INDEX 



971 



R 



Rabbit, artificial insemination in, 229 

 early development of egg of, 296, 300 

 Fallopian (uterine) tube of, behavior in 



sperm transport, 193 

 fertilization in, 253 

 Rachis (shaft), of feather, 571 

 Rahn, H., 197. 884 



Rami, of autonomic nervous system, 826 

 Rana, role of thyroid gland in metamor- 

 phosis of, 883 

 Rana catesbiana, xviii, brain of, 833 

 pelvic girdle of, 689 

 testis in relation to reproductive ducts, 

 19 

 Rana cavitympanuin, tympanic membrane 



of, 852 

 Rana fusca, first cleavage plane in, 287 

 Rana pipiens (leopard frog), xviii 



branchial-pouch-groove perforation, 640 

 characteristics of egg, site of fertilization, 

 and place of sperm entrance into 

 egg, 204t 

 cleavage in, 292, 294 

 deposition of gelatinous layers of egg of, 



907 

 development of gills in larva of, 641 

 development of heart of, 752 

 development of intestine in, 626 

 development of liver rudiment of, 623 

 development of skin of, 568 

 early development of, 294 

 early neural tube stage of, 466 

 effect of mammalian pituitary gonado- 



trophins on ovary of, 74 

 external gill filaments of, 636 

 external views of embryo, 470 

 fertilization phenomena in, 239 

 ' first cleavage plane in, 287 

 formation of blastocoel of, 295 

 gill development in tadpole of, 642 

 history of blastopore in embryo of, 416 

 peritoneal cilia and ostium of oviduct of, 



195 

 pronephric and mesonephric kidneys of, 



779 

 skin of, 566 

 sperm survival of, 198 

 spermatogenesis in, 23 

 10 mm. tadpole of, 538-539 

 venous system of, 740 

 Rana sylvatica, xviii 



cleavage in egg of, 292, 293 

 external views of embryos, 470 

 formation of gray crescent in, 293 

 normal development of, 293 

 pronephric kidney of, 775 

 development of, 779 



Rana temporaria, association of sperm and 

 egg pronuclei in, 214 

 origin of blood cells in, 735 

 Rankin, R. M., 885 

 Ransom, R. M., 47 

 Ranson, S. W., 810 

 Ranvier, node of, 819 

 Rasmussen, A. T., 6, 665 

 Rat, female reproductive organs of, 66 

 origin of germ cells in, 119 

 ovarian capsule around ovary of, 194 

 Rathke's pouch, 601, 877 

 Ratitae, xix 



Rattus rattus (rat), characteristics of egg, 

 site of fertilization, and place of 

 sperm entrance into egg, 206t 

 Rawles, M. E., 592 

 Reagan, F. P.. 731 

 Receptor organs, 841 

 Rectal area, 630 

 Rectal recess, 803 

 Rectum, 787 

 Redi (1626-1697), 57 

 Reflex, suckling, 107 

 Reflex arc, 808 



component structures of, 809 

 Relaxin, 103 

 Remak's fibers, 820 

 Ren, 772 



Renal, use of term, 772 

 Renal arteries, 762 



Renal lobe, of developing kidney in mam- 

 mal, 786 

 of developing mammalian kidney, 787 

 Renal portal system, of frog tadpole, 776 

 Renal pyramid, 787 



Renal units, development of in mammalian 

 kidney, 786 

 metanephric, formation of in chick em- 

 bryo, 784 

 types of, 770 

 Reproduction, asexual, 53, 55 



sexual, 55 

 Reproductive climax, 92 

 Reproductive cycle, 92 



female, changes in reproductive organs 

 and mammary glands in bitch, 

 102 

 in cow, 104 



in lower vertebrates, 96 

 in sow, 702 

 follicular phase of, 91, 93 

 luteal phase of, 91, 93, 98 

 male, relation to reproductive conditions 



in the female, 47 

 of human female, 707 



