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



7347 DOUGLAS (George) Mathematical Tables ; containing the Logarithms of Numbers ; 

 Tables of Sines, Tangents, Secants, and Versed Sines ; a Table of Sexagesimal Parts, and Supple- 

 mentary Tables, with the Nature and Use of Logarithms, roy. 8vo. sewn, 3s 6d Edin , 1809 



7348 DOUGLASS (Sir James Nicholas, f.e.s., Engineer-in-Chief to the Trinity House ; builder of 

 the new Eddystone Lighthouse), Life of, by Thomas Williams, with portrait and plate, post 8vo. 

 buckram, 2s' 1900 



7349 DOURSTHER (Horace) Dictionnaire Universel des Poids et Mesures Anciens et 

 Modernes, contenant des Tables des Monnaies de tous les Pays, roy. 8vo. (pp. 604), seivn, 3s 



Bruxelles, ISiO 



7350 DOVE (Heiarich. Wilhelm ; f.r.s.) De Barometri Mutationibus : Dissertatio Inauguralis, 

 12mo. (pp. 50), sewn {scarce), 8s 6d Berolini, 1826 



The author's first published work. 



7351 Untersuchungen im Gebiete der Inductionselektricitat ; tvith folding plate and 



woodcuts, 4to. (pp. 96), sewn, 5s 6d ibidem, 1842 



7352 Ueber Wirkungen aus der Ferne, 8vo. (pp. 44), sewn, 2s ib., 1845 



7353 DOWLING (Charles Hutton, c.e.) Series of Metric Tables, in which the British Standard 

 Measures and Weights are compared with the Metric System, 2nd Ed., revised, 8vo. cL, 4* Qd 

 (p. 105 iSd) 1872 



7354 DOWNING (Samuel, t.c.d.) Elements of Practical Hydraulics, with 6 folding maps 

 (linen-mounted), 8vo. hf. morocco [title stamped), with author's inscr. to ^Major-Gen. R. J.] 

 Nelson, E.E.,2s Qd 1855 



7355 DOWSON (Joseph Emerson, m.i.c.e.), and Alfred Tabois LARTER, f.c.s. : Producer 

 Gas, with 73 illustrations, 8vo. cL, 7s (p. 10* Qd nett) 1906 



7356 DOYERE (Charles) Notions Element aires de Mecanique du Navire, l»e partie: Examen 

 Theorique ; loith 141 diagrams, 8vo. cl., with avto. of Dr. Francis Elgar, F.R.S., 3s 1895 



7357 DRAPER (Henry, m.d., sen of Dr. John WilUain Draper) On the Coincidence of the Bright 

 Lines of the Oxygen Spectrum with those in the Solar Spectrum, 8vo. (pp. 15), sewn, \s M 



New York, 1879 



7358 On Photographing the Spectra of the Stars and Planets, 8vo. (pp. 7), sewn, \s ^d 



ibidem, 1879 



7359 On Photographs of the Spectrum of the Nebula in Orion, 8vo. (pp. 3), sewn, 



\s ib., 1882 



7360 Researches on Astronomical Spectrum-Photography, with Intro, and Description 



of the Apparatus by C. A. Young, and Measurements and Discussions of the Plates by E. C. 

 Pickering, 8vo. (pp. 31), sewn, 2s ^d Cambridge \^Mass.], 1884 



7361 DRAPER (John William, m D.j History of the Conflict between Religion and Science, 

 3rd Ed., post Svo. cl., with auto, of Dr. Francis Elgar, F.E.S., 2s (5d (p. 5^) 1875 



7362 DREDGE (James; c.e., editor of 'Engineering') Modern French Artillery (the St. 

 diamond, de Ban<,^e, Canet, and Hotchkiss Systems), with Illustrations of French Warships, 

 with 88 plates, and numerous fine woodcuts, large folio, hf. morocco gilt (1 cover water- stained), \5s 

 (p. £2.) ■ 1892 



7363 DREW (John, f.r.a.s.) Manual of Astronomy: a Popular Treatise, with Familiar Explana- 

 tion of Astronomical Instruments, and the best Methods of using them, \Q plates, besides ivoodcuts, 

 fcap. 8vo. cl., 3s Qd 1845 



7364 Practical Meteorology, with \Q plates by Basire, fcap. Svo. cl., 5s 1855 



7365 DREW (William Henry, pr. ; St. John's Coll., Cantab.) Geometrical Treatise on Conic 

 Sections, with diagrams ; with Solutions, 2 vols, post Svo. cl., 3s Cambridge, 1857-62 



7366 DREYER (John Louis Emil, f.r.a.s., Armagh Observatory) History of the^ Planetary 

 Systems from Thales to Kepler, with diagrams, Svo. cL, with book/jlate of Dr. Emil Reich, Is 

 (p. 10s 6c? nett) IJniv. Press, Cambridge, 1906 



7367 The Instruments in the Old Observatory at Peking, 8vo. (pp.5), sewn. Is Dublin, 1881 



Were these among tlie national treasures t)f the Chinese destroyed in the international repri.sals for the Boxer outrages ? 



7368 Record of the Progress of Astronomy during 1879, Svo. (pp. 47), sewn, Is Qd ib., 1880 



Tycho Brahe (1890)— v. No. 6466, ante. 



7369 DRXJDE (Paul) The Theory of Optics, trans, by C Riborg Mann and Robert A. Millikan, 

 Chicago Univ., with over 100 woodcuts and diagrams, Svo. cl., \Qs Qd (p. 15.? nett) 1902 



' No one who desires to gain an insight into the most modern aspects of optical research can afford to be unfamiliar with 

 this remarkably original and consecutive presentation of the subject of optics.'— i'ro/. A. A. Michelson. 



7370 DXJBERN (Henry A.) De TApplication de I'AiR Atmosphi^rique aux Chemins de Fer : 

 Resume des Oi-inions des Ingenieurs Fran9ais et Anglais sur les Chemins de Fer Atmospheriques, 

 Svo. sevn, with author's inscr. [scarce), 8s Qd J 846 



a French defence of the Atmospheric Railway, including a making the best of the lugubrious experiences of the 

 Croydon Railway. 



7371 DUBOIS (Edmond) Les Passages de Venus sur le Disque Solaire : Passages de 1874, Notions 

 Historiques sur les Passages de 1761 et 1769; with diagrams, post Svo. sewn, with auto, of G. F. 

 Chambers, F.R.A.S., 2s Qd 1873 



DU BOIS— V. Bois, ante. 



DU BOIS-REYMOND— V. Bois-Reymond, ante. 



7372 DUBOST (Christopher) The Elements of Commerce, or Treatise on different Calculations, 

 Operations of Exchange, Speculations in Exchange, and Banking Operations, Exchange Circula- 

 tions, Operations of Specie and Bullion, etc., etc., with Description and Tables of Monies, Weights, 

 and Measures, and Tables of Logarithms, 2nd Ed., greatly improved, Svo. calf gilt, 5s 1818 



