S ^ \ Vasts' MEMOIRS OF THE 6* • - ^ v ^ v LITERARY AND * * ' PHILOSOPHICAL SOCIETY OF MANCHESTER . VOL. I. I / SECOND EDITION. . .<* i LONDON: PRINTED FOR T. CADELL, IN THE STRAND. M DCC LXXXJX. / f I \ TO THE king, I * S ' THESE VOLUMES ARE HUMBLY INSCRIBED •S’* V BY THE MEMBERS OF THE LITERARY AND PHILOSOPHICAL SOCIETY OF MANCHESTER, WITH THE I PROFOUNDEST RESPECT AND LOYYLTYs AND WITH PECULIAR GRATITUDE fOR HIS GRACIOUS PATRONAGE OF THE FIRST FRUITS OF THEIR INSTITUTION. ' THE R E P A . C E. H.E numerous Societies, for the pro¬ motion of Literature and Philofoph)^ which have been formed in different parts of Europe, in the courfe of the laft and prefent centuries, have been not only the means of diffufing knowledge more extenfively, but have contributed to produce a greater number of important difcoveries, than have been effe&ed in any other equal lpace of time. The progrefs that has been made in Phyfics and the Belles Lettres, owes its rapidity, if not its origin, to the encouragement which thefe Societies have given to fuch puifuits, and to the emulation which has been excited between dif¬ ferent academical bodies, as well as among the individual Members of eacli inftitution. The colle&ing and publifhing the more important communications which have been delivered to A 3 them. VI PREFACE. them, have faved from oblivion many very valu¬ able difcoveries, or improvements in arts, and much ufeful information in the various branches of fcience. Thefe their modeft authors might have been tempted to fupprcfs, but for the re- fpedable fandion of focieties of men of the firft eminence and learning in their refpedive coun¬ tries, and the eafy mode of publilhing, which their volumes of Tranfadions afford. Though, in France, Societies for thefe pur- pofes have been inftituted in feveral of the pro¬ vinces, in England, they have almoft been con¬ fined to the Capital 3 and however great have been the advantages refulting from the refearches of the learned bodies, who are incorporated in London, it feems probable, that the great end of their inftitutions, the promotion of arts and fciences, may be more widely extended by the forming of Societies, with fimilar views, in the principal towns in this kingdom. Men, however great their learning, often be¬ come indolent, and unambitious to improve in knowledge, for want of affociating with others of fimilar talents and acquirements : Having few opportunities of communicating their ideas, they are not very folicitous to colled: or arrange thofe they have acquired, and are ft ill lefs anxious about the further cultivation of their minds. — But fcience, like fire, is put in motion bv collifton. — Where a number of fuch men have PREFACE. vii have frequent opportunities of meeting and con- verfing together, thought begets thought, and every hint is turned to advantage. A fpirit of inquiry glows in every bread. Every new dis¬ covery relative to the natural, intelle&ual or moral world, leads to a farther invedigation 5 and each man is zealous to didinguilh himfelf in the intereding purfuit. Such have been the confiderations that have led to the inditution of the Literary and Phi- lofophical Society of Mancheder. — Many years fince, a few Gentlemen, inhabitants of the town, who were infpired with a tade for Literature and Philofophy, formed themfelves into a kind of weekly club, for the purpofe of converfing on fubje&s of that nature. Thefe meetings were continued, with fome interruption, for feveral years ; and many refpedlable perfons being defirous of becoming Members, the num¬ bers were increafed fo far, as to induce the founders of the Society to think of extending their original defign. Prefidents, and other officers were elected, a code of laws formed, and a regular Society condituted, and deno¬ minated, THE LITERARY AND PHILOSOPHICAL SOCIETY OF MANCHESTER. This Society now prefents the fird fruits of its inditution to the public j and from the affiduity of the Members, and the correfpondence of others, there is reafon to prefume, that a A 4 volume P R E F A C £. viii volume may be regularly fent to the prefs, every fecond or third year. The feleflion of the papers has been made with as much impartiality, and as drift attention to their comparative merits, as could be expe&ed, in decifions of fo delicate a nature. Yet the committee are fenfible that a majority of- votes, delivered by ballot, is not an infallible ted of excellence, in literary or philofophical productions. This confideration^ they trud, will give them a reafonable claim to the candour of the reader, if there fhould be found occafion for its exercife : And they hope that Gentlemen, who have favoured the Society with valuable communications, will deem it no injudice or difparagement, that their Efiays have not been inferted, through the im¬ perfection of neceflary forms and regulations. They are preferved in the Archives of the Society, and may again come under review, when fub- jefts of a fimilar nature, to thofe on which they treat, are offered for difcudion. * No fydematic order has been obferved, in the difpofition of the mifcellaneous materials, which compofe thefe volumes j becaufe fuch an * Several Diflertations, by Dr. Percival, Mr. Henry, and others, enumerated in the printed Report of the Society, were publifhed by their refpedlive authors, long befoie thefe Memoirs were committed to the prefs. arrangement PREFACE. ix arrangement would have required the completion of the work, before any part of it could have been committed to the prefs. The fan&ion which the Society gives to the work, now published, under its aufpices, ex¬ tends only to the novelty, ingenuity, or im¬ portance of the feveral memoirs which it con¬ tains. Refponfibility concerning the truth of fafrs, the foundnefs of reafoning, or the accuracy of calculation, is wholly difclaimed ; and mult reft alone, on the knowledge, judgment, or ability of the authors, who have refpedtively furnifhed fuch communications. LAWS t \ t I LAWS AND REGULATIONS i FOR THE GOVERNMENT OF THE LITERARY AND PHILOSOPHICAL SOCIETY OF MANCHESTER^ 1 TOGETHER WITH A LIST OF THE MEMBERS. LAWS. I. Hp HAT the number of the Members of this Society, inverted with the privilege of voting, electing members, See. be Emitted to fifty. II. That Honorary Members, refiding at a diftance from Manchefier, be eligible into this Society, provided no Gentleman be recommended, who has not diftin- guiflied himfelf by his literary or philofophical publi¬ cations ; or favoured the Society with fome paper, which fhall have received the approbation of the Committee of Papers. III. That every Candidate for admiffion into the Society, whether as an Ordinary or Honorary Member, fhall be propofed by at leaf! three Ordinary Members, Who LAWS. xii who fhall fign a Certificate of his being, from their knowledge of him, or of his writings, a fit perfon to be admitted into it : which certificate 'fhall be read at four fucceffive meetings of the Society, previoufly to the elec¬ tion — Such election, with refpe£t to an Ordinary Mem¬ ber, to be void, if he do not attend within four meetings afterwards, unlefs he can plead fome reafonable apology. IV". That every election fhall be conduced by ballot ; That the majority of votes fhall decide ; thirteen Mem¬ bers at leaft being prefent ; and that the Prefident fhall have a cafting voice, if the number of votes be equal. V. That two Prefidents, four Vice-Prefidents, two Secretaries, a Treafurer, and a Librarian, be eledled annually, by the majority of members prefent, on the laft Wednefday in the month of April : The election to be determined by ballot. VI. That a Committee of Papers fhall be appointed, by ballot, at the fame time, which fhall confift of the Prefidents, Vice-Prefidents, Secretaries, Treafurer and Librarian, together with fix other members of the Society : And that this Committee fhall decide, by ballot, concerning the infertion in the Regifter, or the publication, of any paper which fhall have been read before the Society ; and fhall be authorized to feledl, with the confent of the author, detached parts of any paper, the whole of which may not be deemed proper either for infertion or publication : But that the prefence of feven members of the Committee fnall be neceflary for fuch difcuffion, or decifion. VII. That Vifitors may be introduced by any Mem¬ ber to the meetings of the Society, with the permiflion of the Chairman. VIII. That the fubjects of converfation comprehend Natural Philofophy, Theoretical and Experimental Che- miftry, Polite Literature, Civil Law, General Politics, Commerce, X1U L A'W S. Commerce, and the Arts. But that Religion, the Pradtical Branches of Phyfic, and Britifh Politics, be deemed prohibited ; and that the Chairman fhall deliver his Veto, whenever they are introduced. IX- That each Member, wlTo (hall favour the Society with any intending fads and obfervations, refpeding Philof. phy, Polite Literature, &c. which may occur to him, either from refleftion, experiment, reading, or corrcfpoiidence, fhall fend his paper to one of the Secretaries, the Monday before the meeting of the Society. X. That the Secretary, to whom the paper fhall be delivered, fhall, with the approbation of one Prefident, or two Vice-Prefidcnts, have the power of fufpending the recital of it, if deemed improper to be read, until the pleafure of the Committee of Papers be known, a meeting of which fhall be called by the Secretary to infpeait: And, if the Committee difapprove of its being introduced to the Society, they fhall be empower¬ ed to reject it. XL That all papers which fhall be delivered to the Secretary, and not prohibited as above, fhall be read by him, or the author, according to the order of fuc- ceffion in which they were prefented. XII. That each paper fhall be read to the Society without interruption; and that more than thirty minutes fhall not be allowed to the reading of any Angle paper : ]f more time be required in the delivery of it, the remainder fhall, except the Society determine otherwife, be deferred to the fucceeding evening. No paper, however, fhall engage more than two evenings, with¬ out the confent of the Society expreffed by a ballot. XIII. That a fecond paper fhall not be read, before the fubjed of the former one has been difeuffed. 5UV REGULATIONS. XIV. That the Society fhall meet every Wednefday evening, except during the Months of June, July, Auguft, and September: And that each meeting {hall commence at half paft fix, and be concluded at half paft eight o’clock. XV. That each Member fhall pay one guinea an¬ nually, at half yearly payments, into the hands of the Treafurer, to defray the rent of the room, and other incidental expences ; and alfo, to eftablifh a fund for the benefit of the Society. And if any Member fhall refufe or negledl to pay his fubfcription, he fhall be excluded the Society. Each Member, on his elec¬ tion, to pay his fubfcription for the current half year, together with one guinea, admiffion fee. XVI. That it be recommended to each Member to enter the Society’s room with filence, and without ceremony. XVII. That no Laws fhall be ena&ed, refcinded, or altered, but at the quarterly meetings, on the laft Wednefdays in the Months of January, April, and October : And that notice fhall be given, at leaf! four¬ teen days, previous to thofe meetings. REGULATIONS. I. THAT the Society fhall publifh a volume of mifcellaneous papers, every two years. And that, at ftated times, the Committee fhall feledt from the papers, which fhall have been read to the Society, fuch as fhall appear to be mod worthy of publication : But that no papers fhall be publifhed, again!! the con- fent of the authars. II. That REGULATIONS. xv II. That a Library be formed for the ufe of the Mem¬ bers of this Society ; and that the Librarian be autho¬ rized to purchafe fuch books, as fhall be ordered at the quarterly meetings of the Society : But that no books (hall be taken out of the Library, without a written order from one of the Secretaries, limiting the time of keeping it to feven days. III. That the refolution to eflabl ifh a Library be announced to the Honorary Members of the Society; and that it be intimated to them by the Secretaries, that donations of their paft and future publications will be highly acceptable. IV. That a gold medal, of the value of feven guineas, be given to the Author of the beft Experimental Paper on any fubjeCt relative to Arts and Manufactures, which fhall have been delivered to the Secretaries, and read at the ordinary meetings of the Society before the laft Wednefday in March 1786. V. That the adjudication of this premium be referred to the Committee of Papers; that their decifion fhall be made by ballot ; and that the medal fhall be deliver¬ ed by the Prefident, to the perfon to whom it fhall have been adjudged, or to his reprefentative, at thefirft meet¬ ing of the Society in OClober 1786. VI. That if the perfon, to whom the medal fhall have been adjudged, be not one of the Society, his name fhall be enrolled in the lift of Honorary Members. VII. The regular attendance of members being eflen- tial to the profperity and ufefulnefs of the Inftitution, that if any Member fhall abfent himfelf during the fpace of three months, from the meetings of the Society, notice fhall be fent to him, at a quarterly meeting, that the Society confiders his abfence as a mark of difrefped, and xvi A LIST OF THE MEMBERS. and that a more punctual obfervance of the Laws is expected from him. V HI. To encourage the exertions of young men, who attend the meetings of the Society, as vifitors, that a Fiver medal, not exceeding the value of two guineas, be annually given to any one of them, under the age of twenty-one years, who fhall, within the year, have fur- nifhed the Society with the bell paper on any fubjedi of Literature or Philofophy ; and that fuch adjudication fhall be made by the Committee of Papers, A LIST OF THE MEMBERS. * James Mafley, Efq. ^ * Thomas Percival, M. D. F. R. S. & > Prefidents* S. A. & R^g- Soc. Med. Par. Soc. 3 * The Rev. Samuel Hall, A.M. ■* Charles White, Efq. F.R.S. Hono¬ rary Mem. R. M. S. & Cor. Mem. R. S. A. in Scotland, &c. * George Lloyd, Efq. * Mr. George Bew, * The Rev. Thomas Barnes, D. D. * Mr. Thomas Henry, F. R. S. Mr. lfaac MolTe, Mr. Thomas Robinfon, Mr- Jofeph Atkinfon, Mr, John Barrow. Y Vice-Prefidents. | Secretaries. Treafurer. Librarian. • Thomas A LIST OF THE MEMBERS, xvii Thomas Butterworth Bayley, Efq. F; R. S. * Mr. John Bill. Mr. John Birch. Mr. Charles Frederick Brandt' Mr. Alhworth Clegg. Mr. Robert Darbey. Mr. James Dinwiddie. Mr. John Drinkwater. * Mr. George Duckworth^ Alexander Eafon, M. D. Mr. Edward Hall. Mr. Richard Hall. * The Rev. Ralph Harrifon. Mr. Samuel Hibbert. * Mr. Thomas Kerfhaw. Mr. John Lawrence. Mr. James Macaulay. Peter Mainwaring, M. D, John Mitchell, M. D. Mr. John Orme. Mr. George Philips. Mr. John Philips. Mr. Robert Philips; * Mr John Leigh Philips. Mr. Thomas Philips. * Mr. James Potter. Mr. John Powel. The Rev. Frederick Robert Slater.’ Mr. George Wakefield. Mr. George Walker. Mr. John Wilfon. Ttaje worked tin • art of the Committee of Paferu *> HONORARY i xv’rii A LIST OF THE MEMBERS. HONORARY MEMBERS. John Aikin, M. D. Felix Vicq d’Azyr, R. S. Med. Par. Sec. & R. A. Sc- Soc. &c. Sir George Baker, Bart. F. R. S. Medic. Regin. James Beattie, L L- D. Patrick Brydone, Efq. F. R. S. Mr. John Buchanan. The Right Rev. Beilby, Lord Bifliop.of Cheftcr. Edwood Chorley, M. D. Mr. Thomas Cooper. James Currie, M.D. Erafmus Darwin, M. D. F. R. S. Edward Hufley Delava!, Efq. F. R. S. Reg. S. S. Got- ting. & Upfal, & Inftit. Bologn. Soc. The Hon. Sir John Talbot Dillon, Knight and Baron of the Holy Roman Empire. Rev. William Enfield, L L. D. William Falconer, M.D. F. R.S. Anthony Fothergill,. M.D. F. R.S. Benjamin Franklin, L L. D. R. S. L. & R. Acad. Scicnt. Par. Soc. &c. The Rev. — — < Froflard, D. D. of Lyons, in France. William Hawes, M.D. John Haygarth, M. B. F. R. S. Mr. George Hibbert. Thomas Houlfton, M. D. Alexander Hunter, M. D. F. R. S. James Johnftone, M. D. Monfieur Lavoifier, Reg. Ac. Scient. P. Soc. The A LIST OF THE MEMBERS, xix TheRightRev. Richard, Lord BilhopofLandaff, F.R.S. John Coakley Lettfom, M. D. F. R. S. 8c S. A. Air. J. Hyacinth Magellan, F. R. S. 8c R. Acad. Petrop, 8c Paris. Correfp. Mr. Patrick Mac Morlahd. Henry Moyes, Al. D. The Rev. John Pope. The Rev. Jofeph Prieftley, LL..D. F.R.S. Acad. Imp. Petrop, R. Holm. 8c Med. 8c Reg. Acad. Scienc. P. Soc. Mr. William Rathbone. Mr. William Rofcoe, Liverpool. Benjamin Rulb, M. D. ProfelTor of Chemiftry at Philadelphia. Doming Ralbotham, Elq. Samuel Foart Simmons, M. D. F. R. S. & R. S. Al. P. Soc. 8c R. S. Monfpel. Correfp. The Rev. William Turner. The Rev. George Travis, A. Al. Air. Alexander Volta, ProfelTor of Experimental Philo- fophy at Como, 8tc. Martin Wall, M. D. Clinical ProfelTor in the Univerfity of Oxford. Mr. John Warltire. . Tj The Rev. Gilbert Wakefield, B. D. Jofiah Wedgwood, Efq. F. R. S. The Rev. John Whittaker, B. D. F. S. A. b 2 CONTENTS X, i • •!.> . *■ » v ; i : 1 • : . ..j , CONTENTS OF THE • * - > * • » FIRST VOLUME, £OME Remarks on the Opinion that the Animal Body poffeffes the Power of genera¬ ting Cold. Ay George Bell, M.D. Page i. On the Advantages of Literature and Philoso¬ phy in general and efpecially on /^Consistency of Literary and Philosophical, with Com¬ mercial, Pursuits. By Thomas Henry, F.R.S. - - P. 7- On Crystallization. Ay Alexander Eason, M. D. - - P. 29. On the Preservation of Sea Water/™#/ Putre- paction by Means with Commerce. j * sJ arrangement of time. Want of oeconomy in this point is equally, if not more injurious, than in pecuniary matters. It will be alfo allowed, that the profeflion, in which each individual is engaged, Ihould, next to the more important interefts of religion, at¬ tract and employ his principal attention. But the mind of man, and efpecially of young men, muft be provided with amufements. The young trades¬ man of fortune has generally many hours of lei- fure, and if amufements be neceflary to footh the rugged paths of bufinefs, (hall we choofe thofe which lead to difiipation, to extravagance, to vice, or fuch as tend to civilize the mind and improve the underftanding, by developing the operations of nature, explaining the nice connexion which fubfifts between the lowed: and higher order of beings. To man’s imperial race. From the green myriads in the peopled grafs ; and tracing the hand of Omnipotence through every link of that Vaft chain of being, which from God began. Nature’s etherial, human, angel, man, Bead, bird, fifti, infedl, what no eye can fee. No glafs can reach. * Will not the time he can Spare from bufinefs be more ufcfully employed in the ftudy of hiftory, * Pope’s Effay on Man, Ep. I. and 14 Mr. Henry on the Couftjlency of and the reading of our bed: authors ; or at an air pump, an electrical machine, or a microfcope, than, as is too often the cafe with thofe youths who have not received that culture which their fortunes entitled them to, at the tavern, the gam¬ ing table, or the brothel ; or, if their minds be not fufficiently aCtive, and paffions ltrong, to im¬ pel them to thefe exceffes, in idlenefs, low com¬ pany, and mean and degrading purfuits ? “ There are indeed, but very few,” fays an excellent ob- ferver of human nature, I73>°°° >n feven minutes and a half, we are impreffed with the mod profound veneration for that Almighty Being, who has fo wifely ad- jufted the proportions between the bulk and velocity of thefe rays, as to make them anfwer all his benevolent intentions to mankind whereas, an increafe or decreafe in the one or the other, might have been fatal to the animal and vegeta¬ ble world. By the Telefcope and Microfcope our eye is enabled to reach far beyond the limits of our natural vifion. By the former, objedls, at con- fiderable diftances, are brought, as it were, within our grafp, and we can loar upwards into other worlds. By the latter, we are impowered to fearch into the minutiae of nature, to admire the delicacy of her operations, and the wonders of creation/exhibited in the perfed fabrics of the fmallert animals and plants. The acquifition of knowledge in the fciences which we have already recommended, may per- ' haps be confidered rather as amufing and orna- mental. Literature, &c. with Commerce. 23 mental, than neceffary. But there are other branches of natural philofophy which may be deemed highly ufeful and important to commer¬ cial men. Thefe are Geography, Mechanics, and Chemiftry. Geography is fo clofely connected with com¬ merce, that it would be almoft as great a reflec¬ tion on the merchant to be ignorant of it, as of the rules of Arithmetic. Shall the man, whofe vefiels traverfe every quarter of the globe, be unacquainted with its form, its motion, its di- vifions, its kingdoms, feas, rivers, lakes, iflands and mountains ? Shall he be uninformed of the nations and people with whom he traffics, their perfons, manners, cuftoms, governments and religion ? Are not the flux and reflux of the tides, the fituation and courfe of currents in particular feas, and the direction of thofe winds, which prevail in certain feafons and latitudes, pheno¬ mena, into the nature and caufes of which he is interefted to inquire ? And, above all, fhould he not endeavour to know the produce of every country, and the articles, which, not being fup- plied in their own climate, may be mod accept¬ able objects of commerce to the inhabitants? * The remaining branches come more immedi¬ ately within the province of the manufafturer. Manufactures bear fo intimate a relation to the Mechanical Powers, as to be incapable of fub- iifling, in any degree of vigour, without their C 4 fupport. 24 Mr Henry cn the Confiftency of fupport. How tedious, how expenfive, and how imperfect would many operations be found, if performed by the mere efforts of human drength, or manual fkill, unaffided by mechanical aid ! The mechanic powers facilitate their perform¬ ance, and render their products more complete. How much do we owe to them for the improve¬ ment and extenfion of the manufactures of this town ! I am addreffing a fociety, all of whom are daily eye-witneffes of the beneficial confe- quences which have arifen from thefe improve¬ ments ; Jome of whom are reaping the fruits of them. It would be fuperfluous, it would be impertinent to enlarge on the fubjeCt: for it mud be evident, that as Mechanics are fo effen- tially neceffary to manufactures, a knowledge of their principles muft be ufeful to every man engaged in fuch branches of trade. With Mechanics, Hydrodatics and Hydraulics are fo clofely connected, that a knowledge of them may be confidered as a neceffary adjunCt. Tor, on the principles of thefe fciences often depends the fird movement of the mod complete machines j and fire and water engines, mills, aqueduCts, pumps, and other mechanical druc- tures, can only be brought into aCtion by their abidance. Nor is the utility of Chemidry more confined, or lefs connected with manufactures, than Me¬ chanics, Literature , &£. with Commerce. 2$ chanics. Indeed Chemiftry may be, not impro¬ perly, called the corner ftone of the arts. They not only are fupported by her, but many of them derive their very exiftence from this fource. She even furnilhes inftruments to every one of the branches of natural philofophy we have enumerated. The truth of this propofition will be evinced, when it is confidered that metals cannot be feparated from their ores, nor glafs produced without her aid. She fupplies the aftronomer with his lenfes, and the mathema¬ tician with his inftruments. The air pump, eleftrical, hydroftatical and hydraulic machines cannot be conftru&ed without her intervention; and fcarcely a piece of mechanifm is formed, to which fhe does not contribute fomething. In the finer arts the influence of Chemiftry is very confpicuous. To her the painter owes molt of thofe colours, by which he is enabled to give the refemblances of diftinguilhed perfonages to the inquiring eye of a grateful pofterity ; to place before their view, more clearly than words can exprefs, the martial deeds of the hero, and the firm virtue of the patriot ; and to reprefent thofe beauteous fcenes of nature, to the defcrip- tion of which, language is inadequate. Without Chemiftry, the fine colouring of a Titian could never have delighted the enraptured beholder. Nay, even the works of the philofopher, the hiftofiarj l6 Mr. Henry on the Confijlency of hiftorian and the poet, are indebted to her for their diffufion and permanency. To fhew the advantages arifing from this fcience in all the arts through which they might be traced, would carry me far beyond the limits of my prefent defign. It may be fufficient to point out the connexion which fubfifts between Chemiftry, and thofe manufactures which are the pride and glory of this refpeCtable commer¬ cial town. Bleaching is a chemical operation. The end of it is to abftraCt the oily and phlogiftic parts from the yarn or cloth, whereby it is rendered more fit for acquiring a greater degree of white- nefs, and abforbingthe particles of any colouring materials to which it may be expofed. The materials for this procefs are alfo the creatures of Chemiftry, and fome degree of che¬ mical knowledge is requifite to enable the oper¬ ator to judge of their goodnefs. Quick-lime is prepared by a chemical procefs. Pot-afh is a produCt of the fame art; to which alfo vitriolic, and all the acids owe their exiftence. The manufacture of foap is alfo a branch of this fcience. All the operations of the whitfter ; the fteeping, wafhing and boiling in alkaline iixiviums ; expofing to the fun’s light, fcouring, rubbing and blueing are chemical operations, or founded on chemical principles. The fame may be 27 Literature , &c. with Commerce. be faid of the arts of dying and printing, by which thofe beautiful colours are impreffed on cloths, which have contributed fo largely to the extenfion of the manufactures of this place. How few of the workmen, employed in them, poflfefs the lead knowledge of the fcience to which their profeffion owes its origin and fupport ! If random chance has Humbled on fo many im¬ provements, what might induhry and experience have effected, when guided by elementary know¬ ledge ? The misfortune is, that few dyers are chemifts, and few chemifls dyers. Practical knowledge fhould be united to theory, in order to produce the moll: beneficial difcoveries. The chemift is often prevented from availing himfelf of the refill t of hjs experiments, by the want of opportunities of repeating them at large : and the workman generally looks down with con¬ tempt on any propofals, the fubjeCt of which is new to him. Yet under all thefe difadvantages, I believe it will be confefled, that the arts of dying and printing owe much of their recent progrefs to the improvements of men who have made Chemiftry their ftudy. Much however re¬ mains to be done j and perhaps in no refpeCt are the manufactures of this country more defective than in the permanency of their colours. Sen- fible as our manufacturers are of this defeCV, is it not firange, that fo few of them fhould attempt to acquire a knowledge of thofe principles which would 2 8 Mr. Henry on the Conftfiency of , &c. would moft probably fupply them with the means of improving and fixing their dyes ? This fubjeCt would afford matter for very ex- tenfive difquifition ; but I fear I have already trefpafled on the patience of the fociety. Suffer me, therefore, only to requeft your indulgence while I point out one other fource of improve¬ ment and pleafure, confident with the purfuits, and frequently advantageous, and even neceflary to the bufinefs of the tradefman. A tafte for the Polite Arts, efpecially thofe of drawing and defign, fhould appear a defirable acquifition to the manufacturer of the finer and more elegant wares. If not poflefled of this, he is always dependent on others for the patterns of his fabrics. Whereas, were he capable of inventing them himfelf, he would poflefs con- fiderable advantages over his lefs accomplifhed neighbours. His imagination would continu¬ ally fupply him with fomething new; and of what importance novelty is, in thefe times of fafhion and fancy, every day’s experience furnifhes convincing proofs. It is this fupereminent tafte that has diftinguilhed the productions of a Wedg¬ wood and a Bentley above all their competitors in the fame line of bufinefs. Such a tafte would doubtlefs be equally beneficial to the manu¬ facturer of the fine cotton and filk goods of Manchcfter ; and he would be enabled to equal in Dr. Eafon on Cryjlallization. 29 in elegance of pattern, as he excels in ftrength of fabric, the manufactures of our neighbouring and inimical rivals. On Crystallization. ^Alexander Eason, M. D. Read November 14, 1781. LTHOUGH Nature always a£ts by general A and not by partial laws, yet the particular mode of her operations is frequently removed beyond the limited powers of the human under- ftanding. The truth of this obfervation is ftrongly confirmed by all the phenomena in the cryftallization of falts and other fubftances, ■which, under proper circumftances, never fail to (hoot into mafles or cryftals, with more or lefs regularity, according to the manner in which the procefs may have been carried on. Molt bodies, during their pafTage from a fluid to a folid ftate, feem to difcover a tendency to form themfelves into regular mafles of a conftant or given form. This tendency is highly con- fpicuous in the various kinds of fahne fubftances, and perhaps is dependent on a law of nature which exerts itfelf, in a more general manner, than philofophers are apt to imagine. To me it feems highly probable, that the cryftallization of falts, the freezing of water. the Dr. Enfcn on Cry Jl alligation . the formation of precious ftones, bafaltes, Sec, are all the effects of the famecaufe; and if we conjedure that the fetting of metals is a fpecies of cryftallization, we fhall hot be wide of the truth. This much is certain, that all the femi- metals, when broken, difeover a laminated tex¬ ture, and in each particular metal thefe lamina are always of a given or conftant form. That we may, therefore, proceed with due per- fpicuity,'.it will be necefifary to take a nearer view of the fubjed, and to confider, fhortly, the phenomena*attending the cryftallization both of fimple and compound bodies. The cry ftalliza- tion of a fimple cryftallizable body may be affeded merely by removing the caufe of its fluidity, fince by this means, its component parts will have an opportunity of arranging themfelves into mafles more or lefs regular and tranfparenr, according to the nature of the body, and the law of its cryftallization. The leaft refledion will ferve to difeover, that bodies may be converted from a folid to a fluid Hate, in two different ways, viz. either in the way of folution, or fufion by heat. Of the fir ft, we have endlefs examples from the folution of falts in water, and other fluids ; and the fecond may be very well illuftrated by the procefs of making glafs. * * Jn the lx v i vol. of the Phil. Tranf. No. 34, Mr. Keir gives an account of glafs forming cryftals when it paffes from a fluid to a folid hate by flow degrees. In Dr. Eafon on Cryftallization. Sr In the firft of thefe cafes, the cryftallization is carried on by the feparation of the fluid which keeps the cryftallizable body in a ftate of locu¬ tion ; and in- the fecond, the fame effeCt is pro¬ duced by the cooling of the materials, or jhe extraction of their heat. If, for inftance, a fo- lution of the foftil fixed alkali in water be-firft evaporated to a pellicle, and afterwards oe luffered to cool gradually, without being dis¬ turbed, the fait will fhoot into beautifully trans¬ parent cryftals; and in like manner, if water be deprived, of that degree of heat which is requifite to preferve it in a fluid ftate, it will lhoot into radii or needle-iike cryftals, which, at their union, form conftant angles of 6 o degrees. If, however, the water in the firft cafe,' and the heat in the fecond, be feparatea with too much rapidity, the cryftals will be fmall, and more or lefs irregular, according to the celerity with which the procefs may have been conduced; The fame obfervations are equally applicable to all bodies of the cryftallizable kind. Although, in general, every cryftallizable fub- ftance difeovers a manifeft tendency to fhoot into mafles or cryftals of a peculiar form, yet we muft hereobferve, that the forms of thofe cryftals are liable to great variation from various cir- cumftances attending their formation. Gypfum, for example, is well known to be a vitriolic fait with a calcareous bafls, and yet the 2t Dr- Eafon on Cryjlallization . the fubftance is prefented to us by nature in five different fhapes, to each of which naturalifts have given different names ; firft, the Lapis Specularis. 2dly. Striated Gypfum. 3dly. Gyp- feous Alabafter. 4thly. Selenites, properly *fo called. 5 thly. A Gypfeous Spar, frequently found adhering to the Tides of veins in mountains, parti¬ cularly thofe inclofing the ores of metals. All thefe fubflances when chemically examined, ex¬ hibit precifely the fame phenomena, and are, in reality, nothing but different cryftallizations of the fame compound fait. * Befides the gypfums, there is another fubftance, which though claffed by naturalifts with earthy bodies, is neverthelefs a compound fait, and, like the gypfums, has a natural tendency to cryftallize or fhoot into maffes of regular forms. This fubftance ftrongly promotes the fufion of earthy fubflances, particularly thefe of the cal¬ careous and argillaceous kind, and on this account is generally denominated a fluor or flux, but, * La nature fournit beaucoup de matlere faline de meme efpece que celle dont nous parlons (viz. felenite) mais qui a differentes formes, & a laquelle les naturaliftes one donne differentes noms comme gypfe ou miroir d’Ane, pierre a platre, albatre, fpath gypfeux, See. mais tomes ces matieres font un feul & meme fel, & nous les confide- rerons comme telles. Chvmie Experimentale Sc Raifonee, par Mr. Baume, Tom. I. p. 154. in Dr. Eajon on Cryftallization . 33 in England, is better known by the name of Derbyfhire Spar. All the bodies belonging to this clafs have- lately been (hewn to confift of a calcareous earth, and an acid of a very peculiar nature, which has the property of corroding glafs, and of converting water into flint. Flint, there¬ fore, is probably not a Ample earth, as philofo- phers have generally fuppofed, but a compound fubltance, confiding of water, and this lately difcovered acid. The verifiable, or flinty earths, bear, never- thelefs, ftronger marks of a Ample fubftance, than any body hitherto known ; and we are now cer¬ tain, that it forms the bafis of rock cryftals, * and a part of the whole tribe of precious ftones4 except the diamond. All thefe (tones have evidently been formed by the cryftallization of the matters which enter into their compofition ; and all the phenomena relating to their figure. * II feroit d’ailleurs difficile de penetrer affiez profonde- ment dans le interieur du globe pour recueillei4 de la terre pri¬ mitive, & qui n’auroit eprouv6 aucune alteration. 11 paroit certain, que fi Ton pouvoit fe procurer de cette efpece de terre, & un degre de feu fuffifant pour la faire entrer Cn fufion, on la reduiroit en une maffie auffi belle que Ie beau cryftal de roche, & qu’on ne pourroit dillinguer l’un de l’autre. Chymie Experimentale & Raifonnee, par Mr. Baume, Tom. I. p. 104. VOL. I. D tranf- 34 X)r. Eajon on Cryfiallization. tranfparency, &c. bear a ftrong analogy to thofc of the faline cryftals already defcribed. Each faline fubftance, of which there is a great variety, fhoots, as already obferved, into cryftals of a figure and degree of tranfparency peculiar to itfelf : and the fame thing is true, in general, with regard to gems or precious ftones. Thus, the diamond is naturally of one form, the ruby of another, the fapphire of a third, &c. and each of them poflefles a degree of tranfparency different from all the reft. Among philofophers it has long been a queftion, from what ftate the precious ftones have cryftallized ? that is, whether their particles were originally fufpended in water, or reduced to a fluid ftate by the adtion of a very intenfe heat ? Each of thefe opinions has been efpoufed by men of the firft abilities and reputation, and feveral arguments have been urged on both fides of the queftion. From analogy, and feveral fadls, which will afterwards appear, there is room, I am per- fuaded, to conjecture, that all precious ftones, with many other mineral bodies, have been originally in a ftate of fufionj- by means of heat, from which they have been formed by the law of cryfiallization. Pure verifiable earth, indeed, cannot be brought into fufion by the heat of our furnaces > but black flint has been melted without addi¬ tion Dr. Eafon on Cryftallization. 35 tion by the concentrated rays of the fun ; and, perhaps, there are, or have been, degrees of heat in nature, fufficient to produce the fame effect. Is it not poffible, that thofe immenfe fires, which feem to be the caufe of earthquakes and burning mountains, are fufficiently ftrong to bring into fufion the pureft kind of verifiable earth ? Is it not probable, that from fufions thus effected the whole tribe of precious Hones have been formed by cryftallization ?* If this conjefture has any foundation in nature, it will enable us to account in a very fatisfadtory manner for all the peculiar properties obfervable in this clafs of bodies. If the melted matter, in which the vitrifiable earth is diffufed, be fuffici¬ ently fluid, and if the cryftallization be carried on with due regularity, the cryftals will be well formed, and will exclude from their compofition all heterogeneous matters. If, however, the melted matter be too tenacious, or, if the procefs be carried on with too much rapidity, the cryftals will be irregular, and involve in their compofition more or lefs heterogeneous matters, according to * The difficulty of accounting for the fufion of the earth, conftituting the precious Hones, is obviated by the experiments of the celebrated Bergman, whofe analylis of thefe fubflances had not been feen by the author, at the time of writing this paper. For, from thefe it appears, that the gems'contain not only vitrifiable, but argillaceous and calcareous earth. D a circum- 3 6 Dr. Eqfon on Cryjiallizatidn. cil'cum (lances, which need not be mentioned. * Thus, for inftance, an admixture of metals may give to the cryftal different colours, fuch as the ruby, the emerald, the topaz, or the amethyftjf ancl3 w^en the cryftal ls perfedly pure, it conftitutes the colourlefs rock cryftal. Is not this hypothefis ftrongly fupported by the diftipation of the colours of the precious Hones ? And is not the reftoration of thofe co¬ lours a ftriking proof, that this hypothefis is founded in nature ? Three principles, at leaft, feem to enter into the compofition of precious ftones, viz. vitrifiable earth, the metallic calces on which their colours depend, and the particular matter determining the figure into which they cryftallize ; the variety of which might be inftanced by feveral examples. The prefence of the principle juft mentioned is ftill further indicated by the different degree of hardnefs obfervable in precious ftones. The rock cryftal, although as colourlefs and tranfpa- rent as the pureft diamond, is, neverthelefs, the * When cryftals are found irregular and not pure, the vulgar expreflion is, that they are not ripe; but the truth is, they never could ripen, though left to the end of time, on account of fome heterogeneous matters having entered into their compofition. f Bergman has ftiewn that all thefe colours may be imparted to gems by iron only. fofteft ,37 Dr. Eqfcn on Cryjlallization. fbfteft of the whole clafs to which it belongs. * Had thefe fa<51s been fufficiently attended to, the component parts of precious ftones had probably- been better underftood, and the different figures of thefe fubftances might have been Ihewn to have proceeded from one conftant and permanent law of cryftallization. But, be this as it may, the principles already in our poffeflion are fufficient to fupport a rational theory, not only of the formation of pre¬ cious ftones, but alfo of thofe fubftances known by the name of pebbles. Many fubftances which, under proper circumftances, Ihoot into cryftals of the moft regular form, concrete into diforderly mafies, when the procefs is carried on with too much precipitation. Have we not reafon there¬ fore to conjecture, that pebbles, agates, and even common flint are the produfts of fome fuch irre¬ gular cryftallization ? This may be exemplified in the pebbles found among the rocks of Arthur’s feat near Edinburgh, which are a vitri- fiable matter, mixed with different heterogeneous fubftances, from which a variety of colours and irregular fhapes is produced -3 and the rocks, * The topaz feems to be an exa£l rock cryftal with a yellow colour, probably from the calx of fome metal ; it is a prifm of fix irregular fides. I have feen fome of them of 3 very large fize; many are found in the mountains of Scotland, and, fometimes, at the foot of mountains, buried jn the earth, having been wafhed down by the rains. P 3 where 3 8 Dr. Eajon on Cryjtallization. •where the pebbles are found, feem to have de¬ rived their origin from lava or volcanic matter.* That the effe&s of volcanos are more exten- five than philofophers, till of late, have been aware of, will, I am perfuaded, be readily ac¬ knowledged; and by the help of many obferva- tions lately made, we are enabled to account for various phenomena, which otherwife, mull have remained for ever unintelligible to the human fpecies. Of thefe, however, we (hall only take notice of thofe columnar pillars called Bafaltes, or Giant’s cauleways. If we carefully attend to all the phenomena, obfervable in thefe produc¬ tions of nature, we fliall find reafon to conclude, that they are nothing more than ciyftallizations of lava or matter, brought into a ftate of fufion by the heat of fubterraneous fires. If ever it could be faid, that nature feemed to imitate art, it is in the formation of the Giant’s caufeways in the north of Ireland, where every pillar appears to have been hewn by an artift, and placed fo clofe to each other, as fcarce to admit a pin betwixt them. Their general figures are pentagons, hexagons and heptagons. Pillars with more fides are to be met with ; their fides, how¬ ever, are by no means equal. Each pillar, accord¬ ing to its number of fides, muft be furrounded * Quere, what is the reafon why flint is generally found among chalk or calcareous earths ? Dr. Eqfon on Cryjlallization. 39 by a like number of pillars, which differ from each other both in fhape and in fize, as not any two of them have been found alike in every refpeCt. Thefe pillars are moreover divided into joints, at unequal diftances, which, by the afiift- ance of a crow of iron, may be forced afunderj and, what is very remarkable, a pillar, feparated at thofe joints, always (hews one end convex, and the other concave ; the convexity being fome- times turned from, and fometimes towards the horizon •, but, in any Angle pillar, the direClioc is always the fame. Have we not every reafon to conclude, that the ifland of Staffa, and the Giant’s caufeways have been productions of volcanic matter, made liquid by fome fubterraneous fire, and, as foon as it cooled by flow degrees, cryftallized into that form which they now exhibit ? Had the fepara- tion of thefe pillars been owing to accident, they would have appeared like cracks in the earth, formed during a very dry feafon, without order, beauty or regularity j whereas the reverfe is very confpicuous. By attending to the fails and obfervations already related, it will, I am perfuaded, appear, that the fetting of metals is, in reality, a fpecies of cryliallization. This idea is ftrongly con,, firmed, by the laminated' texture which all the femimetals difcover, when broken in any direc¬ tion. The needle-like cryftals, fp conspicuous E 4 it) 40 Dr. Eajon on Cryjlallization, in crude antimony, clearly fhew, that this fub* fiance, during its formation, has been a£led upon by fome caufe, either the fame, or feme other, very analogous to that, by which the precious (tones, bafaltes, &c. are made to cryftallize. * The fame thing is true with refped to bifmuth ; and even pure fdver, during its paflage from a fluid to a folid flate, difeovers a tendency to form on its furface a number of Arise, which no doubt proceed from a difpofition of the metal to cryflal- lize, or arrange its particles in a particular order. The expanflon of water, during its freezing, is now univerfally allowed to be occafioned by the cryflallization of its parts. And, to me, it feems probable, that the expanflon of bifmuth and iron, in fimilar circumflances, proceeds from the fame caufe. -j- Lead ore, when tolerably pure, is generally found in mafles of a cubic form ; though, fome- times, in fhape of prifms. Perhaps this variety is * I obferved at Warrington (where copper ore is fmelted) the drofs and flux which fwim on the top of the metal ip the furnace in a liquid flate, are call into moulds in ihape of a double cube; thefe mafles, when cold, very much refemble Java or volcanic matter, and, when broken, evidently Ihew a cryftalline appearance in many parts, efpecially about the corners. f Figures call from melted iron are always very /harp, becaufe that metal expands as it cools, by which means the whole dye or mould is completely filled. owing Mr. Henry cn the Prefervatkn, &c. 41 owing to the proportion of filver contained in the ores. Some writers affirm, that native gold has been found in a cryftallized ftate, and the form it aflumes is that of a prifm of eight fides. With thefe obfervations I ffiall conclude this paper, which has been extended to an unreafon- able length, for which, I hope, the importance of the fubjed will plead my excufe. On the Preservation of Sea Water from Putrefaction by Means of Quicklime. By Thomas Henry, F. R. S. to which is added , an Account of a newly invented Machine for impreg¬ nating Water or other Fluids with Fixed Air, &c. communicated to Mr. Henry by I. Haygarth, M. B. F. R. S. Read Novenu ber 21, 1781. IT has been frequently repnarked by chemical and philofophical writers, that a new experi¬ ment is feldom made in vain. Though the ope¬ rator may even fail of attaining the immediate obje.Ct of his purfuit, he may yet, fortuitoufly, acquire the knowledge of fome new fad, which may be productive of improvemant and advan¬ tage to fcience. About / 42 Mr. Henry on the Prejervaticn About the time I publifhed my method of pre- ferving water, at fea, from putrefaction, &c. * a Gentleman, who had obtained a quantity of lea water, for the purpofe of bathing a child, com* plained to me that it foon became putrid, and re- quefted that I would think of fome expedient to preferve it. The principal falts contained in fea water are, jft. common marine or culinary fait, compounded of foffil alkali and marine acid j adly. a fait formed by the union of the fame acid with magne- fian earth and laftly, afmall quantity of felenite. The quantity of faline matter contained in a pint of fea water, in the Britifh feas, is according to Neuman, about one ounce in each pint, j- When this water is (lowly evaporated, the common fait firft cryftallizes, and the marine magnefian fait js left in, what is called, the bittern, from which, * An account of a method of preferving water, at fea, from putrefaction, and of reltoring to the water its original purity and pleafantnefs, by a cheap and eafy procefs, &c. London, 1781. f In Sir Torbern Bergman’s analyfis of fea water taken up, in the beginning of June 1776, about the latitude of the’ Canaries, from the depth of fixty fathoms, the folicj contents of a pint of the water were Of common fait Salited magnefia Pypfum Total 33°t 5 3 Grs. 1 or9. by of Sea Water, fcff. 43 by a fubfequent procefs, the purging bitter fait, commonly named Epfom fait, is obtained. By this reparation, the fea or bay fait is rendered much better adapted for the prefervation of ani¬ mal fubftances, than the fait of the rocks and fprings in Chelhire and Worcefterlhire, where, frorrnvhat 1 apprehend, to be a miftaken notion, that this bittern does not exift in the brine, tne liquor is fo haftily evaporated, that the cryftals of common fait retain much of the magnefian fait among them. For the magnefian fait is highly feptic, and greatly impairs the properties of the other, * The two methods which occurred to me, as likely to anfwer the willies of my friend, were, ift. the addition of quicklime, and idly, that of common fait. To the trial of the former I was induced by its known antifeptic effeds on com¬ mon water ; and, it is afcertained, that a nnall portion of common fait promotes, whereas 4 larger retards, putrefaction. EXPERIMENT I. To one quart of fea water were added two fcruples of frelh quicklime * to another, half an * At fome of the works at Northwich, the evaporation is carried on, in fo gentle a manner, that large cubical cryftal, are formed ; and the fait thus prepared is faid to be equal in Jlrength to bay fait. ounce 44 A/r- Henry on the Preservation ounce of common culinary fait; and a third was kept as a ftandard, without any addition. The mouths of the bottles being loofely covered with paper, they were expofed to the action of the fun, in fome of the hotted; weather of the laft fummer. In about a week, the ftandard became very ofrenfive; and the water, with the additional quantity of fait, did not continue fweet many hours longer; whereas, that with lime, continued many months, without ever exhibiting the lead marks of putridity. ft feemed probable, that all, or fome, of three changes had been effected by this procefs. It was fufpefted, that quicklime might decompofe the marine fait, with alkaline bafis ; a power •which it has lately been fuppofed to poffefs, under certain circumftances : or that its antifep- tic powers might depend on the formation of a lime water •, by either of which, a material, and, perhaps, unfavourable, alteration might be pro¬ duced : or laftly, that the precipitation of the earthv bafis of the magnefian fait, by the quick¬ lime, might contribute to the prefervation of the fea water. EXPERIMENTS II. & III. On fubmitting the water to which the lime had been added, to the common trials for dete&ing a difengaged alkali, no figns of fuch a fait were dilcovered. And upon blowing into it a long continued of Sea Water, &c. 4* continued ftream of air from the lungs, no pre¬ cipitation nor cloudinefs enfued, as in the cafe of lime water. It remained to fee, whether the precipitation of the magnefian earth, from its acid, had been ef- fe&ed. Under fome circumftances, it has been proved, by the very ingenious- Dr. Black, that magnefia will precipitate calcareous earth from acids. As, for inftance, if mild magnefia be thrown into a folution of calcareous earth, in marine or nitrous acid, the calcareous earth will be precipitated; the fum of the attraflion between this earth and fixed air, and between the magnefia and the acid, being greater than thofe which fubfifted between the magnefia and the air, and between the calcareous earth and the acid. But, if cauftic calcareous earth be added to a folution of magnefia in thofe acids, its affinity to the acid is, in this ftate, increafed, no fixed air attradls it, and it precipitates the magnefia. EXPERIMENT IV. To fome of the fea water, which had been kept as a ftandard, fome lime water was added, and a turbidnefs immediately took place, fucceeded by a copious precipitation. This, at firft, con¬ vinced an ingenious Member of this Society, Dr. Eafon, who happened to be prefent, and my- felf, that we had difcovered the manner in which the 46 Mr. Henry on the Prejervation the lime adted, and the reafon why no lime water was produced. But, on adding lime water alfo to fome of the fea water which had been preferved by the lime, a cloudinefs and precipitation refembling the former took place, and ftaggered us in our theory j for we imagined, that the portion of quicklime had been fufficient to have precipitated the whole of the magnefia which the water might have contained, and we now fuf- pedted, that the folution of the lime, was, there¬ fore, probably prevented by the fea fait. Other avocations prevented my purfuing the inquiry at that time, but I have fince relumed it, and been able to elucidate the whole matter. EXPERIMENT V. Into a ftrong folution of the common Chefhire fait, fome lime water was poured. The mixture became turbid, and a white earth was feparated^ which did not fink to the bottom of the glafs, but was fufpended, partly, on the furface, and, partly, in the midft of the liquor. But from whence did this precipitate proceed ? Was it the lime thrown down by the fait ; or did the lime feparate fomething from the common fait? EXPERIMENT VI. To a portion of the fame folution, inftead of lime water, fome drops of a folution of fofiil alkali of Sea lVatery ifc, 47 alkali were added, and the fame appearances occurred. EXPERIMENT VII. Each of thefe precipitates were rapidly and wholly diffolved, the greateft part of the water being firft poured off, on the addition of a few drops of dilute vitriolic acid. A proof that the precipitated earth was magnefia. EXPERIMENT VIII. To determine whether the addition of a por¬ tion of bitter purging fait, to a folution of com¬ mon fair, would prevent the forming of lime water, with an equal quantity of lime to that which had preferved the fea water, I mixed twenty grains of quicklime, feven drachms of common fait, and one drachm of bitter purging fait with a pint of rain water j but no lime water was produced. Whereas, a lime water was formed, by an equal quantity of lime with a pint of rain water, and alfo with a folution of common fait, from which the earthy matter it contained had been previoufly precipitated by fofTil alkali, and the alkali neutralifed by marine acid. The next queftion that prefented itfelf to my investigation, w'as, whether the common Chefhire fait w'as fo impregnated with magnefian fait, as to prevent the forming lime water, with a like quantity of lime, when ufed in the proportion of an ounce of fait to a pint of water. E X P E- 48 Mr. Henry on the Prefers at ion EXPERIMENT IX. Thefe proportions of Chefhire fait, quicklime, and rain water, being mixed, and fuffered to ftand afufficient time, the filtered liquor exhibited no figns of being impregnated with unneutralifed lime: but, on adding a few drops of lixivium tartari, it inftantly became very turbid, and de^ pofited a fediment, which, inftead of difappearing on the addition of vitriolic acid, formed a fele- nite with it, and again fettled at the bottom of the glafs. EXPERIMENT X. Five grains of quicklime, being added to the mixture of the ninth experiment, and the liquor, after due time, being filtered, and fubje&ed to the ufual teft, exhibited evident marks of having become a lime water. I now began to fufpedt, that the portion of quicklime, added to the fea water, in the firft experiment, had not been fufficient to precipitate the whole of the magnefia from its acid, and having fome of the mixture of that experiment (till by me, I again turned my attention to it. EXPERIMENT XI. The remaining part of the fea water, to which the quicklime had been added, was about a pint and half. Lime water, being added to a fmall part cf Sea Water , &c. 49 part of it, the fame turbid appearance took place as formerly. EXPERIMENT XII. On the addition of another drachm of lime, the water, when filtered, no longer became turbid, on the mixture of lime water to it ; but it did not yet exhibit any figns of being itfelf a lime water. But, EXPERIMENT XIII. When I added another drachm of lime, a lirne water was formed. For the water now be¬ came very turbid, on blowing air into it from the lungs. Thefe experiments, therefore, not only prove that fea water may be preferved for the purpofes of bathing, by means of quicklime, without forming a lime water, but they point out the rationale of this phenomenon ; and alfo inftrudt os what portion of lime may be ufed, without a lime water being produced. It appears that quicklime, diflblved in water, precipitates the magnefian earth from the marine acid, with which it is united in the fea water, and, uniting with that acid, is retained in the water, under the form of a marine felenite. What the water lofes, therefore, of one fait, it gains of another. Ac the fame time, the magnefia, being precipitated by a caujiic cal¬ careous earth, falls in a ftate fimilar to that: Vol. I. E to £o Mr. Henry on the Vrefdrvatlon to which it is reduced by calcination, viz. void of fixed air. In this ftate, I have formerly proved, by a train of experiments, that it is ftrongly antifeptic. * Being infoluble, the water is preferved without forming any combination with it 5 and the only alteration that is made in the component parts of the lea water, is, that the earthy marine fait changes its bafis of magnefia for one that is calcareous. We alfo fee, that there are limits to the addition of quicklime, beyond which, we cannot proceed, without forming lime water. The quantity of two fcruples, to a quart of fea water, though not fufficient to decompofe the whole of the magnefian fait, was yet adequate to the prefervation of the water. One drachm more of quicklime feparated the whole of the magnefia, and, when a further addition was made, a lime water was immediately formed, f The properties of common fait, as an antifeptic, are greatly weakened by the portion of marine * From thefe experiments it appeared, that magnefia alba, while pofieifed of its fixed air, is highly feptic to animal fiefii, but antifeptic to bile ; whereas, when cal¬ cined, and deprived of its fixed air, it is ftrongly anti¬ feptic both to flefh and bile. See Henry’s Experiments and Obfervations, p. 58. & feq. F Thefe proportions may vary, according to the ftrength of the quicklime employed. , niagnefian of Sea Water , &c. 51 magnefian fait, mixed with it. It is probable, that the marine felenite may be lefs feptic, and lefs foluble in water, fo as to feparate, during the evaporation of the brine. If fo, the addition of quicklime may be ufeful, previous to that procefs at the fait works. But we are fo little acquainted with the properties of calcareous falts, that, at prefent, we cannot determine whac might be the effeds of fuch a practice. I propofe, however, at lome future opportunity, to try, whether the calcareous marine fait will thus fepa¬ rate; and whether it be, in itfelf, feptic, or antifeptic. Dr. Haygarth, of Chefter, who is not more diftinguifhed for his extenfive knowledge, than for his friendly and benevolent difpontion, has lately, in the moftobliging manner, communicated to me, a description of an apparatus, which he has invented to mix air with liquids. The Dottor apprehended, that this method might facilitate my defign of precipitating the lime from water, to which it might have been added on fhip board ; and, with his ufual candour, and generofity, delivered up his invention to my fervice. The plan is truly ingenious, but I fear, and all my friends, whom I have confulted, agree with me in the apprehenfion, that the machine would be much too complex to admit of being E 2 ufed 52 Mr. Henry on the Prejervatkn i ufed at fea. It is capable, however, of being applied to fo many ufeful purpofes, that, I trull, the Society will think the communication of this valuable improvement well worthy of their at¬ tention. Defcription of an Apparatus to mix Air with Liquids. In the figure, plate i. an effervefcing veflel is reprefented (at E) in which fixed air is detached from a mixture of calcareous earth, and vitriolic acid, conveyed through the tubes (T /) into the air veflel (A). The fixed air, being of greater fpecific gravity, will fall to the bottom, and expel the common air at the top through the orifice (at O). It may be known when the veflel is full of fixed air, by fuelling; or extinguifhing a candle at this orifice; or by .computing the quantity of vitriolic acid and calcareous earth that will generate a certain quantity of air. A pair of common bellows (at B) with a pipe, a few inches longer than ufual and bent, is placed with the vent fo as to receive the air pipe (P), and the bellows pipe at ( b ) is inferted into the top of the water veflel (W). The bellows being worked, the fixed air riles, from the bottom of the air veflel, through the pipe (P P) into the vacuum within the bellows, and is impelled, with force, through the bellows pipe ( b ) into the body of the water veflel, filled with lime water, or any other kind of liquid. The air, which is noc abforbed by the liquid, rifes to the furface in bubbles of Sea Water, tie, 53 bubbles occafioning confiderable agitation j and returns into the air vefTel through the com¬ munication (CC.) That portion of fixed air, which is incapable of abforption by lime water, &c. being fpecifically lighter than the reft, will efcape through the orifice (at O) as the fixed air is fupplied by the effervescing mixture, but the pure fixed air, thus returned into the air veflfel, is again inhaled by the bellows, and blown into the lime water. The air and water veflels, in the model I have had made, are of tin, con¬ taining about four gallons a-piece. The orifices (at T, t , B, b ,) are made air-tight, with per¬ forated corks. The tubes (P, p and t ) run down the fides of the air veflels. The tube (b ) which is a corftinuation of the bellows pipe, runs down the middle of the water veflel. This pipe might be immerfed twelve or thirteen inches into the body of the water, as I have found, that a pair of common bellows, will force air through water, to this depth, with moderate exertion. In my model, the bellows, contrary to my direction, are of a large fize, and there was diffi¬ culty in working them, as might be expected, when all the orifices are fhut. To obviate this inconvenience, I tied a bladder, full of fixed air, upon the orifice (at O) and opening into the air, veflel. By this device, the bellows work with as much eafe as in the open air ; and the bladder fills and empties exactly like the lungs in refpira- E 3 ti°n, 54 Dr. Barnes on Poetry. tion. The tube P, p fhould be of the fame dia¬ meter as the vent of the bellows, and the com¬ munication (CC) fhould not be of a lefs fize, otherwife the water will rife into the bellows when they are worked. After this defcription, it would be fuperfluous to explain, that, in this procefs, there would be no lofs of fixed air or of time ; or to obferve, that from the known attraction between fixed air and quicklime, afufficient quantity of lime water might be freed from lime in a fhort time, fo as to fupply a flip’s company with little trouble or expence. On the Nature and ejfential Characters cf Poetry, as diftinguijhed from Prose. By Thomas Barnes, D.D. Read December 5, 1781. TO fettle with precifion the limits which divide poetic from profaic compofition, may perhaps appear, at firft fight, to be neither very difficult, nor very interefting. As, however, one great objett of this fociety is, the enjoyment of free and friendly converfation upon fubjedts connected with fcience, it is probable, that topics, which are not in themfelves of the greatefl: importance, may fometimes open a wider field, than others of more intrinfic excellence. Where much Dr. Barnes on Poetry. 55 much may be faid in fupport of different hypo- thefes, we may hope for that collifion of friendly argument, which may ftrike out fome fparks, both of amufement and information. Thus, a comparatively trifling fubjeCt may eventually contribute to the nobleft ufes, to the exercife of the mental faculties, and to the diffufion of can¬ dour, and intelligence. Our time will not be quite mifpent, if we can only glean from the topic before us, a Angle hour’s agreeable and literary entertainment. tc Wherein confifts the ejfence of poetry,” is a queftion, which it will not be fo eafy to anfwer, as may at firft be imagined. Different authors have given very different definitions. Some have denominated it, “ The art of exprefling our thoughts by fiction.” Others have imagined its effence to lie, in the fil'd faint outline of which, they have, by flow degrees of patient labour, finifhed into form and beauty. Hence, almod all our late machines have been invented, in a part of the country, where the date of the Arts is not greatly improved, and where original genius is not minced down, to the Ihreds and atoms of a long- edablilhed, and widely- extended manufacture. It is acknowledged, that mere random genius has made adonifhing difcoveries ar,d improve¬ ments, without any aid, but that of native laga- city. But, on the other hand, how many minds, capable, with afiidance and encouragement, of producing the happied inventions, have, for want of them, pined in obfcurity, lod to the world, and incapable of any great atchievement ? And, we may afk, what might fuch genius have atchieved, if fodered by fcience, by liberality, and by honour!* What Brindley executed by * But knowledge to their eye, her ample page. Rich with the fpoils of time, did ne’er unroll; Chill penury rcprefled their noble rage, And froze the genial current of their foul. Full many a gem, of pureft ray ferene, The dark unfathomed caves of ocean bear; Full many a flower is born to blulh, unfeen. And walle its fweetnefs on the defart air. Gray’s Church Yard. G 2 the $4 Dr. Barnes on the Affinity the mere dint of natural parts, is no exception to the rule. How much more might even he have done, if aflifted by a more extenfive know¬ ledge, and a more liberal education ! What, if to genius and application had been added, a larger field of obfervation, a more general ac¬ quaintance with the mechanical powers, and with what thofe powers have already done, in the various branches of Manufactures, and of Arts ! How much further might he have ad¬ vanced ! That human ingenuity is not exhaufi:- ed ; that machines are not yet carried to their higheft improvement, and that they ought to be encouraged to their very utmoft exertions, none here will queftion. Let us now apply thefe obfervations. I have ventured to chalk out the outlines of a plan, the foie objeCt and principle of which is, the improvement of our Manufactures , by the im¬ provement of thofe Arts, on which they depend. Thofe arts are, chemistry and mechanism. In an excellent paper, read to this fociety forme time ago, it was lamented, ‘f that fo few of our dyers are chemifts, and of our chemifts dyers.” We may add. How few of our Mechanics under- ftand the principles of their own arts, and the difcoveries made in other collateral and kindred manufactures ? At this day, I am informed, not a fingle weaver in the Norwich trade under- ftands the ufe of a Fly-Shuttle. But 35 fubfifiing between the Arts. But to proceed to our Plan. The firft objecft of this fcheme is — To provide a public: repository among us for chemical and mechanic knowledge. “ In order to this, I could vvifh models to be procured, of all fuch machines, in the various arts, as feem to bear the moft diftant relation to our own manufactures. All the proceffes in thofe of Silk, of Woollen , of Linen , and of Cotton, Ihould be here delineated. Thefe would make the moft neceffary, and important parts of this collection. But to thefe might, with great advantage, be added, the aftonilhing effects of Mechanic Genius in other branches, which have not fo apparent an affinity with our own. “ In this repository, let there be, likewife, provided, an affortment of the feveral ingredients ufed in dying, printing, &c. for the purpofe of experiments. “ A superintendant will be neceffary, to arrange, and to apply this collection to its proper ufe. He ffiould be a man, well verfed in che¬ mical, and mechanic knowledge. And let his province be, at certain feafons, and under certain regulations, to give lectures, advice, and aj- fijlance, to thofe who wifh to obtain a better knowledge of thefe arts. . Atkin on preferring Health that this perfon was of an indolent difpofition, and could not conquer his averfion to drinking the reindeer’s blood. The three furvivors, after remaining fix years and three months on this defolate and folitary ifland, were happily refcued by a fhip driven cafually upon the coaft, and returned home in fafety. They were ftrong and healthy at their return, but by habit had con¬ tracted an inability of eating bread, or drinking fpirituous liquors. To the above relations, I fhall add the follow¬ ing fhort quotations relative to the fame fubjedt. In a note to the account of the four Ruffians, it is faid, “Counfellor Muller fays, the Ruffians about Archangel fhould be imitated; fome of whom every year winter in Nova Zembla without ever contratting the fcurvy. They follow the example of the Samoides, by frequently drinking the warm blood of reindeer juft killed. The hunting of thefe animals requires continual exercife. None ever keep their huts during the day, unlefs tHe ftormy weather, or too great quantity of fnow, hinders them from taking their ufual exercife.” In a manufcript French account of the iflands lying between Kamtfchatka and America, drawn up by that eminent naturalift and geographer, Mr. Pallas, I find it mentioned, thac “ the Ruffians, in their hunting voyages to thefe iflands, (an expedition generally lading three years) in order in high Northern Latitudes. 99 order to fave expence and room in purchafing and flowing vegetable provifion, compofe half their crews of natives of Kamtfchatka, becaufe thefe people are able to preferve themfelves from the fcurvy with animal food only , by abftaining from the vfe of fait.” Laftly, in the excellent oration of Linnaeus, On the advantages of travelling in one s own country , printed in the third volume of the Am*nitates Academic*, it is afferted, “ that the Laplanders live without corn and wine, without fait and every kind of artificial liquor, on water and fiefh alone, and food prepared from them j and yet are entirely free from the fcurvy.” * Having thus flated the fadls which have fallen in my way relative to this fubjedt, I proceed to a comparifon of their feveral circumftances, and fome remarks on the general refult. The fcurvy appears to be the difeafe peculiarly dreaded and fatal in all the above-related attempts to winter in extremely cold climates. Whether the circum fiance of cold itfelf, or the want of proper food, occafioned by it, principally con¬ duces to the generation of this difeafe, is a point not clearly afcertained. From the preceding * “ In Lapplandia obfervabit homines abfque Cerere & Baccho, abfque fale & potu omni artificiali, aqua tantum & came, & quae ab his praeparantur, conrentos vivere. “ Quare Norlandi, ut plurimum, fcorbuto fint infedli ; Sc cur Lappones, contra, hujus morbi prorfus expertes?” H i narrations. too Hr. Atkin on preferving Health narrations, however, no doubt can be enter¬ tained, that it is poflible for perfons to keep free from the fcurvy, in countries and feafons the moft intenfely cold, provided their diet and manner of living be properly adapted to fuch fituations ; and this, without the aid of frefh vegetables, or any of thofe other prefervatives, which have of late been propofed by ingenious writers. When we compare the hiftories above recited, it is impoflible not to be immediately druck with thefe leading circumdances, that thofe in whom the fcurvy raged, fed upon fait provifions> and drank fpirituous liquors whereas thofe who cfcaped it, fed upon frefh animal food, or at lead preferved without fait , and drank water. It is well enough known among fea-faring people, that frefh animal food is ferviceable to fcorbutic perfons ; but whether the condant ufe of it alone would prevent the fcurvy, they have no means of experiencing. As little can we learn from their experience, whether any other mode of preferving animal flefh than that of faking, will keep it in fuch a date as to be falubrious food. But the narrative of the eight Engiifhmen feems to determine both thefe important points ; for their provifion was all of the animal kind, and the greated part of it was flefh, killed feveral months before, and kept from decaying, either by the coldnefs of the climate alone, or by the cooking IOI hi high Northern Latitudes . cooking it had undergone. It is evident, too, that the failors of Kamtfchatka, who fubfift during fo long a voyage on animal food unfalted, mud either preferve it by fmoking, freezing, or other fimilar proceffes, or mud ufe it in a putrid ftate. To this lad, indeed, from the accounts we have of the ulual diet of thefe people, they feem not at all averfe 5 though we may find it difficult to conceive, how the body can be kept in health by food abfolutely putrefied. The Lap¬ landers, alfo, who fubfid fo entirely on animal food without fait, mud have other methods of preferving it for a confiderable time ; and, indeed it feems to be the condant pradice in Ruffia, and other northern regions, for the inhabitants to freeze their meat in order to lay it up for their winter’s dock. Thefe fads lead to the confideration of the quedion, whether faked meat be prejudicial, on account of the quantity of fait it contains j or, merely, becaufe the fait fails to preferve the juices of the fleffi in fuch a date, as to afford pro¬ per nutriment ? The latter, I believe, is the more prevalent opinion ; yet I confefs, I cannot but think, that fea-falt itielf, when taken in large quantities, mud prove unfriendly to the bc^y, I ne feptic quality of Jmall proportions of fait mixed with animal matters (and fmall proportions only can be received into the juices of a living pnimal) has been proved by the well-known H ^ experiment^ 102 Dr. Aikin on preferving Health experiments of Sir John Pringle. But befides this, it may prove hurtful, by the acrimonious and corroflve property with which it may impregnate the fluids. It is univerfally allowed, that much ftlt, and faked meats, are very prejudicial in the diforders vulgarly called Jcorbutic amongfl; us s which, though in manyrefpeds different from the genuine fea-fcurvy, yet refemble this difeafe in many leading fymptoms, as laflitude, livid blotches, fpungygums, and difpofltion to haemorr¬ hage. And fome of the fymptoms of the fea- fcurvy feem to indicate a Jaline, and not a Amply putrid acrimony ; fuch as that of the disjoining of bones formerly broken, in which cafe, the offeous matter of the callus is probably rediffolved, by the faline principle contained in the animal fluids. On the other hand, it feems to be a fad, that feveral of the northern nations, whofe diet is extremely putrid, (as before hinted with refped to the people of Kamtfchatka) are able to preferve themfelves from the fcurvy j therefore, putrid aliments alone will not neceffarily induce it. On the whole, on an attentive confideration of the fads which have been recited, fome of which are upon a pretty extenflve fcale, I cannot but adopt the opinion, that the uje of Jea-Jalt is a very ■principal caiife of the fcurvy ; and that a total abJH- nence from it , is one of the mofl important means for preventing this difeafe. A conflder- in high Northern Latitudes . 103 A confiderable article of the diet of the eight Englifhmen, though neceffity alone could have brought them to ufe it, was probably of confider- able fervice in preventing the diforders to which their fituation rendered them liable. This was, the whale's fritters , which, though deprived of great part of their oil, muft ftill contain no fmall fhare of it. All voyagers agree, that the Samoides, Efquimaux, Greenlanders, and other inhabitants of the polar regions, make great ufe of the fat and oil of fifh and marine animals in their diet, and indeed can fcarcely fubfift without them. In what precife manner thefe fubftances adt, is not, perhaps, eafily explained ; but as the ufe of them would, doubclefs, caufe an accumula¬ tion of fimilar parts in the body, and as we find all animals deftined to endure the fevere cold of the ardtic climates, are copioufly furnifhed with fat, we may conclude, that it pofTefTes fome peculiar efficacy in defending from the impreffions of cold. With refpedt to the warm reindeer’s blood, which the Ruffian failors feem to have thought fo falutary, and the ufe of which is confirmed in one of the quotations ; if it has any particular effiedt in preventing the fcurvy, beyond that of the juices extradted from recent animal fieffi by cookery or digeftion, it muft probably refide in fome unaffimilated particles, derived from the vegetable food of the animal, and ftill retaining H 4. confiderably 104 Dr. dikin on preferving Health confiderably of a vegetable nature. It is well known that the chyle does not immediately lofe its peculiar properties, and mix undiftinguifliably with the blood ; and that the milk, chat fecretion the moft fpeedily and abundantly feparated from the blood, pofifefles many properties in common with vegetable fubftances. As to their other pre- fervative, the J wallowing of raw frozen meat , I am at a lofs to account for any falutary effetts it may have, except as an aliment rendered eafy of digeftion, by the power of froft in making fub- flances tender. To proceed to the next important article, that of drink. It appears, that in all the unfuccefsful inftances, vinous and fpirituous liquors were ■ufed, and probably in confiderable quantities. Thus, in one of the Dutch journals, notice is taken, that an allowance of brandy began to be ferved to each man as foon as the middle of September. Writers on the fcurvy feem almofl: unanimoufly to confider a portion of thefe liquors, as an ufeful addition to the diet of perfons expofed to the caufes of this difcafe ; and due deference ought certainly to be paid to their knowledge and experience : but, convinced as I am, that art never made fo fatal a prefent to mankind as the invention of diddling fpirituous liquors, and that they are feldom or never a necelTary, but almofl: always a pernicious article in the diet qf men in health, I cannot but look with peculiar fatisfa&ioi? in high Northern Latitudes . 105 fatisfadtion on the confirmation this opinion re¬ ceives by the events in thefe narratives. Indeed, from reafoning alone, we might naturally be led to the fame conclufion. \ great degree of cold renders the fibres rigid; and, by repelling the blood and nervous principle from the furface of the body, increafes the vital energy of the internal organs. Hence, the heart contradts more forcibly, and the domach has its warmth and mufcular adtion augmented. In thefe circumdances, dimulants and adringents feem by no means indicated ; but rather fub- ftances of an oppofite nature. We have acquired, by aflociation, the idea of oppofing actual cold by matters ■potentially or metaphorically hot; but this is in great meafure a fallacious notion. On the contrary, it is found that the effedts of exceffive heat are bed refilled by warm and acrid fubfiances, fuch as the fpicy and aromatic vegetables which the hot climates mod abundantly produce, and which are fo much ufed in the diet of the inhabi¬ tants. And if it be admitted as a general law of nature, that every country yields the products bed adapted to the health and fudenance of its inhabitants, we Ihould conclude, that aromatic vegetables, and fermented liquors, are peculiarly appropriated to the warmer climates; while bland, oily animal matters are rather defigned for the ufe of the frigid regions. Spirits, as {intifeptics, may, indeed, feem to be indicated, where jo 6 Dr . Aikin on prefervlng Health where there is a necefTity of living upon corrupted putrefcent fieth ; but they cannot a£t in this way without, at the fame time, rendering the food harder and more indigeftible, and, confequently, leflening the quantity of nutriment to be derived from it. The temporary glow and elevation caufed by fpirituous liquors are, I imagine, very fallacious tokens of their good effefts ; as they are always fucceeded by a greater reverfe, and tend rather to confume and exhauft, than to feed and invigorate, the genuine principle of vital energy. Another extremely pernicious effe<5l of thefe liquors, is, the indolence and ftupidity they occafion, rendering men inattentive to their own prefervation, and unwilling to ufe thofe exertions, which are fo peculiarly necefiary in fituations like thofe defcribed in the foregoing narratives. And this leads me to the confideration of a third important head, that of exercife. The utility of regular and vigorous exercife to men expofed to the caufes inducing fcurvy, is abundantly confirmed by experience. Captain Cook feems to attribute his remarkable fuccefs in preferving the health of his crew, more to great attention to this point than to any other circum- flance. This opinion is greatly corroborated by the relations before us. Captain Monck’s crew, wintering with their (hips in fafety before them, and well fu nifhed with all kinds of fea (lores, could have little occafion for labour. The two companies in high Northern Latitudes , 1 07 companies of Dutchmen feem to have done little during their melancholy abode, but drink brandy, and fmoke tobacco over their fires. On the other hand. Captain James’s men were very fufficiently employed in the laborious tafk of building their pinnace, which, notwithftanding their weak and fickly ftate, they had nearly completed, before they found the work unneceflary. The three Ruffians on Eaft Spitzbergen who furvived, are exprefsly faid, to have ufed much exercife by way of prefervative ; as alio, according to Counlellor Muller, do thofe who winter on Nova Zembla, A difficulty, however, here occurs ; which is, that we know it to be the cuftom of the inhabitants of the very northern regions, to fpend their long winter night almoft entirely under ground j feeming, in that refpeft, to imitate the animals of the country, which lie torpid in their holes and dens during the winter. From the journal of the eight Englifhmen, too, I fnould judge, that they were inattive during the greateft part of the time that the fun was invifible. But it is to be remarked, that in thefe inftances, what I confider as the moft powerful caufe of the fcurvy, the ufe of falted provifions, did not exift ; and therefore lefs power¬ ful prefervatives would be necefiary. Further, the Engliffi crew had a very icantv allowance of provifion of any kind ; which would, doubtlefs, take off from the neceffity of much exercife. 1 hus, the animals which flcep out the winter, take so3 Dr. Atkin on ■preferving Health take in no nutriment whatfoever, and therefore are not injured by abfolute reft. Exercife is probably ferviceable, both by pro¬ moting the difcharge of effete and corrupted particles by excretion, and by augmenting the animal heat. As far as cold in itfelf can be fuppofed a caufe of difeafe; its effedls will be moft dire&ly oppofed, by increafing the internal or external heat. And this leads to the confi- deration of the further means for guarding againft and tempering the intenfe feverity of the wintry air in thefe climates. It appears from the journals of the unfortunate fufferers in thefe attempts, that they endured great miferies from the cold ; their fuel foon proving inefficient for their confumption, and their daily increafing weaknefs preventing them from fearching for more, or keeping their fires properly fupplied. On the other hand, the Englifh and Ruffians had not only made their huts very fubftantial, but had fecured plentiful fupplies of fuel. And the nations who con- ftantly inhabit the arftic regions, are reprefented as living in an actually warm atmofphere in their fubterraneous dwellings, and guarded by impe¬ netrable coverings when they venture abroad. The animals, too, which retire during the winter, are always found in clofe caverns, or deep burrows, rolled up, and frequently heaped together in numbers, fo as to preferve a confiderable degree of in Ugh Northern Latitudes . iO£ of warmth. Of the feveral methods of procur¬ ing heat, there can be little doubt, that warm clothing, and the mutual contact of animal bodies, mull be the mod friendly, as being moft equable, and not inviting fuch an influx of cold air, as is caufed by the burning of an artificial fire. And the advantage of fubterraneous lodg¬ ings is proved by the well-known fatt, of the unchanging temperature of the air at certain depths beneath the furface. Thefe are the moft material obfervations that have occurred to me, on reflecting upon the remarkable hiftories and fafts above related. I would flatter myfelf that they might aftift in the framing of fuch rules and precautions, as would render the fuccefs of any future attempts of the like kind, lefs precarious. I fhall be happy, if they prove acceptable to the Society, to whom I have the honour of addrefting them ; and ftill more, if they in any degree conduce to the wel¬ fare of mankind. no M. de Polier bn the Pleafures of the Mind An Essay on the Pleasure which the Mtnd receives from the Exercife of its Faculties, and that of Taste in particular. By Charles de Polier, Efq. Read February ij, 1782. “ Denique fit quodvis fimplex dentaxat et unum.” Ho a. de Art. Poet. HAT the exercife of the mind is no lefs JL necefiary to the exiftence of man, than that of the body, appears incontrovertible. The fenfes of the brute part of the creation, are fo much more perfect than ours, that thereby they are enabled to purfue whatever is favourable, and to avoid whatever is detrimental to them. In giving us the powers of the undemanding, the Author of the univerfe hath abundantly fupplied that defed. By them, we not only rife fuperior to the beafts in every means of provid¬ ing for our fupport, our defence, and our wel¬ fare ; but we have improved upon nature, and made the whole world fubfervient to our wants, and to our defires. It was not, however, the intention of Providence, that thofe advantages Ihould be gained without any trouble on our fide. The intelledual faculties, for the moll part, lie dormant in us; to roufe them, ftrong exertions ire necefifaryj and men naturally fond of eafe. and Ill hi the Exercife of its Vacuities '; and prone to indolence, would forever, perhaps, remain in a date little fuperior to that of the brutes, if neceffity, at firft, and pleafure after¬ wards, did not call forth thefe latent powers. Pleafure, the parent of joys and amufements, will be found alike the parent of Sciences, and of Arts ; Nature, in her kindnefs to man, having annexed an agreeable and pleafing fenfation to whatever gives exercife to the mind without fatiguing it. To this, we are indebted for the improve¬ ments made to arts, taught, at fir ft, by .neceffity 5 and for the difcovery of many more, either agree¬ able or ufefuL Nay, fuch is the charm of that exercife, that it has been known fo to elevate the foul, as to detach her, as it were, from the body;* and freeing her from its fhackles, fee ^ e read in Aulus Gellius , that Socrates, to exercife his patience, as he fays, but perhaps to indulge, in all its extent, the pleafure we are here fpeaking of, ufed to Hand for twenty-four hours together, in a Heady poHure, unmove¬ able, without even fo much as winking his eyes, which he conHantly kept fixed Upon the fame place, entirely abforbed in his own thoughts, and feeming, as if an adual feceffion had taken place between his foul and body. “ wiH be but doing Mice to Aldus Gellius, though not a very elegant writer, to fet down here his own words. “ Stare folitus Socrates dicitur pertinaci fiatu, per dies atque per nodes, a fummo lucis ortu ad folem alterum onentem, inconnivens, immobilis, iifdem in vefligiis, et ore atque oculis eundem in locum diredis, cogitabundus, tanquam quodam feceflu animi fa£lo a corpore.rt Aul. Cell. Nod. Attic. Lib. II. Cap. r. her 1 1 2 M. de Polier on the Pleqfures of the Mind her in that (late, fo beautifully deferibed by Akenfide, when he fays, in his Pleafures of Imagination, - - ** The high born Joul Difdains to reft her heav’n afpiring wing Beneath its native quarry. Tir’d of earth And this diurnal feene, fhe fprings aloft. Through fields of air; purfues the flying ftorm. Rides on the vollied light’ning through the heav’ns ; Or, yok’d with whirlwinds and the northern blaft. Sweeps the long traft of day.” I omit the reft of that noble paffage, too long to be here inferted ; but written with all the enthu- fiafrn of poetic genius , joined to all the fweetnefs and harmony of numbers. Vide Akenside’s Pleaf. of Imag. B. I, Ver. 183. The hiftory of Archimedes , the famous Sicilian Philofopher, is well known. Neither the fenfe of decency on one occafion, nor the fenfe of danger on another, could divert his thoughts from the objedt they had in view, and from the pleafure they afforded him. If the truth of thefe furprizing anecdotes may be doubted, let us at lead acknowledge the poffibility of them, from what we may obferve every day among us. Would not one imagine, on feeing a Chefs-player, for inftance, fo entirely wrapt up in himfelf, as to appear infenfible to every thing around him, that he is taken up with the care of his own fortune, the prefervation of the date, or fome fucli in tie Exercife of its Faculties. 1 1 3 fuch great and important fubjeft ? And yet, all this intenfenefs of thought is produced by the pofition of a fmall piece of ivory, which gives exercife to his mind, and procures him that pleafure in which he feems fo totally ab- forbed. Other instances might be adduced. The entertainment we receive from riddlest charades , and fuch other Jaix d'EJprit , pro¬ ceeds from the fame fource. Every reader, of acute underftanding and refined tafle, delights to meet in authors with fuch delicate thoughts, as not being immediately obvious, are juft concealed enough to give him the pleafure of finding them out, and as fuch, may be compared to Virgil's Galatea , “ Et fugit ad Salices, et fe cupit ante videri.” Vi r.g. Buc. Eel. 3. There have been fome men who have thought, that the exercife of the mind was only agreeable, by anticipating the reputation which it might give. But, however ftrongly the motive of fame may operate on the minds of fome, yet the proportion, when attempted to be made general, is confuted by daily experience. How often do we employ whole hours in reading and meditation, without the lead view to futurity, and merely, to gratify the prefent 'moment ? Does not this prove, that, independent of any other incentive, there is a pleafure inherent in whatever exerciles the mind without fatiguing it ? VOL. I. I This 1 1 4 M. de Poller on the Pleafures of the Mind This principle does not hold good of the mind only, but is equally applicable to every other component part of our being. There is an agreeable fenfation annexed to whatever exercil'es the organs of the body without weakening them j and in the fentiments or emotions of the heart , whatever keeps clear of the tumult of the pafiions, is attended with a degree of pleafure. Proofs of thefe pofitions might be brought innumerable, but would probably be unneceffary. Mod of the ancient philofophers have laid them down, as the foundation of their ideas of human perfedtion : and there are few perfons, I believe, of any reflection and experience, who have not felt the truth of them in themfelves, or obferved it in others. Jlluftrations might, perhaps, be more agreeable than proofs j but in a fubjedt of fuch an extent, and which embraces no lefs than the whole circle of phyfiology, ethics, and Belles Lettres, it is neceffary to confine onefelf, and I fhall therefore do no more at prefent, than offer to the Society fome few imperfect remarks, on l'uch works of art, as give exercife to the mind, and come, chiefly, under the province of that faculty of the underftanding, known by the jiame of 'Tafle . This choice is not altogether arbitrary. Mere intellectual pleafures, however agreeable in themfelves, by overtraining the mind, become at length painful. Organic enjoy* ments lad onlyas long as we are invigour. But the pleafures ii5 in the Exercife of its Faculties. pleafures of the eye and the ear, as Lord Kahns ingeniously obferves, in his Elements of Critici/m, holding the middle way between thefe two, are particulaily fitted to occupy the mind without exhauffing it. They relax it after intenle ftudy, and reftoie it to its proper tone, after the fatiety and difguft, caufed by the mere pleafures of the fenfes : they tend, therefore, mod effentially to prove the principle I mean to illuftrate. We fhall find, accordingly, that the agreeable fenfations we receive from the produ&ions of the fine arts, are, in a great meafure, owing to the order and fymmetry, which enable the mind to take in, without labour, ail the different parts of them. It is by this, that rhyme becomes agreeable in poetry. Some have contended in¬ deed, that this return of the fame founds, invented in the Gothic ages, ought to be clafied among the Acroftics, Anagrams, and fuch other frivo¬ lous productions, whofe only merit lies in their difficulty. They inftance the Greeks and the Romans, whofe poetry, far more harmonious than ours, charms the fenfe, and delights the ear, without the help of rhyme. Eut they do not feem to have attended fulficiently to the ufe of poetry, and the nature of the ancient languages. Verfcs are made to be fung, or to be rehearfed. From the mouth of the aCtor, the mufician, or the reader, whoever he may be, they are fuppofed to pais into the minds of a whole people ; and I 2 their 1 1 6 M.de Polier on the Pleajures of the Mind their compofition is the more perfect, the more readily they prefent themfelves to the memory. The Greek and Latin tongues, by means of their long and fhort fyllables, and the various meafures into which they may be reduced, form a kind of chaunt , melody , or noted air , which the memory can eafdy lay hold of, and therefore, the return of the fame founds, becoming ulelefs, would caufe nothing but a difagreeable repetition. Our modern languages have not the fame advantage, or poffefs it, at lead, in a much lefs degree. The blank verfe of the Englifh, German, and Italian, except in very few fhining exceptions, feems (as was quoted fome time ago, in a very ingenious paper prefented to this Society) to he verfe only to the eye , or depends at lead fo much on the fkilfulneis of the reader, as not to obtain the effeft above-mentioned, with by far the greated part of thofe who read them. Poems, where it is ufed, are not popular: the ideas they convey, the fentiments they mean to inculcate, however forcibly exprefled, do not eafily recur to the memory : and, I dare fay, that for one perfon who remembers a paffage from Milton, Young, or Akenfide, there are twenty who will quote fome from Pope, Dry den, or Prior. 1 This controverfy has long been decided in France , where, notwithdanding the drenuous efforts of one of its greated poets (Manfieur de la in the Exerctfe of its Faculties. 1 17 la Motte) rhvme has kept in poetry the domi¬ nion, which the nature of the French language incontedably gave it. In England , where a Shakefpeare and a Milton have written, the matter leems yet to be Jub Judice. It would ill become me, as a young man, and a foreigner, to be that judge ; but I may be indulged in fupporting what I have al- ledged here in favour of rhyme, by the opinion of the bed critic now living in this nation. Dr. Jchnfon ; who, admiring the powers of Milton , and the amazing dignity given to his fentiments, by a verification which he otherwife rather difapproves, adds, c< He that thinks himfelf capable of adonifhing, may write blank verfe: but thofe that hope only to pleafe, mud con- defcend to rhyme.”* Another general objection has been brought againd rhyme. “How comes it, fays Monfieur de la Motte, that this monotony, which you affirm to be, by its nature, fo agreeable in poetry, is almod condantly fo unpleafant in a fider-art, in mufic ?” To this might be anfwered, that the chief objedt of the mufician being to delight by the founds, he cannot fucceed better, than by varying them judicioufly : whereas, a Poet is not fatisfied with charming the ears of his audience j he wiflies to imprels on their * Dr. Johnfon’s Life of Milton. I 3 memory 1 1 8 M. de V oiler on the Pleafures of the Mind memory a feries of ideas, of fentiments, of expreffions ■, and there are none of his verfes which he would not be glad to engrave, with indelible characters, on the hearts of all mankind. He avails himfelf, therefore, of the rhyme which modern languages offer him, as the moft favour¬ able help towards the attaining of his purpofe. But to return to our fubjet, from which I mud beg pardon for having wandered lo far. Imitation, which is the principle of all the fine arts, is another fpecies of fymmetry, whether it aits by means of colour, of founds, of geftures, or of words. The objets it prefents, eafily take /A hold of our imagination, by the comparifon we make of them with objets already known to us. Ariflotle and his followers have maintained, that the pleafure produced in the mind, by the repre- fentation of any objet, was owing to its acquiring, by that means, a new degree of knowledge. This opinion feems wrong, becaufe it allows no differ¬ ence between a juft, and an unfair reprefentation j nor any gradation of pleafure, from the different degrees of execution. The mind every way makes a new acquifition of knowledge, and muft, there¬ fore, receive agreeable fenfations alike, from the Iliad of Homer , and the Thebaid of Statius ; the pitures of Raphael , and thofe of a fign-painter j the mufic of Handel, and the uncouth notes of an Irifh piper. Other in the' Exercife of its Faculties. 1 1 g Other philofophers have afferted, that the reprefentation of an objedt pleafes, only by its interefting the pafiions. And fo far it is true, that the foul cannot be moved, or ftrongly affedted, without it. But does not even the lead: interefting objedt make a flight impreftion of pleafure, at leaft on the furface of the foul, if it is well repre- fented, and if an exadt fymmetry is to be feen between the picture and the original ? Every body muft have felt it j and it proceeds from this prin¬ cipal law in the nature of our fenfations — that any objedt becomes agreeable, whofe parts are fo formed, and fo difpofed, as to prefent the mind with an eafy, clear, and diftindt idea of the whole. What is called Contraft in painting, poetry, and eloquence, is another fort of fymmetry, which, by bringing contrary objedts near to each other, fets off the features of the one, by the comparifon we make of them with the features of the other. This relation has been taken from nature, in whofe works it feldom fails of having a pleafing effedt. It is from it, that the views in Switzerland, and in other mountainous countries, are fo particularly agreeable. The diffimilitude of the objedts, which the eye embraces, renders them all more ftriking, and helps the mind to get a clearer idea cf the whole. Thus, when fkilfully applied to the produc- tionsof art, contraft is generally attended with great fuccefs. We accordingly read, that the ancient I 4 fculptors. 120 M. de Toiler on the Pleafures of the Mind fculptors, in order to fet off the beauty of a Venus , a Grace , or an Apollo , ufed to place them in a niche formed in the ftatue of a Fawn, or a Satyr -, and Virgil , in order to paint more ftrongly the agita¬ tion of Dido's heart, places the fcene of her agonies in the night, when Morpheus fpread his peaceful influence over all the reft of mankind. There are, befides fymmetry, certain relations or proportions, which the mind eafily conceives, and which therefore become agreeable. Thus, in architecture, for inflance, the height of the porticos, in regular buildings, is double the breadth : the height of the entablature, is a fourth, and that of the pedeftal, a third of the height of the column. All eminent architects, among the different proportions adapted to their defign, have always made choice of thofe, which the mind could comprehend without any difficulty. The fame may be obferved in mufic. Of all concords, the unijon and the odtave fhould be the mod agreeable, becaufe they excite more vibrations in the fibres of the ear : but the pleafure we receive from this enchanting art, depends more on the mind, than on the organ adapted to convey it. The fifth is the moll agreeable of all concords, becaufe it prcfents to the mind a proportion, the finding out of which, gives it a degree of exercife, that caufes no wearinefs, confequently no difguft. Some compofitions there are in mufic, which pleafe only profound muficians, and ftrike, per¬ haps. 121 in the Exercife of its Faculties . haps, the reft of the hearers, as harfh and dif- cordant. May not this be owing to the very fine tafte of the former, by which they are enabled, in the midft of feeming diflonances, to find out relations, which do not affeCt ears lefs exercifed than theirs ? The analogy which we find in all the works of nature, allows us to conjecture, that the fame law, which determines the agreeablenefs of founds, has alfo an influence upon other objeCts of our fenfes. Some colours, for inftance, fet together, give an agreeable fenfation to the eye, and more fo, than if they appeared Angle. The fame principle may, perhaps be extended to fmells, and to favours, with fome reftriCtions, however ; for, though it may be generally afierted, that thofe which are falubrious are agreeable ; yet it muft be owned, that their agreeablenefs does not always feem to depend on their falubrity. But it is not juft proportion and fymmetrical relation alone, that renders the works of the fine arts agreeable. They are chiefly made fo, by one principal objeCt or common end, to which all their different parts are adapted, and which enables the mind the more eafily to comprehend, and to retain them. Wifdom, in morality, has been defined — The having one good purpofe in view, and ufing the beft means to attain that purpofe. So beauty , in the imitative arts, might be faid to confift, in the choice 122 M.de Tclier on the Vleafures of the Mind choice of a good objeCl, and in making every thing tend to the exprefiion of it, as to one common end. Certain it is, that this correfpondence of the parts with the whole, is to be confidered, as , the firft and principal caufe of agreeable fenfations. It is alone fufficient to give beauty to the moll fimple objeCts ; and, if other embellifhments are wanted, it becomes the ftandard of their propriety, and the rule by which we can determine, whether they are real beauties, or only (tuning blemifhes. But to give the mind an eafier and more agreeable perception of the objeCt, art has (till gone farther. Among all thele parts which are made to refer to one common end, a principal one is chofen, to which all others are fubordinate, and which becomes like a center of re-union for them. Architecture can illuftrate this. Unacquainted with the real beauties of their art, the Gothic architects never failed to place, on both Tides of the body of their buildings, fuch enormous wings, or rather mafies of ftone, as almoft totally eclipfed it, and kept the fight divided and undetermined. Bromante , PalladiOy and after them mod of the modern architects, taught, perhaps, by Vitruvius , but certainly more acquainted than their pre- deceflfors with what would (trike the eyes agree¬ ably, have placed, in the middle of their buildings, a principal part, which, eminent above the reft, gives the fight a fixed point, from which it can glance in the Exercife of its Faculties. 1 23 glance over all the red, and fo enable the mind to get, at once, a clear and didind idea of the whole. All fculptors, in thofe works, where the eye might he divided by the number of figures, fuch as, group, entaglios , baffo- relievos, (hew great at¬ tention to this rule, and always chufe a principal objed, to fix the fight of the beholders. 1 he three Rhodian artifts, whofe joint work, according to the elder Pliny,* has produced the famous group of Laocoon , which now (lands in the Belvidere at Rome , feem to have had that principle flrongly in view, in the difpofition of their figures. The Society, I trud, will forgive me, if, by way of illudration, I here join a defcription of that celebrated monument of human powers, which Michael Angelo, himfelf a wonder of modern times, ufed to call, a miracle of art. This defcription I At all, for the mod part, take from a French book, which deferves to be better known in this country, from whence fo many annually go to vifit the clafiical ground of Italy, and fo many in vain, from the want of proper guides. I mean, Le Defcription bijlorique et critique de P Italic, par Monf. V Abbe Richard, 6 vol. i2mo. Paris 1769. In Englidr, * “ Sicut in Laocoonte, qui eft in Titi domo, opus omnibus, et piflurse et ftatuarite artis, anteferendum, ex uno lapide, cum et liberos, draconum, mirabiles nexus, de Confilii fententia fecere, fummi Artifices, Agriander , Polidorus, et Atbenedorus, Rhodii.” Px.iN. Hift. Nat. Lib. XXXVI. cap. 5. An I 124 M.de Polier on the Pleafures of the Mind An hiftorical and critical Defcription of Italy. By Abbe Richard. Six vols. i2m0. The group of Laocoon was found in the Thermes, or Baths of Titus, about the year 1506, under the pontificate of Julius II. who immediately bought it from the pofiTeffor of the field, where it had been dug out. The figures are higher than nature, and of fo beautiful white marble, that the fight of it alone charms the eye. The woikmanfliip is exquifite, of fuch a noble ftyle, and fuch a corredlnefs of execution, as befpeak it a work of the beft Grecian age. It is not the Laocoon defcribed by Virgil , as rending the fky with his (hrieks, ftruggling hard for his life, and roaring, like a bull flying from the altar where he has been wounded. nefs, without an adual enumeration of all the people in the ifland. This may be thought a work of too great extent and trouble, to be attempted. So it would, indeed, if it were to be effeded by one, or a few perfons. But how very eafy would it be, if performed by the parifh officers ? They, by the duty of their office, are obliged to have a complete lift of all thofe, who are rated towards the relief of the poors and another of all thofe who are the objeds of fuch relief. A lift of thofe who are not in either of thofe daffies, would coft the officers of any parifh very little trouble. Confequently, the number in each clafs, and the fum total of the whole, might 138 Mr. Wimpey on (Economical Regijlers. might be obtained with as little trouble, as the numbers in each clafs, and the fum total, could be obtained by the officers of any refpedive parifti. If fuch lifts were correctly taken every two, three, four, or five years, the ftate of increafe, or decreafe, might be precifely known, with little or no expence to any body. Of fuch lifts, might be formed a kind of General Diredory; containing the names, addition, number, ages, and fex, of all the families in Great Britain. Thus, in Man- chefter, N. R. Hatter, V> tV 3 males, 4 females, that is, four under twelve, and three above ; three of them males, four females. Let any one carry his ideas through the ftreet he lives in, or is familiarly acquainted with, and he will fee, with how much eale he may acquire a knowledge of all thefe particulars, refpeding every family in it; and, by a fimilar pradice, on a general plan, a precife knowledge may be obtained of every family in the nation. Perhaps it would be too adventurous, to at¬ tempt to recommend a knowledge thus acquired to fome pradical ufes, to which it feems capable of being applied, with a profped of the moft beneficial effeds. A very great part of thofe, who have no other means of fubfiftence, but the fpoils and depra- dations committed upon the public, are, in their manner Mr. Wimpey on (Economical Re-gijlers. 135 manner of living, a kind of citizens of the world, without character, or defcription, fixed habits tion, refidence or connexion, by which they may be traced as to their mode of fubfiftence. And how defirable foever it may be to bring them into bro^d day light, that every man may have his eye upon them, yet in a country, where the blefiing of liberty is delervedly in fuch high efteem, fears are awakened, fufpicions alarmed, jealoufies excited, left any incroachment fhould be made on the liberty of the fubjedl, under the fpecious, but deceitful appearance of public Were this a proper place, I would endeavour- to give the true idea of genuine liberty, in which that of the individual fhould perfectly accord, with the fafety and happinefs of the ftate. Like the bafe of a pyramid, it fhould be eredted on a large extended bottom, its centre of gravity coinciding with its centre of magnitude, which nothing could fhake or overturn, till its materials fhould be crumbled into one common ruin. At prefent, I think it feems to fland, like Fortune on the fummit of a globe, whofe defcent on one^ fide, is into the region of anarchy and licentious confufion •, on the other, of tyranny and flavery, from both which I hope we fliall ever efcape. I will beg leave, however, to throw out a few hints. They may fuggefl the means of- preventing fome, and of detecting others, in the purfuit 140 Mr. Wimpey on (Economical 'Regijlers. purfuit of pradtices, which are the bane of fociety, and a difgrace to humanity. Let us fuppofe, then, that complete lifts have been taken of every family in Great Britain, of men, women, children, fervants, and lodgers. That every town and village were obliged to provide fufficient number of Medals made of copper, about an inch and half diameter, with the name of the town, country, and year infcribed round the margin That every perfc above twelve years of age, fhould be obliged v ?n they went above a certain number of miles from home, to wear it about them, that they might be able to prove fatisfadtorily, who they are, and from whence they come. Acrofs the piece, Ihould be engraved the name, the profeftion or addrefs, and the age of the perfon, at the date of the impreftion. By this means, every per¬ fon would have it in his power to confirm the account he might give of himfelf, by an in- conteftible voucher; and every fufpicious per¬ fon, wherever he might happen to appear, Ihould be liable to be taken before the neareft: civil officer, where he fhould produce his medal, and anfwer all proper queftions, or be liable to be committed by any one of his Majefty’s Juftices of peace. The want of a medal fhould be deemed a fufpicious circum- ftance, and the perfon fhould be retained in fafe cuftody, till he could obtain fufficient proof of Mr, JVhnpey on (Economical Regiflers. 14 1 of the place of his refidence from the parifh officers, or from fome one of them. If any labouring man, handicraft- man, artificer, or workman of any fort, (hall come as a firanger into any town, and afk employment, the perfon who employs him ffiall firfi: demand a fight of his medal, take a copy of its infcription, and by the firfi: poll fend a letter of advice to the officers of the parifh he came from. And in neglect or contempt of fuch advice, he fhall be liable to a penalty fufficient to compel its ftridt obfervance. Upon this plan, fhould any fervant, day- labourer, or workman of any fort, abfcond from his place of abode for any mifdemea- nor, or trefpafs he had committed, he could not proceed many days unapprehended ; for no perfon fhould be fuffered to entertain a ftranger above one night, without taking a copy of his medal, and fending advice to his parifh. A man could not then run away, defert his family, and throw them as a burden on the parifh, becaufe detection would immediately purfue him, bring him back in difgrace, and infiift an adequace punifhment upon him. Were fuch a plan to be prolecuted with vigour, it would be a fufficient bar to every attempt of. thievery and roguery, for impunity in which, the delinquent ultimately depended upon defertion. No man, in his fenfes, could depend upon a means for his fccurity, in which he knew before-hand it would 142 Mr. Wimfrey on (Economical Regijlers. would be impoffible for him to fucceed. De- fertion is the dernier refort of every villain. When he finds himfelf fufpe&ed, he inftantly runs his country, and endeavours to fecrete him¬ felf at a diftance, in places to which, as he imagines, fufpicion is lead; likely to purfue him. But under this regulation, whether could he fly ? Let it be whither you pleafe, if he pro¬ duces his medal, it betrays him ; if he does not, it raifes a fufpicion which juftifies his detention, till he is fairly cleared of all fufpicion. As this plan would operate beneficially, in the dete&ion and prevention of villainy, it would fometimes prove no lefs ufeful to the honeft, but unfortunate man. Innocent men have been fometimes apprehended for fpies, for highway¬ men, and other atrocious crimes, from a fimi- larity of circumfiances, which it was not in their power to avoid. A highwayman, well mounted on a grey horfe, fome years fince, robbed in the neighbourhood of London. Soon after, a perfon from a diftant county happened to pafs the road on a good horfe of the fame colour. Some per- fons took the alarm, purfued him, and took him into cuftody. As he was innocent, he came to no harm, but that of being detained all night, and the trouble he was put to, of proving he was not the man fufpedted, which he could do no otherwile, than by proving who he was ; which, in many cafes, where a man is totally un¬ known, Mr. Wimpey on (Economical Regijlers. 143 known, might be attended with much trouble and vexation. I by no means offer this, as a well digefted plan competent to the accomplilhment of the intended purpofe ; but as the outlines of a lcheme, which I am well convinced, by a perfon of abilities, might be made perfectly adequate to every pur¬ pofe propofed. I wdll beg leave to make one obfervation more, before I have done. In a fertile country like England, which grows more corn than its inhabitants can confume, and, of courfe, renders it a commercial article* it is of great importance to afeertain the follow¬ ing fads, for the regulation of the exportation of that article. I. What is the annual average growth of corn in England for a feries of years ? II. What is the annual average confumptioa for the fame time ? Thefe being known, it would appear, what is the annual furplus, and confequently, how much might be exported annually, confiftently with the fafety and well being of the people. This is a queftion of the greateft importance to tills coun¬ try ; a queftion, the ignorance of which has coil this nation millions, and by which our fagaeious neighbours, the Dutch, have profited millions. 1 hough totally negleded, I conceive it might be afeertained with no great difficulty or trouble 144 Dr. Barnes on the Pleafure Jomethnes felt trouble to any body. But this is a matter of too much confequence and extent* to be explained in a curfosy paper. On the Pleasure which the Mind in many Cafes receives fro'tn contemplating Scenes of Distress. By T. Barnes, D. D. Read dpril 3, 1782. Suave mari magno, turbantibus jequora vends, E terra alterius magnum fpedtare periclum. Non quia vexari quenquam eft jucunda voluptas;- Sed quibus ipfe malis careas, quia cernere fuave eft. Lucreti us. 'T'HE pleafure defcribed by the Poet in this motto, and of which he has mentioned fo linking and appofite an inftance, may perhaps, at firftjfeem of fo fmgular and aftonifhing a nature, that fome may be difpofed to doubt of its exiftence. But that it does exi ft, in the cafe here referred to, and in many others, of a fimilar kind, is an undoubted fa<5t : and it may not appear an ufelefs, or difagreeable entertainment, to trace its fource in the human bread, together with the final caufe, for which it was implanted there by our benevolent Creator. “ Shall I, it may be faid, feel complacency in beholding a fcene, in which many of my fellow- creatures Plate '2 Vol I Figi ’ (j\ J UP I T E R y 4. Fi£.2. Jr 1 V E N IT S j C/Ms&i , Fig-.r 3 . — Satfrs ^ _iau/ Fig 4. < Mar s ^ /vs s Fig. 5.^ €gjj \~J Mercury Qj 9 ./ /' f ^j/z/rAj/Z/Y / fi/Mit/ud /is t/ir . d/f d/rMa. Jeptr 2q ,A / 7 fig fir T. S/M/ in t/ir Strand X/tis lr%ilp ! Str.inj/ . \ from contemplating Scenes of Diflrefs . 145 creatures are agonizing with terror, whilft I can neither diminifh their danger, nor, by my fym- pathy, divide their anguifh ? At the fight of another’s woe, does not my bofom naturally feel pain? Do I not fhare in his fenfations ? And is not this ftrong and exquifite fenfibility intended by my Maker, to urge me on to active, and immediate afiiftance ? Thefe fenfations are indeed attended with a noble pleafure, when I can, by friendly attention, or by benevolent communication, footh the forrows of the poor mourner, fnatch him from impending danger, or fupply his preffing wants. But, in general, where my fympathy is of no avail to the wretched fufferer, I fly from the fpedtacle of his mifery, unable, or unwilling to endure a pain, which is not allayed by the fweet fatisfa&ion of doing good.” It will be incumbent on us, in anfwer to thefe objections, in the firft place, to prove the reality of the feeling, the caufe of which, in the human conftitution, we here attempt to explore. Mr. Addifon, in his beautiful papers on the Pleafures of the Imagination,* hasobferved, “ that objects or fcenes, which, when real , gave difguft or pa.n, in defct iption} often become beautiful and agreeable. Thus, even a dunghill may, by the charms of poetic imagery, excite pleafure and entertainment. Scenes of this nature, dignified * Spectator, fixth volume, No, 418. Vol. I. L by 1 4 6 Dr. Barnes on the Pleafure fometimes felt by apt and ftriking defcription, we regard with fomething of the fame feelings, with which we look upon a dead monfter. ... - ........ Informe cadaver Protrahitur: nequeunt expleri corda tuendo Teriibiles oculos, vultum, villofaque fetis Pedtora femiferi, atque extindtos faucibus ignes. Virgil. duiing their dreams, in a manner which they could by no means account for, or reconcile with any circumftance that had previoufiy taken place in real life. And though I have not been able to gratify my curiofity to its full extent, yet I have gained fufficient information to convince me, that the blind feel impreffions ip dreaming, in fome degree, fimilar to the vifible appearances of bodies. A blind Gentleman, with whom I have lately convcrfed, clearly proves to me, that he is confcious of the figure, though he cannot diftinguifh the varieties of the human coun? tenance : and from the confufed efforts he makes fp explain himfclf, it may be perceived, that hq N 3 feels 1 82 Mr. Bew on Blindnefs. feels himfelf alarmed with new fenfations, that bear a ftrong relation to our ideas of light and colour; but which he finds it impoffible to de- feribe, becaufe he cannot fix on any comparative idea whereby to explain himfelf. Thefe dreams, my intelligent friend informs me, are always painful, and, as may naturally be expe&ed, the impreffions are extremely tranfient and unfatif- faflory. But it is not the blind only, who are unable to trace the various effe&s produced by light and colour. There are perfons, whofe organs of vifion are fo imperfedtly formed, that they can* not diftinguilh colours, though they fee the objects -perfeftly. In the Philofophical Tran factions we have an account of a man who knew no difference of colour whatever; and there is an in¬ genious perfon, within the circle of our acquaint¬ ance, whofe knowledge in Perfpeftive, as well as in the other branches of Natural Philofophy, is unqueftionable ; yet who finds himfelf defici¬ ent in difeerning the difference of fome colours, which he knows to exilt, and v/hich are diftin- guilhable to perfect vifion. In particular, I think I have heard him mention, that the fenfation he felt, from the colours of brown and green, had no obvious difference, provided they were diffufed with equal degrees of intenfenefs. But thefe fpeculations, however curious and entertaining, were not the principal objefls I had Mr. Bew on BUndneJs . 1 83 had in view, when I fat down to confider the fubject of blindnefs. It may be remarked, that in the fketches, relative to blind people, I have offered to your notice, I have purpofely avoided fpeaking of fuch, as had ever poflfefled the fa¬ culty of vifion, fo as to recoiled!: it with any degree of accuracy : and I have been the more particular in my account of Dr. Moyes, and the blind projector of roads, becaufe I had an oppor¬ tunity of availing myfclf of immediate inform¬ ation from them, with refpedt to fuch pecu¬ liarities, as it was not in my power to derive from the writings of the few authors, who have treated on this fubjedh * In tracing the progrefs, and marking the degrees of perfedtion, to which the mod celebrated blind people have carried the exertions of the other fenfes, to fupply the lofs of fight ; I was perfuaded, that farther obferva- tions and difcoveries might be made, which might be applied to advantage in the education of blind children; and alfo in rendering more perfedt, the different inventions, that have already been de- vifed, in order to facilitate their information, and the means of their improvement : and I * Befides occafional hints which I have acquired from converfing with various blind people, whofe names are not mentioned ; I have particular acknowledgments to make to Mr. Cheefe, the organift of the collegiate church in Mancheller, for the fatisfa&ion he has afforded me in many of my inquiries. flattered 184 JVfr. Maffey on Saltpetre. flattered myfelf, that thefe matters would be deemed fufficiently important, to engage the attention of the learned members of this Society. Inftances too frequently occur, that mod: power¬ fully call for the generofity and companion of mankind; and though our abilities rarely arrive at the divine perfection of giving fight to the blind , we fhall always experience a confcious bene¬ volent fatisfadion, in miniderins to their know-? ledge, their convenience and happinefs. A TREATISE ON SALTPETRE, By James Massey, Efq. - - - - fx quid novifti redtius iftis Candidus Imperti, fi non his utere mecuai. INTRODUCTORY OBSERVATIONS. fT'HE great importance of Saltpetre, fince the invention of gun-powder, is too well known to be here expatiated upon, as well as the nu¬ merous rewards that have been offered to thofe who fhoulc! give us the cleared and bed accounts of it ; a fure fign that, notwithdanding it has been Mr. Majfey on Saltpetre. 1S5 been long made in very confiderable quantities in almoft every part of Europe, our knowledge cf this fait is ftill very imperfedt. This induced the author of the following pages, many years ago, to turn his attention to this fubjedt, and he flatters himfelf, that, by long obfervation, and a pradlice which, though not very extenfive, may have been fufficient for this purpofe, he has made fuch difcoveries, as may render the bufinefs of faltpetre-making no lefs eafy and familiar to his countrymen, than it has long been to our neighbours upon the continent. He never, indeed, could be brought to believe, that it was owing to any defedl in our climate, or to the want of materials, that we have io often failed in our attempts this way, but merely to our inattention to fome particular points in the prac¬ tical part, upon which our fuccefs, in a great meafure, depended. Thefe, therefore, he has prin¬ cipally laboured to explore, and to let them in fo ftrong a light, that they can no longer efcape our obfervation. It is the cuftom of the faltpetre makers abroad, to wait till the earths they have procured, or pre¬ pared for this purpofe, are found fit to anfwer their end j a pradtice, which we have reafon to think has rarely been followed by our country¬ men, who, finding the earths they have employed, imperfedt upon the firft trial, have feldom af¬ forded them a lVcond, and thus have rejedled I %eJ Mr. Majfey on Saltpetre. many that, in a due courfe of time, might have anfwered their moft fanguine expectations. d hey have, likewise, not duly attended to the large quantities of earth, that our neighbours are obliged to elixiviate, in order to obtain a final! portion of faltpetre ; and finding their portion but trifling in the trials they have made, have too haftily concluded this bufinefs to be fcarcely worth following ; when, had they reflected upon the great number of faltpetre-makers in France and Germany, they muft, certainly, have entertained a very different opinion. But what has chiefly difeouraged us, we pre¬ fume, may have been, our ignorance of the true grounds and principles, upon which the practice of making faltpetre is founded; which, we may obferve, have never been clearly laid open. All that we are told is, that faltpetre is extracted from the rubbifh of old houfes, the bottoms of /linking pits and ditches, and the like; which has induced many perfons to conclude, that this fait is generated in thefe earths : whereas, the truth is, that nothing is extracted from thefe earths but a peculiar acid, which, in con¬ junction with the fixt fait of wood-afhes, and not yvithout, forms this neutral one which cryftallizes in the ley when boiled down as above mentioned ; which circumftances being omitted, it can be no wonder that we are led into very great errors. ' ' ' ‘ Of Mr. Maffey on Saltpetre. 187 Of this acid, the fource from which it is de¬ rived, and the manner in which thefe and other earths become impregnated with it, we (hall en¬ deavour to give the moft full, and fatisfaclory account, as well as of the practical methods of making faltpetre, all which might be comprized in a page or two, had we not a variety of chimeras to encounter, and this practice particularly to (explain. By thefe means we hope to remove all that myftery and obfcurity in which this fub- jedt has been fo long involved ; and to render the practice of making faltpetre as eafy and familiar to the Englifh, as it has long been to the French and Germans, fo much to the advantage of thofp nations. ON SALTPETRE. The great life of faltpetre in the compo- fition of gun-powder, has long rendered it an objefl of the firft importance ; upon which ac¬ count, the learned have fpared no pains to obtain the moft perfeft knowledge of it; but hitherto, as it l'eems, without fuccefs, as no clear and fatisfa&ory account has yet been given of it. And though the methods of making it in Efance, Germany, and many other parts of the world. 1S8 Mr. Majfey on Saltpetre. world, have been minutely defcribed, thefe de- fcriptions, through Tome defeCt or other, have been of little fervice to us, if we may judge from the many fruitlefs attempts to make this fait in England. The common accounts that are given us of nitre or faltpetre, are, indeed fo very vague and various, as rather to confufe and perplex, than give us any clear knowledge of it. Some will have it to be a production of nature , others en¬ tirely of art. Some tell us it is drawn from the air; others, that it is extracted from vegetables and animals. We are told too, that it is found upon the furface of the earth, and upon old walls in the form of hoar froft, and that whole pro¬ vinces are fometimes covered over with it; all which is certainly very falfe and fallacious; if, by faltpetre, in this place, is meant that faline concrete, which is of fo much ufe in the com- pofition above-mentioned; which, though fome¬ times found in the walks of nature, is molt afturedly, in general, a production of art. Saltpetre, to give a juft defcription of it, is a neutral faline concrete, evidently formed by a combination of a peculiar acid, with a fixt ve¬ getable alkaline fait. This acid is found in certain earths, from which it is extracted, by elixiviating them along with wood-afhes, the fixt fait of which, uniting with the acid, forms this neutraj Mr. Maffey on Saltpetre. 189 neutral one, which cryftallizes in the ley when boiled down to a due confidence. From this plain account of the formation of faltpetre, it muft be obvious, that it can no where be found, without the concurrence of thefe two principles ; and, conlequently, not in the air, or in vegetables or animals, becaufe, though this peculiar acid may, perhaps, be found in thefe fubjeds, the fixt fait muft needs be wanting. That it may be fometimes found in the earth, we fhall not deny, owing to the accidental intro¬ duction of wood-afhes to a foil impregnated with this acid. And that from hence it may pafs into the ftems and apices of fome plants, with the moifture that enters their roots, is far from be¬ ing improbable. But that whole provinces can even be covered over with it, or that it can be generated in thefe organized bodies, as Lemeri and fome others have imagined, muft exceed all belief. The accounts, which travellers generally give us of this fait, are, that it is extracted from the foil of the countries they have vificed, by elixi- viating it with water, and evaporating the fluid ; which we believe may be confiftent with truth j but here it fhould not be forgotten, that a certain portion of wood-afhes is always added to this foil before it is elixiviated, a circumftance which, either through ignorance or inattention they have too often omitted to mention. We are told, indeed. igo Mr. Majfey on Saltpetre. indeed, by Mr. Bowles, that in Tome parts of Spain, they have an earth that yields the cryf- tals of this fait without any afliftance of this kind ; and this in fuch quantities, as might fupply all Europe with this article. But till this fa4 Mr. MaJTey on Saltpetre. This Gentleman tells us, that if we fprinkle the clay floor of a tobacco houfe with ambeer3 which we take to be a putrid infufion of tobacco, and cover it with the rotten leaves, in a fort¬ night’s time, upon removing the leaves, we fhall find the floor covered with faltpetre, in the form of hoar froft, drawn from the air , which being fwept up, and elixiviated with warm water, will afford us a ley, that, being boiled down to the confidence of cream, will (hoot into cryftals of this fait. Now we can eaflly believe, that thefe fweepings, with the afliftance of wood-afhes, would afford us fuch a ley, but not without ; and' 'therefore muft conclude, that there is here fome omiffion. We muft farther obferve, that this Gentleman takes no notice of any marine fait that is formed in this ley, which, being found in all nitrous leys, muft render this account very fufpicious. And what may give us a more unfavourable opinion of this method, is, that, flnce the author obtained a reward of three hundred pounds from the Britifh Parliament for this notable difcovery, we have heard no more of it. Whilft the feveral parts or principles of which this faline concrete is compofed remained un¬ known, we might give credit to a number of tales refpetting its origin and formation ; which, at this time, without betraying the greateft weak-? nefsa Mr. Mafjey on Saitptre, 20$. flefs, we cannot give the lead ear to — of its being drawn from the air — of its being generated in Vegetables and animals — of its being found upon the furface of old walls — and, to conclude the whole, of its being formed without the adiftance of a fixt fait ; all which mud be found equally repugnant to reafon and experience, which we may bring the ordinary pra&ice of making falt- petre to confirm. And here, we cannot help expreding our fur- prize, that fo much time has been fpent by many ingenious perfons in the difcovery of new methods of making faltpetre, w'hen it mud be obvious, that, in cafe they fucceeded, there is none that could be more plain, fimple, and lefs ex- penfive, than the old and approved one, of which, vve fhall now proceed to give a more particular account. •In large and populous towns, the faltpetre makers chiefly make ufe of the rubbilh of old houfes, the ruins of old vaults and cellars, &c, Thefe they collect, and, having reduced them to a coarfe powder, elixiviate with about one third the quantity of wood-alhes j in which ley, when boiled down to a due confidence, the crydals of faltpetre are found to (hoot. During the boiling, large quantities of marine fait are formed in this lixivium, which, crydallizing whild the lit quor is hot, are taken out with perforated ladles. The So 6 Mr. Majfey on Saltpetre. The ley is then taken out, and fet in a cool place for the faltpetre to cryftallize. In defed of thefe earths, they colled thofe of flables and cow-flails, that have drank up much animal urine, the bottoms of ftinking pits and ditches, efpecially of thofe, that have received the contents of fiaughter and privy houfes. Thefe they take out, and lay in heaps, commonly mixt up with a little lime, till, by repeated trials, they find them fit for their purpofe ; which is known, in fome meafure, by their having totally loft their offenfive odour, a fure fign that their putrefadion is completed. Where thefe earths cannot be procured in fufficient quantities, they form, what are called, artificial nitre beds, by laying all forts of putrid and putrefiable fubftances in conjundion with calcareous earths, keeping them in a moiftftate, and waiting, as the phrafe is, till they are brought to maturity. If the wood-afhes are not added, when thefe materials are committed to putrefadion, they are added when they are elixi- viated, but never, that we have heard, omitted. The common peafants in France and Germany, who are almoft all faltpetre makers, ferape toge¬ ther the muck and offals of their farm yards, and, throwing them under open fheds, fuffer them to lie, till they find they will anfwer their end. Though they know little of the ufe of putre¬ fadion, they take care to promote this procefs, by Mr. Maffty on Saltpetre. Percival on a Tafte for the Beauties of Nature. pious % 34 Rev. Mr. Hall's Inquiry concerning pious and grateful jentiments towards the a!P mighty Creator. A mind thus happily dif- pofed, in the animated language of Shakefpeare. “ Finds tongues in trees, books in the running brooks. Sermons in ftones, and good in every thing.” I fhall now mention a few inftances, where tafte feems to be productive of misfortune, and immorality. We frequently fee a man of real and acknowledge tafte, run into all the folly, and extravagance of virtue Jt is not fufficient for hiiTi, that he may be regaled with the pro¬ ductions of art and genius, in the pofllrflion of another. A man of this unhappy uirn, feels 4 reftlefs defirp to call them his own. He is perpetually in queft of fome new objeCt •, but his unfortunate paftion grows more violent by indulgence ; and, however a new acquifition may gratify for the moment ; yet, in the end, it becomes the fource of frefh difquiet. Thus^ like Pope’s Curio, who? ........ “ Reftlefs by his fair one’s fide. Sighs for an Qtho, and negle&s his bride He is perpetually haunted by the demon of tafte; his mind becomes fretful, peevtfh, and diftatisfied ; equally incapable of giving, or receiving fatisfaCtion. But, fhould his circum¬ stances be contracted, the confequences are dreadful indeed ! He involves his deareft con¬ nections in all the miferies of poverty. “ The the Influence of Tafle on Morals. 235 «* The bailiffs come, rude men, profanely bold, And bid him turn his Venus into gold. No Sirs 1” he cries, “ I’ll fooner rot in jail ! Shall Grecian arts be truck’d for Englilh bail ? Such heads might make their very buftos laugh: His daughter ftarves : but Cleopatra’s fafe.” * Another is betrayed into a condud equally ridiculous and fatal, by a take for the elegances of life, and domeftic refinements. Fancy is ever ready to fugged fome new plan to be executed, or improvement to be made. The houfe is capable of dill higher embellifhments ; and the garden may be laid out, in a manner more beautiful. He complies with the fuggedions of his refined tade — involves himfelf in diffi¬ culties — and is at length ruined. The malady of a third is, an exceffive and fickly kind of delicacy. His feelings are fo nice, and his ideas fo refined, that he is irritated and vexed with every trifle. lie is not only affeded - - - - - - - - - “ with quick difguft. From things deform’d, or (Jffarranged, or grofs In fpecies.” j- Even thofe objeds, which to others afford very confiderable pleafure, are feen by him, with a joylefs indifference. But, indeed, almod every avenue to enjoyment is ffrnt up, by this unhappy * Young’s Satires. f Akenfide’s Pleafures of Imagination. difeafe. Rev. Air. Hall's Inquiry concerning difeafe. Yet he nurfes it with the greateft afliduity j fancies himfelf formed of nature’s finefl clay ; and looks with contempt, on the coarfe delights of his fellow-creatures. By de¬ grees, he becomes unfit for the common duties of life, and is cut off from the bleffings, and advantages of focial intercourfe. But we need not appeal to a few inftances of individuals. The prevailing manners of whole nations may be brought in proof, that tafte has no influence favourable to virtue. It is fcarcely neceffary to remark, that Athens was once the feat of learning, tafte, and refinement. The liberal arts were cultivated with the greateft care and attention, and rofe to a pitch of perfection, which has been generally imitated, but never excelled. A tafte for elegance was fo univerfally diffufed among all ranks of people, that even a herb-woman, we are told, could deteCt a very fmall deviation from propriety of lpeech.* Tafte could not pofiibly have a fairer, field, wherein to difplay its natural effeCts. But the hiftory f of thofe times, and the moral leCtures of Socrates, fufficiently evince, that the Athenians were a people, addicted to every kind of fenfual plea- fure : at once, refined and voluptuous, licen¬ tious and effeminate. * Xenoph. Memorab. paffim. f Rollin’s Antient Hiftory, vol. IV. When the Influence of Tafle on Morals l £37 When a tafte for the liberal arts was introduced among the Romans, with the rich fpoils of Grecian elegance and ingenuity, can we difcover in the hiftory of that wonderful people, a con- fequent improvement in the habits of virtue? You will fay, perhaps, their rugged tempers were foftened, and their auftere manners refined. But refinement is often remote from virtue ; and external graces unconnedted with internal beau¬ ties. It is true, they improved in all the ele¬ gances of life; but it is equally true, that their native vigour degenerated, into unmanly floth ; and the Amor P atria , which had carried the Roman name fo high, was fucceeded by a mean and abjedl felfiftmefs*. Cato feems to have been well aware, that a tafte for the enervating arts of Greece, would be productive of thefe mifchiev- ous effedls-f ; and endeavoured by every means in his power, to ward off the threatened evil. But in vain was every remonftrance. A rage for the beautiful produdtions of genius univerfally pre¬ vailed, and bore down all oppofition. And we find the latter Cato, in one of his fpeeches re¬ corded by Salloft, reproaching his countrymen, in the following warm expreffions : Per Deos immortelles , vos ego appsllo : qui Jenifer Domos, * Gxaecia capta ferum vi£lorem cepit. Hoft. Epif. Lib. II. f Liv. Lib. 34. C. 4. Villas , Rev. Mr. Hall's Inquiry concerning Villas , Signay labulas vejlras , ^>/«m quam rm- fublicam fccijlis *. Let me now call your attention to a much later period of hiftory, when talle revived, in the fifteenth century, after a long and gloomy night of Gothic ignorance and barbarity. Foftered by the favour and liberality of the princes of the Medici family, literature and the arts made & rapid progrefs. But it does not appear, that moral duties made equal advances, or were more generally cultivated. Obfcrve, in what unfavour¬ able colours,' the characters of thefe Medici, the great patrons of genius and learning, are drawn by Lord Orrery, in his Letters from Italy , tc Iff fays he, “ you take a view of the princes of the Medici, in a group, you will feel reve¬ rence and refpeCt, at one part of the picture, and be ftruck with horror and amazement, at the remainder. To revere and honour them, you mull confider their generofity, their bene¬ factions to men of learning, their policy, and fcientific initiations. To view them with horror and amazement, you need only liften to the undoubted outrages of their private lives j by which you will be convinced, that few or none of the whole race were endued with the fofter paffions of the human foul. I wifh, that in many of their group, their love * Salluft. Bell. Catilinar, was the Influence of tafle on Morals. 239 was not luft ; their good nature, oftentation ; their dignity, pride; and their fenfe, cunning.” From thefe, and numberlefs inftances of refined depravity, which modern times will furniffi, one might almoft be tempted to conclude, that the effeCts of tafte are fo far from being favourable to virtue, that they have rather a pernicious ten¬ dency. But I mean not to bring fuch a heavy charge againft a faculty, which, connected with reafon and religion, will, doubtlefs, enlarge the fphere of our innocent enjoyments. I wifh only to difprove the affirmative of the propofition, and fhew, that tafte cannot reafonably be con- fidered as a moral principle of action : that, un- affifted by reafon and good fenfe, it becomes fub- fervient to the purpofes of folly and extravagance; and that, connected with a bafe and fenfual heart, it unhappily ferves to embellifh guilt, and glofs over the deformity of vice. Let tafte, however, be cultivated, as thefource of many elegant pleafures : but let it ever be cultivated, in fubordination to found morality. Tafte can ill fupply the want of moral difeipline. Where there is no fuperior principle, to check, the aflaults of an alluring temptation, the heart muft fall an eafy prey. A truly virtuous cha¬ racter, fet off by a juft tafte, is not only engag¬ ing, but even beneficial to mankind : while, on the contrary, a vicious character, however dif- tinguilhed for tafte and elegance, becomes only, the 240 Dr. Eafon on the XJJe of Acids . the more finifhed hypocrite, or the more exqui- fite voluptuary. In a word, let virtue form the bafe and the fhaft of the column ; and I have not the leaft obje&ion, that tafte fhould furniih the foliage, and ornament the capital. Observations on the Use of Acids in bleach¬ ing of Linen. By Dr. Eason. Read Auguft 7, 1782. THE ufe of acids, in bleaching of linen, has been long known. Formerly milk was chiefly employed ; but it had feveral incon¬ veniences. The quantity requifite could fcarcely be obtained ; its effect was flow; and, contain¬ ing animal matter, it was apt to rot and fpoil the cloth. About thirty years ago, it was difcovered, that the folfil acids, when properly diluted with water, anfwered much better, and would do more in a few hours, than animal acids could do in a week, in facilitating the whitening of cloth. At firft, it was imagined, that the mineral acids would be apt to burn, or corrode linen fub- ftances, when immerfed in them. But experi¬ ence foon difpelled fuch fears, and convinced bleachers. in bleaching Linen . 241 bleachers, that, by proper management, the dan¬ ger was next to none. According to the ftrength of the acids they muft be mixed with water, fometimes, to feven hundred times their bulk. The nitrous acid, being the moft corrofive,. and moft expenfive, has not been ufed. The vitriolic acid is that which has univer- fally been employed : not becaufe it is prefer¬ able to the muriatic acid, but becaufe it was to be bought in large quantities, and at a fmall expence. The muriatic acid being now fold nearly as cheap as the vitriolic, and anfwering in a fupe- rior degree, will, in a fhorc time, I. am convinced, be generally adopted by bleachers. As 1 muft confefs my ignorance in the art of bleaching, it may feem prefumptuous in me to hazard a conje&ure concerning the manner in which acids a£t in whitening cloth j but it feems probable, that alkaline falts, which are ufed in walking out the oil and glutinous parts of flax, on which the green colour depends, depofite an earth, in the pores of the cloth. As it is known that acids will alfo diflfolve the earthy parts of ve¬ getables, that acid Ihould be preferred, which will keep earthy particles fufpended in water. The vitriolic, therefore, is not fo proper j becaufe, with earthy fubftances, it forms immediately a felenite; Vol. I. R a fub- 242 Dr. Eajon on the Ufe of Acids , ifc. a fubftance only foluble, in a very large quan¬ tity of water This felenitic matter, adhering to the threads of the cloth, will injure it, and make it feel hard to the touch, and probably is the reafon, why fome linens wear fo badly. When the muriatic acid is ufed, no felenite is formed. Whatever quantity of -earthy matter is difiolved by it, is eafily wafhed out by pure foft water, and the cloth having a foft filky feel feems to ftrengthen this conjefture. As the muriatic acid is now fold at three-pence per pound, and the common vitriolic acid at four-pence halfpenny, and as the muriatic acid will, in proportion, acidulate a larger quantity of water than the vitriolic, befides the great probability of its anfwering better in whitening of cloth, the bleachers in this part of the world would do well to give it a fair trial. Conjectural Dr, Wall on the UJe of Symbols. 243 Conjectural Remarks on the Symbols or Charac¬ ters, employed by Astronomers* to reprefent the fever al Planets, and by the Chemists, to exprefs the feveral Metals, in a Letter to Thomas Percival, M. D. F. R. S. &c. By Martin Wall, M. D. Pra.leClor of Chemiftry in the JJniverfity of Oxford. Read October 9, 1782. S I R, I AM extremely apprehenfive, left the following obfervations, as relating to a fiibjeCt more fpeculative than ufeful, may be thought unwor¬ thy of the attention of your very refpeCtable Society ; yet, defirous to ftiew my juft fenfe of the compliment, which you have paid me, by propofing me as an honorary member, I advance them with great deference, hoping you will fup- prefs them entirely, if they fhould not meet the approbation of your correCt judgment. Whoever engages in the ftudy of Chemiftry, cannot but remark, with fome degree of curiofity, how extenfively the ufe of fymbols or characters has prevailed in this fcience; and is naturally led to enquire, from whence this practice origi¬ nated, and whether the characters ufcd arc merely arbitrary, or have any relation, real or R 2 imaginary, 244 &r‘ Watt on the Ufe of Symbols . imaginary, to the fubftances which they are employed to reprefent- That many of them are entirely arbitrary, is commonly fuppofed by thofe, whofe knowledge of chemical authors is only flight and fuperficialj but the enthufiafm of a few, whofe reading has been more extenfive, fuggefts a different idea- Every character is, by thefe, conceived to convey an accurate defcription of the qualities of the fubffance, which it repre- fents. It is hardly neceffary to obferve, that this opinion is not indireftly fupported by Boerhaave , and his commentator Shaw* : and Dr. Price f in his account of his extraordinary expe¬ riments on mercury, filver and gold, afferts, that the ancient chemifts either knew or believed, that the imperfect metals had a faline principle, which they denoted by a crofs attached to their cha¬ racters. It is impoffible, perhaps, to advance very far in our enquiries into this fubjeft ; yet fome little light may be thrown upon it, by a due attention to thofe characters, which are above alluded to, thofe by which the metals are re- prefented. And firft, it cannot but appear very ftriking, that the fymbols employed to reprefent the feven metals, which alone were known in the earlier ages, are the fame, as thofe which were applied by the firft aftronomers, to denote the feven planets. The chemifts have, in gene- * Shaves Boerhaave, vol. I, p. 68. ■J- Price's "Experiments on Mercury, Sec. Preface, p. ir. ral. Dr. JVall on the Ufe of Symbols. 245 ral, arrogated to themfelves the prior right to thefe chara&ers, upon the pretence, that they point out mod accurately the various qualities of the metals ■, whereas, to the planets they have no kind of relation. Yet, notwithftanding the plau- Ability of their arguments, I am inclined to entertain a contrary opinion, and to believe that the pretenfions of the Aftronomers have a better foundation. Aftronomy was cultivated in all the oriental nations, particularly in iEgypt, Phoenicia and Chaldea, in the very earlieft ages, of which we have any record. Not only the uniform appear¬ ances of the fixed ftars, but even the more irregular movements and revolutions of the planets, and the peculiar circumftances of colour and fplendour, by which they are diftinguifhed from each other, were accurately marked and obferved. In the fame period of time, the opinion of polytheifm had been gradually difleminated : and it was extremely natural, that thofe fplendid bodies rolling apparently above the earth, in the immenfity of fpace, by fuch determined laws, Ihould be confidered as the habitations of the immortal beings, by whofe immediate influence and fuperintendence the affairs of the world were conduced. Having premifed this, let us now, for the far¬ ther inveftigation of this fubjedV, pay a particular R 3 attention 246 Dr. Wall on the UJe of Symbols. attention to the Mythology of iEgypt, which opens an important fund of information, with refpeCt to the hiftory of religion and fcience, in thofe early periods : but we mud not expe<51 to find the path free from obfcurity and difficulty. In that country, the hieroglyphic mode of wri¬ ting was ufed in the greateft extent, and was con¬ nected not only with the fciences, but even with religion. By this learned people a circle was employed to denote perfection, and particularly the infinite perfection of the Supreme Being, their Ofiris , whofe refidence they conceived to be in the great luminary of the day, from whence he diflributed the bleffings of light and heat, to animate the univerfe. Hence, by a very eafy and obvious application, a circle came alfo to be employed, as the hieroglyphic of the fun. The form of the crefcent moon naturally pointed out the fymbol, by which ffie has always been reprefented : nor was this planet deftitute of a divine inhabitant ; but was fuppofed to be the palace of the Queen of Heaven, the wife of Ofiris, the common mother of mankind. * * - - - Imitataque Lunajn Cornua fulferunt - - - Says Ovid of the ./Egyptian Iiis. Met. Lib. IX. 782. That, the idea of the wife of the Supreme Being prefiding over the moon, was afterward introduced into Greece, appears from a beautiful Medallion of the Samian Juno in Mr. Bryant, vol. II. PI. 12. To \ I Dr. Wall on the Ufe of Symbols. 2 47 To explain the remainder of the adronomical fymbols, upon the fame principle, it is neceffary previoufly to remark, that polytheifm in its pu- red form, is nothing more than the deification of particular attributes of the Supreme Eeing, ari- fing from the infirmity of human nature, unequal to the comprehenfion of one all perfedt Being. Hence we are not furprized to find, that the two planets didinguifbed by a fplendor, next to that of the fun and moon, were alfo fuppofed to be inhabited bv, or at lead confecrated to the fer- vice of the two chief Deities, under a different form and name. One of thefe planets is known by the title of Jupiter, and probably derived both its appel¬ lation and its fymbol, from that part of the ./Egyptian mythology, which afferted, that when the gods, in the war with the giants, fled from the wrath of Typhor into /Egypt, they concealed themlelves in the fhapes of various beads, under which they were afterwards worfhipped, and particularly Jupiter under that of a ram, at the celebrated Libyan Temole of Jupiter Hammon. To this circumdance Lucan alludes, in his def- fcription fif the march of Cato through the wilds of Africa ;* and Ovid, more didin&ly, in his ac- • Ventum erat ad Templum, Libycis quod Gentibus unura Jnculti Garamantes habent : ftat certior illic Jupiter, ut niemoraru, led non aut Fulmina vibrans, Aut fimilis noftro, fed tortis Cornibus, Hammon. Lue. Pharf. L. IX. 511. R count 248 Dr. Wall on the UJe of Symbols . count of the wars of the Gods.* This image of Jupiter was not confined folely to the Libyan temple, as we find from lome paflages in Hero¬ dotus,! and many remains of ^Egyptian fuper- perftition which are (fill preferved.! As Jupiter, therefore, was fo frequently worfhipped under the form of a ram, or a figure with a ram’s head, or at lead wearing the horns of a ram, it is not improbable, that the fymbol of this planet was taken from thefe images. It might originally be the perfedl head of a ram, or only one horn. The crofs annexed to it (fee fig. 1. in the ■plate) may be an imperfedt remainder of the outline of the head of the ram, or with more probability we may imagine, that it was originally annexe4 * Bella canit fuperum : falfoque in Honore Gigantas Ponit, et extenuat magnorum Fa£ta Deoruxn, EmifTumque ima de fede Typhoea terrse Caelitibus feciffe metum, cundtofq dediffe Terga fugae : donee feffos Aigyptia tellus Ceperit, & feptem diferetus in Oftia Nilus. Hue quoque terrigenam venifle Typhoea narrat, Et fe mentitis fuperos celafie figuris : Duxque gregis, dixit, fit Jupiter; unde recurvis Nunc quoque formatus Libys eft cum Cornibus Hammon. Ovid. Met. V. 319. f Herod. Euterp. 42. t See a beautiful engraving from a Medallian, repre- fenting Helius Serepis in Mr. Bryant’s Mythology, vol. II. PI. 1 2. and fix prefentations of Jupiter Hammon in Mont- fauccn’s Antiquities, PI. 14. Tom. I. to Dr. Wall on the Ufe of Symbols . 249 to convey fome particular information, and was afterwards retained in the figure, though the intention of its firfb application was forgotten. The ^Egyptians, we are told,* expreffed the different ftages of the inundation of the Nile, by expofing columns or poles, with one or more croffes upon them : and this crofs was fometimes connected with other fymbols, to denote fome other, circumftance, either of the feafon or fitu- ation of the planets, which concurred with the inundation. Hence, we fee it annexed, not only to this fymbol of Jupiter, but alfo to that of Venus, Saturn, and Mercury. As Jupiter was reprefented under this form, it became common in after-times for great princes, who wifhed to be confidered as his de¬ fendants, or whofe ambition led them to afpire to deification, to affume the fame mark of dif- tin&ion in their medals and ftatues, as we fee frequently in thofe of Alexander the Great, and his fuccefibrs, particularly the Seleucids and the Ptolemies. Hence to it was adopted by Marc Anthony, when his extravagant attachment to the ^Egyptian Queen prevailed upon him, to relinquifh the Roman drefs and manners, and to affume the habits and infignia of honour, ufed by the eaflern nations, f As this pra&ice pre- * L’Hiftoire du Ciel par V Abbe Pluche, Ch. I. §. 8. t Cpokt r’s Medallic Hiltory of Imperial Rome, vol. I. ri- 7* F'g- I h lz> 16. vailed 2 jo Dr. Wall on the VJe of Symbols. vailed very extenfively in the eaff, may not thofe metaphorical expreffions, relative to temporal greatnefs and dignity, fo frequently occurring in the oriental languages, and in the Sacred Scriptures, have been derived from thence, viz. ‘thou hajl lifted up my horn ; my horn fhall be exalted &c. &c. &c. &c ? That brilliant planet, which we call Venusy was alfo confidered by the .ZEgptians, as facred to the Queen of Heaven, who, by them, was known by the name of Ifis, and in different countries by al- moft innumerable different appellations. It would lead me very far into the depths of mythology, to prove that the Goddefs, intended by all thefe ap¬ pellations, was the fime, and that the lfis of the /Egyptians was the Venus of the Greeks and Ro¬ mans. * To thofe who are converfant with ftudies of this nature, hardly any proof is neceffary. Accordingly, it may be fuppofed, that the aftro- nomers affumed, as the Tymb'd of this planet, the Sijlrum of Ifis, which we are told by antiquarians, f was a fmall oblong circle of metal, croffed by iron rods, with a handle (as in fig. 2. of the plate) by which it might be held j and that it was ule4 * See tylovlfauectfs Anfiq. Part If. B. II. Ch. 2. and L' Abbe Pluche Hill, des Ciels. Ch. II. §. 3, 11, 12, 13, 14, 15. ■)• See Mcntfauccn s Ant. Tom. II. p. 287. & Abbe Fluehe Hill, des Ciels, &c. Ch. II. §; 3. PI. 17. at Dr. Wall on the XJJe of Symbols. 25 1 at feafts, to point out, by exaft cadences, the movements of the fongs and dances. There might be, therefore, a peculiar propriety in af- fuming this inftrument, as the fymbol of that planet, which was fuppofed to be peculiarly fa¬ voured by the relidence of the Goddefs of mirth and love; and fo often appears in its greateft fplendour and beauty, in thofe evening hours, when the heat, the hurry and labours of the day, give place to coolnefs, tranquillity and peace, or to mirth and joy, the fongand the dance*. The * The Roman Poets have many beautiful allufions to the pleafures which attend the rifing of the evening Jiar. - - - - Cum frigidus aera Vefper Temperat, & Saltus reficit jam rofcida Luna, Littoraque ; halcyonem refonant, & acanthida dumb Virg. G. III. 336. Venerif would naturally fugged, that he was under the patronage of fome Deity, didin- guilhed by fuperior gravity and wifdom •, and thence it was fuppofed to be the rendence of the mod ancient of the Gods, or time itfelf. Hence, as its fymbol, they afiumed the fey the, or the fickle, the particular attribute of that Deity. (See fig. 3. in the drawing). He is ex- prefsly called by Ovid, Falcifer Dens, (Fador, lib, I. 233.) and Juvenal fays that he afiumed the fickle, when he was deprived of the imperial crown, by his fon Jupiter* .... - - - - - - - - prinfquam Sumferit agreftem, pofito Diademate, falcem Saturnus fugiens. Ju-v. Sat. XIII. 38. Hence he is commonly reprefented in medals and datues, holding an indrument of this kind in his hand *. c The red fiery appearance of the planet Mars> particularly, when he is in his mod perfect Quails ubi Oceani perfufus Lucifer unda, Quem Venus ante alios aftrorum diligit ignes, Extulitos facrum Cado, tenebrafque refolvit. Virg. JEn. VIII. 589. * See Montfaucon, Tom. I. PI. 5. Fig. 1. and Bryant's Mythology, vol. II. p. 259, oppofition Dr. Wall on the Vfeof Symbols 253 oppofition to the fun, and at the fame time in his perigeon,* might lead the early afironomers to confider that planet as the refidence of the God of war. Hence we need not be folicitouy to feek for authorities, from ancient hiftory or poetry, to explain the fymbol of this planet, which is obvioufly borrowed from two of the chief inftruments of war, the fpear and the fhield, (fee fig. 4. in the plate.) It is worthy of remark, that we are told by Varro , that the Romans worfhipped Mars under the fimple re¬ presentation of a fpear, before they had any ftatuesor images of their Gods-f*. The rapid revolution and movements of the planet known by the name of Mercury , J more particularly as he never moves, but a fmall * It is not impoflible that Lucan , in the following paflage, alluded to this fplendid appearance of Mars, when thefe circumftances occur in its revolution, where he defcribes it as reigning alone in the Heavens, giving dreadful omens of the calamities impending over the Roman ftate. - - -Tu, qui flagrante minacem Scorpion incendis cauda, chelafque peruris. Quid tantum, Gradive, paras? nam mitis in alto Jupiter occafu premitur, Venerifque falubre Sidus hebet, motuque celer Cyllenius haeret, Et Caelum Mars folus habet --------- Imminet armorum rabies, ferrique poteftas Confundet jas omne. Luc. Pharf. Lib. I. 658. f See Montfaucon , Tom. I. B. III. p. 125. ; Cyllenius celer. Lucan utfupra. difiance 2 $ 4 /Tir// on the Ufe of Symbols. difirance from the fun, and returns quickly, if engaged in the immediate execution of his commands, might lead the firft aftronomers to fuppofe, that this planet was facred to the Deity, whom their mythology had made the fervant, officer or meffenger of the Gods; and, therefore, as its fymbol, they chofe the Caduceus the ftaff of office, which that Deity was fuppofed to bear, (fee fig. 5. in the plate.) If this attempt, to explain the origin of thefe fymbols, be admitted as plaufible, the credit of their invention, and their firft application mult be afcribed to aftronomy. But a greater difficulty now arifes, to point out, by what principles the chemifts were led to appropriate them to their art ; an undertaking much more perplexed, and, which my attempts to ill uftrate, will require all the indulgence and favour of this learned Society. I give up entirely their pretenfions to the invention of thefe characters, and, therefore, ffiall not pay any attention here to the attempts, which Boerhaave and others have made to explain them ; but ffiall proceed upon a quite different plan. The peculiar fplendour of the fun and moon had without doubt been long noticed ; and long before the introduction of chemical fcience, the language of poetry (and in the earlieft ages al- moft all language was poetical, that is, figurative) had difcriminated that of the former by epithets, borrowed Dr. Wall on the Ufe of Symbols: 25 £ borrowed from the analogous fplendour and co¬ lour of gold ; and that of the latter, by thofe borrowed, from the purer white luftre of the moon. A few inftances, out of many, of their metaphori¬ cal mode of expreffion, are inferted in the margin*. The frequent ufe of thefe epithets might eafily lead an enthufiaftic mind to conceive, that a real analogy and correfpondence fubfilled, between thefe planets and the metals. This opinion to a ftrong and fertile imagination (improved too by the aftrological notions, which might at the fame time prevail, concerning the real or virtual emana¬ tions of the planets) might feem to receive con¬ firmation, from innumerable circumftances, and ultimately fuggeft the employment of the fame fymbolical characters for the metals, which had before been appropriated to the planets. Hence * Aurati Solis radii. Virg. jEn. XII. 164. Solis aurata corona. Statii Thab. III. 414. Sol auricomus. Val Flace IV. 95. Aureus axis erat, temo aureus, aurea fummae Curvatura rotae, fays Ovid in his defcription of the chariot of the fun. Metam. Lib. II. 107. Clara mi cante auro — of the palace of the fun. Id. line 2. Sol aureus. Virg. G. I. 232 — G. IV. 50. Niveos Luna levarit equos. Ov. Fall. IV. 374. Nec Candida curfum Luna negat. Virg. JEn. VII. 8. Faveas; Dea Candida, dixi. Ovid Epill. Leander Heroni LXI# Fulges radiis argentea puris. Id. LXXI. gold 2'6 Dr. Wall on the Ufe of Symhots. gold came to be typified, by the circle of the fun, and filver by the crefcent of the moon. The number of the metals, at that time known, agree¬ ing exaCtly with the number of planets, would lead to an extenfion of this analogy to the whole* and every metal would eafily be found, or fuppofed to have a relation to one or other of the feven planets, and receive as its mark the aftronomical character of that planet. Some circumftances, which might give a foundation for thefe fuppofi- tions, fhall now be enumerated. Copper was found, principally, or in the mod confiderable quantities, in the ifland of Cyprus, and the manufacture of brafs was not only invented there, but carried to a degree of perfection unknown in other countries* infomuch that we are informed by Pliny,* that either the metal derived its name from the ifland, or the ifland from the metal. As this ifland was fuppofed to be under the immediate domi¬ nion of Venus, f an obvious connection was dif« * Nat. Hilt. Lib. XXXIV. 2. ■}• K-wpos PiK? uvyoti; IvJoflt xoAwk K*v£T, E7r»!ga1o» c&fv A 'AQpohrn ?. Cyprus autem ortum verfus Pamphylium intra finum Albuitur, amabilis Urbs Dioneas Veneris. Well's Dionjfius, 1 24O. Ipfa Paphum fublimis abit, fedefque revifit Lastafuas: ubi Templum illi, centumque fabso Thurecalent arse, fertifque recentibus halant. Virg. ^En. I. 419. covered Dr. Wall on the Ufe of Symbols', 237 covered, which juftified the application of the fytnbol of the planet to the metal. The Ufe of Iron3 in framing the inftruments of war, prefents fo ftriking a relation, between this metal and the God Mars, that we need not won¬ der, that the fymbol of that planet was applied to difbinguifh iron. The mobility and unfixable nature of the me¬ tallic fluid ghiickfilver , was naturally, by minds thus difpofed to form analogies, compared with the rapid movements of the planet Mercury, and accordingly, the fymbol of the planet was appro¬ priated to the metal. On the other hand, the flow motion of Saturn, the coldnefs of his fituation, fo far removed from the Sun, * and his dull afpedl, which obtained him the epithets of frigida , gelida , rigens f prefented a fufikient refemblance to the obvious, as well as the medicinal qualities of Lead , to countenance the fuppofition of a relation be¬ tween the metal and the planet, and to autho¬ rize the application of the fymbol of Saturn to lead. * Hence Lucan , - . Summo fi frigida Cxlo Stella nocens nigros Saturni accenderit Ignes. Pharfal. B. I. 651. f Plinii Nat. Hill. L. II. C. 6, s VOL. I The ? ta7r?.iosi tititi, xa* ewsSnopa • Ariftot. Meteorol. L. I. Cap. 12. w + Plinii Hilt. Nat. L. XXXI. Cap. 3. J Athens;!. Lib. III. p. 123. 124. Edit. Cafaubon. This Knowledge of the Ancients, 263 This direction is relative to the preparation of the water, to be drank by the patient, which is ordered to be, fuch as has been boiled ; and part of the preparation was performed, with the water expofed to the air, and part, with the veflel clofed up. * The fir ft, referred to the boiling or heating the water, and the latter, to the cooling of it; as I fuppole, it was boiled, to throw out or expel the air, and then doled up, that it might not recover it again when cooling, which would have retarded its refrigeration, according to the modern theory. Galen, though he does not explain the meaning quite in the f fame manner as I have done, imagines, that Hippocrates al¬ ludes to the boiling of water, that was afterwards to be drank cold, as, in the fentencejuft preceding the former, cold things had been recommended. Galen accounts for the obfeurity of this paflage, by informing us, that thefe works of Hippocrates were not written for publication, but as private notes to aftift the memory, * When water is boiled, car# fhould be taken that air fhould be allowed ad million to the veffel, that the veffel be not quite full, and that it have a cover, Farr’s Tranfl. f Galen, however, feems to think, that the water was to be boiled in an open velTel, and, when let down into {he Refrigeratory, to be clofed up, fo as to exclude all air. yialen Comm, in Lib. VI. §. 4. Epidetn. Hippocr. S 4 Qaleq 264 Dr. Falconer's Remarks on the Galen himfelf was perfonally well acquainted with this effedt of boiling, in difpofing water to cool more rapidly, and to a greater degree. tc When,” fays he, “we wifh to render water as cool as poffible, we firft heat it, then furround with fnow the veffel containing it, or, if fnow be wan¬ ting, we place it in the well or dream of a fpring, and thus its temperature is more eafily changed.” This he afcribes to the rarefaction the water had before undergone, which is evidently not the true caufe, as, upon cooling, it would be as much condenfed as before. Perhaps, the true caufe may be, what is generally afligned, the dif- charge of the air. But how does this operate in promoting the refrigeration ? Is it, that after the water has been freed of its air, any part of its latent heat has flown off with it, and thus rendered it more eafily acceflible to cold ? Or, is the refrigeration more eafy, on account of the difcharge of air j as the air, being united with the water, and requiring to be difengaged in freezing, might, by its attradlion to the water, require more cold to difengage it, than would have frozen the water, had it not had that at- tradtion to overcome ? It muff, however, be remarked, that Galen not only fpeaks of water that has been previoufly heated, being more eafy to be frozen , but alfo fays, fuch water is more eafily cooled, even to any Knowledge of the Ancientsr 265 any inferior degree: a fact worthy to be afcer- tained by experiment. II. I believe the faft, Of the produftion of cold by the evaporation of fluids, is efteemed a modern difeovery, as it juftly may be: but it (till ap¬ pears (though the modern difeoverers were not acquainted with it) that it was familiarly known to the ancients, and not only to the Greeks and Romans, but the Egyptians alfo. Athenasus mentions, “ that Protagorides, in deferibing the navigation of Antiochus upon the Nile, or Euphrates, relates the method ufed in that country, of cooling liquor, which was, by firft heating it by expofure to the fun, and then draining it, and fetting it in earthen jars in the higheft, and mofl: open and expofed part of the building, whilft two boys were employed all the night, in keeping the outfides of the jars moift. After this, they preferved the coolnefs of its temperature, by covering the jars with draw. This, fays he, cooled the water to fo great a degree, that they felt no want of ice.” * Galen fays, the method of cooling water, ufed at Alexandria, was as follows : “ About fun-fet, they poured water which had been firfl: heated, into jars, which theyhungupinthe higheftpartsof thebuild- ings, with the windows open, oppofite to that point from whence the wind blew. Before fun rife, they * Athen. p. 124. placed 2 66 Dr. Falconer's Remarks on the placed the jars upon the ground, and moiftened the outfide, and covered them with cool and fucculent leaves, as of lettuce, &c. in order that the water might retain the cool temperature it had thus acquired.” * The modern method of making ice in the pad Indies, refembles the above in many refpe&s. Pits are dug in large open plains, places mod ejcpofed to circulation of air, 4nd of confequence, to evaporation : thefe are ftrewed with reeds, in order to admit the circulation of air on all Tides, and on thefe are placed (hallow pans of earth filled with water, and the texture of thefe pans is fo porous, as to admit the water to percolate through them, in fuch a manner, as to keep the outfide always moiflr, and of confequence, pro¬ ducing cold by evaporation. The water ufeci for this purpofe has alfo been previoufly boiled. It is needlcfs to remark, how much this procefs refembles thofe before quoted, and how probable it is, from the immutability of ancient manners, that it was a cuftom delved frorp very remote antiquity. HI. Some other difcoveries, fuch as, cc The folu- tion of water in air, and that this folution is afiifted by heat and agitation,” appear not to have been unknown to the ancients, though their notion? hereupon were far from clear. * Galen Comm, in Lib. VI. Epidem. Hippoc. Comm. IV. Thq Knowledge of the Ancients. 267 “ The moifture, fays Ariftotle, that is about the earth, being converted into vapours by the rays of the fun, afcends. When it has arifen, the heat, by whofe afliftance it had afcended, leaves the vapour (or, as Dr. Black would fay, becomes fenfible) and then, the vapour again affumes a confidence, and, from being in the form of air, becomes water. Meteorol. L. I. C. 9. ); tvv XKriyuv ctva,xha.£u<;. Meteor, Lib. I. C. 12. -j- - quod radii Solis a terra refiliunt et in fe recurrunt, Horum duplicatio proxima quaque a terris calefacit. Qua ideo plus habent teporis, quia folem bis fentiunt. Seneca Nat. Quail. L. IV. Sett. S» J Meteorolog. De Grandine. || to fxtv tzvrys 'Kxft.'S^ov xoa xo vtpov xxi y\vxv exx^yerai xxi a ar>d fettled them at the fchool of a clergyman in Manchefler, who is eminently dif_ tinguifhed by his virtues as a man, and abilities as a teacher. At this period, our firffc acquaintance with Mr. de Polier was formed. By the laws of hofpita- lity, he was entitled to our attention, as a ftranser : of Charles de Poller. 295 Granger : but his perfonal accompli foments, and the charms of his converfation, foon fuper- feded the ordinary claims of cuftom, and con¬ verted formal civility into efleem and friendfoip. He became our companion in pleafure j our affiftant in ftudy ; our counfellor in difficulty ; and our folace in diftrefs. Amufement acquired a dignity and zefo, by his participation ; and he foftened the' aufterity of philofophy, whenever hejoined in the purfuit. The inftitution, which now celebrates his memory, owes to him much of its popularity and fuccefs j and, fo long as it fubfifts, his name will be revered, as one of its founders, and mod foining ornaments. About the middle of laft winter he was attacked by a complaint, which at firft gave no difturbance to the vital functions. But being aggravated by the fatigues of a long journey to Holyhead, and of a voyage from thence to Dublin, at a time when he laboured under the Influenza , his malady rapidly increafed after his arrival in Ireland ; and put a final period to his valuable life on the 1 8 th of Odober 1782.* The vigour of his faculties, and the warmth of his affections, continued even to the hour of his diffolution. And the amiablenefs of his beha¬ viour, in the clofing fcene of trial and differing • At Curraghmore, near Waterford, the feat of the Earl of Tyrone. U 4 through. 296 Dr. Per rival's Tribute to the Memory, &c. through which he pafied, gave fuch completion to his chara&er, that we may apply to him, what the Poet has Paid of Mr. Addifon ; - - - - He taught us how to live ; and, oh ! too high The price of knowledge, taught us how to die, * On this affecting event, I cannot exprefs your feelings and my own, in terms fo forcible as thofe of the animated hiftorian, whom l have before quoted. Si quis piorum manibus locus ; fti, ut ftapien- tibus placet , non cum corpore exjlinguuntur magna anim\uv v-rre^o^xt^ sroAAt*? xai TTtti’ToJ'atarat; Ii^ov 5iairot? j3otj-iAixa?. Diodor. Lib. U. \ Evt avBx Kv$u /3a)y Axa-Sr, jjAciv uvvfyov v.uv avxuygxs xxrxppvroy «c7roht^xi «XofUT«-Tnv ovaxv, xai ro Xvxitoy. Vit. Syllae. J The trees in the Lyceum were probably Plane trees* Varro quotes Theophrallus, for the relation of the large fize and extent of the roots of one in that place. De re ruftica. Cap. XXXVIf. § O/z.oiw; St xu i r, ukuS^i/mu o» xuttoi rut (pCKoaatyuv. Strabon. L. IX. || ... - cujus (Platonis) enim hortuli propinqui non memoriam folum mihi afferunt, fed ipfum videntur in con- ipeftu meo ponere. Cicero de iinib. L. V. In Epicuri hortis, quos modo prsteribamus. Ibidem; banks of gardening among the Ancients. 307 banks of the river Iliflus, and under the (hade of the Platane; but no artificial arrangement of obje&s is mentioned, nor any thing which will lead us to imagine the profpedl to be any other than merely natural. The beauty of this de- fcription was fo much admired, by fucceeding writers of philofophic dialogues,* that it was frequently imitated, and, at laft, to fuch a de¬ gree, that it appeared ridiculous and difguftful, as we may fuppofe from the caution given by Plutarchf againft fuch attempts, in the proems to difcourfes. The Romans feem to have early imbibed fome- what of a tafte for gardens. Tarquin the Proud, is faid to have commu¬ nicated his intentions to his fon, concerning his conduit to the people of Gabii,^ by (hiking off the heads of the flowers in his garden, * Cicero was a great admirer of this paflage in Plato; Qua: (Platanus) videtur non tam ipfa aquula quam Pla- tonis oratione creviffe. De oracore. Lib. I. § 15. •f A^eXe TS hoyov TO »VV IfOVOUOV T £ Y.X\ CXI uq V.xi ay.a xxi \ax.xu;ai tov ayvot txutot) x.Ui t vj Yiftuct -jrfojvaTV) TToan Tr.pvxtav •n’poQv/x.crtfov >j xaMio* £7rtygx(psc$ai. Plutarch Amator. ad Initium. x Livii Lib. I. Cap. 54.. Luc. Flor. C. 8. Dionyf. Itallic. It appears from all thefe accounts, that the garden was adjacent or contiguous to the palace. X 2 I fee 308 Dr. Falconer on the Style and Tdfte I fee but little mention made of a garden* otherwife than as a matter of utility, to produce articles of food, for many years after ; though I think it probable, they might be as matters of pleafure alfo. The writers, however, on huf- bandry, Cato, Varro, Columella, and Palladius, make not the lead mention of a garden, as an object of pleafure, but folely, with refpect to its productions of herbs and fruits ; and I do not imagine it was among the earlieft articles of Roman luxury. The Lucullan gardens feem to be the firtl I can find mentioned, of remarkable magnificence ; though, probably, from the height of extravagance to which thefe were arrived, - they were not the firfb. Plutarch fpeaks of them, as incredibly expenfive, and equal to the mag¬ nificence of kings.* They contained artificial elevations, of ground to a furprizing height, of buildings projected into the fea, and vaft pieces of water made upon land. In fhort, his extra¬ vagance and expence was fo great, that he ac¬ quired from thence the appellation of, the Roman Xerxes. • * Plutarch. Life of Lucullus. Salluftis thought to have alluded to the Villa of Lucullus when, in deferibing the Roman luxury, he fays, “ Nam quid ea memorem, qua;, nifi his qui videre, nemini credi- bilia funt ; a privatis compluribus fubverfos montes, marra conftrata die.” Bell. Catilin. It of gardening among the Ancients . 309 It is not improbable, from the above account, and from the consideration of Lucullus having l'pent much time in Afia, in a fituation, wherein he had an opportunity of obferving the mod fplendid confhudtions of this kind, that thefe gardens might be laid out in the Afiatic ftyle. Thevaft maflfesof building, faid to have been ereCted, might have borne fome relemblance, in the arrangernent and ftyle, to the Babylonian gardens; and the epithet of the Roman Xerxes might be applicable to the tafte, as well as the ftze and expence, of his works. The Tufculan Villa of Cicero, though often mentioned, is not, as far as I can difcover, any where defcribed in his works, fo as to give an adequate idea of the ftyle, in which his gardens or grounds were difpofed. There is but little in Virgil, that I can find, relative to this fubjeCl. Pines,* it feems pro¬ bable, were a favourite ornament in gardens, and flowers, y rofes efpecially, were much ef~ teemed, * Fraxinus in fylvis pulcherrima, pinus in hortis, Populus in fluviis, abies in montibus altis : Saepius at fi me, Lycida formofe, revifas, Fraxinus in fylvis cedet tibi, pinus inhortis. Virgil, Eclog. VII. 1, 65. &c. f Fcrfitan et, pingues hortos quae cura colendi Ornaret, canerem, biferique rofaria Paefti : Quoque modo potis gaudcrcnt intyba rivis, X 3 Et 3io ZV Falconer on the Style and Fajle teemed. Some ola.nts a'fo, of the culinary Kind, as the endive/ R parfley, and the cucumber, were fometimes either planted as ornaments, or elfe intermixed with plants of that kind, con¬ trary to modern practice. I apprehend that flowers and fhrubs were plant¬ ed full as much among the Romans, for the fake of their odour, as the beauty of their ap¬ pearance.* Perfumes were always highly valued in warm climates. Virgil places Anchifcs t in Elyfium, in a grove of bays, and is careful to remark, that they were of the fweet fcented kin .% The Pseftan rofes were chiefly valued for then- excellent perfume; and the fame quality appears to be the caufe, why they were placed by Ti¬ bullus 1| as ornaments to the Elyfian fields. Etvmdes apio ripa:, tortufque per herbam Crefceret in Ventrem cucumis; nec iera comantem Narciflum, aut flexi tacuiflfem vimen acanthi, Pallentefque hederas, & amantes litora myrtos. Georgic, L. IV. L. 1X5. * See Athenaeus paflim, & Anacreon. J aflat odoratos Vota per Armenios. Tibulh, L. I. Eieg. 5. f Inter odoratum lauri nemus. Virg. iEneid. VI. I Calthaque Paeftanas vincet odore rofas. Ovid. Ep. de Pont. L- II. El. 4. H Floret odoratis terra benigna rofis. TibulliL. I. Eleg. 3. Athenaeus fpeaks of the rofe, entirely with a view to its odour. L. XV. P. 681, 682, edit. Cafaubon. I mult of gardening among the Ancients , j 1 1 I muft not pafs over one piece of Roman luxury, relative to gardens, wh is equally pre¬ valent at prefent, viz. the endeavour to produce flowers at feafons of the year, not fuited to their time of blowing. Rofes were then as at prefent, the principal flowers, upon which thefe experiments were tried, as appears from Martial and others. * The next .accounts of ancient gardens I can meet with, are thofe of Pliny, which, we may conjecture, were not only laid out according to his own tafte, but that, alfo, of the age in which he lived. * Ut nova dona tibi, Csfar, Nilotica tellus Miferat, hibernas ambitiofa rofas. Navita derifit Pharios Memphiticus hortos, Urbis ut intravit limina prima tus. Tantus veris honos, et odors gratia Flora:, Tantaque Psftani gloria ruris erat. Si quacumque vagus greffum oculofque ferebat, Textilibus Tertis omne rubebatiter. At tu, Romans juflus jam cedere brums, Mitte tuas mefles, accipe, Nile, Rofas. Martial. Epigr. L. VI. Ep. 80. Dat feftinatas Csfar tibi bruma coronas : Quondam veris erant, nunc tuafa&a rofa eft. Epigr. L. XIV. Epig. 127. ,/Eftivs nives, hiberns rofs. Lamprid. Vit. Elagab. 3 1 2 Dr. Falconer on the Style and Fajle * • His account of his Laurentine Villa,* relates but little to the external arrangement of gardens and ground, but is confined chiefly to the houfe. It appears, however, that the Geftatio, d- or place for horfe exercife, was bordered with box, and where that was defective, with rofemary inter¬ twined with vines. It appears, alfo, that the Geftatio furrounded the garden. J The Xyftus jj likewife, or place for foot exercife, was planted with violets, which feem to have been placed there, on account of their odour. His defcrip- tion of his Tufcan Villa** is more particular. This feems to have poflTeflfed great natural beauties, to which its pofleflfor attended with great judgment. Its fituation appears to have been healthy, and remarkably cool ; infomuch, that the olive and the myrtle would not thrive, nor perhaps, even grow there. This * The Laurentine Villa, we are told by Pliny himfelf, was calculated more for ufe than ornament. “ Villa ufibus capax, non fumptuofa tuteia.” Plin. Epift. L. II. Ep. 17. -}- Geftatio buxo aut rore marino ube deficit, buxus ambi- tur. Adjacet geftatione interiore circuitu vinea tenera et umbrofa. Ibidem Plinii* J Hortum et geftationem videt qua hortus includitur. Ibidem Plinii. U Ante Cryptoporticum Xyftus violis adoratus. Ibidem. ** See Pliny’s Letter to Apollinaris* Lib- V- Epiftol. 6. circurn- of gardening among the Ancients. 3 1 3 circumflance, owing probably, to its proxi¬ mity to the Appennine mountains, fitted it for a fummer refidence. It was placed in the mid ft of a vaft natural amphitheatre, furrounded with hills crowned with lofty and venerable woods: Small rifing grounds of great fertility here and there occurred, which were planted on their fides with vines, and furrounded with fhrubs and under-wood. The lower grounds were full of flowers and plants, always green and flourifhing, and, probably, on account of the difference of temperature of the fituation, varying from thofe of the furrounding country. What added to the beauty of this fcene was, that it was plentifully watered by many rivulets from the adjacent hills, which the coolnefs of the fituation prevented being dried up by the fummer heats. No marfby places were, how¬ ever, to be found, but the whole of the fuper- abundant moifture was carried off into the Tyber, which ran through the middle of the profpeft, and completed the beauty of the fcene, noc only as a piece of water, but alfo, as a navi¬ gable river. The Villa of Pliny was fituated upon one of thofe rifing grounds before men¬ tioned, and enjoyed a diftant and varied profpecl j though the afcent to the place on which it flood was fo gradual, as fcarcely to be lenfible to thofe who went up to it. After j 14 Dr. Falconer on the Style and T afte After this account of the natural beauties of this elegant fituation, which its noble poffeffor fecms to have been thoroughly fenfible of, and to have entered into with the higheit taile and delight, we are furprized and forry, to fee the artificial part of the profpedt, form fo difgraceful a contrail. The Xyilus, or court before the portico, for walking and exercife, was parted into numerous divifions of diverfe ihape, all edged 'with box. The Hope lawn, or dcfcent from thence, was bordered on the Tides with figures of beads, cut in box trees. The interior fpace feems to have been planted (probably here and there only) with acanthus. Thefe were iurrounded by a walk, (haded by ever-greens, ihorn into different ihapes : and the whole again incircled by a riding path, which was fecured on the outfide by a wall, or rather mound of earth, covered with box trees, rifing one row abdve another, in form of fteps. Oppofite to the middle of the portico, there was a fmall court, forrounded by a fummer-houfe, and ihaded by four plane trees, in the midft of which, a fountain arofe into a marble bafon, and running over the edges, fprinkled the trees and the grafs underneath. In the front of the buildings, lay a plantation of trees, in form of an Hippodrome, open in the middle, in order that its whole extent might be perceived at one view, and incircled with plane trees, covered with ivy, in fuch a manner? of gardening among the Ancients. 3 1 5 manner, as that they appeared, in their lower parts, to be compofed of that flirub, while their tops flourifhed, in their native verdure and foliage. The ivy, fpreading from one tree to another, conne&ed them together into an uniform appear¬ ance. Between each of the plane trees, box were planted, and behind thefe, bay trees, which blended their' fhade with that of the planes. This plantation formed a fireight boundary on each fide of the Hippodrome, and, at the end, bent into a femicircular form, bordered with cy- prefs trees, which ferved to vary the profpedl, and to call a deeper and more gloomy fhade whilfl the internal circular walks, feveral of which there were, planted with roles, formed a contrail to the fhade of the others. Thefe winding paths terminated in a ftreight walk, which again divided into feveral others, feparated from one another by box hedges. In one place there was a little meadow ; in another, the box was cut into a tnoufand different forms ; fometimes, into letters, expreffing the name of the mafter ; fome¬ times, that of the artificer ; whilfl here and there, little o'oelifks arofe, intermixed alternately with fruit trees ; and in the midft of this regularity of arrangement, fo fuited to the tafle of the inhabitants of a great city, there arofe an unex- pefted fcene, refembling the natural beauties of the 3 1 6 Dr. Falconer on the Style and Fajle the country, in the center of which lay a fpot, furrounded with dwarf plane trees. Beyond thefe, was placed a plantation of acan¬ thus, and, as you proceeded, the trees were cut out into various figures and fliapes. At the ter¬ mination, was an alcove feat, of white marble, fupported by four finall Caryftian marble pillars. Underneath the feat, the water gullied out, through feveral fmall pipes, as if prefied out by the weight of thofe who repofed themfelves upon it. This water was again collected into a Hone cittern beneath, and received, from thence, into a poliflied marble bafon, fo artfully con¬ trived, as to be always full without overflowing; though the means, by which this was brought about, were not obvious to the view. We are alfo told, that this bafon ferved, fometimes, as a table at fupper, the larger difhes being placed on the edge, whilH the fmaller fwam about, in form of little (hips, and wild fowl. Corref- ponding to this was a fountain, inceflantly filling .and emptying; the water being thrown up to a great heighth, and falling back into the bafon, from whence it ran off. Fronting the alcove, flood a marble Summer-houfp, with folding doors, projecting and opening into a green inclofure, fo that, from the upper and lower windows you might diftinguifh a variety of different verdures. Seats of marble, with foun¬ tains by their fides, were difperfed through the gardens s of gardening among the Ancients. 3 1 7 gardens; and throughout the whole Hippodrome, ftreams of ivater were conveyed in pipes, to dif¬ ferent fpots, to water and refrefh the trees and verdure. It is obvious, that the above defcriptions bear, a ftriking refemblance to the tafte in gardens that prevailed in this country, and indeed throughout Europe, towards the beginning of the prefent century. The walks bordered with box and rofemary ; the terrace planted with violets, at the Laurentine Villa; and the court divided into parterre divifions, edged with box ; the figures of animals cut out in box trees, placed oppofite each other, upon the Hope ; with the furrounding walk, inclofed with tonfile ever¬ greens cut into fhapes, point out the fame re¬ femblance, in the gardens at the Tufcan Villa. The circular amphitheatre of box, cut into figures, and the walk, covered with graduated fhrubs, are all exaclly in the fame ftyle. The fountains overflowing; the marble bafons ; the little jets d’eau about the feats, and under the alcove; the fudden difappearance of the water; the fpouts in the grafs ; the regular difpofition of the trees in the Hippodrome, in lines ftraighr, and regularly curved ; together with the arrange¬ ment of the different kinds behind each other, make one think, Pliny was rather defcribing a Villa of king William, or Louis XIV. than one of 318 T>r. Falconer on the Style and T afte of a Roman nobleman, and fenator, feventeen hundred years ago. Some circumflances, in the above defcription, appear in many refpe&s, abfurd and excep¬ tionable. But let us not be too hafly in our cenfures : but confider, whether the nature of the climate and country may not vindicate them, in feveral refpefts, from the imputations which might have been juflly afcribed to them, under different circumflances. The walks, bor¬ dered with box, a tree of clofe growth, and faid to flourifh extremely in that fituation, formed a convenient fhelter from the torrid rays of an Italian fun. The fhearing of the trees, contributed alfo to thicken their fhade, and to render them more commodious for this purpofe ; though, I confefs, it was not necefifary, for this end, that they fhould be clipped into awkward imitations of animals, &c. which, it is furpriziog a man of the tafle of Pliny could approve. The fence to the garden was, in Pliny’s Villa, con¬ cealed by trees, an improvement on the modern tafle referred to ; a long range of bare brick walling having been often efleemed an object of beauty or magnificence. Fountains, likewife, and jets d’eau, however ufelefs, and therefore abfurd and unnatural, in Great Britain and Holland, may dill be iti per¬ fectly good tafle in Italy. The difperfion of moiflure cools the air, by the evaporation it pro¬ duces j of gardening among the Ancients. 319 duces; and the very murmur of the falling of water, gives the idea of coolnefs, by afibciation of fenfations. They feem here to have been difpofed with judgment, fome of them being fituated near the alcove, and refting places, as a refremment to thole fatigued with heat, and exercife ; and others, difperled through the grais, not to caufe a foolifh furprife, and to endanger the health of thofe palling that way, by wetting their cloaths, but to water the trees, cool the ground, and refrelh the verdure ; circumftances indifpenfable to the beauty of the feenery and profpeft, in a hot climate. The fame apology may, I think, be made for the regularity of the walks, in the Hippodrome, and the minute parts and divifions, in which it was difpofed. It is probable, the extent of ground itfelf was not large. Diftant walks would be fatiguing in an Italian fummer, and would be too much trouble and expence to keep as clofeiy fhaded, as would render them fufficiently agreeable. They were, therefore, in a manner, compelled to make as much as pofiible, out of the fpace of ground; which they accomplished, by dividing it into as many walks and paths as pofllble. The parterre, likewife, parted into beds of various fhapes, was neceflary for flowers, which were highly valued in warm climates for their perfume, but do not thrive, unlefs kept diflindt and 3 20 Dr. Falconer on the Style and Fajie and free from the proximity of other trees, or plants. It is remarkable here, that the tafte of the author, for the beauties of nature, breaks out among his defcription of the moll artificial ornaments. Immediately after defcribing the fence of the garden, covered with graduated box trees, he adds, that the adjoining meadow, was as beautiful by nature, as the garden had been rendered by art ■, and, in another place, mentions the contrail of the beauties of rural nature, with thofe of art, * as one of the chief ornaments of his garden. The fame apology that has been made for the ftyle, in which Pliny’s gardens were laid out, is applicable to the eaftern gardens in general, and holds, (till more ftrongly, as the heat becomes more con- ftant and intenfe. We may farther obferve, that this mode fuits the difpofition of the eaftern people, in many other refpedls. The regularity * Juvenal appears to have poflefied a good tafte in gardening, and laying out grounds, from what he fays of the artificial grottoes at Aricinum, and the attempt to ornament the water, by fubftituting marble, in place of its natural boundary of herbage. In Vallem Egeriaj defcendimus, et fpeluncas Diffimiles veris : quanto prteftantius effet Numcn aqute, viridi ft margine clauderet undas Herba, nec ingenuum violarent marmora tophum ? Juvenal. Satyr. III. L. 17. and of gardening among the Ancients. 321 and formality of their manner of living, and manners, correfponds with their tafte for regular figures, and uniformity of appearance, in the laying out of ground. It may not, perhaps, be too great a refinement to remark, that fuch a tafte is conformable alfo to a defpotic govern¬ ment, which is jealous of all innovations, and, of courfe, affords no opportunity for exertions of genius, in any capacity. It is worthy of ob- fervation, that the regular tafte, above referred to, prevailed in this country, at a time when our fyftem of manners, drefs, and behaviour was extremely ceremonious, formal, and re- ferved, and approaching to thofe of the eaftern countries. As this ftiffnefs wore off, the tafte of the people improved. Shakefpeare was no longer cenfured for inattention to dramatic ftrift- nefs; the turgid, but regular bombaft of Black- more, fell into difrepute and ridicule, and a more eafy and natural ftyle was adopted, both in fentiment and writing. The general method of laying out grounds, in this country, feems at prefent to be very rational. Natural beauties, or refemblances thereof, are chiefly attempted ; which are the more proper, as being more conformable to the climate and fituacion of the country, and difpofition of the people, who are beft pleafed with great and fublime objects, which are to be found only in nature. The clofe walk, how- Vol. I. Y ever 322 Dr. Falconer on the Style and Tafte ever delightful in Italy, or Perfia, is here judicioufly exchanged for the open grove, and the moiflure of grafs for gravel. The tonfure of trees is alfo laid afide not only as impairing their beauty, but alfo, as thickening their (hade, more than would be neceffary or agreeable, where a free intercourfe of air is fo requifite, to difpel damps and exhalations. Fountains, on the fame account, are laid afide, and we are content with the natural current of dreams, which exhale lefs moifture, [and produce lefs cold, than water fpouted into the air by the fantaftic, but lefs beautiful difbri bution of it by a jet d’eau; The gardens, or pleafure grounds, in our country, are likewife very properly of much larger extent, than thofe in hot climates. Pleafure, in the latter, is always combined with fomewhat of indolence and inaction ; in the former, it is connected with exercife and activity. A large l'cope of ground, therefore, that afforded opportunity for the latter, would be more con¬ formable to the genius of the people, as well as to the climate in which the luxurious indul¬ gence, fo delightful when the heat is intenfe, could very feldom be fafely pradlifed. On the whole, I am inclined to believe, that notwith- ftanding our want of the ornaments proper for hot climates, in our gardens and pleafure grounds. Great Britain is capable of afford¬ ing more real and genuine beauty in views of this of gardening among the Ancients. 323 this kind, than is, perhaps, any where elfe to be met with. The fine and regular verdure, which always clothes both the earth and the trees j the variety of the herbage, and the fize to which oaks and other foreft trees, congenial to the country, will arrive, impart a beauty and magnificence to our profpeXs, and afford opportunities for the judicious interpofition of art, far fuperior to what is to be met with, where thefe advantages do not occur. We are ftruck with claffic defcriptions, and affected by the circumftances which, by their con¬ nexion, they recall to the memory ; but fetting thefe afide, I make no doubt, a grove of knglifh oaks would be a more beautiful, as w'ell as a more magnificent objeX, than “ the olive grove of Academe,” or that of plane trees in the Athenian L yceum. After all, it is poffible to err in too clofely following Nature, as it is in neglecting her. There are beauties of the artificial kind, as well as natural, which are proper to be introduced into fcenes of this kind. Statues, buildings, and other ornaments, in good tafte, and well executed, may unite with great propriety with natural objeXs, and heighten their effeX. I do not fpeak of thefe ornaments, as to any particular beauties they may individually poffels, but merely as coinciding with the general effeX, and nature of the profpeX. They aie, however, to Y 2 be 3 24 Dr. Falconer on the Style and Tajle, &c. be employed cautioufty, fince, if injudicioufly, or even too frequently introduced, they give an air of frivoloufnefs and affectation to the whole, which renders it an object of contempt and ridicule, rather than off admiration. More, I think, might be faid againft ex¬ cluding parterres of flowers, which were fo con- ftant attendants upon the old gardens, and fo rarely feen at prefent. We all know, that feve- ral kinds of flowers are exquifitely beautiful, and that their beauty and perfection depends on certain circumftances, relative to their cul¬ ture. Great care is necefiarv, and a feparation from other plants, both of which fuggeft the parterre as the moll proper and convenient way of producing them. I confefs, parterre divifions poflefs no remarkable beauties in themfelves, but I think, at the fame time, that they have no¬ thing fo fhocking, to the molt delicate tafle, that fhould hinder their being employed, when they are the harbingers of fuch beautiful productions of nature. A fquare, or an oblong border, has nothing obvioufly ablurd or difguft- ing in its appearance ; and as to its being artificial, it may be faid in defence of it, that it is not an imitation of any thing in nature, nor meant to be fo, but folely calculated for utility, as an inftrument neceflary to the production of beauty ; and, confidered in this view, we might, with equal reafon, object againft a houfe, as an . unnatural. Mr. White on the Regeneration 325 unnatural, and therefore, an improper object, as againft the divifions of a flower parterre. I grant, indeed, that they have been whimfi- cally, and often abfurdly arranged, and falhioned; but fuch I do not here defend. I only maintain the caufe of parterres, on account of the beau¬ ties, which they are neceflary to produce: not of any they themfelves pofiefs. ~ ~ ‘ ■ 1 1 IH Mini! ii ™ - — On the Regeneration of Animal Substances. By Charles White, Efq. F. R. S. &V. Read December 18, 1782. • f • r ( • ,.r . r"jP H E great Author of the creation has en¬ dowed the animal world with a wonderful power of repairing and recruiting its various compound machines, and not only filling up and making good loft fubftances, but in fome inftances, of even totally regenerating parts ; but we muft not from hence accufe him of partiality, in not doing it in every inftance ; for the further we carry our refearches into the fecrets of Nature, the more we (hall be convinced of the great and unbounded wifdom of God, and of the extraordinary refources he has placed in her pofteflion j V 3 --The 326 Mr. White on the Regeneration ....... “ The firft Almighty caufe Atts not by partial, but by general laws. Pope’s Eflay on Man; The Deity has drawn the line, has fixed the limits, and has faid to Nature, hither (halt thou go, and no further. If this order does not appear to us to be uniformly preferved, we muft not conclude that it is not really fo, but that it is owing to our {lender capacities, that we are unable to trace his hand through all his ways, “ See and confefs, one comfort dill mud rife, “ ’Tis this, tho’ man’s a fool, yet God is wife. ” Loc. citat'. The ancients knew that a frefh broken bone vvould unite by a callus, that wounds of the flefli would fill up by what is called incarnation, and would be healed over with {kin, by what is called cicatrization. But all vain glorious boafting man muft not from hence pretend, that he can make a Angle fibre grow : this is the aft of Nature only- The ableft furgeon living, can do no more than afiift her, remove the prefent obftacles, and prevent others being thrown in her way. “ Yes Nature’s road mud ever be preferr’d ; “ Reafon is here no guide, but dill a guard.” Loc. citat. The moderns have carried this matter further. I did myfelf the honour to lay before the Boyal Society, a remarkable cafe of a broken • ' - bone, of Animal Sub/lances* 32 7 bone, which was inferted in the Philofophical Tranfa&ions, vol. LI. part the fecond, for the year 1760, in which Nature was difappointed of her ufual method of throwing out a callus, and after more than fix months had elapfed, without an union j when all obftacles were re¬ moved, by cutting off the ends of the bone, the offeous matter fliot out as freely as if it had been from a recent frafture, and the broken bone was perfe&ly united. Since the publication of this cafe, a great number of fimilar ones have occurred both to myfelf and others, which incon- teftably prove, that though Nature is difappointed in her work, even for a long time together, yet, when all obftruftions are removed, flae is ever ready to exert herfelf. In the year 1768, I cut off the upper head of the os humeri of Edmund Poilit, aged fourteen, whofe cafe is related in the LIX. volume of the Philofophical Tranfaftions. This was much corroded with matter, part of it confumed, and followed by an exfoliation of a large piece of the whole fubftance of the bone j yet the head neck, and part of the body of it were a&ually regene¬ rated, and the entire ufe of the joint preferved. Mr. William Johnfton, furgeon at Dumfries, has given 11s a cafe in the Edinburgh Medical JSflays, * where the whole tibia, the principal • Vol. V. p. 452. Y 4 328 M. White on the Regeneration bone of the leg, being caft off by exfoliation, was regenerated, and was, in a little time, as ufeful as the old one. Mr. Le Cat mentions a cafe in the Philofo- phical Tranfactions,* of a child of three years old, from whom he extrafled the entire tibia, exoftofed and carious in its whole extent, between the two articulations} which had remained found: this great deficiency of bony fubftance was entirely fupplied again by nature, and the patient re¬ gained a new tibia, much firmer than that which he had loft. In the fame place, he relates the cafe of an adult perfon where he took out three inches and ten lines of the bone of the upper arm, which was followed by a regeneration of bony matter. In this cafe the form of the bone, as well as its natural length, was preferved, ft Both in compound luxations and in caries,;}; the heads of the principal bones, and confider- able portions of their bodies have been fawn off, and regenerated, fuch as the tibia, fibula, humerus, radius, ulna, thumb, and finger} the bones were little or no fhorter, and new joints were formed, with fuch a degree of motion, that the patients found little or no inconve¬ nience, and were able to follow their bufinefs as well as ever. * Vol. LVI. p. 270. + Gooch’s Cafes, vol. I. p. 323. } Phil. Tranf. vol. LIX. p. 39. Dr. of Animal Suhjlances. 329 Dr. Hunter, in his reflections on cutting the fymphyfis of the pubis,* fays, Cf as to any pro¬ perty which living ligaments poflfefsof ftretching, under violence, permitting diflocations without laceration, I have long taught, that though a very general opinion, it feems not to have been founded in obfervation. Ligaments will not allow of diflocations in dead bodies without la¬ ceration ; and elaflicity to any degree either in ligaments or tendons, would ill agree with their ufe in living bodies, which is to keep the parts ftrongly together; and accordingly, fince this opinion has routed attention and examination, every cafe of a recent diflocation that I have known examined, has been found complicated with a laceration of the ligaments.” Mr. John Hunter, in his Chirurgical Leflures goes further, and lays, “ that a luxated bone not reduced, by prefling againft another bone, digs a cavity for itfelf, which gets cartilaginous edges and cartilage on all itsfurface; nay, a fynovial gland fecreting fynovia, and a new joint is fet up. In the fraCture of a bone, though the parts be thrown at fome diftance, a callus is formed, which unites them. It is agreeable to the fame uniformity of operation, that when a bone is broken, which v/as originally formed in a nidus of cartilage, the renovated bone alfo forms in cartilage; while a bone, originally formed in * Letter to Dr. Vaughan, p. 86. membrane, 330 Mr. White on the Regeneration membrane, when it is partially deftroyed, is re¬ produced in membrane.” All furgeons muft have cbferved this, that in old diflocations which have not been reduced, there is always fome degree of motion more or lefs in the diflocated joint, except it has been complicated with a fra&ure. In a converfation I lately had with Dr. Monro, he confirmed Dr. Hunter’s opinion, with the relation of the two following difle&ions. He immerfea a dead child in warm water, till it was perfectly foft and flexible; he then diflocated the ftioulder. Upon difledling the parts, he found the capfular ligament lacerated. A man in Edinburgh was killed by a fall from a horfe, and his fhoulder was at the fame time diflocated Upon difieftion in this cafe allb, he found the capfuiar ligament lacerated. Dr. Monro told me, he did not in the leaf!;, doubt what Mr. John Hunter had advanced on this fubjedt ; and informed me, that he had a cafe, laft winter, of a patient who had an exfolia¬ tion of half the lower jaw, particularly of the whole condyle on the left fide ; the loft part was regenerated, he had the entire ufe of the jaw, and the joint was as perfect as on the other fide, except being a little fuller, and attended with a trifling degree of hardnefs. I had the fatisfac- tion of feeing the exfoliated bone amongft his valuable collection, and found the head of the bone perfect, except a little carious on one fide. of Animal Subflances. 33 1 In the fame collection I faw an aftragalus, (one of the bones of the foot) which had come away entire, and the patient, as Mr- Fyfe informed me, had the perfeCl ufe of his foot and ancle. I likewife faw in the fame place, a thigh bone, which had been broken, the ends had not co- aptated, but had overfhot each other three inches, and were perfectly united- Cafes of this fort I have often feen, and have now a thigh bone by me, united in the fame manner ; but in that bone in the poffeflion of Dr. Monro, there is this circumftance, which I had never before obferved, (hat the fides of the bone had not approximated each other, but in one point. The callus had fhot out in fuch a manner as to form cancelli, and the void fpace had all the appearance of having contained a medullary fub- ftance. Dr. Monro told me he had a whole chefl: of regenerated bones in his poffeflion. He like¬ wife deferibed to me the following experiment, he had made. He laid open the abdomen of a pig for feveral inches, in fuch a manner, that the inteftines protruded; which convinced him, that all the integuments were completely divided. He then reduced the inteflines, and fewed up the wound. After it was perfectly united, he killed the pig. He then made incifions above and below, and on one fide of the cicatrix ; after which, he injefted the aorta; and, though there was not a poflibility 33 2 Mr' White on the Regeneration of the inje&ion entering but on one fide of the cicatrix, yet the arteries, on both Tides, were perfectly injedted, a convincing proof, that they muft have regenerated, for it cannot be fup- pofed that the mouths of fo many fmall veffels could poffibly have coaptated, fo as to have con¬ tinued the circulation through the cicatrix. I had the fatisfadlion of feeing both the pre¬ paration and an engraving from it, which, it is hoped, the dodlor will favour the public with, together with the feveral other valuable experi¬ ments.*' Teeth have regenerated in every period of life. Mr. Thornton, a very ingenious medical fludent at Edinburgh, informed me, that he had a found tooth drawn by miftake fome years ago, which as foon as he found out he immediately replaced. It grew again, and was as good in every refpedl as any other. But in procefs of time, this tooth began to decay, and give him pain, which became exquifite whenever the tooth was touched, even in the flightefl manner. He therefore had it drawn, and one of the fangs was found to be carious. From this it is very evi¬ dent, that nerves will grow again, after being difunited. * Since this paper was read before the Society, Dr. Monro has publifhed his ufeful and ingenious obfervations on the nervous fyftem, with the engravings of thefe preparations. Vid. Tab. XLVI. and Tab. XL VII. Mr, JP '/ate HI /dr /nr .t/rti/.i fAe yi/ace u/drrr /dr ,*/}/. '-/ try / // ts//rr). cf Animal Subjlances. 33 3 Mr. Cruikfhanks, in his Letter to Mr. Clare, p. 87, fays, “ Not only the brain, but the nerves alfo, appear to have other properties than we have hitherto apprehended. Some years ago, I de- monftrated, by experiments on living animals, that nerves divided unite again ; and that when portions had been cut out, they were regene¬ rated : in both inftances the animals perfe&ly recovered. Thefe experiments I hope foon to be able to lay before the public ; meantime I am happy to find, they have been recently con¬ firmed by fo great authority, as the Abbe Mon¬ tana, to whom I communicated my difcovery, and fhewed my preparations of united and rege¬ nerated nerves.”* Mr. Gooch has given us a remarkable cafe of the cuticle and nails, f being frequently caft off and regenerated, particularly in the feet and hands, fometimes twice in a year. Thofe of the hands were caft off whole, anc[ we are furnifhed with an engraving of a pair of thefe cuticular gloves. * Dr. Monro, in the work before mentioned, has given a plate (Vid. Tab. XIV.) to lhew the regeneration of the fciatic nerves, which had been divided in living frogs, and dilfecled twelve months after. The regenerated parts are of a darker colour than the original nerves, which proves, that there was not a mere coaptation of the divided ends. f Philofophical Tranfaftion?, vol. LIX. p. 281. There 334 A//'. White on the Regeneration There is another fimilar cafe related by Mr. Latham, * but with this difference, that this patient did not caft her nails. By performing the operation for the cure of the aneurifm, feveral inches of the trunks of the principal arteries, both of the arm and the thigh, have been deftroyed ; yet in a few days, the cir¬ culation through the whole limb, has been car¬ ried on, as perfectly, as before the operation. The method, which nature has taken for accom- plifhing this bufinefs, may be feen by an engrav¬ ing f from a preparation which I made, and which Dr. Hunter has done me the honour to give a place amongft his valuable collection. There is a very extraordinary hiftory of a glans penis regenerated after amputation, related by Mr. Jamifon, furgeon at Kello, and inferted in the Edinburgh Medical Effays.ff; The young man was married, in that country, about two years after the cure, has had two children, and complains not of want or defedt even in fenfatioi^. Crabs and lobfters caft their fiiells, both from their bodies, less, and claws, and even caft their ftomachs, generally every year, which are im¬ mediately regenerated. The fhell is renewed by a fluid, which they ejedt •, and it inverts their whole body, growing hard and dry, in a fhorr * Philof. Tranfa&ions vol. LX. p. 451. f See my Cafes in Surgery, p. 140. J Vol. VI. p. 434. time. of Animal Subftances. time, and becoming as ftrong a ftiell, as that which they had before. But, what is more ex¬ traordinary, they frequently lofe a leg or a claw in their combats, which are very frequent and furious : the loft part will be regenerated in about three weeks, and be almoft of its natural fize. Brown, in his hiftory of Jamaica, informs us, that the claw of the violet crab, in feizing its food, catches fuch an hold, that the animal lofes its limb foon'er than its grafp ; the claw conti¬ nuing its retentive power for above a minute, whilft the crab is moving off. In the polypus, not only young ones will grow out like warts from different parts of the body, drop off, live, and grow ; but you may cut them into a thoufand pieces, and turn them infide out, and they will ftill live, and do well ; this is ac¬ counted for by its whole body being compofed of ftomach and parts of generation. The latter not being peculiar organs, but merely particles of the ftomach, which are its body, each part of which has the power of producing the like. Its food is converted into chyle, in the ftomach ; ablorbents opening into the part, take up the chyle, and thefe, at fome diftance from their mouths, become arteries. If the Affinia JJrtica Marina , Animal flower , or Sea Anemone be cut through the middle, either tranfverfely or longitudinally, both parts will furvive the operation. Nay further, if you rear them 3 Mr. White on the Regeneration them from the rock orfliell, to which they gene¬ rally adhere, and a fhred is left behind, it will become a frefh and perfect animal. The earth-worm and fea-worm will live after being cut in two ; but, what is mod furprizing, the fmall red headed earth-worm, being cut in two, both extremities furvive the operation ; the head produces a tail, with the anus, the intef- tines, the anular mufcles, and the prickly beards : the tail on the other hand, is feen to fhoot forth the noble organs, and, in lefs than three monthsj fends forth a head, heart, together with all the apparatus and indruments of generation. Thefe parts, as may be eafily fuppofed, were produced much flower than the former; a new head taking nearly three months for its completion ; a new tail (hooting forth in lefs than as many weeks. The lizard, and alfo the viper cad their (kin, and fome fay their tail, and even their eyes; and the lea (lug is faid to cad its head ; all which are regenerated. The buck cads its horns every fpring, which are reproduced in a few months. But if he be cadrated when young, he will have no horns at all, or fmall buds only, and thofe foft to the touch, like velvet, and void of firmnefs. Dr. Ruffel informs us, that he had two old bucks cadrated at the end of February, and their horns dropped off, the twenty-fird of March following ; fo that the fall of their horns was anticipated five ' of Animal Sub/lances. 337 five weeks at leaff. Thefe horns were renewed, next year, and were longer than the buck’s of the fame age; but the palms, or collateral branches, were lefs and fhorter, and neither the velvet of the horns, nor the horns themfelves were ever call afterwards. I fhall now beg leave to lay before the Society, two cafes, that have not been publifhed, in order to prove ftill further the dodtrine I have been endeavouring to eftablifh. Roger Nuttal, of Bury, twenty years of age, was admitted an in-patient of the Manchefter infirmary under my care, on the 23d of January, 1775, f°r a tumor on his back- Upon dripping off his Ihirt, to (hew me the tumor, 1 was (truck with a very Angular appearance of a (tump of the right humerus. 1 alk^d him, if he was born with it in that form, or whether his arm had been taken off. He informed me, that Mr. Kay Allen had taken his arm off clofe to the fnoulder, when he was but four years old, and that the (lump was grown again to that length, which feemed to be about eight inches longer than he defcribed it to have been, immediately afcer the amputation. I enquired both of his mother, and Mr. Allen, as to the truth of his relation, which they both confirmed ; and the latter, with this addition, that the arm was taken off, as near the Ihoulder, as the application of the tournequet would permit. The bone had Yor.. I. Z every 338 M. White on the Regeneration every degree of firmnefs, and folidity, and the ftump was warm to the extreme point, and he informed me, was perfectly fenfible when touched. Along with this, you will receive a drawing of the young man, and the appearance which the flump made, executed by your in¬ genious Secretary Mr. Bew, at the time the patient was at the Infirmary. Some years ago, 1 delivered a lady of rank of a fine boy, who had two thumbs upon one hand, or rather, a thumb double from the fir ft joint, the outer one rather lefs.than the other, ‘ each part having a perfect nail. When he was about three years old, I was defired to take off the leffer one, which I did ; but to my great aftonifhment it grew again, and along with it, the nail. The family afterwards went to refide in London, where his father (hewed it to that excellent operator, William Bromfield, Eiq. fur- aeon to the Queen’s houfehold, who faid, he fuppofed that Mr. White, being afraid of damaging the joint, had not taken it wholly out, but he would diffed it out entirely, and then it would not return. He accordingly executed the plan, he had defcribed, with great dexterity, and turned the ball fairly out of the focket; notwithftanding this, it grew again, a fiefii nail was formed, and the thumb remains in this ftate. The conclufions I would draw from thefe fads, are, that, in the human fpecies, not only fiefh. 339 of Animal Subjlances. flefh, fkin, and bones, may be regenerated, but membranes, ligaments, cartilages, glands, blood veflels, and even nerves; and this for the wifeft purpofes, that every part may be repaired in its own kind, and in fome manner reftored by the coagulable lymph, which is poured out, and becomes vafcular, and forms organized parts. By this wife provifion of nature, the many accidents to which we are continually expofed, are often more compleatly repaired, than arc could be able to accomplish- In fome animals, we fee this regenerating and living principle, carried ftill to a much greater length, where not only whole limbs, but even the more noble organs are reproduced. The ftudy of nature is not only engaging and pleafant to a high degree, but it infpires us with fuch a refpedl and admiration of the Almighty Being, that it is impofTible either for a Naturalift or an Anatomift to be an Atheift. They have conftantly before their eyes fo many wonderful living machines, differently wrought, yet fo compleatly fafhioned, and all tending to one great point, the preservation of themfelves and their fpecies ; in which, there are fo many orders of veffels, one depending upon another, yet compfeat in themfelves ; capable of repairing injuries they may fuftain, and even of reftoring loft fubftances j that men, who daily fee fuch obje&s, muft be con- Z 2 vinced. 340 Mr. White on the Regeneration, &c. vinced, that thcfe admirable fabrics cannot have proceeded from chance, but muft have been the work of an Omnipotent Creator, who has formed them with the mod perfect wifdom, and attention to their feveral intereds and fituations ; “ And fpite of pride, in erring reafon’s fpite, “ One truth is clear. Whatever is, is right.” Pope’s ElTay on Man. P. S. Mr. Parke, of Liverpool, in a Pamphlet he has lately publifhed, intitled, “An account of a new Method of treating Difeafes of the Joints of the Knee and Elbow,” has given us a cafe, which fell under the care of Mr. Wain- man, of Skipton in Craven ; and, as it is perhaps the fulled: confirmation, that can pofiibly happen, of the regeneration, of not only the head of a bone, but of the capfular ligtiment, and fynovial glands, and even every appendage of a joint, it may, per¬ haps, be thought to be a proper fupplement to this paper. 1 fhall therefore give the cafe in Mr. Wainman’s own words. He defcribes it, as “ a violent luxation of the cubitus, occafioned by a fall from a horfe in full fpeed, which forced the os humeri, through the common integuments, a confiderable length into the ground, and the bone was quite denudated.” He adds, “There was not a pofllbility of reducing it, and I thought it mod eligible to take off the limb, which On Hunting , Shooting , &c, 341 which the family objected to. I called in Dr. Taylor, who was of my opinion ; but it would not be complied with. We then judged it bed to faw off the os humeri, which I did, about an inch above the finus that receives the olecranon. I then placed the arm, in fuch a pofition, as I thought would be mod advanta¬ geous, prognofticating, that an anchylofis would enfue, in which 1 was miftaken j the perfon is now living, and can perform all the motions of the joint, which is as flexible, as if nothing had ever been amifs.” BP An Essay on /^Diversions ^/Hunting, Shoot¬ ing, Fishing, &c. confidered as compatible with Humanity. Read January 15, 1783. \X7'HILST the general conftitution of fociety remains, fuch as that no man, however obfeure, can be confidered as unconnected with the reft of his fpecies; whilft, in every fituation, our conduCt and fentiments, in fome degree, invariably produce an influence on thofe of others; no inquiry, which refpeCts the genuine piotive of fuch actions, as are frequently com- Z 3 mitted. 342 On Hunting , Shooting , &c. mitted, whether their objeCt be, the pleafure of the individual, or the benefit of fociety, ought to be regarded as unworthy of ferious attention. The prevailing, though much to be lamented propenfity of individuals, to juftify their own failings, by the detection of fimilar weaknefs in fuperior characters, renders fuch an inveftigation the more neceffary •, and if, in the profecution thereof, it fhould appear, that unworthy motives have been erroneoufly afcribed to fome aCtions, which may be traced to a different fource ; or that from the peculiar conftitution of human nature, fome weakneffes are infeparable from kindred excellence; fuch difeoveries would prove ufeful acquifitions to our fund of knowledge ; they would tend to reCtify the miftaken con¬ ceptions of the ignorant, or to improve the diferiminating faculty in t'nofe, who are moft eafily feduced by the influence of exam; le. In reafoning concerning a fpecies of animals, which we fuppofe, governed by a principle fuperior to that of inftinCt, it is defirable to trace a confiftency between fentiments and aClions, as on this alone, our claim to virtue and to reafon feems founded. On a fuperficial furvey, however, fuch a confiftency appears but ill fupported in the conduCt of thofe, who, whilft they difeharge all the moral duties, and in an efpecial manner, praCtife the virtues of hofpitality, humanity, and benevolence, are yet On Hunting , Shooting , &c. 343 yet capable of difcovering confiderable pleafure from thofe amufements, the profeflfed objed of which is, to deprive of life an innocent animal, unacquainted with thofe defires which fpring from luxury, and afking no more of the bounties of our common Parent, than is neceflfary to its own fupport and exiftence. To be prompted to fuch adions, not from any neceflity ro gratify the wants of nature, but folely from the defire of amufement, appears, at firft view, repugnant to every principle of humanity, and feems more charaderiftic of the ferocity of a favage, than of the clemency of a civilized being. What then fhall we conclude! Are there no charaders exempt from incon- fiftency ? Or is virtue an empty name, without precife meaning ? The mind (brinks with averfion from either conclufion. Let us there¬ fore take a more intimate view of the motives to fuch adions, and, perhaps, they may admit a folution, Kfs repugnant to our feelings. From the attributes juftly afcribed to the benevolent Author of our exiftence, we may fafely conclude, that every propenfity, with which the human mind is endowed, is not only neceflfary, but even conducive to our happinefs, whilft indulged in a proper degree. This is not more true, of the mild and gentle difpo- fitions, thofe which feern to be houriftied by the £t milk of human kindnefs,” than of our more Z 4 adive 344 Oh Hunting , Shooting , &V. a&ive and lively propenfities, thofe which excite to the moft vigorous and toilfome exertions. The love of fame gives a glow, an enthufiafm, to the feelings of the poffeiTor, when ci'cum- fcribed within proper limits, which leads him to combat fatigue and danger, to triumph over toil and difficulty, and fmile amidft the anguifh of pain and death. Yet the fame paffion, uncon- troled by reafon, hath prompted the mod abject fubmiffion, the moft licentious excefs; it hath produced the moft baneful dilorders in fociety, and, inftead of deifying human nature, hath made earth the abode of thofe fpirits, which the poets have afligned to the confines of Tartarus. We may remark the fame, of every other difpofition of the human mind, in the exercife of which, the excefs, or the deficiency alone is injurious; but there is none, the limited ufe ■whereof, doth not contribute to the happinefs of the individual, and the good of fociety. Not to wander, however, too far from our fubjedt, let us, for a moment, confider man in a date of nature, whilft he is yet unacquainted with the bleffings which fpring from civilization, or has conceived an idea of pleafure, fuperior to that which arifes from the gratification of his appetites. His own perlonal fafety, with that of thofe who are dependent on his prote<51ion, joined to the daily cravings of nature, firft dictate the neceftity of waging war with many of thofe animals* On Hunting, Shooting, &c. 345 animals, with whom he hath hitherto lived “joint tenant of the (hade.” Perhaps thefe neceftities, however, would not always be fufficient to overcome that love of eafe, whitft is fo natural to a ftate, wherein men feem only a fmall degree elevated above the rank of brutes. Perhaps, if other inducements were not fupperadded, he would not be ftudious to plan, bold to refolve, and adtive to engage in thofe dangers and enterprizes, without which, he mull frequently be deprived of this fpecies of food, and obliged to fubftitute others, more eafily gained, but lefs adapted to the health and vigour of the animal ceconomy. Without in¬ filling too much on thefe prefumptive reafons, it is certainly a kind provifion in the conftitution of man, that thofe exertions, which are dictated by neceffity, fhould alfo be infpired by inclina¬ tion ; and that, whilft his employment is made fubfervient to the means of his exiltence, it fhould alfo become a principal inftrument of his pleafures. Thefe remarks, however, principally apply to the rude and favage ftate of man, which, happily for fociety, is now almoft unknown. There is no longer a neceffity for an individual to be fiimfelf the executioner of the animal deftined to his fubfiftence ; yet, as hunting, (hooting, angling, &c. are dill purfued, with as much avidity as formerly, it is necefiary, if we propofe to 34 6 On Huntings Shooting, &c. tojuftify thefe diverfions, to attempt it on prin¬ ciples, which apply to a ftate, wherein men are humanized, by laws and government, and by the refining influence of arts, fciences, and re¬ ligion. It will be generally allowed, that the health and vigour of the intellectual, as well as of the corporeal fyftem, require frequent exercife, and that their very exiftence almofl: depends upon it. It is alfo pretty evident, that to induce fuch a degree of exertion as vyill promote thefe ends, there mult be fomething to ftimulate and incite ; the final caufe being too remote an objeCt. Hence, every amufement which exercifes the powers and faculties of man, if not improperly expenfive, nor necefiarily attended with a negleCt of more noble and important purfuits, is, in this point of view, not only not cenfurable, but meritorious. Such, however, is the conftitution of man, that health alone will not fatisfy his afpirations after happinefs •, and it is clear, that exer¬ cife is not more necefiary to the perfe&ion of his faculties, than to the promotion of his pleafures. In the words of an elegant writer, equally diftinguifhed for depth of thought, and benevolence of character.* “ Labour is the chief ingredient of the felicity to which man * See the Stoic, Hume’s Eflays. afpires, On Hunting , Shooting , &c. 347 afpires, and all his enjoyments foon become in- fipid and didafleful, when not acquired by fa¬ tigue and induftry. See the hardy hunters rife from their downy couches, fhake off the (lum¬ bers which dill weigh down their heavy eye lids, and ere Aurora has yet covered the earth with her flaming mantle, haden to the fored. They have behind, in their own houfes, and in the neighbouring plains, animals of every kind, whofe fle(h furnifhes the mod delicious fire, and which offer themfelves to the fatal ftroke. La¬ borious man difdains fo eafy a purchafe. He feeks for a prey, which hides itfelf from his fearch, or flies from his purfuit, or defends itfelf from his violence. Having exerted in the chafe, every paflion of the mind, and every member of the body, he then finds the charms of repofe, and with joy compares its pleafures to thofe of his engaging labours.” If exercife, then, be neceffary to the health and well-being of man 3 if it be alfo neceffary to thofe pleafures, for which nature hath infpired him with the third ; and if hunting, (hooting and fifhing furnifh dimulating motives, which, in their abfence, it would not be eafy to fupply; thefe diverfions may be edeemed both innocent and virtuous, whild confidered folely with re- fpetfl to the agentj and it remains only to examine, how far, to the united motives of pleafure and advantage to man, other reafons . may 348 0« Hunting , Shooting , &V. may be added, in juftification of actions, which refpedt the lives and happinefs of the brute creation. Man, as lord of the creation, regards every Other animal as intended for his necefiary ufe, and fubfervient to his reafonable purpofes. This prerogative feems to have been intended for him in the original conftitution of things ; and it is fully evident, that the proper exercife of it, is not more favourable to his own, than to the general good. Of fome animals he prolongs the lives, and provides for the fupport, to make them con¬ ducive to his own convenience. Others, doomed to contribute to his fuftenance, are cut off ere they attain maturity.* Even if it were not expedient to facrifice thefe to the indifpenfible wants of man, necejfity would equally prompt him to their deftrudiion ; fince, if they were left uninterruptedly to provide for their own fupport, and to propagate their fpecies, their increafe would foon be incompatible with his exiftence, and probably, with that of their own. It would, perhaps, be too hafty an affertion, to affirm, that death to brutes is no evil. We are not competent to determine, whether their evidence, like our own, may not extend to fome * In the laft clafs may be enumerated moll of the vi&im? to the diverfions we fpeak of. future ; \ t c On Hunting) Shooting , &c. 549 » future mode of being, or whether the prefent limited fphere is all in which they are interefted! On fo fpeculative a queftion, little could be advanced with precifion ; nor is it neceffary for the inveftigation of the fubjeCt before us. If we may be allowed to reafon only from what we know, it may lafely be conjectured, that death to brutes is no pofitive evil ; we have no reafon to believe, they are indued with the gift of forefight, and therefore, even admitting that with them the pleafures of life exceed its pains and its cares, in terminating their exiftence, they only fuffer a privation of pleafure. Though the tie of natural affeCtion is, per¬ haps, not lefs ftrong in brutes, than in the human fpecies, yet it is often necefiarily diftolved, and of much Ihorter continuance. It is alfo to be remembered, that, on the prefent plan of pur- fuing thefe diverfions, fuch a regard is had to the circumftances and fituation of animals, that no helplefs, feeble progeny is left to bewail the lofs of an affeCt ion ate parent ; or, from the want of its providence and protection, to perifh from expofure to rapacious animals, or the more cruel attacks of want and famine. The fate of an individual may, therefore, be confidered as unconnected with that of any of its fpecies; and if it be allowed, that an untimely period of its exiftence is not to it any evil, the mode of its fuffering 350 On Hunting , Shooting , &c. buffering death, will not only be no objection to the diverfions we fpeak of, but will furnifh rea- fons of confiderable weight in their favour. The tie of natural affection, it hath already been obferved, is not weak among# brute ani¬ mals; but it may be remarked, that though in many cafes it is fo ftrong in parents towards their progeny, the refle&ed attachment feems to fubfift, only whilfl the young offspring are in¬ capable of providing for themfelves. When they attain to maturity, the connection is, in mod cafes, diffolved, and the relationfhip forgotten. How pitiable then mull be the fituation of that animal, whom age, with its attendants, weaknefs and difeafe, hath reduced to a feeble and lielp- lefs ftate, incapable of providing for itfelf the neceffary fubfiflence, a prey to continual appre- henfion from thofe animals whofe attacks it is unable to fly from or repel ; and at length lan- guifhing to the period of its exiftence, confumed by famine and wafted by difeafe ? Compare with the fate of fuch an animal, that of the timid hare. She meets the opening morn in health and vigour, and with playful frolic wantons on yon upland hill, enlivened by the beams of the rifingfun. No feeble pulfe, or languid eye, in¬ dicate a dilordered frame; no anticipation of her approaching fate infpires her with apprenenfion. All is gay and lively, like the profpeCl around her. On a iudden, however, the fcene is changed, the On Hunting , Shooting , &c. 351 the echoing of the horn refounds from the adja¬ cent valley, and the cry of the deep-mouthed hounds thunders towards the hills. She becomes motionlefs with fear, when a fecond alarm roufes her from her trance fhe flies, and with eager fleps feems to outftrip the winds. Men, horfes, and dogs inftantly join in the chace, and the foreft echoes to the wild uproar. The hare doubles — the fwiftnefs of her fpeed abates — fear, more than fatfgue, retards her flight — fhe faints at the noife of the approaching hounds — re¬ doubles to elude their purfuit — her feeble limbs are unable to perform their office — and now — • breathlefs and exhaufted, fhe is overtaken, and torn in pieces by her mercilefs purfuers. Such a doom feems fevere, and hard is the heart which doth not commiferate the fuffierer. Its apparent feverity will, however, be much miti¬ gated, if we confider the quick tranfition, from perfedt health to the expiring conflidt. Death, brought on by difeafe, or the decay of nature, would be much more to be dreaded ; and com, pared therewith, the fate of the partridge from the gun of the fowler, or of the trout by the rod of the angler, is mild and enviable. To recapitulate then what hath been advanced on this fubjedt — We have feen the human mind, in every age, endowed with a ftrong, natural in¬ clination to thefe diverfions. In the favage ftate, we have feen, that the fituation of man renders 35 ~ On Hunting , Shootings &c, renders fuch a propenfity abfolutely necefiary j we have feen it become, at once conducive to his convenience, and his pleafures ; we behold him emerge, from a rtate of uncivilization, into polifhed life. This propenfity ftill accompanies him ; it ftimulates him to exercife the efficient caufe of health j it infpires him with a love of induftry and aftivity, the certain fource of true pleafure ; he becomes habituated to fatigue and exertion, defpifes danger and difficulty, nor dreads expofure to thofe elements, from whofe feverity he acquires ftrength of body, with vigor and firmnefs of mind. We have feen, with re- fpeft to brute animals, thar, being dcftined for the ufe of man, in depriving them of exigence, he difturbs not the order and intention of nature; that, in facrificing them to his pleafures, he nei¬ ther deftroys nor diminifhes their portion of enjoyment ; and that, in exercifing the preroga¬ tive with which he is inverted, if he were not thus prompted by inclination, he would be com¬ pelled by neceffity. It may be urged, if not as an argument in favour of thefe diverfions, yet as a circumftance which fhould incline us to caution in condemning them, that they are purfued by many indivi¬ duals, who are diftinguifbed for thofe virtues of the heart ; which feem totally inconfirtent with thoughtlefs or with intentional cruelty ; and which \ On Hunting , Shooting , &c. 353 which are at once the ornament and the blefftngs of fociety. T he Patriot, or the Citizen, who, anxious for the good of his country, and of mankind, bends all his thoughts and all his faculties to the pro¬ motion of the public weal ; who facrifices the comforts of eafe and of repofe, foregoes the fweets of domeftic blifs, nor is with-held by the charms of focial conmfe, when his exertions can tend to relieve the unfortunate from the burden of afflidion, and to enliven the face of forrow with fmiles of joy ; will yet, when leifure, from thefe more noble occupations permits, join in the pleafures of the chafe — arreft the pheafant in his aerial flight — or enfnare the inhabitants of the dimpled lake. And furely the heart, that makes “ all human weal and woe its own,” cannot rejoice in acts of inhumanity — Surely the generous pafllons of philanthrophy and? bene¬ volence, can never infpire or accompany a cruel deed ! It would exceed the limits of this Eflay, to take a comprehenfive view of the human mind, which yet is not unneceffaiy in the inveftigation of this fubjed. It might then, perhaps, appear, that amidft all the variety and eccentricity, which the contemplation of a given charader prefents, the primary difpofltions, the original motives, and fprings of adion, are extremely few. If Vol. I. A a this f 354 On Hunting , Shooting , lie. this were proved, the Teeming inconfiftency between many of the a&ions of an individual muff difappear ; as it would be unfair to reafon from any partial view of his character. Perhaps the difpofitions, which incline us to thefe diverfions, are the fame which, under other circumftances, incite to the molt heroic actions. The courage gained in the field, may be exerted to reftrain the infolence or ambition of a tyrant ; expofure to fatigue, and the inclemency of feafons, qualify us for thofe exer¬ tions which our ftations, as members of fociety may demand ; and he who, fearlefs of danger, is emulous of diftinction in the chafe, may equally pant for glory, when the invafion of his country prompts him to repel her foes. We may further obferve, that if Nature, with a liberal, but not lavifh hand, hath bellowed on all her offspring, thofe powers and propen- fities only, which their own neceffities, or the general order and oeconomy of the fyftem require, we (hall be unable to difeover her intention in the gifts of feent to the hound, fwiftnefs to the grey-hound, and fagacity to the pointer ; thefe being amongft the number of innate ir.ftinflive faculties, which can only be exercifed in fome of the diverfions we fpeak of, and for which purpofes, we may therefore reafonaoly prefume they were given. Upon Dr. Father gill on Longevity. 355 Upon the whole, may we not then conclude, that man, by co-operating with fuch animals, employs both his and their faculties on the purpofes for which they were partially defigned : thus tending to complete the bounteous fcheme of Providence; the happinefs and well-being of all its creatures ? Observations on Longevity. By Anthony Fothergill, M. D. F. R. S. Communicated in a Letter to Dr , Percival. Read January 1 5, 1783. DEAR SIR, 1 I HAVE often thought, it would be an ufeful undertaking to colleft into one point of view, the memorable instances of long-lived perfons, whofe ages are recorded by monumental infcrip- tions, biographical writings, or even by the • public prints. The only judicious attempt I have yet feen of this kind, was by the ingenious Mr. IVhitehurJl , a few years ago, in his Inquiry into the Origin and Formation of the Earth. To the examples of longevity mentioned by him, as collected by a perfon of veracity from the A a 2 above 556 Dr. Fothergill on Longevity. above fources, I have now added fundry remark¬ able inftanc'es of a fimilar kind, as they have occurred to me in the courfe of reading; and have annexed the authorities, (fo far as was practicable) that you may be enabled to judge of the degree of credibility, that may feem due to the refpedive fads, and of the allowance which it may appear neceffary to make, for that natural propenfity, which mankind have ever betrayed for the marvellous. Now, admitting that many of the ages may have been fomewhat exaggerated, yet kill there can be no pofiible doubt, that even thefe have extended far beyond the ordinary period of life, and may therefore be entitled to a place in the following tables, which I fubmit to your confideration, as a fmall fpecimen of what might be more worthy your attention, if conduded hereafter on a larger fcale, and purfued with chronological accuracy. table 357 Dr. Fotbergill on Longevity . TABLE I. OF LONGEVITY. Names of the Perfons. Ages Thomas Parre Henry Jenkins 169 Robert Montgomery 126 James S nds 140 His Wife 120 Countefs of Defmond ^140 J. Sagar I 12' - - Laurence 3 4C Simon Sack i4t Gel. Thomas Window r4b Francis Conftft 15° Chrift. J. Drakenberg 146 M rgaret Forfter 136 104 Francis Bons I 2 I John Bronkey *34 James Bowels 152 John Tice 125 John Mount 136 A. Goldfmith 3 40 Mary Ya es 128 John Bales 126I William Ellis 170 Louifla Truxo, a Ne- grefs in S. Ameiica *75 Marearet Patten 13S Janet Taylur 108, Richard Lloyd r33 Sufannah Hilliar ICO James Htyley 1 1 2 Ann Cockbolt 105 William WJker, aged I IS, Places of Abode. Yorkfhire Diito Staffordlhire Ditto Ireland Ditto Lancalhire Scotland Trior.ia Ireland Yorklhire Norway Cumberland Ditto France Devonfhire Killing worth Worcefterlhire Scotland Francs Shroplbire Northampton Live pool Tucunnan, S. America Lockneugh nearPaifley Fintray, Scotland Montgomery Piddington, North- amptonlhire Middlewirh, Chefhire Stoke-Bruerne, North- amptonlhire Living or Dead. Died Nov. 16, 1635 Phil Tranf No. 44, Died Dec. 8, 1670 Phil. Tranf. No. 221 Di d in - 1670. "I Do. Fuller’s Worthies* J P-47- . Rawleigh’s Hift.p. 166. Died - - 1631 - - 1668 (b) Living - - (CJ Died May 30, 1764 - Aug. 26, 1766 - Jan. - 176S - June 24, Both living 1771 Died Feb. 6, 1760 Living - - I777(VJ Died Aug. 15, 165 (,(/) - March 1774^; - Feb. 27, 1776^ A ) - June 1776 (,) - ' ' 177 Theology, p. 177. (d) Annual Regiher. (e) Daily Adverlifor, Nov. 18, 1777. (f) Warwickfhire. lg) Daily Advertifer, March 1774. (A) Morning Poll, Feb. 29, 1776. (') Daily Advenifer, June 24, J776. ' Saints Church. (r») London Even. Poll, Aog. 22, 1780. («) London Chronicle, Oa. 5, 1780. (0) North. Mercury, Feb. 19, 1781. (/>) Gen. Even. Poll, March 24, 1781. (7) Well known to Perfons of Credit at Northampton. A a 3 If 35 8 Dr. F 'other gill on Longevity. If we look back to an early period of the chridian sera, we fliall find that Italy has been, at lead about that time peculiarly propitious to longevity. Lord Bacon obferves, that the year of our Lord 76, in the reign of Vejpafian , was memorable ; for in that year was a taxing, which afforded the mod authentic method of knowing the ages of men. From it, there were found in that part of Italy > lying between the Appenine mountains, and the river Po , one hundred and twenty four perfons who either equalled, or exceeded one hundred years of age, namely: TABLE IL 54 Perfons 57 - ■» 2 - - 4 - - 4 - - 3 - - In Parma 3 - - 2 - - In Brujfels 1 - - In Placentia 1 - - In Faventia 1 - - 6 - - 4 - - In Rimino 1 - . of 100 Years each. of 1 10 of 125 of 130 of I 36 of 140 of 120 Years each. of 130 of 125 of 131 of 132 of I 10 of 1 20 of 150 Years, viz. Marcus Aponius. Mr. Dr. Fothergill on Longevity. 359 Mr. Carew, in his furvey of Cornwall, affures us, that it is no unufual thing, with the inhabit¬ ants of that county, to reach ninety years of age and upwards, and even to retain their ftrength of body, and perfect ufe of their fenfes. Belides Brown , the Cornifh beggar, who lived to one hundred and twenty, and one Polezew to one hundred and thirty years of age, he remembered the deceafe ofifour perfons in his own parifh, the fum of whofe years, taken colle&ively, amounted to three hundred and forty. Now, although longevity evidently prevails more in certain difirifls than in others, yet it is, by no means, confined to any particular nation or climate -3 nor are there wanting infiances of it, in almoft every quarter of the globe, as appears from the preceding, as well as the fubfequent table. A a 4 TABLE 360 Dr. Fothergill on Longevity TABLE III. OF LONGEVITY. Names of the Perfons. Age. Hippocrates, Phyfician, 104 Democritus, Philofopher 109 Galen, Phyfician Albuna Marc Dumitur Raduly Titus Fullonius Abraham Paiba L. Tertulla 140 150 140 150 142 *37 Places of Abode. lfiand of Cos Abdera Pergamus Ethiopia Haromfzeck Tran* filvania Bononia Charles - town, South Carolina Aiminium Lewis Coronaro 100 Venice Robert Blakeney, Efq. Margaret Scott W. Gulftone J. Bright William Pofttll Jane Reeves W. Paulet, Marquis of Winchefter John Wilfon Patrick Wian M. Laurence Evan Williams 114 Armagh, Ireland 125 Dalkeith, Scotland 140 105 120 103 Ireland Ludlow France Efl'ex 106 Hampfhire 116 ”5 140 145 Suffolk Lelbury, Northum¬ berland Orcades Carmarthen Work houfe-, flill alive Where recorded. Lyncbe onHealth,Chap.j. Bacon’s Hifiory, 1095. VcfT. Inft. or Lib. 3. Hakewell’s ap. Lib. 1. Died Jan. 18, 17S2. Gen. Gazetteer, April 18th. Fulgofus, Lib. 8. General Gazetteer. Fulgofus, Lib. 3. Bacon’s Hifl. of Life, &c, P- 134- General Gazetteer. See Infcrip. on her Tomb in Dalkeith Ch. Yard. Fuller’s Worthies. Lynche on Health. Bacon’s Hift. p 134. St. J.Chron. June 14,1781. Baker’s Chron. p. 502. Gen. Gaz Oft. 29, 1782. Plempius Fundammed. Seft. 4, Chap. 8. Buchanan’s Hift. of Scot. Gen. Gazetteer, Oft. 12, 1782. The Antidiluvians are purpofely omitted, as bearing too little reference to the prefent race of mortals, to afford any fatisfadlory conclufions; and the improbable ftories of fome perfons, who have almoft rivalled them in modern times, border too much upon the marvellous, to find a place in thefe tables. The prefent examples are abundantly fufficient to prove, that longevity dpes not depend fo much, as has been fuppofed, on Dr. F other gill on Longevity. cn any particular climate, fituation, or occu¬ pation in life. For we fee, that it often prevails in places, where all thefe are extremely dif- fimilar; and it would, moreover, be very difficult, in the hiftories of the feveral perfons above-mentioned, to find any circumfiance common to them all, except, perhaps that of being born of healthy parents, and of bein^ inured to - daily labour, temperance, and fimplicity of diet. Among the inferior ranks of mankind, therefore, rather than arnongd the Tons of eafe and luxury, fhall we find die molt numerous inlfances of longevitv • even frequently, when other external circumftances feem extremely unfavourable : as in the cafe of the poor fexton at Peterborough , who, notwith- (landing his unpromifing occupation among dead bodies, lived long enough to bury two crowned heads, and to furvive two complete generations.* The livelihood of Henry Jenkins , and old Parr, is faid to have confided chiefly of the coarfeft fare, as they depended on precarious alms. To which may be added, the remarkable inftance of /Ignes Mlhurne , who, after bringing forth a numerous offspring, and being obliged, through extreme indigence, to pafs the latter part of her life in St. Luke’s wQrk-houfe, yet reached her * Fuller' % Worthies, p. 293, from a Memorial in the Cathedral at Peterborough. hundredth 362 Dr. Father gill oh Longevity. hundredth and fixth year, in that fordid, unfriendly fituation.* The plain diet, and invigorating employments of a country life, are acknowledged, on all hands, to be highly conducive to health and longevity, while the luxury and refinements of large cities are allowed to be equally deftruc- tive to the human fpecies : and this confideration alone, perhaps, more than counterbalances all the boafted privileges, of fuperior elegance and civilization, refulting from a city life. From country villages, and not from crouded cities, have the preceding inftances of longevity been chiefly fupplied. Accordingly it appears, from the London bills of Mortality, during a period of thirty years, viz. from the' year 3728 to 1758, the fum of the deaths amounted to 750,322, and that, in all this prodigious number, only two hundred and forty two perfons furvived the hundredth year of their age! This overgrown metropolis is computed, by my learned friend Dr. Price , to contain a ninth part of the inhabitants of England, and to confume annually, feven thoufand perfons, who remove into it from the country every year, without increafing it. He moreover obferves, that the number of inhabitants, in England and Wales, has diminiChed about one fourth part fince fhe revolution, and fo rapidly of late, that, id ? Lynche's Guide to Health, C. III. i Dr. F other gill on Longevity. 363 in eleven years, near 200,000 of our common people have been loft!* If the calculation be juft, however alarming it may appear in a national view, there is this confolation, when confidered in a philofophical light, that without partial evil, there can be no general good ; and that, what a nation lofes in the fcale of popu¬ lation at one period, it gains at another; and thus, probably, the average number of inhabit¬ ants, on the furface of the globe, continues, at all times, nearly the fame. By this medium, the world is neither overftocked with inhabitants, nor kept too thin, but life and death keep a tolerably equal pace. The inhabitants of this ifland, comparatively fpeaking, are but as the duft of the balance; yet, inftead of being di- miniftied, we are aftured by other writers, thar, within thefe thirty years, they are great! v in- creafed. f The defire of felf-prefervation, and of pro- trading the fhort fpan of life, is fo intimately interwoven with our conftiturion, that it is juftly efteemed one of the firft principles of our nature, and, in fpite even of pain and mifery, feldom quits us to the laft moments of our exiftence. It feems, therefore, to be no left our duty, than our intereft, to examine minutely • * Obfervations on Population, &c. p. 305. t The Rev, Mr. Howlet, Mr. Wales, and others. into 364 Dr. F other gill on Longevity. into the various means, that have been con- fidered as conducive to health and long life ; and, if poffible, to diftinguifh fuch circumftances as are effential to that great end, from thofe ■which are merely accidental. But here, it is much to be regretted, that an accurate hiftory of the lives of all the remarkable peifons, in the above table, fo far as relates to the diet, regimen, and the ufe of the non-naturals , has not been faithfully handed down to us ; without which, it is impofiible to draw the neceffary inferences. Is it not then a matter of aftonifhment, that hiftorians and philofophers have hitherto paid fo little attention to longevity ? If the prefent imperfect lift Ihould excite others, of more leifure and better abilities, to undertake a full inveftigation of fo interefling a fubjedt, the enquiry might prove not only curious, but highly ufeful to mankind, in order to furnifh materials for a future hiftory of longevity, the bills of mortality, throughout the kingdom, ought firfb to be revifed, and put on a better foot¬ ing ; agreeably to the fcheme which you point¬ ed out fome time ago, and of which Manchefter and Chefler, have already given a fpecimen, highly worthy of imitation. The plan, however, might be further improved, with very little trouble, by adding a particular account of the diet and regimen -of every perfon, who dies at eighty years of age, or upwards j and mention- 1 Dr. Father gill on "Longevity . ing, whether his parents were healthy, long-lived people, See. &c. An accurate regifler, thus eftablifhed throughout the Brttijh dominions, would be productive of many important advan¬ tages to fociety, not only in a medical, and philofophical, but alfo in a political and moral view. It is therefore to be hoped, that the legiflature will not long delay taking an object, of fuch great utility, into their ferious con- fideration. All the circumflances, that are molt efientially neceffary to life, may be comprized under the fix following heads. 1. Air and climate. 2. Meat and drink. 3. Motion and reft. 4. The fecretions and excretions. 5. Sleep and watching. 6. Affedions of the mind. Thefe, though all perfectly natural to the conftitution, have by writers, been ftyled the non-naturals , by a flrange perverfion of lan¬ guage ; and have been all copioufly handled under that improper term. However, it may not be amifs, to offer a few fhort obfervations on each, as they are fo immediately connected with the prefen t fubjeff. 1. Air, Sec. It has long been known, that frefb air is more immediately neceflary to life than food ; for a man may live two or three days without the latter, but not many minutes without the former. The vivifying principle contained $66 Dr. Pother gill on Longevity. contained in the atmofphere, fo eflfential to the lupport of flame, as well as animal life, concerning which, authors have propofed fo many conjedlures, appears now to be nothing elfe but that pure dephlogifticated fluid lately difeovered by that ingenious philofopher. Dr. Prieftley. The common atmofphere may well be fuppofed to be more or lefs healthy in pro¬ portion, as it abounds with this animating principle. As this exhales, in copious flreams, from the green leaves of all kinds of vegetables, even from thole of the mod; poifonous kind, may we not, in fome meafure, account why inftances of longevity are fo much more frequent in the country, than in great cities •, where the air, inftead of partaking fo largely of this falutary impregnation, is daily contaminated with noxious animal effluvia, and phlogifton ? With refpedl to climate, various oblervations confpire to prove, that thofe regions, which lie within the temperate zones, are bed calcu¬ lated to promote long life. Hence, perhaps, may be explained, why Italy has produced fo many long livers, and why Jflands in general are more falutary than Continents; of which Bermudas , and fome others, afford examples. And it is a pleafing circumft ance, that our own Ifland, appears from the above table, (notwithftanding the fudden viciffltudes to which it is liable,) to contain far more inftances of Dr. F other gill on Longevity. ^ of longevity than could well be imagined. The ingenious Mr. Wbileburft , a (lures us, from certain fads, that Englifhmen. are, in general, longer lived than North Americans; and, that a Britifh constitution will Jaft lonper, even in that climate, than a native one.* But it mud: be allowed in general, that the human conftitution is adapted to the peculiar ft ate and temperature, of each refpedive climate, fo that no part of the habitable globe can be pronounced too hot, or too cold, for its in¬ habitants. Yet, in order to promote a friendly intercourfe between the moft remote regions, the Author of Nature has wifely enabled the inhabitants to endure great and fuprizinc- changes of temperature with impunity.-f- 2. Foods and drink. Though foods and drink, of the moft fimple kinds, are allowed to be the beft calculated for fupportini:r the body in health, yet it can hardly be doubted, but variety may be fafely indulged occasionally* provided men would reftrain their appetites within the bounds of temperance. For boun¬ tiful nature cannot be fuppofed to have poured^ forth fuch a rich profufion of provifions, merely * Enquiry into the Original State, and Formation of the Earth. t ^ec remarkable inftances of this, in the Account of Experiments in a heated room, by Dr. George Sordyce, and others. Phil. Tranf, vol. LXJX. to g 68 Dr. Fo they gill on Longevity. to tantalize the human fpecies, without attribut¬ ing to her the part of a cruel ftep-dame, inftead of that of the kind and indulgent parent. Befides, we find, that by the wonderful powers of the digeftive organs, a variety of animal and vegetable fubltances, of very difcordant prin¬ ciples, are happily affimilated into one bland homogeneous chyle ; therefore, it feems natural to diftru ft thofe cynical writers, who would rigidly confine mankind to one fimple difh, and their drink to the mere water of the brook. Nature, it is true, has pointed out that mild, infipid fluid, as the univerfal diluent ; and, there¬ fore, moft admirably adapted for our daily beverage. But experience has equally proved, that vinpus, and fpiritous liquors, on certain occafions, are no lefs falutary and beneficial, whether it be to fupport firength againft fick- nefs, or bodily fatigue, or to exhilerate the mind under the preflure of heavy misfortunes. But alas ! what Nature meant for innocent and ufeful cordials, to be ufed only occafionally, and according to the direction of reafon ; cudom and caprice, have, by degrees, rendered habitual to the human frame, and liable to the mofl enormous and deitrudtive abufes ? Hence, it may be juftly doubted, whether gluttony and intemperance, have not depopulated the world, more than even fword, peftilence, and famine. True, therefore, is the old maxim, “ Modus utendi Dr. F other gill on Longevity. 369 utendi ex veneno facie Medicamentum, ex Medi- camento, venenum.” 3. and 4. Motion and reft, fleep and watching. It is allowed on all hands, that alternate motion and reft, and deep and watching, are neceftary conditions to health and longevity ; and that they ought to be adapted to age, temperament, conftitution, temperature of the climate, &c. but the errors which mankind daily commit, in thefe refpedts, become a fruitful fource of difeafes. While fome are bloated and relaxed with eafe and indolence, others are emaciated, and become rigid, through hard labour, watch¬ ing, and fatigue. 5. Secretions and execretions. Where the animal functions are duly performed, the fecre- tions go on regularly 3 and the different evacua¬ tions fo exa&ly correfpond to the quantity of aliment taken in, in a given time, that the body is found to return daily to nearly the fame weight. If any particular evacuation happen to be pre- ternaturally diminifhed, fome other evacuation is proportionally augmented, and the equilibrium is commonly preferved 5 but continued irregula¬ rities, in thefe important functions, cannot but terminate in difeafe. 6. Affe&ions of the mind. The due regula¬ tion of the paftions, perhaps, contributes more to health and longevity, than that of any Vol. I. B b other 370 Dr. F other gill on Longevity. other of the non-naturals. The animating paf- fions, fuch as joy, hope, love, See. when kept within proper bounds, gently excite the nervous influence, promote an equable circulation, and are highly conducive to health while the deprefling affedtions, fuch as fear, grief, and defpair, produce the contrary effedt, and lay the foundation of the molt formidable difeafes. From the light which hiftory affords us, as well as from fome inftances in the above table, there is great reafon to believe, that longevity is, in a great meafure, hereditary ; and that healthy, long-lived parents would commonly tranfmit the fame to their children, were it not for the frequent errors in the non-naturals, which fo evidently tend to the abbreviation of human life. Whence is it, but from thefe caufes, and the unnatural modes of living, that, of all the chil¬ dren which are born in the capital cities of Europe , nearly one half die in early infancy ? To what elfe can we attribute this extraordinary mortality ? Such an amazing proportion of premature deaths is a circumftance unheard of, among favage nations, or among the young of other animals! In the earlieft ages, we are informed, that human life was protradted to a very extraordinary length ; yet how few perfons, in thefe later times, arrive at that period, which nature Dr. Fothergill on Longevity. 37 1 nature Teems to have defigned ! Man is, by nature, a field-animal, and Teems deftined to rile with the Tun, and to Tpend a large portion of his time in the open air, to inure his body to robuft exercffes, and the 'inclemency of the feafons, and to make a plain homely repaft, only when hunger dictates. But art has ftudi- oufly defeated the kind intentions of nature ; and by enflaving him to all the blandifhments of fenfe, has left him, alas ! an eafy viftim to folly and caprice ! To enumerate the various abufes, which take place from the earlieft in¬ fancy, and which are continued through the fucceeding ftages of modifh life, would carry me far beyond my prefent intention. Suffice it to obferve, that they prevail more particularly among people, who are the moft highly polifhed and refined. To compare their artificial mode of life, with that of nature, or even with the long livers in the lift, would, probably, afford a very ftriking contraft ; and, at the fame time, fupply an additional reafon, why, in very large cities, inftances of longevity are To very rare. Of late years, the increafing luxury and diffipa- tion of the age, no longer confined to the metropolis, have Tpread their contagion far and wide into the country, fo as to afford the fage divine, and Tpeculative moralift, a more melancholy profpetft of the apparent degeneracy B b 2 of 372 Dr. Fothergill on Longevity • of the human race, than, perhaps, was ever before exhibited !* That fo complicated a machine, as the human body, fo delicate in its texture, and fo exquifitely formed in all its parts, diould continue, for fo many years to perform its various funftions, even under the moft prudent conduct, is not a little furprifing: but that it fhould ever hold out to any advanced period, under all the rude fhocks it fo often meets with from riot and intemperance, which lay it open to all the various “ ills that fiefh is heir to,” is dill more truly miraculous ! But here, perhaps, it may be alledged, that it never can be fuppofed, all the long livers purfued one uniform, regular courfe of life, fince it is well known, that fome of the mod noted ones were fometimes guilty of great deviations from drift temperance and regularity. Let not this, however, encourage the giddy libertines, of the prefent age, to hope to render their continued fcenes of intemperance * * I fay apparently , becaufe mankind, in reality, have been equally prone to vice and folly in all ages ; only thefe have alfumed different appearances, according to the tafte and manners of the times : not that the human heart has been fucceflively growing more and more depraved, as the Poet fatyrically exclaims, iEtas parentum, pejor avis, tulit Nos nequiores ; mox daturos Progeniem vitiofiorem ! Hor. Lib. III. Ode 6. and Dr. Bother gill on Longevity. 373 and debauchery, compatible with health and longevity. The duties and occupations of life, will not, indeed, permit the generality of man¬ kind to live by rule, and fubjeCt themfelves to a precife regimen. Fortunately, this is not neceffary: for, the divine Architect, has, with infinite wifdom, rendered the human frame fo ductile, as to admit of a very confiderable latitude of health ; yet this has its bounds, which none can long tranfgrefs with impunity. For, if old Farr , notwithftanding fome exceffes, and irregularities, arrived at fo aftonifhing an age, yet we have reafon to fuppofe, that thefe were far from being habitual ; and may alfo conclude, that had it not been for thefe abufes, his life might have been ftill confiderably pro- traded. On the whole, though forne few exceptions may occur, to what has been already advanced, yet, it will be found, in general, that all extremes are unfriendly to health and longevity. Excef- (ive heat enervates the body ; extreme cold renders it torpid : fioth and inactivity clog the neceffary movements of the machine; in- ceffant labour foon wears it out. On the other hand, a temperate climate, moderate exercife, pure country air, and find temperance, together with a prudent regulation of the paffions, will prove the molt efficacious means of protracting life to its utmoft limits. Now, if any of thefe B b 3 require 374 Fr. Father gill on Longevity. require more peculiar attention than the reft, it is, undoubtedly, the laft : for the focial paffions, like gentle gales, fan the brittle vefifel calmly along the ocean of life, while, on the other hand, rough, turbulent ones daft) it upon rocks and quickfands. Hence, perhaps, it may be ex¬ plained, why the cultivation of philofophy, mufic, and the fine arts, all which manifeftly tend to humanize the foul, and to calm the rougher paffions, are fo highly conducive to longevity. And, finally, why there is no fure method of fecuring that habitual calmnefs and ferenity of mind, which conftitute true happi- nefs, and which are, at the fame time, fo eflential to health and long life, without virtue. “ JEquanimitas fola, atque utiica /elicit as” I hope you will excufe the prolixity of this letter, and believe me to be, with the higheft efteem, Dear Sir, Your fincere Friend and faithful humble Servant, i A. FOTHERGILL. London, Nov. 23, 1782. On Dr. Barnes on the Influence of the Imagination 3 &c. 375 On the Influence of the Imagination, and the Passions, upon the Understanding. By the Rev. Thomas Barnes, D. D. Read Feb. 12, 17 83. SENTIMENT was advanced in con- verfation fcveral evenings ago, in this place, which, to fome Gentlemen, appeared ftrange, or rather, falfe. The refpe£t I owe to this Society and above all, to Truth, obliges me to endeavour to defend a point, which appears to me, to be, not only juft, but very important. In the converlation before alluded to, it had been aflerted, “ That an energy, imparted to “ one power of the human mind, will often com- “ municate a degree of energy to the reft , and “ thus affift and quicken their operation.” In proof of this, it was maintained, “That “ in many cafes, the vigour of imagination will “ give correfpondent vigour to the judgment,” and “That a degree of warmth and sensibility, “ will be greatly favourable to the clearnefi , as “ well as to the celerity , of the perceptions of the “ understanding.” This fentiment will, probably, alarm thofe who have implicitly received what is fo generally afterted, “ That pure and fimple truth has nothing B b 4 “ to 27 6 Dr. Barnes on the Influence of the Imagination, <( to do with imagination, feelings, or paflions ; have been rejedtcd, while another, not lefs liable to objections, has been almoft univerfally re¬ ceived. This theory, which I fhall prefently mention, was at firft invented by a French Gentleman, Monfleur 396 .Dr. E*Jan on the Ajcent of Vapour. Monfieur le Roi, and afterwards revived by Lord KaimeSy and Dottor Hugh Hamilton. It is this — That the air difTolves water, as water does faline fubftances : the folution being per¬ fect, the air will become tranfparent. Objections. 1. Were this theory true, evapo¬ ration could not be performed without air ; but Mr. Watt, contrary to the theory fupported by Lord Kaimes and Dr. Hamilton, has proved, that when water in vacuo was boiled with a degree of heat very little greater than that of the human body, the (team came over, and was condenfed in the refrigeratory. But he relates, that the eva¬ poration was not quicker than in the open air. 2. Were the doctrine of folution true, the air would be heavier, the more water it contained ; and, as clouds contain a great portion of water, they ought to float on the furface of the earth, and not in the higher regions, as we daily ob- ferve. 3. We never could expeCt any rain, unlefs the air were fuperfaturated with water j and it would only yield to us, what it coujd not retain in folution. 4. It is univerfally allowed, that heat con¬ tributes, very much, towards converting water into vapour, which is again condenled by coldf In what manner, will the do&rine of folution account for the fpontaneous evaporation of water, jind its being fufpended in air, in the colded weather, Dr. Eajon on the AJcent of Vapour. 397 weather, even when the thermometer is below the freezing point ? Though I cannot allow of fuch a folution as above mentioned, I can, however, readily admit of a ftrong attraftion betwixt air and water ; for no air is found with¬ out water, and no water without air. Water, which is eight hundred times heavier than air, by a very fmall degree of heat, may be converted into vapour, which vapour is one thoufand eight hundred times lighter than air, according to Mr. Watt. It confcquently follows, that vapour will rife up in the atmofphere, to the height of its own fpecific gravity ; but, long before it could reach to fo high a region, it would be condenfed by cold, and return to the earth in rain, were it not for the latent heat* it con¬ tains, and the ele&ric matter in the air. Whatever I mention concerning Eleflricity, is from fadls, and not from any theory, written about it, which is above my comprehenfion. But as the terms now in ufe, viz. pofkive and negative, or plus and minus, are generally belt underftood, I fhall exprefs myfelf by them. * That heat enters into vapour, and becomes an ingre* dient in it, is certain. For example : if we diftil a pound of fleam, the water in the refrigeratory will be heated by it, as much as by a pound of water heated one thoufand and twelve degrees ; fo eight hundred degrees of heat appear, though the fleam is not fenfibly hotter than boil¬ ing water, which is two hundred and twelve. £xj>. The 29 3 Dr. Eqfon on the Af cent of Vapour. The able Nollet has proved, that water elec¬ trified, will evaporate fafter, than water which is not electrified. Does it not follow, that the more electric matter is in the air, the quicker the evaporation of water will be ? And Mr. Cavallo has proved, that at all times the atmo- fphere is electrified, but much ftronger in frofty, than in warm weather ; and by no means lefs in the night than in the day: it is like wife ftronger in elevated, than in low places. From thefe faCts, we may be enabled to account, why evaporation is carried on during very cold •weather. All the heat contained in water, above what is fufficient to keep it in a fluid Hate, will convert it into vapour ; which, in a north or north eaft wind, when the ele&ric matter greatly abounds, will be carried off with much rapidity; and, by the power of ele&ricity, will be rendered ftill lighter, the higher it afcends ; each particle repelling each other, and prevent¬ ing the cold from condenfing the vapour, in its afcent through the cold regions of the atmo- fphere. The higher it rifes, the more fpace there is for expanfion ; and the more it is ex¬ panded, the clearer will the atmofphere appear, and, probably, the higher the mercury will rife in the barometer. It likewife appears, that the eleCtric matter is more fenfible near the lurface of the earth, in cold Dr. Eafon on the Ajcent of Vapour. 399 Cold northern countries, than in warm fouthern places. Mr. Volta, with a very fimple apparatus, on the upper gallery of St. Paul’s, produced an eledric fpark, which, he told me, in Italy, could not be done, but on a very high moun¬ tain, or in a fituation greatly elevated. This feems a wife provifion in nature, that the eledric matter fhould appear near the furface of the earth in cold climates, to raife up and fufpend the vapour in the air, which otherways, would be condenfed by the cold ; whereas, in warm countries, the heat of the earth will be fufficient to raife vapours to a great height, which are afterwards carried ftill higher, by the eledric matter in the upper regions. This, perhaps, is the caufe, why the air is fo clear and tranfpa- rent in warm climates. By making fome obfervations on the falling of rain, we fhall have other proofs, that the eledric matter is the great caufe, by which vapour is fupported in the atmofphere. Here I mull obferve a fad, well known to ail prefent, that bodies eledrified, by the fame eledric power (no matter whether pofitive or negative) repel each other ; and when eledrified by the different powers, that is, the one plus and the other minus, attrad each other : on coming into contad, an equilibrium is reftored, and neither of them will fhew any figns of eledricity. From 400 2>. Eafon on the AJcent of Vapour. From this it follows : If two clouds are elec- trifled by the lame power, they will repel each other, and the vapour be fufpended in both ; but, when one is pofltive and the other negative* they will attraCl each other, and reftore an equi¬ librium. The electric power, by which the vapour was fufpended, being now deftroyed by the mutual action of the clouds on each other, the particles of water will have an opportunity of running together into each other, and, as they augment in fize, will gain a greater degree of gravity, defeending in fmall rain, or a heavy Ihower, according to circumftances. A cloud, highly eleClrified, pafling over a high building or mountain, may be attracted by, and be deprived of its electricity, without or with a violent exploflon of thunder. If the cloud is electrified plus, the fire will defeend from the cloud to the mountain ; but, if it be electrified minus, the fire will afeend from the mountain to the cloud. In both cafes, the effeCt is the fame* and generally, heavy rain immediately, or foori after, follows : this is v/ell known to the inha¬ bitants of, and travellers among, mountains. From this, we can eafily account, why thunder-* Ihowers are often partial, falling near, or among mountains, and the rain in fuch quantities, as to occafion rivers to be overflowed ; whilft, at the diftance of a few miles, the ground continues parched Dr. Eafon on the Afcent of Vapour . 401 parched up with drought, and the roads covered wich duft.* It often happens, that one clap of thunder is not fufiicient to produce rain from a cloud, nor even a fecond : in lhort, the claps mud be repeated, till an equilibrium is restored, and then the rain mull, of confequcnce, fall. Some¬ times we may have violent thunder and light¬ ning without rain, and the black appearance of the heavens may be changed to a clear tranfparent fky, elpecially in warm weather. To account for this, it mull be remembered, as I lately faid, that one or more claps of thunder are not always fufhcient to produce rain from the clouds: fo, if an equilibrium be not reftored, little or no rain will fall, and in a lhort time, the elec¬ tric matter, palling from the earth to the clouds, or the fuperabundant quantity in the air, will electrify t'nofe black clouds, by which means the particles of vapour will be expanded, raifed higher, and the air become clear. Clouds may be melted away, even when we are look¬ ing at them, by another caufe, that is, by the * Saspe etiam immenfum coelo venit agmen aquarum. Et fcedam glomerant tempeftatem imbribus atris Collects ex alto nubes. Ipfe pater, media nitnbrorum in node, corufca Fulmina molitur dextra, quo maxima motu Terra tremit. . Virg . Vol. I. D d heat 402 Dr. Eafon on the Afcent of Vapour. heat of the fun. We know, that tranfparenJ bodies are not heated by the fun, but opaque ones are ; the clouds being opaque bodies, are warmed by the rays of the fun fhining on them, and any additional quantity of heat will rarify the vapour, and occafion its expanding in the air, which will foon become tranfparent. When vapour is made to expand, more than it would otherwife do, a certain quantity of abfolute heat is neceflary to keep it in the form of vapour 5 therefore, when the receiver of an air-pump is exhaufting, it appears muddy, and a number of drops are found within it ; the moifture contained in the air, in the form of vapour, being made to occupy a greater fpace than what is natural to it, and receiving no addition of heat, a part of it it condenfed.* If, therefore, the air is fuddenly rarified, a few drops of rain will defcend, as may often be ob- ferved in the fummer feafon. I have repeatedly obferved, efpecially during the fummer, when the wind is at north eaft, that the weather is, in general, cold and dry, with a clear atmofphere. Should the wind fud- * On this principle, we can readily account for the mill, which appears, on difcharging an air-gun : the condenfed air in the chamber of the barrel, on being fet free, will ex¬ pand fuddenly, occupying a larger fpace, and no additional heat being acquired, the vapours mult neceifarily be con¬ denfed in the form of mill. denlv # Dr. Eafon on the Ajcenl of Vapour . 403 denly change to fouth weft, in a few hours, black clouds begin to gather, vegetables look fickly, and droop their leaves ; and, foon after, comes on a violent ftorm of thunder, with heavy rain.* This change, I imagine, is not fo much owing to the fouth weft wind bringing rain, as to the atmofphere’s being changed from an eledtric ftate, capable of fufpending vapour, to a ftate of parting .with its moifture. As foon as the ftorm is going off, vegetables revive from their languid ftate, and the air recovers its ufual ■afpedt. From this we may conclude, that no inftrument can be made to afcertain the quantity of moifture in the air : all that is, or ought to be expedted from a hygrometer, is to fhew, whether the air be in a ftate to retain, or part with its moifture. In apparent dry weather it may point to rain ; and when it rains, it may point to fair. For this reafon, the ftones of halls, and fmooth fubrtances, are often bedewed with Wet, in dry warm weather, (that is, the air is in a ftate to part with its moifture) and, vice verfd , they will dry in the time of rain. Left this paper fhould exceed the common limits of time in reading, I ftiall pafs over thofe obfervations, which might be made on fogs or mifts ; a few excepted, which I {hall fubjoin in a • “ Ingeminant Aullri, et denfiffiraus imber.” Virg. D d 2 note. 404 Dr. Edfon on the Jfcenl of Vapour'. note.* I (hall, therefore, conclude with a fhort fummary of the whole. 1. That, heat is the great caufe, by which water is converted into vapour, which is con- denfed by cold. 2. That, ele&ricity renders vapour fpecifi- cally lighter, and adds to its abfolute heat, repelling its particles ; which particles would be condenfed by cold : and that, electricity is the great agent by which vapour afeends to the upper regions. * Fogs are produced by two caufes as different as their effe&s are oppofite. A fog may be be produced by a preci¬ pitation of rain, in very fmall particles, like a cloud floating on the furface of the earth. In this cafe the air is moift and damp, and never fails to wet a traveller’s cloaths ; the ftones of the ftreet, painted doors, and hard, cool, fmooth bodies are generally covered with moifture, which ofteri runs in large drops: this, I dare fay, has been obferved by every perfon. Secondly, a fog may be produced by the abforption of moifture, when the air is too dry, and differs from the other juft deferibed ; for it will not im¬ part any of its moifture even to dry bodies, ho damp is to be met with on ftones, polifhed marble, See. This' fad is well known to the inhabitants on the fea coaft of Fifefhire, who during their fummer months, have frequent opportu¬ nities of obferving a fog in the afternoon, driving up the Firth of Forth, with a drying eaft wind, which often blafts the trees and young vegetables, and therefore, in a fmall degree, refembles the Harmattan in drying up the ground, and robbing vegetables of their moifture. 3. That On the Merit of the Ancients , &c. 405 3. That, when the eleftric power, by which vapour is fufpended in the atmofphere, is de- ftroyed, a heavy mift, fmall rain or thunder- fhowers, will be the confequence. Had the advocates for the dodlrine of folution, made heat and eledricity, the folvents, their theory would have been lefs exceptionable.* On the comparative Merit of the Ancients and Moderns, with refpehi to the imitative Arts. By Mr. Thomas Kirshaw. Read February 19, 1783. Vitaque tam longte brevior non fufficit Arti. Frefhoy de arte Graphica. HE life of man being too Ihort, and the A extent of human abilities too confined, to make confiderable improvements or inven¬ tions in any art, we ought to view the per¬ formances of celebrated men, with all the candour, and generofity, they fo well merit. Even, after all the advantages we have received from the united (ludies of ages, we may, with great juflice fay, how fmall and imperfect is all our boafted wifdom, and, how much to be re¬ gretted is it, that we have not made a greater * This paper is, through accident, placed out of the (Order in which it Ihould have been infcrted. D d 3 progrefs 406 On the Merit of the Ancients progrefs in the fpacious field of fcience ! — This fhort efiay is intended to point out the excel¬ lencies of the ancients in the imitative arts: yet, at the fame time, to allow the moderns their due fhare of fame, in having, not only made fome improvements, but inventions, of which the ancients were entirely ignorant. There is not a doubt, but the ancients pofleffed a polilhed tafte, and a critical knowledge of the various and exquifite forms of beauty : they knew the arts, could only receive their per¬ fection from ideal beauty fuperior to what is ever found, in individual, and imperfect nature. There is no man equal, in ftrength and pro¬ portion to the Farnefian Hercules : nor, any woman comparable, for fymmetry of form, to Medicean Venus. Thefe inftances feem to prove, that the au¬ thors of the fineft remains of antiquity formed to themfelves ideas of perfect nature, and collected from various individuals, what no one could fupply. It is faid, that Zeuxis, when he painted his Helena, feleCted five of the molt beautiful virgins that could be found ; and, whatever nature had formed molt: perfeCt in each, he united in a Angle figure. Thus painters, and fculptors, render their ideas more perfeCV, and exalt their Art above Nature and Moderns , with refpetl to the Arts. 407 Nature heiTclf. In this manner, by contem¬ plating grand and exquifite forms of beauty, the operations of the hand are directed by the image in the mind : but how far to proceed, and when to flop, muft be left to the judgment of the artid. That the ancients bear the pajm from the moderns in fculpture, will not be conteded : their religion fandtified and encouraged that branch of fcience. Gods, Demigods, and He¬ roes, all confpired to bring it into the higheft repute : and their images were often depofited in buildings of the molt exquifite tafte, to com¬ memorate particular occurrences. The rage for highly ornamented edifices, perhaps never rofe to a greater height, than amongft the Romans. 1 hefe fons of fortune acquired fo much wealth, and, by plundering didant climes, had fo collected the riches of whole kingdoms into one city, that there was no way left to difiipate fuch immenfe fums, but by engaging in the mod expenfive works of arr. Each ambitious conqueror, defirous to tranfmit his own adlions, and thofe of his ancedors to poderity, called in to his aid the fculptor, and the architect, whofe utmod lkill was exerted to blazon their achievements in the folidity of done and marble. This fhews, in fome meafure, why Sculpture outdripped her fider Art ; for the fpecimens of - d 4 ancient 40S On the Merit of the Ancients ancient Painting are much inferior to modern productions. They are deficient in colouring, chiaro-obfcuro, and keeping. Several of the Clajfics * tell us, there were, but four colours or pigments in ufe amongfl the ancient artifts, viz. black, white, yellow, and red. Now, it is im- 'poflible to produce, from thofe colours only, the variety of tints neceflary to equal even a tolerable colourift of the moderns. Although this evinces nothing againft the abilities of the ancients, we may fairly conclude, that the rich and luxuriant deicriptions, handed down to us, are inflated with hyperbole, fufficient to make us doubt the veracity of fome of their authors. Unfortu¬ nately for thefe warm advocates, the difcoveries of Herculaneum have fpitefully contradicted their afifertions, and furnifhed us with means to draw our own conclufions. It is very poflible they might admire, and be furprized at a fight of, what appeared to them the ultimatum of perfection. The ftories of Zeuxis, and Polygnotus raife a fmile. The former is faid to have painted fruits fo naturally, that birds attempted to eat them ; the latter to have delineated the' charac¬ ter and features of the face fo truly, that phyfiog- nomifts, upon fight of the portrait, could foretel the precife time of the party’s death. Sir Jofhua Reynolds, who may be juftly confidered as the firfl artift in the world, thus delivers his opinion, “ Iq * Pliny, Cicero, and Moderns, with refpefi to the Arts. 409 “ In antique paintings, there are not the ec fmalleft traces to make us think, that what te we call light, and fnade, or a distribution of “ the work into maSTes, claimed any part of their tended, it was a narrow policy, and that gene¬ ral happinefs requires, that the ports fnould be always open, and commerce left to thofe whofe bufinefs it was to purfue it. This, I ob- ferve, was trying the queftion by the laws of • humanity, and not by the policy of dates ; and particularly, not by the politics of the court of France , in one of the fir ft departments of which he, at that time, filled a diftinguifhed place, with much honour. If the laws of juftice and humanity univerfally prevailed, and every man, of whatever country or nation, efteemed every other man as his bro¬ ther and his friend, if all men had but one / 430 Mr. Wimpey on the Impropriety of allowing one common object of purfuit, viz. the general peace and happinefs of mankind ; and if each individual were content with his proportion of good, as it arofe from the general (lock, com¬ merce and every thing elfe would put on a very different face. It would be loft labour to attempt to prove, what every one is daily an eye-witnefs to. The prefent fyftem of politics, not only among princes and ftates, but in fmall communities, and among individuals too, is not only to make the greateft advantages poffible of the wants and diftreffes of others, but to create, as far as is practicable, thofe wants and diftreffes, as the moft certain and direct: road to fuch advantages. Hence, the accurfed third of conqueft, to feed the ambition of princes, and the atrocious fpirit of monoplizing, to create fcarcity in the midftof plenty, todiftrefs, perhaps, ten thoufand perlons in order to gratify the infatiable avarice of one. Whoever may attend to the prefent fyftem of things, as actually exifting in a populous, induftrious, fertile country, where the eyes of every individual are open to private advantage, will foon fee the neceftity of reflrictive lawsj to protect the weak and innocent againft the fraud and abufe of thofe, who make artifice and cunning their ftudy, to impoverifti and enflave the reft of mankind. This is an affair of the lafl: importance, which, I am afraid, is very far a Bounty , to encourage the Exportation of Corn. 43 1 far from being well underftood. Some, I verily believe, from a generofity of temper, and bene¬ volence of difpofition, wifh to fee every means practifed, which might probably reduce the price of commodities, efpecially the necelTaries and conveniences of life. To this end, it has been thought, that if the ports were thrown open, and the flux and reflux of the articles of commerce might beas'free as the tides, it would necefTarily occafion plenty ; and that this would as neceiTarily lower the price, which would be a convenience to all, and particularly, a great blefling to the in- duftrious poor. This do&rine, plaufible as it may feem, from the humanity of the fpirit by which it is didtated, I regard as a fophifm of the mofl dangerous kind. Nothing could fooner reduce this country, to the deepefl poverty and diftrefs. What is it, that has raifed this country to the Hate of affluence, eafe, and happinefs, it has long enjoyed ? Not the natural fecundity of its lands: for, in that refpedt, it is very far inferior to many other countries. Neither our lands, their natural produce, nor the populouf- nefs of the country, could add one grain to its riches, without the induftry and labour of its people : I mean thofe, who not only labour for their maintenance and fupport, but aifo, for the neceffaries and conveniences of thofe, whofe circumftances enable them to pay for what they are unable or unwilling to provide for themfelves. 4?2 Mr. Wimpey on the Impropriety of allowing themfelves. It is the well-directed induftry of the labouring poor, which conftitutes the riches of a country. They are, when beneficially em¬ ployed, the true finews of its profperity ; to pro¬ mote and effeft which, is the heighth of political wifdom. Numbers, unlefs ufefully employed, are the bane and curfe of every community. Nature, in the moft fertile foil, and climate, can only provide the rough materials ; it is the induftrious and laborious man, who cultivates the earth, reaps the grain, fhears the flock, fabricates the cloth, fells the timber, penetrates into the bowels of the earth, and navigates the feas. Upon the unremitting toil of thefe labo¬ rious people, do the riches, the profperity, and the happinefs of every populous country depend. A populous country, deflitute of employment for its people, would foon exhibit a dreadful fcene of wretchednefs and mifery. A people, ener¬ vated and difpiritcd for want of employment, and the means of a comfortable fubfiftence, to be procured by it alone, would foon become the fcourge and curfe of a country. But let us make the experiment ; like fight¬ ing a battle, it will be much more fafe to do it on paper, than in the field. I am very far from pretending to have a perfect, or even a comprehenfive view of the fubjeci ; but, I hope, without vanity it may be faid, I have a practical knowledge of commerce, fufficient to enable a Bounty , to encourage the Exportation of Corn: 433 enable me to point out the inevitable ruin, that muft attend the fyftem of eftablilhing free ports, for the importation and exportation of all kinds of commodities without reftridtion. I will beg leave to premile a few proportions relative to this fubjedt, the certainty of which, I perfuade myfelf, will not be difputed. 1. If the labour and induftry of a people are the fources of the riches they pofiefs, thefe fources muft dry up or abate, in proportion as the peo¬ ple want employment. 2. Both the land, and labour of England are very high, in comparifon with thofe of almoft any other country in Europe; confequently, fuch countries can under-fell England , ceteris paribus , both in corn and manufadtures, in any market in the world. 3. The produce of the earth, in its natural ftate, and raw materials of all kinds, have their value exceedingly increafed, by the fkill and labour bellowed upon them, in converting them into goods and wares, often in the pro¬ portion of, from five to twenty for one, and fometimes a great deal more : therefore, where there are people to be employed, and fuch goods and wares can be vended with advantage, ic is extremely bad policy, to fuffer the raw mate¬ rials to be exported, on any pretence whatfoever. 4. Moft countries have fome advantages pe¬ culiar to them, arifing from the foil, climate, Vol. I. F f fituation. 434 Mr- Wimpey on the Impropriety of allowing fituation, or natural productions of the fame. The genuine and mofi: warrantable policy of any country is, to accommodate fuch advantages to the good, the well-being, and profperity of its people. Indeed, general policy renders it necefiary, to put every (late upon an equal foot¬ ing with its neighbours j for it would be deemed weaknefs or madnefs, to neglect local advan¬ tages, when every ftate, and every individual around us, were availing themfelves to the utmoft of their power, to profit by them. 5. If the exportation of raw materials is fo impolitic a meafure ; how much more fo is it, to encourage the manufactures of other nations, when they ftand in competition with our own, and have a direCt tendency to fupplant us in our market at home, and in the confumption of our own manufactures, though infinitely better accommodated to the uncertain climate of Great Britain ? This is moft unpatriotic, and, to the laft degree, culpable. Now, fheep’s wool is one of thofe peculiar local blefiings, with which Great Britain and Ireland are favoured, beyond any other part of Europe. Its quality is fuch, that every ounce of it is capable of being wrought into ufeful clothing of fome kind, which, it feems, is a rare and fingular cafe. The value of wool, when wrought into cloth, upon an average, is reckoned to be in the proportion of, five or fix to one- a Bounty , to encourage the Exportation of Corn. 4 35 one. The number of inhabitants is faid to be fomewhere from fix to feven millions, and that one third of thefe are faid to be employed and maintained by this manufacture. The proportion feems large; perhaps they are over-rated. Sup- pofe only a fixth of the people to be employed in this branch, the object is important, fo much fo, that the wifdom of the legislature has always thought it'necefiary to encourage this manu¬ facture by every means in its power. The queftion, it feems, is — “Have they judged and acted rightly ?” The grazier, perhaps, will tell you, no; for if he were permitted to export his wool, he could fell it at double the price. This is very true, and would certainly be a great prefent advantage to him : but how long would it continue to be fo ? That, perhaps, he never thought of, nor of other confequences, which would certainly overbalance even his partial advantages. If it be true, as it is generally believed, that one pack of Englijh wool enables the French to work up two packs of theirs; and if labour in France is cheaper, by, at lead, one half, than in England , they could afford to give a Shilling for a pound of wool, that is now fold for fix- pence, and fell their cloth at little more than half the price — fay two thirds at mod — that an Englifo manufacturer could do. Where, then, muff we fend our cloth to market ? F f 2 Bur 436 Mr. Wimgcy on the Impropriety of allowing But it has been faid — If the French would give us a double price for our wool, and fupply us with cloth equally good, at two thirds of what we give for it now, that is, as good fuperfine cloth for twelve {hillings a yard as what we pay eighteen {hillings for now, and fo for other forts in -proportion, is it not evident we Ihould be very great gainers by the bargain ? 1 anfwer : labour and toil are generally the effedfs of necefiity, and not of choice. Few men would be at the pains of doing any difagreeable labour for themfelves and families, if they had any fure means of doing as well, or better, without it : but what mud the man do, who is deditute of fuch means ? If he fhould fell his pound of wool to T. for a {hilling, which E. would only give him fix-pence for, would that enable him to give twelve {hillings, or fix (hillings, to T. for a yard of their cloth \ This is the true quedionj for at leafb nine-tenths of the people, perhaps ninety-nine out of a hundred, mud earn their bread, and cloaths too, by their labour. It is not the cafe of the woollen manufactures only, but of almod all manufac¬ turers and artificers whatever. It has been faid, if that branch fail, let them betake themfelves to fome other ! I fhould be happy to fee the man, who could point out the means of employ¬ ing a million of people beneficially, in any other branch whatever. The a Bounty, to encourage the Exportation of Corn . 437 The linen manufacture comes the neared to the woollen : and the weaver of the latter, might foon be brought to weave the former. But here you are under a fimilar dilemma : for not a piece could be made in Great Britain without great lofs, if foreign linens were not fubjeCt to cuftoms, almoft equal to a prohibition. The linens of Silefia , Pomerania , Saxony , Poland , Ruffia , Flanders, and Holland, pay cuftoms from eighteen to thirty, and upwards, per cent. ; and thofe of France are prohibited. If you turn to the filk manufacture, you are there protected and encou¬ raged by fimilar means. French filks are abfo- lutely prohibited : thofe of Italy pay too heavy a duty to be worn in common : the Eajl Indian are prohibited under very fevere penalties. Were it not for very heavy duties, and pro¬ hibitions, not a piece of any of thefe goods could be made here. Where then, {hall we find employment for fo many millions of people, who, upon the fcheme of a free trade and open ports, would be deprived of their ufual means of fubfifience ? Our manu¬ factures of lace are upon the fame footing : black and blond filk laces are prohibited : thread lace pays a duty, upon low goods, of four or five hundred per cent. The fmall wares of Harlem are under the fame predicament. Fil- letings, tapes, bobbins, threads of all kinds and denominations, pay duties from twenty to F f 3 thirty 4^3 Mr. Wimpey on the Impropriety of allowing thirty per cent, and fome much more; and, notwithftanding all this, the Englijh manufacturer is often puzzled to fell goods in our market at home, upon terms equally low with the foreign manufacturer. From hence it is eafy to fee, that the laws of this country, refpecting commerce, are abfo- lutely nec.eflary to its very exiftence. Repeal the laws, open the ports, and invite all the world to a free correfpondence with you, and you, at one ftroke, deprive .millions of people of the means of fubfiftence. What will you do with them then? Maintain them you cannot: for the whole income of the lands bears but a fmall proportion to the amount of the produce of their labour. The plain anfwer is — Many would be hanged, more would be ftarved, and many more would emigrate into other countries, as they did formerly into this, in hopes of employment. The grazier, by this time too, would begin to feel the effeCts of his error : for having no market to go to, but France, with his wool, and that being glutted, it is more than probable, he would fall fliort of the price he now fo much complains of at home. For wool, and corn, and all commodities whatever, are fubject to, and governed by the fame law. Every man, and every date, that is in want of any articles whatever, are ready to buy at a fair pi ice: but the a Bounty , to encourage the Exportation of Corn. 439 the feller mull fubmit to very difadvantageous terms, to prevail upon the buyer to purchafe a commodity, he has no occafion for, and knows not what to do with. 1 would beg leave juft to mention, by way of illuftration, that the grazier is now under the very fame predicament, that the farmer was near one hundred years ago. Wheat was then at little more than three (hillings a buftiel ; ex¬ portation was encouraged by a bounty to enhance its price. The experiment fucceeded, as it infallibly muft; and the very next year it was nearly double. The grazier s hopes are equally well founded. Were he permitted to export his wool, the price would immediately advance, not only for exportation, but tor nome comump- tion too ; and were it not for the ruinous effects I have defcribed, the meafure would certainly be juft and politic. But if the price hereafter fhould, by any means, fall a penny or two pence a pound below what it is now, is it poflible to conceive, that this circumftance could encourage the grazier to inceafe the quantity ; or can we reconcile it to common fenfe, that a circunri- ftance happening to a man, in any profeffion, by which he is a fufferer to a very confiderable amount, fhould animate him to extend and in- creafe his trade ? Yet this is the very argument ufed by the advocates of the bounty. A bounty, fay they, encouraged exportation ; exportation F f 4 encouraged 440 Mr. W imp ey on the Impropriety of allowing encouraged the farmer to plant ; and planting lowered the price ; the price is, therefore, lower than it was before the bounty took place ; the fall of price is owing to the bounty ; ergo, the fall of price encouraged the farmer to plant more corn! But this is a fophifm, as dangerous as it is abfurd. Were it true, that the average price of wheat has been cheaper fince the bounty than it was before, it is clearly demonftrable, that could not be the caufe. From 1730 to 1750, there were twenty fuch years of plenty as were never known ; confequently, the average price of thofe years was lower than was ever known before or fince- But it feems to have been forgotten, how necef- farily and how largely the price mud have been affedted, by the great improvements which have been made in agriculture during the laft century. Clover, turnips, and potatoes, are fuch an acqui- fition, as ultimately, by means of general im¬ provement, affedts the price of all the produce of a farm. Potatoes alone contribute, in moft families, to lefien the confumption of bread ; and in dear times, in feveral counties, among the poor, they almoft totally fupply the ufe of it. It fcarcely admits a doubt, that this ufeful root alone has lowered the average price of wheat, at lead fix-pjence a bufhel. What has occafioned the loud outcry of the fall of price in coarfe wool ? The very fame « caufe, ' a Bounty , to encourage the Exportation of Corn. 441 caufe, that would have lowered the price of corn, if exportation had not kept it up — that is — im¬ provements. In countries which have been drained, the lands inclofed, and the turnip-cul¬ ture adopted, the pafture has been amazingly increafed, and the fize of the fheep alfo : fo that a double quantity of wool has been raifed upon the fame extent of land, and the grazier wuuld be nofufFerer, though he fhould fell for half the former price : for the lofs in quality is more than compenfiited by the increafe in quantity. On 442 Mr. White on the Natural Hifory of the Cow. On the Natural History of the Cow, fo far as it relates to its giving Milk, -particularly for the Use of Man. By C. White, Efq. F. R. S. &c. Read March 12, 1783. T^JATURALISTS Teem to lay it down as a general principle, that neither animals, nor parts of animals, are primarily intended for the ufe of man, but are only capable of a fecondary application to his purpofes. Itmuft, however, be allowed that, in many inftances, the fecon¬ dary ufe is fo manifeit and important, that it cannot, with propriety, be excluded from the original defigns of the all wife Creator. And it appears to me, that the Cow in its faculty, of giving in fuch abundance, and with fo much eafe, its Milk, which forms fo excellent an arti¬ cle of aliment for the human fpecies, is a ftriking example of this fubordination to the ii.terefts of mankind. For this animal differs in fome parts of its organisation from moft others, having a larger and more capacious udder, and longer and thicker teats, than the largeft animal we know; and (he has four teats, whilfl all other animals of the fame nature, have but two. Sh§ Mr. White on the Natural ITiJiory of the Cow. 443 She alfo yields the milk freely to the hand, whijft mold animals, at leafc thofe that do not ruminate in the fame manner, refufe it, except their own young, or fome adopted animal be allowed to partake. This is a fubject which, one would have thought, had long fince been exhaufted ; but I have not been able to find any thing fatisfa&ory in the few authors I have read. I muft confefs, indeed, that my knowledge in Natural Hiftory is very confined, and fhould therefore wifh to hear the lentiments of thofe learned Members of this Society, who have made the hiftory of nature their more particular ftudy. In the fir ft place, the Cow is of that clafs of horned ruminating animals , which have cloven hoofs , four ftomachs , a confiderable length of intejlines , are furnifhed with fuet , and have no dentes incifores in the upper jaw. From the different ftru&ure of the ftomach in thefe creatures, a ruminant animal will be ferved with one- third lefs food, than another of equal bulk. Graziers are fufficiently acquainted with this. The reafon is, that ruminating animals have many and ftrong digeftive organs ; and every thing capa¬ ble of being converted into chyle, is extra&ed from the food ; which therefore yields a greater quantity of milk: but a horfe’s and .an afs’s ftomach is not fitted for this i fo that they require a much 444 Mr. TVhite on the Natural Hi/lory of the Cow. a much greater quantity of food to extraCt the fame nourifhment. A Cow’s udder is fo capacious, that it frequent¬ ly contains ten quarts of milk, which it will yield twice a day ; and it is not only remarkable for its quantity, but its quality, as fome cows will afford twelve or fourteen pounds of butter in a week. The fize and form of the teats ap¬ pear, at the firft fight, as if they were made on purpofe for the hand to draw off the milk. But this is not the only advantage they poffefs ; the thicknefs permits the lactiferous tubes to be of a larger diameter, and the length of them makes the fyphon fo much longer, and the extraction of the milk of courfe fo much more eafy. The cow having four teats is a ftriking peculi¬ arity, the number in all other animals, bearing fome proportion to the number of young ones,, they bring forth at a time, as in the bitch, the cat, the fow, &c. But the Cow does not bring forth, at a birth, more young ones, than thofe animals who have but two teats. The Cow will yield her milk to the hand as freely, and will continue to give her milk for as long a time, without any calf coming near her, as if it were permitted to fuck her con- ftantly. This is not the cafe with the afs, which, next to the Cow, is the animal we are moft accuftomed to have milked in this part of the world, Mr. White on the Natural Uijlory of the Cow. 445 world. For it is well known, that an afs will foon grow dry, if her foal is not permitted to fuck part of the milk every day, but fhe is not a ruminating animal. The human milk cannot long be preferved in the breads, without the child be permitted to fuck. It otherwife foon acquires a bad faltifh fade, and, in a fhort time, leaves them entirely ; and this will happen, if the child alone fucks, if it be not permitted to fuck four or five times a day. T hree times a day I find is, in ge¬ neral, not fufficient to keep the milk good, and in proper quantity. I do not mean to fay, that it is impoffible, in any fubjed whatever, to keeD the milk without a child fucking conftantly. 1 believe there have been indances of fudion by perfons, above the age of infancy, and even by puppies, keeping the milk for fome time; but thefe may, in fome meafure, be confidered in the light of adopted children. What I would wifh to enforce is, that the mod dexterous and mod flcilful women, who draw breads, do not keep the milk without the adidance of the child ; and when I have particularly defired them to do it, they have not been able, though they have fwallowed the milk, and repeated the fudion four or five times a day. Capivaccius, it is faid, faved the only heir of a noble family by ordering him to lie between tw.o 446 Mr. White on the Natural Hijlory of the Covt. two nurfes, in the flower of their age, and fuck their breads. Foreftus tells us, that a youth at Bologna, of twenty-nine years of age, labouring under a true marafmus, lived upon the milk of a beau¬ tiful young nurfe, of eighteen years of age, who lay in the fame bed with him, by which means his emaciated body was well redored. In both thefe indances, I fuppofe the milk was preferved, without the child being permitted to fuck. I am informed that goats, flieep, and rein deer will give milk freely to the hand, without the kid, lamb, and the fawn having accefs to them, but they are ru¬ minating animals of the fame kind with the Cow. Upon the whole, I believe we may infer, that the property of yielding milk, without the young one, or fome adopted animal, in fome meafure partaking of it, is confined to that clafs of ruminating horned animals who have cloven hoofs , four fomachs, long intefines , are furnifhed with fuet , and have no foreteeth in the upper jaw. That cows, Iheep, goats and deer are of this kind, and no others ; and that the Cow has this property in a more eminent degree than the others, owing to the capaciouinefs of her udder, and the fize, form and number of her teats. There are other ruminant animals, befides thofe I have Mr. White on the Natural Hiftory of the Cow. 447 i have mentioned, fome of which are without horns or cloven feet, and without fuet; fome have only two, fome three ftomachs, and fome are furnifhed with fore-teeth in the upper jaw j but I cannot learn that any of thefe are pofiefled of the property I have mentioned. It may, perhaps, be faid, that the Tartars ride mares, upon their excurfions for plunder, in order to live upon the milk, and probably do not take their foals with them- But this will not difprove the doctrine I have advanced 5 as the milk will hardly defert them in fo Ihort a time, as one of thefe excurfions might laft. Is there not, therefore, fomereafon to conclude that the Cow w'as, by the omnifcient Author of nature, intended to give milk, particularly for the ufe of man ? 448 Mr. Henry on the Natural Hi/lory, idc. On the Natural History and Origin of Magnesian Earth, •particularly as connected with thofe of Sea Salt, and of Nitre ; with Observations onfome of the Chemical Pro¬ perties of that Earth, which have beeny hitherto , either unknown , or undetermined. By Thomas Henry, F. R. S. &V. AT UR A LISTS and Chemifts formerly ^ divided the different kinds of earths into five genera, viz. the Siliceous, or Verifiable, the Calcareous, the Gypfeous, the Argillaceous and the Talcky. But recent difcoveries having proved the Gypfeous, to be a compound of Calcareous earth and vitriolic acid, and the Talcky, to con- fid of a mixture of Argillaceous with other earths, the genera were reduced to three. M. Baume has even attempted a farther reduction ; * and has endeavoured to prove, that two of thefe are merely modifications of the other: argillaceous earth being, according to him, a vitriolic fait, * Baume, Chymie Experimentale et Rationee, vol I. far la Terre. formed (f Magnejian Earth. 449 formed by the union of vitriolic acid with fili- ceous earth ; and the calcareous, a combination of the fame earth, with certain portions of air and water, effedted by the operation of various marine animals : and he fuppofes, that when calcareous earth is deprived of air and water, it will return to its primitive date, viz. that of fili- ceous earth. This theory is, perhaps, rather fanciful, than juft. The operations of Nature, it mull be allowed, are generally Ample — but we may fim- plefy too far; and, in forming fyftems, we fhould not fuffer our imaginations to carry us beyond thofe bounds, which our fenfes, and experiment, warrant. Calcareous earth, indeed, in the form in which we commonly find it, is a compound, confiding of earth, air, and water ; and is not cpnfidered as pure, till it be deprived, by fire, of the two laft elements. It is then, properly, pure calcare¬ ous earth ; but it does not appear that longer cal¬ cination, though it may dived it of fome of the properties of calcareous , will ever reduce it to the nature of filiceous earth. Every earth with which we meet, and which, v/hen feparated from thofe acids, or other accidental bodies, that are combined with it, refids every power we poffefs, to produce any farther decompofition, and yet differs in all, or any of its properties, from the other known ^0L* G g earths. 4;o Mr. Henry on the Natural Plijloiy, &c. earths, may be admitted to form a new gentm And, on thefe grounds, two new genera have lately been added to the other three. The bafis of fome fpars, * * * § which had been generally deem-^ ed to be calcareous earth, has been proved to differ from it, in its affinities and fome other properties ; and has been admitted to form a diftindt genus, under the title of Barytic or Pon¬ derous Earth : and another kind of earth, which though rarely, if ever, found pure in nature, y<"t abounds, in great quantities, in various forms of combination, from which it may be feparated by chemical means, has been allowed to form a fifth genus, under the appellation of Muriatic , or, Magnefian Earth. This earth was alfo, for fome time, con¬ founded with calcareous earth, of which it was fuppofed to be a modification ; for by the earlier modes of obtaining it, it was mixed with luch * x. Marmor Metallicum, Croftjl. 182. Gypfum Spa- thofurn, Spathum Fufibile, Margraf. &c. Terra ponde- rofa vitriolata. Bergman. Sciagrapbia Ponderous Spar. 2. Marmor Metallicum, Cronjledt Min. § 18. B. Calk or Cauk. 3. Gypfum cryftallifatum capillare, Cronjledt. Min. § 19. B. Radiated Cauk. 4. This earth has been alfo found of a fparry appearance, and combined with aerial acid only ; Terra ponderofa aerata. See Dr. Withering’s Experiments and Qbferaiations on the Terra Ponderofa. Phil, Tranf. vol LXX1V. p. 293. a quantity of Magnefum Earth . 451 i. quantity of calcareous matter as to dilguife its diftinguifhing features, and even make it aflume fome of the character! fries of calcareous earth. But the accurate experiments of Mefirs. Black and Margraaf, foon removed the obftacles, which impeded our more perfect acquaintance with its nature, and they procured it pure from the mixture of other earths ; in which ftate they found it fcr different, from what it had been re- prefented, that it was declared to be an earth, Jui generis. But though Dr. Black went thus far, he did not proceed to fet it at the head of a diftinct genus ; but placed it, with all thofe earths, which he has claffed together, under the general generic head of Ahjorbent Earths , of which he was content to make this a fpecies. It has fince obtained a more honourable rank, and forms a feparate genus. M. Fourcrov, who follows the arrangement of his predecefior M. Bouquet, has placed calca¬ reous, ponderous, and magneffan earths among the falts. There fhould feem to be ftrong ob¬ jections to this arrangement, even with refpeft to the two former ; though their being fapid, and foluble in water, may give fome counte¬ nance to it. But the infipidity and total infolu- bility of pure magnefia, together with its not being fuffble, by the ftrongeft heat we can apply, as will prefently be friewn, are proofs of its being a real earth. G g 2 Though 452 Mr. Henry on the Natural Hi/lory, &c. Though magnefian earth is rarely found pure, in nature, it is contained, in a faline form, in all nitre heaps, from the mother ley of which fair, it was formerly extrafted ; in the water of feveral medicinal fprings, and even in our common wells. But the fea is the great fource from which we obtain it ; in the waters of which, it is united to the marine acid, in which form it remains, after the cry ftallifation of the fea fait, and is afterwards feparated from the marine, and united to the vitriolic, acid, by a particular pro- cefs. It is then called Sal Catharticus Amarus , and, from this fait, the magnefian earth may be precipitated. One hundred parts of the fait yield, on precipitation by a mild alkali, forty- two of magnefia, united with aerial acid. If a cauftic alkali be employed, the product amounts to only twenty-five parts. But a por¬ tion of this lad may be driven off by calcination, and confifts of water, and, perhaps, Jome aerial acid, for it is difficult to procure the alkali quite free from that gas. The Magnefia is then laid to b t pure. One hundred parts of fal catharticus amarus contain only nineteen of pure Magnefia, and according to Bergman, thirty-three of vi¬ triolic acid, and forty-eight of water. But Mr. Kirvvan, who reckons only on the real acid, makes the proportion of acid twenty- four, and of water fifty-feven, parts. Sir Of Magnefian Earth. 453 Sir. T. Bergman relates,* that he procured a fait, fimilar to the fal catharticus amarus, by lixiviating the earthy matters, feparated by wafli- ing from the filver ore of Sahlberg, on the furface of which the fait forms, by expofure to the air. One hundred weight of the earth yielded fixty-five pounds of this fait. M. Mon- net, alfo, difcovered a kind of Schiftus, which on calcination, and lixiviation, furniftied a fmall portion of the fame fait. Magnefian earth may alfo be feparated, by means of vitriolic acid, from fome fpars, mar¬ bles, and other earthy and ftony bodies of which it forms a component part. The compound fpar, defcribed by Mr. Woulfe, f contains, in 100 parts, 60 of mil'd calcareous, 35 of mild Magnefia, and 5 of iron. One hundred parts of Creutzenwald (lone contain 12 of mild Magnefia. The Kolmord marble , the Pietra Ealchinay the Verde Antico , and the Griotte, a red marble from Autun , all contain fmall portions of Magnefia. The Spuma Maris , an earthy fubftance, from which the Turkey tobacco-pipes are made, is faid to confift of equal parts of magnefian, and filiceous, earths. # Bergman de Magnefia. | Phil. Tranf. vol. LXIX. p. 29, Steatite, 454 Mr. Henry on the Natural Hi/lory, &c. Steatite, or Soap-rock, contains, according to Sir T. Bergman, 17 of mild Magnefia in 100 parts of that compound. A loofe earth, found in Silefia, and defcribed by Margraaf, contains * of its weight of Magnefia. Fibrous Afbeftos contains, in 100 parts, from 1 1 to 28, and. Coriaceous Afbeftos, from 11 to 26 parts of magnefian earth, united to aerial acid. Amianthus affords 18, 6, Lapis Nephriticus 33, and Venetian Talc, an undetermined number of parts of the fame earth. Colourlefs Mica affords, on analyfis, 20 parts, in 100, hlue Schiftus 8, black Hornjlone 16, and Killas 6 parts of Magnefia. Magnefia is alfo contained, in fmall quantity, in Chryfopathium, Felt-Spar, Schoerl, and Ba- faltes : and Pumice-ftone yields of it, from 6 to 15 parts in 100. A martial muriatic fpar, found by M. Monnety at St. Marie aux MineSy and, by him, named Pifolitesy is conftituted of 50 parts of Silex, the remaining parts confifting of mild Magnefia and Iron, the proportions of which are not dq- termined. * Such are the compounds under which mag¬ nefian earth is principally found ; and I havq * Vide Kirwan’s Elements of Mineralogy, paflim. colle&ed of Magnefian Earth. 455 collected them under one view, as it may be ufeful to Tome artifts, particularly thofe con¬ cerned in the potteries, to know what earths and dones contain it, and in what proportions. Magnefia, as prepared for the fhops, would be too expenfive for the purpofes of manufactures, which may perhaps, often, be equally anfwered by ufing it in thefe combined forms. It may feem extraordinary, that a fubftance, fo plentifully diftufed in a date of combination, fhould fo rarely occur pure. * But the cafe is the fame, as the celebrated Bergman has obferved, with Clay, which is always found, in nature, com¬ bined with other fubdances. f Siliceous earth is indeed, fometimes, found pure in the form of Rock Cryjtal ; but Bergman detected fmall por¬ tions of both argillaceous and calcareous earth, in the fpecimens which he examined. Ponde¬ rous earth is generally combined with vitriolic acid, and the mod pure date, in which it has been obferved, is its combination with aerial * I have been allured by Mr. Fabroni, that Magnefia has been found pure, in the Pyrenees. This, however, was, probably, not pure, in the prefent acceptation of the term ; but pure from any other admixture, than that of aerial acid, for which magnefian earth has a ftrong attra&ion. f Clay, commonly fo called, does not, in general, con¬ tain more than from twenty-five to forty-eight parts, in jne hundred of pure argillaceous earth. Gg 4 acid, 456 Mr. Henry on the Natural Hi/lory, &c. acid. Calcareous earth has indeed been dif- covered, in the neighbourhood of Bath, in the ftate of quicklime, though, probably, not wholly diverted of aerial acid. But they are all more frequently found combined with other fubftances, forming faline compounds, or, one or more, mechanically mixed with each other, conftituting fpecies and varieties. The late Dr. Lewis, has confidered the earth which is obtained from vegetables, after in¬ cineration, and wafhing, as of the fame nature with Magnefia: and if we endeavour to trace the origin of magnefian earth, it may appear not improbable that, as all calcareous earth is the refultof the deftruCtion of teftaceous animals, fo the magnefian arifes from vegetables, which have perilhed, and undergone fome procefs in the great laboratory of nature; whereby they are reduced to this ftate. By putrefaction they are altered to a fine black Mold. And it may be that, Nature, who often operates by flow and fecret fteps, may make fuch further changes, as to convert this Mold into mag¬ nefian earth. But the origin of magnefian earth is fo con¬ nected with that of fea fait, which it always accompanies, that it may not be improper to confider them together ; as it is probable that they are both formed under fimilar circumftances, and at the fame time. Philofopher$ of Magnefian Earth. 457 Philofophers have been much puzzled to account for the original faltnefs of the Sea. Some have imagined it muft have been furnifhed by rivers, which flowing from the land, con¬ veyed with them fuch quantities of fait, from accumulations of that mineral, formed within the bowels of the earth, as to communicate, and continually fupply faltnefs to the Sea j while others hatfe attributed its impregnation to rocks of fait, fituated at the bottom of the Ocean. To both thefe opinions, objections have been made j and the learned Bifliop of Landafr, * has chofen to adopt another, viz. that the Sea was originally created fait. In fupport of this theory, and in objection to the others, efpecially to that which aflerts the origin and fupply from the land, it has been advanced, that a great part of the finny inhabitants of the ocean cannot exift in frefli water, and therefore it is not to be fup- pofed, that they (hould ever have been placed in a fltuation unfuited for their fupport. It might alfo have been added, that, there is as much difficulty in accounting for the origin of the fait, which the rivers are fuppofed to wafh down, as for its formation in the Sea. But might not the great Creator, by whole Fiat all things were produced, accommodate the firfl; inhabitants of the Sea to their temporary * Watfon’s Chemical EiTays, vol. II. fuuation ; 45 S Mr. Henry on the Natural Hiftoafis of Epfom Salt refitted the a&ion of a fire equal, in continuance and force to that of a Porcelain furnace. And M. Macquer, in the new edition of his Chemical Dictionary, declares, that he has expofed the Earth of this Salt to the greateft heat, that could be formed in the focus of M. de Trudaine’s large lens, without the leatt appearance of a tendency to fufion. M. Morveau had operated on Magnefia fepa- rated from the mother ley of Nitre, and had concluded it to be, not only in itlelf, the molt fufible of all earths, but that it even decided the fufion of other earths. • But on making his expe¬ riments with Magnefia, precipitated from Epfom Salt, he found, that on leparately expofing two Ueffian crucibles, the one containing Chalk, and the other an equal portion of Magnefia, to the ftrongeft degree of heat, that could be produced in M. Maequer’s furnace, the chalk was fufed into a beautiful tranfparent glafs, and had attacked and dilfolved the crucible, for more than half its thicknefs, wherever the Calcareous Earth had reached. But the Magnefia was formed into a round, white, opake, folid, mafs, not having the appearance even of the femivitrification of Vol. I. H h Porcelain, 466 Mr. Henry on the Natural Hijlory , &c. Porcelain, and without the lead adhefion to the crucible.* This experiment Teems to coincide with that of Bergman, but to differ, in Tome degree, from that related by Macquer. Mr. Magellan, whom we have very defervedly - ranked among our honorary members, has lately favoured me with an account of fome curious experiments, made in London, which may ferve to clear up this point. 1 fhall therefore comply with his requeft to lay an extract of his letter before the Society ; and then beg leave to add a few remarks on the fubjedt, and on fome other of the chemical pro¬ perties of Magnefian Earth, which are either un¬ known or undecided. “ I "have a fadt,” fays Mr. Magellan, “ to *c relate, which may be agreeable to you, con- nufements, literary ones recommended . _ , Animal { ubftances regenerated - „ 325»338 * - bones, 329; nerves, 333; arteries, 334; crabs and worms, .335 Ancients, knew that water would cooj more ealily, which had been heated - , ' - 262 * - that the evaporation of fluids produces cold .... . 20£ ' that air is diflolved in water, by means of heat and agitation , - why the lower air is more heated than the hi8h" ' . - - - 26S ' why hail-ftones fuddenly concrete - 268 - lhat air is Separated from water by freezing 269 Ancients, knew that water will rife to its level in pipes 269 - compared with moderns as to the imitative arts 40c Arthur’s feat, pebbles found there * Arts, a general acquaintance with them neceflary to excellence 77 — — plan for extending them . - - 84 B, I N 1> E X. B. Page Barnes, Dr. on poetry - - - 54 - - on the affinity fubfifting between the arts - 72 Barrow, Dr. his obfervaiion on general fcholars 72 Be fait es - - - - - 38 Baume, quoted - - - 32, 33, 449, 462 Beauty in the imitative arts, defined, and accounted for 121 Bell, Dr. on the generation of cold - - 1 Bifmutb, forms ftriae on its furface r - 40 Bi.ack.lock, Dr. an account of him - - 166 BlinaniJ's, obfervations on by Mr. Bew - - 159 Brindley, what advantage he might have received from education - - 8 3 Brown, Mr. of Virginia, his method of making faltpetre 203 — Mr. author of the EfTay on the Charadterillics, quoted - - - - 230 C. Carew, his account of aged perfons in Cornwall - 359 Cavallo, his account of the electricity of the atmo- fphere - - 398 Caufenuay Giants, deferibed - - 38 Charades, riddles*, &c. why agreeable - 1 1 3 Chemiflry recommended to the commercial ftudent 24 _ _ _ adopted the fymbols of altronomy 254 Cheselden, Mr. couched a young man born blind, with fuccefs - - - - 178 Chiaro-fcuro, a modern invention - - 410 Chry ft alligation, by Dr. Eason - - 29 Cicero, his account of the effeCt of Carbo’s Oratory 69 Colours, inftances of perfons who cannot accurately dif- tinguiffi them - - “ 1 82 Confiia of feelings, the caufe of pleafure - 1 57 Contraft, in poeoy, painting and mufic, agreeable 119 Copper, why it has the fymbol of Venus - 256 Corn, a bounty upon it improper - - 413 Couy INDEX. Page Cow, adapted to the ufe of man - - 442 - - has four ftomachs, long inteftines, &c. - 443 — — has four teats, gives her milk to the hand, &c. 444 Curiofty , one caufe of pleafure in viewing fcenes of diftrefs - - - - Cujloms, necefiary in the prefent date of Europe 43, Cylinder-wire, its application to corn, bark, fand, &c. D. Diverfions, of hunting, {hooting, &c. reconcileable with humanity 341 the human mind naturally inclined to them 345 they conduce to health and pleafure - 346 do not diminish the pleafure of the animals 349 often purfued by perfons the moll humane and benevolent - Dreams , of a blind man refpefting vilible obje&s Dyers, but few of them chemijls E. Earth, magnefian , its origin . . . — - calcareous, not convertible into filiceous » — - divifion of, into five genera Eason, Dr, on chryftallization Eajl, the beautiful patterns from thence, accounted for - its poetry fine, becaufe defcribing natural fcenes Eledricity , its influence in evaporation . - — - - in fufpending vapour Engraving, a modern invention Epic poem, demands unity of a&ion Evaporation , from a heated human body - - « - in vacuo 355 181 27 455 449 450 29 27; 276 398 ' 400 412 J26 3 39<> Execution of malefadors, why attended by fo many perfons 148 Exercife, its elfedt in preventing the fcurvy - J06 . - of the mind, pleafant - - 1io - - a caufe of the pleafure felt in contemplating fcenes of dillrefs - ,-5 F. INDEX. I F. Pagg Fijb — oil and fat, ufed by the Samoides, Efquimaux, &c. as food - - - _ ic»* Fixed air, machine for impregnating water, &c. with it 52 Flint , probably compounded of water, and an acid 3 5 Fly-futtle, not yet ufed in the Norwich manufafture 84 Fogs, caufes of them - - 404 Pordyce, Dr. experiments on cold - 1 Fulham, account of falt-petre works formed there 201 Future Jlate, differently reprefented by different people 286 G. Gardening, its flyle and tafle among the ancients 297 Gardens, hanging ones, of Babylon, defcribed - 301 ■ - of Lucullus, defcribed - - 308 — ; - of Pliny, his Laurentine Villa, defcribed 312 • . . modern, defcribed and recommended - 322 Gentleman, the importance to him of a tafle for literature 9, 10 Glauber, his attempts to make falt-petre - 19^ Greenland, account of feven Dutch failors who wintered there 1633 - - '93 Gypfum, five forts of - - - 32 Hall, Rev. Mr. on the influence of tafle on morals 223 Haygarth, Dr. his machine for impregnating water, &c. with fixed air - - - 32 Heat, latent , not unknown to the ancients - 267 Heathen religion, favourable to fculpture - 407 Henry, Mr. on the advantages of literature and philofo- phy, and their confiftency with commercial purfuits 7 - - - on the prefervation of fea water by quicklime 4 t ■ - on the natural and chemical hiflory of mag- neflan earth - - - 448 Hiflory, particularly Englifh, ufeful to a tradefman t6 • - requires a good imagination, in order to be read with pleafure - - 391 Horace / I •* N D E X. Horace, his description of a true poet Hudfons Bay , wintered in by Monck, and James J- Jam^s, captain, winters in Hudfon’s Bay Ice, modern way of making it in the Eaft Indies Imagery, how far it conftitutes the eflence of poetry Imagination, neceflary to corredt judgment - — - defined ... - - - - amazingly flrong in children Page 59 90,92 9* 266 56 378 382 393 285 Indians, American, their mufic and poetry plaintive Johnson, Dr. remarks on his criticifms upon Milton 66, 71 Iron, why it has thefymbol of Mars - 257 IJIands, more healthy than continents - 366 Italy, peculiarly favourable to longevity - 358 Jupiter, his fymbol accounted for - - 247 - — - why applied to exprefs tin - ? 258 K. Keeping, in painting, little underftood by the ancients 41 1 Kirshaw, Mr. on the Comparative merit of the ancients and moderns - 405 Kirwan, Mr. quoted - - 454,470 Knowledge, general, neceflary to particular - 73 • - mathematical, its connexion with Imagina- . 387 tion L. Laniaff, biftiop of, quoted - - - 457 Laodjcape painting, ancient, very bad - 411 Language, originally poetical - - 58 Laocoon, flatue of, defcribed - - 123 l.aplanders , account of their diet by Lin n/eus - 99 Ltnen, bleached by acids - - - 240 • - manufadlures, the duties they pay when imported 437 Likkjeus, his accountof the diet of the Laplanders 99 Litttaiure and philofophy, foften the rigours of war 8 Literature I 1ST D E & Page Literature and philofophy, multiply the fources of pleafure 9 _ _ * are ufeful to the gentleman 10 — - — - - to the merchant 11 . - - . furnilh agreeable amufement 14 London , bills of mortality, quoted from 1728 to 1758 362 Longevity, obfervations on by Dr. Fothergill 355 - - tables of - - 557* 35s> 36° — - — depends on air. Sec. 365 ; foods, &c. 367 ; mo¬ tion and reft, 369; fecretions, &c. 369; affeclions of mind, 369 M. . "Machine , for impregnating water, &c. with fixed air 5 2 Machines, generally invented by perfons not educated to mechanic employments - - 82 Magellan, Mr. his letter to Mr. Henry on the infufi- bility of magnefia - 4 66 Magnefan earth, its natural and chemical hiflory 448 ■ . — various combinations in which it is found - - - 452 - - - — its origin - - - 455 - - infufibility afcertained - 465 . . — - - folubility in acids when calcined proved 469 - - - not phofphoric - - 473 Manners, rude and ferocious, in mountainous and uncul¬ tivated countries - - - 281 Manufactures, cotton in particular, depend upon machines 80 Mars, his fymbol explained - 253 Medici, the family of, their charader by lord Orrery 238 Memory, peculiarly ftrong in blind perfons - 175 Merchant, importance of talle for literature in him 1 1 Metcalf, John, though blind, a celebrated furveyor and projector of highways - - 172 Milton defended 71 - fuperior to Homer and Virgil in unity of adion 130 Mind, human, improperly faid to confift of feveral diftind powers - - - - 377 Miners , 1 INDEX. Page Miners , in general hardy and ferocious - 283 Modulation, regular, eflential to poetry » 60 - different in different languages - 68 Monck, captain, winters in Hudfon’sBay - 90 Moves, Henry, Dr. account of him - |68 Muriatic acid , recommended for bleaching linens 242 N. Newton, Sir Isaac, poffefled a vigorous fancy 389 O. Oratory, capable of imagery and elevation, as much as poetry - - - 6 1 Ofiris , the fupreme deity of the Egyptians, his fymbol 246 P. Pallas, Mons. his account of illands between Kam- fkatka and America - 9S Parry, the blind mufician, account of him - 167 PaJJions, their influence and ufe in direfling the judgment - - 381 Pebbles, produced by irregular chryffallization • 37 Percival, Dr. his tribute to the memory of Charles de Polier, Efq. - - 287 Phyjtiian, what neceflary to conftitute a fkilful one 386 Plan, for extending arts and manufaflures at Manchefter - g^ Pleafure, of contemplating fcenes of diftrefs accounted for - - . Polier, Mr. de, on the pleafure of mental exercile ■■ ■ - tribute to his memory Polite Arts, tafte in, neceflary for a manufaflurer Pct-ajh , ufe of in making falt-petre Qi Quicklime, applied to the prefervation of fea water — — quantity requifite — its adlion accounted for - I i 144 1 10 287 28 217 4* 49 49 R. VOL. I. INDEX. R. Page Regijlers, oeeonomical, recommended - ’ - to know the Hate of population 137 - - to difcover thieves, &c. - 138 * - - - to know the quantity of corn annually produced - Rfid, Dr. quoted ... jgg Rein deer, their blood drank warm, how it afts as a pre- fervative from the fcurvy - - 104 Religion, how far influenced by the fcenery of a country 279 Rembrandt, charadter of his paintings - 410 Repofitory, propofed for chemical and mechanical arts 85 Reynolds, Sir Joshua, quoted - - 409 Rhyme, why agreeable - _ - 1 j 3 Roi, Mr. d e , his theory of evaporation - 3915 S. Saturn, his fymbol explained - - - 232 — — why ufed to reprefent lead - - 257 Saltpetre, treatife on by Mr. Massey - 184 • . — - caufes of the ill fuccefs of trials for making it in England - - 185, &c. ■■ ■ what principles enter into its compofuion 188 — - how the peculiar acid, neceflary to form it, is generated - - - 191, &c. ■ . the influence of putrefaction in forming it 193 ————— caufes of its abundance in India - 193 » the old and approved method of obtaining it 203 ■' " makers of, in Paris, incorporated - 208 — ■ account of the author’s experiments 209 — . — method of making it in Paris - 21 1 — — - tranflation, on the ufe of pot-afh in making it 217 * - — procured, ready formed, upon the earth, in Warm climates - 461 Salt-fea, its natural hiftory as connected with that of magrielian earth ... 456 Salt- INDEX, Page Salt-fea, or lay, better than (hat made from rocks or fprings - 43 Samoides, drink the warm blood of rein deer - 58 Saunderson, Dr. account of him - 163 Scenery, of a country, its influence upon the inhabitants 271 Scurvy, occafioned by fait meats, and fpirituous liquors, 100 4°7 4* 82 33 9 in cold climates Sculpture, promoted by the heathen religion Sea-vjater, its compofition Smith, Dr. on the wealth of nations, quoted - Spar, Derbylhire, how compounded Spectator, No. 41 1, quoted - - Spitsbergen, account of feven Dutch failors who win¬ tered there 1638 — — - - eight Englilhmen ditto Eaft, four Ruffians winter there 93 9+ 96 104 167 Spirituous liquors, unfavourable to the fcurvy Stanley, Mr. the blind mufician, account of him Steam, a powerful principle, lately applied to different ufes 79 Ster ne, quoted ... Stones, precious, originally in fufion - 34 ■ - - contain three principles 36 Sumy’s Memoirs, extra# from, relating to an intended cabinet - . _ . g^ Sun, the origin of its aflronomic fymbol - 246 Symbols, ufed firft by affronomers, and afterwards by chemifts - 245 Sympathy, the fource of many noble pleafures - 134 T. Tajle, its influence upon the ftrong poetic character 65 - its analogy to the moral feelings, aflerted 134 •- - its influence not favourable to morals - 223 * - diftinguiffied from the moral fenfe - 226 - - may fliew the beanty of virtue, without giving the power ... 228 Tap, £> 3$ N X. Tafe, Its connexion with genius — - : — — - with religion PagS 233 23 3 — — inftances.in which it produces misfortune or im¬ morality - - - 234 — — effefls of it at Athens - - 236 ' Tempcji at fea, agreeable to behold from the Pnore 149 Towns, large, unfriendly to longevity - 362 Tur got, Monf. his letter to Mr. Wimpey - 135 •— - - remarks on preventing the exporta¬ tion of com - - - 429 U. Undemanding, influenced by the imagination and paffions 381 Unity, of adtion in painting and poetry, why agreeable 126 v. Vapour, eight hundred times lighter than air - 397 • - quicker from water eledhified - 398 Venus, the fame with Ifis ; her fy mbol accounted for 250 Verfe, regular , its origin accounted for - 64 Volta, Mr. his remarks on eledlricity - 399 W. MW, its horrors foftened by literature - 8 Whale's fritters, eaten by perfons wintering at Spitzbergen 93 Wheat , itsprice in 1687 . - - - 4lS _ _ often fown injudicioufly, and why - 426 Whitehurst, Mr. his inquiry into, &c. quoted 367 Wimpey, Mr. againft the bounty on corn - 413 Windfor tables, quoted ... 420 Woollen manufacture, the numbers employed in it 435 Y. Youths, two, Tailored from confumptions by human milk - - 446 Yti.i. 1 S Zsfxxsi JJJL • Vrd* .1 ^ ff, Cl A ; •- L tttl \ I