344 



INDEX 



Department of Agriculture, 324 



Dependent, 321 



Desirable germplasm, 330 



Determination of sex, 264, 267 



DETTO, 70 



Development, arrested, 197 



rate of, 262 

 Deviation, standard, 26, 27 



average, 26, 27 



DEVRIES, 39, 41, 42, 43, 44, 45, 

 46, 52, 56, 96, 102, 124, 257 

 Diathetic, 317 

 Differentiation, cell, 219 



somatic, 255, 256, 258 

 Difilugia, 136, 141 

 Dihybrid, 107 

 Diluting gene, 156 

 Dimorphism in sex, 287 

 Dinosaurs, 56 

 Disease, 80 



Dissolution of hybrids, 46 

 Disuse, effects of, 78 

 Dogs, hairless, 50 



tailless, 49 

 Dominance, 119, 168 



delayed, 170 



incomplete, 174 



imperfect, 168 



reversed, 171 



Dominant, 97, 99, 196, 212 

 DONCASTER, 270, 284 

 Double flowers, 47 

 Doves, 272, 295 

 Drastic measures, 329 

 DRINKARD, 102 



Drosophila, 51, 52, 53, 101, 137, 

 143, 145, 165, 171, 179, 207, 

 233, 234, 235, 237, 239, 240, 

 242, 245, 246, 247, 248, 249, 

 269, 270, 278, 281, 285, 287, 

 291 



DROWNE, 11 

 Drugs, effect of, 82 

 DRYDEN, 201 

 Ducks, 289 



DUERDEN, 52 



DUGDALE, 299, 300 

 DUNK, 249, 260 

 Duplex, 106, 195 

 Duplicate genes, 190 



DURHAM, 156, 161 



Dwarf peas, 98, 99, 100, 105, 107 



Dyads, 266 



DZIERZON, 276 



EAST, 136, 186, 187, 214 

 Ears of rabbits, 177, 187 

 Echidna, 198 

 Echinoderms, 231 

 Echinus, 231 



EDWARDS, JONATHAN, 301 

 Effects of drugs, 82 



use and disuse, 78 

 Egg, 221 



abortive, 224 



ephippial, 275 



fertilized, 15, 55, 58, 80, 223 



frog's, 259 



human, 228 



laying, 145 



mature, 224 



parthenogenetic, 273, 275 



winter, 273, 274 

 EHRLICH, 82 

 EIMER, 21 



EI.DERTON, 306, 307 

 Elementary species, 41 

 Ellis Island, 322 

 Embryology, 251, 254 

 EMERSON, 48, 249 

 Emperor K'ang Hsi, 204 

 Endocrine factors, 261 

 Endocrinology, 262 

 Environment, 46, 60, 76, 296, 



304, 315 



Environmental factors, 261 

 Enzymatic pangenes, 257 

 Ephippial eggs, 275 

 Epigenesis, 252 

 Epileptic, 317, 321, 325 

 Erinaceus, 198 

 Erithyzon, 198 



ESTERBROOK, 300, 301 



Eugenics, 315, 317, 335 

 Eugenic conscience, 320 



Record Office, 315 

 Euthenics, 315 



Evening primrose, 42, 52, 53, 56 

 EWINO, 137 

 Experimental breeding, 254 



