SUBJECT INDEX 



735 



Destruction period, in menstrual cycle of 

 man, 78 sqq. ; in menstrual cycle of 

 monkeys, 85 sqq. ; in uterine cycle of 

 Carnivora, 94 sq. ; in uterine cycle of 

 Ungulata, 104 



" Detrituszone " of man, 496 



Determinants, 198 sq. 



Determination of sex, 11. See also Sex 

 determination 



Deutobroque cells, in ougenesis, 116, 118 



Deutoplasm, 404 



Development, of Loligo, 191 ; of Nereis, 



227 ; of Arenicola, 227 

 Dextrin in milk, 514 



Diadema serosum, breeding season in, 



14 sq. 



Dictyate stage of ougenesis, 117, 155 

 Didelphys aurita, cestrous cycle in, 36 ; 



breeding season in, ib. 

 Didelphys virginiana, see Opossum 

 Didermic blastocyst, 412 

 Diet, influence of, on milk, 596 sqq. 

 Dimorphism of gametes, 672 

 Dinophilus, fertilisation in, 184 

 Dinophilus apatris, dimorphism of ova in, 



679 

 Dicestrous cycle, 34 ; number of, in sheep, 



ib. ; number of, in Rodents, ib. 

 Dicestrum, 34 



Diplotenic stage of oiigenesis, 117, 155 

 Diplo-trophoblast, 412, 476 sq. 

 Diplozoiin paradoxum, breeding season in, 



9 



Dipnoi, breeding season in, 16 

 Dipodillus simoni, O3strous cycle in, 37 



sq. ; prolonged gestation in, 578 

 Dipodillus campestris, cestrous cycle in, 37 

 Discoid placenta, 408 

 Discoglossus, breeding season in, 20 

 Discus proligerus, 121, 123; in dog, 110; 



in rabbit, 124 

 Dissogonie, 228 ; in Bolina hydatina, 



228 n. ; in Eucharis multicornis, 228 n. 

 Dog, period of gestation in, 30 ; heat 



during gestation in, 33 n. ; cestrous 

 cycle in, 48 sqq. ; period of gestation 

 in, 50 ; uterine cycle in, 92 sq. ; pseudo- 

 pregnancy in, 97, 102 ; uterine mucosa 

 in, 99, 102, 443 ; ovary of, 110 ; theca 

 interna of, ib. ; discus proligerus in, 

 ib. ; theca external of, ib. ; interstitial 

 cells in ovary of, 120 n. ; discharge of 

 ova into Fallopian tube in, 136; artificial 

 insemination in, 174 sq., 649 ; in-breeding 

 in, 218 sq. ; prostate gland in, 248 ; 

 composition of semen in, 297 ; effect 

 of ovarian extract upon, 350 ; ovari- 

 otomy in, 361, 391 ; factors determining 

 heat in, 364 ; ovariotomy during preg- 

 nancy in, 369 ; thymectomy in, 380 ; 

 effect of pituitary extract on, 383 ; 

 hypophysectomy in, ib ; prochorion of, 

 406 ; yolk-sac in, 421 ; allantois of, 

 421 ; period of gestation in, 442 ; 

 source of foetal fat in, 450 ; syncytium 



of, 444 sq. ; placenta of, ib. sqq. 5 

 angioplasmode of, 446 ; foetal nutrition 

 in, 456 ; simplasma in, 457 ; metabol- 

 ism during pregnancy in, 524 sq. ; nitro- 

 gen balance during pregnancy in, 526 

 sqq. ; nitrogen excretion in, 532 ; 

 glycogen storage in, 537 ; origin of 

 fcetal fat in, 543 ; calcium during 

 pregnancy in, 550 ; phosphorus meta- 

 bolism during pregnancy in, ib. ; 

 energy metabolism in pregnancy in, ib. ; 

 blood of, during pregnancy, 556 ; 

 mechanism of parturition in, 571 ; 

 pseudo-pregnancy in, 576 ; milk of, 

 595 ; composition of ash of pup, ib. ; 

 composition of ash of milk of, ib. ; 

 composition of ash of serum of, ib. ; 

 corpus luteum of pseudo-pregnancy in, 

 617 ; explanation of lactation by 

 virgin of, ib. ; fertility in, 626, 628 ; 

 foetal atrophy in, 656 ; puberty in, 

 714; longevity in, 722 



Dolphin, breeding season in, 48 ; period of 

 gestation in, ib. 



Domestication, effect of, on fowl, 24 ; 

 fertility under, 628 



Donkey, ovulation in, 131 ; artificial in- 

 semination in, 175 



" Dotterplattchen," 291 



" Double monsters," sex of, in man, 679 



Dove, see Pigeon and Ring-dove 



Dragonet, phenomena associated with 

 breeding in, 26 sq. 



Drosophila, sterility in, 641 ; sex-deter- 

 mination in, 674 



Drosophila ampelophila, in- breeding in, 

 217 ; sex-linked characteristics in, 675 

 sq. 



Drugs, effect of, on fertility, 638 sq. 



Duck, effect of castration in, 336 sq. ; 

 ovariotomy in, 343 sqq. ; fertility in, 

 630 



Ductless glands, correlation of, with 

 generative organs, 379 sqq. ; in preg- 

 nancy, 558 sq. 



Duct of Gartner, 71 



Dugong, placenta of, 409 



Dysmenorrhcea, definition of, 61 ; cause 

 of, 80 



Dyspepsia in menopause, 715 



Eagle, longevity in, 722 

 Earthworm, polyspermy in, 183 

 Echidna, cestrous cycle in, 35 ; gestation 

 period in, 36 ; mammary glands of, 587 

 Echinodermata, breeding season in, 14 

 sq. ; fertilisation in, 183 ; cross- 

 fertilisation in, 211 ; parthenogenesis 

 in, 230 sq. 



Echinoidea, movements of spermatozoa 

 in, 171 ; hybridisation in, 219 sq. 



