INDEX 



a Rays, 169, 170, 173, 174, 188, 



191, 194, 200, 239 

 Aberration of light, 223 

 Actinium, 166 

 Action, 2, 40, 247 

 Active deposits, 177, 188 

 Adams, 262 

 ^ther, 154, 160, 220 et seq.^ 



232, 234, 245, 252 

 ^Ethereal strain, 234 

 Aitken, 132 

 Algol, 275, 276 

 Aluminium, 202 

 Andrews, 43 ; another Andrews, 



89 

 Antimony, 78, 91 

 Argon, 55, 56 

 Arrhenius, 3, 105, 124, 158 

 Aston, F. W., 156, 197 

 Astro-physics, 10, 158, 261 et 



seq. 

 Atom, the individual, 193 ; 

 structure of, 214, 237 ; 

 nucleus of, 216, 240, 247 

 Atomic disintegration, 185, 186, 

 191, 195, 199, 200, 201, 239 

 nucleus, 216, 240, 247 

 numbers, 196, 241 

 structure, 147 etseq.^ 211, 214, 



219, 237, 22,9 et seq. 

 theory, 3, 25, 102, 104, 108, 

 193, 204 et seq. 

 Aurora borealis, 158, 287 



807 



Rays, 169, 170, 174, 195, 221, 



255 

 Bacon, Lord, 13 



Balmer, 249 



Barium, connection with radium 



167 



Becquerel, 165, 182 



Beilby, Sir G. T., 90 



Bemmelen, Van, 117 



Bemont, 167 



Benzene ring, 142 



Bohr, N., 2, 249, 251, 280 



Bolometer, 269 



Bolt wood, 188 



Boron, 202 



Boscovich, 218 



Bragg, Sir Wm. and W. L., 139 



Broad, C. D., 8, 12 



Broadcasting, 226 



Bronzes, 82 



Buchanan, J. G., y2> 



Bunsen, 263, 264 



Burton, 120 



Cailletet, 45, 46 



Calcium light from sun, 2S0 



Campbell, 291 



Cathode rays, 136, 142 et seq., 



213 

 Cause and effect, 28 

 Cavendish, 56 

 Chemical combination, 78, 104, 



114, 206, 212, 217 



