I ) >x •f^ \ 1^ 1 Satellite della Terra) in gene- rale. Teoria dei Satelliti e del Sistema Anulare di Saturno. Teoria dei Satelliti dei pianeti Tntra-Mercuriali. Teoria dei Satelliti di Mercuric. Teoria dei Satelliti di Venere. Teoria dei Satelliti di Marte. Teoria dei Satelliti dei pianetini. Teoria dei Satelliti di Giove. Teoria dei Satellliti di Urano. Teoria dei Satelliti di Nettuno. Teoria dei Satelliti dei pianeti Extra-Nettuniani. Correzione di Elementi. Costruzione di Tavole, Perturbazioni Speciali — Applica- zione del Metodo di Meccaniche Quadrature. Figure di Equilibrio di Masse fiuide gravitanti in Rotazione. {Vedianche B 2470.) Figura della Terra— suoi Oceani e Atmosfera. Figura del Sole. Figura dei Pianeti (separata- mente per ciascun Pianeta). Figura dei Satelliti, incluso il Sistema Anulare di Saturno 1680 Figure of Comets and Meteoric Streams. 1700 Perturbed Rotation ; Reaction on other Bodies. 1710 Precession and Nutation of the Earth. (See also 0260, 3320.) 1720 Movement of the Poles on the Surface of the Earth. 1730 Libration of the Moon. (See aZso 4830.) 1740 Libration of Planets and Satel- lite?. 1750 Theory of Tides. (See also J 41, 95.) 1770 Constitution of the Solar System. 1 780 General Laws of Distribution of Planets and Comets. 1790 Origin, Stability, Develop- ment of the System. Figur von Kometen imd Meteor- Schwarmen. Storungen der Rotation durch aussere Einwirkung. Prazession und Nutation der Erde. (Siehe audi 0260, 3320. ) Bewegung der Pole auf der Erdoberflache. Libration des Mondes. (Siehe a«cA 4830.) Libration der Planeten und Satelliten. Theorie der Ebbe und Flut. (Siehe auch J 41, 95.) Konstitution des Sonnensystems. Allgemeine Gesetze der Ver- teilung von Planeten und Kometen. Ursprung, Stabihtat, Entwicke- lung des Systems. Stellar Universe. 1800 General. 1810 Structure of the Universe. 1820 Theory of Double Stars ; Calcula- tion of Orbits from Ordinary or Spectroscopic Observations. (Ephemerides see 7530.) 1830 Resisting iledium, Ether, Tem- perature of the Universe. 1840 Motion of Solar System in Space. 1850 Theory of Variable Stars, includ- ing new Stars. 1860 Theory of Nebulae and Clusters. Stellar Systems. Das Fixsternsystem und der Welt- raum. Allgemeines. Auf bau des Stemsystems. Theorie der Doppelsterne. Bahn- berechnungen mitteLst gewohn- licher oder spektroskopischer Beobachtungen. (Ephemeriden siehe 7530.) Widerstehendes Mittel, Aether, Temperatur des Weltraums. Bewegung des Sonnensystems im Raume. Theorie veranderlicher, einschl. neuer Sterne. Nebel- und Stcrnhaufentheorie. Stemsj'steme. PRACTICAL ASTRONOMY. Observatories, Instruments and Methods of Observation. 1900 General. 2000 Observatories (General). 2010 History, Situation, Descrip- tion, Reports, Per-sonnel, etc. 2020 Observatory Buildings. Domes, Piers, Rising Floors and Observing Chairs, Portable Huts, etc. 2030 Instruments (General). Old Instruments, Astrolabes, etc. PRAKTISCHE ASTRONOMIE. Sternwarten, Instrumente und Beob- achtungsmethoden. Allgemeines. Sternwarten (Allgemeines). Geschichte, Lage, Beschreibung, Berichte, Personal etc. Bauten und bauhche Einrich- tungen. Drehtiirme, Pfeiler, bewegUche Fussboden und Beobachtungs- stiihle, transportable Hiitten etc. Instrumente (Allgemeines;. Instrumente friiherer Zeit, Astrolabien etc. 9 E 1680 Figures dea cometes et des courants mcteoriques. 1700 Rotation troublee ; reaction sur les autres corps. 1710 Precession et nutation de la Terre {voy. atissi 0260, 3320). 1720 Mouvement des poles sur la surface de la Terre. 1730 Libration de la Lune (voij. aussi 4830). 1740 Libration des planetes et des satellites. 1750 Theorie des marees (voy. missi J 41, 95). 1770 Constitution du systcnie solaire. 1780 Lois gcnerales de la distribution des planetes et des cometes. 1790 Origine, stabilite, developpe- ment du systeme. Figura di Comete e di Sciami Meteoric!. Rotazione Perturbata ; Reazione su altri Corpi. Precessione e Nutazione della Terra. ( Vedi anche 02G0, 3320). Movimento dei Poli suUa Super- ficie Terrestre. Librazione della Luna. ( Vedi anche 4830.) Librazione di Pianeti e Satelliti. Teoria delle maree. ( Vedi anche J 41, 95.) Costituzione del Sistema Solare. Leggi Generali di Distribuzioiie di Pianeti e Comete. Origine, Stabilita, Sviluppo del Sistema. Univers stellaire. Universo Stellare. 1800 1810 1820 1830 1840 1850 1860 Generalites. Structure de I'univers. Theorie des etoiles doubles ; calcul de leurs orbites au moyen d' observations ordinaires ou spectroscopiques. (Pour leurs Ephemerides v. 7530). Milieu resistant, ether, tempera- ture de I'espace. Mouvement du systeme solaire dans I'espace. Theorie des etoiles variables, y compris les etoiles nouvelles. Theorie des nebuleuses et des amas. Systemes stellaires. Generalita. Struttura dell' Universo. Teoria di Stelle Doppie ; Calcolo di Orbite da osservazioni ordi- narie o spettroscopiche. (EfiEe- meridi v. 7530.) Mezzo Resistente, Etere, Tempera- tura deir Universo. Moto del Sistema Solare nello Spazio. Teoria di Stelle variabili, incluse stelle nuove. Teoria di nebulose e gruppi. Si- stemi stellari. ASTRONOMIE PRATIQUE. Observatoires, instruments et thodes d 'observation. m6- 1900 Generahtes. 2000 Observatoires (generahtes). 2010 Histoire, situation, description, rapports, personnel, etc. 2020 Construction des observatoires. Domes, pihers, planchers mo- biles, sieges d'observation, abris trans portables, etc. 2030 Instruments (generalites). Anciens instruments, astro- labes, etc. ASTRONOMIA PRATICA. Osservatorii, Strumenti e Metodi di Osservazione. Generalita. Osservatorii (generalita). Storia, Situazione, Descrizione, Rapporti, Personale, ecc. Edifizii per Osservatorii. Cupole, Pilastri, Palchi Mon- tanti e Sedie per osservare, Capanne Portatili, ecc. Strumenti (generalita). Vecchi Strumenti, Astrolabi, 10 2040 Objectives (Lenses, Mirrors) ; Calculation, Practical Work, Examination of Surfaces, Mounting in Tube, Optical Substances, Glass and ]\Ianu- facture of Glass, Comparison of Reflectors and Refractors. {See also C 3000-3100.) Optical Matters, Images, Diaphragms, Screens. Visual Refractors. Photographic Refractors. Photographic Doublets. 2050 Equatorial Mountings (Descrip- tion, etc.) and Driving Clocks. Visual Refractors, Photogra^jhic Refractors. Photographic Doublets (Por- trait Lenses). Mirrors. Hehometer. Heliostats, Coelostats. Driving Clocks, Control Pendu- lums, and Intermediate Con- nections. 2070 Meridian Instruments (Mount- ing and Description.) Transit Circle, Visual and Photo- graphic. Zenith Telescope, Visual and Photographic. Other Meridian Instruments. 2080 Extra-Meridian Instruments for Absolute Position. Altazimuth. Transit Instrument in the Prime Vertical. Almucantar. Various. 2090 Small Portable Instruments (Sex- tants, etc.). {See also J 90.) 2100 Auxiliary Instruments. Clocks, Chronometers, Watches, Chronographs. {See also B 0150.) Circles (Graduation, etc.). Levels. Mercurial Horizon. 2120 Eyepieces and Accessories. Eyepieces, Illumination, Screens Solar Ej'^epieces, etc. Enlarging Lenses, Correcting I. { Sde 1 <-»'=» ^ J «»)■ Variation of Latitude. Pendulum Observations. (See also Bono.) Disturbance of Gravity. (See also B 0180.) Ultrarotes Spektrum. Photographisch, bolome- trisch. (Wellenlangen, Kar- ten, Photographien.) Identifizierung von Linien mit Elementen. Veranderungen der Linien (Breite, Intensitiit, Stellung). Helle Linien. Energie-Verteilung im Spek- trum. TeUurische Linien. Spektroskopische Untersuchungen auf der Sonnenscheibe ohne Verfinsterung. Spektrohelio- gramme. Flecken. Fackeln. Chromosphare ohne Verfinste- rung. Bestimmung der Rotation. Spektroskopische Untersuchungen der verfinsterten Sonne. K or on a. Chromosphare. Umkehrende Schicht. PhysikaUsche Beschaffenheit, her- geleitet aus spektroskopischen Beobachtungen. Planeten. AUgemeines. Mond. AUgemeines. Ortsbestimmungen. Konstanten, Dimensionen (Durch- messer und Figur), Masse, Dichte, Entfernung. Rotation (Libration siehe auch 1730), Konfiguration der Ober- fiache, Veranderungen hierin. Atmospbare. Temperatur, Strahlung, Hellig- keit, Phasen, Erdlicht. Verfinsterungen. (Siehe avch 0350.) BedeckuD en (Fixsterne, Planeten, einzeln). (Siehe auch 0350.) Einfluss auf tcrrestrische Phano- mene. (Siehe auch Ebbe und Flut und F 0480.) Photographien, Karten, Zeich- nungen (publizierte Reproduk- tionen). Erde. AUgemeines. Geodasie. (Siehe auch J 70.) Brdte } ^'^'^^^ ""'^^ °^^^ ' "^ ^^'^ Breiten- Variation. Pendel-Beobachtimgen. (Siehe auch Bono.) Schwere-Storungen. (Siehe auch B 0180.) 19 E 4530 Spectre infra-rouge. Photographique, bolometrique (longueurs d'oncle, cartes, photographies). 4540 Identification des lignes avec leurs Elements. 4550 Changeraents dans les lignes (largeur, intensite, position). 4560 Lignes brillantea. 4570 Distribution de I'energie dans le spectre. 4580 Lignes telluriques. 4600 Recherches spectroscopiques sur le soleil en dehors des eclipses. Spectroheliograuimes. 4610 Taches. 4620 Facules. 4630 Cln-omosphere en dehors des eclipses. 4640 Determination de la rotation. 4650 Recherches spectroscopiques sur le soleil eclipse. 4660 Couronne. 4700 Chromosphere. Couche renver- sante. 4750 Constitution physique deduite des observations spectroscopiques. 4780 Planetes. Generalites. 4800 Lune. Generalites. 4810 Observations de position. 4820 Constantes, dimensions (diametre et figure) masse, densite, distance. 4830 Rotation (libration voy. ausdi 1730), Configuration et change- ments de sa surface. 4840 Atmosphere. 4850 Temperature, radiation, eclat, phases, lumiere cendree. 4860 Eclipses (votj. aussi 0350). 4870 Occultations (etoiles, planetes, se- parement) (voy. aussi 0350). 4880 Influence sur les phenomenes terrestres (voy. atissi marees et F 0480). 4890 Photographies, cartes, dessins (re- productions publiees). 5000 5050 5100 Terre. Generalites. Geodcsie (voy. aussi J 70). J Longtitude 1 , ^.^-n t oa\ i Latitude |(^-02/-O150; J 80). Variations de la latitude. Observations du pendule (voy. aussi B 0170). Pertinbations de la gravite (voy. aussi B 0180> (.E -2987) Spettro Ultra-rosso. Fotografico, Bolometrico (Lunghezee d'onda. Carte, Fotografie). Identificazione di Linee con PJlementi. Mutamenti apparenti delle Linee (Ampiezza, Intensitci, posi- zione). Linee lucenti. Distribuzione di Energia nello Spettro. Linee telluriche. Ricerche spettroscopiche sulla Superficie senza Eclisse. Spet- troeliogrammi. Macchie. Facole. Cromosfera senza Eclisse. Determinazione della Rotazione. Ricerche spettroscopiche del Sole durante 1' Eclisse. Corona. Cromosfera. Strato rovesciante. Costituzione fisica dedotta da Osservazioni Spettroscopiche. Pianeti. Generalita. Luna. Generalita. Osservazioni di posizione. Costanti, Dimensioni (diametro e figura), Massa, Dcnsita, Distanza. Rotazione (Librazione vedi anche 1730), Configurazione della Super- ficie, cangiamenti in essa. Atmosfera. Temperatura, Radiazione, Splen- dore, Fasi, Luce Cinerea. Eclissi. ( Vedi anche 0350.) Occultazioni (stelle, pianeti, sepa- ratamente). ( Vedi anche 0350). Influenza su fenomeni Terrestri ( vedi anche Maree ed F 0480). Fotografie, Carte, Disegni (pub- blicate riproduzioni). Terra. Generalita. Geodesia (vedi J 70). Variazioue di Latitudine. Osservazioni col Pendolo (vedi anche B 0170). Deviazioni della Gravita (vedi anche B 0180). 20 5300 Cosmic influence on terrestrial phenomena. (For Solar influence see 41 10 ; for Lunar influence see 4880.) 6400 Atmosphere. Refraction. (See 3350.) Absorption. {See 6960, C 3240, 3850; F. 0960.) Scintillation. {See C 3210.) Auiora. (See a^so F 1650.) Dust. {See F 0420.) 5500 Intra-Mercurial Planets. 6600 Mercury. fJeneral. 5610 Observations of position. 5620 Constants, Dimensions, Diameter and Figure, Mass and Density. 5630 Distance. (See also 4050.) 5640 Rotation, Configuration of Sur- face. 5650 Atmosphere. 5660 Temperature, Radiation, Bright- ness, Phases. 5670 Transits, Occultation. (See also 4050, 4870.) 5680 Photographs, Maps and Drawings. Kosmischer Einfluss auf terre- strische Phanomene. (Einfluss der Sonne sie^e 4110; Einfluss des Mondes siehe 4880.) Atmosphare. Refraktion. {Siehe 3350.) Absorption. {Siehe auch 69G0, C 3240, 3850; F 0960.) ScintiUation. {Siehe auch C 3210.) NordUcht. {Siehe auch F 1650.) Staub. (Sfe^eF0420.) Intra-merkurielle Planeten. Merkur. Allgemeines. Ortsbestimmungen. Konstanten, Dimensionen, Durch- messer und Figur, Masse und Dichte. Entfernung. {Siehe auch 4050.) Rotation, Konfiguration der Ober- flache. Atmosphare. Temperatur, Strahlung, Hellig- keit, Phasen. Durchgange, Bedeckungen. {Siehe auch 4050, 4870). Photographien, Karten undZeich- nungen. 5690 Spectrum. {Sec also 6820.) Spektrum. {Siehe auch 6820.) 5700 Venus. (As Mercury.) Venus. (Wie Merkur.) 5800 Mars. (As Mercury.) Mars. (Wie Merkur.) 5900 Minor Planets. (As above in order Kleine Planeten. (Wie oben, in of reference number in each sec- jeder Sektion nach der Reihenfolge tion. ) der Ordnungsnummern.) 6000 Jupiter. Jupiter. 6100 Saturn. Saturn. 6200 Uranus. Uranus. 6300 Neptune. Neptun. 6400 Extra-Neptunian Planets. Extra-neptunische Planeten. 6500 Satelhtes of Intra-Mercurial Pliiuets. Satelliten der Intra-merkuriellen Planeten. 6510 Mercury. des Merkur. 6520 Venus. der Venus. 6530 Mars. des Mars. 6540 Minor Planets. der kleinen Planeten. 6550 Jupiter. des Jupiter. 6560 Saturn (and Ring des Saturn (und dessen System). Ring-System). 6570 Uranus. des Uranus. 6580 Neptune. des Neptun. 6590 Extra-Xeptunian der extra - neptunischen planets. Planeten. 6600 Comets. General, Physical appear- Kometen. Allgemeines, physikalische ance. Families. Erscheinung, Familien. Discovery. Entdeckung. Elements of orbit. Bahnelemente. Ephemerides. Ephemeriden. Observations of position. Ortsbestimmungen. Physical appearance, tails, PhysikaUsche Erschei- etc nung, Schweife etc. 21 E Influences cosmiques sur les phe- nomenes terrcstres. (Influence solaire v. 4110; influence lunaire v. 4880.) Atmosphere. Refraction (v. 3350). Absorption (voy. GlKiO, C 3240, 3850; F09g6). Scintillation (voy. C 3210). Aurore polaire (voy. aussi F 1650). Poussieres (voy. F 0420). Plan^tes intra-Mercurielles. Mercure. Generalites. Observations de position. Constantes, dimensions, diametre et forme, masse et densite. Distance ( voy. aussi 4050). Rotation, configuration de la surface. Atmosphere. Temperatm'e, radiation, eclat, phases. Passages, occultations (voy. aussi 4050, 4870). Photographies, cartes et dessins. Spectre (voy. aussi 6820). V6nus. (Comme pour Mercure.) Mars. (Comme pour Mercure.) Petites Planefe^s (Comme ci-dessus dans I'ordre du numero indicateur dans chaque section.) Jupiter. Saturne. Uranus. Neptune. Planetes extra-Neptuuiennes. Satellites des planetes intra-Mer- curielles. de Mercure. de Venus. de Mars. des petites planetes. de Jupiter. de Satm^ne (et de son systeme d'anneaux). d' Uranus. de Neptune. des planetes Extra Neptu- niennes. Cometes. Generaltes, apparences physiques, families. Decouverte. Elements de 1' or bite. Ephemerides. Observations de position. Apparences physiques, queues, etc. Influenza cosmica su fenomeni terrestri. (Influenza solare t). 4110; influenza lunare V. 4880.) Atmosfera. Rifrazione (vedi 3350). Assorbimento (vedi 6960, C 3240, 3850 ; F 0960). Scintillazione (vedi C 3210). Aurora (vedi anche F 1650). Polvere (vedi F 0420). Pianeti Intra-Mercuriali. Mercuric. Generalita. Osservazioni di posizione. Costanti, Dimensioni, Diametro e Figura, Massa e Densita. Distanza (vedi anche 4050). Rotazione, Configurazione della Superficie. Atmosfera. Temperatura, RadiazionC; Splen- dore, Fasi. Passaggi, Occultazioni (vedi anche 4050, 4870). Fotografie, Carte, Disegni. Spettro (vedi anche 6820). Venere (come Mercurio). Marte (id). Pianetini (come sopra ordinati nu- mericamente in ogni sezione). Giove. Saturno Urano. Nettuno. Pianeti Extra-Nettuniani. Satelliti di Pianeti Intra-Mercuriali. di Mercurio. di Venere. di Marte. del Pianetini. di Giove. di Satumo (e sue Sistema Anulare). di Urano. di Nettuno. di Pianeti Extra-Nettuniani. Comete, Generalita, Apparenze fisiche, Famiglie. Scoperta. Elementi d' orbita. Effemeridi. Osservazioni di posizione. Apparenze fisiche. Code, ecc. 22 Spectrum (see also 6920). Photographs, drawings. [No registration miinbers- Reference to Comet by year and permanent number (whenever possible), with the addition, in the case of known periodic Comets whose return has been certainly observed, of the names by which they are cuuven- tioually known.] 6650 Meteors and Shooting Stars. C^Ieneral. 6700 Connections between Comets and Meteors. 6720 Zodiacal Light. Gegenschem, etc. 6800 Spectroscopy of Moon, Planets, Comets, Zodiacal Light, Terrestrial Atmosphere (Aurora, Jleteors). Spektrum. {Siefie auch 6920.) Photographien, Zeich- nungen. [Keine laufendo Numraern. Der eiuzelne Komet ist (wenn moglich) durch die festgesetzte Zahl und das Jahr zu bezeich- nen. Wo es sich um bekannte periodische Kometen handelt, deren Wiedererscheineo be- stimmt beobachtet wurde, sind noch die konventionellen Namen beizufiigen.] Meteore und Sternschnuppen. Allgemeines. Zusammenhang zwischen Kometen und Meteoren. Zodiakal-Licht, Gegenschein etc. Spektroskopie von Mond, Planeten, Kometen, Zodiakal-Licht, Erd- atmosphJire (Nordhcht, Meteore). 6810 Moon. General. Mond. Allgemeines. Atmosphere. Atmosphare. Study of Surface. Untersuchung der Oberflache. Motion. Bewegung. 6820 Planets. (Each separately.) Planeten. (Jeder besonders.) General. Allgemeines. Atmosphere. Atmosphare. Study of Surface. Untersuchung der Oberflache. Motion. , Bewegung. Rotation. Rotation. 6920 Comets. General. Kometen. Allgemeines. Wavelengths. Wellenlangen. Chemistry. Chemie. ilotion. Bewegung. 6940 Zodiacal Light. Zodiakal-: Licht. 6950 ]\Teteors. Meteore. 6960 Terrestrial Atmosphere, Aurora, Erdatmosphare, Nordlicht, tel- Telluric lines. (See also 4580, lurische Linien. (Siehc auch 5400.) 4580,-5400.) STELLAR UNIVERSE. DIE STERNENWELT. 7000 General. 7005 Stellar Photographs, Atlases, MajjS (Published Reproduc- tions, including Astrographic Chart). 7010 7020 7030 Fixed Stars. Ephemerides of stars. Observations of position. Catalogues of position from visual observations. Allgemeines Sternenphotographien, Atlanten, Karten (publizierte Reproduk- tionen, einschl. astrographische Karte). Fixsterne. Sternenephemeriden. Ortsbestimmungen. Ortskataloge nach Beobachtungen. visuellea 23 E Spectre {voy. aussi 6920). Photographies, dessins. fPas de numeros d'enregistrement. Se reporter a la comete par le numero fixe ct rannce (si possible), en y ajoutant, quand il s'agit de coiuetes periodiques connues dont le retoiir a ete observe avec certitude, les noms de convention sous lesquels elles sout connues.] Spettro {vcdi anche G920). Fotografie, disegni. [Nessun numero d' ordine. — Identificazione di couiete col numero fisso ed anno (ove possible), coll 'aggiunta, trattan- dosi di comete periodiche cono- aciute la cui riapparizione venne per certo osservata, dei loro norai convenzionali.] 6650 Met^ores et 6toiles filantes Genera- lites. 6700 Rapports entre les cometes et les meteores. 6720 Lumi^re zodiacale. Gegenschein, etc. 6800 Spectroscopie de la lune, des plan^tes, des cometes, de la lumiere zodiacale, de 1 'atmosphere terrestre (aurore polaire, meteores). 6810 Lune. Generalites. Atmosphere. Etude de la surface. Mouvement. 6820 Planetes. (Chacune separement.) Generalites. Atmosphere. Etude de la surface. Mouvement. Rotation. 6920 Cometes. Generalites. Longueurs d'onde. Chimie. Mouvement. 6940 Lumiere zodiacale. 6950 Meteores. 6960 Atmosphere terrestre, aurore polaire lignes telluriques (voy. aussi 4580, 5400). Meteore e Stelle Cadenti. Generality. Legame fra Comete e Stelle Cadenti. Luce Zodiacale. Gegenschein, ecc. Spettroscopia della Luna, dei Pianeti, delle Comete, della Luce Zodicaale, deir Atmosfera Terrestre (Aurora, Meteore.) Luna. Gencralita. Atmosfera. Studio della Superficie. Moto. Pianeti (ciascuno separatamente). Generalita. Atmosfera. Studio della Superficie. Moto. Rotazione. Comete. Generalita. Lunghezze d' onda. Ghimica. Moto. Luce Zodiacale. Meteore. Atmosfera Terrestre, Aurora,Linee Telluriche {vedi anche 4580, 5400). UNIVERS STELLAIRE. 7000 G6n6ralit6s. 7005 Photographies stellaires, atlas, cartes (reproductions pub- liees, y compris la carte astrophotographique). Etoiles fixes 7010 Ephemerides d'etoiles. 7020 Observations de position. 7030 Catalogues de position d'aprea les observations visuelles. UNIVERSO STELLARE. Generalita. Fotografie stellari, atlanti, carte (publicate riproduzioni, iuclusa la carta astrografica. ) Stelle Fisse. Effemeridi di stelle. Osservazioni di posizione. Cataloghi di posizione da osser- vazioni visuaii. 24 7040 Catalogues of position from photographic measures, e.g. Astrographic catalogue. 7050 Comparison and Discussion of Catalogues of position. 7060 Proper motion. 7070 Parallax. 70S0 Magnitude. Photometric Catalogues. 7120 Colour (integrated light). Colour Catalogues. e.g. Red Stars. Spectrum. (iSeeSOOO.) 7140 Radiation (Bolometry). [See «/.soC4200.) 7150 Stellar Diameters. 7160 Distribution in heavens, accord- ing to number, magnitude, coloiu", etc. 7500 Double Stars and Multiple Stars. 7510 Observations (visual and photo- graphic). 7520 Lists. Catalogues. Colours of Double Stars. Spectroscopic Binarj' Systems. (-SeeSGOO.) Spectroscopic Observations of Visual Binary Systems. (iSee 8500.) Invisible Companions. Distribution in heavens according to number, magnitude, colour, etc. 7530 Discussion of Orbits. Dimensions, INIass and Distance of Binary Systems. 7600 Variable Stars, including New and Lost Stars. Observations, Light Curves. Lists, Catalogues. Classification. Types of Variable Stars. Spectrum. (,Spe 8300.) Distribution in heavens according to number, magnitude, colour, etc. 7700 Star Clusters. Position. Triangulations. Variable Stars in Clusters. Distribution in heavens according to numbers, magnitude, colour, etc. 7800 Nebulae. Observations (form, brightness, position). Variations in Nebulae. Ortskataloge nach phoio- graphischen Messungen, z. B. astrographischer Katalog. Vergleichung und Diskussion von Sternkatalogen. Eigenbewegung. Parallaxe. Grosse. Photometrische Kataloge. Farbe (GesammtUcht). Farben-Kataloge, z. B. rote Sterne. Spektrum. (iSz'e^e awe ^8000.) Strahlung (Bolometrie). (Siehe auch C 4200.) Sterndurchmesser. Verteilung am Himmel nach Anzahl, Grosse, Farbe etc. Doppelsterne und mehrfache Sterne. Beobachtungen (visuelle und photographische). Listen. Kataloge. Farben von Doppelsternen. Spektroskopisch-binare Systeme. (Siehe auch 8600.) Spektroskopische Beobachtungen visueller binarer Systeme. (Siehe auch 8560.) Unsichtbare Begleiter. Verteilung am Himmel nach Anzahl, Grosse, Farbe etc. Bahnbestimmungen. Dimensionen, Masse und Distanz binarer Sj'steme. Verjinderliche Sterne, einschl. neuer u. verlorener Sterne. Beobachtungen, Lichtkurven. Ijisten, Kataloge. Klassification. Typen verander- licher Sterne. Spektrum. (Siehe auch S300.) Verteilung am Himmel nach Anzahl, Grosse, Farbe etc. Sternhaufen. Oerter. Vermessungen. Veranderliche Sterne in Stern- haufen. Verteilung am Himmel nach Anzahl, Grosse, Feirbe etc. Nebel. Beobachtungen (Gestalt, Hellig- keit, Oerter). Veranderuneen in Nebeln. 25 E 7040 Catalogues de position d'apres les mesures photographiques, far ex : Catalogue astrophoto- graphique. 7050 Comparaison et discussion des catalogues de position. 7060 Mouvements propres. 7070 Parallaxes. 7080 Grandeurs. Catalogues photometriques. 7120 Couleur (lumiere integrale). Catalogues par couleurs (ex. Etoiles rouges). Spectre (wy. 8000). 7140 Radiation (bolometrie) {voy. aussi C 4200). 7150 Diametres stellaires. 7160 Distribution dans le ciel suivant le nombre, les grandeurs, la couleur, etc. 7500 Etoiles doubles et etoiles multiples. 7510 Observations (visuelles et photo- graphiques). 7620 Listes. Catalogues. Couleurs des etoiles doubles. Etoiles doubles spectroscopiques {voy. 8600). Observations spectroscopiques d'etoiles doubles visuelles {voy. 8560). Compagnons invisibles. Distribution dans le ciel suivant le nombre, les grandeurs, les couleiurs, etc. 7530 Discussion d'orbites. Dimensions, masse et distance des systemes binaires. 7600 Etoiles variables, y compris les 6toiles nouvelles et les etoiles perdaes. Observations, courbes de lumiere. Listes. Catalogues. Classification. Types d'etoiles variables. Spectre (wy. 8:^00). Distribution dans le ciel suivant le nombre, les grandeurs, les couleurs, etc. 7700 Amas d'etoiles. Positions. Triangulations. Etoiles variables en amas. Distribution dans le ciel, suivant le nombre, les granduers, les couleurs, etc. 7800 N6buleuses. Observations (forme, eclat, posi- tion). Variations dans les nebuleuses. Cataloghi di posizione da misure fotografiche, e.g. catalogo astro- grafico. Comparazione e discussione di cataloghi di posizione, Moto proprio. Parallasse. Grandezza. Cataloghi Fotometrici. Colore (luce intera). Cataloghi di Stelle Colorate, p. es. Stelle Ilogse. Spettro {vedi anche 8000). Radiazione (Bolometria). ( Vedi anche C 4200). Diametri Stellari. Distribuzione in cielo secondo il numero, la grandezza, i colori, ecc. Stelle Doppie e Multiple. Osservazioni (visuali e fotografiche). Liste. Cataloghi. Colori di SteUe Doppie. Sistemi Binari Spettroscopici {vedi anche 8600). Osservazioni Spettroscopiche di Sistemi Binari Visuali {vedi anche 8560). Compagni Invisibili. Distribuzione in cielo secondo il numero, la grandezza, i colori, ecc. Discussione d' orbite. Dimensioni, Massa e Distanza di Sistemi Binari. Stelle Variabili, inclose le Stelle Nuove e perdute. Osservazioni, curve di Luce. Liste. Cataloghi. Classificazioni. Tipi di StelleVari- abili. Spettro {vedi anche 8300). Distribuzione in cielo secondo il numero, la grandezza, i colori, ecc. Gruppi di Stelle. Posizione. Triangolazioni. Stelle Variabili nei Gruppi di Stelle. Distribuzione in cielo secondo il numero, la grandezza, i colori, ecc. Nebulose. Osservazioni (forma, splendore, posiTiione). Variazioni nelle Nebulose. 2fi Diffused Nebulosity {e.g. Pleiades, Orion). Planetary Nebulae. Distribution in heavens according to number, magnitude, colour, etc. Nebulfe and Clusters. Photographs, Maps, Drawings (published reproductions). 7900 Milky Way. Stellar Spectroscopy (Stars, Nebulse, Clusters). 8000 General. (Books, treatises). 8010 Stars. 8020 Wavelengths of lines for indivi- dual stars. 8040 Comparison of Wavelengths, intensity and width, in dif- ferent stars. 8050 Identification of Elements. 8070 Distribution of Energy in Spectrum. 8080 Physical Constitution (Pres- sure, Temperature). 8100 Classification. 8120 Study of Special types of Spectra. 8140 Distribution of types of Spectra in the Heavens. 8200 Nebulse and Clusters. (With divisions as for Stars.) 8300 Variable Stars, including new Stars. (With divisions as for Stars.) 8400 Peculiar Spectra. 8450 Photographs of Spectra (pub- lished reproductions). Drawings and Maps of Spectra. 8500 Motion in the line of sight. Methods. Results. 8550 Variable motion in the line of sight. 8560 Spectroscopic observations of Visual Double Stars. 8600 Spectroscopic Binary and Mul- tiple Systems. 8620 Orbits from spectroscopic obser- vations (for Theory see 1820). 8630 Parallax from spectroscopic observations (for Theory see 1820). Ausgedehnte Nebelmaterie (z. B. Plejaden, Orion). Planetarische Nebel. Verteilung am Himmel nach Anzahl, Grosse, Farbe, etc. Nebel und Sternhaufen. Photograph ien, Karten, Zeich- nungen (publizierte Reproduk- tionen). Milchstrasse. Stern-Spektroskopie (Sterne, Nebel, Sternhaufen). AUgemeines. (Biicher, Abhand- lungen). Sterne. Wellenlangen von Linien fiir einzelne Sterne. Vergleichung von Wellenlange, Int€iLsitat und Breite der Linien verschiedener Sterne. Identifizierimg von Elementen. Energieverteilung im Spek- trum. Physikahscher Zustand (Druck, Temperatiu:). Klassification. Untersuchung spezieller Typen von Spektren. Vertheilung der Spektraltypen am Himmel. Nebel und Sternhaufen (mit Unterabteilungen wie bei Sternen). Veranderliche Sterne, einschl. neuer Sterne (mit Unterabtei- lungen, wie bei Sternen). Eigenartige Spektra. Photogramme von Spektren (publizierte Reproduktionen). Zeichnungen und Karten von Spektren. Bewegung in der Gesichtslinie. Methoden. Resultate. Veranderliche Bewegung in der GesichtsUnie. Spektroskopische Beobachtungen von visuellen Dopplesternen. Spektroskopische Systeme von zwei oder mehr Componenten. Bahnen nach spektroskopischen Beobachtungen (Theorie siehe 1830). Parallaxe nach spektroskopischen ! Beobachtungen (Theorie siehe ■ 1820). 27 E Nebulosit<5s diffuses {ex. celles dea Pleiades, d' Orion). Nebuleiises planetaires. Distribution dans le ciel suivant le nonibre, les grandeurs, les couleurs, etc. Nebuleuaes et anias. Photographies, cartes, dessins, (reproductions publiecs). 7900 Vole Lact^e. Spectroscopic stellaire (6toiles, n6buleuses, amas)- 8000 Gcneralitcs. (Livres, traites.) 8010 Etoiles. 8020 Longueurs d'onde des ligues pour les etoiles individuelles. 8040 Comparaison des longueurs d'onde, de I'intensite et de la largeur des lignes dans les diffcrentes etoiles. 8050 Identification des elements. 8070 Distribution de I'energie dans le spectre. 8080 Constitution physique (pres- sion, temperature). 8100 Classifications. 8120 Etude de types spt^ciaux de spectres. 8040 Distribution des types spec- traux dans le ciel. 8200 Nebuleuses et amas. (Avec divisions conimc pour les etoiles. ) 8300 Etoiles variables, y compris les etoiles nouvelles. (Avec divisions comme pour les etoiles.) 8400 Spectres particuliers. 8450 Photographies de spectres (re- productions publiees). Dessins et cartes de spectres. 8500 Mouvement suivant le rayon visuel. Methodes. Resultats. 8550 Mouven\ent variable suivant le rayon visuel. 8560 Observations spectroscopiques d'etoiles doubles visuelles. 8600 Systemes binaires et multiples 8 pectrosc opi ques. 8620 Orbites deduites d' observations spectroscopiques (pour la theorie voy. 1820). 8630 Parallaxes deduites d' observa- tions spectroscopiques (pour la theorie voy. 1820). Nebulosita, Diffusa (p. es. Pleiadi, Orione). Ncbulose Planetarie. Distribuzione in ciclo secondo il numero, la grandezza, i colori, ecc. Nebuloso e Gruppi di Stelle. Fotografie, Mappe, Disegni (pub- blicate riproduzioni). Via Latiea. Spettroscopia (Stelle Nebulose.Gruppi di Stelle). GeneraUta. (Libri, Trattati). Stelle. Lunghezze d'onda di linee per singole stelle. Confronto di lunghezze d' onda, intensita e ampiezza, in dif- ferenti stelle. Identificazione di elementi. Distribuzione di energia nello spettro. Constituzione Fisica (Pressione, Temperatura). Classiiicazione. Studio di speciali tipi di spettri. Distribuzioni di tipi di spettri in cielo. Nebulose e Gruppi di Stelle. (Con divisioni come per le Stelle.) Stelle Variabili, incluse Stelle Nuove. (Con divisioni come per le Stelle.) Spettri speciali. Fotografie di Spettri (pubblicate riproduzioni). Disegni e Mappe di Spettri. Movimento nella direzione della visuale. Jletodi. Risultati. Moto variabile nella direzione della visuale. Osservazioni spettroscopiehe di Stelle Doppie Visuali. Sistemi spettroscopici Binari e Multipli. Orbite da osservazioni spettro- scopiehe (per la teoria vedi 1820). Parallasse da osservazioni spet- troscopiehe (per la teoria vedi 1820). 28 ANCIENT ASTRONOMY AND ASTROLOGY. Ancient Astronomy. 9000 General. 9020 Further sub-divisions according to Countries and Epochs. ASTRONOMIE DER ALIEN. ASTROLOGIE. Astronomie der Alten. AUgemeines. Weitere Unterabteilungen nach Liindern und Epochen. Astrology. Astrologie. 9050 General. AUgemeines. 9060 Further sub-didsions according Weitere Unterabteilungen nacb to Countries and Epochs. Landern und Epochen. CHRONOLOGY. CHRONOLOGIE. Measure of Time. Zeitmessung. 9200 General. AUgemeines. 9220 Methods. Methoden. Regulation of Time. Zeitrechnung. 9300 General. AUgemeines. 9310 Solar Year. Sonnenjahr. 9320 Lunar Year. Mondjahr. 9330 Month. Monat. 9340 Week. Woche. 9350 Day. Tag. 9360 Sidereal Day. Siderischer Tag. 9370 Mean and true Solar Day. Mittlerer und wahrer Sonnen- tag. 9380 Equation of Time, etc. Zeitgleichung etc. 9390 Sub-Division of Day. Einteilung (Unterabteilungen) Hoiu-s, Reckoning, Distribu- des Tages. tion. Stunden und ihre Zahlung. 9400 Time Reckoning. Zeitzahlung. 9410 Local, Universal, Zone (OflBcial) Ortszeit, Universalzeit, Zonen- Time. (officielle Verkehrs-) Zeit. 9420 Calendars — Julian, Gregorian, Kalender. — Julianischer und Church Almanac, Jewish, Moha- Gregorianischer Kalender, Kir- inedan. Various. chen-Kalender, jiidischer Ka- lender, mohammedanischer Ka- lender etc. 9450 Eras. Aeren. 29 E ASTRONOMIE ANCIENNE ET ASTROLOGIE. Astronomie Ancienne. 9000 Goneralites. 9020 Autres subdivisions suivant les pays et les epoques. ASTRONOMIA ANTICA E ASTROLOGIA. Astronomia Antica. Generalita. Ulteriori suddivisioni in accordo con paesi e epoche. Astrologie. 9000 Geue.ralites. 9060 Autres subdivisions suivant les pays et les epoques. Astrologia. Generalita. Ulteriori suddivisioni in accordo con paesi e epoche. 9200 9220 CHRONOLOGIE. Mesure da Temps. Generalites. Methodes. CRONOLOGIA. Misura del Tempo. Generalita. Metodi. Division du Temps. 9300 Generalites. 9310 Annce solaire. 9320 Anuee lunaire. 9330 Mois. 9340 Semaine. 9350 Jour. 9360 Jour sideral. 9370 Jour solaire moyen et vrai. 9380 Equation du temps, etc. 9390 Subdivision du jour. Heures, definition, distribu- tion. 9400 Manieres de compter le temps. 9410 Temps local, universel, par zones (fuseaux horaires). 9420 Calendriers — Julien, Gregorien, ecclcsiastique, Juif, Mahome- tan, divers. Regolarizzazione del Tempo. Generalita. Anno Solare. Anno Lunare. Mese. Settimana. Giorno. Giorno siderale. Giorno solare, medio e vero. Equazione del Tempo, ecc. Suddivisione del Giorno. Ore, Modo di contare, Distri- buzione. Modo di contare il Tempo. Tempo Locale Universale, per Fusi (Tempo Officiale). Calendarii — Giuliano, Gregoriano, Ecclesiastico, Ebreo, Maomet- tano, Varii. 9450 Eres. Ere. 31 E INDEX TO (E) ASTEONOMY. 2080, 2080, to Aberration, Correction for 0250, Determination of Constant of Absorption by Earth's Atnio- spbere . . Addresses. . . . . . Almucantar . . . . Altazimuth Appulses, Calculation of Astrolabes Astrology Subdivision according Countries and Epochs Astronomy, Ancient Subdivisions accord- ing to Countries and Epochs. . Practical Spherical . . Theoretical.. Atmosphere of the Earth, Figure of Absorption by Aurora Baily's Beads Bibliographies . . Binary System, Spectroscopic . . Biography Bolometry Calendars Centre of Earth, Reduction to . . Chairs, Observing Chromosphere . . 4070, 4300, Spectroscopy during Eclii^se without Eclipse Chronographs Chronometers Circles (Graduation, etc.) Clocks ■■ Driving . . , , 3100 Clusters, Star .. .. 1860,7700 Spectroscopy . . . . 8200 3310 Coelostats 2050 Collected Works 0030 5400 Colled ions 0060 0040 Comets fi600 3080 Figure 1680 3080 Orbits 1130 0350 Spectroscopy . . . . 6920 2030 and Meteors, Connection 9050 between 6700 Comparison Spectra, Produc- 9060 tion of 2250 9000 Congresses, Eeports of . . . . 0020 Constant of Aberration, Deter. 9020 mination of 3310 1900 Precession and Nuta- 0100 tion. Determination of . . 3320 1000 Constants, Astronomical, Deter- mination by Observation . . 3300 1610 Contact, Times of .. .. 4230 5400 Control Pendulums . . . . 2050 5400 Coordinates, Greocentric. . . . 0300 4340 ■ • Heliocentric . . . . 0300 0032 Transformation and Differ- 8600 ential Variation . . . . 0110 0010 Corona 4240 4200 and Chromosphere • . 4300 9420 Moon on 4340 0200 Spectroscopy during Eclipse 4660 2020 • without Eclipse . . 4070 4320 Correcting Lens for Spectroscopic 4700 Observations 2250 4630 Cosmic Influence on Teirestrial 2100 Phenomena 5300 2100 Cosmogony 3290 2100 Day 9350 2100 — ^ Mean and True Solar . . 9370 2050 . Sidereal 9360 32 Day, Subdivision. . 9390 Diameter . . 0220 Stellar 7150 Diapliragms 2040 Dictionaries 0030 Distribution of Planets and Comets . . 1780 Domes 2020 Double Stars . . 1820 ,7500 -7530 Doublets, Pliotographic. . 2040 , 2050 Drawings of Moon 4890 Stellar Spectra 8450 Sun .. 4360 Dust 5400 Earth 5000 Atmosphere 5400 Figure 1610 Theory and Numerical Application 1280 Eclipses . . 0350 Lunar 4860 Solar 4210 Solar, Ephemerides 4220 Observations . . 4230 Predictions . . 4220 Elements, Correction 1560 Elements of Stars, Identification 8050 Ephemerides, Calculation 0310 ,4220 of Comets . . 6600 of Double Stars 7530 of Minor Planets . . 5910 of Stars 7010 Equatorial Mountings . . 2050 Eras 9450 Ether 1830 Exposing Shutters 2120 Extra- Meridian Instruments 2080 ,3080 Extra-Neptunian Planets 64C0 -6490 Satellites 1550, 6590 Spectrum fi490, 6820 Theory and Nu- merical Application . . 1360 Eyepieces and Accessories 2120 Eyepieces, Solar . . 2120 Faoulse 4070 Spectroscopy 4620 Flattening of the Heavens, Apparent 0105 Flexure . . 3220 Floors, Rising 2020 G-egenschein 6720 Geodesy . . 5050 G-lass, ilanufacture 2040 G-rating, Objective 2210 G-ravity, Centre of 1200 Disturbance of 5100 Heliometer 2050, 3050 Heliostats 2050 History . . 0010 Horizon, Dip of . . . , 0210 Hours . . 9390 Huts, Portable . . . . 2020 Illumination of Field of V ision.. 2120 Images . . 2040 Institutions 0020, 0060 Instruments . . 2030 Adjustment . . 3000 Auxiliary . . . . 2100 Comparison of Efiiciency . . 2280 Portable . . .. 2090 Intra- Mercurial Planets. . . . 5500 Satellites 1470, 6500-6590 Theory and Numerical Application . . 1290 Irradiation . . 3200 Jupiter 6000-6090 Satellites 1520, 6550 Spectrum . . 6090, 6820 Theory and Numerical Application .. . . 1320 Kepler's Laws .. 1110 Latitude . . 0150, 5100 Variation of . . 5100 Lectures . . . . 0040 Lenses 2040, 2050 Correcting . . . . 2120 Enlarging . . . . 2120 Levels . . 2100 Libration of Planets and Satel- lites .. 1740 Libration of the Moon . . . . 1730 Lines, Bright Solar . . 4560 Solar, Changes i in A ppear- ance .. 4550 Identificati on with Elements . . 4540 Longitude 0150, 5100 Lumiere Cendree. . . . 4850 Maps of Moon . . . . 4890 of Stellar Spectra . . . . 8450 Mars 5800-5890 Occultation.. 4870, 5870 Satellites 1500,6530 Spectrum . . 5890, 6820 Theory and Numerical Application .. 1300 Mechanical Quadratures, Method of . . 1590 Mechanics, Celestial .. 1000 Mercurial Horizon . . 2100 Mercury . . 5600-5690 Occultation . . 4870, 5670 Satellites 1480, 6510 Spectrum . . 5690, 6820 Numerical Application .. .. 1260 33 E Meridian Instruments . . 2070, 3070 Line.. ., 0150 Meteoric Streams, Figure of . . IGSO Orbits 1130 Meteors . . . . . . . . 6650 Spectroscopy . . . . 6950 Micrometer for Measuring Plio- tograpliic Si)ectra . . 2260, 3100 for Visual Observations 2260, 3100 MicrouK^rers . . . . . . 2140 Milky Way 7900 Minor Planets . . . . 5900-5990 Elements and Epheme- rides 5900 ObseiTations . . . . 5910 Satellites . . 1510, 6540 Theory and Numerical Application .. .. .. 1310 Mirrors 2040, 2050 Monochromatic Images, Appara- tus for . . Month Moon Atmosjjhere Brightness . . Configuration of Surface . . Constants and Dimensions Density Distance Drawings Eclipses Influence on Terrestrial Phenomena Maps ■ Mass . . Observations for Position . . Occultation by Phases Photographs Radiation . . Rotation Spectroscopy Temperature Theory of . . Movement of Earth and Equi- noxes, Correction for . . . , 0240 Orbitnl, of three or more Bodies 1200 of two Bodies . . 1110 Multiple Stars . . . . 7510, 7520 Multiple Systems, Spectroscopic 8600 Museums 0060 Nebula} I860, 7800 Spectroscopy . , . . 8200 2270 9330 4800 4840 4850 4830 4820 4820 4820 4890 4860 4880 4890 4820 4810 4870 4850 4890 4850 4830 6810 4850 1400 Neptvme Satellites Spectrum Theory Applic&tion Nomenclature (e-2987) and 6300-6390 1540, 6580 6390, 6820 Numerical . . 1350 . . 0070 Nutation, Determination of Con- stant . . , . . . . , 3320 of the Earth . . 0260, 1710 Objective Grating . . . , 2210 Prism 2210 Objectives. . . . . . . . 2040 Observations, Reduction and Rec- tification .. .. 30.30-.3250 Observatories . . . . 2000, 2010 Observatory Buildings . . . , 2020 Occultation, Calculation of . . 0350 by the Moon . . . . 4870 Oceans of the Earth, Figure of. . 1610 Optical Matters . , . . . . 2040 Orbits, Calculation .. 1120,1820 Character of . . . , 1200 Correction .. ., .. 1160 Periodic . . . . . . 1200 Stellar, from Spectroscopic Observations . . . , . . 8G20 Parallax . . . . . . . . 022Q Annual, Correction for . . 0270 of Fixed Stars . . . . 7070 Solar 4050 Stellar, from Specti-oscopic Observations . . . . . . 8630 Pedagogy 0050 Pendulum Observations.. ., 5100 Periodicals . . . . , . 0020 Personal Equations . . . . 3200 Perturbations, Greneral . . , , 1250 Special 1590 Philosophy . . . . . . 0000 Photographic Apparatus . . 2130 Photographic Plate Holders . . 2120 Photographs, Celestial, Reduction of 3250 Lunar 4890 Stellar 7005 Spectra . . . . 8450 Solar 4360 Photometry . . . . . . 2100 Piers . . . , . . . . 2020 Planetary Theory . . . , 1250 Planets 1130, 4780 Figure 1640 Orbits 1130 Spectroscopy . . 6800, 6820 Polarization Apparatus . . . . 2300 Poles, Movement on the Sur- face of the Earth . , . . 1720 Precession, Correction for . , 0260 Determination of Constant 3320 of the Earth . , 0260, 1710 Prism Combinations . . . . 2240 Objective . . . . . . 2210 Prizes 0020 Radiometry . , . , . . 2500 Reflectors and Refractors, Com- parison . , . . . . . . 2040 34 Refraction 0210, 3100, 3350. 5400 Eefractors, Photographic 2040, 2050 Visual . . . . 2040, 2050 Rising . . . . . . . . 0150 Rotating Masses of Fluid, Figures of Equilibrium of . . . . 1600 Rotation of Sun, Determination by Spectroscopy . . . . 4640 Rotation, Perturbed .. .. 1700 SatcUites, Figure .. .. 1660 Theory . . . . . . 1450 Saturn 6100-6190 Satellites and Ring System 0560 Spectrum . . . . 6190, 6820 Theory and ^Numerical Application 1330 of Ring System and Satellites 1460 Scintillation . . . . . . o-iOO Screens 2040, 2120 Screws, etc., Errors of . . . . 3220 Setting 0150 Sextants 2090 Shadow Track of Solar Eclipses, Map of 4220 Shooting Stars . . . . . . 6650 Size of the Heavenly Bodies, Apparent . . . . . . 0105 Societies, Reports of . . . . 0020 Solar Motion 3320 Processes, Connection with Terrestrial Phenomena . . 4110 System, Constitution . . 1770 Description . . . . 4000 Motion in Space . . 1840 Origin, Stability, and Development . . . . . . 1790 Theory . . . . 1100 Spectra, Peculiar Stellar.. .. 8400 Pnotographic, Micrometer for 2260 Production of Comparison 2250 Stellar, Distribution in the Heavens . . . . . . 8140 Study of Special Types 8120 Spectrographs . . . . . . 2220 Spectroheliograph . . . . 2270 Spectrophotometry . . . . 2400 Spectroscopes . . . . . . 2220 Spectroscopic Apparatus 2200, 2250 Theory and Adjustment 2280 Observations, Correcting Lenses for 2250 Physical Constitution of the Sun deduced from . . 4750 Researches of Sun in Eclipse 4650 of Surface of the Sun without Eclipse . . . . 4600 Spectroscopv of Clusters . . 8200 — Comets . . 6800, 6920 Meteors . . . . 6950 Spectroscopy of Moon . . 6800, 6810 Moon, Planets, Comets, Zodiacal Light, and Terrestrial Atmosphere 6800 Nebulic . . . . 8200 ■ Planets . . 6800, 6820 Stars . . . . 7120, 8010 Sun and Eclipses .. 4500 Terrestrial Atmo- sphere .. .. 4580, 6800, 6960 Variable Stars . . 8300 Zodiacal Light 6800, 6940 Spectrmn, Solar . . . , 4500-4750 Distribution of Energy in '. 4570 . . 4540 Lines in Stellar, Distribution of Energy in Ultra-red Solar Ultra-violet Solar . . Visible Solar Sphere, Celestial . . Star Clusters Reduction, Correction for Movement of Earth, &c. Stars, Classification Double . . 1820, 7500-7530 Ephemei'ides of . . . . 7010 Catalogues of Position 7030, 7040 Colour . . . . ■ . . 7120 Comparison of Catalogues of Position Distribution in Heavens . . Magnitude . . Observations of Position . . Proper Motion Radiation . . IMotion in the Line of Sight Multiple . . . . 7510 Physical Constitution Spectroscopy Variable Variable ]\Iotion in Line of Sight . . Stellar Spectroscopy Svstems Universe . . . . 1800, 7000 Resisting Medium in 1830 Structure . . . . 1810 Temperature . . . . 1830 Theory .. .. 1800 Stereo-comparator . . . . 2140 Sun 4010 Atmosphere . . . . 4070 Brightness 4200 Chromosphere . . . . 4070 Constants 4030 Drawings . . . . . • 4360 Eclipses 0350, 4010, 4230, 4220 Figure . . . . . . 1630 8070 4530 4510 4520 0110 7700 0280 8100 7050 7160 7080 7020 7060 7140 8500 7520 . . 8080 . . 8010 1850, 7600 the . . 8550 8000-8630 . . 1860 35 E Sun, Parallax .. .. .. 4050 Periodic Phenomena of Surface 4100 Pliofcographs . . . . 4360 Position of 4020 Radiation Constant . . 4200 Rotation 4060 Spectroscopy . . . . 4500 Temperature . . . . 4200 Sun-Spots 4070 Spectroscopy . . . . 4610 Tables 0030 Construction . . . . 1570 Telluric Lines in Solar Spectrum 4580 Terrestrial Atmosphere, Spectro- scopy 4580,6960 Phenomena, Connection with Solar Processes . . . . 4110 during Eclipses . . 4350 Influence of Moon on 4880 Text Books 0030 Tides, Theory 1750 Time, Equation 9380 Local 9410 Measure 9200 Methods of Measuring . . 9220 Reckoning 9400 Regulation 9300 Universal . . . . . . 9410 Zone 9410 Transit Circle . . . . 2070, 3070 instrument . . . . . . 2080 Transits, Calculation of . . . . 0350 Treatises, General . . . . 0030 Twilight 0210 Universal Gravitation, Law of . . 1050 Universe, Temperature of . . 1830 and Uranus Satellites Spectrum Theory Application Variable Stars Spectroscopy Venus Distance Occultation. . Satellites Spectrum Tlieory Application Transit Vertical Circle Visual Double and 6200-6290 1530, 6570 6290, 6820 Numerical . . 1340 . . 1850, 7600 .. 8300 5700-5790 4050, 5730 . . 4870, 5770 1490, 6520 5790, 6820 Numerical 1270 4050, 5770 2080 Stars, Spectro- scopic Observations . . . . 8560 Watches 2100 Wavelengths, Comparison in Different Stars 8040 of Lines for Individual Stars 8020 Week 9340 Year Books 0020 Lunar 9320 Solar 9310 Zenith Telescope 2070 Zodiacal Light 6720 — Spectroscopy . . . . 6940 (E 2987) d2 36 TABLE DES MATI^RES L'ASTRONOMIE (E) Aberration, Correction pour 1' 0250, 3100 Determination de la con- stante de 1' 3310 Abris,d6montables,transportables 2020 Absorption par I'atmospbere de la terre . . . . . . . . 5400 Almucantar . . . . 2080, 3080 Altazimut 2080.3080 Amas d'etoiles . . . . 1860, 7700 Spectroscopic d' . . 8200 Annee lunaire . . . . . . 9320 solaire . . . . . . 9310 Annuaires.. .. .. .. 0020 Aplatissement apparent duciel.. 0105 Ajjpareils de polarisation . . 2300 pbotograpliiques . . . . 2130 epectroscopiques . . 2200, 2250 Tbeorie et ajustement des 2280 Appulses . . . . . . . • 0350 Astrolabes 2030 Astrolode. . . . . . . . 9050 Subdivisions arant trait aux pays et aux epoques . . 9060 Astronomic ancienne . . . . 9000 Subdivisions ayant trait aux pays et aux epoques 9020 jjratique . . . . . . 1 900 spberique . . . . . . 0100 theorique . . . . . . 1000 Atmospbere de la terre . . . . 1610 terrestre, Spectroscopic de 1' 6960 Aurore . . . . . • • • 5400 Bibliograpbies . . . . . • 0032 Bioiirapbie 0010 Bolometrie 4200 Calendriers . . . • • • 94^:0 Cartes de la lune 4890 de spectres stellaires . . 8450 Centre de la terre. Reduction au 0200 Cercle meridien . . . . 2070, 3070 vertical 2080 Cercles (graduation, etc.) . . 2100 Chapelet de Baily . . . . 4340 Chromosphere '. . .. 4300,4320 Spectroscopie de la, pendant une eclipse solaire . . . . 4700 sans eclipse . . . . 4630 Clironographes . . . . . • 2100 Chronometres 2100 Ccelostats 2050 Collections 0060 Comfetes .. 6600 Figure des . . . . . . 1680 Orbites des 1130 Spectroscopie des . . . . 6920 Comparaison, Production de spectres de . . . . . . 2250 Conferences 0040 Congres, Rapports de . . . . 0020 Constante de I'aberration, Deter- mination de la . . . . . . 3310 de la precession et de la nutation, Determination de la 3320 CoDstantes astronomiques, Deter- termination par I'observation 3300 Contacts, Heurea des . . . . 4230 Coordonnees . . . . • . 0300 Transformation et variations differentielles des .. .. 0110 Cosmogonie . . . . • • 3290 Couchers 0150 Coiipoles .. 2020 Couranls meteoriques. Figure des 1680 Orbites des . . . . 1130 Couronne 4070, 4240 et chromosphere . . 4070, 4300 La lune sur la . . . . 4340 37 E Couronne sans eclipse Spcctroscopie fie la, pendant line eclipse du soleil . . Crepusciile Dessins de la lune des spectres stellaires du soleil Diametres.. Diametres stellaires Diaphragmes Diclionnaires Discours . . D6mes Doubles (etoiles) visuelles, Obser- vatious spe-troscopiques des . . Doublets photograpliiques 2040, Eclairage des instruments Eclipses . . lunaires solaires Ephemerides des Observations des Predictions des Ecrans 2040, Elements, Correction des des etoiles, Identification des Enseigneinent Ephemerides, Calcul des 0310, Equations personelles .. Eres Espace, temperature de 1' Ether Etoiles, Classification des Constitution physique des. . doubles . . . , 7500, ephemerides des orbites des — Theorie des . . filantes ephemerides d' Catalogues de position des 7030, Comparaison des cata- logues de position des. . Couleur des . . Distribution des, dans le ciel . . Cxrandeurs des Mouvenients propres des Radiation des. . Mouvements des, dans la ligne de vision . . . . 8500, multiples . . . . 7510, Observations de position . . ■ Reduction des positions des Spectroscopic des . . variables . . . . 1850, Flexion 4070 Fuseaux horaires.. , , 9410 Gegenschein 6720 4660 Geodesic . . 5050 0210 Grandeur apparente dea corps 4890 celestes . . 0105 8450 Gravitation universelle, Loi de. . 1050 4360 Gravite, Centre de 1200 0220 Perturbations de la 5100 7150 Heliometre 2050 ,3050 204U Heliostats.. 2050 (J030 Heure 9390 004') Histoire . . 0010 2020 Horizon, Depression de 1' 0210 Images 2040 8560 monochromatiques. Appa- 2050 reils pour 2270 2120 Institutions 0060 0350 Rapports d' 0020 48(J0 Instruments 20:^0 4210 auxiliaires . . 2100 4220 extra-meridiens 2080 ,3080 4230 meridiens . . 2070 ,3070 4220 portatifs 2090 2120 reglage des . . 3000 1560 Irradiation 3200 8050 0050 Jour 9350 4220 sideral 9360 solaire, mojen et vrai 9370 3200 Subdivision du 9390 9450 Jupiter 6000 -6090 1830 Satellites de 1520 ,6550 1R30 Spectre de . . 6090 ,6820 8100 Theorie et appl i cations 8080 nuineriques de. . .. 1320 7530 Kepler, Lois de . . 1110 7530 Latitude .. 0150, , 5100 1820 Variation de 5100 1820 Lentilles .. 2040 ,2050 6650 de correction 2120 7010 pour les observations spectroscopiques 2250 7040 d'agrandissement . . .. 2120 Lever 0150 7050 Libration des planetes et des 7120 satellites 1740 de la lune . . 1730 7160 Ligne meridienne. . 0150 7080 Lignes solaires brillantes . . 4560 Changement dans 7060 I'apparence des. . 4550 7140 Identification des, avec leiirs elements . . 4540 8550 telluriques dans le spectre 7520 solaire . . 4580 7020 Longitudes 0150, 5100 0280 Longueurs d'onde, Comparaison 8010 des, dans les difPerentes etoiles 8040 7600 des lignes pour 3220 les etoiles individuelles 8020 38 Lumiere cendree . . zodiacale . . . . . . 6720 Spectroscopie de la . . 6800 Lune 4800 ■ Atmosphere de la . • . . 4840 Cartes de la 4890 Configuration de sa surface 4830 ■ Constantes et dimensions de la 4820 Densite de la . . . . 4820 Dessins de la Distance de la Eclat de la . . Eclipses de . . InfluencedelajSurlespheno- menes terrestres Masse de la.. Observations de position de la Occultation par la . , Phases de la Photographies de la • Radiation de la Rotation de la Spectroscopie de la. . Temperature de la. . Theorie de la Manuels . . Marees, Theorie des Mars 5800- Distance de . . . . 4050, Occultations de . . 4870, Satellites de . , 1500, Spectre de . . . . 5890, Theorie et applications numeriqiies de. , Masses fluides en rotation, Figures de I'equilibre des Mecanique celeste Mercure 5600- Distance de . . 4050, Occultation de . . 4870, Satellites de. . . . 1480, Spectre de .. .. 5690, Theorie et application numerique de . . Meteores . . Spectroscopic des . . Micrometre pour les mesures de photographic spectrale 2260, pour observations vis-uelles 2260, Micrometres Miroirs 2040, Mois Montres . . Montures equatoriales Mouvement de la terre et des equinoxes. Correction pour le. . 4850 Mouvement orbital de trois corps, ouplus 1200 de deux corps . . 11 10 Musees 0060 Nebuleuses . . . . 1860, 7800 Spectroscopie des • . . . 8200 Neptune 6300-6390 Satellites de . . 1540, 6580 Spectre de . . . . 6390, 6820 Theorie et applications numeriques de. . . . . . 1350 4890 Niveaux 2100 4820 Nomenclature 0070 4850 Nutation de la terre .. 0260,1710 4860 Determination de la coc- stante de la . . . . . . 3320 4880 Objectifs 2040 4820 Observations, Reduction et recti- fication des . . . . 3030-3250 4810 spectroscopiques,Lentilles de 4870 correction pour . . . . 2250 4850 Observatoires . . . . 2000, 2010 4890 Construction des . . . . 2020 4850 Obturateurs 2120 4830 Occultation 0350 6810 par la lune 4870 4850 Oceans de la terre .. .. 1610 1400 Oculaires et accessoires . . . . 2120 0030 solaires 2120 1750 Orbites, Calcnl des . . 1120, 1820 -5890 Caractere des . . . . 1200 58,30 Correction des .. .. 1160 5870 periodiques 1200 6530 stellaires deduites des obser- 6820 vations spectroscopiques . . 8620 Parallaxe . . ' 0220 1300 annuelle. Correction pour la 0260 des etoiles fixes . . . . 7070 1600 solaire 4050 1000 stellaire deduite des obser- 5690 vations spectroscopiques . . 8630 5600 Passages de planetes, de gatel- 5670 lites 0350 6510 Pendules 2100 6820 de contr61e 2050 Pendulc, Observations de .. 5100 1260 Periodiques 0020 6650 Perles de Bailj 4340 6950 Perturbations generales . . .. 1250 speciales . . . . . . 1 590 3100 Petites planetes .. .. 5900-5990 Satellites des. . 1510, 6540 3100 Theorie et applications 2140 numeriques des . . . . 1310 2050 Phases de la lune .. .. 4850 9330 Phenomenes solaires. Connexion 2100 des, avec les phenomenes 2050 terrestres 4110 terrestres, influences 0240 cosmiques sur les .. .. 5300 39 E Phenom^nes terrestres, Influence de la lune sur les pendaot les eclipses . . Pliilosopliie Photographies celestes, Reduction des de la lune . . • des spectres stellaires du soleil Photographie spectrale, Micro- metre pour la . . stellaii'e Photometric Piles Planetes . . extra-neptuniennes 6400- Figure des . . Satellites des . . 1550, Spectroscopic des 6400, Theorie et applications numeriques des intra - mercurielles. Satel- lites des. . . . . . 1170, Theorie et applications numeriques des Orbites des. . Spectroscopie des .. 6800, Polarisation, Appareils de P61es, Mouvement des, sur la surface de la terre Porte-plaques photographiques. . Poussiere . . Precession, Correction pour la . . de la terre . . . , 0260, Determination de la con- stante de la Prismes, Combinaisons de objectifs Prix Protuberances Spectroscopie des . , Quadratures mecaniqiies. Appli- cation de la methode des Questions d'optique Radiation constante du soleil . . Radiometric Recherches spectroscopiques du soleil eclipse . . du soleil sans eclipse. . Recueils . . Reflecteurs et refracteurs, Coni- paraison des Refracteurs j)hotographiques 2040, visueis . . . . 2040, Refraction . . 0210, 3100, 3350, Reseau objectif . . Rotation du soleil. Determination de la, par les recherches spectro- scopiques troublee 4880 4350 0000 3250 48'JO 8450 4360 2260 7005 2400 2020 4780 ■6490 1640 6590 6820 1360 6500 1290 1130 6820 2300 1720 2120 5400 0260 1710 3320 2240 2210 0020 4070 4620 1590 2040 4200 2500 4650 4600 0030 2040 2050 2050 5400 2210 4640 1700 Satellites, Figure des . . . . 1660 Theorie des. . . . . . 1450 Saturne 6100-6190 Satellites et systeme d'an- neaux de . . . . . . 6560 Spectre de . . . . 6190, 6820 Saturne, Theorie du systeme d'anneaux et des satellites de 1460 Theorie et applications nu- meriques de . . . . . . 1330 Scintillation (vo?/. C 3210) .. 5400 Sextants -. 2090 Semaine . . . . . . . . 9340 Sieges d'observation . . . . 2020 Societes, Rapports de . . . . 0020 Soleil 4010 Atmosphere du . . . . 4070 Chromosphere du . . . . 4070 Constantes du . . . . 4030 Dessins du 4360 Eclat du 4200 Eclipses de 0350, 4000, 4210 4220 Figure du 1630 mouvement du . . . . 3320 Phenomenes periodiques de la surface du . . . . . . 4100 Photograpliiedu .. .. 4360 Position dti 4020 Radiationdu" .. .. 4200 Rotation du.. .. .. 4060 Spectroscopie du . . . . 4500 Spectroscopic des tfches du 4610 Taches du 4070 Temperature du . . . . 4200 Spectre solaire . . . . . . 4500 Distribution de I'ener- gie dans le . . . . . . 4570 ultra-roiige . . . . 4530 ultra-violet . . . . 4510 visible 4520 Spectres stellaires. Distribution des, dans le ciel . . . . 8140 • de I'energie dans les 8070 Etude de types speciaux des 8120 particuliers . . . . 8400 Spectrographes . . . . . . 2220 Spectroheliographe . . . . 2270 Spectrophotometrie . . . . 2400 Spectroscopes . . . . . . 2220 Spectroscopie de la lumiere zodia- cale 6800,6940 de la lune . . . . 6800, 6810 de la lune, des planetes, des cometes, de la lumiere zodiacale, de I'alniosphere terrestre . . 6800 40 Spectroscopic de Tatmosphere terrestre . . 4580, 6800, 6960 des amas d'etoiles . . . . 8200 des coDietes. . . . 6S00, 6920 des etoiles . . . . 7120, 8010 Tariables . . 8300 ' des meteores . . . . G950 des nebuleuses . . . . 8200 des planetes . . 6800, 6820 stellaire . . . . 8000-8630 Sphere celeste . . . . . . 0110 Stereo-comparateur .. .. 2140 Systemes binaires spectros- copiques . . . . . . 8600 multiples spectroscopiques 8600 eolaire, Constitution du .. 1770 Description du . . 4000 Mouvement du, dans I'espace.. .. .. .. 1840 Origine, stabilite et developpement du . . . . 1790 Theorie du . . . . 1100 Systemes stellaires . . . . 1860 Tables 0030 Construction de . . , , 1570 Telescope zenithal . . . . 2070 Temps, Definition du . . . . 9400 Equation du . . . . 9380 local 9410 Mesure du . . , . 9200, 9220 par zones (fuseaux horaires) 9410 Reglement du . . . . 9300 universel . . . . . . 9410 TeDtesdemontables,transportables Terre Atmosphere de la . . Figure de la Theorie et apjjlication numerique de la Theoi-ie planetaire Trace de I'ombre des eclipses solaires, Cartes de la . . Traites generaux . . Univers stellaire . . . . 1800, Milieu resistant dans 1' Structure de 1' Temperature de 1' Theorie de 1' . . Uranus 6200- 1530, 6290, Satellites d' Spectre d' . . Theorie et nunieriques de . . Venus Distance de. . Occult ation de Passage de . . ■ Satellites de Spectre de . . Theorie et numeriques de . . Verre, Fabrication du Vis, etc., erreurs des Voie lactee applications 5700- 4050, 4870, 4050, 1490, 5790, applications 2020 5000 5400 1610 1280 1250 4220 0030 7000 1830 1810 1830 1800 6290 6570 6820 1340 5790 5730 5770 5770 6520 6820 1270 2040 3220 7900 41 K INDEX zu (E.) ASTHONOMIE. Aberration . . . . 0250, 3100 Aberrationsconstanten . . . . 3310 Abflacliung des Himmelsgewolbes 0105 Abhandlungen, AUgemeine . . 0030 Aequatoreale . . . . . . 3010 Aeren . . . . . . . . 9450 Aether 1830 Almucantar . . . . 2080, 3080 Anstosse 0350 Astrolabien 2030 Astrologie 9050-9060 Atmosphare der Erde . . 5400, 6960 des Mondes . . . . . . 4840 Aufgang , . . . . . . . 0150 Bahnberechnung. . . . 1120, 1820 Bahnbewegung .. .. .. 1110 Bahnelemente, Verbesserung der 1160 Bahnen 1200,8620 Baily's Perien . . . . . . 4340 Bedeckungen . . . . . . 0350 Beobachtimgen Bericlitiguiig der Beobachtungsstuhle Beriihrunsfszeiten Reduktion und 3030- -3250 2020 4230 Besehreibende Astronomie 3290-8630 . . 0032 . . 0010 . . 2500 . . 0150 . . 5100 4630, 4700 . . 2100 9200-9450 . . 2100 . . 0210 Bibliographien . . Biographien Bolometrie Breite, Greographisclie . . Breiten-Yariation Chromosphiire 4070, 4300, Chronograi^hen . . Chronologie Chronometer Damiuerung Depression des Horizontes . . 0210 Diaph ragmen . . . . . . 2040- Dichte des Mondes . . . . 4820- der Sonne 4030 Doppelsterne . . 1820, 7500-7530 Spectroskopie . . 8560, 8600 Doublets, Photographische 2040, 2050 Drehthiirme 2020 Durchgiinge . . . . . . 0350 Durchmesser . . . . . . 0220 Ebbe und Fluth 1750 Eigenbewegung der Fixsterne . . 7060 in der Gresichtslinie 8500-8550 Entfernung des Mondes. . . . 4820 Ephemeriden, AUgemeine . . 0310 von Kometen . . . • 6600 von Sternen 7010 der Sonnenfinsternisse . . 4220 Erde . . . . 1280, 5000-5400 Figur 1610 Erdlicht 4850 Extraiiieridian-Instrumente 2080, 3080 Farbe der Doppelsterne . . . . 7520 der Fixsterne . . . . 7120 Farben-Kataloge der Fixsterne 7120 Festreden. . 0040 Finsternisse . . 0350, 4210, 4350 Fixsterne 7010-7160 Fixsternsystem .. .. 1800-1840 Gegenschein . . . . . . 6720 Geodiisie 5050 Geometrische Astronomie 0100-0350 Geschichte 0010 Gesellschaften, Berichte von . . 0020 Gleichgewichtsfiguren . . . . 1600 Gleichung, Personliche . . . . 3200 42 Gravitation . . . . . . 1050 Grraritationscentrum . . . . 1200 Grcisse der Gestirne, Sclieinbare 0105 Heliomcter . . . . 2050, 3050 Heliostate 2050 Himmelskugel 0110 Horizont, Depression des . . 0210 Institute 0020, 0060 ] nstruiiiente 2030, 2090, 2100, 2280, 3C00 Jahrbiicher 0020 Jupiter 6000-6090 Kalender 9420 Kataloge der Fixsterne . . . . 7030 Keppler'sche Gesetze .. .. 1110 Kometen 1130, 1680, 1780, 6600, 6920 Kongresse,Berichte Ton. . .. 0020 Konstanten. Astronomische 3300-3350 Kontrol-Pendel 2050 Koordinaten, Allgemeine . . 0110 Geocentrische und lielio- centrisclie . . . . . . 0300 Koordinatentransformation . . 0110 Korona . . . . 4070, 4240, 4660 Korrectionslinsen . . . . 2120 Kosmischer Einfluss auf ter- restrisclie Pharomene. Kosmogonie Kreise (Graduieren etc.) Lange, Geograpliisclie . Lelirbiiclier Linsen . . . . 2040, 2050, 2120 Libration 1730-1740 des Mondes. . Licbtkurren der Sterne Mars Masse des Mondes • der Sonne . . Meridian . . Meridiau-Instrumente Meridiankreise . . Merkur Meteore . , 1130, 1680, 6650, 6950 Mikrometer . . . . 2140, 3100 Milcbstrasse 7900 Momentverschliisse . . . . 2120 Monat 93.30 Mond . . . . 1400, 4800-4890 ■ auf der Korona . . . . 4340 5300 3290 2100 0150 0030 . . 4830 . . 7600 5800-5890 . . 4820 . . 4030 . . 0150 2070, 3070 2070, 3070 5600-5690 Libration . . 1730 ,4830 Spektroskopie . . 6800, 6810 Mondatmospbare. . 4840 Mondiinsterniss . • 4860 Mondjabr. . 9320 Mondkarten 4890 Mondoberflacbe . . 4830 Mondpbasen 4850 Mondrotation 4830 Mondtemperatur. . 4850 Museen 0060 Nebel 1860, 7800, 8200 Neptun 6300-6390 Neue Sterne . . . . . . 7600 Mreaux 2100 Komenklatur 0070 Nordlicbt 5400, 6960 Nutation 0260, 1710 Kutationskonstanten . . . . 3320 Objektire 2040 Objektivgitter 2210 Objektirprismen . . . . . . 2210 Okulare 2120 Okular-Spectroskope .. .. 2220 Ortsbestimmung, Instrumente zur 2080 OrtBzeit 9410 Piidagogik 0050 Parallaktiscb auf gestellte Instru- mente 2050 Parallaxe 0220 der Fixsterne . . . . 7070 Jabrlicbe 0270 Passageinstrumente . • . . 2070 Pendel-Beobacbtungen . . . . 5100 Pendelubren 2100 Periodica 0020 Personlicbe Gleicbung . . . . 3200 Pbasen des Mondes . . . . 4850 Pbilosopbie 0000 Pbotograpbiscbe Apparate .. 2130 Processe 3240 Photometrie 2400 Planetariscbe Xebel . . . . 7800 Planeten 1130,4780 Extra-neptunisebe. . 6400-6490 Figur 164« Intra-merkurielle . . . . 5500 Kleine ' . . . . 5900-5990 Spektroskopie von . . 6800, 6820 Verteilung im Sonnensystem 1780 Planetentheorie .. .. 1250-1550 Plattenbalter 2120 Polarisations-Apparate . . . . 2300 Polbewegung . . . . . . 1720 Portrait-Linsen ■ . . . . . 2050 Priizession . . . . 1710, 0260 Priizessionskonstante . . . . 3320 Praktiscbe Astronomic . . 1900-3250 Preisschriften 0020 Prismen-Kombinationen . . 2240 Protuberanzen . . . . • . 4320 Quadraturen . . . . • • 1590 Quecksilber-Hovizonte .. .. 2100 Kadiometrie . - • - • • 2500 Eeduktion auf den Erdmittel- punkt 0200 der Sternorter . . . . 0280 Eefraktion 0210, 3100, 3350, 5400 Kef raktoren . , . . 2040, 2050 Ringsystem des Saturn . . . . 1660 Rotation des Mondes . . . . 4830 der Sonne . . . . . . 4060 43 E Eotationsstorungen , . . . 1700 Stern-Stralilung . . . . 7140 Sammelwerke ,, . . 0030 Sternsystem, Aufbau des . . 1810 Sammlungen . . 0060 Sternverteilung am Himmel . . 7160 Satcllitea , 1450-1550, 1660 6500-6590 Stern warten 2000-2020 Saturn , , 6100-6190 Stfirungen der Soli were .. . . 5100 Schirnie . . 2040, 2120 Storungstlieorie, Allgemeine .. 1250 Schrauben, Fehler . . .. 3220 Strahliing der Fixsternc . . 7140 Sclnvere-Storungeii . . 5100 Strahlungskonstante . . 4200 Scintillation . . 5400 Stunden . . . . 93tt0 Sextaiite . . . . 2090 Tafelu . . 0030 Siderostate . . 2050 Tag 9350-9390 Sonne , , 4010-4750 Taschenuliren . , 2100 Figur . . 1630 Teilungen . . . . . , . . 3220 Sonnenatmosphare . . 4070 Temperatur des Mondes . , 4850 Sonuenbevvpgung. . . . 3320 der Sonne . . . . 4200 Sonnen-Fackeln .. , , 4070, 4620 des Weltraumes . . . . 1830 Fl,>oken . . 4070, 4100, 4610 Theoretisclie Astronomic 1000-1860 Sonnenjahr . . 9310 Triebwerke . . 2050 Sonncukorona . . 4070 Uhrgang .. . . 3010 Sonncnokulare , . . . 2120 Universal-Instrument . . 2080, 3080 Sonuonparallaxe . . . , 4050 Uniyersalzeit . . 9410 Sonuenpliotographien . . 4360 Untergang . . 0159 Sonnonspektrot>kope . . 2220 Uranus . . 6200-6290 Sonuenspektriim . . 4500-4750 Yenus 5700-5790 Sonucnsystem 4000-6960 Yerauderliche Sterne 7600, 8300 Sonnentafeln . . 1280 Terfinsterungszone . , 4220 Sonueutemperatur . . 4200 Vergleichs-Spektren, Erzeu gung Spektralpliotoinetrie .. . . 2400 von .. 2250 Spektrographen . . . . 2220 Yergrosserungslinsen . . 2120 Spektroheliographen . . 2270 Vertikalkreis . . 2080 Spektroskopische Apparate 2200, 2280 Yortrage . . . . 0040 Sphiirische Astronomic 0100-0350 Weltraum 1800-1840 Spiegel . . 2040 Widersteliendes Mittel . . . . 1830 Sterndurclimesser . . 7150 Wirkungsgrad von Instrumenten 2280 Sternenwelt 7000-8630 Woelie . . 9340 Sternliaufen 1860 7700, 8200 Worterbiielier . . 0030 Sternkataloge, AUgemeine . . 7030 Zeitgleicliung . . 9380 Doppelsterne . . 7520 Zeitmessung 9200-9220 nach Farben . . 7120 Zeitreclmung 9300-9450 Pliotometrische . . 7080 Zeitziihlung . . 9400 Teriinderlicher Sterne . . 7600 Zenitli-Teleskope . . 2070 Sternsclmuppen . . . . 6650 Zodiakal-Liclit . . 6720, 6940 Spektroskope . . 2220 Zonenbeobachtuugen . . 7030 Spektroskopie 8000-8630 Zouen-Zeit . . 9410 44 INDICE PER l' A S T R 0 N 0 M I A . ( E ) Aberrazione, Correzione per 1' Determinazione della c stante dell' per 2080, 2080, 1' atmosfera accordo Almueantar Altazimut. . Anno lunare ■ solare Anmiari . . Appulsi . . Assorbimento terrestre Astrolabi . . Astrologia. . Sottodiyisione con paesi e epoche Astronomia antica SottodiTisione in ac- cordo con paesi e epocbe pratica sferica teorica Atmosfera terrestre, Figura dell' Aurora Baily, Aghi di . . Bibliografie Binario, Sistema spettroscopico. . Biografia . . Bolometria Calendarii. . Cannocchiale zenitale . . Capanne portatili Carte della luna . . di spettri stellari . . Celostati Centro della terra, Eiduzione al Chiusura delle lastre f otografiche 0250 3310 30N0 3080 9320 9310 0020 0350 5400 2030 9050 9060 9000 9020 1900 0100 1000 1610 5400 4340 0032 8600 0010 4200 9420 2070 2020 4890 8450 2050 0200 2120 Cielo, Schiaccianiento apparente del 0105 Circoli (graduazione, ecc.) CoUezioni 0060 Comete 6600 e stelle cadenti, Legame fra 6700 Figura di 1680 Orbite di 1130 Comete, Spettroscopia di . . 6920 Comparazione, , Produzione di spettri di 2250 Congressi, Resoconti di . . . . 0020 Contatti, Tempi dei .. .. 4230 Coordinate eliocentricbe . . 0300 geocentriche . . . . 0300 loro trasformazioni e raria- zioni differenziali . . . . 0110 Corona 4240 air infuori degli eclissi . . 4070 e cromosf era . . . . 4300 Luna sulla 4340 Spettroscopia della, durante r eclisse . . . . . . 4660 Cosmica, Influenza, sui fenomeiii terrestri . . . . . . 5300 Cosmogonia . . . . . . 3290 Costante dell' aberrazione, Deter- minazione della . . . . 3310 della precessione e nutazione, Determinazione della . . . . 3320 Costanti astronomiclie, Deter- minazione di per mezzo di osservazioni . . . . . . 3300 Crepuscolo . . . . . . 0210 45 E Cromosfera . . 4070, 4300, Spettroscopia della, durante 4320 I'eclisse . . . . 4700 senza eclisse . , 4630 Cronografi . . 2100 Cronometri . , 2100 Cupole . . 2020 Diafragmi. . . . 2040 Diametri stellari . . .. 7150 Diametro . . . . 0220 Discorsi . . . . 00 10 Disegni della luna . . 4890 del sole . , 4360 di spettri stellari . . . . 8450 Distribiizione di pianeti e coniete 1780 Diziouari . . . . 0030 Eclissi . . 0350 luuari . . . . . . 4860 solari . . 4210 Effemeridi degli . . 4220 Osservazioni degl . . 4230 Predizioni degli . . 4220 Effemeridi, Calcolo di . . 0310, 4220 di Stelle . . 7010 di Stelle doppie . . 75m Eliometro . . 2050, 3050 Eliostati . . . . 2050 Elemeuti, Correzione di. . . . 1560 delle stelle, Identificazione degli . . 8050 Equatoriali, Montature . . . , 2050 Equazioni personal! . . 3200 Ere . . 9450 Etere . . 1830 Extra-meridiani, Strumenti 2080, 3080 Extra-lVettuniani, Pianeti 6400-6490 Satelliti di 1550, 6590 Teoriaenumerica applicazione dei . . 1360 Facole . . 4070 Spettroscopia di . . 4620 Filosofia . . . . 0000 Flessione . . . . 3220 Fotografici, Apparati . . 2130 ■ — doppi . . 2040, 2050 Fotometria . . 2400 Cregeuscliein . . 6720 G-eodesia . . . , 5050 Giorno . . 9350 Suddivisione del . . . . 9390 siderale . . 9360 solare, medio e vero . . 9370 Giove 6000-6090 Satelliti di . . 1520, 6550 Spettro di . . 6090, 6820 Teoria e numerica applica- zione di. . . . 1320 Grandezza apparente dei cor^ii celesti , . . . 0105 Gravitil, Centro di . . . . 1200 Deviazioui della . . . . 5100 Gravitazione universale, Legge della 1050 Gruppi, di stelle . , . . 1860, 7700 Spettroscopia di . . 8200 Illurainazione del campo visuale 2120 Immagiui . . . . . . . . 2040 Intra-Mercuriali, Pianeti . . 5500 Satelliti di 1470, 6500-6590 Tstituti 0060 Resoconti di . . . . 0020 Kepler, Leggi di . . .. .. 1110 Lastre fotografiche, Custodia per le 2120 Latitudine . . . . 0150, 5100 Variazione di . . . . 5100 Lenti 2010,2050 di correzione . . . . 2120 amplificanti. . . . . . 2120 Letture 0040 Levare e tramontare . . . . 0150 Librazione di pianeti e satelliti 1740 della luna 1730 Linee lucenti solari . . . . 4560 solari, Identificazione delle, con elementi . . . . . . 4540 Mutamenti apparenti delle . . . . . . . . 4550 LiTclle 2100 Longitudine . . . . 0150, 5100 Luce cinerea . . . . . . 4850 Luna 4800 Atmosf era della . . . . 4840 Carte della 4890 Configurazione della super- ficie della 4830 Costanti e dimensioni della 4820 Densit.a della . . . . 4820 Disegni della . . . . 4890 Distanza della . . . . 4820 Eclissi della . . . . 4860 Pasi della 4850 Fotografie della . . . . 4890 Influenza della, su f euomeni terestri 4880 Massa della 4820 Occultazioni dalla . . . . 4870 Osservazioni della posizione della 4810 r- Radiazione della . . . . -1850 ■ — — Rotazione della . . . . 4830 ■ Spettroscopia della . • 6810 Splendore della . . . • 4850 Temperatiu'a della. . . . 4850 Teoria della . . . . 1400 Lunghezze d' onda, Confronto di, in different! stelle. . . . 8040 d' onda di linee per singole stelle 8020 46 ilanuali . . 0030 Ombra di eclissi solari, Carte Maree, Teoria delle 1750 deir andamento dell' . . 4220 Marte 5800- -5890 Orbite, Calcolo di 1120, 1820 Occultazione di . 4870, 5870 Carattere delle 1200 Satelliti di . . 1.500. 65.30 Correzione di 1160 Spettro di . . 5890, 6820 periodiclie . . 1200 Teoria e nuuierica applica- Stellari da osserTazioni zione di. . 1300 gpettroscopiche 8620 Meccanica celeste 1000 Ore 9390 Meccaniche quadrature, Metodo Orizzonte, Depressione dell' 0210 di .. .. 1590 Orologi 2100 Mercurio . . 5600 -5690 Osservatorii 2000, ,2010 Occultazione di . 4870. 5670 Edifizii per . . 2020 Satelliti di . . 14S0, 6510 OsserTazioni, Riduzione e retti- Spettro di . . . 5690, 6820 fica di . . 3030 -3250 Teoria e niunerica applica- Ottici, Soggetti . . 2040 zione di. . 1260 Palclii montanti . . 2020 Meridiani, Strumenti 2070 Parallasse . . 0220 Meridiana, Linea 0150 annua, Correzioni per delle stelle fisse la .. 0270 7070 Mese 9330 solare 4050 Meteore . . 6650 stellare da osserrazioni Spettroscopia di 6950 spettroscopiclie 8630 Meteorici, Figura di sciami 1680 Passaggi . . 0350 Orbite di sciami . 1130 Circolo dei . . 2070 ,3070 Micrometri 2140 Pedagogia. . 0050 Micrometro per misurare spettri Pendolo, Osserrazioni col 5100 fotografici 2260 , 3100 Pendoli di controUo 2050 per osserrazioni yisuali 2260, , 3100 Periodici . . 0020 Monocromatiche immagini, Ap- Perturbazioni generali . . 1250 parato per 2270 speciali 1590 Mostre 2100 Pianeti 1130 ,4780 Moto della terra e degli ( equinozi, Figura dei . . .. 1640 Correzione per il . 0240 Orbite dei . . 1130 Motori 2050 Spettroscopia dei . . 6800 ,6820 MoTimento orbitale di tre o piii Pianetini . . 5900 -5990 corpi 1200 Satelliti dei. . 1510,6540 di due corpi . 1110 Teoria e numerica appiica- Multiple, Stelle . . . . 7510, Multipli, Sistemi spettroscopici ,7520 8600 zione di. . Pilastri Planetaria. Teoria 1310 2020 1250 Musei ,. 0060 Polarizzazione, Apparati per la 2300 Nebulose . . 1860 ,7800 Poll, Morimento dei, sulla s mper- Spettroscopia di 8200 ficie terrestre . . 1720 If ettuno . . '. '. 6300 -6390 Polvere 5400 Satelliti di . . 1540 ,6580 Precessione, Correzione per la.'." 0260 Spettro di . . 6390 ,6820 Determinazione della , cos- Teoria e numerica . applica- tante della 3320 zione di. , 1350 della terra . . 0260 ,1710 If omenclatura 0070 Premi 0020 Ifutazione, Determinazione della Prisma obiettivo . . 2210 costante della . . 3320 Prismi, Combinazioni di 2240 della terra . . 0260 ,1710 Eaccolte . . 0030 Obiettivo, Prisma . . 2210 Eadiazione del sole, Costante Occultazioni . . 0350 della 4200 dalla luna . . . . 4870 Kadiometria 2500 Oceani terrestri, Figura degU .. 1610 Reticolato, Oggettivo con 2210 Oculari e accessorii .. 2120 Riflettori e rifrattori, Confronti Oggettixi . . 2040 fra 2040 Oggettiyo con reticolato . . 2210 Rifrattori fotografici 2040 ,2050 47 E Rifrivttori visuali . . 20t0, 2050 Rifrazione 0210, 3100, 3350, 54U0 Rotazione, Figure di equilibrio di masse fluide in . . . . 1600 del sole, sua determinazione dalla spettroscopia . . . . 4640 perturbata 1 700 Satelliti, Figura dei . . . . 1660 Teoria dei . . . . . . 1450 Saturno 6100-6190 Satelliti e sistema anulare di 6560 Spettro di . . . . 6100, 6820 Teoria dei satelliti e del sistema anulare di . . . . 1460 Teoria e numerica applica- zione di 1330 Schermi 2040,2120 Seintillazione . . . . . . 5400 Sedie per osservare . . . . 2020 Settimana . . . . . . . . 9340 Sestanti 2090 Sfera celeste 0110 Societa, Kesoconti di . . . . 0020 Solare, Costituzione del sistema 1770 Descrizione del sistema . . 4000 Moto del sistema, nello spazio 1840 Moviments 3320 Origine, stabilita, sviluppo, del sistema . . . . . . 1790 Teoria del sistema . . . . 1100 Solari e terrestri fenomeni, Legami tra . . . . . . 4110 Sole 4010 Atmosf era del . . . . 4070 Costanti del . . . . 4030 Costante della radiazione del 4200 Cromosf era del . . . . 4070 Disegni del 4360 Eclissi del 0350, 4210, 4220, 4230 Fenomeni periodici della superficie del . . . . . . 4100 Figura del 1630 Fotografie del . . . . 4360 Macchie del . . . . 4070 Posizione del . . . . 4020 Rotazione del . . . . 4060 Spettroscopia del . . . . 4500 delle macchie del . . 4610 Splendore del . . . . 4200 Temperatura del . . . . 4200 Speech! 2040, 2050 Spettri di comparazione, Produ- zione di. . . . . . . . 2250 fotografici, Micrometro per misurare . . . . . . 2260 stellari, fotografie di . . 8450 loro distribvizione in cielo 8140 Studio di speciali tipi di 8120 speciali . . . . 8400 Spettro Solare . . . . 4500-4750 Distribuzionedienergia nello 4570 linee nello . . . . 4540 solare ultra-rosso . . . • 4530 — — — ultra-violetto. . . . 4510 visibile . , . . 4520 — stellare, Distribuzione di energia nello . . . . . . 8070 Spettroeliografo 2270 Spettrofotometria . . . . 2400 Spettrografi . . . . . , 2220 Spettroscopi . . . . . . 2220 Spettroscopia dell' atmosfera terrestre .. 4580, 6800, 6960 delle comete . . 6800, 6020 di gruppi di stelle . . . . 8200 della luce zodiacale 6800, 6940 della luna .. .. 6S00, 6810, della luna, dei pianeti, delle comete, della "uce zodiacale, deir atmosfera tei-restre . . 6800- . . 6950 . . 8200 6800, 6820 . . 4500 7120, 8010 . . 8300 8000-8630 4750 2250 4650 4600 delle meteore di nebulose . . dei pianeti . . del sole ed eclisssi delle stelle . . di stelle variabili stellare Spettroscopiche, Fisica costitu- zione del sole dedotta da osser- vazioni . . Lenti correttive per osserva- zioni ■ Ricerche, del sole durante r eclisse. . suUa superficie del sole durante 1' eclisse . . Spettroscopici, Apparati. . 2200, 2250 ■ Teoria e rettifica di . . 2280 Stellare, Uniyerso . . 1800, 7000 Mezzo resistente nell' 1830 Struttura dell' . . 1810 Temperatura dell' . . 1830 Teoria dell' . . . . 1800 Stellari, Sistemi . . . . . . 1810 Stelle, Classificazione di. . . . 8100 Correzione per la riduzione di 0280 Costituzione fisica delle . . 8080 ; Gruppi di 7700 loro moto variabile nella direzione della visuale . . 8550 Movimentidi, nella direzione della visuale . . . . . . 8500 Spettroscopia delle. . 7120, 8010 cadenti . . . . . . 6650 doppie . . 1820, 7500-7530 — effemeridi di . . . . 7010 Cataloghi di posizione 7030, 7040 48 Stelle Colore di . 7120 Terra, Teoria e numerica applica- Comparazione di cataloglii zione della . . 1280 di posizione . 7050 Terrestre, Spettroscopia deir Distribuzione in cielo . 7160 atmosfera 4580, 6960 Grrandezza di . 7080 Terrestri, Influenza della luna Moto proprio di . . . 7060 su f enomeni . . 4880 Osservazioni di posizione . . 7020 ■ fenomeni, Legame fra Kadiazione di . 71-40 solari e . . . . 4110 multiple . . 7500, 7c )10, 7520 durante I'eclisse . . 4350 Tariabili . . . . 1850, 7600 Tramontare . . 0150 Stereocomparatore . 2i40 Trattati general! . . . . 0030 Storia . . . . ., . 0010 Universo, Temperatura dell' . . 18.30 Strumenti . . . 2030 Urano 6200-6290 Aggiustamei to di .. . 3000 Satelliti di . . 1530, 6570 ausiliari . 2100 Spettro di . . 6290, 6820 portatili . 2090 Venere 5700-5790 Tavole . 0030 Distanza di . . 4050, 5730 Costruzione di . 1570 Oceultazioni di 4870, 5770 Telluriehe, Linee, nello spetti 0 Satelliti di . . 1490, 6520 solare . . . 4580 Spettro di . . 5790, 6820 Tempo, Equazione del . . . 9380 Teoria e numerica applica- locale . 9410 zione di. . . . 1270 Mi sura del . . . 9200 Transiti di . . 4050, 5770 Metodi di misurare il . 9220 Verticale, Circolo . . 2080 Modo di contare il. . . 9400 Vetri, Manifattura di . . .. 2040 • Kegolarizzazione del . 9300 Via Lattea .. 7900 universale . . . 9410 Visuali, Osservazioni spettro- per f usi . 9410 scopiche di doppie stelle . . 8560 Terra . 5000 Viti, ecc, Errori di . . 3220 Atmosfera della . 5400 Zodiacale, Luce . . . . 6720 Figura della . 1610 Spettroscopia della . . 6940 49 AUTHOR CATALOGUE. Abbot, C[liailes] C![reeley]. Report oil the Astropliysical observatory. Washiiiytoii, n.C., Smithsonian Inst. I!ep., 1909. 1910, (G-1 -GO, with pis.) ; 1910,1911,(73-76). [2010]. 18490 On tlie temperatures of stars. Astropli. J., Chicago, III., 32, 1910, (319-321). [8080J. 18491 Recent bolograpliic results from the Astroiihysical oliservatory at Washington. [Abstract.] Pub. Astron. Aetroph. Soc. Anier., Ann Arltor, Mich., 1, 1910, (fi6-68). [4530]. 18492 The soLir constant of radi- ation. [i\ddress to the Solar Union Conference at the Mount Wilson Solar Observatory, California, Wednesday evening, Aug. 31, 1910.] Washington, D.C., Smithsonian Inst. Rep., 1910, 1911, (319-328J; Manchester, Trans. I.U.S.R., 3. 1911, (201-215) ; The sun's energy-spectrum and temperature. Astroph. J., Chicago, 111., 34, 1911, (197-208, Avith fig., tabs.). [4200 4500 5400]. 18494 The brightness of the sky at night as observed on Mount Whitney. Astr. J., AUjany, N.Y., 27, 1911, (20-24, with tabs.). [1800 5400]. 18495 Untersuchungen iiber die Solarkonstante am astrophysikalischen Oljservatorium der Smithsonian Institu- tion. Met. Zs., Braunschweig, 28, 1911, (114-118). [4200]. 18496 The silver disk pyi-helio- meter. Washington, D.C., Smithsonian Inst. Misc. Collect. Q., 56, No. 19 (Pub. 2008), 1911, (1-10, with pi. tab.). [2500]. 18497 The sun. New York and London (Appletou), 1911, (i-xxv., 1-448, with ff., pis., tabs.). 20 cm. id. 1912, (xxvi-H448). 20 cm. 78.6d.net. [4010 4500]. 18498 (E-2987) Abbot, C[harles] 0[reeley] and Ald- ricb, L. B. The pyrheliometric scale. Astroph. J., Chicago, 111., 33, 1911, (125-129). [2500]. 18499 and Fowle, F[rederick] E[ugene], jnn. Note on the reflecting power of clouds. (Addenda to Aun. Astroph. Oljs., Smithsonian Institution, 2.) Washington, D.C., 1908, (3, with fig.). 23 cm. [4200 5400]. 18500 The value of the solar constant of radiation. Astroph. J., Chicago, 111., 33, 1911, (191-196, with talis., diagr.). [4200]. 18501 Abell, E. W. Meteors from Halley's comet on May 6. Pop. Astr., Northfield, Minn., 18, 1910, (422-424). [6700]. 18502 Abetti, A[ntonio]. Osservazioni ad Arcetri di asteroidi. Astr. Nachr., Kiel, 187, 1911, (89-94); 188, 1911, (405-410). [5910]. 18503 Cometa 1910b (Metcalf). Astr. Nachr., Kiel, 187, 1911, (171-176). [6600]. 18504 Cometa di Faye 1910e. Astr. Nachr.. Kiel, 187, 1911, (443- 18505 Nuova variabile 44.1911 444). [6600]. Cvgni. Astr. Nachr., Kiel, 189, 1911, (343-344). [7600]. 18506 Nota. [KometFave 1910e.] Astr. Nachr., Kiel, 189, 1911, (367-368\ [6600]. 18507 L'Observatoire astrono- niiqued' Arcetri. Ciel etTerre, Bruxelles, 1909, (312-319). [2010]. 18508 Abetti, G[iorgio]. (635) [1907 Z S]. [Korr. d. Ephem.] Astr. Nachr., Kiel., 187, 1911, (367-368). [5910]. 18509 Misure di stelle doppie. Astr. Nachr., Kiel, 188, 1911, (21-30). [7510]. 18510 50 Abetti, ri[iorgio] and Smitli, Ruth Emily. Photographic observations of prominences. Astroph. J., Chicago, 111., 33, 1911, (141-160, with tabs., fig.). [4630]. 18511 Abold, W. Zur Breitenbestimmung nach der Methods von Pjewzow. Astr. Xachr., Kiel, 189, 1911,(11-14). [0150]. 18512 Adams, Walter S[j-dney]. The orbit of the spectroscopic binary tj Oriouis. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (186- 187). [8620]. 18513 Some results of a study of the spectra of Sirius, Procyon, and Arcturus with high dispersion. Astroph. J., Chicago, 111., 33, 1911, (64-71, with tabs.). [8080]. 18514 and Lasby, Jennie B. An investigation of the rotation period of the sun, by speclioscopic methods. [With bibliographv.] Wasiiington (Car- negie Inst. Pub. *Xo. 138j, 1911, (iii + 132, with ff., pis., tabs. J. 29.5 cm. ; [ab- stract] Nature, London, 88, 1912, (112- 113j. [4640]. 18515 Adams, "Walter S. v. Frost, E. B. ; Gale, H. G. Aitken, R[obert] G[rant]. The defini- tion of the term double star. Aetr. Xachr., Kiel, 188, 1911, (281-294). [7500]. 18516 One hundred new double stars. Seventeenth list. Berkeley, Univ. Cal. Pub. Lick Obs. Bull., No. 188, [1910], (70-72). [7520]. 18517 Observations of Comet e 1909 (Daniel;. Berkeley, Univ. Cal. Pub. Lick Obs. Bulk, No. 189, [1910], (73). [6600]. 18518 Observations of Comet a 1910. Berkeley, Univ. Cal. Pub. Lick Obs. Bull., No. 189, [1910], (74). [6600]. 18519 Observations of Hallej^'s comet. Berkeley, Univ. Cal. Pub. Lick Obs. Bull., No.' 189, [1910], (74-75 j. [6600]. 18520 Note on the masses of visual binary stars. Pop. Astr., North- field, Minn,' 18, 1910, (483-486, with tabs.). [7530]. 18521 • Note on the parallax of Nova Persei. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (153). [7600 7070]. 18522 Aitken, R[obert] G[rant]. On the dis- covery of 3()0 double stars. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (174). [7500]. 18523 Distribution of double stars in the zone+56'' to +90°. [Ab- stract.] Pub. Astron. Astropli. Soc. Amer., Ann Arbor, Mich., 1, 1910,(263- 264J. [7520]. 18524 The Lick double-star sur- vey— A report of progress. [Abstract] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (332;. [7500]. 18525 Notes from Pacific Coast observatories. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (29-31). [6600]. 18526 A review of the recent observations of Mars. [Abstract.] San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (78-87, with pi.). [5840]. 18527 New double stars. San Francisco, Cal., Pub. Astr. Soc. Pac, 22,1910,(95-96). [7510]. 18528 Visual observations of Halley's comet, January — May, 1910. San Francisco, Cal., Pub. Astr. Soc Pac, 22,1910,(134-136). [6600]. 18529 Note on the double star 02 251. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (140-141). [7510]. 18530 (iiovanni Virginio Schia- parelli. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (164-165, with pi.). [0010]. 18531 Observations of Comet c 1911 (Brooks). Berkeley, Univ. Cal. Pub. Astr., Lick Obs. Bull, 6, (No. 202), [1911], (159). [6600]. 18532 Aitken, W. E. v. Young, R. K. Akesson, 0. A. An astronomical method for determination of icedrift in the neighbourhood of the Pole. Ark. Matem., Stockholm, 6, No. 40, litll, (II, with 1 fig.;. [0150 5050]. 18533 Ober eirie symmetrische Form der analytischen Losung des Bahnbestimmungsproblems. Ark. .Ma- tem., Stockholm, 7, No. 18, 1911,(24). [11201. 18534 Albrecbt, F. Nova 137.1910 Laeer- tae. Astr. Nachr., Kiel, 190, 1912, (23- 26). [7600]. 18535 51 Albrecht, Sel)astian. Relation between stellar spectral types antl the intensities of certain lines in the spectra. [Ab- sti-act.] Pub. Astron. Astroph. Soc. Anier., Ann Arbor, Mich., 1, J 9 10, (272- 273). [8100]. 18536 Distortions of ]jhotographic films on glass. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (275-276). [3250J. 18537 Note on the apparent wave- lengths of lines in the different spectral types and in certain variable stars. [Alistract.] Pub. Astron. Astroph. Soc. Anier., Ann Arbor, Mich., 1, 1910, (335). [8040 8300]. 18538 • A radial velocity of Comet a 1910. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (143-145). [fiCOO]. 18539 • On a quantitative method for determining the spectral types of the brighter stars. Astroph. J., Chicago, 111., 33, 1911. (130-140, with tabs., text fig.). [8100]. 18540 V. Campbell, W. W. Albrecht, Th[eodor]. Provisorische Resultate des internationalen Breiten- dieiistes auf dem Nordparallel in der Zeit von 1910.0 bis 1911.0. Astr. Nachr., Kiel, 188, 1911, (265-268, mit 1 Taf.). [5100]. 18541 Bericht iiber die Langen-, Breiteii- iind Azimutbestiramungen, er- stattet vom Zentralbureau. Verb. Conf. Erdm., Berlin, 16, (1909), 1911, Tl 2, (126-183). [5100]. 18542 und Wanacli, B[ernhard]. Re.sultate des Internationalen Breiten- dienstes. Bd 4. Veroff. Centralbnr. Erdm., Berlin, N. F., No. 22, 1911, (IV + 276, mit6Taf.). [5100]. 18543 Aldrich, L. B. v. Abbot, C. G. 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Brit. Astr. Ass., 22, 1912, (151- 152). [6720]. 18813 62 Bums, Gavin J. Measuring the luminosity of the skv. Lontlon, J. Biit. Astr. Ass., 22, 1912, (233j. [26001 18814 Bums, Keiviii. The color of the stars in the great nebula in Orion. San Fran- cisco, Cal., Pub. Astr. Soc. Pac, 22, 1910,(185-188). [7120]. 18815 The s|3ectrum of the ring nebula in Lj-ra. Berkeley, Univ. Cal. Pub. Astr., Lick Obs. BulL, 6, (Xo. 193), [1911 J, (92-94, with pi.;. [8200]. 18816 Burrau, Carl. Thorvald Nicolai Thiele. Nekrolog . . . Leipzig, VierteljSchr. astr. Ges., 46, 1911, (208- 210, mit 1 Portr.j. [0010]. 18817 Burton, H. E. v. Frederickson, M. ; Hall, A. Burton, V. v. Deslandres, H. Butler, Charles P. The total solar eclipse April 28,1911. Nature, London, 86, 1911. (313j. [4210]. 18818 The turret equatorial re- fractor : a new combined telescojDe and dome. Observatory, London, 35, 1912, (83-85). [2030]. " 18S19 Buttlar, von. Bedeckung des Scliat- tens des 1. Jupitertrabanteu durch den Trabanten selbst. Astr. Xachr., Kiel, 189, 1911,(359-362). [6550]. 18820 Campbell, Leon, compiler. Approxi- mate magnitudes of variable stars. Pop. Astr., Northfieki, Minn., 18, 1910, (58- 60, 12.3-125, 187-188, 249-251, 311- 313. .^,80-382, 434-435, 508-509, 567- 568, 630-632j. [7600]. 18821 Campbell, W[illiam] W[allace]. Note on radial velocities of nebulae. Astr. Xachr., Kiel, 188, 1911, (345-346). [8200 8500]. 18822 The yarial)le velocity of Polaris in the line of sight. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (80-81). [8600]. 18823 The spectroscopic binarj- Capella. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Ai-bor, Mich., 1,1910,(81). [8600]. 18824 The spectrographic de- termination of the motions of the stars in the line of sight. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910. (112-114;. [8500]. 18825 Some peculiarities in the stract.] Pub. .Astron. Astropli. Soc. Amer., Ann Arbor, Mich., 1, 1910,(114- 116). [8550]. 18826 Campbell, W[illiam] W[allace]. A description of the second (Chile; Mills spectrograph. [Abstract.] Pub. Asti-on. Astroj^h. Soc. Amer., Ann Arbor, Mich., 1,1910,(162-163). [2220]. 18827 Four new spectroscopic binaries. [Abstract.] Pub. Ahtron. Astroph. Soc. Amer., Ann Arbor, .Mich., 1. 1910, (173). [8600]. 18828 The D. 0. Mills expedition. [Abstiact.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (202- 203). [2010]. 18829 Observations of the total solar eclipse of January 3, 1908. [Ab- stract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (212). [4240 4650]. 18830 Report of progress on the radial velocity progi-am of the Lick observatory. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, ilich., 1, 1910, (331-332). [8500]. 18831 Xote on the radial velocity of Polaris. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (35). [8560]. 18832 Xote concerning the radial velocity of Procvon. San Francisco, Cal,. Pub. Astr. Soc. Pac, 22, 1910,(35- 36). [8560]. 18833 A study of spectroscopic binary stars. [Abstract.] San Fran- cisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (47-63, with tabs.). [8600]. 18834 Historical note. [Comet observed at Volcano observatory, Cali- fornia, June 30, 1861.] San Francisco. Cal., Pub. Astr. Soc. Pac, 22, 1910, (105-1061. [6600J. 18835 Sir William Huggins, radial velocity of f Geminonun. [Ab- — oo » K.C.B., O.M. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (149-163, with pi.) ; [reprint after author's revision] Washington, D.C., Smithsonian Inst. Rep., 1910, 1911, (307-317, with pL). [OOIOJ. 18836 Gift of meteorite to the Lick observatory. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (189). [6650]. 18837 [Lick observatory report.] San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (216-241). [2010]. 18838 63 CampbeU, W[i]]i:iin] W[allace]. On the luolioiiM of the brighter cUiss B stars. Berkeley, Univ. t'al. Pub. Astr. f-ick Oba. ]5ull., 6, (No. 11)5;, [1911], (101-12-1, with fig.). [1810 1840 7160 «500]. ' 18839 Some peculiarities in the motions of the stars. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6, (No. 19(5), [1911], (125-135, with tabs.). [1840 8500 8630 7060 3290]. 18840 Note on the spectrum of 25 Orionis. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6. (No. 199), [1911], (153). [8400]. 18841 Note on the radial velocity of y Piscium. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6, (No. 199). [1911], (153). [8550]. 18842 Errata in second catalogue •of specti'oscopic binary stars. Bei keley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6, (No. 199), [1911], (154). [8600]. 18843 and Albrecht, Sebastian. On the spectrum of Mars as photographed with high dispersion. San Francisco, €al., Pub. Astr. Soc. Pac, 22, 1910, (87- 90). [6820]. 18844 et alii, Committee. (Sixty- eighth) Award of the Donolioe comet- medal. [To Mr. Zaccheus Daniel.] San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910,(93). [0020]. 18845 Campos Rodrigues, C. A. Portuguese standard time. Observatory, London, 34, 1911, (305). [9410]. 18846 [Cannon, Annie Jump]. Nova Sagit- tarii 3. Harvard college observatory cir- cular 163. Astr. Nachr., Kiel, 188, 1911, (77-78, mit 1 Taf.). [7600], 18847 6 neue Veranderliche. [17. 1911 Cassiop., 18. 1911 Aurigae ; 19. 1911 Geminor.; 20. 1911 Ophiuchi ; 21. 1911 Sagittarii; 22. 1911 Sagittarii.] Astr. Nachr., Kiel, 188, 1911, (259-260). 17600]. 18848 Classification of 1688 southern stars by means of their spectra. Cambridge, Mass., Ann. Obs. Harvard Coll., 56, [1910], (115-164, with tabs.). {8100]. 18849 Variations of the bright hydrogen lines in stellar spectra. {Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, ilich., 1, 1910,(216- 218). [8010]. 18850 [Cannon, Annie Jump.] Maxima and minima of variable stars of long period. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (235- 236J. [7600]. 18851 A variable star whose light curve resembles that of R Coronje Borealis. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (319). [7600]. 18852 Williamina Paton Fleming. Science, New York, (N. Ser.j, 33, 1911, (987-988). [0010]. 18853 Cape of Good Hope Royal Observatory V. Green wicii Royal Observatory. Cardoen, R. Hoe moeilijke vraag- stukken eenvoudig door de sterrekundi- gen worden opgelost. [How difficult problems are solved by astronomers in a simj^le manner.] Nieuwe wegen, 1910, (78-79). [1000]. 18854 Carrigan, William T[homa8]. Terms of the second order in the mean longi- tudes of Mars and the earth that have the argument 3J— 8M-t-4E. Astr. J., Albany, N.Y., 26, 1910, (167-170). [1300], 18855 The long period term in the mean longitude of the moon with the argument 3J— 8M-f4E. Astr. J., Albany, N.Y., 27, 1911, (26-28). [1400]. 18856 Celoria, Giovanni. Giovanni Virginio Schiaparelli. Nekrolog. Leipzig, Vier- teljSchr. astr. Ges., 46, 1911, (2-17, mit 1 Portr.). [0010]. 18857 Coraski, \V[itold]. Trois variables nouvelles. [2. 1911 Lyucis ; 3. 1911 Cancri; 4. 1911 Cancri.] Astr. Nachr., Kiel, 187, 1911, (77-78). [7600]. 18858 Trois variables nouvelles. [6. 1911 Trianguli; 7. 1911 Piscium; 8. 1911 Piscium.] Astr. Nachr., Kiel, 187, 1911, (159-160). [7600]. 18859 Deux variables nouvelles. 1 10. 1911 Lyncis; 11. 1911 Persei.] Astr. Nachr., Kiel, 188, 1911, (13-14). [7600]. 18860 Deux nouvelles variables. [12. 1911 Persei, 13. 1911 Persei,] Astr. Nachr., Kiel, 188, 1911, (31-32). [7600]. 18861 ■ Une nouvelle variable 16. 1911 Trianguli. Astr. Nachr., Kiel, 188, 1911, (117-118). [7600]. 18862 64 Ceraski, W[itold]. Une noiivelle variable 23. 1911 Persei Asti". Nachr., Kiel, 188, 1911,(215-216). [7600]. 18863 Deux nouvelles variables [47. 1911 Coronas borealis ; 48. 1911 Pegasi]. Astr. ISTachr., Kiel, 190, 1912, (31-32). [7600]. 18864 uud Ichinolie, Xaozo. Neue Verauderliche. [24. 1911 Oriouis ; 25. 1911 Tauri; 26. 1911 Tauri ; 27. 1911 Cygiii.] Astr. Nachr., Kiel, 188, 1911, (293-294). [7600]. 3S865 iind Pracka, Ladislaus. Mitteiluiigen iiber Verauderliche. [49. 1911 Coronae borealis ; 50. 1911 Caiiuiu venaticorum ; 59. 1911 Andromedae.] Astr. Nachr., Kiel, 190, 1912, (85-88). [7600]. 18866 Cerulli, V[iiiceiizo]. Uber Mars- Kaiiiile. Ausziia; . . . Astr. Nachr., Kiel, 189, 1911, (435-436). [5840]. 18867 Efemeridedelpianeta (704) luteramuia. Astr. Nachr., Kiel, 190, 1912, (161-162). [5900]. 18868 imd KUstner, F[riedrich]. Neuer Veranderlicher BD + 50° 2999 = 88.1911 Cygni. Astr. Nachi., Kiel, 190, 1912,(163-164). [7600]. 18809 Chamberlin, Thomas Chrowder. The future habitaljility of the earth. [Revision of presidential address before the American Association for the Advance- ment of Science delivered at Boston, Dec. 27, 1909.] Washington, D.C., Smithsonian Inst. Rep., 1910, 1911, (371-389). [0040]. 18870 Chamtiera, G[eorge] F[rederick] I.es cometes perdnes. Ciel et 'Terre, Bruxelles, 1909, (382-388, 408-410). [6600J. 18871 Champreux, A. J. v. Crawford, R. T. Chandler, S'^eth] C[arlo]. The prob- able value of the constant of aberration. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910,(192). [3310]. 18872 Charlier, C[arl] V[ilhelm] L[udwig]. Cber die Bewegung der Bahnebenen der Satelliten in unserem Planetensystem. Lund, Univ. Arsskr., N.F., 4, No. 4 [ = Fvsiogr. Sallsk. Handl., N.P., 19, 4], 1909, (35). [1450]. 18873 Die analytische Losung des Bahnbestimraiingsproblems. 1. Ark. Matem.. Stockholm, 7, No. 5, 1911, (21, mit 1 Fig.) ; 2. t.e. No. 10, 1911, (28, mitlFig.);3. t.e. No. 16, 1911, (31). [1120]. 18874 Cnarlier, C[arl] V[ilheliii] L[ud\vig]. Second note on multiple solutions in the determination of orbits from tliree observations. v. E 9, No. 16525. London, ilon. Not. R. Astr. See, 71, 1911,(454-459). [1120]. 18875 The analytical solution of the problem of orbits. London, ]\lon. Not. R. Astr. Soc, 71, 1911, (606-609). [1120]. 18876 Die Lagrangesche (Uei- chung im Bahnbestimmungsproblein. Lund, Univ. Arsskr., N.F., 7, Afd. 2, No. 4 [ = Fvsiogr. Sallsk. Handl., N.F. 22, No. 4], '1911, (18). [1120]. 18877 uiid Zinner, E. Entwicke- luug des Potentials im Rotationspro- blem. Ark. Matem., Stockholm, 6, No. 17, 1910, (48). [1050 1700]. 18878 Chase, F[rederick] L[incoln]. Refiac- tion of red stars. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (90-91). [3350 7070]. 18879 The series of parallaxes of large proper motion stars made with the Yale heliometer. [Abstract.] Pub. Astrcu. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910,(102-104). [7070]. 18880 On the parallax of Nova Persei. [Abstract.] Pub. Astron. Astroph. .Soc. Amer., Ann Arbor, Mich., 1,1910,(1.52). [7600 7070]. 18881 Ohatelu, A[ndre]. Ephem^ride de la planete (409) Aspasia. Bui. astr., Paris, 28, 1911, (282). [5900]. 18882 £phemeride de la planete (644) (1907 AA). Bui. astr., Paris, 28, 1911, (283). [5900]. 18883 Chatelu, J[ules]. Observations de planetes et de cometes faites k I'observa- toire de Paris (equatorial de la Tour de I'Est de 0". 38 d'ouverture). Bul. astr., Paris, 28, 1911, (211-212). [5910 6600]. 18884 Observations de planetes et de cometes faites a I'oljservatoire de Paris (equatorial de la Tour de I'Ouestde 0"". 31 d'ouverture). Bul. astr., Paris, 28, 1911,(293-295). [5910 6600]. 18885 Chevalier, Stanislas. Mitteilungen zur Bonner Durchumsterung. [Nebst Be- merkung von F[riedrich] KUstner.] Astr. 65 Naclir., Kiel, 189, 1911, (109-112). [7050]. 18886 Chevalier, Stanislas. The solar rotation f 1(1111 tlie motion of the faculae on tlie disk (190G-1908). Astroph. J., Chicago, 111., 32, 1910, (388-399, with te.U fig., talis.). [4000]. 18887 Sur la for.aie du soleil. Bui. astr., Paris, 28, 1911,(321-337). [4030]. 18888 Chofardet, P[ierre]. Ephemeride de la planete (33) Polyhymnia. Astr. Naclir., Kiel, 187, 1911, (367-308). [5900]. 18889 Observations de la comete de Hallev 1909c. Astr. Nachr., Kiel, 188, J 911, "(1-6). [6000]. 18890 Ephemeride de (268) Adorea. Astr. Nachr., Kiel, 189, 1911,(323-324). [5900]. 18891 Otiservations de la comete de Halley [1909-1910]. Bui. astr., Paris, 28,1911,(124-130). [6600]. 18892 Ephemeride de la planete (33) Polyhymnia. Bui. astr., Paris, 28, 1911, (1 32 j. [5900]. 18893 Ephemeride de la planete (327) Columbia. Bui. astr., Paris, 28, 1911,(172). [5900]. 18894 -- fiphemeride de la planete (298) Baptistina. Bui. astr., Paris, 28, 1911,(467). [5900]. 18895 Observations de la comete Kiess (1911?)) faites a I'Observatoire de Besangon. Paris, C. R. Acad, sci., 153, 1911,(167). [6600]. 1889(1 Observations de la comete Brooks (1911c), faites a I'Observatoire dt' Besangon. Paris, C. R. Acad, sci., 153, 1911, (380). [6600]. 18897 Observations de la comete Q lenisset (1911/), faites a I'Observatoire de Besangon. Paris, C. R. Acad, sci., 153, 1911, (058). [6000]. 18898 und Coniel, Rene. Ephe- meride von Planeten. Astr. Nachr., Kiel, 188, 1911, (01-64). [5900]. 18899 Chretien, H. v. Lagrula, J. Christie, W[illiani]H[enry] M[ahoney]. RejJort of the Astronomer Royal to the Board of Visitors of the Royal Observa- tory, Greenwich, read at the annual visitation of the Royal Observatory, 1910 June 18. Greenwich Obsns., 1909, 1911, (1-30). [2010]. 18900 (E^2987) Chwolson. Diirfen wir die physikali- scheu Gesetze auf das Universura au- wenden ? Uns. Welt, Godesberg, 3, 1911,(105-116). [0000]. 18901 Claude, [Georges], Ferri^ et Drien- court. Coniparaisons radiotel^gra- phiques de chronometres par la niethodo ties coincidences entre Paris et Bizerte. Paris, e. R. Acad, sci., 152, 1911, (1152- 1155). [5100 9220]. 18902 Clemens, H. G. J. F. Schrader und seine Spiegelteleskope. Weltall, Berlin, 11,1911,(193-202). [2050 0010]. . 18903 Coggia. Observations de la comete de Faye (e 1910, Cerulli, 9 nov.), faites a I'Observatoire de Marseille. Paris, C. R. Acad, sci., 151, 1910, (1030). [6600]. 18904 Observations de plauetes et de cometes faites k I'observatoire fie Marseille (equatorial d'Eichens de 0'". 26 d'ouveiture). Bui. astr., Paris, 28, 1911, (91-92, 393-395). [5910 0600]. 18905 Cohn, Fritz. Elemeute und Numerie- rung vou kleinen Planeten. Astr. Nachr., Kiel, 189, 1911, (165-172). [5900]. 18906 Konferenz zur Beratung gemeinsamer Massnahmen in betreff der Ephemeridensammlungen. Astr. Nachr., Kiel, 189, 1911, (433-436). [0020]. 18907 V. Hassenstein, W. Comas-Sold, J[os6]. Mars. Astr. Nachr., Kiel, 189, 1911, (327-328). [5840]. 18008 Observaciones de Marte. Astr. Nachr., Kiel, 190, 1912, (5-8, mit 1 Taf.). [5840]. 18909 Comstock, D. F. The principle of relativity. Science, New York, N.Y., (N. Ser.), 31, 1910, (767-772). [3300]. 18910 Comstock, George C[ary]. The proper motions and parallaxes of the tenth magnitude stars. Astr. Nachr., Kiel, 187,1911,(113-120). [7060 7070]. 18911 Atmospheric refraction near the horizon. Pop. Astr., Northfield, Minn., 18, 1910, (90-92). [3100]. 18912 The passage of Halley's comet. May 18. Pop. Astr., Northfield, Minn., 18, 1910, (370). [6600]. 18913 66 Comstock, George C'[arj']- Kesearch work at the Washburn observatory. Stellar parallax, the lunar atmosphere, the ocular helionieter. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich.. 1, 1910, (7-11, with tab.). [4840 7070J. 18914 Some investigations relating to zenith telescope latitudes. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arljor, Mich., 1, 1910, (46-47). [5100]. 18915 Some researches in stellar color. [Abstract.] Pub. .Astron. Astroph. Soc. Amer., Ann Arbor, Mich.. 1, 1910, (89-90). 18916 The determination of double star orbits. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1,1910,(160-161;. [7530]. 18917 The masses in 85 Pegasi. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, ilich., 1, 1910, (187). [7530]. 18918 PreliminaiT announcement with regard to the proper motions of certain faint stars. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (189). [7060 1840]. 18919 The sun's motion relative to a group of faint stars. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1,1910,(203-204). [1840]. 18920 Distribution of the stars. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (237- 239). [7160]. 18921 Apex of the solar motion. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, ilich., 1, 1910, (270- 271). [1840]. 18922 The significance of the star ratio. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (280-282). [7160]. 18923 The luminosity of the brighter lucid stars. [Abstiact.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (307). [7080]. 18924 Conlel, J. Note eur le retour de la comete Barnard 1892 V. Astr. Nachr., Kiel, 188, 1911, (269-274). [6600]. 18925 Coniel, Rene, fiphem^ride de la pla- nke (441; Bathilde. Bui. astr., Paris, 28,1911,-304). [.5900]. 18926 Ephem^ride de la plan^te (377) Campania. Bui. astr., Paris, 28, 1911,(345). [5900]. 18927 Ephemeride de la planete (89) Julie. Bui. astr., Paris, 28, 1911 , (346). [5900]. 18928 V. Chofardet, P. Conatantln, F. La comete de Johan- nesburg vue k Port-au-Prince (Haiti). Gaz. astron., Bruxelles, 1910, (23). [6600J. 18929 Cooke, W[illiam] Ernest. Standard astrometry of the future. Astr. Nachr., Kiel. 187, 1911, (81-82). [7000]. 18930 The new sun dial or helio- chronometer. Pop. Astr., Northfield, Minn., 18, 1910, (607-613, with fig.). [2600]. 18931 Fundamental astronomy : A suggestion. London, Mon. Not. R. Astr. Soc, 71, 1911, (725-727). [3080]. 18932 Uccultatiou of the star B.D.--12'' 4042 by Jupiter observed at the Perth Obsei-vatory, Western Aus- tralia. London, Mon. Not. R. Astr. Soc, 71,1911,(728). [6070]. 18933 A proposed new method in fundamental astronomy. Observatory, London, 34, 1911. (366-370). [19001. 18934 Standard astronomy. Lon- don, Mon. Not. R. Astr. Soc, 72, 1912, (152-155). [1900]. 18935 Cookson, Bryan. A researcli on the aberration constant and the variation of latitude by means of a floating zenith telescope. London, Mem. R. Astr. Soc, 60, (pt. II), [1911], (83-139). [1720 3310]. 18936 Cordeiro, F. J. B. The tilting of the earth's axis and the glacial epochs. Pop. Astr., Northfield, Minn., 18, 1910, (201-213, with fig.). [5000]. 18937 Corrig'aii, Severinus J. An astro- nomical theory of the molecule and an electronic theory of matter. Solar and terrestrial physics viewed in the light thereof. Part 4. (Continued.) The terrestrial atmosphere. Pop. Astr., Northfield, Minn., 18, 1910, (32-39). [1000]. 18938 67 Cotton, A. On Doppler's principle, in connection with the study of the radial velocities on tlie ann. Astroph. J., ChicaKo, III.. 33, 1911,(375-384, with text fig). [8500 4G40]. 18939 Courtenay, R. The moon's visibility and tiie date of the Crneifixion. Ob- servatory, London, 34, 1911, (228-232). [9420]. 18940 Courty, I'\ V. Picart, S. Courvoisior, L[eo]. Berichtigungen znm Katalog der Astronomischen Geselischaft, Zone + TO" bis +75°, Ber- lin. Astr. Nachr., Kiel, 187, 1911, (159-160). [7050]. 18941 (ielegentliclie Beobachtun- gen am grossen Meridiankreise der Ber- liner Sternwarte. Astr. Nachr., Kiel, 189,1911,(25-28). [7020]. 18942 Cowell, P[hilip] H[erbert] and Orom- melln, A[ndre\v] C[Iaude] I)[e la Cheroia]. Investigation of the motion of Halley's comet from 1759 to 1910. Greenwich Obsns., 1989, Appendix, (1-84). [6600 1130]. 18943 Crawford, Russell Tracy. A con- tribution on astronomical refraction. [Abstract.] Puli. Astron. Astroph. Soc. Anier., Ann Arbor, Mich., 1, 1910, (253- 254). [0210]. 18944 Note on the orbits of comets Halley, a 1910, and e 1909 (Daniel). San Francisco, Cal., Pul). Astr. Soc. Pac, 22, 1910, (97-98). [0(500]. 18945 and Champreux, A. J. Orbit of the seventh satellite of Jujjiter. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (260- 261). [6550]. 18946 Crommelin, A[ndrew C[Iaude] D[e la Cherois]. Note on Mr. Innes' paper. (No. 19474) London, Mon. Not. R. Astr. Soc, 71, 1911,(505). [1130]. 18947 Planet MT. Observatory, London, 34, 1911, (398-400). [5900]. 18948 V. Cowell, P.H. Curtis, Heber D[oust] Observations of Hallev's comet 1909 c. Astr. Nachr., Kiel, 188, 1911, (313-314). [6600]. 18949 The quadruple system of Alpha lieminornm. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1,1910,(224-226). [8600]. 18950 (E-2987) ciseo, Cal , 1910, (33). Curtis, Heber D[oust]. Spectrographic and photographic observations of Comet c 1908 (Morehouse). [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (333-334). [6000 6920]. 18951 — Thirteen stars liaving vari- able radial velocities. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich,, 1, 1910, (334J. [8550]. 18952 Three stars of great radial velocity. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (334). [8500]. 18953 Halley's comet. Sau Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (33, with pL). [6600J. 18954 Comet a 1910. San Fran- Pub. Astr. Soc. Pac, 22, [6600]. 18955 Photographs of Halley's comet made at the Lick observatory. San Francisco, Cal., Pub. Astr. Soc. Pac, 22, 1910, (117-130, with pi.). [6600]. 18956 Photographic positions of Nova Lacertae. Berkeley, Univ. Cal. Pub. Astr., Lick Obs. Bull., 6, (No. 194), [1911], (99). [7600]. ' 18957 Die Entfernungen der Fixsterne. [Referat.] Sirius, Leipzig, 44, 1911, (249-255). [7000 1800]. 18958 Astronomical problems of the southern hemisphere. [Reprinted with author's revision from San Fran- cisco, Cal., Pub. Astr. Soc. Pac, 21, No. 129, Dec. 10, 1909.] Washington, D.C., Smithsonian Inst. Rep., 1910, 1911, (329-340, with f.). [0040 1900]. 18959 Curtiss, R[alph] H[amilton]. Second elements and ephemeris of Comet a 1910. Pop. Astr., Northfield, Minn., 18, 1910, (302-303). [6600]. 18960 A possible third body in the system of Algol. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (299). [8560]. 18961 On differential flexure in the single-prism spectrograph. [Ab- stract.] Pub. Astron. Astroph. Soc Amer., .Ann Arbor, Mich., 1, 1910,(327- 328). [2220]. 18962 The new spectrograph measuring engine of the Detroit ob- servatory. [Abstract.] Pub. Astron. F 2 68 Astropl). Soc. Anier., Ann Arbor, Mich., 1, 1910, f328). [2140J. 18963 Curtiss, K[alph]H[amilton]. The focal curves of the siugle-material camera doublet of the single-prism spectrograpli of the Detroit observatory. [Abstract.] Pub. Abtron. Astroph. Soc. Amer., Ann Arbor, ilich., 1, 1910, (328). [2040]. 18964 Daluner, G. Die Gebilde der Mond- oberflache. N. Jahrb. Min., Stuttgart, 1911, I, (89-113, mit 3 Taf.j. [4)^30]. 18965 Wie entstanden die Mondge- birge ? Umschau, Frankfurt a. M., 15, 1911, (822-8i'.oj. [4800]. 18966 Dahrenstaedt, [Robert]. Zur schein- baren (irosse des Moudes. Woehenschr. Ther. Auge, Dresden, 14, 1911, (258- 259). [0105]. 18967 Dale, J. B. Comet I'.Jll f (Quenisset). Astr. Nachr., Kiel, 189, 1911, (367-368). [6600]. 18968 Damry, A. L'eclipse totale de soleil du 30 aout 1905 k Burgos. Brusellea, Bui. Soc. astron., 1908, (217-233). [4210]. 18969 Epreuves reversibles ; photographies int^grales. Biuxelles, Bui. Soc. astron., 1908, (245-254). [2130]. 18970 Visite des installations du service astronomique de I'observatoire royal d'Uccle. Bruxelles, Bui. Soc. astron., 1908, 341-355, 385-392;; 1909. (1-25, 41-.59). [2010]. 18971 Darwin, Cieorge Howard. Scientific Papers. Vol. 11. Tidal friction and cosmogonv. Cambridge (University), 1908, (XVI-f516). 28 cm. Vol. III. 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K. Wilson, Ralph E. New positions of the stars in the Huyghenian [sic] region of the Great nebula in Orion. Oniversity of Virginia Publications Bui. Phil. Soc. Scientific Series, Charlottesville, Va., 1, 1910, (85-125, with map, tabs.). [7030]. 20417 V. Storey, J[ohn]. Winawer, B. v. Zeeman, P. Wirtz, C[arl] [W.]. Beobachtungen von Kometen. Astr. Nachr., Kiel, 188, 1911, (193-194). [0000]. 20418 Beobachtungen des Plane- ten (433) Eros in den Jahren 1900-1901 am 49 cm Refraktor der Strassburger Sternwarte. Astr. Nachr., Kiel, 190, 1912, (401-426). [5910]. 20419 Beobachtungen von Nebel- flecken am 49 cm-Refraktor. Tl 3 1902 April bis 1910 Marz. Strassburg, Ann. Sternw., 4, 1911, (1-78). [7800]. 20420 Generalkatalog der am grossen Refraktor in Strassburg beob- achteten Nebelflecke. 1881-1910. Yer- gleichung . . . mit andorn Nebelver- zeichnissen. Strassburg, Ann. Sternw., 4,1911,(79-112). [7800]. 20421 126 Wodetzky, Jijzsef. A Hold-mozgds variiiczicija. [Variation der JIond-Bewe- gung.] Matli. Phys. L., Budapest, 20, 1911, (41-46, lOG-127). [1400 4820]. 5^0422 A feny szfnszorodasa a vilagterben. [Dispersion des Lichtes im Weltraiim.] Potf. Termt. Kozl., Budapest, 43, 1911, (1-16). [1830]. 20423 Jupiter nyolczadik liold- jarol. [Uljer den VIIl. Jupitermond.] Potf. Termt. Kozl., Budapest, 43, 1911.' (61-63;. [1520 [6550]. 20424 Az 1910. e. iistokos es Faye iistokosenek azonossaga. [Cher die' Identitat des Kometen 1910. e und des Fave'schen Kometen.] Termt. Kozl., Budapest, 43, 1911, (49-51). [6600]. 20425 A Hold feliiletenek foto- chemiai tanulmanyozasa. [Photochemi- sche Studie der Obei-flache des ]\rondes.] Termt. Kozl., Budapest, 43, 1911, (403- 404j. [4890]. 20426 Wolilwill, E[mil]. I)er Anteil deut- scher Forscher an den ersten teleskopi- sclien Entdeckungeu. Hamburg, Verb, natw. Ver., (3. F.), 16, (1910), 1911. (LXX-LXXII). [0010]. ' 20427 Wolf, il[ax]. Aufnalimen von kleinen Planeten. Astr. Nachr., Kiel, 187, 1911, (63-64). [5910]. 20428 . Das Spektrum der Nova Lacertae. Astr. Nachr., Kiel, 187, 1911, (133-136). [8320 8350]. 20429 Mitteilungen iiber kleiiie Planeten. Astr. Xachr., Kiel, 187, 1911, (335-336). [5910]. 20430 Photogi-aphische Aufnah- mea in Konigstubl. Astr. Nachr., Kiel, 187, 1911, (431-432). [5910 6600]. 20431 Photographische Aufnah- men in Konigstuhl. Astr. Nachr., Kiel, 187, 1911. (463-464). [5910 6600]. 20432 Cber eine merkwiirdige Sternschnuppe. Astr. Nachr., Kiel, 188, 1911,(257-258). [6650]. 20433 Achter Jupiter-Satellit. Astr. Nachr., Kiel, 188, 1911, (259-260). [6550]. 20433a Aufnahmen auf der Ko- Wolf, Jl[ax]. Wolfscher Komet 1911 a. Astr. Nachr., Kiel, 188, 1911,(347-348). [C(iOO]. 20435 Neuer Komet 1911 b. Astr. Nachr., Kiel, 188, 1911,(395-396). [6600]. 20436 Aufnahmen in Konigstuhl 1911 Juni 29. Astr. Nachr., Kiel, 188, 1911, (396). [5910]. 20437 Vermessung von kleinen Planeten. Astr. Nachr., Kiel, 189, 1911, (211-212). [5910]. 20439 Borrellyscher Komet 1911 e. Astr. Nachr., Kiel, 190, 1912,(223-224). [6600]. 20440 Das Spektrum des Kome- ten 1911 c (Brooks). Heidelberg, Sitz- Ber. Ak. Wiss., math.-natw. Kl., 1911, Abh. 25, (1-6). [6920]. 20441 Geschichtete Linienemis- sion im Ringnebel. Heidelberg, Sitz- Ber. Ak. Wiss., math.-natw. Kl., 1911, Abh. 27, (9, mit 1 Taf.). [8220 8270 8280]. 20442 Die HaujDtliuien im Spek- trum des Kometen 1911 c (Brooks). Heidelberg, SitzBer. Ak. Wiss., math.- natw. Kl., 1911, Abh. 29, (6, mit 1 Taf.). [6920]. 20443 Die Spektra zweier plane- tarischer Nebel. Heidelberg, SItzBer. Ak. Wiss., math.-natw. KL, 1911, Abh. 35, (9, mit 1 Taf.). [8220 8270 8250]. 20444 Die Eutfernung der Sterne. (Vortrag . . .) Heidelberg, SitzBer. Ak. Wiss., math.-matw. Kl., 1911, Abh. 37, (27). [7000 1800 0040]. 20445 Konigstuhl-Nebel-Iiiste 12. nigstuhl-Sternwarte. Astr. Nachr., Kiel, 188,1911,(263-264). [5910]. 20434 Mittlere Orter, Beschreibung und Hellig- keitsvergleichung von 279 Nebelflecken bei X Ursae. Heidelberg, Veroff. Sternw., 6, 1911, [1912], (9-18). [7800]. 20446 und Ernst, E. Der Gang der Hauptuhren der Sternwarte. Heidel- berg, Veroff. Sternw., 6, 1911, [1912], (79-84). [2100]. 20447 [ u. Roy, F. de.] Nova Lacertae. Astr. Nachr., Kiel, 187, 1911, (111-112). [7600]. 20448 V. Javelle, S. Wolfer, A [If red]. Provisorische Son- nenflecken-lielativzahlen liir das 4. Quartal 1910. Met. Zs., Braunschweig, 127 28, 1911, (14-45); . . . fiir das 1., 2., 3. Quartal 1911. t.c. (187-321, 469). [4070]. 20449 Wolff, N. Die Entwickeliuig der Gradmessung. Allg. VennessNacbr., Liebeuvverda, 23, 1911, (25-30, 33-46, 57-05, 73-70). [5000 0010]. 20450 Wood, H. E. [\V.]. Minor Planet 1911 LZ. Astr. Nachr., Kiel, 188, 1911, (396). [5910]. 20451 Observations of comets. Astr. Nachr., Kiel, 189, 1911, (341-342). [6600]. 20452 ■ Occultation of Saturn, 13th March, 1910. Johannesburg, Transv. Observ. CircuL, 3, 1910, (20). [4870 6170]. 20453 Observations of Eros. Johannesburg, Transv. Observ. CircuL, 4, 1910. [5910]. 20454 Observations of Halley's comet, 1910. Photographic results. Johannesburg, Transv. Observ. Circul., 4, 1910, (20-34, pis. I-Xll). [6600]. 20455 The counterglow (Ciegen- schein). Johannesljurg, Transv. Observ. CircuL, 5, 1910, (58-59). [6720]. 20456 Halley's comet. Addi- tional observations and remarks. Jo- hannesburg, Transv. Observ. CircuL, 5, 1911, (55). [6600]. 20457 Notes on southern nebulae. Johannesburg, Transv. Observ. CircuL, 7, 1911, (76) ; 8, 1910, (86). [7800]. 20458 Photogi'aphic observation of Jupiter's satellite VI. Johannesburg, Transv. Observ. CircuL, 8, 1911. [6550]. 20459 Two new short-period variable stars. Johannesburg, Transv. Observ. CircuL, 8, 1911, (85). [7600]. 20460 Observation of sixth and eighth satellites of Jupiter. Johannes- burg, Transv. Observ. CircuL, 9, 1911. [6550]. 20461 Observations of minor planets. Johannesburg, Transv. Observ. CircuL, 8, 1911, (82-83); 9,1911. [5910]. 20462 and WorseU, \V. M. Occulta- tion of Saturn. Johannesburg, Transv. Observ. CircuL, 3, 1910, (20). [6560 0170 4870]. 20463 V. EbelL M. Wood, (Mrs.) H. E. Observation of the Oegenschein. Johannesl)ui'g, Transv. Observ. CircuL, 11, 1911, (102). [6720]. 20464 V. Innes, R. T. A. Wood, R[obert W[illianis]. The moon in ultra-violet light. Baltimore, Md., Johns Hopkins Univ. Cir., (N. Ser.;, No. 2, 1910, (8-9). [4890]. 20466 ■ The moon in ultra-violet light, and spectro-selenograpliy. Pop. Astr., Northfiekl, Minn., 18, 1910, (07- 72, with pL). [4890]. 20467 Woodward, R. S. The energy of condensation of stellar bodies. [Aljstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (15.3). [1800]. 20168 Worsen, W. M. Observations of southern variable stars. Johannesljnr^, Transv. Observ. CircuL, 5, 1910, (40-48). [7600]. 20469 Observations of star colors. Johannesburg. Transv. Observ. CircuL, 7,1911,(73-75). [7120]. 20470 V. Innes, R. T. A. Wright, W[illiam] H[ammond]. A simple method of inserting the compari- son spectrum in spoctrographic observa- tions. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (111). [2250]. 20471 A determination of the wave lengths of the brighter nebular lines. [Abstract.] Pub. Astron. Astroph. Soc. Amer., Ann Arbor, Mich., 1, 1910, (172). [8220]. 20472 The spectrum of Nova Lacertae. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 194), [191 1], (95-99, with pL, tabs). [8300]. 20473 Further observations of the spectrum of Nova Lacerta?. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 194), [1911], (100, with tab.). [8300]. 20473a ■ Two stars with variable radial velocities. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 199), [1911], (153). [8550]. 20474 Wulf, Th. et Lucas, J. D. Deux observations faites au moyen du recep- teur au selenium lors de I'eclipse totale de soleil du 30 aoiit, 1905. Bruxelles, Ann. Soc. Sci. 1905-1906, (380-405). [4240J. 20475 128 Wulff, Georges. I.e soleil s'eteindra- t-il uii jour? Echo Wallon, Xaniur, 1911. [4010]. 20477 Yendell, Paul S[el)astian]. Note on 60-4-33° 4426, RA. 221i Om 18s. 5; Decl. 33° 5G'.4 (1855). Astr. J., Albnnv, N.Y., 26, 1910, (162). ["GOOJ. 20478 The Heis-Ivriiger observa- tions of variable stars. Pop. Astr, Xorthfield, Minn., 18, 1910, (516-517). [7600]. 20479 On a variable star in Scorpio. Astr. J., Albany, X.Y., 27, 1911, (13-14J. [7600]. 20480 Young, Anne Sewell. Resume of sun- spot observations, 1909. Pop. Astr., Northfield, Minn., 18, 1910, (128). [4070]. 20481 Young, R. Elementsof Comet f^ 1910. Pop. Astr., Northfield, iliuu., 18, 1910, (561). [6600]. 20482 Young, R[eynold] K. Observations of Comet e 1909 (Daniel). Berkelev, Univ. Cal. Pub. Lick Obs. Bull., 6 (No. 189), [1910], (73). [6600J. 20483 Observations of Comet h 1910 (Mefcalf). Berkelev, Univ. Cal. Pub. Astr. Lick Obs. Bull!, 6 (No. 189), [1910], (75). [6600]. 20484 Elliptic elements of asteroid 1909 HZ. Berkeley, Univ. Cal. Pub. Lick Obs. Bull., 6 (No. 191), [19101, (88). [5900]. 20485 Observations of Comet e 1910 I'Cerulli-Faye). Berkelev, Univ. Cal. Pub. Astr. Lick Obs. Bull", 6 (No. 192j, [1911], (90-91). [66001. 20486 and Aitken, W. E. Ele- ments and epbemeris of Comet c 1911 (Brooksj. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 200), [1911], a55). [6600]. 20487 Haynes, Eli S[tuart] and Pitman, John H. Second elements and ephemeris of Comet c 1911 (Brooks). Berkelev, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 202), [1911], (158). [6600J. 20488 and Wilson, Herbert C[ouper]. Elements of the orbit of Minor ]>lanet (683) 1909 HC. Berkeley, Univ. Cal. Pub. Astr. Lick Obs. Bull., 6 (No. 192). [1911], (90j. [5900]. 20489 Yowell, Everett I. v. Porter, J. G. Zeeman, P. and Winawer, B. Tiie magnetic separation of absorption lines in connection with sun-spot spectra. Astroph. J., Chicago, 111., 32, 1910. (329-362, with text fig., pL, tab.). [4550]. 20490 Zeipel, H. v. Determination du temps. (Missions scientif. p. 1. mesixre d'un arc de mendieu au Spitzberg en 1899-1902. Mission suedoise, 1:3 A.) Stockholm, 1909, (95, 1 pi.). 31 cm. [9220 5100]. 20491 — Mesure des angles azimiitaux. (Missions scientif. p. 1. mesure d'un arc de meridieu au SjDitzberg en 1899-1902. Mission suedoise, 1:3 15.) Stockholm, 1909, (44). [5100]. 20492 Sur les limites de con- vergence des coefficients du develojjpe- ment de la fonction perturbatrice. Ark. Matem., Stockholm, 6, No. 33, 1911,(44). [1250]. 20493 Note sur le calcul des co- efficients 7°'' de Gylden. Ark. Matem., Stockholm, 7, No. 3, 1911, (4). [1250]. 20494 Zillilien, Georg. Der Kolner Fest- kalender. Seine Entwicklung und seine Verwendung zu Urkundendatierungen. Ein Beitrag zur Heortologie mid Chrono- logie des ilittelalters. Bonner Jahrb., H. 119, 1910, (13-157). [9420]. 20495 Zinner, E[rnst]. Untersuchung iiber die Algolsterue! Astr. Nachr., Kiel, 187, 1911, (177-188). [7600]. 20496 Die Verteilung der ver- anderlichen Sterne. Astr. Nachr., Kiel, 190, 1911, (17-20, mit 1 Taf.). [7600]. 20497 Die Einwirkung des Erd- bebens vom 16. Nov. 1911 auf die Uhren der Remeis-Sternwarte zu Bamberg. Astr. Nachr., Kiel, 190, 1912, (155-158, mit 1 Taf.). [2100]. 20498 Beobachtungen von Veran- derlichen in den Jahren 1910 und 1911. Astr. Nachr., Kiel, 190, 1912, (377-390). [7600]. 20499 V. Charlier, C. V. L. Zurhellen, W[alter]. Ein Beitrag zur Kenntnis des Stundenwinkelfehlers astrophotographischer Aufnahmen. Astr. Nachr., Kiel, 187, 1911, (65-76). [3250]. 20500 ■ Cber sekundare Wellen in den Geschwiudigkeitskurven spekti'o- skopischer Doppelsterne. Astr. Nachr,, Kiel, 187, 1911,(433-444). [1820]. 20501 129 Zurhellen, W[alter] v. Ristenpart, of the pole of the earth in 1907.] F. W. Amsterdam, Versl. Wis. Nat. Afd. K. Zwiers, H[endrikus] J[ohannes]. Akad. Wet.. 20, 1911 (151-162 with Voorloopig onderzoek naar de beweging i pl-) (Hutch) ; Amsterdam, Proc. bci. K. van de aardpool in liet jaar 1907. [Pre- Akad. Wet., 14, 1911, (211-221, with 1 liminary investigation into the motion pl.) (English). [5100]. ^050;^ (E-2987) ^io SUBJECT OATDAJLtOGUBl Philosophy. 131 0000 SUBJECT CATALOGUE. For certain journals special abbreviations have been used, as follows :- A.A.A. — Ann Arbor Mich. Pub. Astr. Astroph. Soc. Amer. A.N. — Astr. Naciir. Kiel. B.A. — Bui. Astr. Paris. M.N. — London Mon. Not. R. Astr. Soc. R.I.L. — Miiano Rend. 1st. Lorab. P.O. Arc. — Firenze Pub. R. Osser. Arcetri. Gr.O. — Greenwich Obsns. M.S.Pk. — St. Peterburg Mitt. Sternw. Pulkovo. O.C.R. — Mem. Oss. astr. Collegio Romano Roma. S.S.I. — Catania Mem. Soc. spettroscop. Ital. P.A.— Pop. Astr. Northfield Minu. A.J. — Astr. J. Boston Mass. Ap.J. — Astroph J. Chicago 111. C.R.— Paris, C. R. Acad. sci. A.S.P. — San Francisco Cal. Pub. Astr. Soc. Pac. Lick B. — Berkeley Univ. Cal. 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Biographical memoir of Asaph Hall, 1829-1907. Hiollis]. 19415. William Thynne Lynn. Hoppe. 19420. Mathematik und Astronoraie im klassischen Altertum. 19421 : Die Kosmogonie Emanuel Swedenborgs und die Kautsche und La- placesche Theorie. Horigan. 19422. Published writings of Asaph Hall. 133 0010 Huggins, Williamf. London, Proc. R. Soc. (Ser. A), 86, 1912, (I-XIX, with pl.). V. Campl^ell ; Macpherson ; See. Huygens, Christiaan. (Euvres com- pletes de. (Tome 11.) Travaux mathe- matiques 1645-1651. [Gnonomique, Construction d'un cadran solaire (p. 64- 67).] Societe HoUandaise des Sciences, La Haye (Martians x^ijhoiT), 1908, (369, avec fig.). 29 cm. Janssen, Jules Cesar v. Baiime- Pluvinel. Kahle. 19519. Zu Gauss' Gedachtnis. Kant v. Hoppe. KeUer. 19531. Die Astronomie der Pythagoreer. Kepler, Johann v. Dyck ; Goebel. Kircliner. 19540. Die babylonische Kosmogonie und der biblische Schop- fungsbericht. Diss. Knopf. 19549. Erhard Weigel. Kobold. Johann August Weiler. Ne- krolog. A.N., 189, (367). KowALCZYK, Johann v. Rudzki. KuW. 19597. Zur Geschichte der Tagesbeobachtungen. Lakita. 19616. Die Entdeckung des Neptuns. (Ungarisch.) Laplace v. Hoppe. Leveau, Gustav v. Baillaud ; Fayet. Le Verrieu, Urbain Jean Joseph v. Bellamy; Bigourdan ; Riedel. Linke. 19668. Svante Arrhenius. Little, Louis Stromoyerf. M.N., 72, (249). LovERiNG, Joseph V. Pierce. Lowell. Schiaparelli. P. A., 18, (456). Lynn. 19713. The " Astronomische Nachrichten " and its first editor. 19714 : Alexandre Guy Pingre. 19716 : Pierre Gassend. 19717 : The evolution of stellar parallax. Lynn, William Thynnej. London, J. Brit. Astr. Ass., 22,1912, (103-104); M.N., 72, (249-251). V. HoUis. History, Biography. 134 Macpherson. Sir William Iluggins. Some aspects of his life work. P. A., 18, (398) ; tiiovanni Schiaparelli. t.c. (467) ; John Ellard Gore. t.c. (520). Markwick. of ililton. 19739. The astronomy Maskelyne. 19738. Some papers of. Meyer, M. Wilhelm v. France ; Regensberg. Mikami. 19779. Some additions to my paper: "On the Dutch art of sur- veying as studied in Japan." Mills, Darius Ogden. 1825-1910. A.S.P., 22, (36). Newcomb, Simon. In ilemoriam. 1835-1909. [Address by Milton Upde- graff and letter from Fabian Franklin read at meeting held at Johns Hopkins University, Dec. 19, 1909.] Baltimore, Md., Johns Hopkins LTniv. Cir.,(N. Ser.), No. 2, 1910, (77-92). V. Doolittle. 0010 R0mer. 20105. Adversaria. (Danish.) [Roy, De]. 20115c. L'astronomie au Japon. Rudzki. Johann Kowalczykf. A.N., 190,(107). Sande Bakliuyzen. 2013S. Der Zustand der Naturwissenschaften zur Zeit Spinoza's. (Holiiindisch.) Schiaparelli, Giovanni Virginio [by A.]. Ap.J., 32, (313-319, with pi.;. ■ London, Proc. R. Soc. (Ser. A), 86, 1912 (xxxvii-xxxviii). V. Aitken ; Celoria ; Lowell ; Macpherson. Schoy. 20175. Die geschichtliche Entwicklung der Polholienbestimmungen bei den aheren Volkern. 20176 : Die Sonnenuhren der Araber in ihrer Beden- tnng fiir die arabische Astronomie und Religion. SCHU.MACHER, Heinrioh Chi-istian v. Lynn. Oddie, Jf. London, M.X., 72, (251). Schwahe, Heinrich von v. Archenliold. Schwarz. 20183. Johannes Hevelius, der Astronom, 1611-1687. Parr. 19911. A bird's eye view of the history of astronomy. Peter, Bruno Edmund August v. Bruns ; Hayn. Picard. 19948. De la science, p. 3-30 [du volume : " De la methode dans les sciences "]. Pierce. 19985. Biographical memoir of Joseph Lovering, 1813-1892. PiNGRE V. Lynn. Poincare. 20009. Savants et ecri- vains. Phitchett, Carr Waller v. See. Rad.au, Jean Charles Rodolpbet. London, J. Brit. Astr. Ass., 22, 1912, (195-196) ; M.N., 72, (259-261). Regensberg. 20071. NachrufanDr. II. Willi. Meyer. Riedel. 20080. Urbain Jean Joseph Le Verrier. Zum hundertsten Ceburts- tag 11. Marz 1911. Ristori, Emanuel Josepht. il.X., 72, (251-252). Rogers, William A. v. Searle. Searle. 20192. Biographical memoir of William A. Rogers. Part 2. See. Sketch of the career of Professor C. W. Pritchett. P.A., 18, (.348); Tribute to the memory of Sir William Hnggins. i.e. (387). Shaw, Herbert!. M.N., 72, (252). Slater, John Samuelf- il.N"-, 72, (252-253). Spinoza [Baruch] v. Sande Baklmyzen, H. G. van de. STONEy, George Johnstonef. Nature, Loudon, 87, 1911, (.50-51); London, J. Brit. Astr. Ass., 22, 1912, (102) ; M.N., 72, (253-255). V. Ball, R. S. Strahan, Georgef. M.N., 72, (255- 257). Stroobant. Francois Joseph Charles Terbyt. A.N., 188, (63). Sturm. 20308. Koppernicus ist deutscher Nationalitat. 20309 : Kop- pernicus und seine Vorfahren. Books. 135 SwKDiCNnoRG, Emanuel v. Downing ; Hop|)e. TioitRY, Francois Joseph Cliarlesf. London, J. Brit. Astr. Ass., 21, 1911, (328); M.N.,72, (257-258). V. Stroobant. 0020 TiiiEi.E, Tliorvald Nicolai v. Bnrrau. Todd, Chariest. London, Proc. R. Soc. (Ser. A), 85, 1911, (xiii-xvii). Watson, Johnf. M.N., 72, (258). Wegg-Prosser, Francis RIchardt. M.N., 72, (258-259). Weigel, Erhard v. Knopf. Weileu, Johann August v. Kobold. Wiedemann. 20403. Dimensionen der Frde n.icli muslimischen Gelehrten. 2040i : (iesehichte der Naturwissen- schaften. XXI. A. Eine astrouomische Schrift von al Kindi. Wohlwill. 20427. Der Anteil deut- scher Forscher an den ersten teleskopi- schen Entdeckungen. Wolff. 20450. Die Entwickelung der Gradmessung. YocNG, Charles Augustus v. Frost. 0020 PERIODICALS. YEAR BOOKS. PRIZES. REPORTS OF INSTITUTIONS, SOCIETIES, CONGRESSES, Etc. (FOR RE- PORTS OF OBSERVATORIES see 2010.) Berliner astronomisches Jahrbuch fiir 1913 mil Angaben fiir die Oppositionen derPlaneten(l)-(691) fiir 1911. Hrsg. von deni konigl. astrouomischen Reelien- institut unter Leitung vou Fritz Cohn. Berlin (F. Dummler), 1911, (X + 472 + 93)+[47]. 23 cm. Companion to the Observatory. Ob- servatory, London, 35, 1912, (1-38). Conference des Directeurs d'epheme- rides. [Resolutions.] B.A , 28. (449- 452). First conference. A.A.A., 1, (4-2) ; second conference, t.c. (43-44). Third conference or first meeting. A.AA., 1, 1910, (73-74); second meeting. t.c. (99-100); third meeting. t.e. (143-144); fourth meeting. t.c. (181-182); fifth meeting, t.c. (202); si.xth meeting. t.e. (206) ; seventh meeting. t.c. (233) ; eighth meeting. t.c. (262-203); ninth meeting. t.c. (293) ; tenth meeting, t.c. (314-317). Jahrbuch der Astronomie und Geo- physik. Enthaltend die wichtigsten Fortschritte auf den (iebieten der Astrophysik, Meteorologie und physika- lischen "Erdkunde. Unter Mitwirkung von Fachmannern hrsg. von Hermann J . Klein. Jg 21. 1910. Leipzig (E. IL Mayer), 1911, (Vlll-f 352, mit 5 Taf.). 22 cm. 8 il. List of members of the Astronomical society of the Pacific. January 1, 1910. A.S.P., 22, (1-12). Publications of the Astronomical and Astrophysical Society of America. Vol. I. Organization, meml)ership, and abstracts of "^papers, 1897-1909. [Ann Arbor, Mich.], 1910, (x.xvii-f 347, withpL, tabs.). 26.5 cm. Report of the Council on the work of the Session, October 1, 1910, to SeiJtem- ber 30, 1911, presented ... at the annual general meeting, October 25, 1911. London, J. Brit. Astr. Ass., 21, 1911, (417-429). The International union for co-opera- tion in solar research. Ap.J., 32, (258- 263). Transactions of the International union for co-operation in solar research. Vol. III. (Fourth conference.) Manchester (University;, 1911, (viii-F231) 24 cm. 7s. 6d. net. London Royal Astronomical Society, Council of. The Paris conference on nautical abnanacs. M.N., 72, (342- 345). Smithsonian Institution. Annual re- port of the Board of regents . . .for the year ending June 30, 1909. Wash- ington, 1910, (x -1-751, with text ff., pis., maps). 23 cm. . . . for the year end, ing June 30, 1910. Washington, 1911- (vii-|-688, with text if., pis., maps, tabs.). 23 cm. Abbot. 18490. Report on the Astrophysical observatory. Baillaud. [Sur le Tome III du Cata- logue photographique de I'Observatoire de Paris.] C.R., 153, (85). Books- 136 0020 Baillaud. Presentation de deux vo- lumes des Annales de rObservatoire de Paris. [Observations des annees 1893 et 1905.] C.R., 153, (791j. Bassot. [Sur le H' volume des Annales de I'Observatoire de Nice.] C.R., 153, (5S3j. Bisman. 18732. La premiere con- ference des epliemerides. (Paris octobre 1911.) Campbell et alii. ('Sixty-eighth) Award of tlie Donohoe comet-medal. [To Mr. Zaccheus Daniel.] A.S.P., 22, (93). Cohn. Konferenz zur Beratuug gemeinsamer Massnahmen in betreff der Ephemeridensammlungen. A.N., 189, (433). Pickering. 19974. Sixty-fifth annual report of the Director of the Astronomical observatory of Harvard college for the year ending September 30, 1910. Toiila. 20336. Festschrift zur Feier des fiinfzigjahrigen Bestandea des Ver- eines zur Verbreitung naturwisseu- schaftlicher Kenntnisse in Wien. Wilson. The fourth conference of the International union for co-operation in solar research. A.S.P., 22, (169; ; P.A., 18, (489). 0030 GENERAL TREATISES, TEXT BOOKS, DICTIONARIES, COLLECTED WORKS, TABLES. Jahrbuch der Astronomie und Geo- physik. " Enthalteud die wichtigsten Fortschrilte auf den Gebieten der Astrophysik, ileteorologie und physika- lischen Erdkunde. Unter ilitwirkung von Fachmannern hrsg. von Hermann J.Klein. Jg21. 1910. Leipzig (E.H. Mayer), 1911, (VIII + 352, mit 5 Taf.). 22 cm. 8 M. Star identification tables giving sim- ultaneous values of declination and hour angle for values of latitude, altitude, and azimuth ranging from 0° to 88° in latitude and altitude and 0° to 180° in azimuth. Washington (Hvdrographic office), 1909, (364). 22x26."5cm. The scientific papers of Sir William Huggins. Edited by Sir William and Ladv Huggins. [Review bv E. B. F.] Ap.J., 32, (323-325). London Royal Astbonomioal Society, Council of. Precession Tables. Log- arithm Tables. M.N., 72, (339-342). Anding. 18550. Sechsstellige Tafeln der Besselschen Funktionen imaglnaren Argumentes. Fabre. 19133. Der Sternhimmel. [Cbers.] Flotow. 19167. Einleitung in die Astronomie. Fowle. 19177. Smithsonian physical tables. Gray. 19275. Smithsonian physical tables. Hartmann. 1934G. Astronomische Erdkunde. Hawkins. 19353. The A. B.C. guide to astronomy. Henderson. 19371. A popular in- troduction to astronomy : 2nd ed. Hermes. 19378. Elemente der Astro- nomie und mathematischen Geographie. Zuni Gebrauch beim Unterricht auf hoheren Lehranstalten. Hinks. 19392. Astronomy. Hnatek. 19402. Astronomie und Astrophysik. Klein. 19542. Astronomische Abende. Allgemein verstandl. Unterhaltungen liber Geschichte und Ergebnisse der Himmels-Erforschung. 19543 : Mathe- matische Geographie. 19544 : AUge- meinverstandliche Astronomie. Ausf iihr- liche Belehrungen liber den gestimten Himmel, die Erde und den Kalender. Ladenburg. 19603. Die Spektral- analyse und ihre kosmischen Konsequen- zen. Rede . . . Lehmann. 19647. Die verander- lichen Tafeln des astrouomischen und chronologischen Teils des preussischen Nonnalkalenders fiir 1912 . . . (Kalen- dermaterialienfiir 1912. H. 2.) [Populare Mitteilungen hierzu auch gesondert er- schienen.] . . . fiir 1913. Lbwe. 19677. Sterndistanz-Tafel. Maunder. 19746. The science of the stars. Meyer. 19769. Der Mond. Unsere Xauhbarwelt. 19770: Die Welt der Planeten. Pedagogy. 137 Mobius. 19798. Astroiioinie. Croaae, Beweguiigund Entfernuiig der lliiniuels- korper. Tl 2 : Kometen, Meteore uud das Stenisysteni. Neugebauer. 1982G. Sterntaleln von 4000 vor Clir. bis zur Gegeuwart nebst Hilfsiuittelu zur Berechnuug von vStern- positionen zwisclieii 4000 vor Ohr. uiid 3000 uach Clir. zum (iebrauch fiir Histo- riker . . . bearb. (Tal'eln zur astro- nomischen Chionologie. 1.) Oppenheim. 19887. Problenie der modenieii Astronomie. Peters. 19935. Siebenstellige Log- aritlunentafel der trigonometnscheu Funktioaen liir jede Bogeusekunde des Quadranten bearb. Ster.-Auag. Plassmann. 19999. Astronomisclie Interpolationstafel. Reinbardt. 20072. Vom Nebeiaeck zum Menselieu. Ruscb. 20122. HimmelsbeoLachtung niit blossem Auge. (Dr. Bastian Schmids naturwibs. Schiilerbibliothek. 5.) Scbeiuer. 201.52. Populare Astro- physik. Trabert. 20339. Lehrljuch der kosiuisclieu Pliysik. 0032 BIBLIOGRAPHIES (GENERA.L. FUR SPECIAL BIBLIOGRAPHIES see the appropriate section). Catalogus van boeken in Noord- Nederland verschenen van deu vroegsten tijd tot op heden. I. Inleiding. Tijdschriften van gemengden inhoud, enz. Bibliographie. IX. Wi.s- en Natuur- kimde. [Katalogvou in den Nordliclieu Niederlanden erschieueuen Biicliern von der friiliesten Zeit bis auf heute. I. Einleitung. Zeitschriften geniiscliten Inhaltes u.s.w. Bibliographie. IX. Matlieniatik und Naturwissenscliaften.] 's Uravenhage (Martinus Nijhoil), 1911, I (76 + Personenregister), IX (96 + Persoueuregisterj, 26 cm. [0010]. Die .Fortschritte der Physik im Jahre 1910. Dargestellt von der dentschen physikalischen Gesellschaft. Jg 06. Abt. 1 : Allgeiiieine Physik, Akustik, physikallsche Ohemie, red. von Karl Scheel.— Abt. 2 : Elektrizitat und Mag- netismus, Optik des gesamteu Spektrums, Warme. Red. v. Karl Scheel. — Abt. 3 : 0050 Kosmisilie Phy.sik. Red. v. Richard Assmann. Braunschvreig (F. Vieweg & S.), 1911, (XXVlII-f485; XLVI+758; LXXIV+686). 23 cm. 26 M. 38 M. 36 M. 0040 ADDRESSES, LECTURES, Etc., OF A GENERAL CHA- RACTER. Acht Vorlesiuigen liber tlieoretische Pliysik, Ma.K Planck ; iJie Kinlieit des physikalischen Weltbildes, .Max Planck. [Review by E. B. F.] Ap.-T., 32, (325- 326). Arrbenius. 18586. Das WeltalL Cbamberlin. 18870. The future habitability of the earth. Curtis. 18959. Astronomical pro- blems of the southern hemisphere. [Re- jDrint.] Dyson. Presidential address on award of gold medal of the Roval Astronomical Society to Mr. A. R. Huiks. M.N., 72, (352). Eddington. 19089. Recent results of astronomical research. Gill. 19240. L'etat actual de I'astro- nomie. Hale. 19321. Solar vortices and magnetic fields. Hougb. 19132. Photography an aid to astronomy. Presidential address to Royal Society of South Africa on April 19,'[1911]. Knobel. 19547. Presidential address to the British Astronomical association, October 25, 1911. Moulton. 19815. The influence of astronomy on mathematics. Turner. 20352. Presidential address to Section A of the British association at Portsmouth. Wolf. 20445. Die Entfernung der Sierne. 0050 PEDAGOGY. Benedicks. 18682. Anordnung zum Vorfiihren des Foucaultschen Pendel- versuches im llorsaai. Brenken. 18779. Die Horizontal- komponente des Foucaultschen Pendel- versuches. Pedagogy. 138 0050 Haberer. 19305. Vortrag der Geodasie und der Markscheidekunde an den moutanistischen Hochschulen. ^^ Hoffmann. 19405. Die matliematische Krd- iiud Iliiumelskunde in Prima. H[ollis]. 19414. The gyro-compass. Lemaire. 19649. Theorie des compas gyroscopiques. MoUer. 19799. Ubungeii im Beob- achten niit dem Sextanten bei triibem Wetter und im Zimmer. Rusch. 20121. Die Himmelskunde in lier Schule. 0060 INSTITUTIONS, MUSEUMS, COLLECTIONS. Celestial photographs. List of re- productions published by the Royal Astronomical Society. M.N., 72, (225- 244). L'astronomie a I'expositlon universelle de Bruxelles 1910. [E. D.] Ciel et Terre, Bruxelles, 1910, (378-381). Berbericli. 18694. Les observatoires astronomiques et les astronomes. SPHERICAL (GEOMETRICAL) ASTRONOMY. 0100 GENERAL. Berliner astronomisches Jahrbuch fiir 1913 init Angaben fiir die Oppositioneu der Blaneten (lJ-(C9ij fiir 1911. Lakenmaclier. 19613. Ein neues Weltgesetz. Flotow. 19167. Einleitung in die Astronomie. 0105 APPARENT FLATTENING OF THE HEAVENS. APPARENT SIZE OF THE HEAVENLY BODIES. Dahrenstaedt. 18967. Zur schein- baren Grosse des Mondes. Filehne. 19154. Die Rolle der Erfalirungsmotive beim einaugigen per- spektivischen Fernsehen. 19155: Die Betrachtungder Gestirne mittels Rauch- glaser und die verkleinernde Wirkuug der Blickerhebung. Nicolaier. 19838. (lelegentliche Ausserungen Forsfers (Breslau) zur scheinljaren Grosse des Mondes. 0150 LONGITUDE (GEOGRAPHI- CAL), LATITUDE, MERIDIAN LINE, RISING AND SETTING, Etc. Abold. Zur Breitenbestinimung nach der Metiiode von Pieuzow A.N., 189, (11). Akesson. 1S533. Au astronomical metliod for determination of icedrift in the neighbourhood of tlie Pole. Brill. 18782. Eine neue einheitliche Methode zur nautischen und aeiouau- tischen Ortsbe.stimmung aus Gestirns- messungen. Tl 3. Dehalu. 18984. Sur la valeur pratique du probleme de Pothenot. Jegou. 19566. Hertzsche Signals zur Zeitbestimmung und zur Messung von geograjjhischen Liingenunter- schiedeu. Kahle. 19520. Hilfsmittel und Methodeu zur Bestimmung der geogra- phischen Lage des Ballonortes bei Fahrten iiber und in den Wolkeii und bei Nacht. Koppe. 19574. Die Stellung der Moudsichel. Marcuse. 19737. Zur Frage der astrououiischen Ortsbestimmung im Ballon. Rosen. 20108. Determination de la latitude au Spitzberg. Schoy. 20175. Die geschichtliche Eutwicklung der Polhohenbestimmungen bei den alteren Volkern. Sotome. Talcott-Horrebow's method of deteriuining latitude made applicable to a small theodolite. A.N., 187, (337). TisBOt. 20326. Die geographische Liingenbestimmung mittels drahtloser Telegrapliie. (Uebers.) Wedemeyer. 20384. Losung des Zweihoheuproblems in der Karte. 20385 : In&trumente zur Auswertung von Gestinishohenbeobachtungen in der Karte. WMtmell. 20398. Jovian latitude. 0210 REFRACTION, TWILIGHT, DIP OF THE HORIZON. Bergstrand. 18697. Sur le calcul de la refraction differentielle en distance et en angle de 2Dosition. Theoretical Astronomy- 139 1100 Crawford. 18944. Acontrilmtion on astronomical refraction. [Abstract.] 0240 CORRECTION FOR MOVE- MENT OF EARTH AND EQUINOXES. Hardcastle. 19334. The wave-curve. 0250 ABERRATION. Garavito. 19210. Theory of the aberration of light. Rayleigh. 200GG. Aberration in a dispersive mediiini. 0260 PRECESSION AND NUTATION. And oyer. Les formules de la preces- sion tl'apres S. Newoonib. B.A., 28, (67). Hardcastle. 19335. Nutation. 0300 GEOCENTRIC AND HELIO- CENTRIC CO-ORDINATES. Brendel. 18778. Theorie der kleinen Planeten. 0350 ECLIPSES, OCCULTA- TIONS, APPULSES, TRANSITS (OF PLANETS AND SATEL- LITES ACROSS DISC OF SUN OR PLANETSj. Ball. Zur Berechnung der seleuozen- trischen Rektaszension und Dekliuation der Sonne. A.N., 190, (21). THEORETICAL ASTRONOMY AND CELESTIAL MECHANICS. 1000 GENERAL. Brush. 18803. A kinetic theory of gravitation. Cardoen. 18854. How difficult pro- blems are solved bj' astronomers in a simple manner. (Flemish.) Corrigan. An astronomical theory of the molecule and an electronic theory of matter. Solar and terrestrial jDhysics viewed in the light thereof. Part 4. (Continued.) The terrestrial atmosphere. P.A., 18, (32). Flotow. 191G7. Einleitung in die Astronomie. Hoppe. 19421. Die Kosmogonie Emanuel Swedenborgsund die Kantsche und Laplacesche Theorie. Popovici. Siir les mouvements per- maiients stables. C.R., 152, (40). Sitter. On the bearing of the principle of relativity on gravitational astronomy. M.N., 71, (388j. 1050 LAW OF UNIVERSAL GRAVITATION. Brush. 18803. A kinetic theoiy of gravitation. [Aljstract.] Charlier & Zinner. 18878. Entwicke- lung dea Potentials im Rotationsproblem. Eotvos. 19115. Die Niveaufliichen und die Gradienlen der Schwerkraft am Balatonsee. Beobachtungen auf cler Eisdecke in den Jahren 1901 und 1903. Kirchberger. 19539. Zur Herleitung des Gravitationsgesetzes aus den Kep- lerscben Gesetzen und umgekehrt auf Grund des Energieprinzips. Oltay. Messung der Schwerkraft- beschleunigung in Budapest.(Ungarisch.) Shedd. 20225. The genesis of the law of gravity. Sterneck. 20274. Schwerkraft in der Umgebung des Balatonsees. SOLAR SYSTEM. 1100 GENERAL. Behrens. 18669. Ein mechanisches Problem aus der Theorie der Laval- Turbine, behandelt mit Methoden der Himnielsmechanik. Bernstein. 1 8698. Eine Anwendung der Mengenlehre auf ein aus der Theorie der siikularen Storungen herriihreudes Problem. Brendel. 18778. Theorie der kleinen Planeten. Klinkerfues. 19546. Theoretische Astronomie. Nies. Gesetzmiissigkeit der Planeteu- rotation. A.N., 190, (189). See. 20205. Further considerations on the origin of the zone of asteroids and on the capture of satellites. Seeliger. Einfluss des Lichtd rucks auf die Bewegung planetarischer Korper. A.N., 187, (417). Theoretical Astronomy. UO 1110 ORBITAL MOVEMENTS OF TWO BODIES ; KEPLER'S LAWS. Bohlin. Xote sur le probleme des deux corps et sur une integration nouvelle daus le probleme des trois corps. B. A., 28, (113.). Lambert. Xote sur le passage des anomalies exceutriques aux anomalies vraies. B.A., 28, (337). Teege. 1^43315. Zur Herleitung des Gravitationsgeseizes a us den Ivep- lersclien tiesetzen und umgekehrt nur auf Grand des Energiepriuzips. Trousset. Sur I'equation de Kepler. B.A., 28, (389J. 1120 CALCULATIOX OF ORBITS. Akesson. 18534. Eine Bymmetrische Form der analytischen Losung des Bahnbestimmungsproblems. Chaxlier. Second note on multiple solutions in the determination of orbits from three observations. M.N., 71, (45-4,1 ; The analytical solution of the problem of orbits. t.c. (606) ; 18874: Die analj^tische Losung des Bahnbestimmungsproblems ; 18877 : Die Lagrangescbe Gleichung im Bahn- bestimmungsproblem. Klinkerfues. 19540. Tbeoretische Astronomie. Leusclmer. 19655. A short and general method of determining orbits from three observations. [Abstract.] 19656 : A method of computing orbits in rectangular coordinates. [Abstract.] 19657: X^otes on the short method of determining orbits from three observa- tions. [Abstract.] 19658: The solu- tion of an orbit irrespective of parallax and aberration. [Abstract.] Vogel. Die Unmoglichkeit dreier Losungen bei einer theoretisch voll- standigen Bestimmung einer paraboli- schen Bahn. A.X., 188, (105). 1130 ORBITS OF' PLAXETS, COMET.S, METEORIC STREAMS. Cowell & Crommelin. Investigation of the motion of Hallev's comet from 1759 to 1910. Gr.O., 1909, Appendix, (1-84. Crommelin. Xote on Mr. Innes' paper. M.X., 71, (505i. 1110 Fayet. Criterium de Tisserand pour les cometes a courte periode. Proximites d'orbites. B.A., 28, (145). Innes. On osculating elements. M.X., 71, (503). Klinkerfues. 19546. Tbeoretische Astronomie. Lakits. 19014. Bahn der Kometen. (Ungar.) Leusclmer. Xote on the multiple orbit solutions of Comet a 1910. Lick B., 6, (130) ; 19660 : An analytical method of determining orbits of new satellites. [Abstract.] Ryan. Planet orbits. P.A., 18, (73). Searle. A method of computing a parabolic orbit. A.J., 27, (29). Strbmgren. 20290. Die kosmogoni- sche Stelluug der Kometen. Tschemy. Klassifikation der kleinen Grossen, die bei der Bahnbestimmung der Himmelskorper vorkommen. A.N., 189, (135). 1200 PROBLEM OF THREE OR MORE BODIES; XATURE OF IXTEGRALS, COXVERGENCE OF SERIES, PERIODIC ORBITS, CHARACTER OF ORBITS. Bilimowitscli. Einige partikulare Losungen de.s Problems der n-Korper. A.X., 189, (181). Bohlin. 18743. Integral-Entwicke- lungen des Dreikorper-Problemes. 2. 18746 : Integralentwickeluugeu des von Hardtlschen Dreikorper-Problemes. Brown. On a new family of periodic orliits in the problem of three bodies. M.X., 71, (438, with pis.); On the oscillating orbits about the triangular equilibrium points in the problem of three bodies, t.e. (492). ' Happel. 19333. Losungen beim Dreikorperjoroblem in der Xahe der Librationszentra. Henkel. 19374. Periodic orbits. Lambert. Sur une forme des equa- tions du mouvement d'une pethe planete. C.R., 151, (1021). Laves. 19637. Inner potential forces in astronomy. [Abstract.] 19638: The prolilem of three botiies from the stand- point of spectroscopy. [Abstract.] MacMillan. An integrable case in the restricted problem of three bodies. A.J., 27, (Uj. Theoretical Astronomy. 141 1330 1250 GENERAL PERTURBA- TIONS ; PLANETARY THEORY IN GENERAL. Brendel. 18778. Theorie der kleiiieu Planeteu. Darwin. 18972. Scientific papers. Vol. IV. Periodic orbits and miscel- latieous papers. Gyld^n. 19304. Traite analytique des orbites absoluea des huit plauetes principales. T. 2. Innes. Note on certain coefEcients appealing in the algebraic developident of tile perturbing function. M.N., 72, (186) ; 19478 : The algebraical develop- ment of the elliptic perturbative function- used in the theories of the jjlanetary motiou. LoweU. 19693. On the action of planets upon ueighboaiuiig particles. A.J., 26, (171). Nies. Gesetzmassigkeit der Plaiieten- rotation. A.N., 190, (189). Nolke. 19869. Elementare Ablei- tuiig der astronomischen Storungsglel- chungen (II). Schnltz. 20177. Bemerkung zu Nolke* Aufsatz ,, Elementare Ableituug der astronomischen Storungsgleichuu- gen." Stromgren. Theorie der Storungen sonuennaher Kometen, angewandt auf den Kometen 1882 II. A.N., 189, (261). Wilkens. Die langperiodische Ver- anderungen der Bahnform und Bahnlage der kritischen Planeten. A.N., 188, (33). Zeipel, von. 20493. Sur las limites de convergence des coefficients du de- veloppement de la fonction perturbatrice. 20494 : Note snr le calcul des coefficients 7"' de Gylden. 1260 Theory and Numerical Ap- plication (Tables) of Mercury. Boelk. 18738. Darstellung und Priifung der Mercurtheorie des Claudius Ptolemaeus. Diss. Bohlin. Note sur le probleme des deux corps et sur ime integration nou- velle dans le probleme des trois corps. B.A., 28, (113). 1280 Theory and Numerical Application (Tables; of Earth. Hagen. 19308. Ein neuer mecha- nischer Beweis fiir die Umdrehung der Erde. Trabert. 20339. Lehrbucli der kosmi- sclio.n Physik. 1300 Theory and Numerical Application (Tables; of Mars, Carrigan. Terms of the second order in the mean longitudes of Mars and the earth that have the argument 31 — 8M + 4E. A.J., 26, (167). Struve. 20.306. Die Lagc der ifars- achse und die Konstanten im Mars- sj'stem. 1310 Theory and Numerical Application (Tablesj of Minor Planets. Brendel. 18777. Bearbeituug der kleinen Planeten. Djiewulski. 19071. Perturbations seculaires de la petite planete Egerie dues a Taction de Mars. (Polish.) Leuschner et al'd. 19663. Tables of minor planets discovered by James C. Watson. Popovlci. Methode abregee pour la correction des orbites. B.A., 28, (33-41). Samter. Ober die allgemeinen Sto- rungen des Planeteu (433) Eros. A.N., 188, (153). 1320 Theory and Numerical Application (Tables) of Jupiter. GaiUot. Theorie analytique et Tables du mouvement de Jupiter jjar Le Verrier. Additions et rectifications. C.R., 151, (1325). Innes. 19476. Le Verrier's theory of the motions of the planets Jupiter and Saturn. 19481 : The motion of the planets Jupiter and Saturn (abstract). 1330 Theory and Numerical Application (Tables) of Saturn. Innes. 19476. Le Verrier's theory of the motion of the planets Ju2:)iter and Saturn. 19481 : The motions of the planets Jupiter and Saturn (abstract). Theoretical Astronomy. 142 1400 1400 Theory of the Moon. Ball. Zur Beieclimm;^ der seleno- zeiitrischen Rektaszension unci Deklina- tion der Sonne. A.N., 190, (21 j. Brown. On the progiess of the npw tables of the moon's motion. M.N., 71, f639j ; The transformation of the moon's latitude, t.e. (651;; 18794: New plans for tabulating the moon's longitude. [A])stract.] Carrigan. The long period term in the mean longitude of the moon -with the argument, 3J— 8M+4E. A.J., 27, ^20). Nicolau. Sur la variation dans le mouvement de la Lune. C.R.,152, (675j. Radau. Les Tables de la Lune, fondees sur la theorie de Delaunav. C.R , 153, (313). Boss. Empirical short-period terms in the moon's mean longitude. M.N., 72, (27;. Wodetzky. 20422. Variation der Mond-Beweginig. (TJngar.) 1450 Theory of Satellites 'exc. Motion of Earth in general. Charlier. 18873. Bewegung der Bahnebenen der Satelliten in unserem Planetensystem. See 20205. Further considerations on the origin of the zone of asteroids and on the capture of satellites. 1460 Theory of Satellites and the King System of Saturn. Birkeland. Les anneaux de Saturne sont-ils dus a une radiation electrique de la planete? C.R., 153,(375) ; 18721 : A new theoiy of Saturn's rings (trans- lated from C.R.). Darwin. 18973. Ebbe und Flut u. verwaiidte Erscheinungen im Sonnen- sy.stem. Wilde. 20407. On the origin of cometary bodies and Saturn's rings. 1500 Theoiy of SatelUtes of Mars. Struve. 20306. Die Lage der ilars- achse und die Konstanten im ilars- svstem. 1520 Theory of SatelUtes of Jupiter. Innes. 19475. Upon the fourth order of perturbations in the motions of satellites III-IV of Jupiter. Wodetzky. 20424. Cber den VIIL Jupitermond. (Ungarisch.) 1530 Theory of Satellites of Uranus. Bergstrand. 18695. Sur le mouve- ment du deuxieme satellite d' Uranus, Umbriel. 1590 SPECIAL PERTURBATIONS ; APPLICATION OF METHOD OF MECHANICAL QUADRATURES. KUnkerfues. 19546. Theoretische Astronomie. 1600 FIGURES OF EQUILIBRIUM OF ROTATIN*; MASSES OF FLUID. Darwin. 18972. Scientific papers. Vol. III. Figures of equilibrium of rotating liquid and geographical investig- ations. 18973 : Eblje und Flut u. verwandte Erscheinungen im Sounen- system. 1610 Figure of the Earth, its Oceans and Atmosphere. Braak. 18769; On tidal forces as determined by means of Wiechert's astatic seismograph. Harkani^. 19336. Minimum der Meridianlange des Rotationsellipsoids bei konstantem Volumen. (Ungar.) Hayford. 19357. The figure of the earth and isostasy from measurements in the United States. 19360 : Supple- mentary investigation in 1909 of the figure of the earth and isostasy. Hecker. 19363. Beobachtungen an Horizoutalpendeln iiber die Deforma- tion des Erdkorpers unter dem Einfluss von Sonne und Mond. 19364: Deforma- tion des Erdkorpers unter dem Einfluss des Mondes nach den Potsdamer Beob- achtungen. Lallemand. 19620. Note sur les marees de I'ecorce et I'elasticite du globe terrestre. Love. 19683. The figure and con- stitution of the earth. Trabert. 20339. Lehrbuch der kosuii- scheu I'Lysik. Theoretical Astronomy. 143 1780 1640 FKUIRR OF THE PLANIOTS (SEPARATELY EOU EACH PEANET). Lowell. On tlie limits of the oLlate- ness of a rotatiii/^ planet and tlio physical deductions fioni them. P.A., 18, (585). 1680 EKiURE OF COMETS AND JIETEORIC STREAMS. Armellim lu Giacomo. Possono le coniete esseie considerate quali feno- moni d'ottica ? A.N., 188, (59j. Reynolds. Note on the two main types of cometary development and their variation with the solar distance. M.N., 72, (28). Seeliger. Einfluss des Lichtdrucks auf die Hewegnng planetarischer Korper. A.N., 187, (417). 1700 Perturbed Rotation : Reaction on otlier Bodies Charlier & Zinner. 1S87.S. Eut- wickelung des Potentials im Rotations- korper. Darwin. 18973. Ebbe nnd Flut u. verwandte Erscheinungeu im Sonnen- system. Pickering. 19981. Planetary inver- sion. [Aljstract.] 1720 Movement of the Poles on the Surface of the Earth- Baldet. 18G08. L'enregistrement photographique de la position du pole. Cookson. 18936. A research on the aberration constant and the variation of latitude by means of a floating zenith telescope. Gautier. 19220. L'association geo- desi(jue Internationale a la conference de Louvres et Cambridge. Hammer. 19328. Die Veriinderlich- keit der geographischen Breiten 1910. 1730 Libration of the Moon. Puiseiix. Sur les formules dohnees dans la "Connaissance de Temps" pour le calcul de la libration de la Lune. B.A., 28, (390-393). 1740 Libration of Planets and Satellites. Brown. On phanetarv librations. A.J., 27, (25). 1750 THEORY OF TIDES. Les marges d^sastreuses. [Ch. 6.] Belgique marit. et colon., 1906, (303- 365). Braak. 18769. On tidal forces as determined by means of Wiechert'a astatic seismograph. Brandt. 18772. Die Flutwelle in Flussiniindungen. Darwin. 18973. Ebbe nnd Flut u. verwandte Erscheinungen im Sonnen- system. Franzius. 19189. Vergleich . der Ebbe- und Fluttheorien. Grassmann. 19271. Gesammelte matliematische nnd physikalische Werke. Bd 3. Tl ] : Theorie der Eiiba und Flut. Priifungsarbeit 1840 und Abhandlungen zur mathematischen Physik. [Analytische Optik ; Undiila- tionstheorie ; Schall — Atheratome.] Harris. 19338. Manual of tides- Part 5. Currents, shallow-water tides, meteorological tides, and miscellaneous matters. [Chapter 1. Flow and resi- stance, pp. 239-266.] Kriimmel. 19593. Handbuch der Ozeanographie. Bd 2. Die Bewegungs- formen des Meeres (Wellen, Gezeiten, Striimungen). Lallemand. 19620. Note sur les marees de I'ecorce et I'elasticite du globe terrestre. Ludwig. 19700. Wie entsteht Ebbe und Flut ? Stok. 20279. Elementare Theorie der liezeiten ; nebst den Gezeitenkon- stanten der wichtigsten Orte des Indi- schen Archij^els und anderer Hafen- platze. (Dbers.j 1770 CONSTITUTION OF THE SOLAR SYSTEM. Sur la formation des Soleils. C.R., 153, (792). Prey. Die Lage der Liicken im Sy- stem der kleinenPlaneten in ihrer Bezie- hiing zu den iibrigen Distanzen im Son- nensystem. A.N., 189, (53). 1780 General Laws of Distribu- tion of Planets and Comets Nolke. ])ie Exzentrizitaten derStern- bahnen in Doppel- und mehrfacheu Sy- stemen. A.N., 190, (33). Sutherland. Bode's law and spiral structure in nebulae. Ajd.J., 31, (251). Theoretical Astronomy. H4 1790 Origin, Stability, Develop- ment of the Solar System. La formation des planetes. [E. B.] Essor econ., Bruxelles, 1907, (4-5j. Andre. Sur la Cosmogonie de La- place. C.R., 153, ^752;. Arrbenius. 18586. Das Weltall. Vortrag . . . 18587 : Das Schicksal der Plaueten. Daxwin. 18972. Scientific Papers. Vol. II. Tidal friction and cosmogony. DuLigondes. 19063. Les hypotheses cosmogoniques et la position du sy- stems solaire dans I'univei's. Godeauz. 19243. Nouvelles recher- ches sur la constitution de I'univers. Nolke. Entwicklung der kosmischeu Nebel. A.N., 188, (353). Poincar^. Remarque sur I'hypothese cosmogonique de Laplace. B.A., 28, (251). Riem. 20082. Unsere Weltinsel.ihr Werden und Vergehen. Eine Darstellung der moderneu Lehren von der Entste- hung und dem Bau des Weltalls. See. Remarks on the problems of cosmogony. A.X., 199, (317). STELLAR UNIVERSE. 1800 GENERAL. Abbot. The brightness of the sky at niwht as observed on Mount Wliitney. A.J., 27, (20). Arrbenius. 18586. Das 'Weltal]. Vortrag . . . Curtis. 18958. Die Entfernungen der f ixsterne. Hougb. 19130. On an infinite uni- verse. [Abstract.] King. Photographic magnitudes of 153 stars. Harv.C, 59, (157). Kopff. 19573. Probleme der Fix- steruastronomie. Mobius. 19798. Astronomie. Grosse, Bewegungund Entferiiungder Hiuimels- korper. Tl 2 : Kometen, Meteore und das Sternsystem. Pickering. Are space and time really infinite ? P.A., 18, (420j. Polncare. Les hypotheses cosmo- goniques. C'.R., 153, (795). 1790 Riem. 20082. Unsere Weltinsel, ihr Werden \\m] Vergehen. Eine Darstel- lung der modernen Lehren von der Ent- stehung und dem Bau des Weltalls. Scbwarzscbild. 20185. Ein Theorem zur Verteilung der Sterngeschwindig- keiten. A.N., 191, (Ij. See. Remarks on the problems of cosmogony. A.N., 189, (317). Slipber. 20233. Peculiar star spectra suggestive of selective absorp- tion of light in space. Townley. 20338. Preliminary note on the total liglit of the stars. [Abstract.] Very. 20367. Stellar revolutions within the galaxy. [Abstract.] Wendel. 20392. Grenzen der Astro- nomie. Wolf. 20445. Die Entfernung der Sterne. Woodward. 20468. The energy of condensation of stellar bodies. [Ab- stract.] 1810 STRUCTURE OF THE UNIVERSE. Boss. Svstematic proper-motions of stars of type B. A.J., 26, (163). Campbell. On the motions of the brighter class B stars. Lick B., 6, (101). Hagstrom. 19312. Sur la distribu- tion des etoiles dans I'espace d'apres leurs spectres. Kapteyn. 19524. Recent researches ill tlie structure of the universe. Russell 20126. Determinations of stellar parallax, " [from j^hotographs taken at the Cambridge oijservatory (England; by Arthur R. Hinks and the writer]." Salet. Sur I'absorption de la lumiere de.s etoiles par les meteorites. B.A.,28, (241-251). Seeliger. 20216. Raumliche Ver- teilung der Sterne im schematischen Sternsystem. 1820 THEORY OF DOUBLE STARS; CALCULATION OF URBITS FROM ORDINARY OR SPECTROSCOPIC OBSERVA- TIONS. (Ephemerides see 7530.) Darwin, Sir George Howard. 18973. Ebbe und Flut u. verwandte Erschei- nungen im Sonnensystem. Practical Astronomy- 145 1900 Klinkerfues. 19540. Theoretisclie Astroiioiuie. Nolke. 19808. Entwicklung der Doppelsternsysteme. [Nebat] Ergiiu- See. The evolution of double and multiple stars. A.N., 190, (39). Zurhellen. Sekundiire Wellen in den Geselnviudigkeitskurven spektroskopi- Bcher Doppelsterne. A.N., 187, (433). 1830 RESISTING MEDIUM, ETHER, TEMPERATURE OF THE UNIVERSE. Davidson. 18975. Theory of grazing collisions ; is it necessary to suppose that impact actually occurs ? Foerster. 19169. Zur Frage des widerstehendeu Mittels. Frost. 19199. Lack of spectroscopic evidence of a dispersion of light in sj^ace. Henkel. 1 9373. Note on the resist- ing medium. Salet. Sur ral)sorption et la diffusion do la lumicre par les meteorites de I'espace intersideral. C.R., 152, (994). Lodge. 19676. The ether of space. See. 20213. Researches on the ero- Intion of the stellar systems. Vol. II. The Capture theorj'^ of cosmical evolutions. (Review by F. W. H[enkel].) Trowtoridge. 20342. The ether drift. Wodetzky. 20423. Dispersion des Lichtes im Weltraum. (Ungarisch.) 1840 MOTION OF SOLAR SYSTEM IN SPACE. Boss. 18765. Precession and solar motion. Third paper. Relation of systematic motions to spectral types. Campbell. On the motions of the brighter class B stars. Lick B., 6, (101) ; Some peculiarities in the motions of the stars, t.c. (125). Comstock. 18918. Preliminary an- nouncement with regard to the proper motions of certain faint stars. [Abstract.] 18919 : The sun's motion relative to a group of faint stars. [Abstract.] 18821 : Apex of the solar motion. [Abstract.] Halm. Further considerations re- lating to the systematic motions of the stars. M.N., 71, (610). (E-2987) Kapteyn & Frost. On the velocity of the sun's motion tiirough space as de- rived from the radial velocity of Orion stars. Ap.J., 32, (83) ;' Correction, op. cit. 33, (86). Lau. Bewegung des Sonnensystems. A.N., 188, (233). Monck. 19800. Le mouvement du systeme solaire dans I'espace. 1850 THEORY OF VARIABLE STARS, INCLUDING NEW STARS. Bickerton. 18703. The new astro- nomy. 1. The story of Nova Persei. II. Double and wonder stars. III. Star clusters and nebulje. IV. The galaxy and an immortal cosmos. V. The sun. Mulder. 19821. Fine neue Hypo- these ul)er einzelne Typen von veriinder- lichen Sternen. I860 THEORY OF NEBULAE AND CLUSTERS. STELLAR SYSTEMS. Archenhold. 18579. Die spirnlige Struktur der Nebel. Darwin. 18973. El:.be und Flut u. verwandte Erscheinungen im Sonnen- system. Nolke. Entwicklung der kosmischen Nebel. A.N., 188. (353); Die Exzen- trizitiiten der Sternbahnen in Doppel- und mehrfachen Systemen. op. c'lt. 190, (33). Plassmann. 20001. Milchstrasae und Nebelflecke. Sutherland. Bode's law and spiral structure in nebulae. Ap.J., 34, (251). Very. Are the white nebulae galaxies ? A.N., 189, (441). PRACTICAL ASTRONOMY. OBSERVATORIES, INSTRUMENTS AND METHODS OF OBSERVATION. 1900 GENERAL. Photographic fundamental astronomy. Observatory, London, 34, 1911, (233). Cooke. Standard astronomy. M.N., (152) ; 18934 : A proposed new method in fundamental astronomy. Practical Astronomy. 14G 1900 Curtis. 18959. Astronouiical pro- blems of the southern hemisphere. [Re- print.] Grossmaim. Zur Hersteliung einer parallaktischeu Durchmusteruiig des Himmels. A.N., 188, (65). Hough. 19432. Photography an aid to astronomy. Lakits. 19615. Astrophysikalische Instinimente und Forschungen. (Unga- risch.) Turner. On the determination of places of (I) reference stars and (2) fundamental stara by photographic methods. il.N., 71, (416). PRACTICAL ASTRONOMY. 2000 OBSERVATORIES (GENERAL). Meissner. Die giinstigste Beobach- tungszeit in Potsdam. [Bewolkung.] A.X., 187, (75). 2010 HISTORY, SITUATION, DE- SCRIPTION, REPORTS, PER- SONNEL, Etc. British Observatories, Reports. M.N., 71, f490) ; Helwan (1910), t.c. (717) ; (Greenwicii, Cape of Good Hope, Edin- burgh, Armagh, Cambridge, Dunsink, Durham, Gla.sgow, Liverpool, Oxford (Radcliffej, Oxford University, Rugby (Temple), South Kensington (Royal College of Science), South Kensington CSolar Physics), Stonyhurst Wolsingham (Espin's), Sutton fNewbigin's), Rousdon (Peck's), Ashtead (Phillips') Harborne (Rerriolds'j, Crowthorne (Saunder's), Kodaikanal and Madras, Adelaide, Perth (W.A.), Sydney, Windsor (X.S.W. Tebbutt's), Lovedale (S. Alrica, Roberts'), Johannesburg), op. eit. 72, 1912, (265- 295). Melbourne Observatory. Report of Astronomer for 1909-1910, [1911]. Observatoire Setif. [Lage.] A.N., 189, (343-344). Solar Pm'Sics Observatory. Obser- vatory, London, 34, 1911, (400-402, 444-445); Nature, London, 88, 1912, (13-15,43-45, 84, 151). SwASEY Observatoky, Denison uni- versity. GranviUe, 0. P.A., 18, (480- 483, with illustr.). Sydney Observatory. Observatory, London, 34, 1911,(117-118). Astronomy in Australia. ()bserva- tory, London, 34, 1911, (359-304). Les laboratoires scientifiques du mont Rose. [M.V.D.V.] Ciel et Terre, Bru- xelles, 1911, (365-368). Abetti. 18509. L'Observatoire astrouomique d'Arcetri. BaiUaud. Presentation du 22* " Bulletin clironometrique de I'Observa- toire de Besangon." C.R., 152, (815); Presentation de deux Volumes des Annales de I'Observatoire de Paris. [Observations des annees 1893 et 1905.] op. cit. 153, (791). BanacMewicz. Un observatoire prive en Pologue. A.N., 191, (15). Bassot. Sur le 14° volume des An- nales de I'Observatoire de Nice. OR., 153, (583). Bemmelen, van. 18678. Royal magnetical and meteorological 01)serva- tory Batavia. Annual report for 1910 [Observations of solar spots ; Researches on the higher strata of the atmosphere ; Tidal observations.] (Dutch). Campbell. [Lick observatory report.] A.S.P., 22, (216); 18832: The D. 0. Mills expedition. [Abstract.] Christie. Report of the Astronomer Royal to the Board of Visitors of the Royal Observatory, Greenwich, lead iit the annual visitation of the Roval Obser- vatory, 1910 June 18. Gr.O."l909, (1- 30). Damry. 18971. Visite des instal- lations du service astronomique de I'observatoire royal d'Uccle. Delvosal. 18988. L'Observatoire royal de Belgique ; aperpu historique. De Moidrey. 18991. L'observatoire de l.eukia])aiig. Deslandres. [Sur le Tome IV des Annales de Meudon.] C.R., 153, (750). Donner. 19041. [Astrophotogra- phische Arbeiten Helsingfors.] (Schwe- disch.) Garrido. 19217. Les observations solaires a l'observatoire astronomique de Cartuja (Grenade). Greenwich Royal Observatory. 19282. Astronomical observations made in the year 1909. Edinburgh, 1911. Instruments. 147 2040 Hadden. An amateur's observatory. P.A., 18, mi). Howe. Chamberliu observatory, Universitv Park, Colorado. [Report, 1909.] A.S.P., 22, (191). Hussey. 19447. Improvements in theobservatory at Ann Arl)or. [Abstract.] Jacoby. 19485. Recent astronomical work at Columbia university. [Abstract.] Jonckheere. Sur la longitude de I'oljservaloire de Lille determinee par telegrai)liie sans fil. M.N., 72, (187). Linssen. 191)72. L'astronomie h, Anvers. Mier y Teraa. 19776. Las observa- tions sola! res al'observatoire de Grenade. Perrine. The National observatoiy of tlxe Argentine Republic. A.S.P., 22, (205). Pickering. 19974. Sixty-fifth annual report of the Dii-ector of the Astrono- mical observatory of Harvard college for the j'ear ending September 30, 1910. Eicco. 20078. The work of the Catania astrojjliysical observatory. [Ab- stract.] Rosenberg. Eine neue Sternwarte [in Tubingen Osterberg]. A.N., 189, (365). Rosy. 20115. L'observatoire d'Uccle. Schnorr. 20174. Sternwarte in Bergedorf. Bericht fiir das Jahr 1909. See. Naval observatory. Mare Island, California. [Report, 1909.] A.S.P., 22, (190). Snyder. 20248. The Philadelphia observatory. [Abstract.] Updegraff. 20357. The work of the Nautical almanac office. Upton. 20358. The position of the Arequipa station of the Harvard college observatory. [Abstract.] 2020 OBSERVATORY BUILDINGS. Scheel. Langeniiuderungen von Mauerwerk in Abhangigkeit von der Zeit. A.N., 189, (229) ; 20151 : Die Di- ruensionsanderungen gemauerter astro- noinischer Pfeiler bei der Erhartung des Bindematerials. (E-29S7) 2030 INSTRUMENTS ^GEXER.ALj. Old Instruments, Astrolabes, etc. Butler. 18819. The turret equatorial refractor : a new combined telescoj)e and dome. Flammarion. 19158. La premiere observation telescopique et I'iuveMtion des lunettes d'approche. 2040 OBJECTIVES (LENSES, MIRRORS) : CALCULATION, PRACTICAL WORK, EXAMINA- TION OF SURFACES, MOUNT- ING IN TUBE, OPTICAL SUBSTANCES, GLASS AND MANUFACTURE OF GLASS, COMPARISON OF REFLEC- TORS AND REFRACTORS. Optical Matters, Images, Dia- phragms. Screens, Visual Refractors. Photographic Refractors. Photographic Doublets Mirrors. Archenhold. 18580. Der 60-z6llige Reflektor der Carnegie-Sonnenwarte auf dem Mount Wilson. Barnard. 18629. Astronomical photography with small lenses. [Ab- stract.] 18630 : Portrait-lens ^Dhoto- graphs. [Aljstract.] 18641 : On a quick visual method of redetermining the focus of a large visual refractor when used for photography with a colour-screen. [Abstract.] Boegehold. 18737. Eine spezielle Art vou Korrektionslinsen. Curti3S. 18964. The focal curves of the single-material camera doublet of the single-prism spectrograph of the Detroit observatory. [Abstract.] Fauth. 10143. Gedanken iiber die leistuiigsfahigste Objektivolfirang. Franklin- Adams. 19185. Prevention of dew-deposit on glass surfaces. Goss. New form of reflecting tele- scope. P.A., 18, (443). Grossmann. Zur Positionsbestim- mung heller Sterne [unter Benutzung einer Lamelle vor dem Objektiv eines Fernrohres]. A.N., 189, (161). Hnatek. 19401. Das38cm-Objektiv des Rothschild-Coude der Universitats- sternwarte Wien. Hulbert & Bacon. 19438. A liquid concave mirror. L 2 Instruments 148 2040 Peters. 19933. The photoheliograph of the U.S. naval observatory ; its use and defects in star photography. [Ab- stract.] 19934 : Ou the construction of astronomical photographic objectives at the U.S. naval observatory. [Abstract.] Plaskett. 1 9994. The effect of faulty coUimation of the correcting lens on the star image. [Abstract.] Poor. 20017. A possible form of mirror for reflecting telescopes. [Ab- stract.] Roe. Acliromatic and apochromatic. Comparative tests. P.A., 18, (193). 20103 : Achromatic and apochromatic comparative tests. Preliminary com- munication. [Abstract.] SouthaJl. Abolition of two of the sp'.ierical errors of a thin lens-system. Ap.J., 33, (330). 2050 EQUATORIAL MOUNTINGS (DE.SCRIPTION, Etc.) AND DRIVING CLOCKS. Bird. 18720. A home-made mount- ing for an 8i-in. equatorial reflector. Clemens. 18903. G. J. F. Schrader uud seine Spiegelteleskope. Doolittle. 19052. Determination of adjustment errors for the polar axis of an equatorial. [Abstract.] Path. The sixty -inch reflector of the Alt. Wilson solar observatory. P. A., 18, (fi5). _ __ Knorre. Montierung von Aquatorealen nach Knorre und Heele. Zusammen- stelliing von Leitsiitzeu fiir die Kon- struktion. A.N., 188, (273;. Plaskett. 19991. The coelostat telescope of the Dominion observatory. [Abstract.] Poor. 20019. The photoheliometer. [Abstract.] 2070 MERIDIAN INSTRUMENTS (MOUNTING AND DESCRIP- TION). Transit Circle, Visual and Photo- graphic. Zenith Telescope. Visual and Photographic- Other Meridian Instruments- Ambronn. 18546. Neues DurcLgangs- Instriiinent fiir die Bestimmuug funda- mentaler Rektaszensionen auf photo- graphi&chem VVege. Doolittle. 19047. The reflex zenith tulje. [Abstract.] 19049 : Illumination of the reflex zenith tube. [Abstract.] Hedrick. 19366. The photochrono- graph. [Abstract.] Hough. 19427. The mounting of fixed meridian instruments. [Abstract.] Schwarzscliildu.DziewulBki. 20186. Bestimmung der Polhohe von Gottingen und der Deklinationen von 375 Zenith- sternenmitder hiingendenZenithkamera. Trtimpler. 20345. Eine Methode zur photographischen Bestimmung von Meridiandiuchgiingen. Diss. 2080 Extra- Meridian Instruments for Absolute Position- ALMUCANTAR. Howe. 19434. The almucautar as an instrument for the determination of time. [Abstract.] 2090 SMALL PORTABLE IN- STRUMENTS (SEXTANTS, Etc.). Le telenietre Mercemier. Milit., Bruxelles, 1905, (84-S5). Bisman. 18733. Le telemetre Stroo- bants, sa theorie complete et son emploi. 2100 AUXILIARY INSTRU- MENTS. Clocks, Chronometers, Watches, Chronographs, Circles Gradua- tion, etc., Levels, Mercurial Horizon. Geeekwich Royal Observatory. Rates of box and pocket chronometers on trial for purchase by the B(jard of Admiralty, at. Box chronometers from 1909 June 19 to 1910 January 8. Pocket chrono- meters from 1909 July 31 to 1909 November 20. Gr.O., 1909, (9-f 7). Eiclielberger. 19101. Les horloges anciennes et modernes. 19102 : A Riefler clock and a self-registering right ascen.sion micrometer. [Abstract.] 19103 : The standard clock of the U.S. naval ob- servaiorj'. [Abstract.] Esclangon. Sur un regulateur rotatif a vltesse fi.xe ou variable. C.R., 152, ('6'- 1 ; Sur un systeme de synchronisation fixe ou differentielle. t.c. (170). Hough. 19428. A new form of meridian mark. [Abstract.] instruments- 1^9 Howe. 19433. A comparison of printing and recording chronographs. [Abstract.] & Brown. 19135. Tiie clocic loom of the Case observatory. [Abslract.] Kolbow. 19570. Einfacher Weg zur Vergleiclmng von Uhrstaiulen. Mallock. 19735. Pendulmn clocks and their errors. Snyder. 20247. The photochrono- graph and its advantages in certain astronomical observations. [Abstract.] Stroele. 20286. Compensation k mercure dans les pendules d'horloges astronomiques. Tillyer. The clock vault of the U.S. Naval Observatory. P.A., 18, (100). Todd. 20328. On an effective insu- lation of mercurial horizons. [Abstract.] Wanach. Genauigkeit interpolierter und exirapolierter Uhrkorrektionen und Gange. A.N., 190, (169). Wolf II. Ernst. 20447. Der Gang der Hauptuhren der Sternwarte. Zinner. Die Einwirkung des Erdbe- bens vom 16. Nov. 1911 auf die LIhren der liemeis-Sternwarte zu Bamberg. A.N., 190, (155). 2120 EYEPIECES AND ACCESSORIES. Eyepieces, Illumination, Screens, Solar Eyepieces, etc- En- larging Lenses, Correcting Lenses, etc Photographic Plate Holders, Exposing Shutters, etc Fox. 19181. The use of quartz fibres for micrometer wires. [Abstract.] 2130 PHOTOGRAPHIC APPAR- ATUS, MATERIALS AND PROCESSES, PLATES, DE- VELOPMENT, STORAGE OF PLATES AND NEGATIVES, FADING OF IMAGES. Damry. 18970. Epreuves reversiljles ; photographies integrales. Hnatek. 19402. Astrouomie und Astropliysik. Pickering. Curved phot )graphic plates. Harv.C, 161, (1). 2140 Ritchey. Methorls and results in dii-ect photography with the (iO-inch reflecting telescope of the Mount Wilson solar observatory. Ap.J., 32, (20). Rudaux. 20117. f.a photographie astronomique a I'aide de petits instru- ments. Schell. 20153. Photographisch- photometrische Absoiptionsmessungen an Jodsilber im ultravioletten Spektruin. Stepbani. 20272. Ilimmelsplioto- graphieiniteinfachenMitteln.Vortrag . . . 2140 MICROMETERS. For Visual Telescopes- Self- registering, for Transits, for Measuring Photographs. Solar and Stellar. Stereo- comparator. Backeljan. 18590. Losange articule pour rnesurages, traces et arpentages ordinaires. Ball. Eine Verbesserung bei der Ausmessung photographischer Flatten. A.N., 190, (37). Curtiss. 18963. The spectrograph measuring engine of the Detroit ob- servatory. [Abstract.] Dokulil. 19038. Neue Ablesevor- richtungen fiir Teilkreise. Eicheltoerger. 19102. ARieflerclock and a self-registering right ascension micrometer. [Abstract.] Flint. 19165. The Repsold transit micrometer of the Washburn observatory and slat screen apparatus. [Abstract.] Goos. 19267. Ein 'J'oepferscher Messapparat fiir Spetrogramme. Grossmann. Zur Positionsbestimmung heller Sterne [unter Benutzung einer Lamelle vor dem Objektiv eines Fern- rohres]. A.N., 189, (161). Hayford. 19359. The test of a transit micrometer. [Abstract.] EuM. Zur Ei-hohung der Einstel- lungsgenauigkeit auf iiberesponierte Sterubilder durch Benutzung von Beugungslamellen. A.N., 189, (329). Newkirk. 19834. The Repsold measuring apparatus of the students' observatory, Berkeley, Cal. [Abstract.] Simon. Petit dispositif pour le poin- tage rapide des microscopes. A.N., 190, (191). Spectroscopes 150 2200 2200 SPECTROSCOPIC APPARATUS. Fabry & Buisson. Application of tlip interference nietijorl to the stiidv of nebula?. Ap.J., 33, (-106). Fery. A prism with curved faces, for sjiectrograph or spectroscope. Ap.J., 34, (79). Michelson. 19774. Recent progress in spectroscopic methods. Plaskett. 19992. Camera objectives for spectrographs. [Abstract.] 2220 Spectroscopes and Spectro- graphs- Solar Eclipse, Stellar, and for Study of Nebulae- Ocular Spectroscopes- Campbell- 18S30. A description of the second (Chile) ilills spectrograph. [Abstract.] Curtiss. 18962. On differential flexure in the single-prism spectrograph. [Abstract.] Poor. 20018. Tlie diiect grating spectroscope. [Abstract.] 2240 PRISM COilBIXATIONS WITH DEVIATION. PRISM COMBINATIONS WITH DIRECT VISION SLIT. Plaskett. 19995. The width of slit giving maximum accuracy. [Abstract.] 2250 AUXILIARY APPARATUS. PRODUCTION OF COMPARISON SPECTRA. CORRECTING LENS FOR SPECTROSCOPIC OBSER- VATIONS. Frost. 19195. Notes on the reduction of stellar spectra. [Abstract.] King. Transformation of prismatic to normal si^ectra. Harv.C, 59, (205). Plaskett. The collimation of the cor- recting lens. Ap J., 32, (243). Wright. 2U471. A simjile method of inserting the comparison spectrum in spectrographic observations. [Abstract.] 2260 MICROMETER FOR VISUAL OBSERVATIONS. MICROMETER FOR MEASURING PHOTO- flRAPHlC SPECTRA. MISCEL- LANEOUS. Goldstein. 19247. Zur Orientierung an Spektrogrammen. 2270 Spectroheliograph and Apparatus for Monochromatic Images. Evershed. Tlie auto-collimatingspec- tro-lieliograph of the Kodaikanal Ob- servatory. M.N., 71, (719, witli pis.). Guthnick. 19303. Neuere Methoden der Soniieuforschung. Hale. 19310. Some new forms of spectroheliographs. [Abstract.] PokrowsM. Das Spektrohelioskop. (AstionoiuischerMonochromator.; A.N., 189, (309). 2300 POLARIZATION APPARATUS. Salet. 20131. Sur I'etude de la polarisation en Astronomic. [These.] 2400 PHryrOMKTRY, GENERAL. Visual. Photographic- Spectro- Photographic- photometry. Goldberg. 19210. Die Herstellung neutral grauer Keile und verlaufender Filter fiir Photometric und Photographic. Grossmann. Zur Positionshestim- mung heller Sterne [unter Beuutzung einer Lamelle vor dem Objektiv eines Fernrohres]. Hartmann. 19344. Bemerkung zu Lehmanns Aufsatz : ,,Eine neue Photo- meterkonstruktion". 19315 : Berichti- gung zu Lehmanns Erwiderung. Hertzsprung. Photographische Schwiirzungskurve. A.N., 190, (119). 19385 : Verwendung photographischer effektiver Wellenlangen zur Bestimmung von Farbeuaquivalenten. Hnatek. Bestimmung einiger effek- tiver Sterntemperaturen und relativer Sterndiirchme.sser auf spektralphotogra- phischem Wege. A.N., 187, (369). 19402 : Astronomie und Astrophysik. Eoch. 19503. Messnng dsr Intensi- tatsverteilung in SpektralJinen. I. Mit Anwendungen auf Interferenzspektro- skopie. Zum Teil gemeinsam mit Anton Ernst Weber. 19504 : Zalil der Zeutren von Lichtemission und Intensitatsver- haltnis verschiedener Interferenz- ordnungen. Bemerkung zu einer Arbeit von SUirk. [Photographisches- photometrisches Messverfahren.] Transit Circle. 151 3070 Lehmann. lOCJC). Erwidening auf Hartiiiauns Beiiierkuiig zii deiu Aufsatz iUier ,,lMne iieiie Photometerkoiistnik- tion." Nacli geineiiisaineu Versuclien mit A. Miethe. Leimbach. 19(M8. Variiert p mit \ ? Benierkmig zn Starks Arbeit iiber : „Das Schwarzungsgesetz der Nornial- beliclituug". Mees. On the ratio between the diameter of the photographic image of a point and the exposure which produced it. Ap.J., 33, (SI). Miethe. 19777. Neuer Schwiirzungs" messer fiir Negative. Parkhurst. 19908. Precautions neces- sary in photographic photometry. [Ab- stract.] Pickering. 19970. A new form of stellar photometer. [Abstract.] Fracka. 200.30. Lichtveranderungen bei veranderlichen Sternea. II. 2. (Czechisch.) 20031 : Bahnuntersuchung des pliotometrischen Doppelsystems RZ- Aurigae. Teil 1. Reduction photometri- scher Beobachtungen. (C-zechisch.) 20032: u-Herculis. (Czecliisch.) Scbell. 20153. Photographischphoto- metrische Absorptionsmessungen an Jodsilber im nltravioletten Spektrum. Shakespear. 20217. A new method of determining the radiation constant. Stark. 20257. Das Schwarzungsge- setz der Normalbelichtung und photo- grapliische Spektralphotometrie. Stebbins. The measurement of the light of stars with a selenium photo- meter, with an application to the varia- tions of Algol. Ap.J., 32, (185). Strehl. Die Leistnngsgrenzen und Empfindungsstarke tmseres Sehorgans bei Abbildung von Fixsternen und Planeten mit und ohne Fernrohr. A.N., 188, (.385). Terkan. 20317. Uber die plioto- grapiiische Extinktion der Luft bei verschiedenen Wellenliiugen. (Un- garisch.) 20318 : Die Helligkeit des Volhnondes zur Zeit der totaleu Mondes- finsternis vou 16. November 1910. (Ungarisch.) 2500 RADIOMETRY (BOLOMETRY). London Royal Astronomical Society, Council of. Selenium photometry. M.N., 72, (330-337). Abbot. 18496. The silver disk pyrheliometer. & Aldrich. The pyrhelio- metric scale. Ap.J., 33, (125). Angstrom. 18555. A simple method for determining nocturnal radiation proposed by K. Angstrom. [TransL] Harkanyi. 19337. Strahlung und Temperatur der Sterne. 2600 MISCELLANEOUS. Cadran solaire universel de Fuess. Ciel et Terre, Bruxelles, 1910, (365-367). Benham. 18683. A simple method of constructing a horizontal sun-dial. Burns. 18813. Measuring the lu- minosity of the sky. Cooke. The new sun dial or helio- chronometer. P. A., 18, (607). Grossmanu. Zur Positionabestimmung heller Sterne [unter Benutzung einer Lamelle vor deni Objektiv eines Fern- rohres]. A N., 189, (161). Souchon. 20251. Les cadrans so- laires. Struve. 20305. ^'orteile der An- weudung eines Reversionsprismas bei Doppelsternmessungen. Todd. 20329. On the founding of astronomical and other instruments of precision. [Abstract.] Wanacli. Zur Anwendung des Re- versionsjorismas. A.N., 188, (11). Wedemeyer. 20385. Instrumente zur Auswertung von Gestirnshohenbeob- achtungen in der Karte. Whiting. 20396. A solar plani- sphere. [Abstract.] OENERAL REDUCTION AND RECTIFICATION OF OBSERVATIONS. 3030 GENERAL. Jacoby. 19487. A theorem concern- ing the method of least squares. [Ab- stract.] 19489 : Use of tiie method of least squares to decide between con- flicting hy^iotheses. [Absti-act.] 3070 TRANSIT CIRCLE. OTHER MERIDIAN INSTRUMENTS. Davis. 18981. Some vices and de- vices in astronomical computations. Abstract.] Transit Circle. 152 3070 Ross. On the instrumental constants of a zenith telescope. A.N., 190, (19;. Trllmpler. 20345. Eiue Methode zur photograpliischen Bestimniung von Meridiandurchgaugen. Diss. 3080 ALTAZIilL'TH. ALMU- CANTAR. OTHER EXTRA- MERIDIAN INSTRUMENTS. Cooke. Fundamental astronomy : a suggestion. il.N., 71, (725j. James. Reduction of Polaris vertical circle observations for time and azimuth. P.A., 18, (92). 3100 illCROMETER, VISUAL AND PHOTOGRAPHIC. Differential refraction tables. Trans- vaal Observatory. Johannesburg, Transv. Observ. Circul., 4, 1910, (36-37). Biske. 18731. Eiu neues Queck- silberniveau. Comstock. Atmospheric refraction near the horizon. P.A., 18, (90). PMlippot. 19939 £tude du micro- metre du cercle meridien de Repsold. 3200 PERSONAL EQUATIONS, INCLUDING MAGNITUDE EQUATION, DECIMAL EQUA- TION ASD ALL PHYSIOLOGICAL CAUSES OF ERROR (IRRADI- ATION, Etc.). Eiclielberger. 19102. A Riefler clock and a Belf-regi.-!itering right ascension micrometer. [Abstract.] Gilntber. 19291. Reaktionsversuche bei Durchgangsbeobachtungen. Eiihl. Are the white uel)ulae ga- laxies ? A.N., 190, (449J. Pritchett. 20039. Personal equation in longitude dett-rniination. [Abstract.] SeaJTle. 20194. Personal equation in tran-sit observations. [Abstract.] Strehl. Die Leistungsgrenzen und Ernpfimlungs.starke unseres Seiiorgans bei Abbildung von Fixsternen und Pla- neten mit und ohne Fernrohr. A.N., 188, rss:. . Tliackeray. Bright clock stars — night rersus day. M.N., 71, 1,472). Personality and bisection-error of some Greenwich transit-circle observers, op. eil. 72, (178). 3220 ERRORS OF SCREWS, CIRCLES, Etc., FLEXURE. Anderson. 18548. On a method for testing screws. Briick. Sur la flexion de la lunette meridienne de r01)servatoire de Be- san^on. Determination de sa latitude k I'aide de passages superieurs et iiife- rieurs de circompolaires. B.A., 28, (193j. King. 19538. A study of the driving- worms of several photographic tele- scopes. [Abstract.] 3250 REDUCTION OF CELES- TIAL PHOTOGRAPHS, ERRORS OF MEASURES. Albrecht. 18537. Distortions of photo;^raphic films on glass. [Abstract.] Frost. 19195. Notes on the reduc- tion of stellar spectra. [Abstract.] Gibson. On the errors of measure- ment on photographic plates. M.N., 72, !l27j. Jacoby. 19486. Optical distortion of photographic telescopes. [Abstract.] 19488 : Comparison of astronomical photographic measures made with the reseau and without it. [Abstract.] Newkirk. 19833. Tables for the reduction of photographic measures. [Abstract.] Pickering. Accurate measurement of photographs. Harv.C, 155, (Ij. Reese. 20070. A determination of the cause of the discrepancy between measures of spectrograms made with violet to left and with violet to right. [Abstract.] ScMesinger. 20162. On the dis- tortions of photographic films. [Ab- stract.] Terkan. 20317. Uber die photo- graphische Extinktion der Luft bei ver- schiedenen Wellenlangen. (Ungarisch.) Turner. The determination of differ- ential star places by photographic methods. First paper. ' M.N., 72, (91) ; 20350 : The distortion of photographs made with the Bruce 24-inch photo- graphic telescope. [Abstract.] Zurhellen. Ein Beitrag zur Kenntnia des Stundenwinkelfehlers astrophoto- graphischer Aufnahmen. A.N., 187, (05). Sun 153 4010 DESCRIPTIVE ASTRONOMY AND ASTROPHYSICS. OBSERVATIONS. 3290 GENERAL COSMOGONY. Useful work for a small equatorial. A proposed diacuasiou. A. A. A., 1, (232). Arrhenius. 18587. Das Schicksal der Plaueteu. Belot. 18676. Essai de cosmogonie tourbillonnaire. L'origine dualiste des moudes. Bosler. 18760. Les recants progres des Luethodes astro-physiques aux Etats- Unis. 18701 : Recent progress in astro- physics in the United States. [Transl.] Campbell. Some peculiarities in the motions of the stars. Lick B., 6, (125). Peter. 19938. Die Aufgabeu der messeuden Astronomic. Poincar^. 20010. Logons sur les hypotheses cosmogoniques professees a la Sorbonne (cours de la Faculte des sciences de Paris), redigees par Henri Vergne. See. 20203. Results of recent re- searches in cosmlcal evolution. Very. 20365. A cosmic cycle. [Ab- stract.] Determination of Astronomical Constants by Observation 3300 GENERAL. Comstock. 18910. The principle of relativity. Eddington. Discussion of the Green- wich retiex zenith-tube observations, 1906-1909. M.N., 71, (511). 3320 CONSTANT OF PRECES- SION AND NUTATION. Jacoby. 19185. Recent astronomical work at Columbia university. [Abstract.] Laves. 19636. On the determination of the constant of nutation from helio- meter observations of Eros. [Abstract.] DETERMINATION OF ASTRO- NOMICAL CONSTANTS BY OBSERVATION. 3310 CON.STANT OF ABERRATION. Chandler. 18872. The probable value of the constant of aberration. [Abstract.] Cookson. 18936. A research on the alierration constant and the variation of latitude by meaus of a floating zenith telescope. Doolittle. 19015. The constant of aberration. [Abstract.] 19016 : Tlie constant of aberration from observations with the zenith telescope, 1901-1902. [Abstract.] Hall. 19322. The aberration con- stant from meridian zenith distances of Polaris. [Abstract.] Jacoby. 19185. Recent astronomical work at Columbia university. [Abstract.] Rees. 20068. The work of Columbia university observatory. [Abstract.] 3350 xMISCELLANEOUS. RE- FRACTION. Ball. Uber einen prinzipiellen Fehler des zur Bestimmnng des Ausdeimungsko- effizienten der Luft iiblichen Verfahrens. A.N., 189, (313). Chase. 18879. Refraction of red stars. [Abstract.] Degner. 18982. Neue Untersuchun- gen iiber die Grosse der terrestrischen Refraktion unter Verwertung des Beob- achtungsmaterials der Koniglich Preus- sischen Landesaufuahme. Diss. Saude Bakhuyzen, van de. 20137. Bestimmung der Refraktion auf Grund- lage der aus den Beobachtungen wiihrend Luftschiffahrten abgeleiteten Temperaturgradienten. 4000 SOLAR SYSTEM. GENERAL. Les temperatures des planetes et du soleil. R. des sciences et de I'indust., 1905. Deslandres. lonisation des gaz so- laires. Relations entre le rayonnement et la rotation des corps celestes. C.R., 153, (10). Slocum. Physik der Sonne, E. Pringsheim. [Review.] Ap.J., 32, (100). SUN. 4010 GENERAL. Ephemeris of the Sun and Polaris and tables of azimuths of Polaris for the year 1912. A supplement to the Jlanual of surveying instructions for the survey Sun. 151 4010 of jHiblic lands of the Uuited States, published under the direction of Fred Dennett, Commissioner of the general land office. Washington (Govern'uent printing office), 1911, (16). 24.5 cm. L'avenir da soleil. [P. D.] Jard. Sante, Bruxelles, 1907, (53-5oj. Pourquoi le soleil chauffe. [F. C] Rev.nephol., Bruxelles, 1911, (537-538). London Royal Astrokomical Society, Council of. Solar research in 1911. M.N., 72, (305-309). Abbot. 18498. The sun. Anderson. 18549. On the application of tlie laws of refraction in interpreting solar phenomena. Deslandres. Explication simple des protuberances solaires et d'autres phe- nomenes par des champs maguetiques tres faibles. C.R., 152, (1433;; Re- marques complementaires sur les champs magnetiques faibles de I'atmo- sphere solaire. t.c. Hoilj. et d'Azambuja. Vitesse de rotation des filaments noirs dans la couche superieure de I'atmosphere so- laire. C.R., 153, (442j. Hale. 19320. Opportunities for solar research. Humphreys. 19440. Planetai-y mag- netism of the sun. [Abstract.] Erause. 19582. Die Sonne. Krebs. 19585. Zu der vulkanischen Erkliirung der Sonnentatigkeit. Memery. 19753. Le pouvoir lumi- neux du soleil. Mende. 19755. Fortschritt unserer Kenntnisse iiber die Sonne. (L'ngarisch.) Moreux. 19807. Le soleil. Peene. 19921. Deformation du soleil. Scbulz. Phvsik der Sonne. A.N., 187, (427); 20179: Einige Bemerkun- gen zur Sonnenphysik. WulflE. 20477. Le soleil s'eteindra- t-il uii jour ? 4020 OBSERVATIONS OF POSITIOX. Greenwich Royal Observatory. Right ascensions and north polar distances of the centre of the sun, 1909. Gr.O., 1909, -;i40} , {78\ . 4030 CONSTANTS (DIMENSIONS, MASS, DENSITY, Etc.). Greenwich Royal Observatory. Hori- zontal and vertical diameters of the sun, observed in the year 1909. Gr.O., 1909, ■;i3.3}, {74\. Chevalier. La forme du Soleil. B.A., 28, (32 Ij. Poor. 20020. The figure of the sun and possible variations of its size and shape. [Abstract.] 4050 SOLAR PARALLAX. Moreux. 19805. La mesure de la distance de la terre au soleil ; histoire d'mie conquete astronomique. Wilson. 20416. The Eros parallax photographs at theGoodsell observatory. [Abstract.] 4060 ROTATION. Archenhold. 18569. Bestimmung der Sonuenrotation aus der Bewegung der Fackehi in den Jahren 1906 bia 1908. Chevalier. The solar rotation from the motion of the faculae on the disk (1906-1908). Ap.J., 32, -388). Evershed. 19130. On the angular speed of rotation of a long-enduring prominence. Ap.J., 33, (1). Stroobant. 20298. Nouvelles re- cherclies sur la rotation du soleil. 4070 SPOTS, FACUL.E, CHROMO- SPHERE, CORONA AND OTHER ENVELOPES WITHOUT ECLIPSE. Les taches solaires ; comment les dessine-t-on ? Globe illustre, Bruxelles 1908, (40). Greenwich Royal Observatory, Re- sults of measures made at ; of photo- graphs of the sun taken at Greenwich and in India in the vear 1909. Gr.O., 1909, (xii + i2i). London Royal Astronomical Society, Council of. Solar activity in 1911. M.N., 72, (303). Bemmelen, van. 18C78. Royal mag- net icul and meteorological Observatory, Batavia. Annual report for 1910. [Observations of solar spots.] (Dutch.) Sun-Spots. Birkeland. Le soleil et ses taclies. C.U., 153, (450 j ; Plienomenes celestes et analogies experinieiitales. [lleprocluc- tion electrique d'aspects analogues a ceux ties anneaux de Saturne, de nebu- leuses, des filaments noirs da Soleil.] t.e. (938). Brester Jz. 18780. Du soleil et de ses rayons beta ct gamma, qui causent les auroras polaires, les protuberances et la couronne solaires et les queues des cometes. Delvosal. 18989. Observations so- laires effectiiees a Uccle en 1908. Deslandres. 19010. Recherches sur les niouvenients des couches atiwosphe- riques solaires dans le deplacemeut des raies spectrales. Dissymetrie et parti- cularites du plienomene. C.R., 152, (233). 190l'3: The progressive dis- closure of the entire atmosphere of the sun. [TransL] et Burson. Lois i-elatives aux mouvements de protuberances so- laires. C.R., 152, (1281). Fenjd. Ober schwebeude Protube- ranzen. A.N., 189, (49). Fox. 19180. The distribution of eruptive i^rominences on the solar disk. [Abstract.] Greenwich Royal Observatory. j\Iean areas and heliographic latitudes of sun- spots in the "year 1910. M.N., 72, (3). Guillaume. Observations du Soleil faites a I'Observatoire de Lyon pendant le troisieme triuiestre de 1910. C.R., 151, (1333) ; pendant le quatrieme trimestre de 1910. op. c'lt. 152, (507) ; . . . pendant le deuxieme trimestre de 1911. 02J. cif. 153, (754). Hauet. 19350. Les taches de Copernic. Hoffmann. 19406. Neuere Ergeb- nisse der Sonnenforschung. Krebs. 19584. Neue Entdeckungen der Spektralphotographie der Sonne, bestiitigt durch teleskopische Beobach- tungen mit einera DreizoUer. J 9585: Zu der vulkanischen Erkliirung der Sonnentatigkeit. 19580 : Tiefenunter- schiede von Sonnenfleckeu zusammenge- setzter GrujDpen und andei'e Ausbruchs- erscheinungen der Sonne. 155 4100 Leonard. A polarsunspot. P. A. ,18, (644). Maunder. 19741. An apparent in- fluence of the earth on the numbers and areas of sunspots in the c;ycle 1889-1901. 19744 : The sunspots of 1910 November to 1911 October. Merlin. 19750. La repartition des taches solaires en latitudes heliogra- phiques. ■ et Delvosal. 19757. Ob- servations solaires effectuees a Uccle en 1907. Quimby. Sunspot observations made at Bervvyn, Penn. with a 4^ inch re- fractor. A.J., 26, (100, 183). Scbulz. Physik der Sonne. A.N., 187, (427). Schuster. 20182. The influence of jDlanets on the formation of sunspots. Sp^e et Merlin. 20254. Observations solaires effectuees en 1900. Stephani. Eine mit der Stellung der Erde zusanimenhiingende Gesetzmassig- kelt im Entstehungsort der Sonnen- fleckeu. A.N., 189, (205); Gesetzmassig- keit im Entslehungsorte der Sonnen- flecken. op. cit. 190,(87); 20271: Die Sonnenfleckeu im Jahre 1910. 20273 : Entstehen die Sonnenflecke durch Zy- kloue, oder rufen sie solche hervor ? Wolfer. 20449. Provisorische Son- nenflecken-Relativzahlen fiir das IV. Quartall910. 1., 2., 3. Quartal 1911. Young. Resume of sun-spot observa- tions, 1909. P. A., 18, (128). 4100 PERIODIC PHENOMENA OF SURFACE (SUN-SPOT CYCLE, Etc.). Sommes-nous a I'epoque du mininmm solaire ? [H. M.] Rev. nephol., Bruxelles, 1911, (545-540). Bigelow. 18707. Note on three solar jjeriods. [Abstract.] Schuster. 20181. On the periodicity of sunspots. Stratton. On possible phase-relations between the planets and sunsj^ot iDheno- mena. Papers of the I. U.S.R. computing bureau No. VII. il.N., 72, (9). Terrestrial Phenomena. 156 4110 4110 CONN'ECTIOX OF SOLAR PROCESSES WITH TERRES- TRIAL PHENOMENA. La pluie et les tacbes solaires. Rev. n^phol., BruxelJes, 1910, (407j. Les taclies solaires et la temperature au mois de septenil)re 1911. [H. M.] Gaz. astron., Bruxelles. Bauer. 18656. Solar activity and terre.-trial magnetic disturbances. 18657 : The physical theory of the earth's magnetic and electric phenomena. Brester Jz. 18780. Du soleil et de ses rayons beta et gamma, qui causent les aurores polaires, les protuberances et la coiironne solaires et les queues des cometes. Hauet. 19351. Les taclies du soleil et leur influence sur le globe terrestre. Hecker. 19363. Beobachtungen an Horizontalpendein uber die Deformation des Erdkorpers unter dem Einfluss von Sonne und ilond. Humphreys. Solar disturbances and terrestiial temperatures. Ap.J., 32, (97j. Lagranffe. 19005. La loi de ilar- chand. Magelssen. 19729. Elfjahrige Tem- peraturperioden. (Im Zusammenhang mit den elfjahrigen Sonnenfleckenperio- den.j 19730: Fiinfjaiirige Temperatur- perioden. (Im Zusammenhang mit den Sonnenflecken.) 19731 : Einjiihrige Temperaturfiuktuationen. (Im Zusam- menhang mit den Sonnenflecken.) Meissner. Der Einfluss der Sonnen- fleckenhaufigkeit auf das Klima von Berlin. A.N., 189, (371j. M^mery. 19751. L'action solaire en meteorniogie. 19752 : Les grands hivers et les grands etes ; coincidences remarquabies avec les periodes solaires. 19754 : Influences solaires. Nodon. 19864. Les raj'ons coronaux et Taction electrique du soleil. 19865 : Relations entre I'activite solaire et la charge electrique terrestre. Palmer. The influence of sun-spots upon climate. P.A., 18, (8j. Scbulz. Physik der Sonne. A.N., 187, 427 . Schuster. 20180. The origin of magnetic storms. 4200 TEMPERATURE, BRIGHT- NESS, RADIATION, BOLO- METRY. Abbot. 18493. The solar constant of radiation. The sun's energy-spectrum and temperature. Ap.J., 34, (197). 18495 : L'ntersuchungen iiber die Sol.ir- konstante am astrophysikalischen Ob- servatorium der Smithsonian Institution. & Fowle. 18500. Note on the reflecting power of clouds. The value of the solar constant of radiation. Ap.J., 33, fl'Jl). Baume-Pluvinel, A. de la. 18660 Solar-radiation researches bj' Jules Cesar Janssen. [TransL] Bigelow. 18708. Studies in the general circulation of the atmosphere. Radiation from the sun and temperatures in the earth's atmosphere. Dahmer. 18960. Wieentstandendie Mondgebirge? Freer. 19192. The tropical sunlight. [Presidential address. Far Eastern asso- ciation of tropical medicine.] Humphreys. 19441. A proposed method of studying solar radiation at great altitudes. [Abstract.] Kimball. 19534. Solar radiation, atmospheric absorption, and sky polari- zation, at Washington, D.C. [With bibliograjjhy.] Kurlbaum. 19601. Messung der Sonnentemperatur. Millochau. 18781. La temperature du soleil. Ramond. Resultats de mesures photo- electriques [de la radiation solaii-ejfaites a Antibes pendant I'annee 1911. C.R., 154, (45). Scheller. 20154. Strahlung und Teinperatur der Sonne. Schulz. 20178. 20179. Sonnenphysik. Wilsing. the stars." "On the temperatures of Ap.J., 33, (85). 4210 ECLIPSES. Eclipse totale de soleil des 3-4 Janvier, invisible a Anvers. Gaz. astron., Bru- xelles, 1908, (5-9). L'eclipse totale fle soleil du 30 aoiit 1905. Ciel et Terre, Bruxelles, 1905, (273-284j ; 1906, (600-604). Terrestrial Phenomena. 157 4350 L'eclipse totale du 3-4 Janvier 1908 ; I'eussite partielle des ohservitions. Gaz. astron., Bruxelles, 1908, (U-15). Total solar ecHiJse of May 28, 1900. (General discussion.) A. A. A., 1, (IIG- 130). Bigourdan. 18709. Resume des observations a Sfax (Tunisie). Butler. 18818. The total solar eclipse, April 28, 1911. Campbell. 18833. Observations of tlie total solar eclipse of January 8, 1908. [Abstract.] Damry. 18909. L'eclipse totale de soleil du 30 aoiit 1905 k Burgos. Dodwell., 19037. The total solar eclipse of 1911 April 28. Lockyer. 19675. The British solar eclipse expedition. Lynn. 19715. The solar eclipses of A.D. 540, 664 and 760. 19720: Re- markable eclipses. 11th ed. Moreux. 19806. L'eclipse totale de soleil du 30 aout 1905. Nevm. 19827. On the early Baby- lonian eclipse of the sun. Perrine. 19926. The total solar eclipse of May 18, 1901. [Abstract.] Spee. 20253. L'eclipse totale de soleil du 30 aout 1905. Todd. 20330. Amherst eclipse ex- pedition to Tripoli, 1905. [Abstract.] • & Baker. 20333. The central eclipse of April 13, 1912. [Ab- stract.] 4220 Predictions, Ephemerides, Maps of Shadow Track. Eclipse totale de soleil du 13 Janvier 1907. Bruxelles, Bui. Soc. Astron., 1906, (455-458). Battermann. Vorausberechnungeu der Zentrallinie der Sonnenfinsternis 1912 April 16-17. A.N., 190, (121); Zentrallinie der Sonnenfinsternis 1912 16-17. i.e. (389). Graff. Einige Beraerkungen zur ring- formigen Sonnenfinsternis am 17. April 1912. A.N., 191, (23). Todd & Baker. 20332. Computed tracks and totality-durations of total solar eclipses in the twentieth century. [Abstract.] 4230 Times of Contact (Observations). Badcock et alii. 18596. Observa- tions of the partial phase. (Solar eclipse 1911 April 28.) 4240 Corona. General. Deslandres. 19023. The progressive disclosure of the entire atmosphere of the sun. [Transl.] Dinwiddle. 19030. The forty-foot camera of the U.S. naval observatory eclipse station at Guelma, Africa. [Ab- stract.] Gautier. 19219. Quelques resultata fournis par la photographie astrono- mique. Miller. The position of certain coronal streams on the assumption that the corona is a mechanical product. Ap.J., 33, (303). Perrine. 19928. Polarized coronal light, August 30, 1905. [Abstract.] Stbrmer. Sur la structure de la couronne du Soleil. C.R., 152, (425) ; La structure de la couronne du Soleil, dans la theorie d'Arrhenius. t.c. (571). Wulf et Lucas. 20476. Deux obser- vations faites au moyen du recepteur au selenium lors de l'eclipse totale de soleil du 30 aout 1905. 4300 Corona and Chromosphere. Todd. 20327. On a practical method of photographing the spectrum of the corona in numerous distinct regions. [Abstract.] 4320 Chromosphere. General. Deslandres. Remarques sur lea mouvenients des protuberances solaires. C;R., 153, (221). 4350 Terrestrial Phenomena. Bauer. 18655. Preliminary state- ment of results of international magnetic observations made during the total solar eclipse of May 17-18, 1901. [Abstract.] Flamache et Dehalu. 19157. La meteorologie pendant l'eclipse. Photographs of Sun. 4360 Photographs of Sun O-e. references to pubUshed reproductions . Drawings of Sun 'ditto ditto). Gautier. lUl'I9. Quelques resultats founiis par la jjliotograpbie astrono- mique. Slocum. Observations of the sun on May 18 and 19, 1910. Ap.J.. 32, (2i). SPECTROSCOPY OF SUN AND ECLIPSES. 4500 SOLAIJ SPECTRUM (INTEGRATED SUNLIGHT). GENERAL. Abbot. The sun's energy-spectrum and temperature. Ap.J., 34, (197) ; 184:98 : The sun. Bevan. The influence of anomalous dispersion on solar phenomena. M.N., 72, (84j. Bosler. 18760. Les recents progres du nietliodes astro-physiques aux Etats- Unis ; 18701 : Recent progress in astro- physics in the United States. [Transl.] Gutlmick. 19303. Neuere Methoden der Sonnenforschung. Julius. 19518. Selektive Absorption und anomale Zerstreuung (Diffusion) des Lichtes in ausgedelinten Gasmassen. [Mit einer Anwendung auf die Theorie des Sonnenspektrums.] [Cliers.] Ladenburg. 19G03. Die Spektral- analyse und ihre kosmischen Konse- quenzen. Rede. 4520 Visible Spectrum. Perot. Sur la spectroscopie solaire. C.l!., 152, '.30;. et Lindstedt. Sur la lon- gueur d'onde de la raie solaire hj. C.R., 152, ('1367). 4530 Infra-red Spectrum. Abbot. 18191. liecent bolograpLic results from the Astrophysical observa- tory at WMftliington. [Abstract.] 4540 Identification of lines with elements. Arcbenhold. 18571. Neuere Unter- suchungen iiber den chemischen Ur- sprung verschiedener Linien im Sonnen- spektrum und in Sternspektren. [Keferat.] 158 ^360 Hale. 19315. Carbon in the chronio- sphere. [Abstract.] Nicbolson. The constitution of the solar corona. I. Protofluorine. M.N., 72, (139). Ross. On the detection of the ele- ment dysprosium in the solar chronio- S2)here. M.N., 71, (671). Runge. 20120. Oxygen in the sun. [Abstract.] 4550 Changes in lines width, intensity, position;. Julius. 19517. The lines H and K in the spectrum of the various parts of the solar disk. Rossi. The widening of the hydrogen lines by high pressures. Ap.J., 34, (299). St. Jolin. The general circulation of the mean and high-level calcium vapor in the solar atmosphere. Ap.J., 32, (36). Zeeman & Wiaawer, The magnetic separation of absorption lines in con- nection with sun-spot spectra. A^j.J., 32, (329). 4600 SPECTROSCOPIC RESEARCHES OF SURFACE WITH ECLIPSE. SPECTROHELIOGRAMS. Fox. 19182'. Solar spectroscopic observations. [Abstract.] Hale. Notes on solar magnetic fields and related phenomena. A.S.P., 22, (63; ; Classification of the hydrogen (Ha) flocculi. t.c. (142). Julius. 19517. The lines H and K in the spectrum of the various parts of the solar disk. Royds. On the absorption markings in Ho spectroheliograms. M.N., 71, (723, with pis.). Slocum. Observations of the sun on May 18 and 19, 1910. Ap.J., 32, (24). 4610 Spots. Hale. Asymmetrical lines in sun- spot spectra. " A.S.P., 22, (145). Lockyer. 19674. On the iron flame spectrum, and those of sun-spots and lower-type stars. St. John. Motion and condition of calcium vapor over sun-spots and other special regions. Ap.J., 34, (57). General Planets. 159 4780 4620 Faculae. St. John. 20130. Motion and con- dition of calcium vapor over sun-spots and other special regions. Ap.J., 34, (57, 1.31, with tabs., pi., text fig.). 4630 Chromosphere without eclipse. London Royal AstronoiMical Society, Council of. Solar activity in lUll. M.N., 72, (301:-305). Abetti & Smith. Photographic ob- servations of prominences. Ap.J., 33, (141). Fox. 19178. Une grande protube- rance eruptive. Gale & Adams. 19212. The spectrum of the spark under pressure and an ■application of the results to the spectrum of the chromosphere. [Abstract.] Newbegin, A. II. 19830. Solar prominence, March 25, 1911. Newbegin, G. J. 19831. Solar prominences in 1910 [and 1911]. Ross. On the detection of the ele- ment dvsprosium in the solar chromo- sphere.' M.X., 71, (671). Slocum. Two solar prominences. Ap.J., 32, 1,125) ; The solar prominence of October 10, 1910. op. cit. 34, (294). 4640 Determination of Rotation. Adams & Lasby. 18515. An investig- ation of the rotation period of the sun by spectroscopic methods. Cotton. On Doppler's principle in connection with the study of the radial velocities on the sun. Ap.J., 33, (375). Evershed. On the angular speed of rotation of a long-enduring prominence. Ap.J., 33, (1). Fox. 19179. Period of solar rota- tion. L-Vbstract.] Perot. 19923. Signification des mesui-es de vitesse de rotation par la methode spectroscopique : rotation du soleil. Storey & WUson. Spectroscopic ob- servations of the sun's rotation made at the Royal Observatory, Edinburgh, 1903-191 0. M.N., 71, (674, with pi.). 4650 SPECTROSCOPIC UESEAR(;iIES OF SLFN IN ECLIPSE. Campbell. 18833. Observations of the total solar eclipse of January 3, 1908. [Abstract.] 4700 Chromosphere. Reversing layer. Mitchell. 19795. The flash spectrum, Sumatra eclipse. May 18, 1901. [Ab- stract.] 19796: Spectrograms taken at Daroca, Spain, August 30, 1905, U.S. naval observatory eclipse e.x:pedition. [Abstract.] 19797 : Preliminary wave- lengths frou^ flash spectra taken in Spain, 1905. [Abstract.] 4750 PHYSICAL CONSTITUTION DEDUCED FROM SPECTRO- SCOPIC OBSERVATIONS. Archenhold. 18571. Neuere Unter- suchungen iiber den chemischen Ur- sprung verschiedener Linien im Sonnen- spektrum und in Sternspektren. [Referat.] Birkeland. Sur la constitution elec- trique du soleil. C.R., 153, (513). Bjerrum. 18734. Die spezifische Warme der Gaze. Brester Jz. 18780. Du soleil et de ses rayons beta et ganmia, qui causent les aurores polaires, les protuberances et la couronne solaires et les queues des cometes. Julius. 19517. The lines H and K in the spectrum of the various jiarts of the solar disk. Ladenburg. 19604. Astrophysikali- sche Beme.-kungen ira Anschluss an Versuche iiber Absorption und anomale Dispersion in leuchtendem Wasserstoff. St. John. The general circulation of the mean and high-level calcium vapor in the solar atmosphere. Ap. J., 32, (36) Slocum. Circulation in the solar atmosphere as indicated by iirominences. Ap.J., 33, (108j. 4780 PLANETS. GENERAL. Barnard. 18646. On some experi- ments in photographing enlarged images of the planets direct with the forty-inch telescope. [Abstract.] General Planets. 160 4780 Bamnann. 18G59. Das Scliicksal der riaiieten von Svante Arrljenius. [Mars.] Kiitik. Browo. 18795. The relations be- tween Jupiter and the asteroids. Innes. 19471. Determination of the places of the planets. Jeans. 19504. The upper atmosphere. M00^\ 4800 GENERAL. Giintber. 19293. Yergleirhende Mcjnd- uiiil Erdkunde. Maunder. 19743. On the smallest visible phase of the moon. Meyer. 19769. Der Moiid. Cnsere Nachbarwelt. Pickering. 19975. L'origine de la lune et le probleme des volcans. Saunder. 20140. The determination of selenographic positions and the measurement of lunar photographs. ScMndler. 20159. Zur Genesis des Mondes. See. Tlie origin of the so-called craters on the moon by the impact of satellites, and the relation of these satellite indentations to the obliquities of the planets. A.S.P., 22, (13). Whitmell. 20399. The lunar epi- cyclic. 4810 OBSERVATIONS FOR POSITION. Greenwich Royal Observatouy. Right ascensions and north polar distances of the centre of the moon, 1909. Gr.O., 1909, -;i43}, {79\. Parrot. Observations meridiennes de la Lune. B.A., 28, (173). Boss. New computation of the ine- quality in the moon's longitude with Jupiter's longitude as argument. A.N., 189, (15). 4820 CONSTANTS, DIMENSIONS (DIAMETER AND FIGURE). SIASS, DENSITY, DISTANCE. Greenwich Royal OiiSEKVATORY. Hori- zontal and vertical diameteis of the moon observed in the year 1909. Gr.O., 1909, {134}, {76}. Greenwich Royal Observatory ^V Cape of Good Hope Royal Observatory. De- terniinatiou of the moon's j)arallax from meridian observations of the crater Mosting A at ... in the years 1906- 1910. "M.N., 71,(526). Wodetzky. 20422. Variatiou der Moud-Bewegung. (Ungar.) 4830 ROTATION (LIBRATION), CONFIGURATION OF SUR- FACE, CHANGES IN DITTO. La forme du globe lunaire. Globe illustre, Bruxelles, 1906, (337j. Les fonnations superficielles de I'ecorce lunaire. Ciel et Terre, Bru- xelles, 1910, (534-544). Dahmer. 18965. Die Gebilde der Mondoberflache. Dubiago. Beobachtungen auf den Sternwarten der kaiserl. Uiiiversitat Kasan. [1. Planeten u. Konieten. 2. Sternbedeckungen uud Saturnbederkung durch deu Mond. 3. Beobachtungen bei der Mondfinstemis 16. Nov. 1910.] A.N., 189, (113). Fauth. 19145. Das Problem der geeignetsten Mond-Topographie. Giinther. 19293. Vergleichende Mond- uiid Erdkunde. Kom. 19575. Eine auffallende Erscheinung am Krater Taquet im Mare Serenitatis. 19576 : Wie gross ist der Oceanus Procellarum ? 19577 : Weitere Beobachtungen am Krater Taquet. Lemaire. 19560. Constitution physique de la lune. Hauteurs des montagneB. Loewy. 19678. Les montagnes de la lune. et Puiseux. 19679. La question de l'origine des mera luuaires. Moreux. 19807. Changemeuts ap- parents sur la lune. Puiseux. 20040. Sur I'liistoire du relief lunaire. See. The origin of the so-called craters on the moon by the impact of satellites, and the relations of these satellite indentations to the obliquities of the planets. P.A,, 18, (137). Tomkins. 20334. Les radiations blanches des crateres lunaires. Toucbet. 20335. La comparaison des observations lunaires. Moon. 161 4870 4840 ATMOSPIIERK. Comstock. 18912. Research work at the W'asliljiirn observatory. Stellar parallax, the lunar atmosphere, the ocular iielioineter. [Abstract.] 4850 'rE.\rrKRATURE RADIA- TION, BRIGHTNESS, PHASES, r.UMIERE CENDR^E. La temperature de la lune. Globe illustre, Bruxelles, 1906, (295). Miethe u. Seegort. Cher qualitative Verschiedenheiten des von den einzeluen Teilea der Moudoberflache reflektierten Lichtes. A.N., 188, (9). Scheller. 20155. Helligkeit der Wondphasen. Terkan. 20318. Die Helligkeit des Vollmoades zur Zeit der totalen Moud- fiusternis vom 16. November 1910. (Ungarisch.) 4860 ECLIPSES. Beobachtuiigen der totalen Mondfin- sternis 1910 November 16. A.N., 187. (57-64). Amann et Rozet, 01. l^lclipse totale de lune du 16 novembre 1910 observ^e a Aoste (Italic). G.R., 151, (1104). Dubiago. Beobachtungen auf den Sternvvarten der kaiserl. Universitat Kasan. [1. Planeteu u. Kometen. 2. Sternbedeckungen uud Saturnbedeckung durch den Mond. 3. Beobachtungen bei der Mondfinsternis 16. Nov. 1910.] A.N., 189, (113). Garrido. 19218. L'eclipae totale de lune du 3 juin 1908. Holetschek. Moadfinaternis 1911 Nov. 6. A.N., 190, (167). Hough. 19126. Actinism of moon- light in a total eclipse. [Abstract.] Kavan. Totale Mondfinsternis 1910 Nov. 16. A.N., 190, (85). Metcalf. The inequality of the illumination of the moon during eclipse. P.A., 18, (87). Mier y Teran. 19775. L'eclipse totale de lune du 9 fevrier 1906. Oom. Observations de l'eclipse de lune 1910 nov. 16 a I'Observatoire de Lisbonne (Tapada). A.N., 187, (363). (E-2987) Rambaud. Observations de l'eclipse totale de Lune du 16 novembre 1910 [et d'occultatioiis d'etoiles]. B.A., 28, (11). Ristenpart u. Zurhellen. Beobach- tuugder totalen Mondfinsternis 1910 Mai 23 auf der Sternvvarte Santiago de Chile. A.N., 187, (357). Sy. Observations du passage de la ligne d'oujbre sur les bords et les cra- teres de la Lune [eclipse du 16 novembre lillU]. B.A., 28, (42). Terkan. 20318. Die Helligkeit des Vollmoades zur Zeit der totalen Mondfiasternis vom 16. November 1910. (Ungarisch.) 4870 OCCULT ATION (STARS, PLANETS, SEPARATELY). L'occultation de Mars. [L. R.] Gaz. astron., Bruxelles, 1910, (31). Greenwich Royal Observatory. Oc- cultations of stars by the moon, with the equations deduced from the occultations. '1909. Gr.O., 1909, (74). Antoniazzi. Occultazioni di stelle. [BD— 22° 4219; BD— 22° 4223; BD— 22° 4227 ; BD— 22° 4224.] A.N., 189, (367). Bilt. Sternbedeckungen durch den Moad. A.N.,187, (189). Doolittle. The occultation of t Tauri, (Hough 642). P.A., 18, (293). Dubiago. Beobachtungen auf den Sternwarten der kaiserl. Universitiit Kasan. [1. Planetea u. Kometen. 2. Sternbedeckungen und Saturnbedeckung durch den Mond. 3. Beobachtungen bei der Mondfinsternis 16. Nov. 1910.] A.N., 189, (113). Greenwicli Royal Observatory. Ob- servations of occultations of stars by the moon made in the year 1911. M.N., 72, (185). Hall et alii. Occultations of stars by the moon, made with the 26-inch and the 12-inch equatorials at the U.S. Naval observatory. A.J., 26, (184). Heath. Discussion of occultations observed during the lunar eclipse of 1898 December 27. M.N., 71, (550;. Hirayama. 19395. Photographic observations of the occultations during the lunar eclipse, 1909, Nov. 27. (Japa- nese.) Moon. ]C2 4870 Innes. 19406. Occultation of stars ])y moon. Javelle, LagnUaet Simonin. Occulta- tiuiis d'etoiles observees, pendant I'eclipse de Luiie du 16 novenibre 1910, a rObservatoire de Nice. B.A., 28, (45- 46). King. Photograpliic observations of occultations. Harv.C, 59, (187). Nijland u. Bilt, van der. Beobach- tuug der totalen Mondfinsternis 1910 Nov. 16. A.N., 188. (V6l). Pickering. 19967. Recent researches of the Heury Draper memorial. [Ab- stract.] Rambaud. Observations de I'eclipse totale de Lune du 16 novembre 1910 [et d'occultations d'etoiles]. B.A., 28, (41). Upton. Occultations of stars by the moon 1910 Nov. 16, observed at the Ladd observatoiy. Providence, R.I., dur- ing the total lunar eclipse. A. J., 27, (16;. Westland. 20394. Observation of an occultation of Jupiter (1911 June 8). Wood. 20453. Occultation of Saturn 13th March 1910. & Worsell. 20459. Oc- cultation of Saturn. 4880 INFLUENCE ON TER- RESTRIAL PHENOMENA. Hecker. 19363. Beobachtungen an Horizontalpendeln iiber die Deformation des Erdkorpers unter dern Einfluss von Sonne und Mond. 19364: Deformation des Erdkorpers unter dem Einfluss des ilondes nach den Potsdamer Beobachtun- gen. 4890 PHOTOGRAPHS, MAPS, DRAWINGS (PUBLISHED RE- PRODUCTIONS). Une nouvelle carte lunaire de van Langren. [E. L,] Bruxelles, Bui. .Soc. astron., 1910, (76-80) ; Ciel et Terre, Bruxelles, 1910, (563-568). Barnard. 18629. Astronomical photography with small lenses. [Ab- stract.] Bosnians. 18763. La carte lunaire de van Langren conservee a I'Universite de Leyde. Miethe u. Seegert. Qualitative Verschiedenheiten des von den einzelnen Teileu der Mondoberflache reflektierten Lichtes. III. [Nebst Notiz.] A.N., 188,(371j. Prinz. 20038. Un nouvelexemplaire de la carte de la lune de van Langren. Puiseux. 20041. Atlas photogra- phique delalune. Schiller; Schickhard ; Campanus (3 septembre 1904;. 20042 : Atlas photogra plaque de la lune. Blanche LVI : Mercator, Gassendi, Monts Riphee. 20043 : Atlas photographique de la lune. Plauche LVlll: Plalon. J. Herschel Mairan (28 fevrier 19()4j. 20044 : Atlas photogi-aphique de la lune : Golfe dea Iris ; Pvtiiagore ; Anaximene (3 sei^tem- bre 1904). et Loewy. 20046. Atlas photographique de la lune. 20047 : Atlas photographique de la lune. Planche XLVI : Albategnius ; Triesnecker ; Manilius. 20048: Atlas photographique de la lune : Agrippa ; Mer des Vapeurs ; Apeunins. 20049 : Atlas photographique de la lune : Mercator ; Aler des Nuages : Land8l)erg (planche XLIX). 20050: Atlas photographique de la lune. Planche LI : Cleoniede ; Posidonius ; Hercule. 20051 : Atlas photographique de la lune : Eudoxe ; Mer du Froid ; ileton. Stephani. 20270. Stereoskopische Aufiiahmen des Mondes und Hohenmea- Bungen der Mondberge vermittelst des Stereokomparators. Wodetzky. 20426. Photochemische Studie der Oberflache des Mondes. (Ungarisch.) Wood. The moon in ultra-violet light, and spectroselenography. P. A., 18, (67). 20406 : The moon in ultra-violet light. EARTH. 5000 GENERAL. Ete 1811-ete 1911. Existe-t-il une periode seculaire. [H. M.] Rev. nephol. Bru.xelles, 1911, (546-547). Arrhenius. 18587. Das Schicksal der Plaueten. Cordeiro. The tilting of the earth's axis and the glacial epochs. P.A., 18, (201 j. Davidson. 18976. The rigidity of the earth. Earth. 163 5050 Darwin. 1S973. Ebbe und Flut u. verwaiulte Erscheimingen iui Soiinen- systcni. Guntlier. ]92!)2. Eutwicklungsge- schichte der Lelire von der Erdoestalt. 19293 : Vergleichende Moiid- und Erd- kunde. Hagen. 19308. Neiier mechanischer Beweis fur die (Jmdrehuiig der Erde. Hayford. 19357. The figure of tlie eartli und isostasy from measurements in the United States. 19360 : Supplemen- tary investigation in 1909 of the figure of the earth and isostasy. Keyes. 19533. Aljundance of meteorites on the Painted Desert, and its bearing upon the planetesimal hypothesis of the origin of the earth. Klein. 19543. Mathematische Geo- grapiiie. Le Paige. 19654. L'etude de la teire. Linke. 19667. Die Pendulations- tlieorie. Love. 19683. The figure and con- stitution of the earth. Opacki. 19884. Achsenschwanliung und Weltenwerden. Pockels. 20006. Aendemngen der Rotationsgeschwindigl^eit der Erde als geologischer Faktor. Prescott. 20035. On the rigidity of the earth. Sagnac. Les systemes optiquea en mouvenient et la translation de la Terre. C.R., 152, (310). Silber. 20226. Die Erie eine Holilkugel. Trabert. 20339. Lehrbuch der kosmischen Physik. Wiedemann. 20403. Dimensioneu der Erde nach muslimischen Gelehrten. Wolfif. 20450. Die Entwickehing der Gradmessnng. 5050 GEODESY. Akesson. 18533. An astronomical method for determination of icedrif't in the neighbourhood of the Pole. (E-2987) Bigourdan. Sur la mesure de la meridienne de France a la fin du XVIil* siecle pour la deterniination du metro (suite). B.A., 28, (21, 49, 109). Bourgeois. 18767. Rapport sur les niesures des bases. Suivi d'un rapport sur la mesure de la l)ase de Haiphong. Dolezal. 19040. Markscheiderische und geodiitische Instrumente vom kcinigl. ungar. Oberbergrate Prof. 0. Cseti. Frischauf. 19194. Zwei Aufgal)en der lioheren Geodiisie. ['Al)bildung des Spharoids auf einer Kugel.] Gautier. 19220. L'association geo- desique Internationale et les resultats a la conference de Londres et Cambridge. Harkanyi. 19336. Alinimum der Meridianlange des Rotationsellipsoids bei konstantem Volunien. (Ungar.) Heil. 19367. Grosslierzogllch Heasi- sches Hauptnivellement im System der Koniglich Prenssischen Landesauf- nahnie. Helmert. 19369. Die Genauigkeit der Dimensionen des Hayfordschen Erdellipsoides. u. Galle. 19370. Bericht iiber die Triangulatiou (1903-1909). Lallemand. 19619. Rapjwrt general sur les nivellements de precision (periode de 1906 a 19U9). Mikami. 19779. Some additions to my paper : "On the Dutch art of sur- veying as studied in Japan." Petersen. 19936. Levelling of pre- cision : The islands of Funen, Sealand and Falster. (Danish.) Rosen. 20107. Meridiangradmessung an der Westkiiste Schvvedens. (Schwe- disch.) Sande Bakhuyzen, H[enricu8j G[orardus] van de et Heuvelink. 20139. RapjDort de la Commission geodesique [Neerlandaise] sur les travaux e.\eeutes en 1910. (Hollandais.) Soldner. 20249. Theorie der Landes- vermessung (1810). Stromeyer. 20291. Solar eclipse April 1912. StUcker. 20307. Weltkarte der Azimute und der Entfermingen fiir Graz. Ubaghs. 20356. La densite de la terre. M 2 Longitude, Latitude. 164 5100 LONGITUDE, LATITUDE, VARIATION OF LATITUDE. PENDULUM OBSERVATIONS. DISTURBANCE OF GRAVITY. Longitude. Latitude. Albrecht. rrovisorisclie Resultate des iiiternatioiialen Breiteudieiistes auf dem Nordparallel in der Zeit von I9I0.0 bis I'JII.O. A.N., 188, (265). 18542: Bericlit iiber die Langen-, Breiten- imd Azimutbestimmungen, erstattet voni Zentral bureau. u.Wanach. 18543. Resul- tate des Internationalen Breitendienstes. Ambronn. 18544. Astrouomische Arbeiten wiihrend der Eeise [Nach Apia). 18545 : Resultate der astrono- mischen Beobaclitungen des liand- messers Lamniert fiii- Apia im Jalne 1902. Bourgeois. Determination des coor- donnees geograpliiques aux colonies en employant la telegraphie sans fil. Essai de la methode entre Paris (Observatoire) et Bruxelles (Palais de Laeken). C.R., 153, (497). Claude, Ferrie et Driencourt. Com- jDaraisons radii 'telegrapbiques de chrono- metres j^ar la uiethode des coincidences entre Paris et Bizerte. C.R., 152, (1152). Dehalu. 18983. La methode photo- topograpbique. Grossmami. 19289. iJie Polhohe der Leipziger Sternwarte. Hashimoto & Tashiro. 19348. De- termination of the longitudes and lati- tudes of Horisha, Shuri, and Taihoku. KaMe. 19520. Hilfsmittel und Methoden zur Bestimmung der geogra- phisclien Lage des Ballonortes bei Fahrten iiber und in den Wolken und bei Nacht. Kohlschiitter. 19569. Bau der Erdkruste in Deutsch-Ostafrika. Liebmann. Die mittlere Polhohe der Strasslnuger Stern warte. A.N., 187, (145i. Marcuse. 19737. Zur Frage der astronomischen Ortsbestimmuug im Ballon. Pritchett. 20039. Personal equation in longitude determination. [Abstract.] Polychronakis. 20016. Comment on trace pratiquement une meridienne. 5100 Renan. Resultats de la discussion des observations faites par MM. Lancelin et Tsatsopoulos pour determiner par la telegraphie sans fil la difference de longitude entre Paris et Bizerte. C.R., 153,(1211). Roa^n. 20108. Determination de la latitude au Spitzberg. Sand. 20135. 17 determinations of latitude made in the years 1893-1905 after the method of Horrebow. (Danish.) 20136: 18 determinations of latitude made in the years 1879-99 after the method of v. Sterneck. (Danish.) Schlesinger & Blair. 20168. Anomalous refractiou. [Abstract.] Schnauder. 20171. Polhohenbestim- mungen in den Jahren 1902, 1903, 1908 und 1909. Scbwarzscliild u. DziewxUski. 20186. Bestimmung der Polhohe von Gottingen und der Dekliuationen von 375 Zenith- sternen mit der hiingenden Zenith- k am era. Zeipel. 20491. Determination du temps au Spitzberg. 20492 : Mesure des angles azimutaux au Spitzberg. Variation of Latitude. Variation of Gravity- Borsch. Bericht iiber Lotabweichun- geu ( 1 909). Comstock. 18913. Some investiga- tions relating to zenith telescope lati- tudes. [Aljstract.] Davis. 18980. The latitude-variation observatory of tlie International geodetic association, [.\bstract.j Doolittle. 19043. The latitude work of the Flower observatory. [Abstract.] 19048 : Latitude terms of long period, from the Flower observations. [Ab- stract.] Hammer. 19328. Die Veriinderlich- keit der geographischen Breiten 1910. Jacoby. 19485. Recent astronomical work at Columbia university. [Abstract.] Lagrange. 19606. Les variations de la gravite dans le temps. Lallemand. 19620. Note sur les marees de I'ecorce et I'elasticite du globe terrestre. I Atmosphere. 165 5400 Rees. 20068. The work of the Cohimbia iiniversitj' observatory. [Ab- stract.] Zwiers. 20502. Preliminary investiga- tion into the motion of the pole of tiie earth in 1907. Pendulum Observations Disturbance of Gravity. Braak. 18769. On tidal forces as determined by means of Wiechert's astatic seismograjjh. Eotvbs. 19115. Die Niveauflachen mid die Gradienten der Schwerkraft am Balatonsee. Beobachtungen auf der Eisdecke in den Jahren 1901 und 1903. Francois. 1918-1. Sur les forces qui agisseiit sur le pendule. Hecker. 19302. Bemerkungen zu dem Anfsatze L. A. Bauers : " On gravity determinations at sea" in Amer. J. Sci. 31, January 1911. 19363 : Beobachtungen an Horizontalpendeln iiber die Deforma- tion des Erdkorpers unter dem Einfluss von Sonne und Moud. 19304 : Deforma- tion des Erdkorpers unter dem Einfluss des Mondes nach den Potsdamer Beobach- tungen. 19365 : Bericht iiber die Eotvossche Drehwage des Kgl. Geo- datischen Institutes in Potsdam. Niethammer. 19848. Methoden und neuere Ergebnisse der Sch\veremessun- gen. Oltay. 19882. Messung der Schwer- kraftbeschleunigung in Budapest. (Un- garisch.) 5300 COSMIC INFLUENCE ON TERRESTRIAL PHENOMENA. Les cometes et les inoudations. Globe illustre, Bruxelles, 1910, (138). Paris. 19139. Magnetic observations at Cheltenham, Maryland, May 15 to 20, 1910. Nippoldt. 19861. Maguetische Beob- achtungen in Seddin wahrend des Kometendurchgangs 19. Mai 1910. Stenqvist & Petri. 20267. Observa- tions of earth-currents in Stockholm on May 19, 1910, during passage of Halley's comet. Thomson. 20323. On a variation in the intensity of the penetrating radiation at the earth's surface observed during the passage of Halley's comet. [Abstract.] 5400 ATMOSPHERE. Electricite atmospherique. Union textile Gantl, 1907, (127-129). [Hambuug. DErTsciiE Seewarte.] Grosse Sichtweite eines Leuchtfeuers. Ann. Hydrogr., Berlin, 39, 1911, (280). Abbot. The brightness of the sk}' at night as observed on Mount Whitney. A..J., 27, (20). The sun's energy- spectrum and temperature. Ap.J., 34, (197). & Powle. 18500. Note on the reflecting power of clouds. Bailey. 18600. The duration of twilight within the tropics. [Abstract.] Beattie. 18664. The atmosphere in observation work. [Abstract.] Bell. 18670. Aurora Borealis ob- sei-ved at Beinn Bhreagh, near Baddeck, Nova Scotia, September 21 and October 18, 1909. Bigelow. 18708. Studies on the general circulation of the atmosphere. The distribution of tlie temperature, l^ressure, density, and velocity of motion of the atmosjjhere in the northern hemi- sphere of the earth. Radiation from the sun and temperatures in the earth's atmosphere. Bums. 18814. The brightness of the sky. Corrigan. An astronomical theory of the molecule and an electronic theory of matter. Solar and terrestrial physics viewed in the light thereof. Part 4. (Continued.) The terrf^strial atmosphere. P.A., 18, (32). Eggert. 19095. Einfluss der Refrak- tion auf die Fadendistanzmessung. Everdingen, van. 19129. Drachen- beobachtuugen an Bord I. M. Panzer- schiff ,,de Ruyter" angestellt vom Marineleutnant A. E. Rambaldo wahrend der Fahrt nach Ost-Indien und wahrend des Aufenthalts in W. -Indian Dec. 190S-JuIi 1909. Galissot. Sur I'absorption selective de latmosphere. C.R., 152, (569). Gregg. 19284. Recent auroral dis- plays and magnetic disturbances. Hough. 19425. The effect of atmo- spheric disturbance on telescopic defini- tion. [Abstract.] Kayser. 19529. Zusammensetzung der oberen Regiouen der Atmosphiire. Atmospliere. Lenard. 19651. Die Absorption der Xordliclitstrahlen in der Krdatmospbiire. Paulsen. 19912. Sur la direction des courants electriques dans I'aurore polaire. 19913 : Tlieorie nouvelle de I'aurore polaire. Sande Bakhuyzen, van de. 20137. r.estiiiiniuiig der liefraktion auf Grund- lage derails den Beobachtungen wjibrend Luftschiffalirten abgeleiteten Tempera- turgradienten. Schacht. 20142. Scintillation der Venus. ScMesiBger & Blair. 20108. Anomalous refraction. [Abstract.] Stenqviat. 202GG. Das Nordlicht den 25. Sept. 1909. (Schwedisch.) Stormer. Resultats des mesures photo^iramuietriques de I'altitude de I'aurore boreale a Bossekop aux mois de fevrier et mars 1910. O.K., 152, (1194). 20275 : Photographs of the aurora Ijorealis and a new method of measuring its altitude. Stroobant. 20293. L'aurore boreale du 9 septembre 1898 et les ijheriomenes qui Tout acconipagnee. Wegener. 2038G. Xatur der obersten Atmospharenschichten. MERCURY. 5610 OBSERVATIONS OF POSITION OF MERCURY. Greenwich Rot.'vl Ohservatory. Right ascensions and north polar distances of the centre of Mercury, 1909. Gr.O., 1909, {147[, {83',. 5620 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY OF MERCURY. Greenwich Royal Observatory. Ver- tical diameters of Mercurj-, 1909. (ir.O., 1909, {137} , {74\ . 5670 TRANSITS, OCCULTATION OF MERCURY. Le passage de Mercure. Globe illustre, Bruxelles, 1907, (7f;0-762j. Passage de Mercure sur le disque solaire le 13-14 novenibre 1907. Bruxelles, Ann. Obs. R. Belg., (N. Ser.), Ann. astr., 11, 1908, (391-421); Gaz. astron., Bruxelles, 1908, (2-4). IGG 5400 Biesbroeck, van. 18700. Le prochain passage de Mercure sur le soleil. Bigourdan. 18710. Les passages de Mercure devant le soleil. Jamaln. 1 9490. Sur les phenomeues qui acconipagnent les passages de Mercure. Vandevyver. 203G0. Le passage de Mercure devant de soleil. VENUS. 5700 GENERAL. Le calendrier des habitants de Venus. Globe illustre, Bruxelles, 1908, (439j. 5710 OBSERVATIONS OF POSL TION OF VENUS. Greenwich Royal Observatory. Right ascensions and north polar distances of the centre of Venus, 1909. Gr.O., 1909, {I48i , {83} . 5720 CONSTANTS, DIMENSIONS, DI AM ETE R AN D FIGURE, MASS AND DENSITY OF VENUS. Greenwich Roval Observatory. Hori- zontal and vertical diameters of Venus, 1909. Gr.O., 1909, llo7} , {74}. Ventosa. Nouvelle m^thode pour determiner le diametre et I'aplatissement de la planete Venus. A.N., 189, (333). 5740 ROTATION, CONFIGURA- TION OF SURFACE OF VENUS. Belot. Sur la duree de rotation de Venus. C.R., 153, (230). Bigourdan. [Sur la duree de rotation de Venus d'apres M. A. Belopolsky.] C.R., 152, (15). Bolton. 18748. The planet Venus. Evidence of axial rotation. Harrison. 10339. The problem of the rotation of Venus and the inference to be drawn from the probable atmo- spheric condition of the planet. Niesten et Stuy^aert. 19847. Obser- vations sur I'aspect phvsique de Venus de 1881 a 1895. McEwen. 19721. Remarks on Mr. Bolton's paper on the rotation of Venus. Mars. in? 5840 McHarg. 19722. Observations recentea lie Venus ; la lotatiou de la planete. See. The rotation of Venus and life on planets other than the earth. P. A., 18, (I). 5770 TRANSITS, OCCITLTATION OF VENUS. Andrews. The black drop. P. A. ,18, (18). 5780 PHOTOGRAPHS, MAPS AND DRAWINGS OF VENUS. Qu^nisset. Photographies de la plaiic'te Venus obtenues a I'Observatoire de Juvisy. C.R., 153, (1208). MARS. 5800 GENERAL. Baumann. 18659. Das Schicksal der Planeten von Svante Arrheniiis. [Mars.] Kritik. Delporte. 18985. La planete Mars. Krebs. 19583. Vulkanische Ldsung der Marsriitsel. Labadie-Lagrave. 19G02. Dernieres iiouvelles de la planete Mars. Moreux. 19808. Mars est-il liabite ? Olsson. 19881. Ober den Planeten Mars. Warum er als eine bewohute Welt betrachtet werden kann. Alte und neue Griiude. (Schwedisch). 5810 OBSERVATIONS OF POSI- TION OF MARS. Greenwich Royal Observatory. Right ascensions and north polar distances of the centre of Mars, 1909. Gi.O., 1909, {149}, {84}. Graff. 19273. Beitrage zur physi- echen Qntersuchung der grossen Pla- neten. 1. Beobachtungen und ZeicLnun- gen des Planeten Mars wiihrend der Oppositionen 1901 und 1909 ausgefiihrt am 12-z6lligen Refraktor der Urania- Sternvrarte in Berlin und am 9|^-zolligen Aquatoreal der Hamburger Sternwarte in Bergedorf. Maitre et Lubrano. Observations (meridiennes) de la planete Mars. B.A., 28, (272). 5820 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY OF MARS. Greenwich Royai, Observatohy. Jleasures of tlie diameter of Mars made with the 2S-inch refractor fin the years 1896, 1897 and 1909). Gr.O., 1909, (IIG). Horizontal and vertical diameters of Mars. 1909. t.e. {138} , {75} . Struve. 20306. Die Lage der Mars- achse und die Konstanteu im Mars- system. 5840 ROTATION, CONFIGURA- TION OF SURFACE OF MARS. Aitken. A review of the recent ob- servations of -Mars. [Abstract.] A.S.P., 22, (78j. Antoniadi. Mars. A.N.. 187, (125) ; 189,(361). 18558: L'aspect physique de la planete Mars. Jarry-Desloges, Lowell. Mars. A. N., 190, (15, 31). Baumann. Zur bevorstehendeii Oppo- sition des Mars. A.N., 188, (391). Belpaire. 18677. Les canaux de Mars. Comas-Sola. Mars. A.N., 189, (327). Observaciones de Marte. op. cit. 190, (5). Cerulll. Mars-Kanale. [Auszug.] A.N., 189. (435). Dierckx. 19028. Les canaux de Mars exiatent-ils ? Dupont. 19060. Observations de Mars en 1909. 19067 : Observations plane- taires. Fauth. 19144. Zur Kritik der „Kanale" auf Mars. Frere. 19193. Observations de Mars pendant I'opposition de 1909. Graff. 19273. Beitrage zur physi- schen Untersiichung der grossen Pla- neten. 1. Beobachtungen und ZeicliDun- gen des Planeten JMars wahrend der Oppositionen 1901 und 1909 ausgefiihrt am 12-zolligen Refraktor der Urania- Sternwarte in Berlin und am 9J-zolligen Aquatoreal der Hamburger Sternw^arte in Bergedorf. Janasen u. Andersen. Marsbeobach- tungen 1911. A.N., 191, (5). Jarry-Desloges. Premieres remarques sur les observations de Mars en 1911 A.N., 189, (175, 319). Mars. 168 5840 Jarry-Desloges. Mars. A.N., 189, (337j; 190, (87 j. Resum^desobservationB physiques de la planete Mars faites dans I'opposition 19U9-I910, avec des re- marques sur la quallte des images tele- scopiques en diverses regions. C.R., 152, ai42j; 19197: Lea regions blanches de la planete Mars ; observa- tions des surfaces planetaires. u. Lowell. Mars. A.N., 190, 127, 166, 223j. Jonckheere. 19514. What is the usual acceptance of the word canal in connection with Marb ? LoweU. Mars. A.N., 189, (143, 179j. 19G89 : A Martian cloud. [Abstract.] 19fi92 : The canals of Mars. An investig- ation of their objectivity. [Abstract.] Maunder. 1974-5. A further note on the caijuls of Mars. Niesten. 19846. Observations sur I'aspect physique de la planete Mars pendant les oppositions de 1884 a 1894. Quigon. 20055. Pouvons-nous afnnner qu'il-y-a des canaux sur Mars ? Stuyvaert. 20310. Observations sur I'aspect physique des planetes Mars et Jupiter. 5870 TRANSITS, OCCULTATION. L'occultation de Mars. [L. R] Gaz. astron., Bruxelles, 1910, (31j. 5880 PHOTOGRAPHS. MAPS, AND DRAWINGS OF MARS. Antoniadi. On some drawings from photographs of Mars taken in 1909 by Professor P.arnard and Professor Hale. M.N. ,71, ('714, with pi.). Barnard. Photographs of the planet Mars. M.N., 71, (471, with 2 pis.). Graff. 19273. Beitriige zur physi- schen Untereuchung der grossen Pla- neten. 1. Beobachtungen undZeichnun- gen des Planeten Mars wahrend der Oppositionen 1901 und 1909 ausgefiihrt am 12-zolligen Refraktor der Urania- Sternwarte in Berlin und am 9-J-zolligen Aquatoreal der Hamburger Sternwarte in Bergedorf. Innes & Wood. 19482. Drawings of Mars, 1909. Lowell. 19686. Les premieres photo- graphies des canaux de Mars. MINOR PLANETS. 5900 GENERAL. Berliner astronomisches .Jahrbuch fiir 1913 mit Angaben fur die Oppositionen der Planeten (lh(691) fur 1911. Elemente u. Ephemeriden kleiner Planeten. A.N., 189, (6.3-70). I'".phemeriden kleiner Planeten. A.N., 187,(141-144); 188, (295-.300) ; 189, (177-180, 241-244, 381-384j; 190, (391-398;; 191, (11-14, 3J-32, 51- 52). [Ephemeriden und Elemente von Planeten.] A.N., 188, (113-116). Mitteilungen iiber kleine Planeten. [Ephemeride von (89) Julia; (386) Siegena.] A.N., 189, (107-110). Mitteilungen iiber kleine Planeten. [Elemente und Ephemeriden.] A.N., 188, ^229-232). Mitteilungen iiber kleine Planeten. [Ephemeride von (3G3) Padua ; Elemente von 1911 LM.] A.K., 188, (151- 152). Mitteilungen iiber kleine Planeten. [Ephemeriden.] A.N., 188, (261-264). (observations of Eros at the coming opposition. [General discussion.] A. A. A., (130-140). Un nioyen nouveau de decouvrir lea asteroides. [G. V. B.] Bruxelles, Bui. Soc. astron., 1906, (292-296). LoxDos Royal Asteoxomical Society, Council of. Discovery of minor planets in 1911. M.N. , 72, (296-299). Barton. The distribution of the asteroids. P.A., 18, (151). Berberich. Empirische Korrektionen der l^iemente einzelner Planetoiden- bahnen. A.N., 189, (171). Identifizie- rungen einiger kleiner Planeten. t.c. (36 i;. Brendel. Vorschliige ftir die Bearbei- tung der kleinen Planeten. A.N., 190, (145, 425). Cbofardet u. Coniel. Ephemei-ide von Planeten. A.N. , 188, (61). Cohn. Elemente und Numerierung von kleinen Planeten. A.N., 189, (165). Giacobini. Ephemeriden von Plane- ten. A. X., 189, (365). Minor Planets. 169 5900 Haponowicz. Aqnatoreale Kreisbahu- elenieute und Epliemerideu der Plaiieteu 1911 LL, 1911 Lil, 1911 LN. A.N.. 187, (447). Hopfner. 19118. [Klemente und Ephe- meriden der Plaiieten 677 (1909 FR) und 678 (1909 1 Gisela. Kleine Planeten. A.X., 189, (323, 363). (354) Eleonora. Kleine Planeten. A.N., 190, (391) ; 191,(11, 31, 51;. (356; Liguria. Prim. B.A., 28, (281). '357j Ninina. Hepperger. A.N., 188, (81). (359; Georgia. Kleine Planeten. A.X., 188, (31). (360) Carlova. Kleine Planeten. A.X., 189, (109;. Giacobml. B.A., 28, (.308). (362; Havnia. Kleine Planeten. A.N., 189, (191). (363) Padua. Kleine Planeten. A.N., 187, (127). Antoniazzi. A.N., 188, (381;. Esmiol. B.A., 28, (460). Lagrula. A. X., 189, (425). Pechtile. A.X., 190, (441). (365) Corduba Wolf. A.X., 187, (6P,). (367; Amicitia. Kleine Planeten. A.N., 190, (161). (368) Haidea. Kleine Planeten. A.X., 190, (51). (370; Modestia. Kleine Planeten. A.N., 189, (323). (371) Bohemia. Kleine Planeten. A.X., 189, (67;. Stromgren. A.X., 189, (2:5). (372; Palma. Kleine Planeten. A.N., 191, (11, 31, 51;. Oiacobini. B. A., 28, (121). Lagrula. B.A., 28, (267). Prim. B A., 28, (281). (374) Burgundia. Kleine Planeten. A.X.. 189, (109). PechlUe. A.N., 190, (441). (375; Ursula. Kleine Planeten. A.X., 190, (391). (376) Geometria. Ephemeriden von Planeten. A.N., 189, (.381). Coggia. B.A., 28, (393). Dubiago. A.X., 189, (113). Giacobini. B.A., 28, (13). Hepperger. A.X., 188, (81). LagnUa. B.A., 28, (267;. PecbUle. A.X., 187, (161). Prager. A X., 189, (185). (377) Campania. Kleine Planeten. A.X., 190, (161). (378; Holmia. laeine Planeten. A.X., 189, (323). (379) Huenna. Kleine Planeten. A.X., 187, (127, 191). (381) Myrrha. Kleine Planeten. A.N., 187, (127). (385; Ilmatar. Giacobini. B.A., 28, (13;. Lagrula. P.. A., 28, (267). Position of Minor Planets. 185 5910 (386) Siegena. Kleiue Planeten. A.N., 189, (191, 223). Luther. A.N., 191, (37j. PechUle. A.N., 190, (441). (388) Charybdis. Hepperger. A.N., 188, (81). PecMle. A.N., 187, (161). (389) Industria. Hepperger. A.N., 188, (81). Mmosevich. A.N., 188, (49). (390) Alma. Giaoobini. B.A., 28, (123). (393) Lampetia Kleine Planeten. A.N., 188, (113). (395) Delia. Kleine Planeten. A.N., 189, (191). (397) Vienna. Kleine Planeten. A.N., 190, (161). Krumpholz. (397) Vienna. A.N., 190, (87). Luther. A.X., 191, (37). (402) Chloe. Kleiae Planeten. A.N., 187, (127). Giacotaini. B.A., 28, (299). Lagrula. A.N., 189, (425). Luther. A. N., 191, (37). PechUle. A.N., 190, (441). (403) Cyane. Chatelu. B.A., 28, (294). Dubiago. A.N., 189, (113). Hepperger. A.N., 188, (81). Lagrula. B.A., 28, (268). PechUle. A.N., 187, (161). (404) Arsinoe. Kleine Planeten. A.N., 187, (367). (406) Erna. Kleine Planeten. A.N., 190, (51). Hepperger. A.N., 188, (81). (409) Aspasia. Kleine Planeten. A.N., 189, (323). PechUle. A.N., 190, (441;. (410) Chloris. Antoniazzi. Kplienieridenkorrektion. (410;Chluri.s. A.N'., 188, (396). Lagrula. A.N., 189, (125). MUlosevich. A.N., 188, (49). PechUle. A.N., 187, (161). (411) Xanthe. Wolf. A.X., 187, (G;5;. (412) Elisabetha. Giaoobini. B. A., 28, (302 j. Lagrula. A.N., 189, (425). MUlosevich. A.N., 188, (427). Wolf A.N., 188, (263i. (415) Palatia. Hepperger. A.N., 188, (81). (416) Vaticana. Kleine Planeten. A.N., 189, (223). Chatelu, J[ules]. B.A., 28, (212). Dubiago. A.N., 189, (113). Giaoobini. B.A., 28, (12). Luther. A.N., 187, (.385). (417) Suevia. Kleine Phmeten. A.N., 189, (67, 191). (418) Alemannia. Millosevioh. A.N., 188, (49). (420) Bertholda. Kleine Planeten. A.N., 191, (11, 31, 51). (422) Berolina. A.N., 187, (143). (423) Diotima. BUt, van der. A.N., 188, (201). Chatelu. B.A., 28, (212). Dubiago. A.N., 189, (113). Giaoobini. B.A., 28, (12). Pechiile. A.N., 187, (161). (424) Gratia. A.:;., 187, (143). Palisa. A.N., 187, (335). (429) Lotis. Greenwich Roy.\i. Observatory. Gr.O., 1909, (142). Position of Minor Planets. ISO 5910 (431 Nephele. Kleine Planeteii. A.N., 188, (31). Hepperger. A.X., 188, (81). PechUle. A.N. , 190, (441). (432; Pythia. Kleine Planeten. A.X.. 189, (363). BUt. van der. A.X., 188, (201). Chatelu. B. A., 28, (212). Dubiago. A.N., 189, (11.3). Giacobini. B.A., 28, (12j. Luther. A. X., 187, (385). '433) Eros. Gheenwich Royal Observ.\tort. Gr.O., 1909, (143). Wood. Oliservations of Eros. (434) Hungaria- Korrektiorien der Ephemeriden. A.N., 188,(151, 231). Giacobini. B.A., 28, (.301). (437) Rhodia. GhEENWICH IlOYAL OB-SEKVATOHY. Gr.O., 1909, f 141). '438 Zeuxo. Kleine Blaneten. A.X., 190, (.391). Hepperger. A.X., 188, (SI). r441) Bathilda. Kleine Planeten. A.X., 189, 07, 191). (442j Eichsfeldia. Kleine Planeten. A.X., 189, (223). Hepperger. A.X., 188, SI;. (443; Photographica. Kleine Planeten. A.X., 190, '391). (444) Gyptis. Kleine Planeten. A.X., 190, (161, 391); 191,(11,31,51). BUt, van der. A.N., 188, (201). Esmiol. B. A., 28, (458). Lagrula. li.A., 28, (268). Manson. A.X., 188, (337). (446; Aeternitas. Kleine Planeten. A.X., 187, (367). PechUle. A.X., 190, (441). (447) Valentina Kleine Planeten. A.X., 191,(11,31, 51). Dubiago. A.X., 189, (113). Lagrula. B.A., 28, (268). Pecbule. A.X , 187, (161). ^448) Natalie. Hepperger. A.X., 188, 81). (451) Patientia. Kleine Planeten. A.X. ,187, '127, 191). Coggia. B.A., 28, (91 '. (453) Tea. Kleine Planeten. A.X., 189, (241, .323). PecMle. A.X., 190, (441). (454) Mathesis. Hepperger. A.X., 188, (81). Pechiile. A.X., 187, (161). Simonin. B.A., 28, (94). (456) Abnoba Giacobini. B.A., 28, 122). Hepperger, A.X,, 188, (81). Millosevich. A.X., 188, (49). PechUIe. A.X., 187, (161). Simonin. B.A., 28, (94). (462) Eriphyla. Kleine Planeten, A.X.. 191, (11, 31, 51). '465) Alecto. Frederickson, Eppes & Burton. A. J., 26, (170;. (468; Lina. Kleine Planeten. A.X., 190, (391). (471) Papagena Backlund. A.X., 188, (390). Bilt, van der. A.X., 188, (201). Chatelu. B.A., 28, (212). Dubiago. A.X., 189, (113). Giacobini. B.A., 28, (12). Luther. A.X,, 187, (385). PechUle. A. X., 187, (161). '472; Roma. Greenwich Royal Observatory. Gr.O., 1909, (142). Position of Minor Planets, 187 5910 Chatelu. B.A., 28, (295). Dubiago. A.N., 189, (113). Giacobini. l'..A., 28, (122). Lagrula. A. N., 189, (425) ; B.A., 28, (268). MUlosevicli. A.N., 188, (49). Prager. A.N., 189, (185). Simonin. B.A., 28, (292). (474) Prudentia. Hepperger. A.X., 188, (81). Wolf. A.N. , 189, (211). (476) Hedwig. Kleine Planeten. A.N., 190, (391). Hepperger. A. X., 188, (81). (477; Italia- Kleine Planeten. A.X., 188, (113). (478) Tergeste. Giacobini. B.A., 28, (12). Lagrula. B.A., 28, (268). (479) Caprera. GiiKKNwioii Royal Orservatory. Gr.O., 1909, (141). (480) Hansa. Drapczynski. (480) Hansa. A.N., 190, (191). Metcalf. A.X., 190,(31, 87, 127, 191). (481) Emita. Kleine Planeten. A.X., 187, (127). Pechiile. A.N., 190, (441). (482) Petrina. Kleine Planeten. A.X., 191, (11, 31, 51). (483) Seppina. Greenwich Royal Observatory. Gr.O., 1909, (140). (485) Genua. Kleine Planeten. 188, (151). Innes. A.N., 188, (263). Millosevich. A.N., 188, (49). (487) Venetia. Kleine Planeten. A.X., 189, (191). (489) Comacina. Kleine Planeten. A.N., 187, (367j. Berbericli. 1911 LL. A.N. , 187, (383). Lagrula. A.N., 189, (425). Pecbule. A.N., 190, (441). Wolf. A.X., 187, (431) ; 189, (211). (490) Veritas. Millosevich. A. N., 188, (49). Pecbule. A.N., 187, (101) ; 190, (441). Wolf. A.N., 187, (463). (491) Carina. Kleine Planeten. A.N., 188, (31). PecMle. A.X., 190, (441). (494) Virions. Chatelu. B.A., 28, (212j. Dubiago. A.N., 189, (113). Hepperger. A.N., 188, (81). Pecbule. A.N., 187, (161). (498) Tokio. Kleine Planeten. A.X., 190, (51). (499) Venusia. Kleine Planeten. A.X., 187, (127). Giacobini. B.A., 28, (299j. Lagrula. A.N., 189, (425). Wolf. A.N., 189, (211). (500) Selinur. Kleine Planeten. A.N., 191,r(ll,!_31, 51). Giacobini. B. A., 28, (123). Hepperger. A.N., 188, (81). Lagrula. B.A., 28, (268). (502) Sigune. Kleine Planeten. A.N., 188, (151). (503) Evelyn. Kleine Planeten. A.N., 190, (391). Hepperger. A.N., 188, (81). (504) Cora. Kleine Planeten. A.N., 191, ill. 31, 51). (506) Marion- Kleine Planeten. A.N., 189, (223, 323). Position of Minor Planets. 188 5910 (508) Princetonia. Kleine Planeten. A.N., 189, (437). (509; Jolanda. Greenwich Royal Observatory. Gr.O., 1909, (141 j. BUt, van der. A.X., 188, (201). La^ula. B.A., 28, (268). Millosevicli. A.X., 188, (49). PechiUe. A.X., 187, (161). (511) Davida. Greenwich Royal Observatory. Gr.O., 1909, (141). Luther. A.X.. 190, (]27) ; 191, (37). Manson. A.X., 188, (337). Volta. A.X., 187, (^349). (513j Centesima. PecMle. A.X., 190, (441). Wolf. A.X., 187, (335). i514 Armida. A.X., 187, 143,1. LagTula. A.X., 189, (42-5). (515 Athalia. Kleine Planeten. A.X., 188, (31). ^516) Amherstia. Millosevicli. ."ilG; Amlierstia. [Korr. d. Ephem.] A.X., 189, 87). (519) Sylvania. Kleine Planeten. A.X., 188, (393); 189, 07, 191). Innes. A.N., 188, (263). Lagmla. A.X.. 189, (425). 522; Helga. Kleine Planeten. A.N., 187, (127). (524) Fidelio. Kleine Planeten. A.X., 190, (51). Hepperger. A.N., 188, (81). Pechule. '524) Fidelio. [Korr. d. EpLem ] A.X., 190, (223). (527' Euryanthe. GnEESwicH Royal Observatory. Gr.O., 1909, (141y. (528) Rezia. Kleine Planeten. A.N., 190, (51). Dubiago. A. X., 189, (113). Hepperger. A.X., 188, (81). (530) Turandot. Kleine Planeten. A.X., 189, (67). Kleine Planeten. A.X., 189, (223). (532) Herculina. Greenwich Royal Observatory. Gr.O. 1909, (141 J. Luther. A.X., 191, (37). Manson. A.X, 188, (337). Metcalf. A.X., 190, (191). Millosevicli. [Korr. d. Ephem.] A..N. 190,(31, 87). f533j Sara. Kleine Planeten. A.X., 189, (363). (535; Montague. Hepperger. A.X., 188, (81). Millosevicli. A.X., 188, (49). PecMle. A.X., 190, 441). (536) Merapi. PechUIe. A.X., 187, (161). ('538) Frederica- Hepperger. A.X., 188, (81). PechUle. A.X., 187, (161). (540) Rosamunde- Kleine Planeten. A.X., 189, (363). (542) Susanna. Kleine Planeten. A.X., 187, (127j. (544) Jetta. Wolf. A.X., 187, (463). 546) Herodias. MiUosevicli. A.X., 188, (40). PechiUe. A.X., 187, fl61). '549 Jessonda- Hepperger. A.X., 188. (81). f550j Senta. Hepperger. A.X, 188, (81). (551) Ortrud. Kleine Planeten. A.X., 188, (31). Position of Minor Planets. 189 (544; Peraga. Luther. . A.N., 190, ( 127) ; 191,(37). Metcalf. A. X., 190, (191). (555j Norma. Kleine Planeten. A.N., 187, (307). Palisa. [Korr. d. Epliera.] A.N., 187, (.367). Wolf. A.N., 187, (431). (558) Carmen. Giacobini. B.A., 28, (302). Hepperger. AN., 188, (81). LagriUa. A.N., 189, (-125). MiUosevicli. A.N., 188, (49). Pechule. A.X., 187,(101 ) ; 190,(441). Wolf. A.X., 188, (203j. (559) Nanon. Kieine Planeten. A.N., 189, (223, 363). (563) Suleika. Kleine Planeten. A.N., 188, (393). MiUosevich. A.N., 188, (49). (565) Marbachia. Kleine Planeten. A.N., 190, (391) ; 191, (11, 31, 51). (566) Stereoscopia. Hepperger. A. N., 188, (81). (568j Cheruskia. Kleine PJaneten. A.N., 190, (391); 191, (11, 31, 51). (569) Misa. Hepperger. A.N., 188, (81). Lagrula. 1!.A., 28, (268). PecMle. A.N., 187, (101). (577; Kleine Planeten. A.N., 190, (391). (578) Happelia- Kleine Planeten. A.X., 191, (11, 31, 5910 (580) Fiducia. 51) Hepperger. A.X,, 188, (SI). (579) Kleine Planeten. A.N., 190, (391). Hepperger. A.X., 188, (81). Kleine Planeten. .A.X., 191, ;1], 31, 51). (581) Tauntonia. Kleine Planeten. A.X., 191, (11, 31, 51). (585) Hepperger. A.N., 188, (81). MiUosevicli. A.X., 188, (49). PecMle. A.X., 187, (161). (586; Kleine Planeten. A.N., 187, (127). (589) Croatia. Kleine Planeten. A.X., 187, (127).' (590) Wolf. A.X., 187, (463). (592) PecHUle. (592) [1906 TS]. [Korr. d. Ephem.] A.N., 187, (367) ; op." cit. 190, (441). Simonin. B. A., 28, (292). (593) Korrektionen der Ephemeriden. A.X'., 188, (231). Giacobini. B.A., 28, (302). Wolf. A.N., 188, (263). (596) Kleine Planeten. A.N., 188, (31). (598) Kleine Planeten. A.X., 188, (113). Hepperger. A.N., 188, (81). (607J Kleine Planeten. A.X\, 189, (363). (608) Kleine Planeten. A.N., 189, (191, 223, 323). (609) Kleine Planeten. A.X'., 189,(191, 223). (613) Centesima. Kleine Planeten. A.X., 189, (437). PecMle. [Korr. d. Ephem.] A.N., 187, (367). Position of Minor Planets. 190 5910 615; Simonin. P.. A., 28, (94). (616) Hepperger. A.X., 188, (81). Pechule. A.X., 187, (161). (617 Patroclus. Kleine Planeten. A.X., 187, (367); 188, (393). (619) Giacobini. B.A., 28, (123). Lagrula. B.A., 28, (269j. Pechiile. A. X., 187, (161). (621) Kleine Planeten. A.N., 189, (363). (622) Kleine Planeten. A.X., 187, (127). PechUle. A.X., 190, (HI). (623) Millosevicli. (023) [1907 HJj. [Korr. d. Ephem.] A.X., 187, (367). PaUsa. (623) [1907 XJ.] [Korr. d. Ephem.] A.X., 187, (335). Wolf. A.X., 187, (335). f624j Hector. Kleine Planeten. A.X., 189, (191). (626) Kleine Planeten. 187, (367). Simomn. B.A., 28, (292). (635) Abetti. (635) [1907 Z S.] [Korr. d. Ephem.] A.X., 187, (367). Pechttle. A.X., 190, (441). Wolf. A.X., 187, (335). 636) Hepperger. A. X., 188, (81). (638) Kleine Planeten. A.X., 187, (367). (639; Hepperger. A.X., 188, (81). PecbUle. A.X., 187, (161). (642) Hepperger. A.X., 188, (81). 644) Palisa. A.X., 189, (311). (649) Kleine Planeten. A.X., 189, (223). (652; Jubilatrix- Palisa. [Korr. d. Ephem. 1 A.N., 190, (87). (653) Kleine Planeten. A.X., 189, (191). (654 Zelinda. BUt, van der. A.X., 188, (201). Dubiago. A.X., 189, (113). Giacobini. B.A., 28, (122). Millosevicli. A.N., 188, (49). PechiUe. A.X., 187, (161). (656) Kleine Planeten. A.X., 189, (223). (660) Kleine Planeten. A.N., 190, (391). Greenwich Royal Observatory. Gr.O., 1909, (140). Bilt, van der. A.X., 188, (201). Cbatelu. B.A., 28, (294). Dubiago. A.X., 189, (1 13). Giacobini. B.A., 28, (122). Lagrula. B.A , 28, (269). Pechule. A.X., 187, (161). 663) Kleine Planeten. A.X., 190, (391) ; 191, (11, 31, 51J. ^665) Kleine Planeten. A.X., 191, (11, 31, 51). (666) Kleine Planeten. A.X., 189, (67). Innes. A.N., 188, (263). (670) Kleine Planeten. A.X., 188, (31). Hepperger. A.N., 188, (81). (673) Kleine Planeten. A.N., 188, (113). Position of Minor Planets. 191 5910 i674j Racliel. Kleiiie Planeten. A.X., 189, (07, 109, 223). Antoniazzi. A.N., 188, (381). Bilt, van der. A.N., 188, (201). Coggia. B.A., 28, (393). Dubiago. A. N., 189, (113). Hepperger. A.N., 188, (81). Luther. A.N., 187, (385). Millosevich. A.N., 188, (19). MUndler. A.N., 187, (445). (675) Kleine Planeten. A.N., 189, (67, 191). (676) Kleine Planeten. A.N., 189, (67, 223). GiiEEswicii Royal OBSERVAToin". lir.O.. 1909, (140), (677) Kleine Planeten. A.N., 189, (67). Palisa. A.N., 188, (427). Wolf. A.X., 188,(396). (678) Palisa. A.N., 188, (396). (679) Pax. Palisa. A.N., 188, (396). (689) Zita. Kleine Planeten. A.N., 189, (363). (690) Wratislavia. Kleine Planeten. A.N., 187, (127). Giacobini. B.A., 28, (298). Lagrula. A.N., 189, (425). (692) Kleine Planeten. A.N., 189, (67, 191). Hepperger. A.N., 188, (81). (697) Kleme Planeten. A.N., 188, (393). Hepperger. A.X., 188, (81). (698) Hepperger. A.N., 188, (81). (699) Hepperger. A.N., 188, (81). (700) Hepperger. A.X., 188, (81). (701) Kleine Planeten. A.X., 189, (323). Hepperger. A.N., 188, (81). (702) Hepperger. A.N., 188, (81). Ltither. A.N., 187, (385). Millosevich. A.N., 188, (49). Pechule. A.N., 187, (161). (703) Noemi. Hepperger. A.X., 188, (81). Millosevich. A.X., 188, (49). (704) Interamnia. Kleine Planeten. A.X., 190, (161). Abetti. A.N., 187, (89). Bilt, van der. A.N., 188, (201). Coggia. B.A., 28, (394). Dubiago. A.N. , 189, (113). Esmiol. B.A., 28, (459). Fontana. A.N., 190, (215). Gabba. A.N., 188, (421). u. Volta. A.N., 188, (79). Giacobini. B.A., 28, (123). Guerrieri. A.N., 188, (423). Hepperger. A.N., 188, (81). Knopf. A.N., 187, (393). Lagrula. A.N., 189, (425) ; B.A., 28, (269). Luther. A.N., 187, (385) ; 191, (37). Millosevich. A.N., 188, (49). Pechule. A.X., 187, (161). Prim. B.A., 28, (281). (705) Kleine Planeten. A.N., 191, (11, 31, 51). . Wolf. A.N., 189, (211). (706) Kleine Planeten. A.N., 188, (393). Hepperger. A.N., 188, (81). (707) Kleine Planeten. A.N., 187, (367); 188, (393). Hepperger. A.N., 188, (81). Position of Minor Planets. 192 5910 (708) Kleiiio Planeten. A.N., 187, (143). Wolf. A.N., 189, f21I). (709; Kleine Planeten. A.X., 187, (143). 710 Gertrud. Kleine Planeten. A.X., 187, (367); 188, (113j. (711) Marmula. Kleine Planeten. A.X., 188, 113;. '712) Kleine Planeten. A.N., 188, (31, 151). ^^^ Pechule. A.N., 190, (441j. Wolf. A.X., 187, (431,463). (713j ^724) Palisa. A.X.,189, (421). (725j Palisa. AN., 189, (421). (726) Metcalf. A.X., 190, (127, 191). 728; Kleine Planeten. A.X., 190, (391). (729) Kleine Planeten. A.N., 191, (11, 31, 1908 MF. Kleine Planeten. A.X., 189, (191). 1909 HB. Greenwich Royal OGSEavATouy. Kleine Planeten. A.X., 188, (113). Gr.O., 1909, (140;. (714j Korrektioneu der Ephemeriden. A.X., 188, (231). (715) Transvaalia. Kleine Planeten. A.X., 188, (393); 189, (67). Innes. A.X., 188, (263j. Wolf. A.X.. 188, (263). 716 Berkeley. Kleine Planeten. A.X., 189, (109). (717) Kleine Planeten. A.X.,189, (101, 223). 718) Erida. Palisa. A.X., 189, 2'j5, 311). 719, Albert. Ebell, Palisa u. Wood. Planet 1911 MT. A.X., 190, (159;. 1910 JY. Hepperger. A.X., 188, (81). 1911 LG. Kleine Planeten. A.X., 187,(191, 127). 1911 LP. Wolf. .\.X., 187, (463). 1911 LQ. Wolf. A.X., 187, i 163,. 1911 LU. Kleine Planeten. A.X., 188, (393); 189, '67, 191). Innes. A.N., 188, (263). 1911 LY. Kleine Planeten. A.X., 188, (393). Innes. A.X., 188, (263). (720 1911 LZ. Kleine Planeten. A.X., 189, .'437). i8M396; ^^'"°' ^'''"'' ^^^^ ^^' ''''^" (721) ' ^' 1911 LZa. Kleine Planeten. A.X., 189, (363, Kleine Planeten. A.X., 190, (51). ^''^'^' (722; 1911 MA. Kleine Planeten. A.X., 189, 363). Backlund. A. X., 188, 396). (723j 1911 MC. Palisa. A .X., 189, (421). Kleine Planeten. A.X., 189, (67). Phases of Minor Planets. 193 5960 1911 MF. Kleine Planeteii. A.N., 189, (363). PaUsa. A.N., 189, (295, 321). Pechule. 191 1 Ml'\ A.N., 189, (311) ; 190,(411). 1911 MFa. Kleiue Plaiieten. A.N., 191, (11, 31, 51). 1911 MG. Kleine Planeteu. A.N., 189, (191). 1911 MH. Kleiiie Planeteu. A.N., 189, (191). 1911 MK. Kleine Pkneten. A.N., 189, (191). 1911 MM. Kleine Planeten. A.N., 189, (191). 1911 MO. Kleine Planeten. A.N., 189, (223). 1911 MP. Kleine Planeten. A.N., 189, (223). 1911 MQ. Kleine Planeten. A.N., 189, (223). 1911 MR. Kleine Planeten. A.N., 189, (223). 1911 MU. Kleine Planeten. A.N., 1-89, (363). 1911 MV. Kleine Planeten. A.\'., 189, (363). 1911 MY. Kleine Planeten. A.N., 189, (363). 1911 NE. Kleine Planeteu. A.N., 189, (137). 1911 NF. Kleine Planeten. A.N., 189, ;^437). 1911 NG. Kleine Planeten. A.N., 189, (437). 1911 NL. Metcalf. A.N., 190, (127). 1911 NN. Metcalf. A.X., 190, (127). (E-2987) 1912 NU. Kleine Planelen. A.M., 190, (391). 1912 NW. Kleine Planeten. A.N., 190, (391) ; 191,(11, 31, 51). 1912 NX. Kleine Planeten. A.N., 190, (391). 1912 NY. Kleine Planeten. A.N., 190, (3fll) ; 191,(11,31,51). 1912 OA. Kleine Planeten. A.N., 191, (11, 31, 51). 1912 OB. Kleine Planeten. A.N., 191, (11, 31, 51). 1912 OC Kleine Planeten. A.N., 191, (11, 31, 51). 51) 1912 OE. Kleiue Planeten. A.N., 191, (11, 31, 1912 OF. Kleine Planeten. A.N., 191, (11, 31, 51). 1912 OG. Kleine Planeten. A.N., 191, ai, 31 51). 5920 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY. Laves. 19635. Researches on planet (334) Chicago. [Abstract.] 5940 ROTATION, CONFIGURA- TION OF SURFACE. Parkhurst. 19903. Rotation of asteroids. [Abstract.] 5960 TEMPER.\TURE, RADIATION, BRIGHTNESS, PHASES. Biesbroeck. Die Helligkeit des kleinen Planeten 1910 KU Interamnia. A.N., 187, (425). Parkhurst. 19904. Photometric observations of the asteroid Eros. [Abstract.] Wirtz. Beoljaclitimgen des Planeten (433) Eros in den Jahren 1900—1901 am 49 cm Refraktor der Strassburger Stern- warte. A.N., 190, (401). 0 Jupiter. 194 6000 6000 Vincart Jupiter en 1908 JUPITER. 20369. Opposition de 6010 OBSERVATIONS OF POSI- TION OF JUPITER. Greenwich Royal Observatory. Right ascensions and north polar dis- tances of the centre of Jupiter, 1909. Gr.O., 1909, {151}, {84} . Perrot. Observations meridiennes de la planete Jupiter. B.A., 28, (174). Prim. Observations meridiennes de la planete Jupiter. B.A., 28, (350). 6020 CONST.VXTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY OF JUPITER. Greenwich Royal Observatory. Horizontal and vertical diameters of Jupiter, 1909. Gr.O. ,1909, {138}, {75}. Innes. 19477. Relations between the eccentricities and inclinations of the orbits of the planets Jupiter and Saturn. Lohse. 19680. Phjsische Beschafien- heit des Planeten Jupiter. 6040. ROTATION, CONFIGURA- TION OF SURFACE OF JUPITER. Antoniadi. Oljservatious de la pla- nete Jupiter en 1911 avec I'equatorial de 0™, 8.3 de I'Observatoire de Meudon. C.R., 153, (112.3;. Arclieiiliold, Lau u. Williams. Der rote Fleck auf Jupiter. A.X., 188, (329j. Deslandres. Remarques sur la com- munication precedente [de M. E.-M. Antoniadi sur des observations de Jupiter] et sur I'utilite de I'observation des planetes. C.R., 153, (1126). Hauet. 19352. Observations de Jupiter en 1910. Hougb. 19424. Jovian phenomena. [Abstract.] Kritzinger. Gegenwartige Bewegung des roten Fleckes. A.N., 188, (245) ; Notiz iiber das Verhalten des roten Fleckes wahrend der Opposition 1910. op. cd. 189, (321) ; 19591 : Bewegung des roten Fleckes auf dem Planeten Jupiter. Diss. Lau. Mikrometermessungen auf Jupiter. (5. Reihe.) A.N., 188, (349). Lohse. 1 9680. Physische Beschaffen- lieit des Planeten Jupiter. Niesten. 19845. Observations sur I'aspect physique de la planete Jupiter jjendant les oppositions de 1883 a 1896. PMllips. The longitude of the red spot on Jupiter. A.N., 188, (183); 19'J45 : Fifteenth report of the section for the observation of Jupiter ; 19946 : The red spot on Jupiter ; 19947 : A visit to the Meudon Observatory. Jupiter in a great telescope. Stuyvaert. 20310. Observations sur I'aspect physique des planetes Mars et Jupiter. 6070 TRANSITS, OCCULTATION. Banachiewicz. Sur les occultations de I'etoile BD— 12" 4042 le 13 aout 1911. A.N., 188, (333j. Beattie. 18663. The Jovian occulta- tion. [1911 Aug. 13.] Cooke. Occultation of the star B.D. — 12°.4042 by Jupiter observed at the Perth Observatory, Western Australia. M.X., 71, (728j. Innes. 19473. Occultation of star by Jupiter. Roaeby. 20106. The Jovian occul- tation [1911 Aug. 13]. Westland. 20394. Observation of an occultation of Jupiter [1911 June 8]. 6080 PHOTOGRAPHS, MAPS AND DRAWINGS OF JUPITER. Phillips. 19945. Fifteenth report of the section for the observation of Jupiter. SATURN. 6100 GENERAL. Linke. 19670. Saturn, ein kosmo- gonisches Zeugnis. Todd. 20331. Saturn as seen with the eighteeu-inch Clark refractor of Amherst college observatory. [Abstract.] 6110 OBSERVATIONS OF POSI- TION OF SATURN. Greenwich Royal Observatory. Right ascensions and north polar dis- tances of the centre of Saturn. 1909. Gr.O.. 1909, {152}, {^5" . Neptune. 195 6400 Maitre et Lutorano. 01)servationa (nieridieiineb) cle la planete Saturne. B.A., 28,(L'72). Perrot. Observations meridieiines cle la planete Saturno. B.A., 28, (175). Prim. Observations meridieiines de la planete Saturne. B.A., 28, (276). 6120 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY OF SATURN. Greenwich Royal Ohservatory. Horizontal and vertical diameters of Saturn 1909. Gr.O., 1909, {139} , [75] . Innes. 19177. Relations between the eccentricities and inclinations of the orbits of the planets Jupiter and Saturn. 6140 ROTATION, CONFIGURA- TION OF SURFACE OF SATURN. A blue south polar cap on Saturn. Pop. Astr., Northfield, Minn., 18, 1910, (517). Jarry-Desloges. Saturne. A.N. ,190, (167, 223). PMUips. 19944. Observations of Saturn in 1910-11. Wilaon. Early observations of the south polar cap and belts of Saturn. P.A., 18, (541). 6170 TRANSITS, OCCULTATION. Dubiago. Beobachtungen auf den Sternwarten der kaiserl. Universitat Kasan. [1. Plaueten u. Kometen. 2. Sternbedeckungen und Saturn bedeckung durch den Mond. 3. Beobachtungen bei der Mondfiiisternis 16. Nov. 1910.] A.N., 189, (113). Innes. 19168. Occultations of Saturn 13th March, 1910. King. Photographic observations of occultations. Harv.C, 59, (187). Wood. 20453. Occultation of Saturn 13th March, 1910. & Worsell. 20463. Occul- tation of Saturn. 6180 PHOTOGRAPHS, MAPS AND DRAWINGS OF SATURN. Phillips. 19944. Observations of .Saturn in 1910-11. (E-2987) 6190 SPECTRUM. Slipher. 20234. Lo spectre de Saturne. UEA'NUS. 6210 OBSERVATIONS OF POSITION. Greenwich Royal Observatory. Right ascensions and north polar di- stances of the centre of Uranus, 1909. Gr.O., 1909, {153} . Perrot. Observations meridiennes de la planete Uranus. B.A., 28, (175). ' Prim. Observations meridiennes de la planete Uranus. B.A., 28, (277). 6220 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY. Greenwich Royal Observatory. Horizontal and vertical diameters of Uranus, 1909. Gr.O., 1909, {139} . 6300 GENERAL. Lakits. 19616. Die Entdeckung des Neptuns. (Ungarisch.) See. Leverrier'H letter to Galle and the discovery of Neptune. P. A., 18, 1910, (475-476). 6310 OBSERVATIONS OF POSI- TION OF NEPTUNE. Greenwich Royal Observatory. Right ascensions and north polar di- stances of the centre of Neptune, 1909. Gr.O., 1909, {154}, {85]- Perrot. Observations meridiennes de la planete Neptune. B.A., 28, (176). Prim. Observations meridiennes de la planete Neptune. B.A., 28, (277). 6320 CONSTANTS, DIMENSIONS, DIAMETER AND FIGURE, MASS AND DENSITY OF NEPTUNE. Greenwich Royal Observatory. Horizontal and vertical diameters of Neptune, 1909. Gr.O., 1909, {139} . 6400 EXTRA-NEPTUNIAN PLANETS. Dierckx. 19029. La planete trans- neptunienne. Pickering. 19984. The photographic search for planet 0. [Abstract.] 0 2 Satellites of Mars. 196 6530 6530 SATELLITES OF MARS. Lowell. 19694. Phobos and Deimos. Struve. 20306. Die Lage der Mai-Hachse und die Konstanten im Marssyatem. 6550 SATELLITES OF JUPITER. Greenwich Rotal Observatory. Ellipses and transits of Jupiter's satellites compared with tlie Nautical Almanac. Gr.O., 1909, (78;. • Observations of Jupiter's sixth, seventh and eighth satellites from photographs taken with the 30-inch reflector of the Thompson erj^uatorial in the year 1909. Gr.O., 1909, (145-158;. Banachiewicz. Sur les occultations de I'etoile Bb— 12'^ 4042 le 13 aout 1911. A.X., 188, (333;. Barnard. 18633. The fifth satellite of Jupiter. [Abstract.] Buttlar. Bedeckung des Schattens des 1. Jupitertrabanten durch den Trabauten selbst. AS., 189, (359;. Crawford & Champreux. 18946. Orbit of the seventh satellite of Jupiter. [Abstract.] Greenwicli Royal Observatory. Ob- servations of Jupiter's eighth satellite. M.X., 72, (7;. Innes. 19467. Observations of the Galilean satellites of the planet Jupiter : 19470 : Photographic observations of the planet satellites of Jupiter and minor jjlanets. 19475 : Upon the fourth order perturbations in the motions of satellites III. and I\^ of Jupiter. Pidoux. 19984a. Les satellites de Jupiter en 1908. Sampson. 20133a. A discussion of the eclipses of Jupiter's satellites 1878- 1903. Sitter. On the Harvard eclipses of Jupiter's satellite IV., with note by Pro- fessor Sampson. M.N., 71, (596). Wodetzky. 20424. Uber den VIII. Jupiterniond. (Ungarisch.; Wolf. Achter Jupiter-Satellit. A.N., 188, (259;. Wood. 20459. Photographic obser- vation of Jupiter's satellite \ I. 2046L Observation of sixth and eighth satellite of Jupiter. 6560 SATELLITES AND RING SYSTEM OF SATURN. La disparition de I'anneau de Saturne. Gaz. astron., Bruxelles, 1908, (10;. Greenwich Royax Observatory. Ob- servations of Saturn's ninth satellite, Phoebe, from photographs taken with the 30-inch reflector of the Thompson equa- torial in the year 1909. Gr.O., 1909, (159-167). Birkeland. Les anneanx de Saturne sout-ils dus a une radiation electrique de la planete? G.R., 153, (375;; Pheno- menes celestes et analogies experi- mentales [reproduction electrique d'as- jjects analogues a ceux des anneaux de Saturne, de nebuleuses, des filaments noirs du Soleil]. t.e. (938; ; 18721 : A new theory of Saturn's rings. [Trans- lated from'C.R.] Greenwich Royal Observatory. Ob- servations of Saturn's ninth satellite (Phoebe) made in 1910. M.N., 71, (713). Hammond. Observations of the satellites of Saturn at the opposition of ] 908, made with the 26-inch equatorial at the U.S. Naval observatorv. A.J., 26, (175). Pickering. 19983. The tenth satel- lite of Saturn. [Abstract.] Quignon. 20058. Sur la variability des satellites de Saturne. [Roy, de.] 20115b. La reapparition des anneaux de Saturne. Stone. 20281. On the motion of Hyperion. [Abstract.] Stroobant. 20300. La disparition des anneaux de Satuiiie. 20303 : Astronomic. Note sur I'hypothese de ^I. Kr. Birkeland relative a la nature des anneaux de Saturne. Terby. 20316. Sur I'aspect actuel de Saturne, sur la disparition de son anneau au commencement d'octobre et sur deux passages de I'ombre de Titan observes a Louvain. Wood & Worsen. 20463. Occultation of Saturn. 6570 SATELLITES OF URANUS. Bergstrand. 18G95. Sur le mouve- ment du deu.xieme satellite d' Uranus, Umbriel. Hall. Observations and orbit-elements of Oberon and Titania, satellites of Uranus. Observations made at the Comets. 197 oppositionB of 1908, 1909, 1910, with the 26-iiich equatorial of the Naval observatory. A. J., 27, (17). 6580 SATELLITES OF NEPTUNE. Hall. ObservatioDs and elements of the satellite of Neptune, made with the 26-iiich equatorial of the Naval observa- tory. A.J., 26, (179). COMETS. 6600 GENERAL, PHYSICAL APPEARANCE, FAMILIES. Elemente und Ephemeride der Kome- ten 1900 b (Kiess) und 1911 c (Brooks). A.N., 189, 1911,(69-72). La frayeur populaire et las cometes perdues. Ciel et Terre, Bruxelles ; Globe illustre, Bruxelles, 1909, (698). London Royal Astronomical Society, Council of. Comets of 1911. M.N., 72, (299-303). Aitken. Notes from Pacific Coast observatories. A.S.P., 22, (29-31). Antoniazzi. Osservazioni di comete e di pianeti fatte all'equatoriale Dem- bowski del R. Osservatorio Astrouoinico dell'Universita di Padova. A.N., 188, (381). Padova, Silva. Osservazioni di comete all' osservatorio di Padova. A.N., 190, (89). Arclienliold. 18575. Neues Ver- zeichuis von alten Ivometeneinblatt- drucken. 18578 : Die di-ei neuen Kometen Brooks 1911 c, Quenisset 1911 f und Bella wsky 1911 g. Armellim fu Giacomo. Possono le comete essere considerate quali feno- meni d'ottica ? A.N., 188, (59). Armitage. 18581. La comete 1910 et la lumiere zodiacale. Barnard, E[dward] E[merson]. Ob- servations of comets. [Halley's und Faye's Komet.J A.N., 188, (117). 18629 : Astronomical photography with small lenses. [Abstract.] BoMin. 18741. Uber Kometen. (Schwedisch.) Borrelly. 18758. Bemerkungeu iiber die vom Anfang des 16. Jahrhunderts bis heute erschienenen Kometen 6600 Brester J^!. 18780. Du soleil et de ses rayons beta et gamma, qui causent les aurores })olaires, les protuberances et la couronne soiaires et les queues des cometes. Chambers. 18871. Lea comctea jDerdues. Chatelu. Observations de planetes et de cometes faites a I'observaloire de Paris (equatorial de la Tour de I'Est do Om 38 d'ouverture). B.A., 28, (211-212J. Coggia. Observations de planetea et de cometes faites a I'observatoire de Marseille (equatorial d'luchena de Om. 26 d'ouverture). B.A., 28, (91-92, 393- 395j. Constantin. 18929. La comete de Johannesburg vue a Port-au-Prince (Haite). Doberck. Observations of comets. A.N., 190, (221). Dubiago. Beoliachtungen auf den Sternwarteu der kaiserl. Universitat Kasan. [1. Planeteu u. Kometen. 2. Sterubedeckungen und Saturnbedeckung dureh den Moud. 3. Beol)achtungeu bei der Mondtinsternis 16. Nov. 1910.] A.N., 189, (113). Ebell. Gelegentliche Beobachtungen iiber Ilelligkeit und Gestalt von Kome- ten. A.N., 188, (199j. Eginitis. Sur la constitution physique des cometes. A.N., 187, (53). EUerman. An expedition to photo- graph a comet. A.S.P., 22, (165). Esclangon et Courty. Observations de la comete Quenisset [1911 f] et de la comete Brooks [1911 cj, faites a I'Ob- servatoire de Bordeaux. C.R.,153, (619). Esmiol. Observations de planetea et de cometes faites a I'observatoire de Marseille (equatorial d'Eichens de Om 26 d'ouverture). B.A., 28, (453). Fontana. Osservazioni di comete e di pianete. A.N., 190, (215). Franz. Ein schnellbewegtes kome- tarischcs Objekt. A.N., 189, (87). 19188 ; Die Natur der Kometen. Fumess. Observations of minor planets and comets. A.N., 189, (59). Gabba. Osservazioni di comete. A.N., 191, (35). Gautler. 19219. Quelques resultats fournia jDar la pholographie astrono- mique. Comets. 198 6600 Oiacobini. Observations des cometes Quenisset (1911 f) et Beljawski (1911 g), fnites a rubservatoiie de Paris. C.R., 153, (623). Gonnessiat. Observations des cometes 1911 f (Quenisset) et 1911 g (Beljawsky). A.N., 190, (93;. et Rambaud. Observations de la comete d'Arrest (1910 c). B.A., 28, (273-270). Graff. Beobaclitungen von Kometen. A.X., 190, {43j. Greenwich Royal Observatory. Obser- vations of comets made at the ... in 1909-1910. M.X., 71, (475j. Hall, Eppes & Burton. Observations of coiuets, made with the 26-inch and the 12-inch equatorials at the U.S. Naval observatory. A. J., 26, (182j. Hepperger. Planeten- und Kometen- beobachtungen an der k. k. Wiener Stennvarte. A.N., 188, (81). Heyden. ]9387. Es ist Sonnenlicht ! Der Komet iui oiDtischen Experiment, als voriibergehende Sonnenstrahlung erklart und der Wissenschaft unter- breitet. Hinz. 19393. Einige Beobachtungen des Johaniiisljurger Kometen. Hirayama. 19394. The comets of A.D. 373 and 374. Innes. 19464. Colour of comet. Jouret. 19516. Notions de cosmo- graphie. Knopf. Beobachtungen auf der Uui- versitats-Sternwarte zu Jena. A.N., 187, (393j. Kobold. 19561. Berichtiiber Kometen. 111562 : Zusammenstellung der Kome- tenerscheinungen im Jahre 1910. Konkoly-Tbege. Spektroskopische Beobachtungen von Kometen. A.X., 190, (41); 19572: Spektroskopische Beobachtungen der Kometen von 1884 bis 1910, mit liiicksiclit auf die Beob- achtung des Halleyschen Komets. (Ungarisch.) Laldts. 19614. Bahn der Kometen. (Uugar.j Lau, 11. E. Cber die Helligkeit der Kometen 1911 f (Quenisset) und 1911 c (Brooks). A.N., 191, (29). Lowell. 19690. On the capture of comets by Jupiter. [Abstract.] Luther. Ringmikrometerbeobachtun- gen von Kometen j"Hallevscher Komet 1909 c; 1910 a; Favescher Komet 1910 e]. A.X., 187, (34f). Lynn. 19719. Remarkable comets (15lh Ed.). Millosevich. Osservazioni di ]jiane- tine e di comete. A.N., 188, (49) ; Usser- vazioni di comete. op. cit. 191, (33). Mobius. 19798. Astronomie. Grosse, Bewegung und Enti'enaung der llim- melskorper. Tl 2 : Kometen, Meteore und das Sternsystem. Newall. Observations of comets. Comet 1911c (Brooks); Comet 1911b (Kies.s). A.N., 189, (85). Niset. 19862. La comete. Orlow. L'eclat des cometes 1908 111 et 1910 a. A.X., 189, (1). L'eclat des cometes 1911 b et 1911 c. op. cit. 190, (157). Paci. Osservazioni di comete. A.N., 190, (207). Pechule. Planeten- und Kometen- beobachtungen. A.N., 187, (161) ; 190, (441). Perrine. Observations of Winnecke'a periodic comet, made with the 12-inch refractor of the Argentine national ob- servatory, Corddba. A.J., 27, (9). Pickering. Two types of comets' tails. P.A., 18, (314). Pokrovsky. An die Beobachter der Kometen. A.X., 188, (411); Requests to observers of comets. M.X., 71, (572). Prager. Beobachtungen von Kometen. A.X., 188, (217). Righi. 20085. Kometen iind Elek- tronen. Schaumasse. Observations de co- metes. A.X., 189, (377). Schiaparelli. 20156. Kometarische Bahnen, kosmische Meteorstrome und Meteoriten. Schiller. Beobachtungen von Kome- ten. A.X., 187, (121). Kometenbeob- achtungeu am 29-cm-Refraktor der Sternwarte Bolhkamp. op. c'lt. 189, (375). Silbemagel. Beobachtungen von Kometen. A.X., 187, (49). KUhl. Beobachtungen der Kometen 1910 b und e. A.X., 189, (431). Comets. 199 6600 Slocum. Observations of the sun on May JS and 19, 1910. Ap.J., 32, (24). Stromgren. Beobachtungen der Ko- nieten 1911b (Kiess), 1911c (Brooke) und des I'laneten (371) Bohemia. A.N., 189, (275). 20290 : Kosmogonische Stellung der Kometen. Vermandere. 203G1a. The star with the tail. (Flemish.) Vogel. Kometen-Beobachtungen am Kiewer Refraktor. A.N., 190, (205). Voute. Kometenbeobachtungen. A.N., 191, (7). Wada. 20381. Ancient Korean records of the comets. (Japanese.) Weiss. 20391. Kometen, mit be- Bonderer Beziehungauf den Halleyschen. Wirtz. Beobachtungen von Kometen. A.N., 188, (193). Wood. Observations of comets. A.N., 189, (341). Wolf. Photographisclie Aufnahmen in Konigstuhl. A.N., 187, (431, 463). 1531 (Halleyj. Rauscher. 20065. Der Halleysche Komet im Jahre 1531 und die Reforma- toren. 1577 Krebs. 19587. Facsimile einer eigen- hiindigen Zeichnung Tyciio's de Brahe von dem grossen Kometen 1577. 1823 Hnatek. Definitive Bahubestimmung des Kometen 1823. A.N., 188, (3G5). Holetschek. Die von Harding im Berliner Jahrbuch fiir 1827 niitgeteilten Beobachtungen des Doppelschweifes des Kometen 1823. A.N., 188, (245). 1835 III (Halley). Sur le prochain retour de la comete de Halley. Gaz. astron., Bruxelles, 1908, (13-14). Smart. 20243. Le prochain retour de la comete de Halley. 1852 IV. Hnatek. Vorlaufige Aufsuchungs- ephemeride fiir den Kometen 1852 IV (Westphal). A.N., 187, (175). 1859 I Klein. Definitive Bestimmung der Balm des Kometen 1859 (Tempel). A.N., 188, (385). 1861 II Campbell. Historical note. [Comet observed at Volcano observatory, Cali- fornia, June 30, ISGl.] A.S.P.,22, (105). 1882 II stromgren. Theorie der Storungen sonnennaher Kometen, angewandt auf den Kometen 1882 II. A.N., 189, (261). 1886 I Redlich. Ober die Bahn des Kometen 1886 I. A.N., 187, (193). 1892 I Pickering. 19980. Swift's comet, 1892 I. [Abstract.] 1892 V Coniel. Note sur le retour de la comete Barnard 1892 V. A.N., 188, (269) . 1893 I Polak. Determination de I'orbite definitive de la comete 1893 I. A.N., 189, (7). 1902 I Leuschner. 19650. The orbit of Comet 1902 a. [Abstract.] 1902 III Peck & Lindsey. Definitive orbit of Comet 1902 III. A.J., 27, (1). 1905 I (Encke). La comete d'Encke. Ciel et Terre, Bruxelles, 1905, (56-59). 1905 V. Ebell. A.N., 188, (199). 1905 VI. Holetschek. Komet 1905 VI (1906 a Brooks). A.X., 189, (43). 1906 I (Giacobini). Barnard. 18639: Photographic obser- vations of Giacobiui's comet. [Abstract.] 1907 IV (Daniel). Barnard. 18625. Photographic obser- vations of Daniel's comet. Roy de. 201 15d. Observations de I'eclat de la comete Daniel (1907). Comets- 200 6600 1908 III. La nouvelle nomete Morehouse (1908c). Gaz. aBtron., Bruxelles, 1908, (78;. La coniete Morehouse (1908 c; et ses transformatious. Gaz. astron.,Bruxelle9, 1908, (91). La comete Morehouse ; observations photographiques. Gaz. astron., Bru- xelles, 1908, (93-94). Antonlazzl. A.N., 188, (381). Barnard. 18622. 18623. Observa- tions photographiques de la comete 1908 c (Morehouse). 18645: On the photographs of Comet c 1908 (More- housej. [Abstract.] Curtis. 18951. Spectrographic and photographic observations of comet c 1998 (Morehouse). [Abstract.] Ebell. A.X., 188, (199). Emanuelli. 19986. Orbite provisoire de la comete Morehouse (1908 c). Guerrieri. Com eta 1908 III (More- house;. A.X., 188, (195). Hirayama & Toda. 19396. Photo- graphs of comet c 1908 (Morehouse). Orlow. A.N., 189, (1). 1909 I. Greenthch Royal Observatory. Right ascensions and declinations of comet a 1909 from photographs taken with the 30-inch reflector. Gr.O., 1909, (123 . Antoniazzi. A.N. , 188, (381 j. SUbemagel. A.N., 187, (49). 1909 II (Winnecke). Gonnessiat. Observations de la comete Winnecke 1909 d. A.X., 187, (157). 1909 III (Perrine). Greeswicu Royai, Observatory. Right ascensions and declinations of comet b 1909 from photogi-aphs taken ■with the 30-inch reflector. Gr.O., 1909, (123). 1909 IV. New comet e 1909 (Daniel). P. A., 18, (51-53, with fig., 112-113J. Aitken. Observations of comet e 1909 ; Daniel). Lick B., 189, (73;. Antoniazzi. A.N., 188, (381). Chatelu. B.A., 28, (211). Crawford. Note on the orbits of comets llalley, a 1910 and e 1909 (Daniel). A.S.P., 22, (97). Greenwich Royal Observatory. M.N., 71, '477;. Silbemagel. A.X., 187, (49j. Young. Observations of comet e 1909 (Daniel). Lick B., 189, (73). 1910 I. Comet a 1910. P.A., 18, (117, 175- 180, with fig.J. Comet a 1910 observed in Turkey. P.A., 18, (239). La comete de Johannesburg (1910 a). Gaz. astron., Bruxelles, 1910, (18). Aitken. Observations of comet a 1910. Lick B., 189, (74j. Albrecbt. A radial velocity of comet a 1910. A.S.P., 22, (14.3). Barnard. Comet a 1910. P.A., 18, (433). Biesbroeck. Beobachtungen des Kometen 1910 a auf der Sternwarte Uccle. A.N., 187, (107). Blair. Comet a 1910. P.A., 18, (180). Length of tail of comet a 1910 as measured at Washburn college. P.A., 18,(181). Boblin. The .January comet, 1910 a. Ap..J., 33, (185;. Chatelu. B.A.,28, (211, 293;. Curtis. Comet a 1910. A.S.P., 22, (33). Curtiss. Second elements and ephe- meris of comet a 1910. P.A., 18, (302). Delporte. IS986. Comete Innes 1910a. Douglass. Drawings of comet a 1910. P. A., 18, (162j ; Places of comet a 1910. t.c. (238). ' Dubiago. A.X.. 189, ai3). EbeU. A.X., 188, (199j. Greenwich Royal Observatory. ]^[.N., 71, (478;. Hepperger. A.X., 188, (81). Honnorat. 19417. Observations de la comete Innes (1910 a). Innes. 19461. Comet 1910 a. Comets. Knopf. A.N., 187, (393). Leuscliner. Note on tlie multiple orliit solutions ol comet a 1910. Lick B., 6, (13U). Luther. A.N., 187, (3il). Macpherson. The great comet a 1910. P.A., 18, (1'39). Merrill & Olivier. Comet u 1910. A.S.P., 22, (31). Morgan. Elements and ephemeris of comet a 1910. P.A., 18, (238). O'Halloran. Comet a 1910. P.A., 18, (181). Orlow. A.N., 189, (1). Pechule. A.N., 187, (ICl). snaw. M.N., 71, (573). Stroobant. 20302. Astronomie. Note sur la comete 1910 a. Tscherny. Der paradoxe Fall der Bahnbestimmuug des Kometen 1910 a nacli der Methode von Gauss. A.N., 187, (95). 1910 II (Halley). Ephemeris of Halley 'a comet. P.A., 18, (50-51, with fig., llG-117, 242, 301- 305). Halley's comet. P.A., 18, (369). La comete de Halley. Gaz. astron., Bruxelles, 1910, (21-22, 25-26). Les noyaux multijDles de la comete de Halley. Globe illustre, Bruxelles, 1910, (471). Notes on the ajDpearance of Halley's comet. P. A., 18, (113-114;. Observations de la comete de Halley faites a I'observatoire de Lyon. A.N., 190, (7-12). Observations de la comete de Halley [1910]. B.A., 28, (92). Predecouverte de la comete de Halley (1909 c). Gaz. astron., Bruxelles, 1909, (78-79). The passage of Halley's comet, May 18. P.A., 18, (370). The tail of Halley's comet. P. A., 18, (182). The transit of Halley's comet, j\lay 18. P.A., 18, (240-241, -with fig.). 201 6600 Comete de Halley. [E. D.] Bruxelles, Bui. Soc. astron., 1910, (32-31). Aitken. Visual observations of Halley's comet, January-May, 1910. A.S.P., 22, (134). Observations of Halley's comet. Lick B., 189, (74). Antoniadi. Sur la direction de la queue de la comete de Halley le soir du 20 mai 1910. A.N., 188, (15). Antoniazzi. A.N., 188, (381). Archenhold. 18581. Kometen, Welt- untergangsprophezeiungen nnd der Halleyache Komet. Barnard. A.N., 188, (117). . Observations of Halley's comet. A.N., 188, (215). 18626. Halley's comet. 'A correction. P.A., 18, (191). 18627. Photographic obser- vations of Halley's comet. P.A., 18, (321). Beattie. 186G2. Halley's comet. Berthoud. 18699. La comete de Halley vue de Rikatla en mai 1910. Brett. Halley's comet April 20, 23 and 26. P.A., 18, (445). Broom. 18786. Observations of Halley's comet. Briick. Observations de la comete de Halley 1909 c. A.N., 188, (419). Observations de la comete de Halley (1910). B.A., 28, (289). Burnliam. Comparison stars for Halley's comet. A.N., 188, (181). Cliofardet. Observations de la ccmete de Halley 1909c. A.N., 188, (1). Observations de la comete de Halley [1909-1910]. B.A., 28, (124). cnatelu. B.A., 28, (211). Coggia. B.A., 28, (394). Comstock. The passage of Halley's comet. May 18. P.A., 18, (370). Cowell & Crommelin. Investigation of the motion of Hallev's comet from 1759 to 1910. Gr.O., 1909, Appendix, (1-84). Curtis. Observations of Halley's comet 1909 c. A.N., 188. (313). Halley's comet. A.S.P., 22, (33). Comets. 202 6600 Curtis. Photographs of Ilalley's comet made at the Lick Observatory. A.S.P., 22, (117). Delporte. 18987. Comete deHalley. Dubiago. A.X., 189, (113). Eadie. Passaf^e of Hallev's comet, May 18. P.A., 18, (iio). Ebell. Ephemeride des Halleyschea Kometen 1909 c. A.X., 187, (189); 188, (6\, .313). A.X., 188, (199). Eginitis. 19098. Sur la direction do la queue de la comete de Halley le soir du 20 mai 1910. La queue de la comete de Humphreys. 19J42. Atmospheric phenomena and Halley's comet. [Sug- gestions for observers.] 19443. On passing through HaUey. A.N., 188, (129;. Emanuelli. 19108. Sur la rencontre probable de la terre avec la queue de la comete de Halley. Ernst. Die Helligkeit des Halley- schen Kometen. A.X., 187, (303). Flint. The passage of Hallev's comet, May 18. P.A., 18, (370j. Fumesa. A.X., 189, (59). Gabba u. Volta. Osservazioni della cometa di Halley (1909 c). A.N., 187, (125). Gonnessiat. HalleyscherKomet 1909c. A.N., 187, (335J. Observations de la comete deHalley. A.N., 188, (411j. Erratum [betr. Halleyscher Komet]. A.N., 189, rl43j. et 8y. Observations de la comete de Halley. A.X., 187, (351j. Goodbread. Halley's comet. P. A., 18, (576j. Graff. Zur Frage der Schweifrich- tung des Halleyschen Kometen am 20. Mai 1910. A.X., 188, (131;. A.X., 190, 43;. Greenwich Royal Observatory. M.X'., 71, (475). Hall, Eppes Sc Burton. A. J., 26, (182). Hepperger. A.X., 188, (81). Honnorat. 19416. Observations de la comtte de Halley. Homer. 19423. Observations of Halley's comet. Hougb. Observations of comet Halley 1909 c. A.X., 187, (353). the tail of Halley's comet. Innes. 194C3. Halley's comet. Dis- ruption of the tail. Knopf. .\.X., 187, (393). Konkoly Thege. 19572. Spektrosko- pische Beoljachtungen der Kometen von 1884 bis 1910, loit Kucksicht auf die Beobachtung des Halleyschen Komets. (Ungarisch.) Eotelow. 19580. lonisation der At- mosphare in Jekaterinoslaw wahrend des Durchganges des Halleyschen Kome- ten. Ledn. Halley's comet in Mexico. P.A., 18, (428). Ling. Observations of Halley's comet, made at Xewton oljservatorv, Allegheny college, Meadville, Pa. A.J., 26, (161). Linke u. Ott. 19671. Geophysika- lische Beobachtungen auf dem Feldberg i. T. gelegentlich des Voriibergauges des Halleyschen Kometen. [Mit .\nhaug: Taglicher Gang des luftelektrischen Potentialgefalles und des lonengehaltes der Luft.] Luther. A.X., 187, (341). Maggini. 19732. Sur quelques aspects presentes par la comete de Halley. Metcalf. Observations of Halley's comet. P. A., 18, (433). Millosevich. A.X., 188, (49j. Morebouse. I'hotographs of Halley's comet. P.A., 18, (370). Halley's comet. P.A., 18, (426j. Moris. 19811. Le passage de la comete de Halley au Congo. Morrison. 19813. Observations of Halley's comet. Nijland. 19856. [Beobachtungen iiber] die Helligkeit und die Schweif- lange des Halleyschen Kometen [in Utrecht und an andernOrtenangestellt]. (Hollandisch.) Notcutt. 19874. Observations of Halley's comet. O'Halloran. Halley's comet. P.A., 18, (lb3,. Comets. 203 6600 Olivier. I'hysicalephemerisof Halley's comet. A.S.P., 22, (34). Oppenbeiin. ]'J886. Zur bevorste- henden Wiederkelir dea lialleyachen Kometen. PecMle. A.N., 187, (161). Perrine. Observations of Ilalley's comet, made with the 12-iacli refractor of the Argentine national observatory, Cordoba. A.J., 27, (14). Resume of observations of Haliev's comet at Cordoba. A.S.P., 22, (LUl).' Philippot. 19941. La comete de Halley. Pickering, E. C. Comparison stars for Halley's comet. Harv.C, 156, (1). Brightness of Halley's comet. Ilarv.C, 157, (1). Pickering', W. II. Halley's comet. Suggestions for its observations. P. A., 18, (129). Popoflf. Observations de la comete de Halley faites a I'Observatoire de Sofia (Bulgarie). C.R., 150, (1406). Porter & Yowell. Observations of Halley's comet, made with the 16-inch equatorial at the Cincinnati observatory. A.J., 26, (178). Prager. A.N., 188,(217). Quignon. 20056. Observations de la comete de Halley. Rigge. The apparent path of Halley's comet in the sky. P.A., 18, (165). Rudge. 20118. Abstract of physical observations taken during the proximity of Halley's comet to the earth. Schneider. 20172. Mitteilungen iibei den Halleyschen Kometen aus den Tropengegendeu. Sclineider. Beobachtungen des Halley- schen Kometen 1909 c zur See. A.N., 187, (135). Schwarzschild u. Kron. 20187. Helligkeitsverteilung im Schweif des Halleyschen Kometen. Seagrave. Epliemeris of Haliev's comet. A.J., 26, (170) ; P.A., 18. (241, 627). Halley's comet, Mav 18-20. P.A., 18, (431). Searle. Near approach of Halley's comet to Venus. P. A., 18, (114). Shaw. M.N., 71, (573). Silbemagel. A.N., 187, (49). Sperra. Comet Halley. P. A., 18, (243, 427). Stehbins. The brightnesri of Halley's comet as measured with a selenium photometer. Ap.J., 32, (179). Struve. Beobachtungen des Halley- schen Kometen auf der kouigl. Stern- warte zu Berlin. A.N., 188, (5). Swartz. Observations of Halley's comet. P.A., 18, (431). Thomson. 20323. On a variation in the intensity of the penetrating radiation at the earth's surface observed during the passage of Halley's comet. [Abstract.] Tournier. 20337. La comete de Halley. Vogel. Beobachtungen des Halley- schen Kometen 1909 c am Kiewer Refraktor. A.N., 189, (59). Voute. Beobachtungen des Hallev- schen Kometen 1909 c. A.N., 187, (347). Weinek. Ringmikrometer-Beobach- tuugen des Halleyschen Kometen an der Prager Stern warte. A.N., 187, (443). WUczewski. The real and apparent positions of Halley's comet during its period of greatest importance. P. A., 18, (257). Wilson. Sketches of the jets in the head of Halley's comet. P.A., 18, (477). Wolf. A.N., 187, (431). Wood. 20455. Observations of Halley's comet 1910. Photographic results. 20457. Halley's comet. Additional observations and remarks. 1910 b. Comet b 1910. P.A., 18, (56i with Unenouvelle comete, 1906 b (Metcalf). Gaz. astron., Bruxelles, 1910, (42). Abetti. Cometa 1910 b (iletcalf). A.N., 187, (171). Borrelly. Observation de la comete 1910 b Metcalf. B.A., 28, 1911, (43). Chatelu. B.A., 28, (293). Coggia. B.A., 28, (394). Dubiago. A.N. , 189, (113). Comets. 204 6600 Ebell. Ephemeride des Kometen 1910b (Metcalf). A.N., 187, (187) ; 188, (119J. Eaton. Elements and epliemeris of Comet b 1910 (Metcalfj. Giacobini. B.A., 28, (14). Gonnessiat. Observations de la comete 1910 b (Metcalf). A.X., 189, (335;. Greenwich Royal Observatory. il.N., 71, 478'. HaU, Eppes & Burton. A.J., 26,ri82). Hepperger. A.X., 188, (81). Howe. tract.] Bellamy. Fourth note on the number of faint stars with large proper motions in the Oxford zones. M.N., 71, (582) ; Fifth note on. ZoneH-25''. op. cit. 72, (65). Boss, B. Systematic proper-motions of stars of type B. A.J., 26, (163). Boss, L. Precession and solar motion. Third paper. Relation of systematic motions to spectral types. A.J., 26, (187). Bumham. The proper motion of BD -f33° 99. A.N., 187, (381); Measures of the jjroper motion star $ G.C. 6869. M.X., 71, (506) ; Measures of a small star with a large proper motion, t.c. (508) ; Measures of the proper motion star, 82, 190. t.c. (691). Fixed Stars. 213 7070 Campbell. Some peculiarities in the motions of tlie stars. Lick 13., 6, (125). Comstock. The proper motions and paraihixes of tlie tenth magnitude stars. A.N., 187, (113); 18918: rreliminary announcement witii regard to the proper motions of certain faint stars. [Abstract.] Doberck. 19036. On the proper motions of tlie fixed stars. Dubiago. Eigeubewegungen von Steruen in der Kasaner Zone der AG + 75" bis + 80» Deklination. A.N., 188, (121). Halm, further considerations relating to the sj'stematic motions of the stars. M.N. ,71, (GIO). Kaptejm. 19525. On the systematic proper motion of the Orion stars. (Address.) Kast. 19527. The mean right ascen- sions and jDroper motions of 130 stars. [Thesis.] Lau. Mikrometermessungen von Sternen mit grosser Eigenbewegung. A.N., 189, (197). Norlund. Beol)achtungen am Meridi- ankreis der Kojoenhagener Universitats- Sternwarle. A.N., 189, (17). Oppenhelm. Eigenbewegungen der Fixsterne. A.N., 188, (137). Redlich. Ober die Bahn desKometeu 1886 1. A.N. , 187, (193). Russell. 20126. Determinations of stellar parallax, "[from photographs taken at the Cambridge observatory (England) by Arthur R. Hinks and the writer.] " SchwarzscMld. Ein Theorem zur Verteiluug der Sterngeschwindigkeiten. A.N., 19i; (1). Seeliger. Zusammenhang der Pa- rallaxen der Sterne mit ihren Eigen- bewegungen und Geschwiudigkeiten ini Visionsradius. A.N., 190, (209). Tucker. 20348. Meridian circle positions of Nova Persei. [Abstract.] Wilkens. Apexbestimmung aus 620 Sternen mit meist grosserer Eigenbewe- gung. A.N., 188, (185). 7070 PARALLAX. London Royal Astronomical Society, Council of. Stellar Parallax. M.N., 72, (319-327). Altken. 18522. Note on the parallax of Nova Persei. [Abstract.] Cliase. 18879. Refraction of red stars. [Abstract.] 18880 : TJie series of parallaxes of large proper motion stars made with the Yale heliometer. [Abstract.] 18881 : On the parallax of Nova Persei. [Abstract.] Comstock. 18911. The proper motions and parallaxes of the tenth magnitude stars. 18912: Research work at the Washburn observatory. Stellar parallax, the lunar atmosphere, the ocular helio- meter. [Abstract.] Davis. 18979. Remarks regarding tlie parallaxes of 61^ and 62^ C^ygni and the probable physical connection of the two stars. [Abstract.] Flint. 19164. Meridian observations for stellar parallax. [Absti-act.] 19166: Results of meridian observations for stellar parallax made at the Washburn observatory. University of Wisconsin. [Abstract.] Grossmann. Bericht und Vorschlage der Parallaxen-Kommission der Astro- nomischen Gesellschaft. A.N., 188, (341). Hertzsprung. Doppelsterne mit eben merklicher Bahnbewegung. A.N., 190, (113). Kapteyn. On the average parallax of the stars of the fourth type as com- pared with that of stars of other tvpes. Ap.J., 32, (91). & Frost. On the velocity of the sun's motion through space as derived from the radial velocity of Orion stars. Ap.J., 32, (S3). Lau. Parallaxe des Doppelsterns Krueger 60. A.N., 190, (97). Plummer. Hypothetical parallaxes of the brighter stars of type A. M.N., 72, (170). Russell. 20124. On the distances of red stars. [Abstract.] 20125 : On the probable distance of Orion. [Abstract.] 20126 : Determinations of stellar parallax. ScMesinger. Photographic determina- tions of stellar jiarallax made with the Yerkes refractor. Ap.J., 32, (372); 33, (8, 161, 234, 353, 418); 34, (26); 20161 : A device for eliminating guiding error from j^hotographic determinatirns of stellar parallax. [Abstract.] Fixed Stars- 2U 7070 Seeliger. Zusammenhaug der Paral- laxeu der Sterne mit ihren Eigenbewe- gungeu und Geschwiiidigkeiten im Visionsradiiis. A.X., 190, ('20d). Slocum. Parallax of 17 Lyrte C. M.N.,71, ',579j. 7080 MAGXITCDE. Observations with the meridian photo- meter during the years 1907 and 1908. Harv.C, 64, (191-199, with tabs.). Comstock. 18923. The luminosity of the brighter lucid stai-s. [Abstract.] King. Photographic magnitudes of 15.3 .'^tars. Harv.C, 59, (157). Leayitt. 1964.3. Standard photo- graphic magnitudes. [Abstract.] Nijland. Beobachtungen der Xova a37. 1910j und des Sterns 9. 1911 Lacertae. A.X., 191, (25). Paxkhurst. 19906. The coordination of visual and photographic star magni- tudes. [Abstract.] Pickering. Photographic magnitudes. Progress to July, 1910. Harv.C, 160, (1); 199.51 : Standard photographic magnitudes of bright stars. 19965 : The Revised Harvard photometry. [Abstract.] 199G6 : Standards for faint stellar magnitudes. [Abstract.] 19968 : Systematic study of faint stars. [Ab- stract.] Popofif. Sur une cause qui pent in- fluer sur I'estimation de la grandeur des etoiles. C.R., 153, (1210). Salet. Sur I'absorption de lalumiere des etoiles par les meteoiites. B.A., 28, 241). 7120 COLOUR (IXTEGRATED LIGHT). Bergstrand. 18696. Recherches sur les couleurs des etoiles fixes. Bums. The color of the stars in the great nebula in Orion. A.S.P., 22, (185). Comstock. 18914. Some researches ill stellar color. [Abstract.] Hagen. Various scales for color- estimates. Ap.J., 34, (261). Hertzsprung. 19385. Verwendung photographischer effektiver Wellenlan- gen zur Bestimmung von Farbenaquiva- lenten. Innes. Xote on Bell's paper on star colors. Ap.J., 32, (321); 19469: Ob- servations of red stars. Kriiger. 19592. Die Erforschung der I'arben der Fixsterne. Mundler. Notiz betreffend einen roten Stem. A.X., 187, (79;. Slocum. Colored stars near nova 137. 1910 Lacertae. A.N., 188, (75). Worsell. 20470. Observations of star colors. 7140 RADL^TIOX. Harkanyi. 19337. Strahlung und Tem^jcratur der Sterne. Hertzsprung. 19385. Verwendung photographischer effektiver Wellenlangen zur Bestimmung von Farbenaqiiiva- lenlen. Hnatek. Bestimmung einiger effekti- ver Sterntemperaturen und relativer Sterndurchiuesser auf spektralphoto- graphischem Wege. A.X., 187, (369). Wilsing. On the temperatures of the stars. Ap.J., 33, (8.5;. 7150 .STELLAR DL\METERS. Hnatek. Bestimmung einiger effekti- ver .Sterutemiieraturen und relativer Steriidurchmesser auf spektralphoto- graphischem Wege. A.X., 187, (369). Nordmann. Sur les diametres effectifs des etoiles. CR., 152, (73). 7160 DISTRIBUTIOX IX HEAVEXS, ACCORDIXG TO NUMBER. MAGXITUDE, COLOUR, Etc. London Royal Astronomical Society, Council of. Stellar distribution and drift. M.X., 72, (316-319). Barnard. 18624. Vacant regions of the sky. [Abstract.] ^ Campbell. On the motions of the brighter class B stars. Lick B., 6, (101). Comstock. 18920. Distribution of the stars. [Abstract.] 18922 : The significance of the star ratio. [Abstract.] Eddington. 19090. Stellar distribu- tion and movements. [Abstract.] Kovesligethy. 19568. Der Sternen- himmel. (Ungarisch.) Russell. 20126. Determinations of stellar parallax. Double Stars. Schwarzschild. Ein Theorem zur Verttulmig dcr Sterngeschwincligkeilen. A.N., 191, (1). Seeliger. 20216. Raumliche Vertei- luiig cier Sterne im sclieiaatischen Stern- system. Stroobant. 20294. La distribution (los etoiles par rapport k ]a voie lactee d'apres la carte et le catalogue photo- graphiques du eiel (zones de Paris, Bordeaux, Toulouse, Alger et San- Pernando). 7500 DOUBLE STARS AND MULTIPLE STARS. London Royal Astronomical Society, Council of. Double stars. M.N., 72, (310-313). Aitken. The definition of the term double star. A.N., 188, (281) ; 18523 : On the discovery of 300 double stars. [Abstract.] 18524 : The Lick observa- tory double-star survey — A report of progress. [Abstract.] Archenhold. 18574. Spektroskopi- sche uiid visuelle Doppelsterue. [Re- ferat.] Doolittle. 19051. Remeasurement of the Hough double stars. [Abstract.] Hussey. 1944G. Discovery of five hundred new double stars. [Abstract.] Lalive. 19618. Considerations lii- storiques, etoiles doubles. Lewis. 196C4. Some remarks on limiting the cataloguing of double stars. Pickering. 19982. A systematic error in distance measures of close double stars. [Abstract.] Plassmann. 19998. Doppelsterue. ScMesinger & Baker. Spectroscopic and visual binaries. P. A., 18, (401). See. The evolution of double and multiple stars. A.N., 190, (39). 7510 OBSERVATIONS (VISUAL AND PHOTOGRAPHIC). Greenwich Royal Observatory. Micro- metric measures of double stars made with the 28-inch refractor, 1909. Gr.O., 1909, (81-115). Abetti. Misure di stelle doppie. A.N., 188, (21). '^^5 7510 Aitken. New double stars. A.S.P., 22, (95) ; Note on the double star 02 25 L t.c. (llOj. Beattie. 18(;C5. Some measui-es of Southern doul)lea. Burnham. Douljle star measures. A.X., 189, (385j. Doberck. Sutton double star observa- tions. (Continued from A. N, 4394-95.) A.N., 187, (305) ; 188, (317j ; 189,(297) . Doolittle. The occultation of t Tauri, (Hough 642). P. A., 18, (293) ; 19044 : The double star work of the Flower observatory, University of Pennsylvania. [Abstract.] Edittburgh Royal Observatory. Mea- sures of double stars. M.N., 71, (479). Astrographic measures of double stars (zone — 40°) by R. W. Wrigley. M.N., 72, (34). Espin. Micrometrical measures of double stars (ninth series). M.N., 72 (191). Forgeron. Mesures micrometriques d'etoiles doubles faites a I'Observatoire de Paris en 1909. B.A., 28, (87). Greenwich Royal Observatory. Results of micrometrical measures of double stars made with the 28-inch refractor in the year 1910. M.N., 71, (728). Hassenstein. 19349. Mikrometer- messungen von Doppelsternen am 32.5 cm-Refraktor, ausgefiihrt in den Jahren 1898-1909. Hertzsprung. Doppelsterne mit eben merklicher Balinbewegung. A.N., 190, (113) ; Notiz iiber Groombridge 34= Lalande 248. t.c. (117). • Hough. 19429. Doolittle's measures of the Hough double stars. [Abstract.] Ichinohe. 19451. Observations of double stars. Innes. 19457. Observations of southern double stars. 19458 : New southern double star. 19459 : Double stars in motion. 19465 : Double stars in cluster near 12 Canes M. Jonckheere. Cent nouvelles etoiles doubles. A.N., 187, (393). Cent nouvelles Etoiles doubles. A.N., 188, (375); Mesures d'etoiles doubles k I'Observatoire de Lille. M.N., 72, (156). Double Stars. Lau. ilikrometermessungen von Dop- pelsternen. A.N., 187, (449) ; Photo- graphisclie Doppelsteniinessungen. op. cit. 190, (77j ; I'arallaxedes Doppelsterns Knieger CO. t.c. (97j. Niesten. 19844. Mesures micronie- triques d'etoiles doubles faites de 1878 a 1806. Olivier. Measures of one hundred and fifty-nine double stars. Lick B., 190, (76). Roe. New double stars. A.N., 188, (373; ; 190, (137). Roe, jiui. New double stars. P. A., 18, r354j ; New double stars, and double star work. t.c. (554). Stroobajit. 20296. L'etoile double 61 du Gygne. Struve. 20305. Vorteile der Anwen- dung eines Reversionsprismas bei Dop- pelsternmessuEgen. TMele. Remarques relatives h mes mesures photographiques d'etoiles doubles. B.A., 28, (5-7). Trousset. ilesures micrometriques d'etoiles doubles, faites a I'Observatoire de Paris en 1909. B.A., 28, (89). Voute. Doppelsternmessungen. 1. Serie. A.N., 187, (421); Doppelstern- messungen. op. cit. 190, (1). 7520 LISTS. CATALOGUES. COLOURS OF DOUBLE STARS. SPECTROSCOPIC BINARY SYSTEMS. SPECTROSCOPIC OBSERVATIONS OF VISUAL BINARY SYSTEMS. INVISIBLE COMPANIONS. DISTRIBUTION IN HEAVENS ACCORDING , TO NUMBER, MAGNITUDE, COLOUR, Etc. Aitken. One hundred new double stars. Seventeenth list. Lick B., 188, (70; ; 18525 : Distribution of double stars in the zone -|- 50° to +90°. [Ab- stract.] Espin. New double stars. M.N., 72, '191;. Innes. 19457. Observations of southern double stars. 19458 : New southern double star. 19465 : Double stars in cluster near 12 Canes M. Jonckheere. Sur la decouverte d'etoiles doubles nouvelles a I'Observa- toire de Hem. C.R., 152, (575) ; Cent nouvelles etoiles doubles. 5me Serie ^IG 7510 M.N., 71, (750). Id. 6me Serie. op. cit. 72, (45) ; Nouvelles etoiles doubles. t.c. (1G2, 188). Ludendorar. 19699. Verzeiohnisder Bahneleineute spektroskopischer Dop- pelsterne. 7530 DISCUSSION OF ORBITS, i DIMENSIONS, MASS AND DISTANCE OF BINARY SYSTEMS. Aitken. Note on the masses of visual binary stars. P. A., 18, (483). Comstock. 18916. The determina- tion of douljle star orbits. [Abstract.] 18917 : The masses in 85 Pegasi. [Ab- stract.] Doberck. On the orbit of 2 2525. A.N., 189, (41); On the orbit of 4 Aquarii. op. cit. 190, (I09j. Hertzsprimg. Doppelsterne mit eben merklicher Buhnbewegimg. A.N., 190, fll3i. Hussey. 19445. The period of Delta Equulei. [Abstract.] Lau. Parallaxe des Doppelsterns Krueger 60. A.N., 190, (97). Ludendorff. Die Massen der spek- troskopischen Doppelsterne. A.N., 189, (145). Pracka. 20031. Bahnuntersuchung des photometrisehen Doppelsystems RZ-Aurigae. Teil I. Reduction photo- metrischer Beobachtungen. (Czechisch.) Russell, ifass-ratios in the systems of Kriiger 60 and Castor. Ap.J., 32, (363; ; 20126: Determinations of stellar parallax. 7600 VARIABLE STARS, IN- CLUDING NEW AND LOST STARS. Le prochain maximum d'eclat de l'etoile Alira Ceti. [G. V. B.] Bruxelles, Bui. Soc. astron., 1906, (341-343). Maxima of variable stars of short period not of the Algol type. P.A., 18, (56-58, 122-123, 185-187, 247-249, 309-311, 378-380, 435-437, 511-512, 570-572, 634-635). Minima of variable stars of the Algol type. P. A., 18, (54-56, 119-122, 184- 185, 246-247, 308-.309, 375-378, 438- 440, 509-511, 568-570, 632-6341 Variable Stars- 217 Mitteihingen liber Nova 137. 1910 Lacertae. A.N., 187, 1911, (93-96). Mitteihingen iibei- Veranderliche. A.N., 190, 1912, (427-432). 7 Get! ; RR Monocerotis ; 6. 1907 Audroniedae ; 132. 1908 Pegasi; ST (25. 1910) Cephei ; 45. 1911 Cassiopeiae; 17. 1912 Aiirigae. New variable 32. 1910 Aquilae. P.A., 18, (374). Nova 18. 1912 Geininorum. A.N., 191, 1912, (31-32, 45-50). Nova (137. 1910) Lacertae. A.N., 188, 1911, (357-364). The new star iu Sagittarius. P. A., 18, (564, with fig.). 31 neue veranderliche Sterne. A.N., 190, 1911, (107-110). Zwei neue kurzperiodische Verander- liche. A.N., 189, 1911, (71-72). [36. 1911 Librae; 37. 1911 Librae.] London Royal Astronomical Society, Council of. Variable stars. M.N., 72, (314-316). Abetti. Nuova variabile 44. 1911 Cygni. A.N., 189, (343). Aitken. 18522. Note on the parallax of Nova Persei. [Abstract.] Albrecht. Nova 137. 1910 Lacertae. A.N., 190, (23j. Archenhold. 18568. Die Entdek- kung eiues neuen Sterns im Sterubilde der Eidechse. Astbury. A new variable star 45. 1911 Cassiopeiae. A.N., 189, (357). Bailey. 18598. Variable stars in clusters. [Abstract.] 18599 : The rate of increase iu brightness of three vari- able stars in the cluster Messier z. [Ab- stract.] 18601 : Some variable star problenis. [Abstract.] Barnard. Prediscovery photographs of Espiu's Nova Lacertae. A.N., 187, (63). 18631 : Variable stars in clusters. [Abstract.] 18640 : On the constancy of the period of the variable star, M 5 (Librae) No. 33. [Abstract.] 18642: On the focal changes in Nova Persei and on the focus of some of the WolE-Rayet stars. [Abstract.] Bemporad. Osservazioni fotometriche della Mira Ceti eseguite a Catania dal- I'ottobre 1909 al marzo 1911. A.N., 188, (301) ; Nuova variabile 42. 1911 Hvdrae. op. cit. 189, (225). 7600 Borrelly. Oljservations de la [vari- able] Nova [1910] du lizard (Espin). 15. A., 28, (290). Brook. 18784. Variable star section reports. 1. SS Cygni in 1910. 2. Long period variables in 1910. 3. Thre_e irregular variables in 1910. 18785. 4. (7793) SS Cygni in 1911. Brown. The long period variable RT Cygni _(Ch. 7085) in 1910. M.N., 71, (486, with pi.) ; Tlie long period variable V Persei (Ch. 678) in 1909-1911. t.c. (520). Campbell. Approximate magnitudes of variable stars. P.A., 18, (58). [Cannon.] Nova Sagittarii 3. Harvard college observatory circular 163. A.N., 188, (77); 6 neue Veranderliche. [17. 1911 Cassiop., 18. 1911 Aurigae ; J9. 1911 Geminor. ; 20. 1911 Ophiuchi ; 21. 1911 Sagittarii; 22. 1911 Sagittarii.] t.c. (259). 18851 : Maxima and minima of variable stars of long period. [Ab- stract.] 18852: A variable star whose light curve resembles that of R Coronas Borealis. [Abstract.] Ceraski. Trois variables nouvelles. [2. 1911 Lyncis; 3. 1911 Cancri ; 4. 1911 Cancri.] A.N., 187, (77j ; Trois variables nouvelles. [6. 1911 Trianguli ; 7. 1911 Piscium; 8. 1911 Pisciura.] t.e. (159) ; Deux variables nouvelles. [10. 1911 Lyncis; 11. 1911 Persei.] op. cit. 188", (13); Deux nouvelles variables. [12. 1911 Persei, 13. 1911 Persei. t.e. (31) ; Une nouvelle variable 16. 1911 Trianguli. t.c. (117); Une nouvelle variable 23. 1911 Persei. t.c. (215) ; Deux nouvelles variables [47. 1911 Corouae borealis; 48. 1911 Pegasi]. op. cit. 190, (31). u. IcMnobe. Neue Veran- derliche. [24. 1911 Orionis; 25. 1911 Tauri ; 26. 1911 Tauri ; 27. 1911 Cygni.] A.N., 188, (293). u. Pracka. Mitteilimgen iiber Veranderliche. [49. 1911 Corouae borealis; 50. 1911 Canum venaticorum ; 59. 1911 Andromedae]. A.N., 190, (85). Cerulli u. Kilstner. Neuer Verander- licher P,D + 50» 2999 = 88.1911 Cygni. A.N., 190, (163). Chase. 18881. On the parallax of Nova Persei. [Abstract.] Curtis. Pliotographic positions of Nova Lacertae. Lick B., 6, (99). Variable Stars- 218 7600 D'Esterre. New variable star 80.1911 Lyrat-. A. N., 190, (141) ; Photographic observations of a Nova or new variable star 87.1911 Persei. t.e. (163). Dugan. 19061. The Algol system, RT Persei. [Abstract.] 19062: The Algol 8y.stem, Z Draconis. [Aljstract.] Dancaa. Correction to L. 0. bulletin No. 151. [The orbits of Cepheid vari- ables.] LickB., 6, (154j. Dun^r, Hartwig u. Muller. Benen- nung von ueii entdeckten veriinderlichen Sternen. A.N., 190, (57). Enebo. Neuer Veranderlicher 5. 1911 Lacertae. A.N., 187, (137); Bestati- gung der Veranderlichkeit einiger neu entdeckten Variablen. op.cit. 188, (147); Uljer vier Algolsterne. [SX Draconis ; RW Lacertae ; RW Ursae majoris ; UU Andromedae.] t.e. (247) ; Beobach- tungen von langperiodischen Variablen. t.e. (311). Frost. Observations of Nova Lacertae at the Yerkes observatory. Ap.J., 33, (410J. Fumess. Var. SX. Draconis. A.N., 187, (383;. & Sutton. Oljservations of long-period variables. A.J., 27, (24, 28). Grover. 19290. Report of the Rousdon Observatory, East Devon. Obserratious of long period variable stars during the year 1911. Guerrieri. Posizione media al 1911. 0 della Nova (137. 1910; Lacertae di Espin. A.N., 188, (391). Gutlmick. Neue Bestatigung der Ver- anderlichkeit von RQ (32; Cassiopeiae. Vorl. Mitt, liber einige neue verander- liche Sterne sowie uber f Cassiopeiae. A.N., 189, (61); Veranderliche Sterne kurzer Periode. t.e. (137). [38. 1911 Cassiopeiae; 32 Cassiopeiae; 39. 1911 Comae; 46. 1911 Herculis ; 41. 1911 Canum venatic. ; (p (35. 1911) Persei.] Hagen. 19309. On the meaning of the star magnitudes of Father Hagen's Atlas of variable stars. [Abstract.] 19310: Note on two variable star cata- logues. [Abstract.] Hartwig. 19347. Katalog und Ephe- meriden veranderlicher Sterne fiir 1911 u. 1912. Haynes. 19355. The Algol variable RX Draconis (121. 1906;. Haynes & Shapley. 19350. The Algol variable RZ Draconis (26. 1907). HelfiFrich u. Massinger. Helligkeits- schiitzungen von X Piscium naeh photo- graphischen Aufnalimen. A.N., 190, (111). Hertzsprung. Nachweis der Ver- anderliclikeitvon a Ursae minoris. A.N., 189, (89) ; Hearbeitungder J. F. Schmidt- schen Beobachtungen von 68 ;u llerculi.s. t.e. '245) ; Photographische Beobachtung eines Hauptminimums von 68 yu Herculis. t.e. (25.5;. Hinks. Note on the variable 97. 1910 Cygni. M.N., 71, (517). IcMuohe. On the variable star TT Aquilae. A.N., 187, ^299) ; Observations of Mira Ceti. op. cit. 189, (1.55) ; 19450 : On the period and light curve of the variable star RZ Draconis. K[o]b[old]. Var 6. 1909 Ursae majoris. A.N. , 189, fill) ; Neuer Veranderlicher 46. 1911 Tauri in den Plejaden. t.e. (455). Eohl. Astronomical observations in 1909. A.S.P., 22, (21-26). Eosinska. 19578. [Observations des occultations d'Algol.] (Polish.) Kostinsky. Note sur I'aspect de Nova Lacertae. A.N„ 189, (111). Lau. Notiz betreffend die Verander- lichkeit von o Herculis. A.X., 190, (139;. Lazzarino. Osservazioni fotometriche della variabile W Ursae majoris. A.N., 190, (95;. Leavltt. 19010. Variable stars in large nebulous regions. [Abstract.] 19041 : New variable stars in the small Magellanic clouds. [Abstract.] 19642: Light curves of new variable stars of the Algol type, and of short period. [Ab- stract.] Lowell. Neue Veranderliche. [28. 1911Scorpii; 29.1911 Librae.] A.N., 188, (345;. Luizet. Nouvelle ^toile variable 9. 1911 Lacertae. A.N., 187, (191) ; Nou- veaux elements et courbe de lumiere de I'etoile variable RR Leonis. op. cit. 189, (355) ; Nouveaux elements de I'etoile variable Z Leonis. t.e. (357) ; Elements et courbe de lumiere de I'etoile variable RR Lion (B.D.-h24° Variable Stars- L^J'J 7600 2183). li.A., 28, (452); Sur la vari- al)ilit6 d'eclat de certaines ^toiles da type 8 Cephee. G.R., 152, f70)j Sur la forme ile la courbe de lumiere de I'etoile variable 5 Cepliee obteniie d'apres les observations d'Argelander. t.c. (HilO). Luther. tJber den Lichtwechsel von 9.190-i Orioiiis. A.N., 187,(191) ; Beob- achtiuigen des Veriinderliclien Z Ceti. op. e'lt. 188, (135). Massinger. Neuer Veriinderlicher 15. 1911 Virginis. A.N., 188, (117). Millosevicli. Nova Lacertae. A.N., 187, (L91). Mundler. Beobachtungen von Ver- iinderliclien. A.N. , 189, (33). 19820: Beobaelitungeu veriinderlicher Sterne im Jfdire 1909.' Mulder. 19821. Eine ueue Hypo- tliese iiber einzelnen Typen von verander- lichen Sternen. Myers. 19823. The variable star U Pegasi. [Abstract.] Nijland. Beobachtungen von SS Cygiii. (Forts, von A. N. 4404.) A.N., 187, (301) ; Beobachtungen von lang- ])L'rioilischeii Variablen. t.c. (401); 190, v433); Beobachtungen von XX Cygni. op. c'lt. 188, (149) ; Das Mira-Maximum von Juli 1910. t.c. (307); Per veriin- derliche Stern W Cygni. t.c. (309); Beobachtungen der Nova (137. 1910) und des Sterns 9. 1911 Lacertae. op. c'lt. 191, (25). 19857 : [Beobachtungen derj Nova Lacertae [angestellt in Utrecht niit dem Refraktor von 26 cm.] (Kolliindiscli.) 19858: [Beobachtungen von] R Coronae borealis [angestellt in Utrecht.] (Ilolliindisch.) Olivier. Maxima of Omicron Ceti. A.J., 27, (32). Parkliurst. 19905. Photometric and photographic observations of faint vari- able stars. [Abstract.] 19907: Photo- graphic light-curve of the variable star SU Cassiopeiae. [Abstract.] & Jordan. 19909. Photo- graphic color photometry of short period Variable stars. [Abstract.] 19910: Photographic photometry of rapidly changing variable stars. [Abstract.] Perrine. 19927. Discovery of motion in the faint nebula surrounding Nova Persei. [Abstract.] Pickering. Drei neue Veriinderliche in Harvard Map 22. [30. 1911 Ceti; 31. 1911 Pegasi; 32. 1911 Piscium.} A.N., 188, (389) ; 20 new variable stars in Harvard map, Nos. 2, 5, 32, 44 and 53. Harv.C, 152, (1) ; Stars having peculiar spectra. 38 new vai'iable stars. op. c'lt. 158, (I); 15 new variable stars in Harvard map, Nos. 7, 10, 16 and 19. op. c'lt. 159, (Ij ; 22 new variable stars in Harvard map. No. 52. op. c'lt. 162, (1) ; Nova Sagittarii, No. 4. Five new variable stars. op. c'lt. 164, (1); Three new variable stars in Harvard map, No. 22. op. eit. 165, (1) ; Co- operation in observing variable stars. op. c'lt. 166,(1). Plassmann. 19997. Beobachtung veriinderlicher Sterne auf See. 20000 : Der heutige Stand der Lehre vom Licht- wechsel der Fixsterne. Vortrag. Plate. 20002. Lichtwechsel des Veriinderlichen a Cassiopeiae. Plummer. Observations of a Orionis by the late Joseph Ba.Kendell, F.R.S., to- gether with the magnitudes deduced from the observations of Sir John Herschel and of Argelander. M.N., 71, (701j. PraSka. 20030. Lichtveriinderungen bei veriinderlichen Sternen. II. 2. (Czechisch.) 20032: u-Herculis. (Cze- ch isch.) Quignon. 20054. Sur I'etoile vari- able 0 (Mira) Ceti. Roberts. On the variation of S Arae. Ap.J., 33, (197); An inquiry into the variation of the spectroscopic liinary k Pavonis. op. cit. 34, (164) ; 20098 : On the period of the variable star S Arae. Roy, de. 20115a. Sur I'observation des etoiles variables. 20115e : Sur la variable B.D. T 81018., Harvard 004281 — Cephei. ScMesinger. 20163. On the charac- ter of the light variations of a Herculis. [Abstract.] SchwarzscMld. 20184. Lichtwechsel des Veriinderlichen 41.1910Tauri. A.N., 189, (345). Seares. 20191. Results of photo- metric investigations. [Abstract.] Shapley. Photometric measures of nova 137. 1910 Lacertae. A.N., 188, (73) 20221 : The antalgol variable ST Ophiuchi (52.1907). 20222: New ele- ments for RW Camelopardalis. Variable Stars. 220 7600 Stebbins. The measurement of the light of stars with a selenium photo- meter, with an application to the vari- ations of Algol. Ap.J., 32, (I85j ; On the radiation of tlie companion of Algol. op. cit. 33, (395; ; The discovery of eclipsing variable stars. op. cit. 34, (105j ; A new bright variable star, fi Aurigae. ^c. (112;. Stempell. 20265. Der Veriinderliche R. Lyia.-. Stroobajit. 20301. Notes sur le uombre probable d'etoiles du type d'Algol. Tikhoflf. £toile variable des Pleiades. C.Ti., 153, (653). Tucker. 20348. Meridian circle positions of Xova Persei. [Abstract.] Turner. Xeuer Veranderlicher 1. 1911 Draconis. A.N., 187, (63j. Very. 20366. The nebula about Xova Persei, 1901. [Abstract.] 20368 : An inquiry into the cause of the nebu- losity around Xova Persei. [Abstract.] Whiteside. 20395. The variable RS Per-sei. [Abstract.] WMttaker. On the law which goveru.s the variations of SS Cygni. Preliminary paper. M.X., 71, (686;. & Martin. On the variable EW Cassiopeiae. M.X., 71, (511;. [Wolf, Roy.] Xova Lacertae. A.X., 187,(111). Wood. 20456. Two new short-period variable stars. WorseU. 20469. Observations of southern variable stars. YendeU. Note on BD-r33° 4426, RA 22h 0°> 18s.5 ; Decl. 33° 56'.4 (1855). A.J., 26, (162) ; On a variable star in Scorpio, op. cit. (13) ; The Heis-Kriiger observations of variable stars. P. A., 18 (516;. Zinner. Algolsterne. A.X., 187, (177); Die V'erteilung der veriinder- lichen Sterne, op. cit. 190, C17;; Beob- achtiitigen von \'erander]ichen in den Jahren 1910 und 1911. t.e. (377). 7700 STAR CLUSTERS. Bailey. 18598. Vaiiable stars in clusters. [Abstract.] 18599: The rate of increase in brightness of three vari- able stars in the cluster Messier z. [Abstract.] 18601 : Some variable star problems. [Abstract.] 18602 : The number and distribution of stellar clusters and nebulae. [Abstract.] Barnard. 18631. Variable stars in clusters. [Abstract.] 18632 : Triangu- lation of star clusters. [Abstract.] 18635 : Difference of declination of Atlas and Pleione. [Abstract.] 18636: Micro- metrical measures of individual stars in the great globular clusters. [Abstract.] 18637 : On some of the variable stars in the cluster il5 Librae. [Abstract.] Fagerholm. 19138. Untersuchungen iiber den Sternhauien G. 0. 341. Fath. The distribution of nebulae and globular star clusters. P. A., 18, (544 j.' Henkel. 19372. Clusters and nebulas. Hinks. On the galactic distribution of gaseous nebulae and of star clusters. M.N., 71, (69S). Moulton. 19814. Some dynamical considerations of globular star clusters. [Ab.stract.] Nordlund. 19872. Photographische Ausmessung des Steruhaufens Messier 37. Plummer. On the problem of distri- bution in globular star clusters. M.N., 71, (460, with pi.). 7800 NEBULA. Die spiialige Archenhold. 18579. Struktur der Xebel. Bailey. 18602. The number and distribution of stellar clusters and nebuljK. [Abstract.] Barnard. 18621a. La nebulosite formant I'arriere plan de la constellation du Taureau. 18629 : Astronomical photography with small lenses. [Ab- stract.] 18634 : The annular nebula in Lyra. [Abstract.] 18638 : The nebu- lous regions of the Milky Way. [.\b- stract.] Bigourdan. Les nebuleuses dc la regi..,, des Pleiades. B.A., 28, ^417); [Presentation de la l'^ Partie du] Tome III de ses observations de Xebuleuses. C.R., 153, (857). Birkeland. Phenomenes celestes et analogies experimentales [reproduction electrique d'aspects analogues a ceux des anneaux de Saturne, de nebuleuses, des filaments noirs du Soleil] C'.R., 153, (938). stellar Spectroscopy. 221 8040 Brown. Tlie absorption of light in space. M.N., 72, (195). Espin. Note on the visual observa- tion of certain stellar gaseous nebulas. M.N. ,72, (150). Fath. The distribution of nebul«^ and globular star clusters. P. A., 18, (544j. Greenwicli Royal Observatory. Ob- serviitions of nebulte made at. M.N., 71, (509j. Henkel. 19372. Clusters and nebuke. Hinks. The galactic distriljution of spiral nebulaj : preliminary note. M.N., 71, (588, with pi.) ; On the galactic distribution of gaseous nebulce and of star clusters, t.c. (693). Innes. 19462. Observations of southern nebulee. Wood, Worsen. 19483. Ob- servations of southern nebulas. Ktihl. Are the white nebulas galaxies ? A.N., 190, (449). Larkiu. 19623. Der Zauber in der Perspektive des grossen Orionnebels. (Qbers.) Lorenz. 19682. Photographische Positionsbestimmnngen von 178 Nebel- flecken. Lynn. 19718. White nebulse. Pahlen. Clier die Gestalteu einiger Spiralnebel. A.N., 188, (249). Perrine. 19927. Discovery of motion in the faint nebula surrounding Nova Persei. [Abstract.] Porter. 20028. Micrometrical mea- sures of nebnlfe, 1905 to 1910. Ritchey. Methods and results in direct photography with the 60-inch reflecting telescope of the Mount Wilson solar observatory. A]d.J., 32, (26). Sutherland. Bode's law and spiral structure in nebulte. Ap.J., 34, (251). Turner & Brown. An examj^le of the use of spherical harmonic analysis. M.N., 72, (203). Very. Are the white nebulte galaxies ? A.N., 189, (441) ; 20366 : The nebula about Nova Persei, 1901. [Abstract.] 20368 : An inquiry into the cause of the nebulosity around Nova Persei. [Ab- stract.] Wirtz. 20420. Beobachtungen von Nebelfiecken am 49 cm-Refraktor. Tl 3 : 1902 April bis 1910 Miirz. 20421 : Generalliatalog der am grossen Re- fraktor in Strassburg beoliachteten Nebelflecke. 1881-1910. Vergleichung mit andern Nebelverzeiclmissen. Wolf. 20446. Konigsluhl-Nebel- Liste 12. Mittlere Orter, Beschreilning und llelligkeitsvergleichung von 279 Nebelfiecken bei X Ursae. Wood. 20454. Southern nebulai. 7900 MILlvY WAY. Barnard. 18629. Astronomical photo- gra|)hy with small lenses. [Abstract.] 18638 : The nebulous regions of the Milky Way. [Abstract.] BoMin. 18742. On the galactic sys- tem with regard to its structure, origin antl relations in space. Espin. 19126. The Milky Way. Sutton. 20312. The distance of various parts of the Milky Way. STELLAR SPECTROSCOPY (STARS, NEBULA, CLUSTERS). 8000 GENERAL. (BOOKS, TREATISES.) London Royal Astronomical Society, Council of. Stellar spectroscof)}' in 1911. M.N., 72, (327-336). Bosler. 18760. Les recents j)rogres des methodes astro-physiques aux Etats- Unis. 18761 : Recent progress in astro- physics in the United States. [Transl.] Hertzsprung. 19385. Verwendung photographlscher effektiver Wellenlan- geu zur Bestlmmuiig von Farbenaquiva- lenten. Stratton. On the Hartmaim-Cornu formula for the reduction of spectro- grams. M.N., 71, (663). 8010 STARS. Cannon. 18850. Variations of the bright hydrogen lines in stellar spectra. [Abstract.] 8040 Comparison of Wavelengths, intensity and width, in different stars. Albrecht. Note on the apparent wave- lengths of lines in the different spectral types and in certain variable stars. [Abstract.] stellar Spectroscopy. 222 8050 8050 IDENTIFICATION OF ELEMENTS. Archenhold. 18571. Neuere Unter- suchuii^'cii iiber den chemischen Ur- sprung veischiedeiier Liuien iin Sonnen- spektnim und in Sternspektren. [Re- ferat.] Btiry. Die starken Absorptionsbiinder in den Spektren der Planeten Jupiter, Saturn, (Jranus und Neptun. A.N., 190, (3). Lockyer. 19G74. On tlie iron flame spectrum and those of sun-spots and lower type stars. 8080 Physical Constitution (Pressure, Temperature). La temperature effective des etoiles. Gaz. astron., Bruxelles, 1909, [82). Abbot. On the temperatures of stars. Ap.J., 32, (319). Adams. Some results of a study of the spectra of Sirius, Procyon, and Arcturus with high disiDersiou. Ap.J., 33, fr,4,i. Wilsing. Remarks on Willing and Scheiner's memoir on the temperature of 109 stars. Ap.J., 32, (130). 8100 Classification. Albrecbt. On a quantitative method for determining the spectral types of the brighter stars. Ap.J., 33, (13Uj. 18530 : Relation between stellar spectral types and the intensities of certain lines in the spectra. [Abstract.] Bergstrand. 18606. Recherches sur les coiileurs des etoiles fixes. Cannon. Classification of 1688 southern stars by means of their sj^ectra. Harv.C, 56, (115). Fleming', .1/rs. W. P. 19160. Classifi- cation of the spectra of variahle stars of long period. [Abstract.] Ladenburg. 19603, Die Spektral- analyse und ihre kosmischen Konse- quenzen. Rede. Ludendorff. Bemerkungen iiber die Klas>ifizierungderIIelium-Sterne. A.N,, 190, aiJ.'l. Schlesinger. Correspondence con- cerning the ckissification of stellar ■spectra. Ap.J., 33, (260j. 8120 Study of special types of Spectra Fleming, Mrs. W. P. 19159. Stars of tlie lifth type in the Magellanic clouds. [Abstract.] Hale. 19313. On the spectra of stars of Secchi's fourth type. [Abstract.] 19317 : Comparison of stellar spectra of the third and fourth types. [Abstract.] Kapte3ni. On the average parallax of the stars of the fourth type as compared with that of stars of other types. Ap.J., 32, (91). Keeler. 19530. Spectra of stars of Secchi's third type. [Abstract.] 8140 Distribution of types of Spectra in the Heavens. Boss, B. Systematic pro2:ier-motions of stars of type B. A.J., 26, (163). Boss, L. Precession and solar motion . Thiid paper. Relation of systematic motions to spectral types. A.J., 26, (187). Hagstrom. 19312. Sur la distribu- tion des etoiles dans I'espace d'apres leurs spectres. Pickering. 19967. Recent researches of the Henry Draper memorial. [Ab- stract.] Russell. 20126. Detenninations of stellar parallax. , 8200 XEBUL.^ AND CLUSTERS. Bums. The spectrum of the Ring ne1)ula in Lyra. Lick B., 6, (92). Campbell. Note on radial velocities of nebulae. A.N., 188, (-345). Fabry & Buisson. Application of the interference method to the studv of nebula. Ap.J., 33, (406). Fatb. The spectra of spiral nebulae and globular star clusters. Second paper. Ap.J., 33, ^58;. Kemble & Underbill. 19532. The periodic law and the hydrogen spectrum. Nicbolson. The spectrum of nebu- lium. M.N., 72, (49) ; The constitution of the ring nebulae in Lyra. t.c. (176). 8220 Wave-lengths of lines for Nebulae- Wolf. 20442. Geschichtete Linien- emission im Ringnebel. 20444 : Die Spektra zweier planetarischer Nebel. stellar Spectroscopy. 223 8500 Wright. 20-172. A determination of the wave lengths of the brighter ueljuhir lines. [Abbtnict.] 8250 Identification of Elements. Wolf. 20144. Die Spektia zweier planctarisclier Nebel. 8270 Distribution of Energy in Spectrum. Wolf. 20442. Gesdiichtete Linien- eniission im Ringnebel. 20444 : Die Spektra zweier planetarischer Nebel. 8280 Physical Constitution. (^Pressure, Temperature.) Wolf. 20442. Geschichtete Liuien- emissiou iui Ringnebel. 8300 VARIABLE STARS, INCLUDING NEW STARS. Albrecht. Apparent wave-lengths of lines in the different spectral types and in certain variable stars. [Abstract.] neming, Mrs. W. P. 191G0. Classifi- cation of the spectra of variable stars of long period. [Abstract.] Frost. Observations of Nova Lacer- tae at the Yerkes observatory. Ap.J., 33, (410). Idrac. Premieres observations sur le spectre de la nouvelle etoile du Lezard. C.R., 152, (173). Merrill. Preliminary note on the .spectrum of P Cygni. LickB., 6, (156). Miincli. Das Spektrum der Nova Lacertae. A.N. , 188, (17). Nyland. 19855. Le spectre des etoiles variables du type Algol. Pickering. Stars having peculiar spectra. 38 new variable stars. Harv.C, 158, (1). Schlesinger. Rotation of stars aljout their axes. M.N. , 71, (719). Stebbins. The discovery of eclipsing variable stars. Ap.J., 34, (105). V/right. The spectrum of Nova Lacertae. LickB., 6, (95); further observations of ... . i.e. (100). 8320 Wavelengths of lines for variable stars. Newall. The visual spectrum of Nova Lacertae. A.N., 189, (359j. Wolf. Das Spektrum der Nova Lacertae. A.N., 187, (133). 8340 Comparison of Wave- lengths, intensity and width, in variable stars. Newall. The visual spectrum of Nova Lacertae. A.N., 189, (359). 8350 Identification of Elements. Wolf. Das Spektrum der Nova Lacertae. A.N., 187, (133). 8400 PECULIAR SPECTRA. Campbell. Note on the spectrum of 25 Orionis. LickB., 6, (153). Fleming. 19161. Some peculiar spectra. [Abstract.] Merrill. Preliminary note on the spectrum of P Cygni. LickB., 6, (156). Pickering. Stars having peculiar sjiectra. 38 new variable stars. Harv. C, 158, (1). Slipher. Peculiar star spectra sug- gestive of selective absorption of light in space. A.N., 189, (5). 8500 MOTION IN THE LINE OF SIGHT. Recherches sur les relations entre les spectres et les vitesses radiales des etoiles. [H.M.] Gaz. astron., Bruxelles. Campbell. Note on radial velocities of nebulae. A.N., 188, (345) ; On the motions of the brighter class B stars. LickB., 6, (101) ; Some peculiarities in the motions of the stars. t.c. (125); 18828: The spectrograjjhic de- termination of the motions of the stars in the line of sight. [Abstract.] 18834 : Report of progress on the radial velocity program of the Lick observatory. [Abstract.] Cotton. On Doppler's i^rinciple, in connection with the study of the radial velocities on the sun. Ap.J., 33, (375). Curtis. 18953. Three stars of great radial velocity. [Abstract.] Forbes. Rotation of stars about their axes. M.N., 71, (578). Frost. 19196. Observations of radial velocities. [Abstract.] Kapteyn & Frost. On the velocity of the sun's motion through space as stellar Spectroscopy. 224 8500 derived from the radial velocity of Orion stars. Ap.J., 32, (83j. Lee. The radial velocity of o Q-giii. Ap.J., 34, (303). Ludendorif. Bemerkungen iibei- die Klassifiziorung der Helium-Sterne. A.X., 190, (193). Pickermg. Determination of absolute wave-leugths with objective prisms. Hai-v.C, 154, (\). Plaskett. Probable errors of radial velocity determinations. Ap.J., 32, (230;; 19993: Effect of increasing the slit width on the accuracy of ladial velocity determinations. [Abstract.] Schlesinger. 20164. A proposed design for an objective prism spectro- graph for the determination of radial velocities. [Abstract.] Seeliger. Zusammenhang der I'a- rallaxen der Sterne mit ihreii Eigen- bewegungen iind (ieschwindigkeiten im Visionsradius. A.N., 190", (209). 8550 VARIABLE MOTION IN THE LINE OF SIGHT. Barrett. Variable radial velocities of two stars in the Taurus stream. Ap. J., 32, a8.3). Campbell. Note on the radial velocity of 7 Piscium. LickB., 6, (lo3j ; 18829*: Some i^eculiarities in the radial velocity of f Geminorum. [Abstract.] Curtis. 18952. Thirteen stars hav- ing variable radial velocities. [Abstract.] Frost. 19198. Spectrographic ob- servations. [Abstract.] Moore. Sixty-eight stars whose radial velocities vary. LickB., 6, (140j. Wright. Two stars with variable radial velocities. LickB., 6, (153). 8560 SPECTROSCOPIC OBSER- VATIONS OF VISUAL DOUBLE STARS. Campbell. The radial velocity of Polaris. A.S.P., 22, (35) ; Concerning the radial velocity of Procyon. t.e. (35-36). CurtiBS. 18961. A possible third body in the system of Algol. [Abstract.] 8600 SPECTHO.SCOPIC BINARY AND MULTIPLE SYSTEMS. Campbell. A study of spectroscopic binan,- stars. [-Abstract.] A.S.P., 22, (47) ; Errata in second catalogue of spectroscopic binary stars. LickB., 6, (154); 18831: Four new spectroscopic binaries. [Abstract.] 18842 : The variable velocity of Polaris in the line of sight. [Abstract.] 18843 : The spectro- scopic binaiy Capella. [Abstract.] Curtis. 18950. The quadruple system of Alpha Geminorum. [Abstract.] Frost. 19197. Spectroscopic obser- vations of stars. [Abstract.] & Adams. 19202. New spectroscopic binaries. [Abstract.] Hussey. 19445. The period of Delta Equulei. [Al)stract.] Lee. Measures on nineteen new spectroscopic binaries. Ap.J., 32, (300). Ludendorff. Uber den spectroskopi- schen Doppelstern o Persei. A.N., 188, (211); 19699: Verzeichnis der Bahnele- mente spektroskopischer Doppelsterne. Maury. 19747. The K lines in Beta Aurigae. [Abstract.] Moore. Sixtj^-eight stars whose radial velocities vary. LickB., 6, (140). Roberts. An inquiry into the varia- tion of the spectroscopic binary K Pavonis. Ap.J., 34, (164). 8620 ORBITS FROM SPECTRO- SCOPIC OBSERVATIONS. Adams. 18513. The orbit of the spectroscopic binary ij Orionis. [Ab- stract.] Laves. 196.38. The problem of three bodies from the standpoint of spectro- sco]jy. [Abstract.] Ludendorff. 19699. Verzeichnis der Bahiielemente spectroskopischer Dop- pelsterne. Merrill. Spectrographic orbit of )3 Capricorni. A.S.P., 22, (136). 8630 PARALLAX FROM SPEC- TROSCOPIC OBSERVATIONS. Campbell. Some peculiarities in the motions of the stars. LickB., 6, (125). ANCIENT ASTRONOMY AND ASTROLOGY. AXCIENT ASTROXOMY. 9000 GENERAL. Scboy. 20175. Die geschichtliche Entwicklung der Polhohenbestimmungen bei den alteren Vol kern. Chronology. 225 9020 FURTHER SUBDIVISIONS ACCORDING TO COUNTRIES AND EPOCHS. Bezold. 18700. Astrouomie, Hiiu- raelsscliau iiiul Astiallehre bei dea Babylonieni. Boutquin. 187G8. I/astroiiomie aiK'ioiinc dans ITiide. Fotheringham. A reply to Professor Giu/.el oil the calendar dates in the Elephantine papyri. M.N., 71, ((Kil). Ginzel. 19241. Die Moiidstationeu. Keller. 19531. Die Astrono.iiie der Pythagoreer. Ein Beitrag zur Geschichte der Astronomie. Kotz. 19567. Astronomisclie Ivennt- nisse der Naturvolker Australiens uiid der Siidsee. Diss. Kugler. 19600. Some new lights on Babylonian astronomy. (Critical re- marks and positive statements.) Maunder. 19742. Le zodiaque et les tribus d'Israel. Payn. 19914. The orientation of the great temple of Amen Ra at Karnak. Schoy. 20176. DieSonnenuhren der Araber in ihrer Bedeutung fiir die arabische Astrouomie and Religion. Voigt. 20373. Die Geschichte Jesu uud die A.strologie. Eine religionsge- schichtliche und chroiiologische Unter- suchung zu der Erzahluug von den Weisen ans dem Morgenlaude. Weidner. 20387. Babylonische Astronomie. 20388 : Die astronomisclie Grundlage des Venusjahres. Wiedemann. 20405. Die Gestalt, Lage und Bewegung der Erde sowie philosopliisch-astronomischeBetrachtun- gen von Qutb al Din al Schirazi. ASTROLOGY. 9050 GENERAL. Becker. 18668. Das Wesen der Astrologie. Hartmann. 19340. Esoterische Astro- logie. Die zwolf Zeichen des Zodiaks und deren Bedeutung. 9060 FURTHER SUBDIVISIONS ACCORDING TO COUNTRIES AND EPOCHS. Bezold. 18700. Astronomie, Him- luelsschau und Astrallehre bei den Babyloniern. (E-2987J 9300 Bezold u. BoU. 18701. Reflexe astrologischer Keiiinschriften bei grie- chischen Schriftstellern. Dyck. 19009. Zwei wiederaufge- fundene Prognostica von Johaiin Kepler auf die Jahre 1604 und 1624. Kotz. 19567. Astronomisclie Kennt- nisse der Naturvolker Australiens und der Siidsee. Diss. Rauscher. 20065. Der Halleysche Koinet ill! Jahre 1 531 und die Reforuia- toren. Voigt. 20373. Die Geschichte Jesu uud die Astrologie. Eine religionsge- schichtliclie und chronologische Unter- snchung zu der Erzahlung von den Weisen aus dein Morgenlande. Wiedemann. 20402. Uber einen astrologischen Traktat von al Kindi. ' CHRONOLOGY. ilEASURE OF TIME. 9200 GENERAL. Hammer. 19329. Wann steht die Sonne im Osten ? Weiler. 20389. Grundlagen fiir die Neugestaltuiig der astronomischen Zeitmessung. 9220 METHODS. Claude, Ferrie et Driencourt. Coui- paraisons radiotelegraphiques de chro- nonietres par la niethode des coincidences entre Paris et Bizerte. C.R., 152, (1152). Grosse. 19285. Schatteiikurveu fiir das mittlere Deutschland. Hoffmann. 19404. Die Zeitbestim- iming. Jegou. i9506. Hertzsche Signale zur Zeitbestimmung und zur Messung von geographischen Langenunterschie- den. Lakits. 19617. Zeitmessung und Zeitsignal. (Ungarisch.) Sclioy. 20176. Die Sonuenuhren der Araber in ihrer Bedeutung fiir die arabische Astronomie und Religion. Zeipel. 20491. Determination du temps au Spltzberg. REGULATION OF TIME. 9300 GENERAL. Bork. 18749. Das Veuusjahr. Q Chronology 22C, 9300 Neugebauer. 19826. Stern taf el nvou 4000 vor Clir. Ijis zur Gegenwart nobst Hilfsmitteli) zur Bereclinung von Stern- positionen zwischen 1000 vor Cbr. uml 3000 nach Ciir. zum Gebrauch fiir Historiker . . . bearb. 9320 LUNAR YEAR. Ginzel. rj241. Die Mondstationeu. 9390 SUBDIVISION OF DAY. J^gou. Rece])tion flu signal horaire hertzien de la Tour Eiffel. C.R., 151, (1042). 9400 TIME RECKONING. Ginzel. 19242. Handhuch der ma- tbemati.sclien und tecbnischen Clirono- logie, das ZeitreclinuDgsweseii der Yolker. Bd Il.Zeitreclinuiigder Juden, der Naturvolker, der Homer und Griechen, sowie Naclitrage zum 1 . Bande. 9410 LOCAL. UNIVERSAL, ZONE fOPTlClALj TIME. Bigourdan. ISTIH. L'heure nouvelle. Campos Rodrigues. 18840. Portu- guese btandard time. Philippot. 10940. L'heure officielle. 9420 CALENDARS — JULIAN, GHKGORIAN, CHURCH ALMA- NAC, JEWISH, MOHAMMEDAN, VARIOUS. La refornie du calendrier. Russie et Belgique, 1910, (302-304). Le calendrier. Globe illustre, Bru- xelles, 1908, f698-699). Le caleudrier modernise. Comui. indust., Gand, 1910, (329-330). Bach. Drei Osterformeln. A.N., 189, (73). Barton. 18050. Calendar reforui. Bottcher. 18740. Leiclit lesbarer Dauerkalender. Boll. 18747. Griechisclie Kalender. II. Der Kalender der Quimilier und die Ueberlieferung der Geoponica. Bork. 18749. Das Venusjahr. Busching. 1880-5. Die Kalender- refonii. Eiufiihrungeiner fest.stelieiifleii, von Jahr zu Jahr gieioiibleiljeudeu und nioglichst regelmassigen Jahreseintei- lung. Courtenay. 18910. Tiie moon's visibility and tba date of the Crucifixion. Flamacbe. 19150. Sur la reforme du calendrier. Haxtmann. Osterfonncl. A.N., 187, (129) ; Antwort auf Bachs Bemeikungeu. op. e'd. 190, i'81) ; Zweck einer Obter- formel. I.e. f451). Lehmann. 19047. Die veranderlichen Tafelu dt;s astronomisclien und chrono- logischen Teils des preussischeii Noimal- kalenders fiir 1912 . . . (Kalender- materialieu fiir 1912. H. 2.) [Populare Mitttelungen hierzu auch gesondert er- schienen.] ; . . . fiir 1913. Plaats. 19988. NeuekiirzereTafeln fiir die Berechnung des WocLentages fiir gegeljenes Datum. (Uollandiscli.j Ristenpaxt. Osterformel mit kleiiien Zahlen. A.N., 190, (211). Weidner. 20388. Die astronomisclie Grundlage des Venusjahres. Zilliken. 20495. Der Kcilner Fest- kalender. Seine Entwicklunguud seine Verwendung zu Urkundendatierungen. Ein Beilrag zur Heortologie und C^hrouo- logie des Mittelalters. ERRATU-M IN TENTH ANNUAL ISSUE, p. 131 iVo. 18008 18 a paper by Henricus Gerardus van d. Sande Backhuyzen. 227 LIST OF JOURNALS WITH ABBREVIATED TITLES. TJie numbers nt end of full Title are tJioite used in the. (leneral TAat of Journals. Allg. Verinessyaehr., Lh'beniverda. — Allgeinoine Vermessungs-Nacliricliteu, hrsg. V. R. Reiss. Liebenwerda. [3G H. jahrl.] — (ier. Ann. Uydrogr., Berlin. — Annalen der Hydrograpliie mid uiaritimeu Meteorologie, hrsg. V. d. deiitscheu Seewarte. Berlin, [mouatl.] Nel)st Belheften. 43 (ie'r. Ami. Natpliilos., Leipzig. — Annalen der Naturj^hilosophie, Leipzig. 1285 Gar. Am.'iterdam, Arch. V erzelieringsivet. — Archief voor de verzekeringswetenschap en aanverwante vakken uitgegeven door de Vereeniging van wiskundige adviseurs bij Nederlandsche Maatschappijen van levensverzekering, 's Gravenbage, 8vo. 61 Hoi. Amsterdam, N'leuw Arch. Wish. — Nieuw Archief voor Wiskunde, uitgegeven door het Wiskundig Geuootschap te Amsterdam, Amsterdam, Bvo. 2 Hoi. Amsterdam, Proe. Sci. K. Akad. Wet. — Proceedings of the Sections of Sciences, Koninklijke Akademie van Wetenschappen, Amsterdam. 8vo. 3 Hoi. Amsterdam, Versl. Wis. Nat. Afd. K. Akad. Wet. — Verslagen der Vergaderiugen van de VVisen Natuurkuudige Afdeeling der Koninklijke Akademie van Weten- schappen, Amsterdam. Bvo. 7 Hoi. Ann. inines Belg., Bruxelles. — Aunales des mines de Belgique. Bruxelles. [trimestr.] 3 Bel. Ann. Physik, Leipzig. — Annalen der Phvsik, hrsg. v. Drude. Leipzig, [monatl.] 44 Ger. Awi. trav. puhl., Bruxelles. — Annales des travanx publics de Belgique. Bruxelles. [bimestr.] 5 Bel. Arch. Anat. physiol., Leipzig. — Archiv fiir Anatomie und Physiologic, hrsg. v. His und Engelmann. Leipzig. 1. Anatomische Abtheilung u. d. T. : Archiv fiir Anatomic und Eutwicklungsgeschichte, hrsg. v. His. 2. Physiologische Ab- theilung u. d. T. : Archiv fiir Physiologic, hrsg. v. Engelmann. [jede Abth. 2 monatl.] 52 Ger. Arc.li. Gesch. Natio., Leipzig. — Archiv fiir die Geschichte der Naturwissenschaften und der Technik, hrsg. v. K. v. Buchka, H. Stadler, C. Schaefer, K. Sudhoff. Leipzig, [zwangl.] — Ger. Anh. Philos., Berlin. — Archiv fiir Philosophic. 1. Abth.: Archiv fiir Geschichte der Philosophie. 2. Abth. : Archiv fiir systematische Philosophie. Berlin. [8 H. jahrl.] 82 Ger. Arch. Sci. Phys., Geneve. — Archives des sciences physiques et naturelles. Geneve, Lausanne et Paris. 8vo. 10 Swi. Ark. Matem., Stockholm. — Arkiv for matematik, astronomi och fysik utgifvet af K. Svenska Vetenskapsakaderaien i Stockholm. 8vo. — Swe. Astr. J., Albany, N.Y. — The Astronomical Journal, Albany, N.Y. 28 U.S. Astr. Korr., Bamhurg. — Astronomische Korrespondenz. Illustr. ilonatschrift, hrsg. A. Stentzel. Hamburg. — Ger. (E-2987,) 2 Q 228 Astr. NacJir., Kiel. — Astronomische Nachrichten, brsg. v. Kreutz. Kiel, Hamlnirg. [72 Nni jiilirl.] 9i Ger. Aatrol. Rdscli., Leipzig. — Astrologische Rundschau. Organ der Deutsclien Astro- Ijgischeu Gesellschaft. Leipzig, [monatl.] — Ger. Astroph. J., Chicago, III. — Astrophysical Journal (University ot Chicago), Chicago, 111. 27 U.S. Aus. d. Natur, Leipzig. — Aus der Natur. Zeitschrift fiir alle Naturfreunde, Jirsg. V. \V. .Schoenichen. Leipzig. [J nionatl.] — Ger. Baltimore, Md., Johns Hopkins Univ. Cir. — Johns Hopkins University Circulars, Baltimore, Md. 36 U.S. Batavia, Nat. Tijdsehr. — Natuurkundig Tijdschrift voor Nederlandsch-Indie uitge- geven door de Koniaklijke uatuurkundige V^ereeniging, Batavia, 8vo. 11 Hoi. Beitr. Assyr., Leipzig. — Beitrage zur Assyriologie und seinitischen Sprachwissen- scliaft, hrsg. v. F. Delitzsch und P. Haupt. Leipzig, [zwangl.] — Ger. Beitr. Geophysik, Leipzig. — Beitrage zur Geophysik, hrsg. v. Gerland. Leipzig. [1-2 H. jahrl.] 129 Ger. Belg. Milit., Bruxelles. — La Belgique Militaire. Organe de la defense nationale. " Bruxelles. [hebdom.] — Bel. Belg. 7narit. et colon. — La Belgique maritime et coloniale. — Bel. Berkeley, Univ. Cal. Pub. astr. Lick Obs. Ball. — University of California Publica- tions, Astronomy, Lick Observatory Bulletin, Berkele}'. -11 U.S. Berkeley, Univ. Cal. Pub. Lick Obs. — Publications of the Lick Observatory, Univer- sity of California, Bei-keley. 44 U.S. Berlin, SitzBer. Ak. TT'iss. — Sitzungsberichte der kgl. pi'eussischen Akademie der Wissenschaften. Berlin, [woch.] 182 Ger. Berlin, Verh. D. physik. Ges. — Verhandlungen der deutschen physikalischen Gesell- schaft. Leipzig. [^ monatl.] 186 Ger. Bill, Meded. Verh. Ned. Meteor. 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NOT FOR CIRCULATION Z 7403 R882 Div.E 1911 Biological & Medical Reference International catalogue of scientific literature^ 1901-19H STORAGE