﻿584 



INDEX. 



of rarefied gases, on the relations 

 of, 301. 



Thermometry, on the relation be- 

 tween the coefficients of pressure 

 in, 371. 



Thompson (B.) on landscape marble, 

 243. 



Thomson (Prof. J. J.) on the ve- 

 locity of the cathode-rays, 358 ; 

 on the scattering- of light by me- 

 tallic particles, 455. 



Threlfall (Prof. R.) on an approx- 

 imate method of finding the forces 

 acting in magnetic circuits, 89 ; 

 on the scattering of light by me- 

 tallic particles, 446. 



Toadstones, on the Derbyshire, 574. 



Trowbridge (Prof. J.) on electrical 

 resonance and electrical interfe- 

 rence, 182 : on the change of 

 period of electrical waves on iron 

 wires, 441. 



Vapour-pressure of a liquid at con- 

 stant temperature, on the influence 

 of the relative volumes of liquid 

 and vapour, on the, 569, 



Vapours, on the velocity of sound in, 

 for pure notes of different pitch, 

 249. 



Vibrations of a loaded spiral spring, 

 on the, 386. 



Volcanic rocks of the Inner Hebri- 

 des, on some of the Tertiary, 242. 



Volume, pressure, and temperature 

 of rarefied gases, on the relations 

 of, 301. 



Vortex motions in air, on, 159. 



Wadsworth (F. L. 0.) on an im- 

 proved form of Littrow spectro- 

 scope, 137 ; on fixed-arm spectro- 

 scopes, 337 ; on a new method of 

 magnetizing and astaticizing gal- 

 vanometer-needles, 482 ; on a sen- 

 sitive form of Thomson galvano- 

 meter, 553. 



Water, on the specific inductive 

 capacity of, 567. 



Watts (W. W.) on the occurrence 

 of perlitic cracks in quartz, 245. 



Wave, on the highest, of permanent 

 type, 351. 



Wave-lengths of electricity on iron 

 wires, on, 425, 441. 



Waves, on the amplitude of aerial, 

 which are but just audible, 365 ; 

 on the propagation of electro- 

 magnetic, in ice, 578. 



Whetham (W. C. D.) on the velo- 

 cities of the ions and relative 

 ionization-power of solvents, 392. 



W 7 hi taker (W.) on some deep bor- 

 ings, 575. 



Wilberforce (L. R.) on the vibra- 

 tions of a loaded spiral spring, 386. 



Wires, on torsional oscillations of, 

 36. 



Woods (H.) on the igneous rocks of 

 the neighbourhood of Builth, 576. 



Young (Dr. S.) on the influence of 

 the relative volumes of liquid and 

 vapour on the vapour-pressure of a 

 liquid at constant temperature, 569. 



END OF THE THIRTY-EIGHTH VOLUME. 



Printed by Xaylob and Framcis, Eed Lion Court, Fleet Street. 



