INDEX 



Civilization, retrogressive selection 



of, 168-171 

 Clarke, Dr. J. M., 11 

 Classes, hereditary, 170 



intellectual, birth rate of, 171-174 

 Classification, of human races, 40 

 Cleft palate, 57 

 Coccyx, 77 

 Cochlea, 48 



Code, new, of adjustment, 144 

 Codes, collision of, 144 



rational selection of, 146 

 Coelom, 44 

 Col Iyer, 36 

 Combinations, Mendelian, 154, 155, 



170 

 Competition, between societies, 143 



tragedies of, 145 

 Conduct, 134 



rational, 105 



Congenital imperfection, 167 

 Consciousness, and experience, 113 



and intelligence, 112-114 

 Control, voluntary, lack of in certain 



actions, 106 

 Conversion, sexual, 97 

 Conviction, ex parte, 148 

 Cortex, of brain, 120 



cerebral, 93 

 Counter-selection, 135 

 Cranial sutures, disappearance of, 67 

 Creation, Mosaic account of, 1 

 Creeping, sea-anemone, 88 

 Cretinism, 64 

 Cro-Magnon man, 31 



art, 32 



decline, 35 



implements, 32 



size. 32 



skull, 32 



skull and face, 33 



skull, compared with Neandertal 

 man, 25 



Cultural adjustment, 135, 136 



societal, 135 

 Custom, 136 



Darling Downs, Australia, 12 

 Darwin and modern science, 131 

 Darwin, C. R., 128, 131 



formulation of natural selection, 158 



on variation, 156 

 Darwinian factors, 130, 136 



theory, 131 



Dawson, Charles, 20, 22 

 Deaths, ratio to births, 174 

 Degeneracy in certain families, 168 

 Degeneration, senile, see Senescence 

 Dentition, 75 

 Dermis, 56 



Descent of man, Darwin's, 129 

 Destiny, mankind, 165 

 Development, social, form of, 164 



early prenatal period, 42-45 



later prenatal, 45-63 



postnatal, 63-70 

 Differentiation, and extinction, 161 



relation to regeneration, 65 

 Diprothomo, 10 



Discussion, Age of, Bagehot, 145 

 Drosophila, 155 

 Dubois, Dr. E. ( 13, 15 

 Diissel, Germany, 23 



Ear, development, 48 



vestigial muscles of, 73 

 Earthworm, nervous system, 85 

 East Anglia, England, 36 

 Ectoderm, 43 



derivatives from, 43 

 Education, eugenical, 179 

 Education, Henry Adams, 126 

 Education, importance of, 181 



in relation to mores, 142 

 Effect, cooperative, 165 

 Effectors, 85 



sea-anemone, 89 



