276 HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 



5421 WILL (Heinrich) Outlines of the Course of Qualitative Analysis followed in the GiesseN 

 Laboratory, with Preface by Baron Liebig [trans, from the German], with 5 tables, 8vo. cl. 

 (scarce), 5s 1846 



' Containing an accurate description of the course I have followed in my laboratory with great advantage for 25 years.' 

 —J. V. Liebig. 



5422 WILLLA.MS (C. Greville, f.r s.) Handbook of Chemical Manipulation, with Supple- 

 ment, illustrated, thick cr. Svo. cl., 5s (p. 15s) 1857-79 



The author was the discoverer of lepidine, cyanine, and hydrocarbon isoprene. 



5423 WILLIAMS (Charles Wye) The Combustion of Coal, and the Prevention of Smoke 

 chemically and practically considered, 2nd Ed., with diagrams, Svo. cl., with author's inscr. to 

 F.-M. Sir John Burgoyne, 5s 6d 1841 



One of the earliest works on the economically and hygienically important question of smoke abatement ; the result of 

 experiments made for the City of Dublin Steam Packet Co. 



5424 WILLIAMS (John, F.R.A.S., F.s.A.) Observations of Comets, from b.c. 611 to a.d. 1640, 

 extracted from the Chinese Annals, trans., with Intro., and Appendix, comprising the Tables 

 necessary for reducing Chinese Time to European Reckoning, and a Chinese Celestial Atlas, 

 with numerous fs. plates, 4to. mottled calf extra, g. e., by de (Joverly [fine copy) ; scarce, £1. Is 



for the author, 1871 

 • By far the most elaborate work of its kind extant. Great use has been made of this valuable compilation in the 

 revision of the pages which now follow.' — Chambers ^ Handbook of As'roiiomy. 



5425 WILLIAMSON (Alexander William, f.r.s.) Chemistry for Students, 3rd [last] Ed., 

 enlarged, ivith woodcuts, thick post 8vo. cl., 3s (p. 8s 6d) Clarendon Press, Oxford, 1873 



5426 A Plea for Pure Science : Inaugural Lecture, University College, London, Oct. 4, 1870, 



8vo. (pp. 26^ sewn, 2s 6^ 1870 



5127 WILLIAMSON (Benjamin, t.c.d., f.r.s.) Elementary Treatise on the Differential 

 Calculus, with numerous Examples, 3rd or 4th Ed., enlarged, luith diagrams, post Svo. cl., 3s Qd 

 (p. ]0s6rf) 1877 or '80 



5428 Seventh Edition, enlarged, with diagrams, post Svo. cl., 4s 6d (p. 10s Qd) 1889 



5429 Elementary Treatise on the Integral Calculus, with numerous Examples, 3rd Ed. 



enlarged, iviih diagrams, post Svo. cl., 4s (p. 10s Qd) 1880 



5430 Sixth Edition, enlarged, with diagrams, post Svo. cl., 5s (p. 10s Qd) 1891 



5431 Introduction to the Mathematical Theory of the Stress and Strain of Elastic 



Solids, illustrated, post Svo. cl., 2s Qd (p. 5s) 1894 



5432 , and Francis Alexander TARLETON, t.c.d. : Elementary Treatise on Dynamics, 



containing Applications to Thermodynamics, 2nd Ed., enlarged, post Svo. cl., 5s (p. 10s Qd) 1889 



5433 WILLIS (Robert, pr., f.r.s., Jacksonian Professor, Cantab.) Principles of Mechanism, ivith 

 247 woodcuts and diagrams, Svo. cl., 4s 1841 



5431 Second [last] Edition [enlarged and rewritten], with 374 woodcuts and diagrams, Svo. 



cl. (scarce), los 1870 



* In this work he reduced the study of wliat he called pure mechanics to a system. It is the earliest attempt to 

 develop, with anything like completeness, the science of machines considered from the kinematic point of view, without 

 reference to Ihe forces which are at work or to the energy which is transmitted.' — D. N. B. 



Professor Willis, like Dr. Whewell, was one of the rare examples of a mathematician who cared for Pointed Architecture, 

 however natural, on its constructional side, such an interest might seem. His study however went far beyond Dr. Whewell's, 

 and he was, with Mr. Freeman, one of the ablest amateur authorities on English architecture, and his advice w&s of much 

 value in the restoration of many of the Cathedrals. 



5435 WILLSFORD (Thomas) Natures Secrets, or the Admirable and Wonderfull History of the 

 Generation of Meteors, particularly describing the Temperatures and Qualities of the Four 

 Elements, the Heights, Magnitudes, and Influe5»ces of the FiXT and Wandring Stars, tlio 

 Efficient and Final Causes ot Comets, Earthquakes, Deluges, Epidemicall Diseases, and Prodigies 

 of precedent Times ; registred by the Students of Nature, their Conjecturall Presages of the 

 Weather, from the Planets mutuall Aspects, and Sublunary Bodies : with the Proportions and 

 Observations on the Weather-Glass, with Philosophica'll Paraphrases rendered explicitely, 

 usefull at Sea and Land, ivith portrait, at. 46, by P. Vaughan, and large woodcut of a weather- 

 glass, 12mo. FINE COPY in mottled calf, £1. 15s Nath. Brook, 1658 



A VKRY RARE VOLUME, unknowu to Watt, Allibone, and Lowndes, nor included in Mr. Symons's very copious list of 

 English works on meteorology. Eighty-nine pp. of the work are devoted to ' Predictions of the Weather '. The author 

 seems to be ignorant of Galileo's discoveries, and still explains various phenomena caused by the pressure of air by the 

 horror vo.cui. 



A coloured COPY: 



5436 WILME (Benjamin P., c.E.) Hand-Book for Mapping, Engineering, and Architectural 

 Drawing, ivith 43f)ie coloured plates and maps, and 39 woodcuts, 4to. hf calf. Is Qd (p. £2.) 1846 



Valuable for containing early examples of railway drawings. * Of great value '. — Allibone. 



5437 WILSON (Benjamin, f.r.s.) Series of Experiments relating to Phosphori and the Prismatic 

 Colours they are found to exhibit in the Dark ; with Translation of Two Memoirs on the same, 

 from the Bologna Acts, by J. B. Beccari [sic'\, 4to. sewn, Ss 6^ 1775 



' This woik was communicated to several foreign learned bodies, and was the subject of a memoir by Leonhard Euler, 

 read at the Academia Scientiarum lmi)erialis at St. Petersburg, and of a Letter from G. B. Beccaria '. — D. N. B. 



5438 WILSON (Ernest, m.i.e.e.), and Francis LYDALL : Electrical Traction, withnumerous 

 plates and other illustrations, 2 vols. Svo. cl., £1. Is (p. £1. 10s nett) 1907 



5439 WILSON (George, Chymist) Compleat Course of Chymistry, containing not only the best 

 Chymical Medicines, but also a great variety of Useful Observations, 4th Ed., very much enlarged, 

 with the Author's Experiments upon Metals, with portrait mt. 78 by v. d. Gucht, and 7 copperplates 

 of chemical characters and apparatus, Svo.fne copy in old panelled calf (rare), 15s 1721 



The last 29 pp. contain experiments on the transmutation of metals, which are not included in the foregoing editions. 



