Arrhenius, on elevation of continents, 17.
Aryan Era of India, 136.
Asteroids, probable origin of, 175; discovery of, 175; dimensions
of, 176; orbits of, 176; Mars' moons derived from, 177.
B.
Babbage and Herschel, theory of mountain building, 123.
Babes (and Cornil), size of spores, 98.
Becker, G. F., age of Earth by sodium collection, 14; age of
minerals by lead ratio, 20.
Berthelot, law of maximum work, 62.
Bertrand, Marcel, section of Mont Blanc Massif, 154.
Beta rays, nature of, 246; accompanied by gamma rays, 247;
production of, by gamma rays, 247; as ionising agents, 249.