INDEX.

Baskerville and Kunz phosphorescence of substances under radium rays, 204
Beattie, Smolan and Kelvin discharging power of uranium rays, 7
Becquerel rays from calcium sulphide, 4 rays from uranium, 5 et seq. permanence of uranium rays, 6 discharging power of uranium rays, 6 magnetic deflection of radium rays by photographic method, 114 et seq. curvature of radium rays in a magnetic field, 115 et seq. complexity of radium rays, 116 et seq. electrostatic deflection of β rays of radium, 124 et seq. value of e/m for β rays of radium, 126 et seq. magnetic deviation of α rays of radium and polonium, 145 trajectory of rays of radium in magnetic field, 148 scintillations due to cleavage of crystals, 160 γ rays from radium, 179 secondary rays produced by active substances, 187 phosphorescence produced by radium rays, 201 conductivity of paraffin under radium radiation, 210 effect of temperature on uranium rays, 210 chemical action of radium rays, 214 removal of activity from uranium by precipitation with barium, 219 theory of radio-activity, 438
Bemont et M. et Mme Curie discovery of radium, 13
Berndt spectrum of polonium, 23
Blanc thorium in sediments from hot springs, 514
Blythswood, Lord and Allen, H. S. radium emanation in Bath springs, 513
Bödlander and Runge evolution of gases from radium, 215
Boltwood origin of radium, 460 amount of radium in minerals, 460 proportionality of uranium and radium in minerals, 461 production of lead by uranium, 484 radium emanation in spring water, 514 method of standardization of amount of emanation in waters, 514
Boys rate of dissipation of charge, 531

536