454 



INDEX TO VOLUME III. 



TAIT. 



Tait, heat and mechanical energy, 

 relation between, reference to. 

 185. 



Talk, time wasted in, 360. 



Teacher, importance of good, 281. 



Teaching arid acquiring knowledge, 

 difference between, 234 ; Archi- 

 medes, principle of, 319. 



Technical advance, work of time and 

 labour, 369. 



Technical education, 230. 273 ; ad- 

 vantages of, 280 ; commercial 

 element in, 274 ; in France and 

 continental nations. 210 ; neces- 

 sary in overseers. 233 ; promotion 

 of, necessary, 53 ; Royal Commis- 

 sion on, 387 ; Royal Society. 

 President of, reference to, 387. 



Technical science teachers, import- 

 ance of, 386. 



Technological writings of Karsten, 

 Tunner, Griiner, Karl. Akcrmann. 

 Wedding, reference to, 126. 



Tehuantepec ship railway, Captain 

 Eads's, 348 ; opinion favourable 

 of Barnaby, N.. and Fowler, J., on. 

 348. 



Telegraph cable, via .Ascension, St. 

 Helena, the Cape and Mauritius 

 to India, importance of, 31. ~>. 



Telegraph, civilizing -influence of, 

 75. 



Telegraph Conference. 176. 



Telegraph communication with India 

 dependent on Indo-European line. 

 315. 



Telegraph correspondence, nature 

 and growth of, 76. 



Telegraph department, public enter- 

 prise prejudiced by powers given 

 to, 176. 



Telegraph engineer, problems in 

 electrical and physical science in 

 practice of, 75, 76 ; not specialist, 

 65. 



Telegraph engineering, advances in, 

 167 ; (Duplex Telegraphy an- 



TELEPHONIC IMPULSES. 



nounced by Nystro'm, C. A. and 

 Gintl, Dr., 167 ; carried out prac- 

 ticallybySiemens,W.,andFrischen. 



167 ; reintroduced by Steam, 168 ; 

 Schwendler, L., application to, of 

 improved Wheatstone bridge ar- 

 rangement, 168) ; progress,rapid,of, 

 75 ; (iiuacLriiplex telegraphy, 167, 

 168, 327 ; developed by Edison, 



168 ; established by Prescott, 168; 

 extension, further, probable, 168 ; 

 introduced by Stark, Dr., and 

 Boscha, Dr.) ; subjects for pure 

 and applied science societies, 65. 



Telegraph to India, 49, 50. 



Telegraph, international, regulated 

 by diplomatic conferences, 75. 



Telegraph inventions stimulated by 

 open competition, 175. 



Telegraph inventors, reference to 

 Bain, Breguet, Cooke, Morse, 

 Ronalds, Schilling, Siemens, W., 

 Steinheil and Wheatstone. 74, 75. 



Telegraph, shallow sea, sheathing of, 

 7. 



Telegraph system, reconstruction of, 

 241. 



Telegraph wires, 241. 



Telegraphy, international character 

 of, 68 ; Preece, W. H., lecture on, 

 391. 



Telephone, Bell's, G., 169, 327 ; de- 

 velopment of, by Bell, G., Edi- 

 son, Hughes, 284 ; diaphragm of, 

 vibrations of, 327 ; difficulties in 

 connection with, 284 ; Edison's, 

 327 ; of Bell, G., reference to, 327; 

 of Hughes, reference to, 327 ; im- 

 provements in, direction in which 

 being effected, 170 ; (induction, 

 effects on, 327 ; neutralizing, 327) ; 

 of Reiss, defects of diaphragm 

 arrangement of, 169 ; simplicity 

 of, 267. 



Telephonic impulses, affected by 

 neighbouring electric currents, 

 170 ; 24,000 per second in Kont- 



