INDEX. 



263 



PAGE 



Scandium, successful predic- 

 tion of 34 

 Science, definitions of, re- 

 defined 246 et seq. 

 Series, definition of, in periodic 



law 29 



Solar corona 237 



Solar prominences and their 



cause 236 



Spectra, fluted 196 



Spectra, variable 199 



Spectroscope, the philosophy 



of 194 



Spectrum, discontinuous 195 



Spectrum series 196 



Spinthariscope 106 



Stellar evidence of dissociation 204 

 Stellar thermometer, teachings 



of 211 



Sub-atomicity indicated in pe- 

 riodic law 41 

 Substances, radio-activity of 



ordinary 133 



Sun, helium in the 229 



Sun, the heat of the 227 



Sun, the life of the 228 



Table of atomic weights 17 



Table of transmuted elements 148 

 Thermodynamics, second law 



of 242 



Thermometer, stellar 209 



Thomson, Professor J. J., on 

 the structure of the atom 



154 et seq. 



Thorium emanation, condensa- 

 tion of 128 



PAGE 

 Thorium emanation obeys 



Boyles' law 145 



Thorium, radio-activity of 126 

 Thorium emanation X 128 



Thorium X, discovery of 126 



Triads of Dobereiner 21 



Triads of Dobereiner explained 



in terms of corpuscles 159 



Truth, definitions of 253 et seq. 



Uranium compounds, radio- 

 activity of 88 



Uranium, radio-activity of 129 



Uranium, transmutation into 

 Uranium X 142 



Uranium X distinguished from 

 uranium 144 



Uranium X, radio-activity 129 



Universe, a, the reconstruction 

 of 280 et seq. 



Universe, the, a conservative 

 system 223 



Universe, the, available energy 

 of 242 



Valency 37 



Valency, corpuscular explana- 

 tion of 166 



Water, radio-activity of 



133 



X-rays, possible nature of 111 

 X-rays, their relation to cor- 

 puscles 73 



Zero group 

 Zodiacal light 



38 

 287 



