INDEX TO VOLUME 111. 



439 



HUGOINS, W. 



Huggins, W., astronomical research 

 with dynamo-electricity, 258; on 

 comets and meteorites, 301. 



J lushes, microphone of, 267 ; tele- 

 phone of, development of, 284. 



lluinboldt, on gaseous atmosphere, 

 reference to, 299. 



Hunt's, S., paper, re Newton's paper 

 on sun's conservation of its heat, 

 300. 



Huntsman first produced steel on 

 working scale, 138. 



Huxley, reference to, as British 

 Association lecturer, 85. 



Hydraulic engineering, models illus- 

 trative of, 112. 



Hydrogen, absence of, from earth's 

 atmosphere explained, 308. 



Hydrography, recent progress in, 

 by labours of Evans, Sir F., Car- 

 penter, W. B., Agassiz and Maury, 

 Capt, 345, 346. 



ICE production, per pound of coal, 

 63 ; heat gained in, 63. 



Illuminating and heating gas from 

 same retorts, 286, 339. 



Illumination improved, public de- 

 mand for, 37'J ; Siemens's, C. W., 

 street electrical, criticised by 

 Bucknill, Capt., 224. 



Improvement, science at bottom of, 

 363. 



Incandescence lamps, 268, 369. 



India-rubber, absorption of water 

 by, 12 ; boiling water, temperature 

 of, does not affect, 11 ; dissolved 

 by sea water, 12 ; insulating power 

 of, high, 10 ; insulation first used 

 for, 10. 



India, telegraph routes to, 315. ' 



Indicated horse-power, coal to pro- 

 duce, 81. 



Indo-European line, concession from 

 Germany, Russia, and Persia re- 



INVENTION. 



garding, 315 ; India telegraph 

 communication, dependent on, 

 :U."> ; neutrality guaranteed, : 

 predictions regarding, 315. 



Induced current, application of to 

 dynamo machines, 198 ; Faraday's 

 discovery of, 198. 



Induction coil, action, essential of, 

 396 ; coils, primary and secondary 

 of, 396 ; high potential, produced 

 by, 396, 397. 



Ingot iron, definition of, 148. 



Ingot steel, definition of, 148. 



Institute of France, 215. 



Institution of Civil Engineers, com- 

 mittee for experiments on steel, 

 &c., 61 ; lecture by Siemens, C. W., 

 to, on electrical transmission of 

 power, 391. 



Instrument for indicating depths 

 without sounding line, reference 

 to, 347. 



Insulating material, 12, 13, 23 ; rate 

 of transmission, effect of, on, 172. 



Insulation, continuity test for 

 Schwendler's, 42 ; increase of, 

 under pressure, 42 ; resistance of 

 cables, table of, 15 ; temperature, 

 effect on, 34. 



Intellectual and industrial progress, 

 relation between, 102. 



Intellectual progress in connection 

 with coal consumption, 102. 



International committee, definition 

 of steel by, reference to, 147. 



International electrical committee, 

 ohm, proposed determination of, 

 by, 324. 



International electrical congress, 

 321, 416. 



International geodetic conference, 

 reference to, 420 ; resolutions of, 

 420, 421. 



International metrical commission 

 at Sevres, 321. 



Invention and discovery, difference 

 between, 54. 



