738 



SUBJECT INDEX 



of, ib. ; sodium in 6gg of, ib. ; calcium 

 in egg of, ib. ; magnesium in egg of, ib. ; 

 iron in egg of, ib. sq. ; phosphorised fats 

 in egg of, 279 ; luteins in egg of, 281 ; 

 phosphorus in egg of, 278, 282 ; 

 livetin in egg of, 283, 286; effect of 

 castration in, 323 sq., 334 sqq. ; foetal 

 intersexuahty in, 339 ; ovariotomy in, 

 341 sqq. ; thymectomy in, 380 ; fertility 

 in, 627 ; inheritance of fertility in, 

 643 sq. ; sex linked characteristics in, 

 677 ; hermaphroditism in, 689 n., 693 

 sq. ; intersexuality in, 695 ; effects of 

 castration in, 699 ; effects of ovariotomy 

 in, ib. ; growth of, 706, 708, 711 



Fox, breeding season in, 4, 50 ; period bf 

 gestation in, 50 



Fox-hounds, in-breeding in, 216 



France, 'birth-rate in, 660 ; sex-ratio in, 

 687 



" Free-martin," 689, 694 sq. 



Frog, breeding season in, 18 sqq. ; matura- 

 tion of ova in, 128 ; polar body in, ib. ; 

 discharge of ova into oviduct in, 136 ; 

 form of spermatozoa in, 169 ; artificial 

 impregnation in, 176 ; hybridisation 

 in, 210 ; life cycle in, 227 sq. ; partheno- 

 genesis in, 234, 316 ; egg-membrane in, 

 290 ; ranovin in egg of, 291 ; ferment 

 of gonads of, 318 ; internal secretion 

 of testes in, 337 sq. ; transplantation 

 of testes in, ib. ; " summer cells " of, 

 385 ; sex-determinatiori in, 662 sq., 668 ; 

 sex-reversal in, 693 



Fruit-fly, sexual attraction in, 12 



FunduVus, chromosomes in, 206 ; life 

 cycle in, 227 



Fur seal, oestrous cycle in, 54 



Oadus aiglefirms, chemistry of spermatozoa 



of, 308 

 Gadns morrhua, chemistry of spermatozoa 



of, 305 

 Galaotogogiie, 597, 604 ; corpus luteum 



Extract as, 621 

 Galactophorous sinuses of udder, 586 

 Galeopitheci, placenta of, 409 

 Galeopiihecus volans, uterine cycle in, 92 

 Galago agisymbanus, placenta of, 428, 440 

 Galgulus oculatus, sex-determination in, 



673 ; dimorphism of spermatozoa in, 



ib. ; number of chromosomes in, ib. 

 Gallus bankiva, fertility in, 628 

 Gametes, assortive mating among, 210, 



214 sq. ; reduction of vitality of, 220 ; 



sex-determination by, 671 sq: See also 



Ova and Spermatozoa 

 Gsiaeous metabohsm, 390 

 Qasteropods, maturation of ova in, 128 

 Gaur, see Bibos gaurus, 641 

 Gayal, oestrous cycle in, 45. See also 



Bibos frontalis 



Oazella dorcaSj oestrous cycle in, 45 



GazeUe, 259 



Geese, hybridisation in, 641 



" GewebspUz," of man, 493 



Genera, sterility between, 640 



Generative organs, innervation of, in 

 female. Chapter XII. ; effect of aphro- 

 disias on, 638 



Genito-brural nerve, 270 



Gerbillus Aerfipes,' oestrous cycle in, 37 



Germanjr, birth-rate in, 660 



Germ-ceUs, effect of alcohol on, 209 ; 

 effect of lead on, ib. ; effect of X-rays 

 on, ib. ; effect of external conditions 

 on, 208 sqq. ; effect of soma on, 208 sqq. 

 See also Gametes 



Germinal layers, inversion of, in mouse, 

 •468 ; inversion of, in guinea-pig, 473 



Germinal spot, 109. See Nucleolus 



Germinal vesicle, 109; See Nucleus 



Gestation, heat during, 33 n. ; sac of 

 rabbit, 452 ; duration of, 577 sq. ; 

 prolonged, 577 sqq. ; prolonged, in 

 horse, 578 ; prolonged, in cow, ib. ; 

 prolonged, in DipodiUus simoni, ib. ; 

 prolonged, in man, ib. ; prolonged, in 

 Meriones shawi, ib. ; prolonged, in 

 Meriones longifrons, ib. ; in Mtis rrmscu- 

 lus, ib. ; prolonged, in mice, ib. sq. 



Gestation period, 29 sqq. ; in dog, 30 ; 

 in seal, ib. ; in Echidna, 35 ; in 

 Marsupialia, ib. sq. ; in Marsupial cat, 

 36 ; in Dusyurus viverrinus, ib. ; in 

 Mus decunumus, 37 ; in Mus rattvs, 

 ib. ; in Cavia porcellus, ib. sq. ; in 

 cattle, 43 ; in roe-deer, 43 n. sq. ; in 

 camel, 45 ; in walrus, ib. ; in pig, 46, 

 68 n. ; in horse, 46 ; in elephant, 47 ; 

 in dolphin, 48 ; in dog, 50, 442 ; in 

 wolf, 50 ; in fox, ib. ; in Lycaon 

 pictus, ib. ; in cat, 51, 442 ; in wild 

 cat, 52 ; in lion, 53 ; in tiger, ib. ; 

 in puma, ib. ; in bear, ib. ; in ferret, 

 ib. ; in polecat, ib. ; in badger, 54 n. ; 

 in walrus, 55 ; in hedgehog, ib ; in 

 Macacus, 59 ; in Macacus nemestrinus, 

 ib. ; in Ceircopithecus cynosurus, ib. ; 

 factors influencing duration of, 68 ; 

 in Southdown sheep, ib. ; in Merino 

 sheep, ib. ; in opossum, 417 sq. ; 

 in Dasywrus, 418 ; in Perameles, 419 ; 

 in rabbit, 456 ; size of litters in relation 

 to, 624 



Giant-cells of mouse, 469 sq. 



Gigantism, 323 



Giraffe; oestrous cycle in, 45 ; penis of, 

 259 ; placenta of, 432 



Glands of BarthoUni, 253 



Glands of Duverney, 253 



Glands of Morgagni, 251 



Glands of Skene, 242 



Glans penis, 254, 260 sq. 



GlobiiUns, 286 sq. ; of colostrum, 595, 

 619 



Gluooproteih in white of egg, 287 



