260 



INDEX. 



PAGE 



Corpuscles, speed of 59 



Corpuscles, resum6 of proper- 

 ties of 74 



Corpuscle, relation of its charge 

 to its mass 61 



Corpuscles, velocity of, how 

 determined 56 et seq. 



Corpuscular arrangement in 

 the atom 154 et seq. 



Curie, M. et Mde. 90 



Curves, illustrating decay and 

 restoration of activity 120 



Curves illustrating the decay 

 and recovery of thorium 

 radio-activity 127 



Dark stars, relation of, to 

 meteorites 223 



Davy on elemental transmuta- 

 tion 140 



De-emanated radium, a resto- 

 ration of activity 119 



Disintegration, atomic 150 et seq. 



Earth, the age of the 229 

 Earth, the, a self-heating body 230 

 Eka-aluminum 34 

 Eka-boron, identity with scan- 

 dium of 35 

 Eka-silicon 34 

 Electrical conduction explained 



by corpuscles 186 

 Electrical self-induction 180 

 Electron identical with corpus- 

 cle 185 

 Electrotonic theory of matter 185 

 Electrotonic theory, teachings 



of 187 

 Electrotonic theory distin- 

 guished from atomic disin- 

 tegration 189 

 Electroscope, simple 47 



PAGE 

 Electroscope for the study of 



radio-activity 117 



Electroscope, sensitiveness of 117 

 Element, definition of 8 et seq. 

 Elements, relation of tempera- 

 ture to, in stars 208 

 Elements, undiscovered, suc- 

 cessful prediction of 34 et seq. 

 Elements, radio-active, dis- 

 covery of 90 et seq. 

 Elemental transmutation is 



atomic 152 



Emanations, discovery of 114 



Emanation from radium, prop- 

 erties of 116 

 Emanation, decay of activity 



of 119 



Emanation, amount stored in 



solid radium compound 121 



Emanation, heat emitted by 174 

 Emanation from thorium 128 



Emanation, rays emitted by 119 

 Emanation, energy of 118 



Emanation X, properties of 



122 et seq. 



Emanation X, energy of 123 



Energy, definition of 5 



Energy, forms of 6 



Energy as an entity 7 



Energy, law of the conserva- 

 tion of 6 

 Energy, inter-elemental, its 



importance 257 



Energy, interatomic, amount of 176 

 Energy, interatomic, possibility 



of utilizing 177 



Ether, preliminary definition of 4 

 Ether, the, according to Men- 



deleeff 250 



Ether, the, its position in the 



periodic table 250 



Evolution, inorganic 206 et seq. 



