Subject Index 



261 



isocitric dehydrogenase, 142 

 Idiosomal material (archoplasm), 



88 

 Idiosome-Golgi complex, 88 

 "Information theory" and ageing, 



230, 231 

 Insulin, effect on placenta, 141 

 Interstitial cells, appearance with 

 electron microscope, 92-96 

 appearance with light micro- 

 scope, 91, 92 

 observations on, 91-96 



Karyoplasm, condensation of, 90, 91 



Lactic acid metabolism in placenta, 



137-141 

 Leaves, senescent, catabolism of 

 proteins in, 202-205 

 metabolism of, 202-214 

 relation between cell respiration 

 and protein metabolism in, 

 207, 208 

 respiratory activities of, 205-207 

 yellowing of, 202, 206, 207, 209 

 Leydig cell, development and ageing 



changes, 91-96 

 Light, role of, in regulation of antler 



cycle, 181-183 

 Liver, glycogen in foetus, 23-25 

 mitochondria of, 101 



Masculinization in deer, 180 

 Membranous chorion (see Chorion, 



membranous) 

 Metabolism, regulation of, in ageing 



tissues, 207, 208 

 Microscopy, electron (see Electron 



microscopy) 

 Mitochondria, after intravital ex- 

 posure to foreign or toxic agents, 

 100, 101 



in adrenal gland, 101, 102 



in liver, 101 



in pancreas, 101 



in yolk sac, 101, 102 



observations with electron micro- 

 scope, 100-102 



silver granules in, 101 

 Mitochondrial changes in different 



physiological states, 100-104 



Mole embryo, studies on, 16 

 Miillerian ducts, role of endogenous 



sex hormones in development 



of, 3-17 

 role of endogenous sex hormones 



in retention or loss of, 3 



Oestradiol, role in differentiation of 



reproductive tract, 3-17 

 Oestrogen, effects on follicular 

 atresia, 60—65 

 secretion of, 48-52 

 Oestrogens, placental response to, 



142 

 Oocytes, effect of X-irradiation on, 

 34 

 formation of, 31-48 

 in compensatory hypertrophy of 



ovary, 34 

 in ovarian grafts, 33 

 number of, after hypophysectomy, 

 35 

 in relation to age, 32 

 in relation to oestrous or 

 menstrual cycle, 32 

 survival in ovarian autografts in 



monkeys, 33 

 survival in ovarian homografts in 

 rats, 33 

 Oogenesis, theories of, 31-48 

 Organ culture studies of foetal rat 



reproductive tract, 3 

 Ovarian follicles (see Follicles) 

 secretion, mechanism of, 48-52 

 tissue, regenerative capacity of, 



31-58 

 weight in rats after hypophysec- 

 tomy or hypophysectomy and 

 stilboestrol, 60, 61, 63 

 Ovary, compensatory hypertrophy 

 of, 34, 35, 51 

 histology of, in oestrogen -treated 



hypophysectomized rats, 62—64 

 secretory capacity after X-irradi- 

 ation, 49-52 

 transcience of component tissues of, 



64, 65 

 weight of, after hypophysectomy or 

 hypophysectomy and stilboes- 

 trol, 60-63 

 Ovulation, induction of, in pregnant 



guinea pig, 74-83 

 Oxygen consumption of placenta, 

 131, 132 



