INDEX. 



875 



Bontgen radiation, on the re- 

 combination of ions produced by, 

 65 ; on the secondary' emission of 

 electrons under the influence of, 

 144 ; on the theory of the scatter- 

 ing- of, 234 ; on the photographic 

 effect of, 296 ; on the production 

 of fluorescent, 359, 657, 870 ; 

 experiments on polarized, 792; 

 on ionization in gases by, 832. 



Budge (Prof. W. A. T>'.) on the 

 electrification associated with 

 dust-clouds, 481. 



Butherford (Prof. E.) on the heating- 

 effect of radium and its emanation, 

 312 ; on the age of pleochroic 

 haloes, 644; on the analysis of 

 the gamma rays from radium B 

 and radium C, 722. 



Salt solutions, on the electric brush 

 discharge in, 461. 



Salts, on the ionization produced by 

 heated, 370. 



Scrivenor (J. B.) on the geological 

 history of the Malay Peninsnla, 

 752. 



Secondary rays, on the asymmetric 

 emission of, 144. 



Shaw (A. N.) on the charged surface 

 layers in contact potential pheno- 

 mena between metals, 241. 



Sheard (Dr. C.) on the ionization 

 produced by heated salts, 370. 



Ship, on a graphical construction 

 for steering course of a, 558. 



Shorter (Dr. S. A.) on the application 

 of the theory of chemical potential 

 to the thermodynamical theory of 

 theory of solutions, 31. 



Silberstein (Dr. L.) on quaternionic 

 relativity, 135. 



Silver, on the dispersion of, 661 . 



Smith (H.) on the electric brush 

 discharge in water and salt 

 solutions, 461. 



Solutions, on the action of gravity 

 on, 31 ; on rotational optical 

 activity of, 817. 



Southwell (E. V.) on the collapse 

 of tubes by external pressure, 

 687. 



Spark, on the current potential 

 curves of the oscillating, 660. 



Spectroscopic study of the electric 

 brush discharge in water and salt 

 solutions, on a, 461, 



Spectrum, on the relative visibility 

 of the different colours of the, 

 715 ; on the origin of the bands 

 in the, of active nitrogen, 826. 



Steering course of a ship, on a 

 graphical construction for, 558. 



Sublimates, on an instrument for 

 measuring, 301. 



Sublimation, on the temperature of, 



- 856 - 



Swann (Dr. W. F. G.) on the con- 

 duction of heat along a pipe 

 through which gas is flowing, 109 ; 

 on the pulse theory of X-rays, 

 y rays, and photoelectric rays, and 

 the asymmetric emission of (3 

 rays, 534. 



Thermal radiation from hot gases, 

 on, 256. 



Thermionic current, on carriers of 

 the negative, in a vacuum, 735. 



Thomas (H. H.) on the pre-Cam brian 

 and Cambrian rocks of Pembroke- 

 shire, 197. 



Thorium, on the solubility of the 

 active deposit of, 330 ; on the 

 chemical properties and relative 

 activities of the radio-products of, 

 333. . 



Todd (G. W.) on the mobility of the 

 positive ion at low pressures, 163. 



Tolman (Prof. E. C.) on non- 

 Newtonian mechanics, 150. 



Trechmann i O. T.) on a mass of 

 anhydrite at Hartlepool, 754. 



Tubes, on the collaj.se of, by external 

 pressure, 697. 



Uranium, on the diffusion of, 415. 



Y, on the -existence of, 710. 



Valency of the radio-elements, on 



the, 390. 

 Velocities, on the distribution of, in 



a molecular chaos, 106. 

 Vibrations, on the transverse, of a 



rod of varying cross-section, 85 ; 



on a dynamo for maintaining 



electrical, of high frequency, 757. 

 Viol (C. H.) on the chemical 



properties and relative activities 



of the radio-products of thorium, 



333. 

 Vulcanized fibre, on some properties 



of red, 210. 

 Ward (P. F.) on the transverse 



vibrations of a rod of varying 



cross-section, 85. 



