440 HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 



8662 GREGORY (Duncan Farquharson ; first editor of ' Cambridge Mathematical Journal ') 

 EXAMPLES of the PROCESS of the DIFFERENTIAL and INTEGRAL CALCULUS, with 4 folding plates, 

 8vo. calf gilt, 4s Cambridge, 1841 



8663 SECOND [LAST] EDITION, by WILLIAM WALTON, with 4 folding plates, large 8vo. cl., 6s 



ib., 1846 



8664 ANOTHER COPY, prize calf gilt, Is 



Prize copy t > Dr. James Bell, F.R.S., signed by PROF. DE MORGAN. 



' A work which produced a great change for the better in the Cambridge mathematical books. It is the first in which 

 constant use is inade of the method known by the name of the separation of the symbols of operation, and the author has 

 enlivened its pages by occasionally introducing historical notices of the problems discussed.' D. N. B. 



8665 , and William WALTON: TREATISE on the APPLICATION of ANALYSIS to SOLID 



GEOMETRY, with 3 plates : HYMERS (John, Rector of Brandesburton, F.R.s. ; founder of 

 Hymers College, Hull) TREATISE on CONIC SECTIONS, 3rd Edition, enlarged, with 4 foldina 

 plates 2 vols. 8vo. in 1, hf. calf gilt, 4s ib., 1845 



8666 SECOND [LAST] EDITION, with 3 plates, 8vo. boards, 5s ib., 1852 



8667 ANOTHER COPY ; also : Hymers (John, D.D., F.R.S.) TREATISE on ANALYTICAL 



GEOMETRY of THREE DIMENSIONS, containing the Theory of Curve Surfaces, and of Curves of 

 Double Curvature; 3rd Edition, with 6 plates 2 vols. 8vo. in 1, hf. calf, Is ib., 1852-48 



' The first treatise in which the system of solid geometry is developed by means of symmetrical equations, and a great 

 advance on those of Leroy and Hymers '. D. N. B. 



8668 GREGORY (George, D.D , Prebendary of St. Pawn's) The ECONOMY of NATURE explained and 

 illustrated on the Principles of Modern Philosophy, with 46 plates, 3 vols. 8vo. contemporary hf. 

 calf gilt (nice copy), with Bp. Watson's Calgarth Park booklabel, Is Qd 1796 



8669 SECOND EDITION, with considerable Additions, 56 plates, 3 vols. 8vo. old hf. calf gilt 



(sound copy), with Bp. Watson's Calgarth Park booklabel, 8s Qd 1798 



8670 ANOTHER COPY, mottled calf extra (fine copy), 10s 



8671 LECTURES on EXPERIMENTAL PHILOSOPHY, ASTRONOMY, and CHEMISTRY, with 35 



plates, 2 vols. fcap. 8vo. in 1, hf. calf, 5s 1808 



8672 GREGORY (Olinthus Gilbert, LL.D., F.R.A.S.) ACCOUNT of some EXPERIMENTS made to 

 determine the VELOCITY with which SOUND is TRANSMITTED in the ATMOSPHERE, 4to. (pp. 19), 

 sewn, with author's inscr., 4? Qd Cambridge, 1824 



' His treatise on mechanics and his experiments to determine the velocity of sound were his most important contri- 

 butions to physical science.' D. N. B. 



8673 , and Henry LAW, C.E. : MATHEMATICS for PRACTICAL MEN : a Commonplace Book of 



Pure and Mixed Mathematics ; 4th Edition, by JOHN RADFORD YOUNG, with 13 folding plates, 

 besides woodcuts, large 8vo. cl., 6s 1862 



8674 GREGORY (William, Prof. Chemistry, Edin.) On the COMPOSITION of the PETROLEUM of 

 RANGOON, with Remarks on Petroleum and Naphtha in general, 4to. (pp. 7), sewn, with author's 

 inscr., 2s Edin., 1835 



8675 HANDBOOK of ORGANIC CHEMISTRY: a new and greatly enlarged Edition of the 



' Outlines of Organic Chemistry ' ; 3rd [last] Edition, much extended, post 8vo. cl., 3s Qd 1852 



' Having been a favourite pupil of Liebig at Giessen, Gregory did much to introduce his researches into this 

 country.' D. N. B. 



He introduced a process for making hydrochlorate of morphia from opium which came into general use. 



8676 LETTERS to a CANDID ENQUIRER on ANIMAL MAGNETISM, thick post 8vo. cl., 5s 1851 



Almost exclusively on ' occult science ', and mentioning a number of interesting cases. 



8677 GRELLE (Friedrich) ANALYTISCHE GEOMETRIE der EBENE ; with 91 woodcuts, 8vo. cl., 2s 



Hannover, 1861 



8678 GREN (Friedrich. Albert Karl; founder of ' Annalen der Physik') PRINCIPLES of MODERN 

 CHEMISTRY, systematically arranged, translated, with Notes and Additions, concerning later 

 Discoveries, by the Translator, with Tables [on Chemical Attraction, etc.], with 1 copperplates, 

 2 vols. 8vo. boards, uncut, 7s Qd 1800 



Containing descriptions and illustrations of the chemical apparatus in use at the time. 



8679 GRESLEY (William Stukeley) GLOSSARY of TERMS used in COAL MINING, with 138 

 woodcuts, post 8vo. cl., 2s Qd (p. 5s) 



8680 [GRETSCHEL (Heinrich)] Das TELEPHON, der PHONOGRAPH, und das MIKROPHON ; with 19 

 woodcuts, post 8vo. (pp. 44), sewn, 3s Leipzig, 1878 



Interesting as an early work on the phonograph. ' Das Telephon ' since 1878 has been admirably translated (by August 

 Command ?) into the vulgar tongue as der Fernsprecher. 



8681 [ J ZWEITE AUFLAGE, umgearbeitet und wesentlich vermehrt ; with 70 woodcuts, 8vo. 



(pp. 139), sewn, 2s ibidem, 1883 



8682 GREW (Edwin Sharpe) The GROWTH of a PLANET, with 6 plates, and numerous diagrams, 

 post 8vo. cl.,3sQd (p. 6s) 



#683 [GREW (Nehemiah, M.D., F.R.S.)] NEW EXPERIMENTS, and USEFUL OBSERVATIONS concerning 

 SEA- WATER MADE FRESH, according to the PATENTEES INVENTION, by a FELLOW of the 

 COLLEDGE of PHYSICIANS, and of the ROYAL SOCIETY, 4th Edition, sm. 4to. (pp. 13), sewn (rare), 

 7s Qd 1684 



'It speedily went into ten English, besides French and Italian, editions. The process of boiling and condensing, 

 though approved by him, did not originate with him.' D. N. B. 



684 : RECUEIL d'ExpERiENCES et OBSERVATIONS sur le COMBAT qui procede du MELANGE 



des CORPS [par N. GREW] ; sur les SAVEURS et sur les ODEURS [par ROBERT BOYLE] ; et sur le 

 SANG et le LAIT [par A. VAN LEEUWENHOEK] , 12mo. fine copy in contemporary calf gilt (rare), 

 12s 1679 



Grew's paper is a translation of his 'Of the Nature, Causes, and Power of Mixtures', originally read before the Royal 

 Society, Dec., 1674. He was an early and able vegetable physiologist, and probably the first man to observe sex in plants. 



