426 HENKY SOTHEKAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, W. 



S352 GENTLEMAN'S MATHEMATICAL COMPANION (The), from 1824 to 1827 ; containing 



Answers to the last Years Enigmas, Charades, Rebuses, Queries, and Questions, also New ones, 



Paper on Resolving Numerical Cubic Equations ; Solutions of two Diophantine Problems, etc. 



etc., with numerous diagrams, thick 12mo. old calf, Is 6d [1824] 



Including contributions by Sir John Leslie, f.r.s.e. (' Remarks on the Light of the Moon and the Planets'), William 



8353 GEOGRAPHICAL CONGRESS (Sixth. International ^ Report of the, held in London, 

 1895, edited by John Scott Keltie and Hugh Robert Mill, f.r.s., with folding maps, arid 

 numerous other illustrations, thick roy. 8vo. cl.. Is 6d (p. £1. Is) 1896 



Containing contributions by the editors, 'j. Y. Buchanan, f.r s., G. G. Chisholm, Sir Daniel Gill, f.r.s., A. J. 

 Herbertson, G. v. Xeumayer, Proff. J. J. Rein and J. Thoulet, etc. etc. ; also List of Members, and Catalogues of the Exhibition. 



8354 SOCIETY of LONDON (ROYAL), PUBLICATIONS of the, viz., Proceedings 



from their beginning in 1855 to 1878, 22 v. hf. calf: — New Series, 14 v. [vv. I — X, 

 hf bd; vv. XI— XIV, c/.], 1879-92: Journal, New Series, 1893-1910, 13 v. cl, the 

 rest in parts — with numerous engravings and maps, d612. 12^ 1855-1910 



8355 GEOLOGIST (The) : a Popular Monthly Magazine, edited by S. J. Mackie, f.g.s., f.s.a., 

 complete from its beginning in 1858 to its conclusion in June, 1864, with numerous plates of fossils 

 (majiy folding), woodcuts, and coloured maps, 7 vols. 8vo. hf. calf, £3. 35 1858-64 



This publication was incorporated in 1864 with the 'Geological Magazine' {q. v. ante). 



8353 GEOMETRICAL DRAUGHTSMAN (The) : Practical Diagrams and Designs, with the 

 Application of Geometry to Industrial Drawing and Designing, by Different Authors and 

 Draughtsmen, 7 plates, and 126 woodcuts, 8vo. cl., 35 1892 



8357 GEPPERT (Julius; Univ. Giessen) Die Gasanalyse und ihre physiologische Anwendung 

 nach verbesserten Methoden ; with plate, and 13 woodcuts, roy. 8vo. sewn, 2s 6d Berlin, 1885 



8358 GERARD (— , fumiste) L'Art d'EMPECHER les Cheminees de Fumer, et de Chauffer 

 economiquement toute Espece d'Appartemens ... les Theories des Anciens et Modernes 

 Caminologistes sur les Causes et les Remfedes de la Fumee, etc. etc. ; with 10 foldinq plates, post 

 8vo. boards, uncut {scarce). Is M , Bruxelles, 1828 



8359 GERARD (Eric, Univ. Liege) Lecons sur I'Electricite, professees h- I'lnstitut Electro- 

 technique Montefiore. Liege, 7^ Edition [refondue] ; with 832 illustrations, 2 thick vols. roy. 8vo. 

 sewn, \2s (p. F. 24 nett) 1905 



8360 GERHARD (William Paul, c.e.) Hints on the Drainage and Sewerage of Dwellings, 

 with 282 woodcuts, 8vo. hf. morocco {title stamped), 4s (p.. 125 Qd in cl.) New York, 1884 



8361 Sanitary Engineering, post 8vo. d., 3* (p. 5* Qd nett) ib., 1898 



8362 Sanitary Engineering of Buildings, Vol. I, with Q plates, and 103 other illustrations, 



roy. 8vo. buckram, 6s ib., 1899 



8363 GERHARDI (C. H. W.) Electric Meters : their Construction and Management, with 220 

 illustrations, 8vo. cl., Is (p. 10s Qd nett) [1906] 



8364 GERHARDT (Charles Frederic) Recherches sur les Combinaisons Ammoniacales du 

 Platine, 8vo. (pp. 32), sewn, 2s Qd 1850 



8365 Traite de Chimie OrgANIQUE; with woodcuts, 4 vols. 8vo. hf. calf gilt (SCARCE), £1. Is 



Didot, 1853-6 

 This great work embodies all the author's ideas and discoveries, and for the first time elaborates his system of chemical 

 types, the basis of structural chemistry. It is out of print, and becoming increasingly rare. 



8366 GERSTNER (Franz Anton Ritter v.) Die innern Communicationen der Vereinigten 

 Staaten von Nordamerika, herausgegeben von L. Klein ; with 34 folding plates, and 

 folding map, 2 vols. 4to. cl. (scarce), £1. Is Wien, 1842-3 



Valuable as an early and copious account of American Railway Enginekring. 



'Gerstner stellte 1S38 in Nordamerika umfassende Studien liber die Eisenbahnen an, welche vom speciell technischen 

 Gesichtspunkte aus bearbeitet wurden in ' Die innern Communicationen der Vereinigten Staaten von Nordamerika '.'— 



Brockhaus. 



8367 GESNER (Abraham, m.d., f.g.s.) Practical Treatise on Coal, Petroleum, and other 

 Distilled Oils, with numerous woodcuts, 8vo. cl., 5s 6c? New York, 1861 



8368 Second Edition, revised by George Weltden Gesner, with lithographic view of Oil 



Creek, Pa., and numerous woodcuts, roy. 8vo. cl. {scarce), 8s 6d (p. 15s) ib., 1865 



The author was the discover of keroseal gas, and well-known for his geological survey of Nova Scotia. 



8369 GESNER (Conrad, ' the German Pliny ') The Practise of the New and Old Phisicke, 

 wherein is contained the most excellent Secrets of Phisicke and Philosophie, deuided into foure 

 Bookes .... treating very aniplie of al distillations of WATERS, of oyles, balmes, Quintessences, 

 with the extraction of artiticiall saltes, the use and preparation of Antimony, and potable 

 gold. Gathered out of the best and most approued Authors. Also the Pictures and maner to 

 make the Vessels, Furnaces, and other Instruments thereunto belonging ; newly corrected 

 and published in English, by George Baker, with numerous fine woodcuts, sm. 4to. original 

 limp vellum {back cover slightly damaged, and a few II. browned, otherwise A FINE AND tall 

 COPY) ; rare, £5. 5s Peter Short, 1599 



Baker's first tran.slation of this work was issued in 1576, under the title of ' The Newe Jewell of Health '. 

 • Baker's own preface is a good piece of English prose. . . . The book treats of the chemical art, a term used by Baker 

 as synonymous with the art of distillation,' etc. etc.— D. N. B. 



8370 GEUBEL (Heinrich Karl) Grundzuge der wissenschaftlichen Chemie der unorgan- 

 ISCHEN Verbindungen, 8vo. sewn, 3s Frankfurt a. M., 1847 



8371 Die physiologische Chemie der Pflanzen, mit Riicksicht auf Agricultur ; zugleich 



eine wissenschaftliche Widerlegung der Ansichten Liebig's und Schleiden's, 8vo. sewn, 

 3s 6c? «6., 1845 



Chemistry on an Hegelian basis ! 



