766 HENRY SOTHERAN & CO., 140, STRAND, W.C., and 43. PICCADILLY, W. 



15235 THIESS (J. Bernhard), and G-uy A. JOY: Toll Telephone Practice, wifh Introductory 

 Chapter by Fkank F. Fowle, with 273 illustrations [many full-page), roy. 8vo. cL, 9s (p. 14* 

 nett) 1912 



15236 THOMAS (Carl Clapp, Cornell Univ.) Steam Turbines; with A: folding plates, linen chart, 

 and over 100 other illustrations, 8vo. cL, 6$ (p. 15* nett) New York, 1906 



15237 THOMAS (David Alfred, m.p. ) The Growth and Direction of our Foreign Trade in Coal 

 during the Last Half Century, ivith table and map, 8vo. roan, 3^ privately printed, 1903 



Mr. D. A. Thomas's was one of the few lives saved from the massacre of the Lusitania. 



15238 THOMAS (John William, f.c.s.) Treatise on Coal, Mine-Gases, and Ventilation, with 

 Copies of Researches 'on the Gases enclosed in Coal,' etc., cr. 8vo. cl. (o. p.), 4tS (p. 105 6a?) 1878 



15239 THOMPSON (Edward P.) Roentgen Rays, and Phenomena of the Anode and Cathode ; 

 Principles, Applications, and Theories, with Concluding ('hapter (Theoretical Considerations, 

 Arguments, and kindred Relations) by William A. Anthony, with 105 illustrations (many full- 

 page), large 8vo. cl., 3v 6d (p. 76- 6d nett) New York '[1896] 



15240 THOMPSON (Silvanus Phillips, f.r.s.) Dynamo-Electric Machinery, with 230 ivood- 

 cuts, thick 8vo. cL, 3s 1884 



15241 Another Copy, with auto, of F. J. Jerois- Smith, pr., F.R.S. , and inscr. and interesting 



auto, letter from the author to him, and photograph of theJirU self -exciting Dynamo, invented hy 

 S. A. Varley, with inscr. by the latter, 5s 



15242 Second Edition, enlarged and revised, with 324 woodcuts, thick 8vo. cl., 3s 6d 



(p. 12s 6d) 1886 



15243 Third Edition, enlarged and revised, with 378 illustrations, thick 8vo. cl., 4s 6d 



(p. 16s) 1888 



15244 Fifth Edition, revised, rvith 19 plates, and 520 woodcuts, thick 8vo.c^. {cover damaged). 



Is (p. £1. 4s) 1896 



15245 Seventh [latest] Edition [greatly enlarged and rewritten], ivith 54 folding plates, 



and 1119 other illustrotions. 2 very thick vols. 8vo. cl., £2. (p. £3. nett; 1904-5 



This edition incorporates the author's ' Design of Dynamos ', previously published as a separate work. 



15246 Elementary Lessons in Electricity and Magnetism, new [final] Edition [rewritten], 



with 2 charts, and 291 woodcvts, 12mo. cl., 2s (p. 4s 6rf) 1895 



15247 Light Visible and Invisible: Le3tures at the Royal Institution, Christmas, 1896, 



with 158 illustrations {including portraits and sciagraphs), large post 8vo. cl. , 3s Qd (p. 6s nett) 1897 



One of the most delightful books ev'er'written on this interesting subject, and remarkable for the lucidity and simplicity 

 of its exposition of apparently intricate problems. 



15248 The Physical Foundation of Music: an Exposition of the Acoustical Researches of 



Dr. Rudolph Koenig, of Paris, ivith 13 illustrations, 8vo. (pp. 31), sewn, 2s 1890 



15219 Polyphase Electric Currents, and Alternate-Current Motors, with 2 folding 



plates, and Ml woodcuts, 8vo. cl., 6s 1895 



This edition contains a Bibliography (pp. 17). which was left out in the second edition. 



15250 Second [latest] Edition, enlarged, ivith ^ folding plates and 358 woodcuts, large 8vo. 



cl. {scarce), with auto, of F. J. Jervis-Smith, pr., F.R.S., 15s 1900 



With Appendix containing a schedule of British patents on polyphase and alternating current motors, 1878-99. 



15251 THOMSON (David) Lunar and Horary Tables, for new and concise Methods of perform- 

 ing the Calculations necessary for ascertaining the Longitude by Lunar Observations or 

 Chronometers, with Directions* for acquiring a Knowledge of the principal Fixed Stars, and 

 finding the Latitude by them, 60th Edition, roy. 8vo. cl., 4s (p. lOs) 1867 



15252 THOMSON (David Purdie, m.d.) Introduction to Meteorology, ivith woodcuts, 8vo: cl. 

 {scarce), 8s Edin., 1849 



' A work replete with exact, learned, and curious information of every sort in the different departments of the science.' 

 — Alex. Buchan, f.R.S. 



' A work in which the reader will find assembled a most extraordinary collection of the recorded marvels of meteorology.' 

 —Sir John Herschel. 



15253 THOMSON (Capt. J. H.), and Sir Boverton REDWOOD: Handbook on Petroleum, 

 with Suggestions on the Construction and Use of Mineral Oil Lamps, with 2 plates, and 14 wood- 

 cuts, sq. 8vo. cl., 4s 6d (p. 8s 6d nett) 1901 



15254 THOMSON (Sir Joseph John, f.r.s. ; Cavendish Prof. Experimental Physics, Cantab., Nobel 

 Laureate) Applications of Dynamics to Physics and Chemistry, cr. 8vo. cL, 3s 6d (p. 7s 6c?) 1888 



15255 Conduction of Electricity through Gases, 2nd [latest] Edition [enlarged and re- 

 written], with 205 illustrations, 8vo. cl., 9s (p. i6s) Univ. Press, Cambridge, 1906 



Containing the important investigations for which the author was awarded the Nobel Prize for Physics in 1906, 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 e'ectric forces move from one part of the gas to another.'— i^re/ace. 



15256 The Discharge of Electricity through Gases, with 41 diagrams, post 8vo. cl. {cover 



stained), 2s 6d (p. 4s 6d nett) * 1898 



15257 Electricity and Matter, with 18 illustrations, large post 8vo. cl., 3s (p. 5s nett) 1904 



Including : Atomic Structure of Electricity : Constitution of the Atom : Radio-Activity and Radio-active Substances. 



15258 Notes on Recent Researches in Electricity and Magnetism, intended as a Sequel 



to Prof. Clerk-Max\vell's Treatise on Electricity and Ma^^netism, with \ 44 illustrations, 8vo. 

 cl. (very scarce), £2. 10s Clarendon Press, Oxford, 1893 



Containing I. Electric Displacement and Faraday Tubes of Force (pp. 1-52). II. Passage of Electricity through Gases 

 (pp. 53-207) III. Conjugate Functions (pp. 208-50). IV. Electric Waves and Oscillations (pp. 251-387). V. Electro- 

 magnetic Waves [including Hertz's Experiments] (pp. 388-50S). VI. Distribution of Rapidly Alternating Currents (pp. 

 510-33). Vir. Electromotive Intensity in Moving Bodies (i)p. 534-58). VIII. Electrolysis of Steam (pp. 559-70). 



15259 Rays of Positive Electricity, and their Application to Chemical Analyses, with 50 



illustrations {including 5 plates), 8vo. cl., 3s 6d (p. 5s nett) 1913 



