390 
Species, varieties of a larger growth, 
Ii. 
Spencer on acquired characters, 98, 
130, 131. 
on philosophy of evolution, 46, 
66. 
on physiological units, 104, 178. 
on survival of the fittest, 18, 84. 
Spent passions transmitted, 136. 
Spermatocyte, 171. 
Spermatozoids, 168. 
Sperm cell, 171. 
Sphezrechinus granularis, 186, 
Spindle, 151. 
of cell nucleus, 154. 
Spiritual pauperism, 298. 
Spontaneous generation, 5, 71, 346, 
348. 
Stability of truth, 334. 
Stages in development, 235. 
Starbuck on adolescence, 272. 
Star, origin of the word, 217. 
Starvation, effect on development, 
112. 
Station life in Australia, 205. 
“Stature from father,” 27, 118. 
Stead, 290. 
Steinmann on ammonites, 246. 
Struggle for existence, 19, 85, 86. 
for existence threefold, 29, 85. 
for realities, 366. 
Styrites, 247. 
Subspecies, 211. 
Suggestion, 371. . 
Superstition, growth of, 358. 
Survival of the existing, 31, 97, 146, 
218, 
Survival of the fittest, 18, 83, 84, 146, 
301. 
Systema nature, 1. 
Tachygenesis, 232. 
Tapir in North America, 209. 
Taylor, translation from Goethe, 118. 
Telophases, 156, 157. 
Tentaculites, 240. 
FOOT-NOTES TO EVOLUTION. 
Ternoceras, 253. 
Test of truth, 342. 
Tetrads, 180, 181. 
Thalassoceras, 244. 
Theologians, 50. 
Theology and science, meeting point, 
50. 
Thistles in Australia, 204. 
Thomson on larva of echinoderms, 
aay. 
Thoreau on degeneration of villagers, 
297. 
on insensibility of Nature, 61. 
on market for blood, 328. 
on passing of institutions, 298. 
Thoroughbreds, 126-128, 
Three-eyed vertebrates, 34. 
Thyroid gland, disease of the, 284. 
Tirolites, 234. 
Trachyceras, 234, 247. 
Tradition, 367. Rs 
Transmission of vitality, 135. 
Tribe of Ishmael, 304. 
Trifolium pratense, 21. 
repens, 21. 
Trilobites, evolution of, 239. 
Triviality of woman, 319. 
Tropiceltites, 247. 
Tropics, degeneration in the, 288. 
Tropical life, 198, 227. 
Tropitidz, 244. 
Trout in Yellowstone Park, 205. 
Trust in realities, 360. 
Truth not absolute, 336, 
stability of, 334. 
test of, 342. 
the perfect, 365. 
Tunicates, 278. 
Turnspit dogs, 115. 
Turrilites, 245. 
Two worlds at once, 359. 
Tyndall, experiments of, 71. 
Tyranny, evolution of, 331. 
Ultimate truth unknown, 341. 
Unger on cells, 152. 
