/\1)KX TO VOLUME 111. 



449 



OUXTiriO HDL'OATION. 

 277) ; theory ami practice pit-sent 

 Interdependence of, 3 18 ; instances 



of, 31'.'. 



,iific education, continental 

 colleges and schools for, 27:$ ; im- 

 p n'tance of, 273. 



Scientific enquiry, increased neces- 

 sity for, 318. 



itific formulas and plain state- 

 ments, 85. 



Scientific fundamental knowledge, 

 acquisition for life, 385. 



Scientific journalism, development 

 of, 318. 



Scientific reading, interest of. 3(12. 



Secondary batteries, electric lighting 

 by, 334 ; of Faure, 334 ; perma- 

 nence of, necessity of improving. 

 376 ; of Plante, 334 ; of Sellou, 

 334 ; transformation of energy in 

 production of, 403 ; of Volckmar, 

 334. 



Secondary products, dyes produced 

 from, 365 ; utilization of, 30. "i ; 

 more valuable than coal supplied 

 to gasworks, 3 <>:>. 



Seeing properly and intelligently, 

 389, 390. 



ScLTuin. heat and mechanical energy 

 relation between, reference to, 185. 



Selenium in phonograph under sun's 

 rays produces loud sounds, 206, 

 207. 



Self-exciting principle of dynamo- 

 electric machines (roiminrnicu't-il 

 to Royal Society by Siemens, C. W., 

 3117 ; and Wheatstone, C., 397 ; by 

 Siemens, W., to Berlin Academy, 

 397) ; of what consisting, 397 ; 

 convertibility of, 398 ; machine, 

 original, illustrating, exhibited to 

 Royal Society, 398 ; mechanical 

 converted into electrical energy 

 by, 397 ; regenerative action set 

 up in, 397. 



Sellon, secondary batteries of, 334, 

 410. 



VOL. III. 



SII.MKNS. c. \V. 



N-vcrn tunnel, reference to, 3.~ii. 



Sevres, laboratory of metrical < in- 

 vention at. 321, 421. 



Shakespeare's poetic vision, reference 

 to, 284. 



Sheathing secures cable against 

 mechanical injury, 48 ; works, 

 test of cables at, 42. 



Shipbulding, material tough and 

 strong required for, 146 ; (steel, 

 lightness of, gives more carrying 

 power, 146; used by Admiralty, 

 344). 



Ships, building in iron, steel and 

 wood, 345 ; bulk-heads for, 344 ; 

 construction of, 343 ; (furfur 

 of safety of sailing, 344 ; of 

 steam, 344) ; insurance, premium 

 of, 344 ; material for, 343 ; water 

 ballast for, 345. 



Ships of war of extra mild steel, 

 built by Admiralties, British and 

 French, 146. 



Shores and shallow seas, heavy iron- 

 clad cables for, 23. 



Shunt dynamo machine, 400. 



Siemens, C. W., addresses of, 52 64. 

 6478, 7984, 112124, 124 

 153, 167181, 207215, 230 

 237, 266272, 273291, 316 

 368, 359365, 366383, 384 

 390, 413421 ; article by, 293 

 313 ; basic linings, experiments 

 on, in 1868, 226 ; Bessemer medal 

 awarded to, 107, 108 ; dynamo 

 electric principle brought before 

 Royal Society by, 162, 397 ; Elk- 

 ington, G., introduction and visit 

 to, 283 ; England, arrival in, 282, 

 and return to, 283 ; fuel, on, 85 

 104 ; heat applications engrossed 

 attention of since 1846, 189 ; lec- 

 tures of, 723, 2948, 85104, 

 182205, 243262, 391413 ; 

 letters of,49 50,50 52, 104107, 

 110112, 155156, 157159, 162 

 163, 163164, 164165, 165 

 O O 



