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



4806 THIBAUT, dit Le Lorrain (P., Distillateur ordinaire du Roy] COURS de CHYMIE, derniere 

 Edition, corrigee de plusieurs Fautes ; with engraved title showing various stills, etc., 18rao. 

 (pp. 444), old vellum (rare], 12s Qd Leyde, 1672 



Unknown to Brunei, Graesse, Poggendorff, etc., and containing much pharmaceutical matter; also alchemical, e. g. on 

 the Tincture of Gold, etc. 



4807 THOMALEN (Adolf) TEXT-BOOK of ELECTRICAL ENGINEERING, trans, by GEORGE W. O. 

 HOWE, South Kensington, with 454 diagrams, roy. 8vo. cl., 10s (p. 15s nett) 1907 



4808 THOMAN (Fedor) THEORIE des INTERETS COMPOSES et des ANNUITES, suivie des Tables 

 Logarithmiques, traduit par 1'ABBE BOUCHARD, avec Avertissement de JOSEPH BERTRAND, roy. 

 8vo. sewn, 6s (p. F. 10 nett) 1878 



4809 THOMAS (M., de Colmar], INSTRUCTION pour se servir de I'ARITHMOMETRE, Machine a 

 Calculer inventee par; with plate, 8vo. sewn, 3s 1865 



Still the best calculating machine, performing the four rules of arithmetic with surprising speed. It was in use in 1805 

 by the Western and Northern Railways of France, the Fonts et Chaussees, and Cambridge University Observatory. 



4810 THOMAS (Joseph William, F.I.C.) The VENTILATION, HEATING and LIGHTING of DWELL- 

 INGS, 72 woodcuts, post 8vo. cl., 3s (p. 6s) 1906 



4811 THOMPSON (A. Beeby) The OIL FIELDS of RUSSIA, and the RUSSIAN PETROLEUM INDUSTRY : 

 a Practical Handbook on the Exploration, Exploitation, and Management of Russian Oil 

 Properties, including Notes on the ORIGIN of PETROLEUM in RUSSIA, Description of the Theory 

 and Practice of Liquid Fuel, and Translation of the Russian Rules and Regulations, with 95 plates, 

 woodcuts, and maps, and 31 tables, thick 4to. buckram, 1. 15s (p. 3. 3s nett) 1904 



4812 THOMPSON (Edward C.) ROENTGEN RAYS and PHENOMENA of the ANODE and CATHODE : 

 Principles, Applications and Theories ; with Concluding Chapter by WILLIAM A. ANTHONY ; with 

 Opiates, and 60 diagrams, roy. 8vo. cl., 3s Qd (p. 7s Qd) New York [1896] 



4813 THOMPSON (Silvanus Phillips, F.R.S.) The DEVELOPMENT of the MERCURIAL AIR-PUMP, 

 reprinted, with Additions, from the Journal of the Society of Arts, 43 woodcuts, impl. 8vo. (pp. 37), 

 sewn, Is Qd 1888 



4814 DYNAMO-ELECTRIC MACHINERY, 2nd Ed., enlarged and revised, with 324 ivoodcuts, thick 



8vo. hf. morocco (title stamped), 3s Qd 1886 



4815 ANOTHER COPY, cl., 4s 



4816 THIRD EDITION, enlarged and revised, with 378 woodcuts, thick 8vo. cl., 5sQd (p. 16s) 1888 



4817 FIFTH EDITION, revised, with 19 plates, and 520 woodcuts, thick 8vo. cl. (some II. gnawed 



and slightly defective], Is Qd (p. 1 . 4s) 1896 



4818 The ELECTROMAGNET, and ELECTROMAGNETIC MECHANISM, with 213 woodcuts, 8vo. cl. 



(scarce], 10s 1891 



4819 ELEMENTARY LESSONS in ELECTRICITY and MAGNETISM, new [final] Ed., with 2 charts, 



and 291 ivoodcuts, 12mo. cl, 2s Qd (p. 4s Qd] 1895 



4820 POLYPHASE ELECTRIC CURRENTS, and ALTERNATE-CURRENT MOTORS, 2nd [latest] 



Edition, enlarged, with % folding plates, and 358 woodcuts, thick 8vo. cl. (SCARCE), 1. Is 1900 

 With Appendix containing a schedule of British patents on polyphase and alternating current motors, 1878-90. 



4821 THOMSON (Adam ; Watchmaker] TIME and TIMEKEEPERS, with numerous ivoodcuts, fcap. 8vo. 

 cl., with author's bookplate (scarce], Qs Qd 1842 



1 A concise and very complete history.' Gent. Mag. 



4822 THOMSON (David) The DESCRIPTION and USE of the LONGITUDE SCALE, or LUNAR 

 CORRECTOR, for readily clearing the Apparent Lunar Distances from Effects of Parallax and 

 Refraction ; and for finding the Apparent Time from the Altitude of the Sun, or a Star ; 2nd Ed., 

 greatly enlarged, roy. 8vo. hf. calf (scarce], 5s for the author, 1823 



4823 THOMSON (James, Belfast; LL.D. ; father of Lord Kelvin] ELEMENTS of PLANE and 

 SPHERICAL TRIGONOMETRY, with the First Principles of Analytic Geometry, 6th Ed., 2 plates, 

 8vo. cl, 2s Qd 1858 



4824 ANOTHER COPY, interleaved with writing paper, hf. calf, 3s 



4825 INTRODUCTION to the DIFFERENTIAL and INTEGRAL CALCULUS, with Appendix on the 



Theory of Curves, 2 plates, 8vo. boards, 2s Qd Belfast, 1831 



4826 THIRD EDITION [rewritten], with 3 plates, post 8vo. cl, 3s 1856 



4827 THOMSON (Sir Joseph John, F.R.S.) On some APPLICATIONS of DYNAMICAL PRINCIPLES to 

 PHYSICAL PHENOMENA, roy. 4to. sewn, 2s 1886 



4828 - APPLICATIONS of DYNAMICS to PHYSICS and CHEMISTRY, post 8vo. cl, 4s (p. 7s Qd) 1888 



4829 CONDUCTION of ELECTRICITY through GASES, with 183 illustrations, 8vo. cl, Is (p. 16s) 



Univ. Press, Cambridge, 1903 



Containing the important investigations for which the author was awarded the Nobel Prize for Physics in IDOti, and 

 'developing the view that the conduction of electricity through gases is due to the presence in the gas of small particles 

 called ions, which under the influence of electric forces move from one part of the gas to another." Preface. 



4830 The DISCHARGE of ELECTRICITY through GASES, with 41 diagrams, post 8vo. cl, 3s 



(p. 4s Qd nett) 1903 



4831 ELEMENTS of the MATHEMATICAL THEORY of ELECTRICITY and MAGNETISM, with 133 



diagrams, post 8vo. cl, 4s (p. 10s) Univ. Press, Cambridge, 1895 



4832 SECOND EDITION [corrected], with 133 diagrams, postSvo. cl, 4s6f/(p. 10s) a. e., ib., 1897 



4833 THOMSON (Thomas, Univ. Glasgow; M.D., F.R.S.) ATTEMPT to establish the FIRST PRINCIPLES 

 of CHEMISTRY by EXPERIMENT, 2 vols. 8vo. boards, uncut (rare), 10s Qd 1825 



' In 1819 Thomson began a series of experimental researches with the view of testing, or rather confirming, the theory of 

 William Prout, that the atomic weights of all elements are exact multiples of that of hydrogen. The results of the many 

 thousands of experiments which he conducted with this object were extremely favourable to the theory and were 

 published in 1326 under the title An Attempt, etc.' D. N. B, 



