SUBJECT INDEX 



Hypertrophy, of ovary, 357 aq. ; of uterine 



mucosa, 370 



Hypoblast, 412, 414 ; of man, 493 

 Hypogastric nerves, 267 sqq. 

 Hypophysectomy in dog, 383 

 Hypoxanthine, 307 

 Hyrax, yolk-sac in, 421 ; placenta in, 



450 sq. 

 Hysterectomy, 376 sqq. ; in rabbit. 348 ; 



effect of, on ovary, 377 sqq. 

 Hysteria in menopause, 715 



I 



Ibex, 03strous cycle in. ' 



Ichthulin, 290 sqq. : source of, in ovary, 

 292 



Idioplasm, 690 



Ids, 199, 201 



Immortality of Protozoa, 721 



Implantation cavity, of mouse, 468 sqq. ; 

 of guinea-pig, 472 sqq. ; in rcan, 493, 

 497 



Impotence, causes of, 644 sq. 



Impregnation, 174 ; artificial, 176 ; in 

 frog, ib. ; in newt, 16. ; in fish, ib. 



Inach-us, sex-metabolism in, 691 



In- breeding, effects of, 215 sqq. ; in horses, 

 216 ; in fox-hounds, Hi. : in pigs, 

 ib. ; and fertility, ib. sqq. ; and 

 sterility, ib. sqy. : in mice, 217 ; in 

 rats, ib. ; in Droaophila ampelophila, 

 ib. ; in maize, ib. ; and homozygosity, 

 ib. sq. ; and abortion, 218 ; in sheep, 

 ib. ; in dogs, ib. sq. ; and virility 

 of spermatozoa, 219 ; and vitality of 

 ova, ib. sq. ; in rabbits, 224 ; in goats, 

 ib. ; effect of, on sterility, 639 ; effect 

 of, on fertility, ib. sq. 



Incubation period, 23 



Indeciduata, placenta of, 427 sqq. 



Indian ink, for vital staining. -HH> 



Infarct formation, ."iT"> 



Infusoria, conjugation in. 2n,"> 



Inguinal canal, 164 



Inguinal gland, 253 ; in musk deer, ib. ; 

 in irnisk rat, ib. ; in hamster, ib. 



Innervation, of female generative organs, 

 Chapter XII. ; of external female 

 generative organs, 560 sq. ; of clitoris, 

 560 ; of vulva, ib. ; of ovaries, 561 ; 

 of uterus, ib. sqq. ; of vagina, 16. 



Impotence, phosphorus as cure for. (138 ; 

 strychnine as cure for, 16. ; yohimbine 

 as cure for, Hi. 



Insecta, fertilisation in, 182 ; polysperray 

 in, 183 ; cholesterin in eggs of, 293 ; 

 phosphorised fats in eggs of, 293 ; 

 longevity in, 721 



Insectivora, cestrous cycle in, 55 sq. ; 

 uterine cycle in, 92 ; placenta of, 408, 

 410, 476 sqq., 509 ; yolk-sac in, 424 sq. 



Insemination by artificial means, 1 :{ 1 . 174 

 sqq. ; in dog, 174 sq., 649 ; method of, 



174 sq., 648 sqq. ; in horse, 175, 178, 648 

 sq. ; in donkey, 175 ; in cattle, 175, 

 649; in rabbit, 176; in guinea-pig, ib. ; 

 in mouse, 176, (>4!l ; in man, 176, 

 647 



Interaexuality, in fowl, 339 ; in Kuticilln 

 phvenicurus, 341 ; in pigeon, 686 ; in 

 Hermit crab, 691 ; in Ophryotrocka 

 puerilis, 692 ; in pigeon, 694 : in 

 Lymantriu crosses, ib. ; in fowl, 695 



Interstitial cells, 155 sq., 339; of ovary. 

 119, 142 n., 144 n., 145, 147, 346 sq., 

 386 n. ; origin of, in mole, 120 w. ; 

 origin of, in stoat, ib. ; origin of, in 

 oV_r, ib. ; of testes, 160 sq., 163, 335 sq. ; 

 of ovary, during gestation, 376 



Interstitial placenta! attachment. 442 



Intervillous spaces of placenta, 395 



Intra-uterine growth, 703 



Intromittent sac of penis, 258 



Invertebrata, chemistry of ova of, 292 sqq. 



Involution, of vagina, 582 ; of cervix uteri, 

 ib. ; of uterus, 581 



Ischio-cavernosus muscles, 254, 262, 266, 

 268 



Iron, in egg of fowl, 278 sq. ; source of, 

 in ova, 292 ; in spermatozoa, 311 ; as 

 catalyst, 315 ; source of foetal, 434, 

 547 sq. ; metabolism of, in placenta, 

 457 sq., 505 sq. ; granules of, in placenta, 

 459 ; in foetus of man, 547 ; in preg- 

 nancy, ib. sqq. ; in placenta, ib. ; in 

 foetal organs, 505 sq., 548 ; and abor- 

 tion, Hi. in milk, 594 ; in ash of pup, 

 595 ; in milk of dog, 16. ; in serum of 

 dog, ib. 



Irritants of penis, -258 



J 



Jaguar, fertility of hybrid with lion, 641 

 .Icily-fish, form of spermatozoa in, 169 

 Juniper, abortion caused by, 659 



K 



Kangaroo, oestrous cycle in, 36 



Karyogen, 311 



Keratin, composition of, 288 ; in eggs of 

 lower Vertebrates, 289 sqq. ; in eggs of 

 herring, 290 : in eggs of Bombyx, 292 



Kidney during senescence, 718 



Labia major, 74 



Labia minora, 74 



Labour, duration of. 



" Labour pains," 565 ; pressure of, 566 



Labyrinth of place nt. t. H7 



Lacertilia, yolk-sac of, 415 



Lactalbumen in milk, 594 



