Maybe the development of life, and its upward tendency toward higher and higher forms, is in some way the result of the ripening of the earth, its long steeping in the sea of sidereal influences. The earth is not alone, it is not like a single apple on a tree; there are many apples on the tree, and there are many trees in the orchard. THE END INDEX Adaptation, 184, 215, 216. Alpha rays, 60, 199. Aquosity, 127, 128, 141-143. Aristotle, 240. Asphalt lake, 123. Atoms, different groupings of, 56-60; weighed and counted, 60, 61; indivisibility, 61; the hydrogen atom, 65; chemical affinity, 193-195; photography of, 199, 200; form, 203; atomic energy, 204; qualities and properties of bodies in their keeping, 204; unchanging character, 205, 206; rarity of free atoms, 209; mystery of combination, 210. Autolysis, 169. Balfour, Arthur James, on Bergson's "Evolution Creatrice," 15. Bees, the spirit of the hive, 82. Benton, Joel, quoted, 70. Bergson, Henri, 129, 173, 263; on light and the eye, 5; his view of life, 14-16, 27-29, 221, 237, 238; on the need of philosophy, 85, 86; on life on other planets, 87; his method, 109, 110; the key to his "Creative Evolution," 132; on life as a psychic principle, 162; his book as literature, 238. Beta rays, 61, 199, 201. Biogenesis, 25. _See also_ Life. Biophores, 217. Body, the, elements of, 38, 39; the chemist in, 152, 153; intelligence of, 153, 154; a community of cells, 157, 158; viewed as a machine, 212-214, 224. Brain, evolution of, 288. Breathing, mechanics and chemistry of, 50-54, 213. Brooks, William Keith, quoted, 128, 236. Brown, Robert, 191; the Brunonian movement, 167, 172, 191. Brunonian movement, 167, 172, 191. Butler, Bishop, imaginary debate with Lucretius, 219, 220. Carbon, 38, 56, 59; importance, 208. Carbonic-acid gas, 52, 53. Carrel, Dr. Alexis, 98, 148. Catalysers, 135, 136. Cell, the, 83-85, 90, 96, 97, 180; Wilson on, 95; living after the death of the body, 98; Prof. Benjamin Moore on, 107; nature of, 113; aimless multiplication, 148, 233; the unit of life, 156; communistic activity, 157, 158, 184; a world in little, 170; mystery of, 175; different degrees of irritability, 216, 217. Changes in matter, 131, 133. Chemist, in the body, 152, 153. Chemistry, the silent world of, 49-54; wonders worked by varying arrangement of atoms, 56-60; leads up to life, 188; a new world for the imagination, 189-192; chemical affinity, 193-195; various combinations of elements, 205-208; organic compounds, 209; mystery of chemical combinations, 210; chemical changes, 210, 211; powerless to trace relationships between different forms of life, 231, 232; cannot account for differences in organisms, 233, 234. Chlorophyll, 77, 113, 168, 169, 177, 235. Colloids, 76, 108, 135, 136. Conn, H. W., on mechanism, 91-94. Consciousness, Huxley on, 95, 181, 262.