340 



E VOL UTION OF TO-DA Y. 



Cope on consciousness, 266 

 Correlated variations, 221 

 Crosses, 37 ; eliminating charac- 

 teristics, 224 

 Crustacea, 73, 112 

 Cuvier, 12, 55 



Dakota formation, 116 



Darwinism, 208 



Datura tatula, 257 



Dicotyledons in cretaceous, 116 



Dipnoi, 84 



Direct and indirect development, 



135 



Dispersal, means of, 184 

 Distinction between man and 



brute, 329 

 Distribution, and climate, 166 ; of 



families, 181 ; of orders, 182 ; 



of species, 179 

 Diversity of Silurian life, 103 

 Dogs, 35, 38, 41, 302, 304, 312, 



319 

 Duke of Argyle, 300, 320 



Echinoderms of Silurian, 100 

 Edentates, 171, 188 

 Effort a modifying cause, 264 

 Elephants, breeding of, 42 

 Embryology, a repetition of past 

 history, 122 ; an assistance in 

 classification, 139 ; compared 

 with hypothetical history, 126 ; 

 history in general, 155 

 Emotions, 304 

 Eozoan Canadense, 94, 96 

 Evolution, not Darwinism, 9, 



208 ; and theology, 13 

 Extraordinary births, 255 

 Eye in vertebrates and mollusKS, 

 232 



Falsification of embryological his- 

 tory, 134 



Fertility of, hybrids,37 ; varieties, 



34 



First appearance of life, 94 

 Food-yolk, effects of, 129 

 Fresh-water animals, distribu- 

 tion, 183, 184 

 Frog of Guadaloupe, 132 

 Frogs on islands, 193 



Galapagos islands, 194 

 Galaxias attenuatus, 187 

 Gastrula, 156 

 Gemmules, 276, 278 

 General summary, 232 

 Glacial age, effect on distribu- 

 tion. 174 

 Greenland whale, 227 



H 



Haeckel's, history of man, 149 ; 

 theory of heredity, 275 



Heredity, 213, 269 



Homology and analogy, 70 ; ex- 

 planation, 71 ; between types, 

 62 ; in young stages, 62 



Horse, 31, 39, 49, 109, 167, 173, 

 231 ; history of, 109 



Human race, a possible case of 

 sterility, 35 



Huxley and comparative anat- 

 omy, 53 



Hybrids, 38 



Hypothetical stages, 148 



Hyracoidea, 66 



Imperfection of paleontology, 90 



Importance of embryology, I2O 



Impossibility of a complete evo- 

 lution theory, 6 



Incompleteness of Darwinism, 

 213 



Individual variation, 26 



Indirect evidence of immuta- 

 bility, 45 



Inherent tendency to vary, 29, 

 213 



