INDEX. 
Absolute truth, 336. 
Abstinence, good reason for, 276. 
Acceleration, 81, 
law of, 230, 231. 
of development, 26. 
Acquired characters, 131. 
inheritance of, 42, 97. 
transmission of, 82, 83. 
Adaptation, 26, 87, 200. 
by divergence, 69. 
not progress, 68, 
Adolescence, 272. 
Adolescent stage, 235. 
Adult stage, 235. 
Agassiz, latest and greatest opponent 
of theory of derivation, 43. 
Agassiz, on embryonic development, 
231. 
on facts, 29, 
on thoughts of God, 345. 
on unity of type, 8, 9. 
Aggregation of cells, 93. 
Alfred the Great, 141, 142. 
Algz, reproduction of, 164. 
Algebraic expression of heredity, 124. 
Allah’s will, 289. 
Allen, on definition of species, 216. 
on variation in Florida birds, 215. 
All life from life, ro. 
Altruism, go. 
in lower animals, 92. 
of parenthood, 315. 
value of, 28. 
Amaltheus, 249. 
Ammonidea, numbers of, 245. 
Ammonites, 234. 
Amphiaster, 154. 
Anaphases, 156, 157. 
Anarcestes, 236, 243, 253. 
Ancestors, 141, 142. 
Ancon sheep, 115. 
Ancylobranchia, 238. 
Angel fish, 225. 
Angelichthys ciliaris, 225. 
Anguilla, 43. 
Animal pauperism, 279. 
Anomalies in distribution, 200, 
Ant-eater of Australia, 4o. 
Antedon, 237. 
Anthropoid apes, 67. 
Aosta, cretins of, 284-286. 
Arcestide, 244. 
Archoplasm, 151. 
Arctic birch, 208. 
Arpadetes, 234. 
Artemia, 112. 
Arthaber on ammonites, 249. 
Articles of scientific faith, 346. 
Artificial selection, 19. 
Ascaris, 153. 
development of eggs of, 155, 159, 
160. 
Assimilation, 103, 104, 
Assisted immigration, 308. 
Aster, 154. 
Astral body, 352. 
379 
