740 



SUBJECT INDEX 



Hare, size of litter in, 625 

 Harp seal, oestrous cycle in, 54 

 Hawk, sterility in, 629 ; in captivity, 630 

 Heart, during pregnancy in rat, 557 ; 



during senescence, 718 

 Heat period, 33, 562 ; during gestation, 

 33 n. ; relation of, to menstruation, 

 107.; factors determining, 358 sqq. ; 

 absence of, after, ovariotomy, 361 ; 

 after ovarian transplantation, 361 ; 

 ovarian extract causing, 362 ; factors 

 determining, in dog, 364 

 Heat-spots of penis, 254 

 Hedgehog, breeding season in, 55 ; period 

 of gestation in, ib. ; vesiculse seminales 

 in, ib. n. ; interstitial cells of testes in, 

 163 ; vesicula seminalis of, 244 sq. ; 

 corpus luteum in, 365 ; placenta of, 

 409, ■ 476 sqq. ; yolk-sac in, 424 ; 

 zona peUuoida of, 476 ; blastocyst of, 

 ib. ; trophoblast of, ib. sqq. ; diplo- 

 trophoblast of, ib. ; trophospongia of, 

 47.8 sq. ; trophosphere of, 478 ; ovum 

 of, ib. ; deciduofracts of, 479, 481 ; 

 ompbaloidean region in, 480 ; allan- 

 toidean trophoblast of, ib. ; allan- 

 toideau trophospongia of, 481 

 Helicine arteries of penis, 255 

 Hemiptera, longevity in, 721 

 Hemitragus jerulaicus, oestrous cycle in, 



43 sq. 

 Heredity, and fertilisation, 197 sq. ; and 



chromosomes, 199, 204 sqq. 

 Hermaphroditism, 688 sqq. ; artificial, in 

 caterpillars, 325 ; complete, 688 ; in 

 sponges, ib. ; in Coelenterates, ib. ; 

 in MoUusca, ib. ; in Crustacea, ib. ; 

 in Mammalia, 689 ; partial, ib. ; in fowl, 

 ib. n. ; in Rhizocephala, 692 ; in fowl, 

 693 ; in pheasant, 694 ; in pig, 695 ; 

 in goat, ib. 

 Hermit crab, parasitic castration in, 326 ; 



intersexuality in, 691 

 Heron, longevity in, 722 

 Herring, 17 ; phosphorised fats in eggs of, 

 290 ; keratin in eggs of, ib. ; olupeovin 

 in eggs of, ib. sq. ; oholesterin in eggs of, 

 290 

 Heteroplastic graft of ovary, 350 sqq. 

 Heterozygote, 674 

 Heterozygosis, 641 

 Hexoses, 282 

 Hibernation, 21 

 Hippomanes, 413, 437 

 Hippopotamus, cestrous cycle in, 46 

 Histamine, 392 

 Histidine, 288, 304, 309 

 Histone, 305 sq. 



Histriboddla, fertilisation in, 184 

 Holophytum, breeding season of, 8 

 Homoplastic graft of ovary, 351 sqq. 

 Homosexuahty, 691 

 HomozygOte, 673 



Homozygosity, in-breeding and, 217 sq. 

 Hormone of ovary, 577 



Horse, heat during gestation in, 33 n. ; 

 oestrous cycle in, 46 sq. ; period of 

 gestation in, 46 ; ovulation in, 131 ; 

 artificial insemination in, 175, 178, 

 648 sq. ; sterility in, 216 ; in-breeding 

 in, ih. ; rejuvenescence in, 223 sq. ; 

 ampulla of Henle in, 240 ; composition 

 of semen in, 297 ; effects of castration 

 in, 325 ; foetal membranes of, 413 ; 

 yolk-sac in, 420 ; placenta of, 428 sq. ; 

 blastodermic vesicle of, 429 ; tropho- 

 blast of, ib. ; source of foetal iron in, 

 434; parturition in, 568 sq. ; pro- 

 longed gestation in, 578 ; growth of 

 mammary gland in, 606 ; sterility due 

 to overfeeding in, 631 ; sterility of 

 hybrid with zebra, 642 ; inheritance of 

 fertiUty in, 643 ; causes of sterihty in, 

 646 ; abortion in, 653 sq. ; foetal 

 atrophy in, 656 ; sterility in, 658 

 dimorphism of spermatozoa in, 678 n. 

 number of chromosomes in, ib. 

 growth of, 706, 710 ; puberty in, 714 

 menopause in, 717 ; senescence in, 721 

 longevity in, 722 



Horse-breeding, 216 



Hybridisation, 199 ; sterility caused by, 



210 ; in frog, ib. ; in Triton alpestris, 

 ib. ; in Pdodytes, ib. ; in Bufo, (b. ; of 

 cattle and biaon, 211; in Strongylo- 

 centrotus, 212 sq. ; in Echinus acntus, 



211 sq. ; in. Echinus miliwris, 211 sqq. ; 

 in Echinus esculent/as, 211 sq. ; in 

 Astcrias, 212 ; in MytiVas, 213 ; in 

 fishes, ib. ; in Echinoids, 219 ; of lion 

 with jaguar, 641 ; in geese, ib. ; in 

 Cani's, ib. ; of Bos taurus and Bos 

 indicus, ib. ; of Bibos grunnicus and 

 Bibos gaurus, ib. ; of Bibos frontalis 

 and Bison wmericwnus, 641 ; of cow 

 and Bison bonasv^, 642 ; of horse 

 and zebra, ib.; of bee, 666. See also 

 MendeUsm 



Hydatina, sex-determination in, 667 ; 

 influence oi food on, 668 



Hydatina senia, 8e;s-determination in, 606 ; 

 parthexjogenesjf in, 670 ; dimorpljjenii 

 of ova in, 679 



Hydrsemia of pregnancy, 556 



Hyd/ra orientdlis, reproduction of, 6 sq 



Hydroids, alternation of generations in 

 marine, 7 



Hydrometra during menopause, 715 



Hydrops graviditatis, 552 



Hyena orocuta, clitoris in, 261 sq. 



ffylomys, see Malayan hedgehog 



Hymen, 71 sq., 582 



Hymenoptera, sex-determination in, 667 



Hypercholesterineemia in maternal or- 

 ganism, 542 



Hyperglycemia, during pregnancy, 462 ; 

 effect of, on glucose metaboUsm, 463 



Hyperlactation in man, 600 



HjrpernephroHiata, 385 



Hyperpituitarism, 383 sq. 



