ton, in relation to Sexual Selection, 61-65

Comte, A., 200-203, 252-255, 262, 265

Condorcet, 221, 250, 252, 258

Cope, 138

Correlation of organisms, Darwin's idea of the, 2

Cournot, 265

Cuvier, 9, 10, 266, 268

Cytology and heredity, 95, 96, 99, 100

_Danaida chrysippus_, 75

_Danaida genutia_, 75

_D. Plexippus_, 75

Dantec, Le, 274

Darwin, Charles, as an Anthropologist, 146-165
--on ants, 44
--and S. Butler, Foot Note 61, 94
--on Cirripedia, 212
--on the Descent of Man, 111-145
--evolutionist authors referred to in the _Origin_ by, 9

Darwin, Charles, and Haeckel, 137
--and History, 246-263
--and Huxley, 112
--on Lamarck, 28, 129
--on Language, 124
--and Malthus, 16, 24, 91
--on Patrick Matthew, 19
--on mental evolution, 166-196
--on Natural Selection, 21, 41, 54, 55, 122
--a "Naturalist for Naturalists," 87
--his personality, 187
--his influence on Philosophy, 197-222
--predecessors of, 1-22
--his views on religion, etc., 115, 116, 219-222
--his influence on religious thought, 223-245
--causes of his success, 10, 90

Darwin, Charles, on the _Vestiges of Creation_, 15
--and Wallace, 23, 183
--on evolution, 7-15, 88
--on Lamarckism, 11

Darwin, F., on Prichard's "Anticipations," 21

Darwinism, Sociology, Evolution and, 17-18

Degeneration, 49-51, 93

Deniker, 137

Descartes, 4

Descent, history of doctrine of, 1

_Descent of Man_, G. Schwalbe on _The_, 111-145
--rejection in Germany of _The_, 156

Diderot, 6, 198

Dimorphism, seasonal, 30

_Dismorphia orise_, 75

Dragomirov, 273

Driesch, Foot Note 67

Dryopithecus, 132

Dubois, E., on Pithecanthropus, 132, 137

Duehring, 214, 277

Duns Scotus, 200

Duret, C., 6

Durkheim, on division of labour, 278

Ecology, Foot Note 205

Eimer, 109

_Elymnias undularis_, 73, 75

Embryology, the Origin of Species and, 154, 155

Empedocles, 3, 27, 151

Engels, 277

Environment, action of, 12, 13, 15

Epicurus, a poet of Evolution, 4

Eristalis, 75

Espinas, 275

Evolution, and creation, 233
--conception of, 3-5, 9, 148, 151, 198
--discontinuous, 30
--experimental, 5, 7
--factors of, 11-15
--mental, 194
--Lloyd Morgan on mental factors in, 166-196
--Darwinism and Social, 18
--Saltatory, 29-32
--Herbert Spencer on, 204-207
--Philosophers and modern methods of studying, 4

Expression of the Emotions, 177-184

Ferri, 277