HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 381 



7451 ECKHARTSHAUSEN (Karl v.) ENTWURF zu einer ganz NEUEN CHIMIE durch die ENT- 

 DECKUNG eines ALLGEMEINEN NATURPRINZIPS, wodurch sich das PHLOGISTISCHE SYSTEM der 

 alten, und das antiphlogistische der neuen Chimisten als zwey Extreme in ein Mittelsysterr 

 vereinigen lassen, u. s. w., 16mo. contemporary hf. calf (rare), 15s Regensburg, 1800 



The author's speculations are based on an imaginary ' Naturstoff, zugleich Feuerstoff in der Extension, Kaltestoff in 

 der Concentration, und aus dieser Materie lassen sich alle Naturerscheinungen erklaren.' P. 294. 

 The work was unknown to Poggendorff. 



7452 EDER (Josef Maria, Technische Hochschule, Wien) AUSFUHRLICHES HANDBUCH der PHOTO- 

 GRAPHIE ; with 4 fine plates and 986 woodcuts, 3 vols. 8vo. in 2, hf. roan, Is Qd (p. M. 27 sewn) 



Halle a. S., 1884-6 



7453 EDGAR (Joseph Haythorne ; pr., quondam Lieut. R.A.), and G. S. PRITCHARD : 

 NOTE-BOOK on PRACTICAL SOLID or DESCRIPTIVE GEOMETRY, 4th Edition, by ARTHUR G. MEEZE, 

 with diagrams, 12mo. cl., 2s Qd 1880 



7454 EDGEWORTH (Richard Lovell, F.R.S. ; Member of Irish Parliament; father of Maria 

 Edgeworth) Ess AY on the CONSTRUCTION of ROADS and CARRIAGES, with 4 folding plates, 8vo. 

 boards, uncut (scarce], with auto, letter from Prof. F. Y. Edgeworth to F.- J. Jervis- Smith, pr., 

 F.JK.S.,l2sQd 1813 



The versatile author, whose habit of pollakigamy according to Sir Leslie Stephen resembled John Buncle's, invented 

 what was probably the first telegraph, in order to announce early racing results between Newmarket and London for his 

 smart friend Sir Francis Delaval. The telegraph was doubtless a semaphore system, and was afterwards set up by the 

 Government, under his superintendence, between Dublin and Galway. The fear of French invasion waning it was 

 dropped. 



7455 EDINBURGH PHILOSOPHICAL JOURNAL; exhibiting a View of the Progressive 

 Discoveries and Improvements in the Sciences and the Arts ; conducted by SIR DAVID BREWSTER 

 and ROBERT JAMESON, First Series, Vols. 1-9, 11, 13, and 14, with numerous copperplates, 

 12 vols. 8vo. hf. calf (binding damaged), 1. Is Edin., 1819-26 



7456 EDINGER (Albert ; Univ. Freiburg i. B.) BEITRAGE zur KENNTNIS RINGFORMIGER ORGAN- 

 ISCHER STICKSTOFFVERBINDUNGEN und deren Beziehung zur Constitution der stickstoffhaltigen 

 Alkaloide (Habilitationsschrift) ; with diagrams, 8vo. sewn, 2s Freiburg i. B., 1892 



7457 EDSER (Edwin) HEAT, for Advanced Students, with 214 illustrations, 12mo. cl., 2s (p. 4s Qd) 



1899 

 - LIGHT, for Students, with 306 illustrations, 12mo. cl., 3s Qd (p . 6s) 1902 



7459 EDWARDS (E. Price) The EDDYSTONE LIGHTHOUSES (New and Old), with Abridgement of 

 Smeaton's Narrative by T. WILLIAMS, 5 plates, 8vo. cl., 2s 1882 



7460 EDWARDS Jun. (Frederick) On the VENTILATION of DWELLING-HOUSES, and the UTILIZA- 

 TION of WASTE HEAT from OPEN FIRE PLACES, with 19 plates (2 folding), roy. 8vo. cl., 4s 1868 



According to the preface the first attempt to use the heat escaping by the chimney. 



7461 SECOND EDITION, including Chapter on LONDON SMOKE and FOG, Modern Fire Places, 



etc., with 17 plates (some different from those above), roy. 8vo. cl. (o. p.), 6s 1881 



7462 EDWARDS (Joseph) DIFFERENTIAL CALCULUS, with Applications and numerous Examples : 

 an Elementary Treatise, with 94 diagrams, post 8vo. cl. (fresh copy), 5s (p. 10s Qd) 1886 



7463 DIFFERENTIAL CALCULUS for BEGINNERS, diagrams, cr. 8vo. cl., 2s Qd (p. 4s Qd) 1893 



7464 - ELEMENTARY TREATISE on the DIFFERENTIAL CALCULUS, with Applications and 



numerous Examples, 2nd Edition, enlarged, with 125 illustrations, 8vo. cl., with auto, letter from 

 the author, and auto, and MS. matter by F. J. Jarvis-Smith, pr., F.R.S. , 8s Qd (p. 14s) 1892 



7465 INTEGRAL CALCULUS for BEGINNERS, with Introduction to the Study of DIFFERENTIAL 



EQUATIONS, 50 diagrams, cr. 8vo. cl., 2s Qd (p. 4s Qd) 1894 



7466 EDWARDS (Robert, M.I.C.E.) The MECHANICAL ENGINEER'S HANDY OFFICE COMPANION, 

 12mo. cl., 2s 1898 



7467 EDWARDS (William Seymour) COALS and COKES in WEST VIRGINIA : a Hand-Book on the 

 Coals and Cokes of the Great Kanawha, New River, Flat Top, and adjacent Coal Districts, 8vo. 

 sewn, 2s Cincinnati, 1892 



7468 EGGER (Kajetan; Munich) LEITFADEN zu VORLESUNGEN uber populare EXPERIMENT AL- 

 PHYSIK, 2. verbesserte Auflage ; with Q folding plates, 8vo. hf. bound, 5s Milnchen, 1829 



Interesting for containing full descriptions and illustrations of a number of contemporary physical apparatus. 



7469 EGLESTON (Thomas) The METALLURGY of SILVER, GOLD, and MERCURY, in the UNITED 

 STATES, with 329 woodcuts (including many folding plates], 2 vols. 8vo. (pp. 1475), cl., 1. Is 

 (p. 3. 3s) 1887-90 



7470 EHRMANN (Friedrich Ludwig) EssAid'un ART de FUSION a 1'AiDE del' AIR du FEU ou AIR 

 VITAL, traduit par JEAN FRANCOIS DE FONTALLARD ; suivi des MEMOIRES de MR. LAVOISIER 

 sur le meme Sujet ; with 3 plates, 8vo. contemporary French calf gilt (large and sound copy), 14s 



Strasbourg, 1787 

 Lavoisier's contributions (pp. 113) comprise: 'De 1'action du feu anime par 1'air vital sur les substances minerales les 



plus refractaires ', ' Sur 1'effet que produit sur les pierres precieuses un degre de feu tres-violent ', and ' Sur un moyen 



d'augmenter considerablement 1'action du feu et de la chaleur dans les operations chimiques '. There is also an additional 



memoir by General MECTSNIER DE LA PLACE. 



' Ouvrage important et qui contient une suite d'experiences aussi nombreuse, qu'il sera tres utile de le publier, et qu'il 



merite d'etre imprime sous le privilege de 1' Academic '. Extrait des registres de I' Academic. 



7471 EICHSTADT (Lorenz, M.D.) EPHEMERIDUM NOVARUM et MOTUUM COELESTIUM 1651-65 

 PARS Ilia, quse Meridiano Uranopyrgico in Freto Cimbrico, Sedi Astronomies instauratse, et in 

 inferioribus Planetis nempe Venere ac Mercuric, Tabulis Rudolphinis JOHANNIS KEPLERI ; at in 

 LUMINARIUM MOTIBUS, EcLiPsiBus eorundem et superioribus CHRISTIANI S. LONGOMONTANI 

 Tabulis Danicis accommodata et liberiori paulo Calculo computata est ; cum C Aphorismis de 

 Judiciis Genethliacis ; with numerous woodcuts, 4to. old English calf gilt (back of binding slightly 

 damaged, otherwise a fine copy], 10s Qd Amsterodami, Lud. Elsevir, 1644 



26 



