowest mean in each month from all the other means. Spring in the above Table consists of the months of February, March, and April. DIURNAL VARIATION OF DECLINATION. The least westerly declination occurs in the first three and last four months of the year, at or after 95 10™ p.m. Makerstoun mean time; in the remaining five months at 7? 10™ a.m. Mak. The greatest westerly declination occurs in each month at 1" 10™ p.m., but in the winter months the maximum probably occurs before this time. The westerly declination increases with more rapidity to the maximum at 1" 10™ p.m. than it diminishes after it, and in nine months the rapidity of diminution is less after 5" 10™ p.m. than before it. In the winter months, the westerly declination does not begin to increase rapidly till 9" 10™ a.m., whereas in summer, it does so at 7° 10™ a.m. While this fact seems to shew some relation to sunrise, there is no corresponding one to sunset, but rather the reverse ; for in winter the westerly declination diminishes with nearly equal rapidity from the maximum at 15 10™ p.m. till 9 10™ p.m., whereas in summer, on the whole, the rate of diminution seems to receive a check about 5> 10™ p.m. The minimum of westerly declination occurs in spring, autumn, and winter at or after 9" 10™ p.m.; in spring and autumn a secondary minimum also occurs about 6" 10™ a.m. In summer the principal minimum occursat 7210™a.m. The principal maximum occurs about 0° 40™ p.m. in winter, and about 1" 10™ p.m. in summer. In the mean for the year The maximum of westerly declination occurs about 1" O™ p.m. Makerstoun mean time. AN TG) Timbarnpooa com con De bod naa AoA BEG Bon ECG neotoe Ghiters |) IO) ante aisisiela(eieisialieletajiare(eia\a(e A minimum -----. otigico con dog asessaccaces.ccs, BIIGTh 7 QO) SARI Neiviclsisinte cis\ewistvnreieieninalereea The exact periods of the principal minimum, and of the secondary maximum, cannot be determined from these observations ; they are found, however, from the Term-day Observations in the years 1842 and 1843. The fol- lowing Table contains the results of the summations of the observations at 0™ on 11 Term-days of 1842 (January Term-day being rejected), and on 11 Term-days of 1843 (June Term-day being rejected). MAG. AND MET. oBs. 1848. oD 226 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE V.—Diurnal Variation of Westerly Declination deduced from the Observations at 0™ on 11 Term-days in 1842, and also on 11 Term-days in 1843. 1842. | 1843. | Mean. Both years give nearly the same result; the observations at 10" and 11" Gott. M.T. are affected by dis- turbances in 1842. The mean shews :— The maximum of westerly declination, about 05 40™ p.m. Makerstoun mean time. The minimum ceereeeecesescccsercccsesevencessereces 108 10™ p.m. A secondary YOAXIMUM «eee eercccececcscececscacs 95 10™ a.m. A secondary minimum: +:+-s+ss++sseeeeseeeeeeneeees 7h 10™ a, RANGES OF THE MontTHLY MEANS OF THE DIURNAL VARIATION. The ranges given in the last column of Table IV. are probably very near the truth, for though the mini- mum takes place after 105 Gott. M.T., the diminution after that time must be small. The range increases considerably from January to April, and diminishes as much from September to December, but there is little difference in the ranges of the six months from April to September. The range of the means for the summer quarter is twice as great as the range of the means for the winter quarter, the former being 10-34, and the latter 5°09. MAGNETIC DECLINATION. 2 20 TABLE VI.—Diurnal Range of Magnetic Declination for each Civil Day, as deduced from the Nine Daily Observations, with the Mean for each Week and for each Month in 1843. ta ( %i / , , tf , , feet 3-19 3-60 | 11-05 | 10-54 | 15-41 | 17-36 | 11-00 | 14.29 4-84 4-05 5-09). ita7si) aie 14.88 | [13-93] | 11-95 | 21.77 7-27 3-47 4-50 | 15-84 | 683 | 17-63 | 15-03 | 12-62 | [14-75] 2-56 3-54 9-77 | 12-18 | 12.98 | [19-75] | 8.97°'|"19'10 |’ 13:28 2.38 | [12-79] | [10-38] | 19.49 9-75 7-75 7-84 7.16 | 11-89 3-60 | 49-03 | 15-14 | 33-38 | 25-50 8-80 7-63 | [13-30] | 13-29 3-94 9-70 | 21-85 | 13-78 | [12-85] | 12-05 8-17 9-46 9-64 [4-32] | 6-93 5-72 | 14-37 737 7-73 | 10-56 | 13-47 | 11-02 6-06 Sua 5-35 |[15-70] | 9-18 9-04 | [9-81] } 18-02 | 16-44 5-31 7:86 5-10 7-97 | 12.55 | 16-20 | 14-32 | 10-01 | [12-13] 4-66 581, | 12:07. |. 13:36 6-62 | [10-77] | 10.95 | 12-96 | 13-17 ag) [10-72] | [7-59] | 11-38 || 12-68 8-64 7-92 | 15-51 8-75 5:02 | 22-54 9-42 | 10-22 Gs6alele72. |, 1235 | i-oly | 13-74 4-39 | 11-18 7260 29° | Tot7] | 931 9:55 | 13-03 | 10-34 [5-59] | 8-18 Berea cisele) |) GeRey 9-39 | 11-70 | 10-98 9-01 9-42 | 15-25 8-67 | [10-87] | 8-85 9-25. |[10-77] | 7-19 8-07 4-87 4-57 7-82 | 11-36 7-23 9-43 | 10-26 | 10-56 | [13-06] 5-45 5-69 | 21-56 8-38 9-87. | [9-70] | 10-87 8-27 | 21-83 6-51 | [7-23] | [12-47] | 10-55 9-32 7-00 9:91 | 11-77 | 15-92 4-85 Aves | 1419) | d0-22 8:17 | 11-70 8-98 | [10-83] | 13-18 5-81 6-59 7-80 | 10-38 | [9-51] | 11-45 | 10-00 | 10-28 | 17-99 [6-75] | 6-48 | 14-80 5-30 Tea nee 11-61 | 14.27 | 12-86 9-25 6-19 8:69) | {9-26 laa O-Soumiser- ns: [16-04] | 9-85 | 11-03 6-86 | 23-44 8-29 9-82 | 13-05 | 13-98 | 32-85 8-77 | [12-72] 7-22 | 12-30 8-61 | 10-05 | 15-02 | [1434] | 17-92 | 10-76 9-89 6-32 | [9-68] | [11-47] | 9-80 | 16-33 | 16-49 | 14-88 | 11-83 | 15-57 4.98 3-81 8-36 | 12-13 | 13-57 | 13-79 | 12-95 | [11-09] | 98-98 11-85 8:74 | 19-12 | 12-02 | [13-25] || 13-12 | 11-84 | 10:17 | 11-04 [5-93] 25-78 | 11-74.) 15-17 8-76 | 14-86 | 12-87 9-30 5-85 9-22 | [10-65] | 9-16 | 25-60 | [12-29] | 12-12 7-07 3-40 8-92 10-27 11-14 | 13-99 me ns ee | Ss | || | | Mon tHty MANS OF THE DiuRNAL RANGES. 5-66 10:09 | 10-12 12-38 11-00 12-13 12-30 11-78 12-67 January. | February.| March. April. May. June. July. August. |September.| October. [9-35] 6-91 12-79 9-00 21.48 9-77 7-06 [9-44] 8-07 3-55 6-71 8-61 9-63 10-98 [10-41] 14.97 6-91 11-39 8-84 7:97 4.27 [6-96] 5-92 8-74 6-00 25-14 6-06 5-18 [11-77] 9-60 15-43 9-65 November.| December. ‘ 9.22 8-17 12-74 9°85 te 11-80 9.37 [6-71] 4-06 5-99 [7-92] 7-63 The means of the diurnal ranges for January, November, and December, do not differ much from each other, but they differ considerably from the means for the remaining nine months, which differ little from each other. The means for the four seasons are :— Winter; January, November, and December, mean of diurnal ranges, Sprung; Bebruary, March, and April we aic sie. detewe cede sons sae sees Odes Sommens May, dunes, andi Sly, .. oecticne nc iteesadanacceseeveabinuaee Autumn + “August, September, and October, -...c.02226<.- cases ses vaeiaves LN SSHNAGE ras tea iets Unread Haiifesaieteoaeuiat Locsecaaiveinai te teweseruen The quantities in Table VI. shew that the monthly means are much affected by irregular disturbing causes, and that if some of the larger diurnal ranges were removed, the monthly means would differ little from the ranges of the monthly means of the diurnal variations, ‘It is obvious that the means of the diurnal ranges only differ from the diurnal ranges of the means in that the minimum or maximum of certain days does not oc- 228 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. cur at the same hour as the minimum or maximum of the monthly mean; as these departures from the mean are probably due to irregular disturbing causes, the following differences may be taken as some measure of these disturbances in the different months of the year :— Monthly Means of Diurnal Ranges minus the Ranges of the Monthly Means of the Diurnal Variation :— Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. O44 210-186-0709 9 235-090 1492 a oo The difference is a minimum in January, it increases to a maximum in March, diminishes to a minimum in June; and, if we except the sudden increase in July, it again becomes a maximum in September. The means of the differences for the four seasons are :— Winter; January, November, December, mean . ; P eee = 2 1-29 Spring; February, March, April, __...... ; : E : : ; 1:93 Summer; May, June, July, ey roe fs : A : : : 1:47 Autumn; August, September, October, ...... . . : 3 : : 1:54 From this we are perhaps entitled to conclude, that a certain class of disturbances have their greatest effect at the equinoxes, and their least effect at the solstices. Those disturbances which increase the diurnal range of the mean are evidently not included in this result. TABLE VII.—Means of the Diurnal Ranges of Magnetic Declination with reference to the Moon’s Age and Declination for 1843. After Moon After Moon Moon’s Age. | Mean Range.| Moon’s Age. | Mean Range. farthest |Mean Range.| farthest |Mean Range. North. North. D ay. 0 1 2 3 4 5 6 7 8 9 OOIAHMAAWNH OG This Table has been formed from Table VI. in the manner already described, Table II. HorizontaL CoMPONENT OF MAGNETIC FORCE. 229 VARIATIONS OF THE DIURNAL RANGES OF MAGNETIC DECLINATION WITH REFERENCE TO THE RELATIVE POSITIONS OF THE Sun, Moon, AND EARTH, AS INDICATED BY THE Moon’s AGE. The partial means are very irregular, their general aspect when projected is that of a maximum near the time of new moon, and a minimum near the time of full moon ; in groups, the results are as follow :— 19 days to 26 days, 8 days including the Third Quarter, mean 4 H : 9:70 | Ee aa Sh eae Ty eas Rr as New Moon, _....... 5 ‘ . 10-41 1 Ne oP 8) ee ee tiea's First Quarter, ...... P s . 11:01 fe lo)... 1 PRO Seat ed ore aan Full Moon, Seine A : . 10:04 From these means the maximum would appear to occur in the First Quarter, and the minimum in the Third Quarter. VARIATIONS OF THE DIURNAL RANGE OF THE MAGNETIC DECLINATION WITH REFERENCE TO THE Moon’s DECLINATION. In the partial means there is an appearance of a secondary maximum at the moon’s greatest south declination, but this disappears in the following means :— 4 days to 10 days, including the moon’s passage of the Equator southwards, mean 10°11 ieee hy MARR een en oa Aneca temee greatest south declination, = = SS... 9-64 Gh aes Oe a RS SPN OAL at a Bees passage of the Equator northwards, ...... 10:05 Oa sles as SD Lieldisse eee telee meter Pease eettiepisieite greatest north declination, = —_....... 11-27 Or, the diurnal range of the magnetic declination is a maximum when the moon has its greatest north declination, and it is a minimum at the time of the moon’s greatest south declination. HorIZONTAL COMPONENT OF MAGNETIC FORCE. TABLE VIII.—Mean Values of the Variations of the Horizontal Component of Magnetic Force, the whole Horizontal Component being Unity, for each Civil Day, as deduced from the Nine Daily Observations, for each Week, and for each Month, in the Year 1843. January. | February.| March. April. May. June. July. August. |September.| October. | November.| December. 0:00 0:00 0-00 0:00 . 0:00 0:00 0:00 0:00 0:00 0:00 0:00 0°00 [----] | 1645 | 1808 | 1804 | 2068 | 2722 | 2988 | 2766 | 3093 | [2982] | 3572 | 3695 1353 | 1780 | 1952 | [1540] | 2033 | 3097 | [2722] | 2537 | 3200 | 2617 |. 3851 | 3695 1531 | 1761 | 1973 | 1533 -| 2418 | 2569 | 2765 | 3476 | [2904] | 2862 | 3204 | [3911] 1589 | 2386 | 1991 1420 | 2455 | [2791] | 2508 | 3025 | 2590 | 3342 | 3919 | 4059 1649 | [1928] | [1670] | 1613 | 2323 | 2566 | 2499 | 2638 | 2449 | 2863 | [3487] | 3969 1766 | 2003 | 1736 | 0848 | 1807 | 2722 | 2443 | [2745] | 2949 | 2728 | 3600 | 3926 1955 | 1820 | 1114 | 1097 | [1995] | 3067 | 2814 | 2870 | 2638 | 2899 | 3294 | 4318 flees] | 1815 '| 1255 | 1729 "i037 | 9265) 9360 | 2478 | 2759 | [2923]'|. 3056 | 3688 2148 | 1379 | 1636 | [1320] | 1664 | 2432 | [2557] 1 1984 | 2752 | 2833 | ...... 4670 USGS s:)e 7180 0! 1603 214.1185» |°2685' 13352") 2675 | 2679" | [2794] | e977. |... [4122] 1741 | 1574 | 1708 | 1276 | 2197 | [2622] | 2630-| 2626 | 2771 | 3241 | 3201 | 4059 1695 | [1570] | [1456] | 1784 | 2087 |. 2679 | 2495 | 2754 | 2958 | 3321 | [3307] | 3943 1809 | 1778 | 1079 | 1620 | 2925 | 2993 | 2775 | [2644] | 2886 | 3353 | 3408 | 4055 1695 | 1247 | 1220 | 1594 | [2364] | 2711 | 2667 | 2470 | 3342 | 3337 | 3340 | 4113 [1s94] | 1726 | 1493 | 1365 | 2900 | 2511 | 2944 | 2524 | 3989 | [3291] | 3343 | 4265 2358 | 1907 | 1029 | [1693] | 2270 | 2415 | [2762] | 2812 | 3398 | 3655 | 3410 | 4420 | 1951 | 1941 | 1254 | 1871 | 2504 | 2598 | 2701 | 2944 | [3249] | 2747 | 4005 | [4326] 1855 | 1835 | 1667 | 1919 | 2519 | [2735] | 2652 | 2897 | 3613 | 3335 | 3816 | 4238 TAG. AND MET. oBs. 1843. 3M 230 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE VIII.—Continued. Day. January. | February.| March. April. May. June. July. August. |September.| October. | November.| Decembi 0:00 0:00 0-00 0-00 6-00 0-00 0-00 0:00 0:00 0-00 0-00 0-00 19 1638 [1817] | [1509] 1790 2567 2903 2832 2617 2731 3678 [3972] 4566 20 1760 1716 1440 1850 2453 3189 2588 [2890] 3119 2885 4236 4355 21 1926 1739 1564 1838 [2653] 2797 3033 3008 2818 3505 4218 4473 22 [1703] 1764 2099 1748 3003 2929 2805 3086 3141 [3370] 4144 4564 23 1321 1906 1760 [1942] 2734 2552 [2836] 2856 3287 3482 3807 4589 24 1940 1467 1278 2060 2643 2857 3829 2874 [2961] 3218 4531 [4500 25 1637 1577 1732 2057 2718 [2751] 2911 2712 2993 3451 4459 4672 26 1524 [1744] | [1655] 2099 2649 2823 1852 2400 2619 2866 [4213] 4472 27 2033 1856 1576 | eeeeee 2692 2648 2343 [2854] 2908 3093 4478 4230 28 1434 1855 1825 | «++: [2830] 2693 2302 2935 2672 3458 3992 4092 29 [1635] 1760 2115 3380 3152 2731 3100 3093 [3232] 4013 415) 30 1609 1160 [2158] 2782 3120 [2547] 3106 3308 2875 4076 4122 31 1566 1708 2758 2604 3146 3526 [4292 Mean 1744 1758 1571 1662 2428 2756 2653 2787 2976 3160 3790 4207 Table VIII. was formed in the following manner :—the means of the bifilar magnetometer scale readings, corrected for temperature, for each civil day, were first obtained, and these means were reduced to parts of the horizontal component by the following formula :— Jan. April 29—May May 8—Nov. 8. Nov. 11—Dec. 31. 1—April 26. = (n — 530) 00001021 + 0:001000 6. f= (mn — 488) 00000986 + 0-:001000 = (n — 485) 00000986 + 0:001000 = (n — 485) 0:0001064 + 0-001000—0-000008 where f is the quantity in the previous Table, n the mean scale reading corrected for temperature. The Bifilar magnetometer was twice adjusted in 1843 (see Introduction, No. 38). As the means for the three days immediately preceding the adjustment on April 27—28 were nearly equal to each other, and the means for the three days succeeding the adjustment were also nearly equal to each other, it was assumed that the mean force, n, for the three days succeeding the adjustment was equal to that, n’, for the three days preceding it. 5380 having been taken as a convenient zero for the means before the adjustments, z the zero for the means after the adjustment was obtained from the formula (n— 530) 00001021 = (n/ —z) 0:0000986 whence z = 488. : On May 6 the torsion circle was turned, and was not returned to its previous position, producing a dif- ference of about three scale divisions, the zero after May 6 is therefore 485. On the adjustment, Nov. 9-10, the same process was adopted as for that of April 27-28, which gave the zero nearly as before, 484:93 ; 0:001000 has been added to each mean in order to render them all positive. The means of the four daily observations in the first week of January were corrected by —0-000025, and the means of the eight daily observations in the second week by +0-000016, corrections to the mean of nine — observations obtained by comparisons of the observations in 1844. The factors used for the above and following Tables in converting the scale divisions into parts of the whole horizontal component, are those given in the Postscript to the Introduction. ANNUAL PERIOD OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE. Differences of the monthly means deduced from the observations in 1844, at the nine hours of 18, 20, 10, from those deduced from the 24 hourly observations made on each day, excepting Sundays, in that year. =a HorIZONTAL COMPONENT OF MAGNETIC FORCE. 231 24 observations minus 9 observations. Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 0:0000 | —36 -61 — 69 + 24 — 24 +13 +29 — 34 +68 +46 —06 — 28 These quantities being applied as corrections to the monthly means, foot of Table VIII., we obtain the following :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dee. 0:00| 1708 1697 1502 1686 2404 2769 2682 2753 3044 3206 3784 4179 From these it appears that the horizontal component diminishes from January to March, increases from March to June, diminishes again slightly from June to between July and August, and then increases again till December ; the whole range being 0:002677, and the increase of force from January to December being 0:002471. The annual period can only be rendered distinct when this secular change is eliminated. It has been found by a comparison of the monthly means of 1843 with those of 1842 and of 1844, that the mean annual change during the 12 months of 1843 is 0002826. When proportional parts of this are subtracted from the means after January, we have— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 0-00| 1708 1462 1031 0980 1462 1592 1269 1105 1160 1087 1429 1589 We have here a well marked annual period, consisting of maxima near the solstices, and minima near the equinoxes. The maximum is rather greater in the winter than in summer, but the difference is less than the effect of half a degree Fahrenheit on the bifilar magnet. The range of the annual period is 0:000728, or about half the mean diurnal range for the year. It may be desirable to examine the annual period for the year 1842 in a similar manner. If we reduce the monthly means of four observations, Table 1X., Abstracts for 1841-2, to parts of force by the formula Ff = (n — 530) 00001021 + 0:003000 where n is the mean in scale divisions in the Table referred to, we obtain the following values of f, which may be rendered comparable with the means, Table VIII., by subtracting 0:002000. The second line below con- tains the corrections for each month of the 4 observations to the 24 as deduced from the observations for 1844, and the third line contains the corrected means, Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 0-00 0960 0994 1188 0840 1646 1803 (1743 1836 2016 2488 2772 3270 0-00 } —0057 —0045 —0003 +0294 +0245 +0309 +0352 +0390 +0318 +0187 +0068 —0020 0-00 0903 0949 1185 1134 #«1891 2112 2095 2226 2334 2675 2840 3250 If the secular change be assumed the same for 1842 as for 1843, and if this be eliminated, we have— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dee. 0-000 | 903 714 714 428 949 935 682 578 450 556 485 660 These means shew the same law as the means for 1843, with more irregularity, it is true, but this may be accounted for by the fewness of the observations, and the possible inaccuracy of the corrections. 232 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE IX.—Mean Variations of the Horizontal Component of Magnetic Force, after eliminating the Secular Change, with reference to the Moon’s Age, Declination, and Distance from the Earth, for 1843. ‘Variations Variations || After | Variations | After | Variations || Before | Variations | Before | Variations Moon’s| of Hori- | Moon’s| of Hori- Moon of Hori- Moon of Hori- and of Hori- and of Hori- Age. zontal Age. zontal farthest zontal farthest zontal after zontal after zontal Component, Component. || North. | Component.} North. | Component. || Perigee.| Component. | Apogee.| Component. 0:000 Day. 0:000 Day. 0:000 Day. 0-000 Day. 0-000 Day. 0-000 000 0 288 0 263 14 224 ih 328 7 145 199 1 213 1 201 15 182 6 256 6 061 117 2 322 2 292 16 103 5 249 5 232 245 B3 260 3 246 17 119 4 000 4 173 169 4 288 4 013 18 204 3 091 3 225 246 5 311 5 000 19 234 2 239 2 191 299 6 242 6 034 20 274 1 192 1 242 300 Wl 115 Zi 126 21 138 iP 197 A 144 196 8 178 8 243 22 228 1 242 1 320 328 9 083 9 188 23 191 2 251 2, 256 251 10 038 10 089 24 182 3 219 3 253 313 11 090 Wil 329 25 224 4 263 4 238 350 12 125 12 223 26 151 5 311 5 250 359 13 043 13 247 27 223 6 338 6 364 229 14 173 ii 222 7 342 Table IX. was formed from Table VIII. in the manner indicated for the magnetic declination, Table IT. VARIATIONS OF THE HoriIzoNTAL COMPONENT OF MAGNETIC FORCE, WITH REFERENCE TO THE RELATIVE POSITIONS OF THE SUN, Moon, AND EARTH, AS INDICATED BY THE Moon’s AGE. The partial means in the first portion of Table IX. shew distinctly what is more distinctly evident in the following means, namely, the maximum about the period of new moon, and the minimum at the period of full moon :— Means of Groups. 14 days to 16 ae Full Moon, 0:000124 29 days to 1 os New Moon, 0:000243 Ny eee 20 0:000194 2a SENS 5 0:000295 Dili Xcsin ye oki sli 0:000278 Oder rs Se ieiie 0:000154 PAR postion 28 0.3. 0:000318 HOS. ek isis 0:000074 It should be remarked that there is a secondary minimum shewn in these means at the time of new moon; this would not have been seen so distinctly, or at all, had larger groups been taken. As this minimum is also shewn, and nearly to the same extent in the mean for 1844,* it may be allowable to conclude, that the principal minimum of the horizontal component occurs at the period of full moon ; a secondary, and not very de- cided minimum, at the period of new moon ; and maxima, nearly equal, immediately before and after the period of new moon. * Transactions of the Royal Society of Edinburgh, Vol. XVI., Plate IV. HoriIZONTAL COMPONENT OF MAGNETIC ForRcE. 233 VARIATIONS OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE, WITH REFERENCE TO THE Moon’s DECLINATION. Means of Groups. i days to 1 oP Moon farthest North, 0:000232 13 days to 15 Cae Moon farthest South, 0:000218 or Serres , 0:000138 LOW cc LO 0:000165 : ees oss 0:000184 PAV an Rong PP) eer 0:000213 Dee dacs ies, 0:000207 AES SEE 26) sc. 0:000187 From these means we may conclude that there are maxima when the moon has its greatest north and south declination, and minima when its declination is zero; the principal minimum occurs when the moon is on the equator moving southwards. VARIATIONS OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE, WITH REFERENCE TO THE Moon’s DISTANCE FROM THE EARTH. Means of Groups. 6 days after Apogee to 6 days before Perigee, 0'000322 | 6 days after Perigee to 6 days before Apogee, 0:000191 5 days to 2 days before Perigee, . . . 0:000145 | 5 days to 2 days before Apogee, . . . 0:000205 1 day before to 1 day after Perigee, . . 0:000210 | 1 day before to 1 day after Apogee, . . 0°000235 2 days to 5 days after Perigee, . . . 0:000261 | 2 days to 5 days after Apogee, . . . 0°000240 TABLE X.—Means of the Bifilar Magnetometer Readings Corrected for Temperature, at the Observation Hours for each Month in 1843. Month. 18h, 204, 22h, 23h, 0h, 2h, 4h, 6h. 8h, 104. Se. Div. Se. Div. Se. Div Se. Diy. Se. Div. Se. Diy. Se. Div. Se. Div. Se. Div. Se. Div. January 538-:10 | 537-95 | 533-71 534-11 | 538-80 | 540-62 | 538-19 | 537-11 | 537-41 February 535-84 | 539-04 | 533-72 534-93 | 538-23 | 540-14 | 537-43 | 538-34 | 537-39 March : 534-90 | 534-22 | 528-48 528-07 | 535-96 | 540-36 | 540-54 | 538-30 | 537-34 April 534-53 | 533-37 | 524-37 525-56 | 536-19 | 543-66 | 548-25 | 542-26 | 536-90 May 496-79 | 492-82 | 486-56 489-30 | 501-94 |} 506-84 | 512-85 | 512-56 | 501-77 June 500-47 | 495-70 | 488-00 491-42 | 502-11 508-64 | 512-19 | 515-87 | 510-96 July 497-55 | 495-32 | 486-07 488-08 | 499-48 | 512-98 | 515-88 |} 513-74 | 506-85 August 498-64 | 494-37 | 487-41 491-91 505-11 512-13 | 514-71 512-69 | 511-20 September 505-50 | 500-25 | 491-77 496-61 | 505-57 | 512-57 | 509-50 | 510-72 | 509-48 October 908-03 | 504-51 | 495-66 497.44 | 508-25 | 512-18 | 512-64 | 512-31 511-17 510-60 | 509-00 | 503-19 | 501-43 | 503-77 | 512-41 515-16 | 516-06 | 513-70 | 509-29 November ee Oe SS SU SS | |) | | 513-69 | 513-08 | 508-73 508-45 | 510-06 | 513-66 | 514-04 | 514-41 512:09 | 512-10 December 518:08 | 518-14 | 514-01 | 513-52 | 513-64 | 514-38 | 516-53 | 514-82 | 514.48 | 512-97 Table X. is intended chiefly as a key for comparing the tabular observations. The cross lines indicate breaks in the series from new adjustments, which will be found alluded to after Table VIII. MAG, AND MET. OBS. 1848. ; 3N 234 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. The mean at 18% in January is rendered comparable with the means at the other hours thus; the daily means from January 9-14, being the means of 8 daily observations, were corrected by + 0°15 sc. div., obtained as for Table VIII., in order to reduce them to the mean of 9 daily observations, then,— Se. Div. Mean of Bifilar readings, January 9-31, = 537°36 Jes len baple Ptah itdertne ee savesuaceses-L DOL, a= Hee Difference, ==! 0:22 The mean for 185 deduced from the observations January 16-31, was thuefore corrected by + 0-22, in order to reduce it to the mean from January 9 to 31, as for the other hours. TABLE XI.—Diurnal Variations of the Horizontal Component of Magnetic Force in 1843, the whole Horizontal Component being Unity. Periods. Months. 0-00 : ‘ : 0:00 0-00 0-00 January 0433 0705 | 0457 | 0347 February 0543 0655 | 0379 | 0472 March 0628 1255 | 1273 | 1045 April 0919 2 1969 | 2438 | 1827 May 0617 1999 | 2591 | 2563 June 0759 2034 | 2384 | 2747 July 0912 2653 | 2938 | 2727 August 0686 2437 | 2691 | 2492 September 0836 2050 | 1747 | 1867 October 0872 . 1629 | 1674 | 1641 November 0495 0745 | 0799 | 0555 December 0550 0379 | 0196 | 0160 Quarters. Spring 0683 1279 | 1349 | 1101 Summer 0763 2229 | 2638 | 2679 Autumn 0798 2039 | 2037 | 2000 Winter 0456 0573 | 0447 |-0317 Half-Years. Winter 0562 0869 | 0771 | 0678 Summer 0788 2190 | 2465 | 2370 The Year 0674 1529 | 1617 | 1524 SECULAR CHANGE OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE. The mean change of the horizontal component from 1842 to 1843 has been determined in the following manner. ' By the means for the year 1844, it has been found that the mean of the observations at 22 and 0}, is greater than the mean at 23" by 0:000162, and that the mean of the observations at 4 and 64 is greater than the mean at 5" by 0:000027, whence from the last line of Table XI.,— Mean of 224 and 0 = +0°000092, corrected to mean for 23 = —0-000070 Mean of 42 and 6" = +0:001573, corrected to mean for 5 = +0°001546 = HorIzontaL Component OF MAGNETIC Force. 235 The last itis of Table XI. also gives the mean of the horizontal component for the year greater than the mean at 22» by 0:000960, and, from Table VIII., the mean?of the horizontal component for the year 1843 =0:002624, whence— Mean at 20" less than the mean for the year by 0:000286, or = 0:002338 Leer 2 NRO ae aS S828 Sd, Sak eC 0:001030, or = 0:001594 MMcaMicaty 2” OY CALCK Ss ae dapemtaee Lect s acs sa «een 0:000056, or = 0:002680 Micanrat OF... .ssu Senecio eer alee sara visisieiaie'elate 0000586, or = 0-:003210 From Table IX., Abstracts for the Observations of 1842, we obtain the following means in scale divisions :— 1842. 205 = 514:56, 23 = 510:09, 2h = 521-82, 55 = 526°37. Converting these means into parts of force by the first formula given after Table VIII., we obtain the following results :— 20%. 23h 2h. 5h. 1842. —0:000576, —0-001033, +0:000165, +0-000629 1843. + 0:002338, +0-001594, +0°002680, +0°003210 Secular Change. +40:002914, +0:002627, +0:002515, +0:002581 Mean Secular Change, 1842 to 1843, = +0-002658 DIURNAL VARIATION OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE. The means of the nine observations in Table XI. indicate two maxima and two minima in the months of January, February, November, and December ; only one maximum and one minimum is visible in the means for the remaining months. ‘The means for the four seasons are types of the months which compose them. The principal minimum occurs in each month, and in the mean for the year about 9" a.m. The principal maximum occurs at 3 10™ p.m. in winter, about 4" 10™ p.m. in spring and autumn, at 6" 10™ p.m. in summer, and at 5" 10™ p.m. in the mean for the year. A secondary maximum occurs in winter about 6" a.m. The principal maximum in December occurs at 6" 10™ a.m., in all the other months the principal maximum occurs in the afternoon. In order to determine the periods of the secondary maximum and minimum, the observations made at 0™ on the Term-days of 1842 and 1843 have been made use of. The observations in 1842 were corrected by the temperature coefficient obtained by the method of deflections, those of which the means are given in the following Table were farther corrected by the coefficient — 0-46 Sc. div., the difference between the temperature coefficient obtained from deflections and that deduced from comparisons of the daily observations. The means in the following Table are then deduced from the observations at 0™ in 1842 thus corrected, and the observations at 0™ in 1848, as corrected in this volume. The winter solstice includes the months of November, December, January, and February, 1842 and 1843; the equinoxes, March, April, September, and October, 1842 and 1843 ; and the summer solstice, May, June, July, and August, 1842 and 1843. TABLE XII.—Diurnal Variation of the Horizontal Component of Magnetic Force deduced from the Observations at 0™ on the Term-days of 1842 and 1843, the whole Horizontal Component being Unity. ee Equinoxes. ace 1842. 1843. Mean. ]| Hour. eee, Equinoxes. aes 1842. 1843. 0:00 0-00 0:00 0-00 0-00 0:00 ‘| 0-00 0-00 000 0-00 0-00 0505 2336 1547 1852 1045 1449 22 || 0169 0224 0005 0156 0080 0430 1806 1729 1417 1198 1308 23 0042 0000 0000 0000 0000 0349 1852 1814 1328 1320 1324 0 0000 0361 0337 0342 0095 0614 0872 1649 1010 1051 1031 1 0250 0861 0686 0656 0514 0445 1492 1425 1224 0989 1107 2 0531 1357 1420 1335 0842 0614 1375 1174 1022 ‘1058 1040 3 0731 1845 1520 1532 1170 0558 0766 1242 0607 1075 0841 4 0755 1957 1881 1663 1370 0486 1377 1190 0972 1035 1004 5 0757 1942 1996 1656 1446 0741 1477 0784 0987 0986 0987 6 0724 1899 2197 1832 1352 0818 1550 0482 0984 0887 0936 a 0522 1681 2466 1714 1370 0655 1191 0324 0646 0772 0709 8 0636 1376 2224 1416 1380 0517 0861 0234 0526 0520 0523 9 0556 1404. 2140 1356 1349 Mean. 236 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. Besides the occurrence of some considerable disturbances, the number of observations seems too few to exhibit the secondary maximum and minimum well. The results for the principal maximum and minimum are the same as those deduced from Table XI. It may perhaps be added, as true for both, that the principal mini- mum occurs nearer noon in winter and summer than at the equinoxes. The secondary minimum occurs near midnight in the mean for the months about the winter solstice ; per- haps about the same time in the mean for the months about the equinoxes, but this part of the diurnal curve is very irregular from disturbances ; the secondary minimum cannot be said to be at all visible in the mean for the months about the summer solstice, and it is very imperfectly shewn in the means for the year. The secondary maximum occurs about 6 A.M. in the winter solstitial and equinoctial months, and perhaps earlier in the means for the year. RANGES OF THE MonTHLY MEANS OF THE DIURNAL VARIATIONS OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE. * The quantities given in the last column of Table XI. are rather less than the true ranges, the minimum occurring near 23", The least diurnal range is that for December, and the greatest that for July. The range is nearly constant for the winter months, and also for the summer months, the most rapid increase occurring at the equinoxes; the following means will exhibit the rate of increase ;— Jan. & Dec. Feb, & Nov. March & Oct. April & Sept. May & Aug. June & July. Ranges, 0:000627 0:000727 0001473 0:002244 0:002641 0:002842 Differences, 0-000100 0000746 0000771 0°000397 0:000201 The range of the monthly means is more than four times as great for the summer as for the winter months. TABLE XIII.—Diurnal Ranges of the Horizontal Component of Magnetic Force for each Civil Day, as deduced from the 9 Daily Observations in 1843, with the Weekly and Monthly Means. January. | February.| March. April. May. June. July. August. |September.| October. | November.) Deceml 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 [------] | 0067 | oo46 | 0214 | 0231 | 0322 | 0385 | 0266 | 0328 | [0220] | 0194 | Off 0067 0045 0109 [0389] 0249 0308 [0344] 0230 0375 0206 0192 021 0127 0092 0091 0190 0213 0207 0378 0461 [0294] 0175 0237 [01% 0089 0070 0113 0215 0198 [0271] 0395 0696 0278 0204 0169 0111 [0104] [0172] 1265 0302 0285 0251 0319 0278 0261 [0162] 0173 0162 0174 0515 0939 0229 0224 [0425] 0281 0212 0097 0029 0172 0346 0207 [0447] 0272 0289 0287 0217 0240 0155 {0138] 0085 0199 0391 0476 0278 0412 0255 0265 [0226] 0124 0227 0088 0189 [0331] 0288 0224 [0330] 0528 0405 0239 | esos. 0104 0092 0139 0197 0482 0302 0442 0427 [0252] 0182 saleoas 0187 0142 0169 0289 0275 [0295] 0281 0311 0213 ° 0222 0102 0079 [0132] [0166] 0388 0256 0417 0337 0294 0231 0189 [0142] 0062 0182 0242 0292 0170 0361 0330 [0289] 0182 0149 0213 0120 0144 0124 0340 [0281] 0188 0290 0285 0144 0277 0153 [0097] 0146 0136 0362 0366 0307 0231 0222 0132 [0274] 0103 0099 0149 0219 [0317] 0333 0285 [0275] 0196 0152 0567 0114 0140 0090 0182 0332 0287 0321 0259 0239 [0200] 0196 0109 0078 0139 0335 0355 0274 [0303 ] 0281 0213 0183 0267 0119 0098 | [0117] | [0217] | 0223 | 0202 | 0348 | 0256 | 0251 | 0370 |. 0182 | [0101] 0083 0115 0143 0193 0280 0294 0212 [0282] 0220 0242 0099 — re tv ww — we co BD CET ST NS EY ET re KH OONWHA aH can HorizontaL Component OF Macnetic Force. 237 TABLE XIII.—Continued. January. | February. | March. April. May. June. July. August. |September.| October. | November.| December. 0-0 0-0 0-0 0-0 0-0 0-0 00 00 0-0 00 0-0 0-0 0075 0101 0206 0166 [0251] 0263 0229 0206 0191 0130 0124 0089 [0089] 0110 0218 0144 0220 0187 0173 0346 0246 [0186] 0042 0039 0094 0083 0140 [0193] 0236 0297 [0561] 0439 0362 0165 0107 0066 0089 0210 0195 0165 0298 0227 0703 0371 [0245] 0183 0150 {0094} 0096 0164 0119 0235 0224 [0278] 1627 0341 0188 0211 0128 0104 0075 [0119] | [0161} 0257 0438 0340 0421 0241 0235 0202 [0107] 0074 0094 0092 0146 | esse. 0357 0331 0278 [0297] 0249 0188 0064 0192 0160 0119 (IE A) ods60c [0312] 0285 0231 0213 0334 0209 0099 0187 [0100] 0215 0230 0339 0308 0372 0371 0261 [0214] 0096 0095 0115 0240 [0231] 0252 0349 [0277] 0246 0139 0163 0077 0128 0086 0206 0266 0285 0221 0330 [0135] 01061 01191 01774 03116 03130 02899 03683 03139 02484 02227 01278 01223 From the means at the foot of Table XIII. it will be seen that the least mean is that for January, and the greatest that for July; the same results may be deduced from these quantities as from the ranges of the monthly means, thus— Jan. & Dee. Feb. & Nov. March & Oct. April & Sept. May & Aug. June & July. Ranges, 0°001141 0:001234 0:002000 0:002802 0:003134 0:003291 Differences, 0:000093 0:000766 0:000802 0:0003382 0:000155 The mean of the diurnal ranges is about three times as great for the summer months as for the winter months. If we take the differences of the monthly means of the diurnal ranges, and of the diurnal ranges of the monthly means, we shall have some measure of those irregularities which cause the two to differ, From the means for each couple of months we have the following differences :— Monthly means of the diurnal ranges, minus the diurnal ranges of the monthly means. Jan. & Dec. Feb. & Nov. March & Oct, April & Sept. May & Aug, June & July. 0:000514 0000507 0:000527 0:000558 0:000493 0-:000449 The difference is greater at the solstices than in the winter or summer, and is least in summer. TABLE XIV.—Diurnal Ranges of the Horizontal Component of Magnetic Force, with reference to the Moon’s Age and Declination for 1848. : Mean ean eos Mean After Mean eon 8! Diurnal oak $| Diurnal pe t Diurnal ae ‘ Diurnal 8° | Range 8& | Range Tat ia Range. ait Range. Day. 0:00 Day. 0:00 Day. 0:00 Day. 0:00 15 2525 0 2217 0 2931 14 2375 16 2232 1 1792 1 2672 15 2022 17 2445. 2 2015 2 3249 16 1960 18 2183 a" 1 | 2198 3 3050 17 2026 19 2082 4 PIB 4 2981 18 2166 20 1941 5 2037 5 2248 19 1858 21 2093 6 3207 6 2370 20 2168 22 1865 7 3227 if 2332 21 2146 23 2024 8 2756 8 2211 22 2057 24 1630 9 2337 9 2185 23 1925 25 1996 10 2303 10 1942 24 2124 26 2131 11 2405 il 2116 25 2088 PATE 2596 12 2430 12 2593 26 1962 28 3254 13 2422 one 2438 27 2437 29 2310 14 2321 Table XIV. was formed from Table XIII. in the manner indicated for the declination Table II. MAG. AND MET. oss. 1843. 30 Civil Day. © OPQ Ore CHO = 238 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. DIuRNAL RANGES OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE, WITH REFERENCE TO THE RELATIVE POSITIONS OF THE SUN, Moon, AND EARTH, AS INDICATED BY THE Moon’s AGE. The general aspect of the partial means, if we reject those for the 28th, 6th, and 7th days, which are much affected by disturbances, is that of a minimum near the time of new moon, and a maximum near the time of full moon. Means of Groups. 14 days to 16 as Full Moon, 0:002359 29 days to 1 aay, New Moon, 0:002106 17) BER 20 0:002163 2 Seen Bis 0:002122 2 ene. DA PTE: 0:001903 G law Ores 0-002882 20) ecre: PEE eye 0:002494 10 "Sees Lee 0:002390 DIURNAL RANGES OF THE HORIZONTAL COMPONENT OF MAGNETIC FORCE, WITH REFERENCE TO THE Moon’s DECLINATION. Means of Groups. af days to 1 aap Moon farthest North, 0:002680 | 13 days to 15 re Moon farthest South, 0-002278 Bee 5. O-002B82) (Gc. 0:002002 ; PE nae B53. 0:002304 | 20 ...... AI 0:002124 Seen Sis EZ tee G:002209 | 2a. secey. Paty meth 0-002025 These and the partial means indicate maazima about the periods of greatest north and south declinations, and minima when the declination is zero; the maximum at the period of greatest south declination is not well — marked. . VERTICAL COMPONENT OF MAGNETIC FORCE. TABLE XV.—Mean Values of the Variations of the Vertical Component of Magnetic Force (the whole Vertical Component being Unity), for each Civil Day as deduced from the Nine Daily Observations, for each Week, and for each Month in the year 1843. January. | February.| March. June. July. August. |September.) October. | November.| Decet ‘OL 0-01 0-01 0:01 0-01 0-01 0-01 0-01 0-01 [reese ] 6830 6621 5952 5837 5696 | eeeees [5251] 5475 7042 6896 6635 9905 (5953) 5688 | eesees 5134 5431 6997 6853 6606 5937 5879 5633 [eeeeee J 5203 5471 7078 6772 6538 [5919] 6013 5895 | weeeee 5182 5282 7020 [6834] 6686 | 5904 5902 Dif diwlauess vam 5037 [5345] 5886 | 5886 | [5620] | 5358 | 4980 | 5227 5931 | 6005 | 5574 | 5475 | 4931 | 5283 5935 | 5982 | 5549 | 5552 | [5160] | 5378 6024 | [5964] | 5351 5519 | 5341 | 5367 5989 | 5988 | 5683 | [5494] | 5327 | 5412 [6042] | 5934 | 5748 | 5552 | 5341 | 5345 6114 | 5992 | 5673 | 5462 | 5334 | [5386] 6133 |. 5862 | [5737] "| ~5404°4 5519 | soe 6058 | 5823 | 5789 | 5538 | 5548 | 5314 6034 | 5825 | 5800 | 5321 | [5536] | 5488 6033 | [5828] | 5732 | 5408 | 5554 | 5430 6196 | 5856 | 5717 | [5385] | 5750 | 5340 [6027] | 5829 | 5869 | 5262 | 5511 | 5351 6072 | 5775 | 5967 | 5344 | 5199 | [5304] a 7140 | 6652 | 6513 7012 | [6744] | [6569] 6997 | 6696 | 6587 7041 | 6737 | 6507 [6988] | 6746 | 6484 6927 | 6758 | 6452 6983 | 6747 | 6502 6969 | 6667 | 6524 6890 | [6701] | [6421] [51 VERTICAL COMPONENT OF MAGNETIC FORCE. 239 TABLE XV.—Continued. 5332 5207 Table XV. was formed in the following manner; the means of the balance micrometer readings, corrected for temperature, were first obtained for each civil day, and these means were reduced to parts of the vertical component by the following formula :— January 1—August 22. f= mn x 0:000009 August 25—August 31. f= (nm — 160) 0:000009 September 6—November 11. f= (m — 222) 0:000009 November 14—December 31. f = (# — 260) 0:000009 Where f is the quantity in the previous Table and m the mean micrometer reading corrected for tempera- ture. The balance needle was removed three times in 1843 for the purpose of determining its temperature correc- tion, namely, on August 23 and 24, on September 1, 2, 3, 4, and 5, and on November 13. These removals neces- sarily broke the series of observations, but it is conceived that the different portions after August have been reduced to nearly the values which they would have had, had there been no removal, by the following methods :— 1st, To connect the observations after November 138, with those immediately before it,— Mean of the micrometer readings, week, Oct. 16— oi, = 8503 I ak coach one whign ountclne cave Sapiceias edness Oct, 23— Don = O29'6 PE een war daner sates eeeuacmes cre Oct. 30—Nov. 4. = 829-7 : _f— 06 eh ee ee eth, Nov. 6— ie ae Changeim 14 days— { =a5-6 aides Meetdvers | A secondary maximum about 32 20" p.m. The minimum about 5? p.m. Autumn, The maximum between 95 p.m. and 5" a.m. The minimum about 1" 40™ p.m. Winter The maximum after 98 pm. The minimum before 5® a.m. > ) A maximum at 95 40™ 4m. | A maximum at 95 40™ a.m. A minimum at 1° 40™ p.m. The diurnal variation for the year 1843 gives— The maximum between 9 p.m. and 5 a.m. The minimum at 3 20™ p.m. The division, then, of the total pressure of the atmosphere into two paris, namely, the dry air and aqueous vapour, indicates only a single maximum and minimum in the diurnal curve for the year (as has been shewn by M. Dove and Colonel Sazinz). The minimum pressure of dry air takes place nearly two hours after the maximum temperature. We have still the double maximum and minimum in the Winter months. Why are both exhibited in the pressure of the dry air in Winter? We have seén that the diurnal range of the aqueous vapour follows, to some extent, the diurnal range of temperature, and that it is greater in Summer than in Winter. We have also seen that, for the year 1843, the diurnal variation of the total atmospheric pressure has a greater range in Winter than in Summer. It seems curious that the diurnal range of total pressure should diminish when the ranges of its two components increase, and that, when the diurnal ranges of the two components diminish, the diurnal range of the compound pressure should increase. There is no difficulty in seeing, even if the theory be at fault, or if the pressure of aqueous vapour be inaccurately determined, that the comparatively great diurnal range of aqueous vapour pressure for the summer months, and for the year, will swamp the smaller range of the total pressure, and produce a curve for the dry air, with a single maximum and minimum, inverse to that for the pressure of aqueous vapour. ‘The fact that, when the diurnal range of the aqueous vapour pressure is least, namely, in Winter, the diurnal range of the total pressure is greatest, and the double maximum and minimum most distinctly marked both for the assumed dry air and total pres- sures, leave this mode of resolution with its original difficulties. It was pointed out, Table XI., that a secondary maximum and minimum of the pressure of aqueous vapour occurred in several months about 1, 35, and 5" p.m. No such periods were observed for the humidity or total atmospheric pressure. Of course, then, in assuming the total pressure to be composed of the pressures of dry air and of aqueous vapour (as calculated), we may expect to find the dry air accommodating itself to the calculated vapour pressure. Accordingly, as has been noticed above, secondary minima and maxima of dry air occur at the same times as the secondary maxima and minima of aqueous vapour. This does not seem very probable. ; PRESSURE OF THE WIND. 285 TABLE XXII.—Extremes of the Mean Daily Pressures of Dry Air, with their Ranges and Means. Monthly Mean Highest. Ri : : ne ae Mean minus Mean. in in. i 5 i in. in. in. January 29-875 27-820 2-055 28-847 + 0-297 February 29-830 28-748 | 1-082 29-289 + 0-030 March 29-962 28-764 1-198 29-364 +0-079 April 29-612 28-704 0-908 29-158 + 0-079 May 29-920 28-813 1-107 29-366 — 0-027 June 29-687 28-504 1-183 29-095 + 0-205 July 29-648 28-838 0-810 29-243 + 0-005 August 3 29-611 28-716 0-895 29-163 + 0-082 September 29-943 29-082 0-861 29-512 + 0-042 October 29-928 28-322 1-606 29-125 +0-031 November 29-883 28-724 1-159 29.303 — 0-067 December 29-902 29-277 0-625 29-589 + 0-096 This Table has been formed from Table XX. The highest mean daily pressure of dry air occurred March 84 = 29:962 dah oe a Fae cuit 1) coves Sameer peel sdetdee thir. Jan. 13¢ = 27-820 } a eae a This mean is 0°433 in. less than the mean for the year. The mean of the 12 monthly maxima and minima of the daily means is 0:071 in. less than the mean for the year. The greatest monthly range of the daily means occurred January 13—19 = 2-055. pRnecleastaay. ts: asteueceseh Paa-cthe ne serttihsae EE ceed December =10:625. The ranges and means give nearly the same results as have been obtained for the total atmospheric pressure. TABLE XXIIT.—Daily, Weekly, and Monthly Means of the Pressure of Wind in Pounds on the Square Foot of Surface, deduced from the greatest Pressures occurring between the Two Hourly Observations. MAG. AND MET. oss. 1848. 4c 286 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXIII.—Continued. Jan. Feb. March. | April. May. June. July. Aug. Sept. Oct. Nov. Dec. Ib. lb. Ib. Ib. Ib. lb. lb. | lb. Ib. lb, lb. lb. 17 135 | 0-27 | 1-72 | 0-02 | 1-56 | 0-28 | 0-33 | 0-05 | [0-44]| 1-40 | 1-77 | [1-25] 18 1-52 | 0-04. | .0.51..|_.0-89. | .0.61-|_[0.43].|. 0-87 | 0-03. | 1-02.) 0-37 | 1-777) 90.08 19 || 0-99 | [0-68]} [0-69]| 0-52 | 0-62 | 0-56 | 0-37 | 0.08 | 0-04 | 0-10 | [1-52]| 0-17 2:10 | 0-32 | 0-18] 1-29] 0-10 | 0-66 | [0-42]| 0-55 | 0-71 | 1-13 | 0-46 21 0-10 | 1:06 | 0-60 | 0-21 | [0-66]! 0-84 | 0-65 | 061 | 0-52 | 0-57 | 0-89 | 0.07 22 || [1-14]] 0-57 | 0-54 | 0-11 | 0-62 | 0-10 | 0-12 | 0-91 | 0-02 | [1-01}| 3-32 | 3-07 23 1-68 | 1-04 | 0-64 | [0-78]| 0-45 | 0-35 | [0-39]) 0-86 | 0-05 | 2:48 | 013 | 2-65 24 1-83 | 0-27 | 0-67 | 1-25 | 0-38 | 0-19 | 0-12 | 0-09 | [0-29]} 1-78 | 0-00 | [1-30] 25 1-92 | 0-02 | 1-22 | 237 | 0:56 | [0:59]| 0-00 | 063 | 0.56 | 0-45 | 0.00 | 0-74 26 1-42 | [0-71] | [0-81]| 0-54 | 0-97 | 0-35 | 0-80 27 3-39 | 1-44 | 1-69 28 5-47 | 0-95 | 0-60 | 0-90 | [0-50]| 1-69 | 0.22 | 0.95 | 0.97 | 203 | 1-52 | 0-57 29 [4:16] 0-06 0-27 0-57 0:39 0-62 0-51 0-28 | [0-49] } 2-82 0-98 30 6-60 0-18 | [0-44]} 0-17 0-87 | [0-73]: 0-04 0-63 0-10 0-61 2-26 31 3:84 1-80 0:38 0-24 | 0-03 0-14 [0-80] Mean 2-02 1-44 0:57 0-88 0-69 0-72 0-63 0-40 0-32 0-84 1-00 1-40 The means in this Table have been obtained from the daily observations by the following formula :—The observation at 18" being that of the maximum pressure of wind which has occurred from 10" of the previous evening (excepting Monday mornings, when it is the maximum pressure which has occurred from about noon of the previous day), the observation at 18" may be used as the maximum pressure belonging to some one couple of hours in the previous morning (excepting on Mondays), M being the daily means of ‘the maxima in the previous Table, S the sum of the nine daily observations, 10, the maximum observed at the 10" preceding the 18" observation, 10, the maximum observed at the 10" succeeding the 18" observation, then S +10, + 20 + 10, 12 For Mondays the means have been obtained by the formula So + 3, xo20).4 10. 2 Al = vie where 9’ is the sum of the eight observations from 20" till 10"; the observation at 18 obviously could not be used for the daily means on Mondays. The means of the four daily observations were taken for the daily means in the first week of January. Annual Variation of the Means of the Maximum Pressures of the Wind.—The greatest monthly mean is that for January, being 2°02 lb., and the least is that for September, being 0°32 1b. The pressure diminishes from January till March, when there is a minimum, the means for the four months following being greater ; it increases from September to December. The following are the means for the three groups of seasons, namely, The mean meteorological seasons, for which June, July, and August constitute summer. The meteorological seasons for 1843, for which July, August, and September constitute summer. The astronomical seasons, for which May, June, and July constitute summer. Seasons. Mean Meteorological. Meteorological for 1843. Astronomical. lb. Ib. lb. Spring, : ' 0°71 0-76 0-96 Summer, : : 0°58 0°45 0°68 Autumn, ; : 0:72 1:08 0:52 Winter, MN iach 1:34 1-47 Range of Means, . 1:04 0-89 0°95 The pressure is greatest in the coldest quarter and least in the warmest quarter of 1843. The mean for the year of the maximum pressures = 0-91 Ib. PRESSURE OF THE WIND. 287 TABLE XXIV.—Daily, Weekly, and Monthly Means of the Pressure of Wind in Pounds on the Square Foot of Surface, deduced from the greatest Pressures observed within 10™ az the hours of Observation. March. OOD oO & tO The means in this Table have been obtained from the nine observations by the formula already given, Table I., for the temperature of the air. The daily means in the first week of January are the means of the four daily observations. Annual Variation of the Means of the Maximum Pressures of Wind at the Hours of Observation. Naming these pressures the mean pressures, for which they may be taken approximately, we find the same law of varia- tion as for the maximum pressures. ‘The mean pressure is greatest for January, the mean being 1:29 lb.; it diminishes till March, in which there is a minimum, the means for the four months following being greater ; the least pressures occur in August and September, the mean for the latter bemg 0°16 1b.; the pressure then increases till December. The following are the means for the three groups of seasons :— Seasons. Mean Meteorological. Meteorological for 1843. Astronomical. 1b. lb. lb. Spring, sl, SEAS 0:43 0-56 Summer, g : 0°31 ” 0°23 0:38 Autumn, : : 0°35 0°54 0°25 Winter, : : 0:96 0-83 0.83 Range of Means, . 0°65 0°60 0-58 288 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. The mean pressure is greatest for the mean meteorological winter, and least for the warmest quarter of 1843. The mean pressure for the year 1843 = 0-50 lb. The monthly means of the maaimum pressures, Table XXIII., bear to the monthly means of the mean pressures, Table XXIV., the following ratios :— Jan. Feb. March. April. May. June. July. August. Sept. Oct. Nov. Dec. 1:57 1:66 1:78 1:80 1:77 1:80 1°80 2°35 2:00 2:00 2:08 1-98 The mean for the year of the maaimum pressures is 1°82 times greater than the mean for the year of the mean pressures. TABLE XXV.—Maximum Pressure of Wind in each Civil Day in 1843, with the Monthly Means. Civil Day. COnNorrwy- Pat Oils COUR ORCS) ie DBL TWATNOHDHANDAROO’ Pua ie SURO ans wankhorpwn SS Ob ee OVYNSTUHBSHW RHE ADWY ; Dey o If the maximum pressure observed at 18" on Monday morning was greater than the maximum observed about noon on Sunday, the former was taken as the maximum for Sunday. The monthly means of the maximum pressure of wind in each day follow nearly the same law as the monthly means, Tables XXIII. and XXIV. YW PRESSURE OF THE WIND. 289 TABLE XXVI.—Means of the Maximum Pressures of Wind between the Hours of Observation for each Month and Quarter of 1843. Period. + | 208—22h, . h 1b. January : : 2-07 February : . 1-61 March : 0-43 April : 1.04 May . . 0-69 June . : 0:72 July August September October November December Spring Summer Autumn Winter The Year The observations in the first week of January were not made use of in obtaining the hourly means for that month in Tables XXVI. and XXVII. No observations having been made at 18" in the second week, a cor- rection was applied to the mean for that hour of —0-11 in Table XXVI., and of —0-14 in Table XXVIL., obtained from Tables XXIII. and XXIV. as follows :— {Mean pressure, January 9—31 = 2-21 minus mean pressure, January 16—31 = 2°32} = — 0-11. {Mean pressure, January 9—31 = 1:48 minus mean pressure, January 16—31 = 1:57} = — 0-14. The means for January in Tables XXVI. and XXVII. are further corrected by —0:15 and ~— 6-10 re- spectively, in order to render the means for that month equal to those obtained Tables XXIII. and XXIV. Diurnal Variation of the Maaimum Pressure of Wind.—The means for the months of January, February, and December are very irregular, presenting two or three maxima and two or three minima within the nine daily observations; in the other months only one maximum is evident, occurring between 11 a.m. and 2 p.m. The minimum occurs after 9 p.m. and before 7 a.m. The following are the interpolated hours for the maximum for the mean meteorological and astronomical seasons, obtained on the assumption that the means correspond to the middle of the interval to which they belong ; for example, that the mean of the maximum pressures occur- ring betwixt 0 and 2" correspond to 12 :—* Seasons. Mean Meteorological. Astronomical, Spring, : ; 12520" pam 15 40™ p.m, Makerstoun mean time. Summer, . ‘ 12 10™ p.m. OEM Wa tao lee Autumn, . oy LO pees HE OUR AGM dete ae fica aee coe Winter, 2 ; 0» 10™ p.m. 11 30™ a.m. The maximum pressures occur latest in the day in Spring, and earliest in Autumn and Winter, A secondary minimum and maximum occur in Winter of the meteorological group about 2 p.m. and 4" p.m, respectively, and in Winter of the astronomical group about 4" p.m, and 6" p.m, respectively. The maximum in the diurnal variation for the year occurs at 0° 30™ p.m. ‘The value of the maximum pressure increases regularly from 8> 10™ a.m. till 0" 30™ p.m. at the rate of 0-08 1b. per hour, and it diminishes from 0" 30™ p.m. till 8° 10™ at the same rate. * This assumption is obviously inexact, as the means of the maximum pressures, while the pressure is increasing, will most pro- bably belong to nearly the termination of the periods in which they occur, but since, while the pressure is diminishing, they will probably correspond to nearly the commencement of the periods, the interpolated time of maximum will not be affected by the error of the hypothesis. MAG, AND MET. oss. 1848. 4D 290 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXVII.—Means of the Maximum Pressures of Wind within 10™ a¢ the Hours of Observation for each Month and Quarter of 1843. Period. i) ee 208. 22h, 04. 2h, 4h, 6, gh, 104, Mean. || Range. lb. lb. lb. lb. 1b. lb. lb Tb. Ib. 1b. 1b. January 1-23 1-33 1-62 1-77 1-40 1-15 1-16 1-07 1-10 1-28 0-70 February 0-87 | 0-80 0:75 1-10 1-15 1-13 0-86 0-62 | 0-70 0-86 0-53 March | 0:29 | 0-18 0-31 0-50 0-60 0-61 0-22 |} 0-14 0-21 0-32 0-47 April | 0-37 0-46 0-63 0-85 0-89 0-58 | 0-63 0-24 | 0-26 0-49 0-65 May | 0-20 | 0-33 0:44 | 0-56 | 0-71 0-65 0-70 | 0-36 0-20 0-40 0-51 June || 0-24 0-32 0-50 | 0-62 0-62 | 0-61 0-50 | 0-39 | 0-30 0-41 0-38 July 0-25 0-28 0-48 | 0-39 0-56 0-67 0-41 0-32 | 0-15 0-34 | 0-52 August || 0-05 0-07 0-27 0-33 0-34 0-31 0-33 0-16 | 0-06 0-17 0-29 September 0-06 0-07 0:27 0-40 0-44 | 0-32 0-09 0-03 0:07 0-16 0-41 October 0:48 0-35 0-44 | 0-62 0-68 0-48 0-33 0-24. 0-23 0-41 0-45 November 0-57 | 0-52 | 0-40 0-82 0-57 0:50 | 0:33 0-21 0-37 0-47 0-61 December 0-75 0-71 0:78 0-58 0-95 0-62 0-67 0-98 | 0-55 0-71 0-43 Spring 0-29 | 0-32 0-46 0-64 0-73 0-61 0-52 0-25 0-22 0-40 0-51 Summer 0-18 0-22 | 0-42 0-45 0-51 0-53 0-41 0-29 0-17 0-31 0-36 Autumn 0-37 | 0-31 0-36 0-61 0-56 0-43 0-25 0-16 0-22 0-35 0-45 Winter 0-95 | 0-95 1-05 1-15 1-17 0-97 0:90 | 0-89 | 0-79 0-95 0-38 The Year 0-44 0-45 0:57 0-71 0-74. 0-63 0-52 | 0-39 0-35 0:50 0:39 Diurnal Variation of the Mean Pressures of the Wind.—The means for the month of December are ir- regular, presenting three maxima and three minima within the nine observations ; February, March, October, and November indicate two maxima and two minima in the twenty-four hours. The maximum pressure occurs, in general, about 1" p.m. The following are the periods of the maxima for the mean meteorological and astronomical seasons :— Seasons. Mean Meteorological. Astronomical, Spring, ; : OF 50™ p.m. 0» 30™ p.m, Makerstoun mean time. Summer, . : Qh 50™ pM. OS Bein cre nat, eee nee ee Autumn, . . 11 407 aM. ite (es | valli Ret Je dedi Waseda Winter, ; : 0» 50™ p.m. PO RG a, Pees oe coe eee The periods for the astronomical group are the most distinct and regular ; from these the maximum pres- sure of wind occurs latest in Summer, about an hour after the maximum temperature, and earliest in Winter, about an hour before the maximum temperature. In Spring and Autumn the maximum pressures occur about an hour before the maximum temperatures. In Autumn of the mean meteorological group a minimum of pressure occurs at 75 10™ a.m. and another at 7° 10™ p.m, In Spring of the astronomical group minima occur at 7° 10™ a.m. and 7? 10™ p.m. Tay A pa Oi este emineie ees ae a minimum occurs at 75 10™ a.m. Min) Water 2" eerie anc eicesateiine ccs pe = a minimum occurs at 5" 10™ p.m., and a maximum at 75 10™ p.m. In the means for the year the maximum pressure occurs at 0> 25™ p.m., or an hour before the maximum temperature of the air. The pressure increases regularly from 7" 10™ a.m. till 0? 25" p.m., at the rate of — 0-06 lb., and it diminishes from 0? 25™ till 7" 10™ at the same rate. The forenoon and afternoon branches of the mean diurnal curve are therefore straight lines, forming the same angle with the ordinates. PRESSURE OF THE WIND. 291 TABLE XXVIII.—Maximum Pressures of Wind, with the Maxima of the Daily Means, Tables XXIV. and XXV., and corresponding Directions of the Wind for each Month in 1843. Month. January February March April July August September October November December 11 21 20—22 O— 2 4— 6 0O— 2 20—22 10—24 8—10 0—18 10—18 22—24 10—18 Maximum Pressure. Max. of Daily Means of Mac. Pressures. d. 1b. Pt. 30 | 6-60 W. N by W 4 | 5.97 | N by W. WNW. | 31 | 1-80 | SWbyS. WNW 14 | 241 | WdyS. S. Be na.ay SSW. S by W 8 | 257 SSW. NNE. 3 | 3-20 SW. Wsw 5 | 1:35 |SW by W. W by S. || 18 | 1-02 SW. N by E 12 | 342 | NNW NW. 22 | 3.32 Ww. Sw. 5 | 3-96 SW. Max. of Daily Means of Mean Pressures. d. 1b. | Pt. 30 | 5-00 W. 4 | 454 | Nby W. 31 1:93 | SW byS. 25 | 1-92 SW. 5° | 151 SSW. 8 | i-71 SSW. 3.1 2-31 Sw. 5 | 0:56 |SW by W. 28 | 0-52 NNW. 12. | 2-02 NNW. 29 | E75 WNW. 5 | 279 Sw. The greatest pressure of the wind in the year 1843 occurred February 44 20—22", being 12-8 Ib., the wind blowing from N. by W. The greatest mean daily pressure occurred January 304, the wind blowing from W. ; being, for the maxima between the hours of observation, 6-6 lb., and for the maxima az the hours of observation (or mean), 5:0 Ib. The maximum pressure of the wind in three months occurs between 1" p.m. and 9" p.m.; the greater number of the monthly maxima seem to occur between midnight and noon. The monthly maxima occurred on five months while the wind was blowing in the quadrant from N. to W. ; on four months while the wind was blowing from between §. and W.; on one month while blowing from S. ; and on two months while blowing from between N. and E. All the monthly maxima of the daily means occurred with winds from between NW. by W., and SSW. 292 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXIX.—Number of times which the Wind blew from each Point of the Compass at the together with the swms of the Pres- January. February. March. April. | May. | June. | Wind blowing from : Times. | Press. || Times. | Press. || Times.| Press. || Times.| Press. || Times. | Press. || Times.| Press. 1b. ; 1b. lb. Ib. Ib. 1b. N 5 8-2 9 3-9 3 3-2 7 5-8 N by E. er Ae 10 | 13-1 2 0-4 5 3-4 NNE 11 6-7 4 2-6 2 0-6 11 4-9 ! NE by N. as A 25 | 13-0 3 0-6 oe vee 11 5-4 51 .| 18-9 | NE. rr it 22 | 16-3 4) eA 6 | 47 | 38 | 200 | 27 | 125 NE by E. 8 4.4 3 1-2 1 0-5 20 | 12-4 13 5.4 ENE. a ce 12 | 13-5 120° onaF 2 0-6 24 | 16.9 14 4-7 . E by N. 2, | Ba || Hb. | wt 1 |, 0.2.]) 12°) ~g.9 . E. 4 1-1 2 0:7 6 4.3 1 0-1 E by S. 1 0-8 1 0-2 5 6-2 ESE. os 1 0-5 1 0-1 SE by E SE 3 | 65 i) oe 3 1 £6 Ne aes Sepa. Vila pa Neen 3.4). 402 t | 03 SSE. 5 3-2 3 4-5 S by E. 8 7-3 6 3-3 8 8-8 3 1-5 S. , eh Hine ct 4 2.2 11 | 16-6 6 9-3 2 1-3 S by W. 3 2.5 2 0-7 2 2.0 5 6-6 SSW. 7 6-6 2 0-4 7 4:7 8 5-8 1 0-1 | SW by S. 21 | 25-4 2 5-4 7 ©) 805 1 0-5 12 7-0 4 4-3 Sw. 96 | 51-1 13 | 26-2 12 9-6 19 | 11-9 a 4.2 1 0-5 SW by W. | 44 | 54.3 5a» | 1d-0 14 8-7 10 9-3 5 3-4 3 2-2 Wsw. it~ trig a a Being 9 | 68 6 Bess ge ihe W by S. 14 | 12-6 9 | 14.2 1 0-2 6 5-3 Ww. 15 | 33-9 vee ees 2 0-4 6 7:7 10 9-0 W by N. 1 g.2 | 1 4-8 1 1-2 = “oe 1 0-2 WNw. 4 | 183 4 1-6 3 2.4 4 5-2 1 0-6 2 2-4 NW by W 5 | 21-9 1 1-5 & 2-7 NW. 8 | 18-8 6 7-4 3 2.2 NW by N. 8 | 14-6 2 7-0 6 3-5 2 3-0 NNW 2 1-0 1h 14.5 1 0-2 5 3.1 3 1-1 N by W. 3 2.8 15 | 41-9 6 1-5 5 3-8 2 1-8 | PRESSURE AND DIRECTION OF THE WIND. 293 Observation Hours, with a Pressure of one-tenth of a pound or upwards on a square foot of surface, sures for each Month in 1843. August. Times. | Press. Noreen oer bws wow w 0-2 1 0-1 1 0-1 0:5 5 1-0 5) 3-6 13 8:8 0-7 5 3.7, 6-6 11 5-2 11-1 17 8:8 41-0 24 MAG, AND MET. obs, 1843. Times. a wow © WwW & wO A bo po KF = ww KH ~O — = tS oN Wanner K&B OKRA OD September. October. Press. || Times. 1b. Ib 4-0 3 0-5 4 0-1 5 4-2 0-5 1 2-0 6 0-7 1-1 0-1 0-3 0-4 0-2 0.4 2-0 2 1-2 1 1-2 2 2-5 2-3 4 1-0 1a. 6-3 32 1-6 16 7:3 1-2 17 5:9 4 8 5 5 9 5 3 8 3 Press. 3-4 4.4 November. Times. | Press. 1b. 1 0-5 D4 0:3 2 0-4 1 0-1 1 1-4 3 0-4 32 33-0 bs) 1-8 31 19-8 wor wo © YH FH HH OO fF December. Times. | Press. Ib. 3 0-6 25 17-9 19 20-0 90 | 91-1 Wind blowing from 294 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. In forming the sums for January in Table XXIX., the following quantities, estimated from the four daily observations, were used as belonging to the first week in that month :— Wind. Times. Sums of Pressure. Wind. Times. Sums of Pressure. lb. Ib. NNW. 1 0-2 W by 8. 2 3:0 NW by W. 4 2-4 SW by W. 15 13°4 NW. i) 4:3 SSW. 5) 3:2 WwW. 9 6:2 Annual Variation of the number of times which the Wind blew, as deduced from the observations made at 9 two hourly intervals. The following are the sums of the times which the wind blew at the observation hours for each month, as obtained from Table XXIX. :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 177 149 127 135 170 187 161 113 113 159 126 173 The number of times which the wind blows is a maximum in January, the number diminishes to March when it is a minimum, it increases to June when it is a maximum, diminishes again to August and Septem- ber when it is a minimum, and increases till December when the number is nearly the same as in January. The only exception to the regularity of this increase and diminution is in November, in which month the num- ber is less than in October. In the year 1848 the wind blew most frequently at the solstices and most seldom at the equinoxes. The range of the variation of the numbers is 74, or 2 of the greatest number, 187, that for June. Annual Variation of the number of points of the compass in which the Wind blew.—The following are the number of points of the compass in which the wind blew for each month :-— Jan. Feb. March. _ April. May. June. July. Aug. Sept. Oct. Nov. Dec. 17 17 24 -27 20 25 24 21 29 24 20 9 The wind, therefore, seems to be least variable at the Winter solstice, and more variable at the equinoxes than at the summer solstice. Annual Variation of the sums of the Pressure of the Wind.—This, of course, is the same as has been already obtained, Table XXIV., for the means of the pressures ; or the maximum near the winter solstice, minima at the equinoxes, and a secondary maximum near the summer solstice. The sums, as obtained from Table XXIX., are as follow :-— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Ib, Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. 2616 191-4 829 1229 1116 1064 914 522 453 1003 61116 #1716 Annual Variation of the Mean Pressure of the Wind when blowing.—The means, Table XXIV., are the mean pressures throughout the 24 hours. The following means are obtained by dividing the sums of the pressures by the number of times which the wind blew :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Tb. Ib. Ib. Ib. Ib. Ib. Ib. ib. Ib. Ib. Ib. Ib. 1:48 1:28 0°65 0-91 0-66 0:57 0°57 0:46 0:41 0°63 0:89 0°99 The mean pressure of the wind when blowing is a maximum in January and December ; it is a mmimum in September. There is also a minimum in March, but it is not sufficiently marked to produce a distinct maxi- mum near the summer solstice, as shewn by the sums of the pressures. From this the wind seems to blow : with the greatest force near the coldest, and with the least force near the hottest period of the year. The range of the monthly means of the pressure of wind while blowing is 1:07 Ib. le a a gi PRESSURE AND DIRECTION OF THE WIND. 295 TABLE XXX.—Sums of the Pressures of Wind in Table XXIX., resolved for each Month and Quarter into the Four Cardinal Points of the Compass, together with the Value and Direction of the Resultant. Resolved Sums in Resultant. Period. Means. Directions. a Ib. 2. January . 1-23 Su lse February 0-62 8 W. March : 0-07 31 E. April . 0-43 23 S. May 0-29 4N. June 0-16 4 E. July . : 0-42 37 S. August . . 0-38 26 W. September . 0-13 24 N. October 0-27 158. November . 0-61 24 S. December : : 0-93 40 S. ease adra4unrguuas Mean Met. Qrs. Spring Summer Autumn Winter BeBicB ae Astron. Qrs. Spring Summer Autumn Winter The Year The mean resultants are obtained from the sum resultants in dividing the latter by the numbers of times which the wind blew. Annual Variation of the Resultant Pressure of the Wind.—The resultant sums and means of pressures are the maximum in January and the minimum in March, a secondary minimum occurs in June, secondary maxima occurring in the months before and after it, and a minimum occurs in September, differing little in value from that for March; the resultant increases from thence till December. The quarterly periods for the astronomical group seem most regular. The resultant is nearly zero for the astronomical summer, it has about equal values in Spring and Autumn, and it is greatest in Winter. The direction of the Resultant is between S. and W. seven months of the year, namely, in January, April, July, August, October, November, and December; it is between N. and W. two months, namely, in February and September ; it is between N. and E. two months, namely, in May and June; and it is between S. and E. one month, namely, March. The direction of the resultant wind for 1843 is W. 18° S. 296 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXXI.—Number of times which the Wind blew from each Point of the Compass at foot of surface, together with 18, 204, 22h, Ob, 2h, 4h, Wind blowing from Times. | Press. || Times.| Press. || Times.| Press. || Times.| Press. || Times.| Press. || Times. | Press. 1b Ib Ib. Tb 1b N 1-1 2-2 0:5 6 4-7 U 4-8 7 N by E. 3 5:4 2-6 3:2 3 4-4 0-4 NNE 2 0:3 2:0 2-0 2-8 4.8 6 NE by N. 12 5-4 12 3:8 14 4-1 10 4:3 11 4-7 12 NE. 9. | BO te Be (EO de WO. In ee td 76. | ee Secoh lle aah NE by E. 1 1-0 7 3:2 3 1-9 9 4-1 9 5:2 12 ENE 5 4:5 5 3-2 8 5:9 9 6-0 16 12-2 10 E by N. 2 0-3 2 2-4 4 4:7 4 3-0 4 3-4 5 E. 3 3-4 1 0-2 2 1-2 2 0-9 2 1-1 E by S. a0 1 0-8 2 2-7 2°5 ESE. 1 0-5 2 SE by E. 1 0:3 SE 2 3-2 2 3-2 1 0-1 1 0:5 2 1-3 1 SE by S. 3 3-5 I 0:8 2 SSE. 2 2:6 1 0-2 2 1:3 4 1-5 3 S by E. 1 0-4 3 2-1 vi 3-7 7 7:3 3 4-2 3 8. 3 5:8 5 5:0 3 3:4 4 4-4 6 8-1 5 S by W. 1 1-4 4 2-0 3 2-9 3 2-0 6 5-7 a SSW. 8 11-7 9 4-9 16 9-2 16 10-9 16 9-5 13 SW by S. 8 9:8 11 8-1 10 7-9 16 16-6 20 17-3 15 SW. 28 31-4 28 23-7 32 33-9 42 34-7 39 42-0 41 SW by W. 11 7:8 12 12-0 17 12-6 12 15-4 11 15-8 16 WSW. 9 9-4 12 6-2 11 7-9 12 4-8 12 8-8 12 W by 8. 4 1:5 7 4.1 8 6-8 8 7:8 8 7:3 4 W. 6 2-3 Uf 12-3 8 9-3 7 16-4 9 14-2 11 W by N. 4 9-4 2 6-4 5 8-6 4 WNW. 3 10-2 2 4-3 3 2-7 2 2-3 5 2-4 7 NW by W 3 6-4 1 |. 6-0 2 0-5 4 2-6: 3 3°3 3 NW 2 1-4 5 2-1 6 4-6 1l 15-7 3 4-2 1 NW by N 1 6-8 2 1-0 4 a7 3 |) 64 4 6-4 4 NNW 4 1:5 4 1-2 4 2-4 6 2-4 7 4:5 6 N by W. 3 | 20 4 |106 || 10 | 11-8 9 | 12-5 g | 12-2 6 PRESSURE OF THE WIND. 297 each Observation Hour, with a Pressure of one-tenth of a pound or upwards upon a square the swms of the Pressures. 64, Times. 13 21 ma Woo st —_ nouoore FP —|§ DP OHO NW OH MAG. AND MET. oss. 1843. Press. Ib. 6:8 1:8 0-6 6-1 9-2 2-7 68 2:8 0-9 1:2 1-5 0-1 0.2 1-7 6-2 0-6 13-6 7-0 32:3 13-3 5-3 1-0 5-7 3-3 8-1 | 0-2 11-0 0-8 3-1 1-4 coh Times. I Bw eH PON bo wo Dd — wo WK Press. 0-7 1-6 1:7 1-2 3-2 10-8 34-7 8:0 2:8 2-4 7-0 0-4 4-2 6-1 0:8 4:3 1-4 10%. Times. er PF HO OO HA WHO = wonre oan o wv LN] Press. Ib. 0:2 1-9 2-1 3-7 3:5 0:8 1:3 2:8 0-1 11-4 27-4 3:8 4-0 5:9 2-3 0-2 3-5 5:6 0:7 6:2 1-9 9 Observations. Times. Press. 1b. 39 28-4 25 25-4 46 22-0 100 40:3 lz 59:8 55 26:5 75 49-6 34 26-9 18 11-2 7 7:2 4. 0:9 0:3 13 10-0 7 4:8 20 11-0 34 27-4 38 39-5 28 20-9 109 82-1 118 101-0 314 293-0 108 99:3 96 57:6 49 39-9 67 85-4 22 30:8 30 45-0 24 30-8 34 45-6 22 32-0 47 29-0 48 65-8 12 Observations. Times. | Press. Ib. 43 30:3 32 36:3 56 25:6 131 53-9 142 69-5 59 29-2 88 58-3 43 31-5 23 16-3 % 7-2 5 1-0 1 0:3 16 14:8 / 4:8 26 19-9 42 34:3 46 50:3 30 23-0 137 111-2 152 132-8 403 381-2 149 131-6 122 W77 66 54:0 95 100-0 23 31-1 38 65-5 33 48:8 42 52:0 33 45-9 62 40:7 57 71-7 Mean Pressure. Wind blowing from 298 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. After the number of the times which the wind blew, and the sums of the pressures for the observation hours, the sums of the times blowing and pressures for all the 9 observations are given, and next the sums of the times blowing and pressures for 12 observations, three times the mean of the sums for 18> and 10" being taken as the sums for the three observations wanting to complete the day. The following quantities have also been made use of in forming the sums for 12 observations :— Direction. Times. Sums of Pressures. Direction. Times. Sums of Pressures. lb. Ib. NNW. 1 0-2 W by S. 2 3-0 NW by N. 6 2-7 SW by W. 18 14:9 NW. 5 4:3 SSW. 5 3:2 W. LZ rit These being estimated for the first week of January, and for the observation at 18", omitted in the second week. Diurnal Variation of the number of the times which the Wind blew in 1843.—The following are the sums of the number of times which the wind blew, at each observation hour, with a pressure of one-tenth of a pound or upwards on a square foot of surface, as obtained from Table XXXI. :— 55 10”, POs 95 10™, 115 107 am. 15 10™ pm. 34 10™, 54 10m, 7h 10m, 9 10™, 138 166 205 233 256 242 212 171 126 Differences, 28 39 28 23 14 30 41 45 The number of times which the wind blew increased from 5 10™ a.m. till 1" 30™ p.M., the interpolated period of maximum, and diminished from 1" 30™ p.m. till 9" 10™ pm. The number increases most rapidly about 8" a.m., and diminishes most rapidly about 8" p.m. The wind, therefore, blew most frequently exactly at the time of the maximum temperature of the air. Diurnal Variation of the number of Points of the Compass in which the Wind blew.—The numbers of the points of the compass in which the wind blew at the observation hours, are— 5» 10m, 7» 10m, 9210™, = 11»10™a.M. 1210™ p.m. 3h 10m. 5h 10m. 7 10, 9h 10m, 27 27 30 29 31 30 30 26 25 The wind, therefore, seems to blow less steadily from 9 a.m. till 5 p.m. than before the former and after the latter of these hours. Diurnal Variation of the Sums of Pressures of the Wind.—This, of course, is the same as that of the means, Table XXVII., or a maximum about 25™ after Noon. The sums are as follow :— 5 10, 7 10m, 9810™, 112 10™ a.m. 1510™ p.m. 3 10m, 5b 10m, 7» 10m, 9» 10™, Tb. Ib. lb. tb. lb. lb. Ib. lb. lb. 139°5 133°5 170°4 211°5 224-0 192-1 15671 118-7 103°8 Diurnal Variation of the Mean Pressure of the Wind while blowing.—This is obtained by dividing the sums of the pressures by the number of times which the wind blew, and is as follows :— 5» 10™, 74 10m, 9b 10, 11h 10™ a.m. 11 10™ P.M. 3> 10™, 55 10™, 74 10m, 9b 10™, Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. Ib. 1:01 0:80 0:83 0:91 0:88 - 0-79 0-74 0°69 0:82. The wind, while blowing, was a minimum about 7" 40™ a.m. REDE S Hao Seas creas maximum at Noon. NR oe ee ac ote Sense nate minimum about 7® 10™ p.m. The greatest force occurred at 5" 10™ a.m.; the maximum pressure of the wind while blowing probably occurs, therefore, at or after midnight. The fact that the wind blows with the greatest force at Noon, but the greatest number of times at 1" 30™ p.M., the time of the maximum temperature, explains why the swms of the pressures attain their maximum be- tween these two periods. PRESSURE OF THE WIND. 299 Times which the Wind blew from the diferent Points of the Compass.—The wind blew most frequently from the SW., and least so from SE. by E.; the number for the former, from 12 daily observations, being 403, and, for the latter, 1. If we take the sums of the times from 12 observations, for the five points SSW. to WSW., corresponding to SW., from WSW. to WNW., corresponding to W., and so for the others of the 8 principal points, we find that the number of times which the wind blew was the maximum at SW., a secondary minimum at NW., a secondary maximum at NE., and the minimum at SE. The sums are as follow :— SW. W. NW. N. NE. EB. SE. S, 963 344 208 250 476 166 55 281 The wind blew twice as often from the points included between N., W., and S., as from the opposite semi- circle N., E., and S. Sums of the Pressures with which the Wind blew from the different Points of the Compass.—The greatest sum is that for SW., being, from 12 observations, 381 Ib., and the least that for SE. by E., being 0°3 Ib. Summing the pressures for each five points, including the 8 principal points as above, we have, for 12 observations,— SW. W. NW. N. NE. i. Si. S. lb. Ib. Ib. Ib. Ib. Ib. Ib. Ib. 8345 328°3 252-9 204:°6 236°5 114:3 40°8 238°7 The sums of the pressures are, therefore, greatest about SW. ; they diminish round by W. and NW. to N., where there is a secondary minimum, a secondary maximum occurs about NE. ; the sums then diminish to SE., about which they are the minimum, increasing from thence to SW. Mean Pressure of the Wind while blowing from the different Points of the Compass.—The mean pressure of the wind was greatest while blowing from WNW., being 1-72 Ib., and least while blowing from the opposite point ESE., being 0:20 lb. If the sums of the pressures about the 8 principal points be divided by the times which the wind blew about the same points, we obtain the following means :— SW. Ww. NW. N. NE. RK. SE. Ss. Ib. Ib. Ib. Ib. lb. Ib. Ib. Ib. 0:87 0:95 1-29) 0:82 0:50 0:69 0-74 0°85 The mean pressure with which the wind blows is therefore greatest about NW., it becomes less at the N., and is least at NE., from which point it increases gradually by SE., S., SW., and W., to the maximum at NW. TABLE XXXII.—Sums of the Pressures of Wind in Table XX XI. resolved for each Hour into the Four Cardinal Points of the Compass, together with the Value and Direction of the Resultant. Resolved Sums in Resultant. Hour Gottingen Mean Time. Means. Directions. Sum of 9 Obs. Sum of 12 Obs. AA 445445245 The mean resultants are obtained on dividing the sum resultants by the number of times which the wind blew. 300 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. Diurnal Variation of the Resolved and Resultant Pressures of the Wind.—The sums resolved in the E. attain their maximum latest in the day, about 2" p.m; the sums resolved in the W. attain their maximum earliest, about Noon; while the sums resolved in N, and in S. attain their maximum about 15 p.m. The re- sultant sums of pressures attain their maximum about 0° 30™ p.m., minima occur about 74 a.m. and 8" p.m. The mean resultant attains a maximum about Noon, the minimum occurs about 35 40™ p.m.; the maximum probably occurs near midnight, a secondary minimum occurs about 7° a.m. The Direction of the Resultant seems to have a diurnal variation, being more towards the south of west in the morning and evening than about mid-day, TABLE XXXIII.—Differences of the Directions of Motions of the Lower and Upper Currents of Air, as deduced from the Comparisons of the Direction of the Wind and Motions of the Clouds. Quadrant N. to B. Quadrant E. to 8. Quadrant S. to W. Quadrant W. to N. Currents. No. of |Difts.of| Mean || No. of | Diffs: of | Mean || No. of |Diffs.of}| Mean || No. of |Diffs. of] Mean Obs. |Motion.| Diff. Obs. | Motion. | Diff. Obs. | Motion.| Diff. Obs. |Motion.| Diff. (e} fo} fo} = fo) ie} fo} fo] j 75 |+27-9 22 |+ 29.3 177, | +23-7 44 |+18-5 Se 4 7A + 9:5 + 19-0 30 |—44-2 7 |— 53-0 20 |—22-6 18 |—32-3 Cie aae a 15 |+48:3 12 |+ 50-0 87 |+47-6 23 |+26-8 “Wind — 1-9 +. 33-2 + 35°4 14 |-55-7 2 |-— 67-5 12 |-—23-7 12 |-—46-6 ay : 14 |+41-8 7 |+ 11-9 57 |+34:5 28 |+20-3 Cir. te aa 5.6 4+ 3.6 4.93.9 9 |-—50-6 2 |— 25:3 14 |-19-7 19 |—50-7 pee. 8 |+66-4 3 |+ 82-5 42 |446-7 10 |+23-9 ce 413-4 + 82-5 +345 6° |=57.2 On Alieieisteac. 7 |-—38-6 5 |-—50-6 weineh. 7 |+33-7 1 |+ 67-5 22 1132-7 16 |+19-8 pete ee +21-3| — 45.0 +20-1 2 |-—25-0 i — 157-5 5 |—35-6 8 |—87-2 This Table has been formed by taking the differences of the motions of the surface wind as observed on the anemoscope and the motions of the clouds. In order to arrive at any definite result, it was necessary to group the comparisons into quadrants of the compass. In several quadrants there are still too few comparisons to give satisfactory results. The first column under each quadrant contains the number of times which an upper current was observed to proceed from a point plus, and the number of times which it was observed to proceed from a point minus, the direction of a lower current, from N. to E., 8. and W. being the direction of reckoning. The second column under each quadrant contains the mean of the positive differences, and also the mean of the negative differences ; the third column contains the mean difference of the motions from all the observations. Taking the first case for an example—the wind blowing from a point between N. and E. the scud was observed on 75 occasions to be moving from a point on an average of 27°:9 south of the point from which the wind was blowing; and on 30 occasions from a point on an average 44°2 north of the point from which the wind was blowing. From all the 105 observations, the scud was found to move from a point 7°-4 south of that from which the wind blew. In every quadrant, the upper currents were observed more frequently to be moving from points plus than from points minus those of the lower currents. In every quadrant, however, excepting S. to W., the average difference (with two exceptions) is greater for the minus than for the positive observations. In the quadrant 8. to W. this is not the case: not only are the number of observations greatest for the upper current positive of the lower current, but the average difference of motion is also greatest (with one exception) when the upper ~ Mortons oF Cioups. 301 current is positive of the lower. If we take the mean difference from all the observations we arrive at the fol- lowing results :— The direction of the scuds or current immediately above the surface wind is always plus, reckoning from N. to E., S., and W., that of the surface wind, the average difference is greatest in the quadrant between S. and W.; in this quadrant the scud is, on the average of 197 comparisons, 19° more westerly than the surface current. The difference is least in the quadrant W. to N., where the scud, on an average of 62 comparisons, is only 3°-7 more northerly than the surface current. The direction of the cirro-strati, or current immediately above the seuds, differs most from the motion of the surface wind in the quadrant from §. to W., being, on the average of 99 comparisons, 39°-4 more westerly than the surface wind, or nearly twice the deviation of the scud. The difference in the quadrant E. to S. is also positive, being 36°:9 on an average of 14 comparisons. In the other two quadrants the difference is very small. The direction of the cirri, or current immediately above the cirro-strati, differs most from the motion of the surface wind in the quadrant E, to S., but there are only 3 comparisons. The difference in the quadrant S. to W. is nearly the same as for the cirro-strati; there is reason to believe, indeed, that, on many occasions, the two species are confounded, as the cirri frequently pass into cirro-strati. The mean differences of the mean motion of the three currents, scud, cirro-strati, and cirri, from the motion of the surface wind, are as follow :— N. to E., 147 comparisons ; mean upper current minus surface current = + 62 E. to S., 46 cee cee cee coe cee cee cee cer cee cee cee ces cee cee cee se vesccserscee == + 93-9 S. to W., B45 ce cceccecee cer cce cee cee cerceecer ccs cectescreerecesccetereescesees == + 276 W.toN., L1QD nce cee cee cee nee concen cae coe ccc ces cre ces cnscescceccscencececcsccece == + 9-5 The difference of the directions of motion of the surface and mean upper current is therefore a minimum in the quadrant from W. to N. ; the mean upper current is half-a-point S. of the surface current in the quadrant N. to E. ; two points S. of the surface current in the quadrant E. to §. ; and about two points and a half N. of the surface current in the quadrant S. to W. Tf all the cases be taken in which the motions of the upper currents of cirro-strati and cirri were observed simultaneonsly with the current of scud, we obtain the following differences of motion of the mean upper cur- rent (cirro-strati and cirri), and lower current of clouds :— N. to E., 32 comparisons ; cirro-stratus current minus scud current = + 11-1 PHO ae aes SO teh Age ae ny aah torte asl cetais a rosesaisleteinjsioecclatsieb aiveih' se ers =— 58 SPOR Neato Ofte dats aitgeeuucia ySae Ue wafeeinakials ats Pe taugeerks ios Buiaateta. tele. 2 0re EON S67 Din rasan te RR an Namie nisateinn its casein o'ghtlabicjas ve-n-sosien'eistiel = — 12-2 The numbers of comparisons in the first two quadrants are too few for a good mean; from the other it appears that the current of cirro-stratus in the quadrant S. to W. is more than two points north of the current of scud ; but, in the quadrant W. to N., it is about one point south of the seud. If the mean differences of motion, scud minus wind, and cirro-stratus minus wind, were well determined, it is evident that, in subtracting the former from the latter, we would obtain the differences, cirro-stratus minus seud ; and similarly for the differences cirri minus scud. The means for these two differences, thus obtained, are— ° N. to E., cirro-stratus and cirrus current minus scud current = — 2:0 106: HO) Sickel ee abmoneccemacs Gocgne boo CbaO don Han Hora HAC eOSrete eerie = + 04°7 DLO «, tected ADCO EEE ETc FeCOGD Cle TEL ACEO EEE noe == se boe7 AVY CO INGOT: «ath PRU ee, ettrcto re cinta oe aialea on arc.clbing Snateins aa = — 3:3 As before, the difference for the quadrant E. to S. depends on too few observations, which is indeed the case with all the quadrants excepting that of S. to W. MAG. AND MET. oss. 1848. 46 302 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXXIV Daily, Weekly, and Monthly Means of the estimated surface of the Clouds, the whole sky covered being 10-0. March. OMANANHWhHre ~ . a Lad aes (eh WwWOHHNWAdDIAD jaan | ON Tf i) peur The daily means in this table have been obtained from the 9 two-hourly observations by the formula given for the temperature, Table I. The daily means in the first week of January are the means of the 4 three-hourly observations. Annual Variation of the Surface of Cloud.—The surface of cloud is a minimum in January, the maximum in April, May, June, and July, the means for which four months differ little from each other ; the minimum surface occurs in September, after which the surface increases till December. The following are the means for the three groups of seasons, namely,— The mean meteorological seasons, for which June, July, and August, constitute Summer. The meteorological seasons for 1843, for which July, August, and September, The astronomical seasons, for which May, June, and July, Seasons. Mean Meteorological. Meteorological for 1843. Astronomical. Spring, 7:49 frees ee Summer, 7°31 6:49 7°80 Autumn, 5°85 6:41 0°93 Winter, 6:91 6°89 6:48 Range of Means, 1°64 1:36 1:87 The astronomical group is the most distinct. The maximum occurs in summer and the minimum in autumn of that group. The greatest monthly mean is that for July, being 7:87; the least is that for Sep- tember, being 5:26. The mean for the year 1843 = 6:89. SURFACE OF CLOUDS. 303 TABLE XXXV.—Estimated Surface of Cloud, with reference to the Moon’s Age and Declination. After After No. of | Surface of : Surface of} Moon 5 Surface of || Moon | No. of | Surface of Cloud. 4 Cloud. |farthest . Cloud. farthest) Days. Cloud. North. North. COnanrkwnore oo OONAAKWNDkE SO This Table has been formed from Table XXXIV. in the manner already indicated, Table X. Surface of Cloud, with reference to the Moon's Age.—The following means of groups indicate that the surface of cloud is a mmimum about new moon :— 12 days till 18 days, Full Moon, 6:9 27 days till 3:days, New Moon, 6-5 OM Siar 2 7:0 ) Peeetan lope 6:7 ie oo ain 2G) 5a, qf! Aa 1 Soe 7:0 ela cialeie ZOU. 6:9 C0 etal a 1 ae 7:0 There is an appearance of a secondary minimum at full moon, but the differences of the means are very smal].* : Surface of Cloud, with reference to the Moon’s Declination.—The following means of groups seem to indi- cate that the surface of cloud is greatest a few days before the moon is farthest south, and least a few days be- fore it is farthest north :— 25 days till 3 days, Moon farthest North, 6°6 11 days till 17 days, Moon farthest South, 7:3 OES ya artes 6:9 WA wccice.s PO 1.3. 6-6 cs oat OT 6:9 LCi coe 7 eee 6:7 | ae LS aie 74 P| ae 8 i 2 (lee 6:6 Extremes of the Daily Mean Surface of Clouds for each Month, with the ranges of the monthly means, and number of days in each month wholly overcast :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dee. Greatest, 10-0 10-0 10-0 10-0 10-0 10-0 10-0 10-0 9-2 10-0 10:0 » 10-0 Least, 1-5 3-1 0-0 4:7 2.2 0-5 4-7 1-3 0-1 1-1 0-4 2-9 Range, 8-5 6-9 10-0 5:3 78 9-5 5:3 8-7 9-1 8-9 9-6 7-1 No. of Days Overcast, \ 6 3 2 9 6 3 1 0 1 1 1 The surface of clouds was 10-0 on nine days in the month of May, and inthe month of September no day was quite overcast. Only on one day was the sky perfectly free of clouds, namely, on the 8th of March; on the 22d and 23d of September the amount was very small. * Tf the heat from the Moon have any effect on the dissipation or formation of clouds, it is obvious that the effect will be greatest during the night, when the Moon is about full; the want of observations from 9" P.M, till 5 a.m. would therefore vitiate the results more markedly than in previous cases investigated, where any effect of the Moon must be supposed sufficiently permanent to affect the means during the day as well as the night. 304 ABSTRACTS OF THE MAKERSTOUN OBSERVATIONS, 1843. TABLE XXXVI.—Means of the Estimated Surface of Cloud at the Hours of Observation, for each Month and Quarter in 1843. Mean. || Range. January February March April May June July August September October November December Spring Summer Autumn Winter The Year The observations in the first week of January were not made use of in obtaining the hourly means for that month ; no observations having been made at 18" in the second week, a correction was applied to the mean for that hour of —0°48, obtained from Table XXXIV. as follows :— {Mean cloud, Jan. 9-31, = 6°63, minus mean cloud, Jan. 16-31, = 7:11} = — 0°48. The means were afterwards corrected by + 0°30, in order to render the mean for that month from these means equal to that obtained, Table XXXIV., from all the daily means. Diurnal Variation of the Surface of Cloud.—The means for the various months present considerable ir- regularities, the maximum surface of cloud, however, occurs, with two or three exceptions, between 11 a.m. and 3 p.m. The following are the interpolated periods of the maximum surface of cloud for each of the mean me- teorological seasons (as in the previous Table) :— Spring, the max., 1° 0™ p.m. Summer, ----+++- 102 07 a.m. Autumn, -++--+++ 702 aw: a ae ee min, about 94 30™ a.m.; a Secondary rae Tes Winter, +++ esse RED OD At ee eecmes ens cecitee cas 4h 0m ame ee eee There are other secondary maxima and minima, but they are pe accidental. The periods for the astronomical group of seasons are as follow :— Spring, the max., 3" p.m. Summer), que. 95 aM. Autumn, © 92 e220: 22 P.M.; a Secondary min. 95 a.m.; a Secondary max. 6" a.m. Winter) aoe 11° a.m. The secondary minimum and maximum are well marked for autumn of this group ; there are also inflexions or minima in the summer and autumn about 34 p.m., the time at which inflexions occur in the curves for the aqueous vapour (Table XI.) From the astronomical group, the maximum surface of cloud seems to occur — after noon in the spring and autumn, and before noon in the summer and winter. The minimum occurs after 9» p.m. The maximum in the means for the year occurs shortly before noon ; a secondary maximum is shewn about 75 am.; and a secondary minimum about 9° a.m, The Diurnal Range of the Surface of Cloud, as far as it can be deduced from the 9 two-hourly means, is a minimum in autumn and a maximum in winter, QUANTITY OF RAIN. 305 TABLE XXXVII.—Quantity of Rain for each Month in 18438, by the Observatory Garden and Greenhouse Gauges. Observatory Garden Greenhouse Month. Gauge. January 1-978 February 1-926 March 0-934 April 2.231 May 3-237 June 1-311 July 2-676 August 2-752 September 1-080 October 3-645 November 2-038 December 0-949 Sums, 24-757 The quantity of rain for February, in the garden gauge, is estimated, the register for that month having been lost. The greatest quantity of rain in any month is that for October, being, by the Observatory gauge, 3°645 in. The least monthly quantity is that for March, being, by the same gauge, 0:934 in. The quantity of rain is a minimum in the solstitial and equinoctial months of 1843, maxima occurring in the intervening months, No conclusions can be drawn as to the cause of the differences of the sums for the Observatory and Garden gauges, as the gauges are not only at unequal heights above the level of the sea, but also above the soil. The results for the Greenhouse gauge shew, that such a position is sufficient to destroy the value of the instrument as a pluviometer. (See Introduction, page lvii.) The greatest amounts of rain found in the Observatory gauge at noon, having fallen within the previous 24 hours, for each month are as follow :— Jan. Feb. March. April. May. June, July. Aug. Sept. Oct. Nov. Dec. in. in. in. in. in. in. in. in. in. in. in. in. 0-650 0-387 0-290 0-468 0-403 0-420 0-386 1-411 0-252 0-890 0-460 0-253 The numbers of days in each month on which more than one-thousandth, one-hundredth, and one-tenth of an inch of rain was found in the Observatory gauge, are as follow :-— More than Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Noy. Dec. 0-001 23 22 16 19 23 16 22 19 12 30 27 17 0-010 14 7 Hil 13 17 10 14 15 6 19 16 it. 0-100 6 6 3 9 11 7 8 8 2 10 6 2 The variation of the numbers follows nearly the same law as the variations of the monthly sums of rain fallen. In 1843, more than one-thousandth of an inch of rain fell on 246 days, or on about 6 days out of 9 ; more than one-tenth of an inch fell on 159 days, or on about 4 days out of 9; more than one-tenth of an inch fell on 78 days, or on about 2 days out of 9. In dividing the monthly sums of rain by the number of days on which more than 0°001 inch fell, we ob- tain the following means for the quantity of rain which fell on days in which more than 0-001 was found in the Observatory gauge :— Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. in. in, in. in, in. i in. in. in, in. in. ine nN. 0:086 0-088 0-058 0-117 0-141 0-082 0-122 0-145 0-090 0-121 0-113 0-056 These quantities follow nearly the same law as the monthly sums. We may therefore conclude, that for those months which have the greatest number of rainy days, the mean daily fall of rain is greatest ; or, that the oftener it rains, it rains the heavier. MAG. AND MET. 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HH EEE ues EE wield oS sate go aS ae ee aia ae ae ia FH 4 HEE HH bide L KH oe oF Se HEF FE a co Baa a a 5 fon co He ane ia oe - a ae EEE He EPS. cH EH ae - od et HH HH aa EcHEE 4 ae ssaae ute secs a ul Se 4 a A SE ieee a cece iste seer 4 A age HH al a HHH a aie Hee EEE FEE aad srertt cate i. ae a < aes foe Ae HH = Boe HH - — He ae EEE ch aie cee eae one Saari aaa =n | =a] Bee fh Wd a 45 Stas aaa Bee sais | | HH ie eau PPE aa eee aoe ae EEE ch Li ke coh oH get ite ete rH : a Ere srrts ne ae: aie Sb — ae aIEie eras os LS ae Siice EHH ct = ects sce cH Va = — | aie a L sctaes co eal oH aa sure -— nei Lae . anne HHH ae ro i a. ra , a Ht | ae city uae ain FEE iE ae ie EE ae H ar L ao Hi | al a sila ia Bw HH HH Ch ae ee fa al | ie HH ae | aa H aie 5 HY H ane |_| mI |_| | a tet Ai EEE — ae Secee H rats I ce iti el H+ | socce xe ig EE ne EE Hart ae HHH caee =e i FE | a rH Ry FI cH seat a a ca a iB CI HY S Bs oe Hae HH 7 a SiSie H re Bie AL ue HS ae ee ae aa sin o eB aan Hor 4 a Bet _ He LY id H si a Le i a ve i | 5 a= a HEH a te cited peer 4 H BE a ooo bis oJ Heaee ae ae Hn ates EH 4 4 coe HH HH E aU ee a a pace i a acai cael Hy Be FE aos ieee a Ba io FL |_| a =e ais = HCH seee io co lea H ie ce ae aie (il |_| HH a tate CHE a ag Sas EEL TI] FH ee _ | Ma a feta HEE H+ sole He i os Poo qe es FE E a aan | Cy S i - HH Bila 2 oat ni a an Ean ait H+ He Srcre aH ae ecm a iz | Esa ial = ale ra C Lt Hy 4 7 a — —— aoe ae clad EH aaa a te ] ela |_| HEE gag Sue HEH | | a =H ae oe iia -_ + a Fy ae = a aia ae an cst |e H Aas | ae eee ct CI if a Be a 4 a HHH HH PEPE ale 7 a C cuaett aaa =o co c 7 ga : Bue) as HEE ia van Het CT FEE | aay. ach ie ae a apa iit aa HEE wie) | HEHE oH ye rr HE 4 SH aan . Ha ea FH Hee a ie be E E iB aa os H nes =e las on H a + oe 7 Eee Hie Be eee a Hote a EEL seca aa a oH ‘1 a Boe Siice - i He A aay eee = ssiae = Hee z aie + aps ee i. te : iS ae Lt aes Bele eg ne oo oe - at -E 7 itis a. aa a 2 A HE icc Po aH _ HH | HH an a8 FEE SrEre Jaf Baa ae eae ae sent aa iin | a a a eee ae cae jin EEE sete su ry 1] rs 4 beeel = = = = tJ rN i | — ier = py Ga fad a = ta a Gi 7 ra 4 T_] J = = ere] fst | — a wl 4 i tt 4 ry 4 Z ttt i a) tea ra ca [| el ae La — aa SEALE OR OP out = i pansy pao) im panned = = | NS | -_ —_— i _ — -— om _ oe — i — — aj — | — —_ = —_— — —. = lanes _— mt ie _ wy 1 — pam amy samt nso — — ant =n ial = oa on a oo 1 oo — a | ‘a _ _ iaaat ind - i - 4 - | ma ma ‘om a oj - ro is = ees ing S (4é vod Ad ee wh ‘O72 lO real clin ve. i — e \ \ | OM kerstoun Observations Term-D ay Magn elical Obsery Gottingen = MeanTime§ 94 “ih Aah 132 ah 15h tbh zh isi 19h, 20h ah S16 18 if 20 S Be Q 26 N ~ Q 28 Ra BEG 32 Wt T as is cDiy. L Bia § Es : S HE N 535 uel IS i a \ om 8 $30 a hae let 5 | ri q x a : ae: N +f 520 Div 780 — R e v cs 8 EE 8 lal ie Re 8 — x iz tr ass co < i ies ele aa N i Pete } tt Tht als om ie se ia | ht ae Gottingeny/oZ MW! VE J5% Hee igh V6! V7! FC: 20? 57) ae Meantime vAycending Curves trdicate decreasing Wi er 7 ee (44 Fi 3 4 25. 4, 2) Sake 1 bru Te s Sy) aca aan 4 Hit X) sae ae o ie FEE 7 L _ sree a HEE al Hen oa ae HE He HE seas aus . HoH a0 ne ag H ine | CEE Ba ia Bed EH oo eg Z coy ce He sate ae LE Bea HH Bae Bhs ee | ae | = FEE 4 = ; Hige a ae jel = a eee a = : Peo co HH Eo wel neg EEE me ai : HY Hint | Hoe HH - ao ‘a ; = an | o eat L a eee =H oat RH ai — BESS) is aa PEE meee ann A ae 7 oe ce ima a Ho oo a fait a a cies | avi a +. EEE = sees site Hed He = sree BEE oe Hy HH cH = PRC a 5 ane He Sie ao -. sre nee N ae HE git nie BEE — al —| & Boa ee iz ee et ital A Sree EE gee atte settee a BES H gee He oe co HEE fl ae ites cH C1 FE saree ai ao a ie a Bits CI ma a HE HE a H4 a5 | ara Fo 4 a HH =e ne = aan oe Scie 2 Stns Ae nate EE ial Hae — = ae 2 Ht Hae at ae aaa i HEE Ht at Ht lee sa =] ao | H | ' eb AEE ee Shela an HH Sree 7 4 @ HE cs El = H suns a oe +S; E ae cee ace LC elles re a = a set nese LLY | Fae EEE Bai ciate Fe ee cH H HE cH a “fe ae He crece HH BRE il FEE cH crate = arse a itt if Be 4 _ in a a HE MI | crite ere ae Ba Z oe HEE z ae FEE HE a. ai ete aE a 4 a ie SEE a H He co fii te a a a Sia 2 HH et _ a roo Aa E ae HH + i asa sisi See a a on ae ae ig [| + H H -+4 FR ete a Se 4 J 7 = BI mi - ee fate = a 7 4 HE ie ae alti | B ! cet HL Ee it tie rE aH eee C o aoe oe . FEE it LH 4 ae 7 H KH Hitt PEELE i C Bau Ane cas ete Ll. HH a Het al a cy ae ee Bn ‘eae . | HE an Lae = He oo FH aE a oC i. HEE | | ane LI -. H HH _ EH ol A de H Hy HE HEE a0 PH | H+ ee EEE = | He | a ma HA = o a ig is H Cur 3 cag nee EEE H sitet - CEE a Hy CI ae gS oH Se ee ae a H A aa ae Ea ; a H LS = Z au 4 an a L] a Bi sub oe ee a aa 4 ie a He Hi Zee a F a = H ie jeri CHE He A eg Ma | ie as @ Z ee ae Pos ri - fists LI x Be a a a | a | nei a - FEE He site eat ae Ft a aoe ae F eae aun a aaa + - Fel a Hee ieee Hae Be Be RHEE a a a qq HES Hai ea ay EL ry ae ae Ho 7 aa HEE Bia EET a ae ue See ce ane a ae iia jis rH Bee ¥ ee wns S. C0. 7” ac 72 ai , i) ‘on "0 rat. 72 cl Mu herstoun Observations Term-D ay Magn etical Obs er Gottingen} MeanTime§ 92 ah “ah ie PE. 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