HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 269* 



5290 WEBSTER (Thomas, F.R.S., Q.C.) The PRINCIPLES of HYDROSTATICS, 2nd Ed., enlarged, 

 with woodcuts, 8vo. calf gilt, t. e. g., 2s Qd Cambridge, 1838 



5291 THIRD EDITION, woodcuts, post 8vo. cl., 2s Qd 1847 



5292 The THEORY of the EQUILIBRIUM and MOTION of FLUIDS, plate, 8vo. cl., or, hf. cl., 2s Qd 



Cambridge, 1836 



5293 ANOTHER COPY, with PRINCIPLES of HYDROSTATICS, '352 vols. 8vo. in 1, hf. calf gilt, 



3s Qd ib., 1836-5 



The above works were all unknown to the author's biographer in D. N. B. 



5291 WEBSTER (William) COMPENDIOUS COURSE of PRACTICAL MATHEMATICKS, particularly 

 adapted to the Use of the Gentlemen of the ARMY and NAVY, ivith numerous copperplates and 

 tables, 3 vols. 16mo. old calf gilt (nice copy), with bookplate of Philip 2nd Earl Stanhope, F.fi.S., 

 Qs Qd 1730 



Including Fortification. Gunnery, Navigation, and the Theory of Working a Ship. 



5295 The DESCRIPTION and USE of a COMPLETE SETT or CASE of POCKET-INSTRUMENTS : 



containing the Construction of the several Lines laid down on the Plain-Scale, and Sector ; with 

 their Application, corrected Ed., 4 copperplates, 8vo. (pp. 61), sewn, 4s 1768 



5296 WECKER (Johann Jakob, M.D. ; Basel) EIGHTEEN BOOKS of the SECRETS of ART and NATURE, 

 being the Summe and Substance of Naturall Philosophy, methodically digested ; now much 

 augmented and inlarged by DR. R. READ. A like work never before in the English Tongue ; 

 with engraved title by GAYWOOD, containing 7 portraits, and numerous woodcuts, folio, old pan- 

 elled calf, newly rebacked (one or two II. of Table missing, also names scribbled on printed title) ; 

 VERY RARE, 1. 5s Simon Miller, 1660 



The ' Secrets ', which have been collected from about 150 different authors, include ' secrets of metals ; of glass ; of jewels, 

 and how to counterfeit them ; of meteors, as hail, rain, snow, thunder, lightning, tempests, and the like ; of sciences, 

 naturall magick, mathematicks, musick, and astrology ; secrets mechanicall ; secrets of sports, delights and recreations,' 

 etc. etc. etc 



This English translation, which contains many original contributions by the editor, is very rare ; the Hibbert copy 

 fetched 5. 5s. At end is a 3-p. list of Simon Miller's publications. 



5297 Les SECRETS et MERVEILLES de NATURE, recueillies de divers Autheurs. Livre non 



settlement necessaire aux curieux, ains a tous ceux qui font profession des Arts Liberaux, et 

 SUBTILES INVENTIONS . . . reveu, corrige, et augmente; with numerous woodcuts, thick 12mo. 

 old vellum, 12s Qd Rouen, 1651 



' A very curious work, much sought after on account of the singular doctrines and secrets of every science contained 

 therein '. Libri Catalogue. 



' Get ouvrage est toujours recherche des curieux, pour les choses singulieres qu'il renferme '. Biogr. Univ. 



5298 WEDGWOOD (Hensleigh ; philologist; police magistrate, Lambeth) The PRINCIPLES of 

 GEOMETRICAL DEMONSTRATION, deduced from the Original Conception of Space and Form, 

 diagrams, post 8vo. cl. boards (scarce), 4s 1844 



5299 WEDGWOOD (Josiah, F.R.S., Potter to his Majesty] ADDITIONAL OBSERVATIONS on MAKING 

 a THERMOMETER for measuring the HIGHER DEGREES of HEAT, with plate, 4to. (pp. 19), sewn, 

 Qs Qd 1786 



An account of the author's ingenious invention of a pyrometer, still employed in some potteries, consisting of cylinders 

 of prepared clay, the extent of shrinkage of which indicates the degree of heat in the furnace. 



5300 WEDGWOOD (Thomas ; son of the above ; the first photographer ; benefactor of Coleridge) 

 EXPERIMENTS and OBSERVATIONS on the PRODUCTION of LIGHT and HEAT from different Bodies, 

 by HEAT and ATTRITION, 4to. (pp. 20), sewn, 5s 1791 



' The earliest suggestion of the general law, since established, that all bodies become red-hot at the same temperature. 

 It is remarkable as indicating a considerable power of research when he was only 20 years of age.' Major L. Darwin, RE. 



5301 : LITCHFIELD (R. B.) TOM WEDGWOOD, the FIRST PHOTOGRAPHER: an Account of his 



Life, his Discovery, and his Friendship with SAMUEL TAYLOR COLERIDGE, including Coleridge's 

 Letters to the Wedgwoods, and an Examination of Accounts of alleged EARLIER PHOTOGRAPHIC 

 DISCOVERIES, with 4 portraits, 5 views, and fs. of handwriting, 8vo. buckram, t. e. g., 5s Qd 

 (p. 8s nett) 1903 



Containing a reprint of Thomas Wedgwood's paper in the Journal of the Royal Institution in 1802, ' An Account of a 

 Method of copying Paintings upon Glass, and of making Profiles, by the agency of Li^ht upon Nitrate of Silver. 

 Invented by T. Wedgwood, with Observations by H. Davy 'the first process for producing pictures by the action of 

 light on a sensitive surface. 



The book is also of far more than scientific interest, and full of suggestive passages on the literature and thought of the 

 time. 



5302 WEGMANN (Edward, C.E.) The DESIGN and CONSTRUCTION of DAMS, including Masonry, 

 Earth, Rock-Fill, Timber, and Steel Structures, also the principal Types of Movable Dams, 5th 

 [latest] Ed, revised and enlarged, ivith 100 plates (many folding), 120 smaller illustrations, and 

 25 tables, 4to. cl., Us (sells 1.1* nett) New York, 1907 



One of the best works on the subject. 



5303 The WATER-SUPPLY of the CITY of NEW YORK, with 148 plates, plans, and maps (the 



many folding ones LINEN-MOUNTED), and 73 smaller illustrations, 2 vols. 4to. hf. green morocco 

 gilt, cl. sides, 1. 5s (p. 2. 2s nett in cl.) ibidem, 1890 



This valuable work is specially interesting for the historical information it contains, which includes a full account of 

 the Old Croton Aqueduct. 



5304 WEIDLER (Johann Friedrich ; P.R.S.) HISTORIA ASTRONOMIC, sive de Ortu et Progressu 

 Astronomic, thick 4to. old calf gilt (fine copy], with bookplate of Philip 2nd Earl Stanhope, 

 F.R.S., 10s Qd Vitembergcc, 1741 



' On y voit eclater beaucoup d 'erudition, principalement sur les premiers chapitres qui concernent les premieres traces 

 de 1'astronomie '. Montucla. ' C'est la seule histoire complete de 1'astronomie qu'on ait eue jusqu'a present, avant que 

 celle de Delambre eut paru ; elle est remplie d'erudition et de recherches '. Lalanue. 



5305 WEILER (W.) WORTERBUCH der ELEKTRICITAT und des MAGNETISMUS : ein Hand- und 

 Nachschlagebuch ; with 816 illustrations, post 8vo. cl., 7s (p. M. 13.50) Leipzig, 1898 



