280 



INDEX 



Chemotropism, 154 



China, 247 



Chinese, 254 



Chordates, 21 



Chromosomes, 36 



Ciona intestinalis, 25 



Cirripedcs, 25, 34 



Cleft palate, 230 



Coccinea, 144 



Coefficient of cross-relationship, 86 



of heredity, 196, 199 



of inbreeding, 81/f. 



of relationship, 81, 84/f. 

 Coelenterates, 21 

 Collins, 137, 153 

 Coloration, protective, 146 

 Color-blindness, 47/f. 

 Complemental males, 25 

 Composites, 32 

 Conjugates, 27 

 Connate seeds of maize, 133 

 Consanguinity, 113, 139 

 Corn, varieties of, 215 

 Coulter, 26 

 Cow, 192 

 Cramer, 198 

 Crampe, 101/f. 

 Cromwell, 258 

 Crossing-over, diagram to illustrate, 



64 



Cucumber, 221 

 Cucumis, 144 

 Cymothoidcs, 24 

 Cytoplasm of egg, 200 



Dalton, 235 

 Danes, 260 

 Darwin, 13, 25, 32, 34, 101, 114/f., 



137/f., 143, 146/f., 154, 164/., 186, 



235 



Datura, 142, 144 

 Davenport, 230/\, 233 

 Delphino, 34 

 Detlefsen, 103, 192 

 Diabetes insipidus, 230 

 Dianthus, IWf., 142, 144, 155 



Diatomeos, 27 



Dichogamy, 33 



Difflugia, 203 

 coronata, 78 



Digitalis, 144, 155 



Dicecism, 22 



Disease, susceptibility and resis- 

 tance to, 134 



Dog, 210 ff. 



Dominance, 57, 72, 177/f. 



Dominant factors, complementary 

 action of, 171 



Double cross, 223 



Double fertilization, 203. 



Draba, 155 



Drosophila, 179, 188, 198, 208 

 melanogaster, 61, 111, 184 

 sterility in, 112 



Diising, 106 



Echinodermata, 22 

 Echinoderms, 21 

 Edwards, 235 

 Ellis, 233 

 Emerson, 183 

 Endogamy, 238 

 Endosperm fertilization, 153 

 England, 257/f., 260f. 

 Englishman, 250, 262 

 Epilepsy, 231, 241 

 Eschscholtzia, 117 

 Europe, 247, 25 If., 257, 261 



leaders of, 257 

 European culture, 256 

 Evolution, 13 



inbreeding and outbreeding in, 



195/f. 

 Exogamy, 13, 15, 201 



Factors, stability of, 76/f. 

 Faraday, 235 

 Feeble-mindedness, 231 

 Ferns, 29 



Fertilization, diagram to illustrate, 

 39 



double, 41 



in embryo sac of the lily, 41 



