1596 



SUBJECT INDEX 



Sexual maturation (cont.) 



man, cultural factors, 14G2 1465 

 rat 



kind of carbohydrate and, in female, 685 

 protein diet and, in female, 684 

 Sciara, in triploid hybrids, 31 

 Sexual precosity 



boys, Leydig cell tumors and, 350 

 fowl, thyroid and, in males, 1108 

 mammals, follicle-stimulating hormone and, in 



females, 244 

 rat, gonadotrophin stimulation and in female, 

 264 

 Sexual segment 

 Anguis, orchiectomy and, 1045 

 Anolis, testosterone and, 1068 

 Eumeces, androgen and, 1047 

 Lacerta, orchiectomy and, 1045 

 Natrix, orchiectomy and, 1045 

 reptiles 



seasonal changes, 1041 

 sex dimorphism, 1041 

 structure, 1041 

 Sceloporus, estrone and, 1068 

 Thamnophis, androgen and, 1045, 1047 

 Uromastix female, androgen and, 1047 

 Sexual underdevelo])nient and behavioral matura- 

 tion, 1386-1387 

 Sexuality 

 degrees 

 in Melandrium, 37-38 

 in Rumex, chromosome balance and, 41 

 sex comb teeth as measures of, in Drusuphila, 



11-12 

 time of establishment in Sciara, 32 

 Sharks, sperm storage in female, 1055 

 Sheep 



adrenal cortex, production of progesterone, 973 

 blastocyst structure, 850 

 breeding season, illumination and, 501-502 

 corpus luteum 



functional life, 537 



functioning, neurohumoral control, 539 

 developing ovum 

 cleavage rate, 846 

 tubal transport time, 846 

 development of behavior, parental care and, 



1358 

 ejaculate, volumetric data, 726 

 ejaculation potential, 723 

 epididymis 



distribution of sperm, 713 

 histology, 714 

 estrogen-progesterone relations, vaginal com- 

 pared with neural tissues, 1205 

 estrogen thresholds, vaginal compared with 



estrous behavior, 1189 

 estrus 



postpartum, 458 

 visual stimuli and, 277 

 female genital tract, physicochemical deter- 

 minations, 416, 74i-742 

 feminine behavior by females, androgen and, 



1196 

 freemartin problem, 146 

 hypophyseal acidophils 



carminophil-orangeophil distinction, 177-178 

 prolactin in, 176 

 somatotrophin in, 176 

 hypophyseal basophils, 185 

 hypophyseal gonadotrophins 

 cyclic fluctuations, 259-260 

 during anestrum, 501 



Sheep (cont.) 



hypophyseal gonadotrophins (cont.) 



goiHulccloinv and, 258 



seasonal liurtuations, 258, 259-260 

 hypopliysis, anatomy, 166 

 mammary tissue RQ, insulin and, 619 

 masculine behavior by female, 1191 



androgen and, 1197 

 mating behavior, female, 1174 



progesterone and termination of, 1189, 1206 



progesterone-estrogen and, 1189 

 mating behavior, male, thyroid and, 347, 1210 

 milk-ejection, hypothalamic stimulation and, 



1323 

 mother-voung relationship, development, 1335- 



1336 

 ovarian follicular growth, 455 



during anestrum, 500 



during pregnancy, 458 

 oviduct epithelium 



histochemical characteristics, 824 825 



structure, 824 

 ovulation 



corpus luteum and, 506, 519 



estrogen and, 268, 515 



olfactory stimuli and, 277 



progesterone, 260, 271, 517 



temporal relation to heat, 514 



visual stiinvili and, 277 



without estrus, 502 

 ovum 



fertilizable life, 849 



postovulatory, 818 



size, 812 



transfer, 800 



tubal, 828 

 parental behavior, retrieving, 1318 

 pars intermedia, staining reactions, 199-201 

 pelvic relaxation, 1009 

 placenta, fetai-niaternal junction, 916 

 placental histochemistry, 922, 924, 927, 928 

 placental type, 908 

 pregnancy 



blood constituents, 989 



blood gestagen levels, 965, 966, 969-970, 971 



length, 961 



ovary and, 970-971, 1003 



placental hormones and, 1008 



toxemia, inanition and, 690 



progesterone, rate of secretion, 474-475 

 prostate, 369 



secretion, prostaglandin in, 390 

 relaxin in blood, 973 

 reproduction 



feed-level and, 684 



female, vitamin E and, 686 



neural lesions and, 279 

 reproductive cycle, uterine distention and, 461 

 scrotum, temperature gradient, 318-319 

 semen, constituents, 381-385, 386-388, 390 

 seminal vesicle secretion, sorbitol in, 384 

 sexual maturation in female, 503 

 site of insemination, 727 

 social behavior, development, 1257 

 sperm 



antigens, 745 



duration of fertilizing capacity, 738 



enzymes, 755-756 



epididvmal, 762 



flrsi appearance of, 308 



nicialu,li-ni. 759-760 



nunilici- ai site of fertilization, 738 



rate of production, 713 



