360 HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 37, PICCADILLY, W. 



7037 COTES (Roger, pr.. Prof. Astron., Cantab., F.R.s. ; friend of Sir Isaac Newton) De DescensU 

 Gravium, de MoTU Pendulorum in Cycloide, et de Motu Projectilium ; folding plate, 4to. 

 (pp. 37), sewn, Gs Cantabrigiw, 1770 



7038 Harmonia Mensurarum, sive Analysis et Synthesis per Rationum et Angulorum 



Mensuras promotj« ; accedunt alia Opuscula Mathematica, edidit et auxit Robertus Smith ; 

 with diagrams and table, 4to. large and sound copy in contemporary calf (rare), £1. Vis Qd 



ibidem, 1722 

 Editor's presentation copy, with inscription 'J. Hill. Mnnus Celeberriiui Editoris. Nov. 14. 1737.' 



7039 Another Copy, calf {sound copy), with auto, and inscr. of John Hailstone, F.R.S. , £1. 12* 6t/ 



' Including a reprint of the Logometria, with extensive developments and applications of the fluxional calculus.'— D.W./i. 

 ' Cotes's J/armonia Men^xirarum was the earliest work in which decided progress was made in the application of 



logarithms and of the properties of the circle to the calculus of fluents.'— Pro/, de Morgan. It is also the first complete 

 treatise on the integral calculus, and first contains the well-known theorem in trigonometry known by his name, which 

 depends on the forming of factors of x^— 1. The second part of the work contains ' .Estimatio Errorum in mixta Mathesi 

 per variationes Partium Trianguli plani et sphjerici', ' pointing out the best way of arriving at the most probable mean 

 result of astronomical observations. It is remarkable for a partial anticipation of the 'method of least squares', as well 

 as for the first employment of the system of assigning different weights to observations' {D. N. 1!.), also ' de Methodo 

 Differentiali Newtoniana ' ; ' Canonotechnia '; ' de Descensu Gravium', etc. etc. 



7040 Hydrostatical and Pneumatical Lectures, published with Notes by Robert Smith 



[D.D., Master of Trinity] , first edition, with 5 plates, 8vo. old calf gilt, 8s 6d 1738 



7041 Second Edition, tvitho plates, 8vo. sound copy in contemporary calf, Is Qd Cambridge, 1147 



7042 Another Copy, contemporary calf {sound copy), with auto, and fine armorial bookplate 



of William Cowper, Clerk of the Parliaments {cousin of the poet), Qs 

 7043 Third Edition, carefully revised and corrected, with 5 plates, Svo. fne copy in old calf, 



with the Marquess Camden^s bookplate. Is 6d 1775 



7044 Another Copy, boards, uncut, 5s 



'The course of experiments for which they were composed was among the earliest of the kind given in England.'— I>.iV^.i'. 

 ' Had Cotes lived, we might have known something I '—Sir Isaac Newtun. 



7045 COTTAM (Arthur, f.r.a.s.) Charts of the Constellations, from the North Pole to between 

 35° and 40^ of South Declination, comprising ^Q folding plates, atlas folio, cL, 10? 6c^ (p. £2.) 1889 



' Each constellation is shown complete in a single sheet, and in every ease the naked-eye stars in the surrounding 

 asterisms are filled in up to the borders.'— Pre/t(ce. 



7046 COTTE (Louis, pretre de VOratoire : de r Academic royale des Sciences) Traite de Meteorologie, 

 contenant I'Histoire des Observations Meteorologiques ; un Traits des Meteores; I'Histoire et la 

 Description du Baronietre, du Thermometre, et des autres Instrumens Meteorolooiques ; les Tables 

 des Observations Met^orologiques et Botanico-M^t^orologiques ; les Resultats des Tables et des 

 Observations ; la Methode pour faire les Observations M6t4orologiques ; with 14 plates, thick 4to. 

 contemporary French calf gilt, 155 Imprimerie Royale, 1774 



' Cotte s'etait surtout applique a cette partie de la physique qui traite de I'atmosphere et des phenomenes qui s'y 

 developpent, et il devint, pour ainsi dire, le criateAir d'une science nouvelle, la mctrorologie, dont les elements jusqu'a lui 

 n'avaient guere consiste qu'en des observations eparses et ([uelques aper^us incoherents.' — Biogr. Gin. 



7047 COTTON (A.), et H. MOUTON, Institut Pasteur: Les Ultramicroscopes et les Objets 

 Ultramicroscopiques ; with tvoodeuts, 8vo. sewn, 2s 6d (p. F. 5 nett) 1906 



7048 COUBNOT (Antoine Augustin) Exposition de la Theorie des Chances et des Pro- 

 BABILITES ; loith plate, 8vo. calf gilt {scarce), \2s 6d 1843 



A classic work on the subject, often quoted by Prof. Todhunter in his ' History of the Theory of Probability.' 



7049 De I'Origine et des Limites de la Correspon dance entre 1' Algebre et la Geometrie ; 



with 3 folding plates, 8vo. sewn {scarce), 10s 6d 1847 



7050 Traite Elementaire de la Theorie des Fonctions et du Calcul Infinitesimal ; 



with Q folding plates, 2 vols. 8vo. scored calf gilt {one leaf mended, but a nice copy), 6s 1841 



7051 Another Copy, 2 vols. 8vo. in 1, h'f. calf, 5s 



7052 Deuxieme Edition, revue et corrigee ; with 7 folding plates, 2 vols. 8vo. hf. calf gilt 



{scarce); Us 1857 



7053 COTJIITANVAUX (Franqois Cesar le Tellier, Marquis de, Due de Doudeauville) Journal 

 du Voyage sur la Frigate I'Aurore, pour essayer par Ordre de I'Academie, plusieurs Instru- 

 mens relatifs a la Longitude ; mis en Ordre par A. G. Pingre et Charles Messier ; with fine 

 plates of scientific instruments, etc., and folding map, 4to. old calf {joints cracked), 10s 6d 



Imprimerie Royale, 1768 

 'Courtanvaux composa plusieurs instruments inconnus ou oublies, qui furent d'une grande utilite a la commission.' — 

 Bi"gr. Gen. 



7054 CO WE (James, Vicar), The Meteorological Register kept by, at Sunbury Vicarage, 

 Middlesex, from 1795 to 1839, a lithographic reproduction f^om the Original MS. on 545 pp. [with 

 Intro, by G. J. Symons, f.r.s.], with views of the Vicarage garden, and plans, folio, cl., uncut 



(ONLY 90 copies privately PRINTED), 12^ 6d ' 1889 



Valuable as covering a period particularly deficient in meteorological records. 



The cure of Sunbury has given a remarkable record of longevity, Mr. Cowe, the above observer, having been Vicar from 

 1790 to 1S42 ; on his death the benefice was offered to, but refused by, Sydney Smith, and was then held till 1S98 by 

 H. G. Vigne, pr., two successive incumbencies thus covering 108 years ! 



The list of subsciibers to the above facsimile includes Richard Doddridge Blackmore, the novelist, who market- 

 gardened at Twickenham near by. 



7055 COWPER-COLES (Sherard) Elektrolytisches Verfahren zur Herstellung para- 

 BOLiscHER Spiegel : Elektrolytische Verzinkung, iibertragen von Emil Abel— 2 parts roy. 

 8vo. (pp. 17 and 37), with 49 woodcuts; sewn, 2s Halle, 1904-5 



7056 COX (Homersham ; Muir Central College) Principles of Arithmetic, with diagrams, fcap. 

 8vo. cl. [out of print), 3s Cambridge, 1885 



Explaining the different methods in the order of historical development. 



7057 CRACKNELL (A. G.) Practical Mathematics [with Answers to Examples], diagrams, 

 cr. 8vo. cl., 2s 1900 



