468 



INDEX. 



Spheres, on the magnetic force acting 



on moving electrified, 1. 

 Squier (Lieut. G. 0.) on the currents 



in the branches of a Wheatstone's 



bridge, 161. 



rays on a jet of, 75. 



Steb'bing (W. P. D.) on two boulders 

 of granite from the middle chalk 

 of Betchworth, 895. 



Stoney (Dr. G. J.) on a new theorem 

 in wave-propagation, 139, 273, 368. 



Strahan (A.) on the geology of the 

 Varanger Fiord, 313, 314. 



Strond (Prof. W.) on a method of 

 measuring electrolytic conduc- 

 tivity by means of continuous 



• currents, 19. 



Substitution groups, on the transitive, 

 of order Sp, p being any prime 

 number, 117. 



Sutherland ( W.) on Boyle's law at 

 very low pressures, 11 ; on two 

 new pressure-gauges for the high- 

 est vacua, 83 ; on the sponta- 

 neous change of oxygen into 

 ozone and a remarkable type of 

 dissociation, 201. 



Tangent lens-gauge, description of 

 the, 256. 



Tarr (Prof. R. S.) on changes of level 

 in the Bermuda Islands, 313. 



Telescopes, on the resolving power 

 of, for lines of finite width, 317. 



Temperature, on the variation of the 

 dissociation-coefficient with, 286, 

 464. 



Thermal transpiration, on, 142. 



Thermo-electric properties of some 

 liquid metals, on the, 897. 



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

 tion of Bontgen radiation by gases 

 and vapours, 255. 



Tin, on the thermo-electric properties 

 of, 397. 



Trowbridge (Prof. J.) on the spectra 

 of argon, 77 ; on the multiple 

 spectra of gases, 185; on the 

 temperature and ohmic resistance 

 of gases during the oscillatory 



electric discharge, 349; on the 



effect of great current- strength on 



the conductivity of electrolytes, 



376 ; on the electrical conductivity 



of the aether, 378. 

 Tubes, on the passage of electric 



waves through, 125. 

 Ultra-violet light, on conductance 



produced in gases by, 418. 

 Uranium, on conductance produced 



in gases by, 418. 

 Vaporization, on the heats of, of 



liquids, 27, 291, 464. 

 Vapours, on the absorption of Ront- 



gen radiation by, 241. 

 Vincent (J. H.) on the photography 



of ripples, 411. 

 Voltaic action, on the influence of 



proximity of substances on, 440. 

 Wadsworth (Prof. F. L. 0.) on the 



resolving power of telescopes and 



spectroscopes for lines of finite 



width, 317. 

 Walker (Dr. T. L.) on the geology 



of the Sudbury nickel district, 



73. 

 Wave-propagation, discussion of a 



new theorem in, 139, 273, 281, 



368, 458. 

 Waves, on the passage of, through 



apertures in plane screens, 259. 

 , electric, on the absorption of, 



along wires by a terminal bridge, 



39 ; on a complete apparatus for 



the study of the properties of, 55 ; 



on the passage of, through tubes, 



125 ; on the effect of capacity on 



stationary, in wires, 383. 

 Wheatstone's bridge, on the currents 



in the branches of a, 161. 

 Wien (W.) on the division of energy 



in the emission-spectrum of a black 



body, 214. 

 Wires, on the absorption of electric 



waves along, 39 ; on the effect of 



capacity on stationary electrical 



waves in, 383. 

 Zeeman (Dr. P.) on the influence of 



magnetism on the nature of the 



light emitted by a substance, 226. 



END OF THE FORTY-THIRD VOLUME. 



Printed bv Taylor and Francis, Red Lion Court, Fleet Street. 



