INDEX. 



527 



Stuhrer's battery, 150 



Stokes, 322, 326 



Stopped tube or pipe, 443 



Stromuhr, Ludwig's, 231 



Sturm, Focal interval of, 392 



Suction pump, 278 



Sulphate" of quinine, Phosphor- 

 escence of, 336 



Sulphide of calcium, Phosphor- 

 escence of, 339 



of strontium, Phosphores- 

 cence of, 339 



Surface tension, 240 



Symmer, 3 



Sympathetic vibration, 439 



Syphon, 279 



barometer, 277 



System of refractive media, 377 



Tambour of Marey, 185 

 Tangent galvanometer, 96 

 Temperature, 465 

 , Measurement of by galvano- 

 meter, 146 



by thermometers, 468 



Tension, Arterial, 221, 224 



, Electric, 6, 25 



Tetanic contraction, 67 



Tetanometer, 73 



Thermal capacity, 476 



effects of electric current, 



50 

 unit, 454 



Thermo-electric currents, 142 



needle, 147 



pile, 144 



series, 143 



Thermometers, 466 



Thermometric scales, 468 



Thermometry, 464 



Thomson's, Sir Wm., galvano- 

 meter, 99 



Thyro-arytenoid muscles, 449 



Thyroid cartilage, 448 



Timbre of musical sounds, 435 



Torricellian experiment, 276 



Tourmalin, Polarisation by, 4 3 



Trade winds, 459 



Train of prisms, 325 



Translucent, 299 



Transparent, 299, 461 



Transmission of movement 184 



of pressure, 189 



Transudation, 266 



Triplet, 361 



Troughs for galvanometer, 114 



Tubes, Capillary, 215 



, Elastic, 216 



, Flow of liquids in, 211 



Tubed, Rigid and elastic com- 

 pared, 220 

 Tuning fork, 44 1 



for chronograph, 173 



Two-fluid theory of electricity- 2 

 Tj ndall, 335, 453, 463 



Ultra-red rays, 335 

 Ultra-violet rays, 336 

 Undulatory theory of light, 29S 

 Unipolar induction, 57 

 Unit of electromotive force, 17 



of resistance, 33 



, Thermal, 454 



Unpolarisable electrodes, 111 

 Unstable equilibrium, 501 

 Upward pressure, 192 

 Urari, 75 

 TJrinometer, 205 



Vaporisation, 470 

 Vapour, Latent heat of, 473 

 Variation of muscle-current, 118 

 Velocity of efflux, 208 



of light, 299 



Vena contracts, 209 

 Ventral segments, 437 

 Vibrating style of Marey, 173 

 Vibration, Amplitude of, 298 



, Frequence of, 298 



of a pendulum, 506 



-, Time of, 508 . 



of a string, 437 



, Period of, 297 



, I'hase of, 298 



, Sympathetic, 439 



Vierordt's haemotachometer, 2'>2 



sphygmograph, 233 



Virtual foci of lens, 315 

 of mirror, 305 



image r f lens, 318 

 of mirror, 307 



Visual angle, 382 



Voice, Production of, 448 



Volkmann's haemodromometer, 



230 



Volt, 17 

 Volta, 14 

 Voltaic couple, 16 



pile, 14 



Voltameter, 51 

 Vowel sounds, 450 



Wagner's hammer, 42 

 Walking, Dynamics of, 511 

 Warren de la Rue's element, C3 

 Water calorimeter, 479 

 Waves, character of, 217 

 , Compound, 435 



