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



1171 [EMERSON (William)] SHORI COMMENT on SIR I. NEWTON'S PRINCIPIA ; containing Notes 

 on some Difficult Places, 5 plates, 8vo. oldhf. calf gilt , with boolqdate of Philip 2nd Earl Stanhope, 

 F.E.S.,2sQd 1770 



1172 TRACTS : containing Mechanics, the Projection of the Sphere, and the Laws of Centripetal 



and Centrifugal Force; new Ed., with LIFE, by W. BOWE, pr. , plates, Svo. old calf (joints cracked), 



4s 1793 



The author began life as a poor boy, and walked all the way from Durham to London. ' He refused to become a member 



of the Royal Society because, as he said, 'it was a d d hard thing that a man should burn so many farthing candles as 



he had done, and tlien have to pay so much a year for the honour of F.R.S. after his name '.' D. N. B. 



1173 EMTAGE (W. T. A.) INTRODUCTION to the MATHEMATICAL THEORY of ELECTRICITY and 



MAGNETISM, diagrams, cr. Svo. cl., 3s Qd (p. 7s Qd) 1891 



1174 LIGHT. 232 woodcuts, post Svo. cl., 3s (p. 6s) 1S96 



1175 ENCKE ( Johann Franz) GESAMMELTE MATHEMATISCHE undASTRONOMisciiEABHANDLjJNGEN, 

 3 vols. Svo. sewn, 10s (p. M. 20.) Berlin, 1888-9 



INHALT : I. Allgemeines betreffend Rechnungsmethoden : II. Methode der kleinsten Quadrate; Fehlertheoreti.schc 

 Untersuchungen : III. Astronomische und optische Abhandlungen. 



1176 - Die ENTFERNUNG der SONNE von der ERDE, aus dem Venusdurchgange von 1761 herge- 

 leitet : Der VENUSDURCHGANG von 17692 vols. post Svo. in 1, new hf. cl., 10s Qd Gotha, 1822-4 



The author's first published works, and important as giving the first approximately correct solar paralUx (6".5~1). The 

 second work forms a continuation of the first. 



1177 Tiber den AUSNAHMEFALL einer DOPPELTEN BAHNBESTIMMUNG aus denselben drei 



geocentrischen Ortern, 4to. (pp. 27), sewn, 2s Qd Berlin, 1850 



11 78 ENCYCLOPAEDIA BRITANNICA, 8th Ed.. Vol. I: the DISSERTATIONS, thick 4to. cl., 

 7s Qd 1853 



This volume, complete in itself, was not published in the following editions, and contains dissertations on the history 

 of science and philosophy by DUGALD STEWART, SIR JAMES MACKINTOSH, ABP. WHATELY, JOHN PLAYFAIR, F.R.S., SIR 

 JOHN LESLIE, and J. D. FORBES, F.R.S. 



1179 METE-OPOLITANA, or UNIVERSAL DICTIONARY of KNOWLEDGE, on an Original 



Plan, edited by EDWARD SMEDLEY and HUGH JAMES and HENRY JOHN ROSE, prr., with Index 

 Volume, 600 fine plates, 29 thick vols. 4to. calf gilt (fine set], 3. 3s (p. 58. in cl.) 1829-45 



Among the eminent writers of this cyclopedia, originally proposed by S. T. COLERIDGE, and still valued for the excellent 

 original contributions (especially on the exact sciences) which it contains, are Coleridge himself, Sir G. B. Airy, Thomas 

 Arnold (including his History of Rome), Charles Babbage, F.R.S., Peter Barlow, F.R.S., Bp. Blomfield, Sir R. H. Bonny- 

 castle, T. L. Donaldson, Bp. Hampden, Sir John Herschel, T. H. Home, Henry Kater, F.R.S., Dionysius Lardner, Prof. 

 de Morgan, Card. Newman, Dean Peacock, F.R.S., Charles Richardson (including the whole of his English Dictionary), P. M. 

 Roget, F.R.S., Bp. Stanley, Serjeant Talfourd, Abp. Whately (including his Logic, Rhetoric, etc.), and Dr. Whewell. 



1180 : ENCYCLOPAEDIA OF ASTRONOMY : comprising Plane Astronomy, by PETER 



BARLOW, F.R.S. ; Nautical Astronomy, by HENRY KATER, F.R.S. ; Physical Astronomy, by SIR 

 J. F. W. HERSCHEL ; and on the Figure of the Earth, and on Tides and Waves, by SIR G. 13. 

 AIRY, I*} plates and maps, 4to. cl., 5s Qd 1848 



1181 - EXPERIMENTAL PHILOSOPHY, by PETER BARLOW, FRANCIS LUNN, pr., P. M. 

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1182 MECHANICAL PHILOSOPHY : Mechanics, Hydrodynamics, Pneumatics, and Optics, 



by PETER BARLOW, F.R.S. ; and Sound and Light, by SIR J. F. W. HERSCHEL, IS plates, thick 4to. 

 d.,QsQd 1848 



1183 PURE MATHEMATICS, by PETER BARLOW, DEAN PEACOCK, DIONYSIUS LARDNER, 



pr., SIR G. B. AIRY, H. P. HAMILTON, pr., A. LEVY, T. G. HALL, pr., AUGUSTUS DE MORGAN, 

 and HENRY MOSELEY, 17 plates, thick 4to. cl., 8s Qd 1848 



1184 PRACTICAL ENGINEERING, and Allied Trades, ed. by JOSEPH G. HORNER, Vols. I-IV 



(A Fil), withQ4plates, and numerous other illustrations, 4 vols. 4to. cl., r. e., 17s Qd [1905-6J 



ENCYCLOPEDIE v. DIDEROT, ante. 



1185 ENFIELD (William) INSTITUTES of NATURAL PHILOSOPHY, Theoretical and Experimental, 

 with 11 folding plates, 4to. contemporary tree-calf extra (FINE COPY), 8s Qd 1785 



1186 ENGINEER (The), and MACHINIST'S ASSISTANT : Plans, Sections, and Elevations of Station- 

 ary, Marine, and Locomotive Engines, Water Wheels, Spinning Machines, Tools, etc. etc., with 

 Descriptions and Practical Essays, 136 steel plates, and numerous woodcuts, 2 vols. folio, hf. brown 

 morocco, 10s Qd 1863 



1187 ENGINEERING, an Illustrated Weekly Journal, edited by ZERAH COLBURN, W. H. MAW, 

 and the late JAMES DREDGE, COMPLETE from its beginning in 1866 to 1893, with MANY HUNDREDS 

 OF WOODCUTS (many of large size), 56 vols. roy. 4to. vv. 1-52 hf. -bound, and vv. 53-6 sewn as issued, 

 25. 1866-93 



This paper, which immediately it was started obtained, and has held to the present time, the foremost place among 

 professional papers, gives the fullest information on the theory and the best illustration of the practice of Engineering at 

 home and abroad. Articles by all the foremost Engineers on the Iron and Steel Manufactures, Railways, Agricultural 

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 to make up many of the later ones, as most of the numbers are out of print. 



1188 ENGLEFIELD (Sir Henry Charles, F.R.S.) On the DETERMINATION of the ORBITS of 

 COMETS, according to Boscovich and Laplace, with new and complete Tables, and Examples of the 

 Calculation by both Methods, 4to., boards, uncut, Qs 1793 



1189 ENGLISH (Douglas) PHOTOGRAPHY for NATURALISTS, illustrated, roy. Svo. buckram, 2sQd 1901 



A COMPLETE SET TO 1896 : 



1190 ENGLISH MECHANIC (The), and WORLD of SCIENCE, COMPLETE from the beginning in 

 1865 to August, 1896, copiously illustrated, 63 vols. 4to. 52 vv. cl., 2 vv. hf. bound, and the rest 

 sewn, 12. l'?s 1865-96 



Particularly strong in astronomy and microscopy. 



1191 EBDMANN (Hugo) LEHRBUCH der ANORGANISCHSN CHEMIE ; with 4 coloured plates and 276 

 woodcuts, Svo. cl., Qs Qd (p. M. 18. Braunschweig, 1898 



