INDEX 



309, 355 ; 349 ; influence of ovary 

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

 ovum of, 371 ; foetal nutrition 

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

 pregnancy in, 490, 498, 500 aqq., 

 507 sq., 511 aq., 520 ; parturition 

 in, 538 ; 552 ; lactation in, 563, 

 583 ; fertility of, 590 aq., 601 ; 

 sex in, 644 aq. ; 671 



Dolphin, breeding period of, 53 



Donaldson, 662 



Doncaster, 131, 204, 210 aq., 629, 

 639 aq. 



Donkey, ovulation in, 136 ; 183 



Doran, 330 aq., 346 



Drennan, 516 



Driesch, 190, 660 



Driessen, 442, 478 



Droop-Richmond, 564 



Drosophila ampelophila, 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 aq. ; during pregnancy, 

 522 sq. 



Dudley, 331, 674 



Duesberg, 131 



Dugong, 376 



Diihrssen, 185 



Dumas, 184 



Duncan, Matthews, 06, 587, 589 aq., 

 608 



Dungern, 179, 216 



Durham, 640 



Dusing, 630, 642 



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

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

 462, 483, 552 



Dzierzon, 628 aq. 



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-fertilisation of, 

 203 sqq., 210 sq. ; partheno- 

 genesis in, 216-226 passim 



Echinoidea, 178 



Echinus, 179, 300 



Echinus acutus, 16 



Echinus esculentus, 16, 300 



Echinus microtuberculotus, Ifi 



Eckhard, 251, 254 aqq., 577 



Eden, 430, 478, 543 



Eel, 18, 23 



Eggelung, 554 



Ehrlich, 520 



Ehrstrom, 291, 507 



Eimer, 62 



Ejaculation, mechanism of, 251 aqq. 



Eland, oestrous cycle in, 49 ; 306 



I lasmobianchs, 16, 190, 277 



Elephant, cestrous cycle in, 52 ; 242 , 



304 ; foetal nutrition in, 419 sq. ; 



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 



Emberiza passerina, 593 

 Embryotrophe, defined, 403 n. 

 Empidae, 13 



Emrys-Roberts, 47, 163, 435 

 Engelmann, 80, 83. See also Kun- 



drat and Engelmann 

 Engstrom, 521 

 Enriques, 192, 214 

 Equus prjewalskii, 51 

 Ercolani, 359, 367, 401, 459 

 Erection, mechanism of, 251 sqq. 

 Erlandsen, 267 

 Eschricht, 358, 375 

 Essen-Mbller, 342 

 Eunice fucata, 11 

 Eunice viridis, 1 1 

 Eutheria, 149 

 Ewart, 51, 108, 136, 159, 201 sq., 



210, 396, 545, 615 sq., 620 

 Exner, 234 



F 



Falco albidus, 593 



Farkas, 281, 302. See also Tangl 



and Farkas 

 Farmer, 191, 201 

 Farre, 359 

 Fehling, 512, 520 

 Fellner, 530 

 Ferret, 57 ; breeding period of, 58 



sq. ; oestrous cycle of, 99 sqq. ; 



ovulation in, 136, 141, 154 ; 



ovum in, 371 ; 416 ; fertility of, 



591, 594 



Ferroni, 481, 511 

 Fertilisation, chap, vi., 371 ; and 



sex-determination, 628 sqq. 

 Fertility, chap, xiv., 586 

 Fichera, 349 

 Pick, 200, 260 

 Finch, breeding of, in captivity, 592 



