INDEX. 



387 



Creation, evolutional idea of, 373. 



Creationism, 121. 



Creator, and originations, 374, 375. 



Cretaceous group, iS; period, esti- 

 mate of length, 55; tertiary divi- 

 sion line, 44. 



Criterion of age of rocks, 28. 



Croll, time estimate, 57. 



Crura and primary lamellae, 285. 



Cryptogenesis, 166. 



Curve of differentiation, 88. 



Cutting of the Columbia gorge, 56. 



Cuvier and Brongniart, 12, 20, 21; 

 and Lamarck, 154; terms of clas- 

 sification, 201. 



Cuvier's classification, 233. 



Cycles of repetition in a species, 95. 



Cyrtina, 285. 



Dana, J. D., Archaean, 14; and ceph- 

 alization, 226 ; geological time- 

 scale, 24; nomenclature of geol- 

 ogy, 25; and thickness ofdeposits, 

 57; time-ratios, 47, 48. 



Darwin and specific centres, 123 ; 

 and the origin of species, 155, 156. 



Darwin's "Origin of Species," 126, 

 128, 156. 



Darwin's theory, factors of, 193. 



Darwinism, 156, 158. 



Darwin (G. H.), time estimate, 56. 



Data of time estimates, 56. 



De la Beche, 18. 



Deluge, Noachian, 11. 



Depression and elevation, and order 

 of deposits, 73. 



Descent, 161 ; and recurrence of 

 characters, 211; with modification, 

 179; without modification, Forbes, 

 124, 125. 



Development, 168 ; and evolution, 

 70; and Lamarck, 152; main feat- 

 ures predetermined, 180; of indi- 

 vidual, 176, 219 ; of individual 

 characters, 185; of systems of clas- 

 sification, 27; purposeful, 97. 



Devonian age, 25, 30. 



Devonian system, 71. 



Diagram of evolution curves, 86. 



Diarthromeres, 224. 



Dicellocephalus fauna, 52. 



Difference in structure and environ- 

 rrent, 147; of form and environ- 

 ment, 139. 



Differentiation along digestive tract, 

 232; attained in Cambrian, 209; of 

 cell, 174; of cephalopods, 336; of 

 characters of brachiopods, 254 ; 

 of foot-organs in moUusks, 327 ; 

 of generic form, 87; illustrated, 

 228 ; mark of organism, 174 ; of 



Nautiloidea, 337 ; of nervous sys- 

 tem, 231; of a race into species, 

 318; and specialization, 175. 



Digestive tract, differentiation along, 

 232. 



Dimeric and monomeric types, 235. 



Direct evidence of evolution, 96. 



JDisjunda epoch, 67. 



Distribution and adaptation, 140 ; 

 centres of, 114; geographical, 70; 

 and structure, 147; and temperat- 

 ure, 145; varieties, 114. 



Distinctive features of Lankester's 

 classification, 251. 



Divergence, accounted for by evo- 

 lution, 260; of characters, in Dar- 

 win's theory, 195 ; of form and 

 lapse of time, 89. 



Division of eras into periods, 51. 



Division-planes, local, 29. 



Divisions of classification, early dis- 

 cerned, 234. 



Early plasticity succeeded by per- 

 manency, 297. 



Eaton, Amos, classification of, 19; 

 New York rocks, 19. 



Echinodermata, definition of, 204. 



Ectoderm, 172. 



Effect of Darwin's "Origin of Spe- 

 cies," 156; of environment, 98; 

 slight, t8i. 



Elements, chemical, and the cell, 

 166. 



Elevation of land and order of de- 

 posits, 74. 



Embryological likeness and mature 

 diversity, 241. 



Embryologist and Morphologisl,240. 



Embryology, 168. 



Embryonic, 94; development and 

 succession, 230. 



Embryos or fossils, 208. 



Embryo stage, no struggle for ex- 

 istence, 173. 



Emphasized, laws of evolution, 369. 



Endoderm, 173. 



English usage, 30. 



Environment, adaptation to, 114; 

 and ancestry, 98; conditions of, 

 113, 120; and the divergence of 

 characters, 140; and hard parts, 

 98; and organism, 6; and origin 

 of species, 127; slight effects of, 

 181; and structure, 147. 



Eocambrian, 52. 



Eocene, 21, 30. 



Ephebic, 94. 



Epochs in geology, 25, 69; of ex- 

 pansion in spirifers, 314; use of, in 

 time-scale, 53. 



