HENRY SOTHERAN & CO., 140. STRAND, W.C, and 43, PICCADILLY, W. 625 



Optics, continued : — 

 iJjoO NEWTON (Sir Isaac, p.r.s.) : Optk^ue de Newton : Another Copy of Marat's Transla- 

 tion {as ftillu described in No. 12548), 2 vols. 8vo. HANDSOMELY BOUND IN CONTEMPORARY 

 French crimson morocco extra, hand-tooled hacks^ silken linings and flyleaves^ g. e., by 

 Derome (a very fine copy), £i. 4s 



This, like all the other works of this monster of the Terror, is very rare (v. Nos. 113S5-91, o.ntc). The 'Opticks' were 

 previously translated into French by Pierre Coste in 1725, and reprinted in 1722. This translation appears however to 

 have been very unsatisfactory, for the editor characterizes it as ' defectueuse, infidele et obscure, servile et barbare '. 

 Marat's translation is by no means a literal one, and should be of special interest, as it was Marat who lirst, in France, 

 dared to attack Newton's corpuscular theory. 



Marat's translation was apparently unknown to Sir David Brewster, as he only mentions that of P. Coste. 



12551 Lkctiones Optic.e, Annis MDCLXIX ad MDCLXXf, in Scholis Publicis lial>it;e: et 



nunc primuni ex MSS. in Lucem ediUe, editio princeps ; with 24 folding plates, 4to. sewn, 

 uncut {sound copy) ; RARE, £\. \s Londini, Guil. Innys, 1729 



12552 Another Copy, old vellum (fine copy), £1. 5* 



12553 Another Copy, contemporary calf, newly rebacked, £1. 4s 



Consisting of two parts, 'de radiorum lucis refractionibus ', and 'de colorum origine '. Only the first part was 

 translated Into Entrlish. 



• Before the end ol ItiOfl he had worked out the details of his discovery of the decomposition of a ray of white light into 

 rays of different colours by means of a prism. The complete explanation of the theory of the rainbow followed from this 

 discovery. These disco vories formed the subject matter of the lectures which he delivered as Lucasian professor from 

 lt)01> to 1071 . . . The .MS of his original leetures was printed in 172!) under the title Lectiones Opticte.'—W. W. R. Ball. 



'This valuable work contains many beautiful propositions, and interesting and instructive experiments, which are not 

 to be met with in any modern treatise on optics.' — Sir David Brewster, F.R S. 



ARITHMETICA UNIVERSALIS; 



12554 r ] Arithmetica Universalis; sive de Corapositione et Kesoliitione Arithmetica Liber, 



eui aecessit Halleiana ^Equationum RADICES arithnietiee inveniendi Methodus, editio 

 princeps ; ivith numerous diagrams, sm. 8vo. contemporary calf {joints neatly mended, othenvise 

 a FINE COPY), with inscr. ' E Libris B : Baker Sane: Trin : Coll: Cant. Alumni, 1707' on flyleaf, 

 and bookplate of John Kentish {Jjnitarian) ; RARE, £1. 10* Cantabrigice, 1707 



12.555 Another Copy, old hf calf gilt, £1. 85 6c? 



12556 Another Copy, contemporary panelled calf gilt (very sound and fresh COPY), 



with old engraved bookplate of John Peyto Verney, Lord Willoughby de Broke, £1. 12* 6rf 



This work was published by William Whiston, pr., k r.'s., who 'extracted a somewhat reluctant permission from 

 Newton to print it. Among several new theorems on various p ants in algebra and the theory of equations Newton here 

 enunciates the following important results. He explains that the equation whose roots are a solution of a given 

 problem will have as miny roots as there are different possible cases. . . . He extends Descartes's rule of signs to give 

 limits to the number of imaginary roots He uses the principle of continuity to explain how two real and unequal roots 

 may become imaginary in passing through equality . . . and shows that imaginary roots must occur in pairs. . . . 

 The most interesting theorem contained in the work is his attempt to find a rule (analogous to that of Descartes for 

 real roots) bv which the number of imaginary roots of an equation can be determined.' — W. W. R. Ball. 



12557 Editio Secunda, in qua nmlta immutantur et emendantiir, nonnulla adduntur; with 



numerous diagrams, 8vo. old calf {newly rebacked) ; RARE, 15* Londini, 1722 



This edition, the last published during the author's lifetime, is almost as rare as the first. It was unknown to Prof, 

 de Morgan. 



12558 Editio Nova, cum Commentario JoHANNis Castillionei ; tvith T, folding platesy 



2 vols. 4to. lid calf, \0s 6d Amstedodami, 1761 



12559 Another Copy, 2 vols., contemporary mottled calf gilt {fine copy), 14s 



Besides the editor's preface (pp. 14), and the copious connnentary (pp.* 288), the above edition contains 'Addita- 

 me<itu n vel dn S dutione en C mscnictione iE piationutn, etc. : Scripta varia ex Transactionibus Philosophicis et aliunde 

 excerpta [by Edmund Halley, John Colson, Abraham de Moivre, Colin Maclaurin, A. G. Kastner, K. J.. 

 Uos< ovicH, and others (pp. >34)J. 



12560 [ ] Universal arithmetick: or a Treatise of Arithmetical Composition and Resolu- 

 tion. To which are added, Dr. Halley's Methol of finding the Roots of ^Equations Arithmeti- 

 cally; translated by Joskph Raphson, f.r.s., and revised and corrected by Samuel Cunn, first 

 English edition, with 8 plates, sm. 8vo. old calf, newly rebacked {rare), I5s J. Senex, 1720 



12561 Skcond Kdition, very much corrected, with Opiates, 8vo. old calf, rebacked. Is Qd 



apud eundem, 1728 



12562 Another Copy, contemporary panelled calf , 85 



12568 [Third and Last Edition], to which is added, a Treatise on the Measures of Ratios, 



by James Maguire, the whole illustrated and explained in a Series of Notes, by Theaker 

 Wilder, d.d., t.c.d., with 8 plates, thick 8vo. hf calf gilt, or, old calf 85 6rf VJQ^ 



COMMERCIUM EPISTOLICUM : 



12564 CoMMERCiUM Epistolicum D. Johannis Collins at aliorum de Analysi promota : 



Jussu Societatis Regiae in Lucem e litum [Cura JoANNis Keill, s.r.s.] ; editio princeps ; with 

 diagrams, 4to. contemporary panelhd calf, newly rebanked (very rare), £2. 12s %d 



Londini, Typis Pearsonianis, 1712 

 This is the celebrated report drawn up by order of the Royal Society, and consisting of a selection from the corre- 

 spondence ot John C >llins, f.r s with some of the moat celebrated mathematicians of the time, which substantiated Keill's 

 chart?e against, Leibniz of having derived the fundamental ideas of his calculus from papers by Newton, said to have been 

 comn.nnicated to him through Collins and Oldenburg. 



Although greatly biassed in Newton's favour, the work is nevertheless • a repertory of the utmost value to the history 

 of science ' {D. N H.), and is now excessively rare. 



The above is, according to Gray's Bibliography of Newton, the earliest of the two issues of the fir.st edition. 



12565 [Edith) Secunda], et jam una cum ejusdem Recensione praemissa, et Judicio 



primarii, ut ferebatur. Mathematici subjuncto, iterum impressum ; with diagrams, 8vo. fine and 

 tall copy in old calf qilt (rare) €1. 12« 60? ibidem, J. Tonson et J. Watts, 1722; 



12566 Another Copy, cl.,with MS notes by, and bookplate of, Prof Lloyd Tanner, F.E.S.,£l. 10& 



The first issue of the second edition. 



