﻿1176 



INDEX. 



Tizard (II. T.) on the ignition of 



gases by sudden compression, 



79. 

 Toinlinson (G. A.) on. the use of a 



triode valve in registering electrical 



contacts, 870. 

 Townsend (Prof. J. S.) on the 



velocity of electrons in gases, 



384 ; on the motion of electrons 



in argon and in hydrogen, 1033 ; 



on the ionizing potential of 



positive ions, 1147. 

 Toy (F. C. ) on the characteristic 



curve of a photographic emulsion, 



352. 

 Triode valve, on the use of a, in 



registering electrical contacts, 



870. 

 Trivelli (A. P. IT.) on Silberstein's 



quantum theory of photographic 



exposure, 252, 956. 

 Valves, on short electric waves 



obtained by, 161, 1064. 

 Van Vleck (J. H. ) on the normal 



helium atom, 842. 

 Vaporization, on the latent heat of, 



590. 

 Vibrational responders under com- 

 pound forcing, on, 573. 

 Vibrations and critical speeds of 



rotors, on the, 122 ; on damped, 



284, 951, 1063. 

 Vibrators, on the distribution of 



energy among a set of Planck, 



456. 

 Viscosity, on the, of carbon oxy- 



sulphide, 289 ; of sulphur dioxide, 



508 ; on the effect of the variable 

 head in determinations of, 953; 

 on a problem in, 1002. 



Walsh (J. W. T.) on the measure- 

 ment of light, 1165. 



Water, on the unsteady motion 

 produced in a cylinder of, by a 

 change in the angular velocity 

 of the boundary, 1. 



Waves, on the propagation of a fan- 

 shaped group of, 1149. 



Weights, on the protection of brass, 

 948. 



Wheatstone bridge, on the general 

 equations of an alternating - 

 current, 1024. 



Whiddington (Prof. R.) on short 

 electric waves obtained by valves, 

 1004. 



Wide-angle lens, on a, for cloud 

 recording, 999. 



Wood (Prof. R. W.) on atomic 

 hydrogen and the Balmer series 

 spectrum, 538 ; on the selective 

 reflexion of X 2536 by mercury 

 vapour, 1105 ; on the polarized 

 resonance radiation of mercury 

 vapour, 1107. 



Wright (C. E.) on damped vibra- 

 tions, 1063, 



Wrinch (Dr. D.) on the rotation of 

 slightly elastic bodies, 30. 



X-rays, on the spectra of, and the 

 theory of atomic structure, 546 ; 

 on the emission of electrons by, 

 793 ; • on a balance method of 

 measuring, 1159. 



END OF THE FORTY- FOURTH VOLUME. 



Printed by Taylor and Francis, "Red Lion Court, Fleet Street. 



