1564 



SUBJECT INDEX 



Methods (cont.) 



rate of progesterone secretion, measurement of 



pregnanediol, 474 

 scoring of mating behavior in male, 1176-1177 

 sex differentiation 

 amphibia 

 gonad grafts, 80-81 

 parabiosis, 79, 89 

 use of hormones, 82 

 birds 



gonadal grafts, 78-79 

 use of hormones, 82 

 mammals 



cultivation of gonads in vitro, 83 

 early castration, 83 

 use of hormones, 82 

 staining, neurosecretion, 225-226 

 study 



of aggressive behavior, 1242-1243 

 of hormone effects, in vitro systems, 651 

 of living ova, phase contrast microscopy, 838 

 of spermatogenic cycle, 323 

 2-methoxyestrone 



and isocitric dehydrogenase activity, 656 

 estrogen metabolite, 649 

 Methylandrostanediol 

 and spermatogenesis, 345 



methylbisdehydrodoisynolic acid, and testis 

 atrophy, 343 ' 

 Methylcholanthrene, and prostatic carcinomas in 



rodents, 430 433 

 1 -Methyl estrone, and isocitric dehydrogenase 



activity, 656 

 17-a-Methvl testosterone, strong biologic activitv, 



399 

 Metrial gland, in pregnant rat, 913 

 Mevalonic acid and cholesterol biosynthesis, 644- 



645 

 Micropterus salmoides, genital tracts, develop- 

 ment, 1060 

 Microsaura puniila, sperm storage in female, 1055 

 Microtus agrestis 

 parental behavior 

 retrieving, 1315, 1318 

 specificity of retrieving, 1320 

 pregnancy, length, 961 

 Microtus arvalis 



female prostate in, 368 



homology with ventral prostate of male, 375 



male accessory sex glands, adrenal androgens 



and, 423 

 mother-young relations, early discriminatory 



learning, 1357 

 ovum, size, 811-812 

 parental behavior, experience and, 1333 



retrieving by male, 1314 

 population density and adrenal functioning, 



1261 

 ventral prostate, cortisone and, 424 

 Microtus californicus, reflex ovulation, 499 

 Microtus pennsylvanicus 

 litter size, 960 



parental behavior, retrieving, 1318 

 population density and adrenal functioning, 



1261 

 pregnancy, length, 960 

 Micturition pattern, dog 

 androgen and, 1347-1348 

 afferent (peripheral) regulation, 1347-1348 

 Middorsal skin from female Triton, androgen and, 



1047 

 Migration 



birds, association with fat deposition, 1139 

 hormonal stimulation, 1137 



Milk-ejection, 1321-1325 



adrenaline and, 625, 1324-1325 



conditioning to external stimuli, 1343, 1344 



electrical stimulation, 1341 



emotional inhibition, 1324-1325 



historical, 620 (V22 



hypothalamic stimulation and, 1323 



inhibitcjrv mechanism, 625 



myoepithelial cells and, 623-624, 1323-1324 



neural pathways, 625-626 



oxytocin and, 609-610, 621-625, 630, 1323-1325, 



1341 

 psychic inhibition, 624, 625 

 suckling stimulus and, 626 

 vasopressin and, 624 

 Milk let-down (see Milk ejection) 

 Mink 



identification of genetic sex, 55 



litter size, 960 



mating and corpus luteum functioning, seasonal 



changes, 533 

 ovulation 



coitus and, 277, 499 



interval after gonadotrophin release, 514 

 ovum 

 size, 812 

 tubal, 828 



yolk distribution, 811 

 pregnancy, length, 960 

 pseudopregnancy, 533 

 Mirounga anqustirostris, parturitive behavior, 



1311 

 Misgurnus 



discharge of sperm, estrogen and, 1053 

 ovarian functioning, estrogen-inhibition of, 1053 

 spermatogenesis, estrogen-inhibition of, 1053 

 Mitochondria 



distribution during cleavage, 847 

 location of ll-/3-hydroxylase, 648 

 Mitochondrial ATP activitv, progesterone and, 



660 

 Mitochondrial respiration, steroid inhibition, 660 

 Mitotic activity 

 androgen and 



in coagulating gland, 414 

 in i)r()state, 401, 411 

 in seminal vesicle, 410, 415 

 estrogen and 



in coagulating gland, 427, 429 

 in prostate, 427, 429 

 in seminal vesicles, 427, 429 

 in uterine epithelium, 561 

 in vagina of monkey, 575 

 estrogen compared with androgen, in male 

 accessory reproductive glands, 429 

 Mole (see also Talpa europaea) 



developing ovum, free uterine period, 851 

 fate of nonfertilizing sperm, 744 

 fertilization, supernumerary sperm, 844 

 male accessory sex glands, ergothioneine in, 385 

 ovary 

 bisexuality, 86 

 masculinizing action of, 102 

 placental type, 908 

 seasonal breeder, 315-316 



urogenital sinus development, gonadal hor- 

 mones and, 122 

 Wolffian duct development, androgen and, 120 

 Molliensia 



gonopodium in female, androgen and, 1046 

 intromittent organ, 1042 

 Molothrus ater 



absence of incubation patch, 1353 



