INDEX 



693 



309, 355 ; 349 ; influence of ovary 

 in, 318, 328 sq., 332 aq., 341 ; 

 ovum of, 371 ; foetal nutrition 

 in, 387, 411, 413, 416, 427 ; 

 pregnancy in, 490, 498, 500 aqq., 

 607 sq., 511 sq., 520 ; parturition 

 in, 538; '552; lactation in, 563, 

 583 ; fertility of, 590 sq., 601 ; 

 sex in, 644 aq. ; 671 



Dolphin, breeding period of, 53 



Donaldson, 662 



Doncaster, 131, 204, 210 sq., 629, 

 639 aq. 



Donkey, ovulation in, 136 ; 183 



Doran, 330 aq., 346 



Drennan, 516 



Driesch, 190, 660 



Driessen, 442, 478 



Droop-Richmond, 564 



Droaophila ampelopMla, 208 



Dubner, 520 



Dubois, 281, 300 



Dubreuil and Regaud, 159, 344 



Dubuisson, 157 



Duck, 315 ; fertility of, 591 aq. 



Duckworth, 306 



Ductless glands, 336 ; correlation 

 between generative organs and, 

 349 sq. ; during pregnancy, 

 522 sq. 



Dudley, 331, 674 



Duesberg, 131 



Dugong, 376 



Diihrssen, 185 



Dumas, 184 



Duncan, Matthews, 66, 587, 589 sq., 

 608 



Dungern, 179, 216 



Durham, 640 ' 



DUsing, 630, 642 



Duval, 62, 361, 387, 400, 413 aq., 

 416, 420, 423 aq., 426, 437, 439, 

 462, 483, 552 



Dzierzon, 628 sq. 



E 



Earthworm, 186, 190 

 Ebner, von, 561 



Echidna, oestrous cycle in, 38 sq. ; 

 lactation in, 554 



Echinodermata, breeding season of, 

 15 sq. : spermatozoa of, 174, 178, 

 sqq., 190 ; cross-fertiUsation of, 

 203 aqq., 210 aq. ; partheno- 

 genesis in, 216-226 paaaim 



Echinoidea, 178 



Echinua, 179, 300 



Echinus acutua, 16 



Echinua esculentus, 16, 300 



Echinus microtuherculatus, 16 



Eckhard, 251, 254 sqq., 677 



Eden, 430, 478, 543 



Eel, 18, 23 



Eggelung, 554 



EhrUch, 520 



Ehrstrom, 291, 507 



Eimer, 62 



Ejaculation, mechanism of, 251 sqq. 



Eland, oestrous cycle in, 49 ; 306 



I lasmobianohs, 16, 190, 277 



Elephant, oestrous cycle in, 52 ; 242 , 



' 304 ; foetal nutrition in, 419 aq. ; 



lactation in, 553 ; fertility of, 



592 ; age attained by, 681 

 Eliomys quercinus, 40 

 Ellenberger, 45-6, 47, 50 

 Ellis, Havelock, 63, 65, 70, 71, 



655 

 Emh&riza passerina, 593 

 Embryotrophe, defined, 403 n. 

 Empidas, 13 



Emrys-Roberts, 47, 163, 435 

 Engelmann, 80, 83. See also Kun- 



drat and Engelmann 

 Engstrom, 521 

 Enriques, 192, 214 

 Equus prjewaXakii, 51 

 Ercolanl, 359, 367, 401, 459 

 Erection, mechanism of, 251 aqq. 

 Erlandsen, 267 

 Eschrieht, 358, 375 

 Essen-Moller, 342 

 Eunice fucata, 11 

 Eunice viridis, 1 1 

 Eutheria, 149 

 Ewart, 61, 108, 136, 159, 201 sq., 



210, 396, 545, 615 aq., 620 

 Exner, 234 



Falco albid/us, 593 



Farkas, 281, 302. See also Tangl 



and Farkas 

 Farmer, 191, 201 

 Farre, 359 

 Fehllng, 512, 620 

 Felhier, 530 

 Ferret, 57 ; breeding period of, 58 



sq. ; oestrous cycle of, 99 aqq. ; 



ovulation in, 136, 141, 154 ; 



ovum in, 371 ; 416 ; fertility of, 



591, 594 

 Ferronl, 481, 511 

 Fertilisation, chap, vi., 371 i and 



sex-determination, 628 aqq. 

 Fertility, chap, xiv., 586 

 Fichera, 349 

 Fick, 200, 260 

 Finch, breeding of, in captivity, 592 



