180 



SUBJECT INDEX 



Polar body — continued 



first polar body, disappearance of 22, 75 ; 

 inhibition of 20, 21, 40 (Table 2), 45, 75 



second polar body, induction of 36; in- 

 hibition of 39, 40 (Table 2), 45, 46, 75 



polar-body-like structure containing egg 

 chromatin 40; containing sperm head, 

 47,77 

 Polyandry, mechanism of 43, 47; incidence 



of 41-43 (Table 3) 

 Polygyny, mechanism of 40 (Table 2), 45- 



47; incidence of 41, 43 

 Polymorphonuclear leucocytes penetrating 



into eggs 92 

 Polyspermy (see Block to polyspermy, Pro- 

 nucleus, Polyandry) 

 Pronucleus, augmentation of dna in 31; 

 growth and development of 24-31, 43, 

 46-48; numbers of, in one egg 23, 24; 

 sizes of 17, 25, 26, 43, 46-48 



androgenesis 38, 39 



differences between male and female pro- 

 nuclei: volume 28, 29; staining proper- 

 ties 31, 32 



female, diploid 23, 24, 36, 38, 40 (Table 

 2), 41; origin of 24,25, 30 



fusion of male and female or of two male 

 pronuclei 26, 39 



gynogenesis 38, 39, 47 



male, origin of 24, 25, 30; polyploid 41 



nucleocytoplasmic ratio 29 



polyandry 41—47 



polygyny 23, 24, 40 (Table 2), 41, 45, 46 



rudimentary parthenogenesis, with one 

 nucleus 36-38, 40 (Table 2), 41, 47; 

 with two nuclei 39, 40 (Table 2) 



synchronization between male and female 

 pronuclei 47, 48 



syngamy 9, 26, 27, 31, 35, 43, 47 

 Protein synthesis 18, 52, 63 



Radiomimetic drugs, treatment of sperma- 

 tozoa with 36 



Recovery of eggs, from: Fallopian tube in 

 living animal 105; ovary and Fallopian 

 tube ^103-105 



Regulation to diploidy 36, 76, 79 



Reproduction, asexual 7 



Ribonucleic acid (rna), absence from pro- 

 nuclear nucleoli 32, 33; in: egg cyto- 

 plasm 55, 56, 59-63; oocyte nucleoli 

 17, 18 



Ribosomcs 55, 56, 60 



Selective fertilization 96 



Sex chromatin 52 



Shell and shell membrane in monotreme and 

 marsupial eggs 14, 102 



Sizes of eggs 13-15, 52, 53, 56, 57 



'Smoke ring' 71 (Fig. 61), 72 (Fig. 62), 79, 

 80 (Fig. 65) 



Sperm, spermatozoon, acrosome in egg 

 penetration 99, 100; antagglutin 116; 

 dimegaly of 41; dna in 24; 'giant' 41; 

 head changes in egg cytoplasm Frontis- 

 piece, 12, 24, 25, 30, 70-72; influence of 

 egg on 114-116; mid-piece in egg cyto- 

 plasm Frontispiece, 69-72; number at 

 site of fertilization 43, 89, 96; poly- 

 megaly of 41; polyploid 40, 41; size 

 of nucleus of 15; supplementary 92; 

 suspensions of, as activating stimulus 

 38, 57; tail in egg cytoplasm 44, 69-72, 

 79 

 penetration, effect on hamster cortical 

 granules 65; impermeability to, of 

 rabbit-egg mucin coat 101; into polar 

 body 77; site of 13; through cumulus 

 oophorus 99, 100; through vitelline 

 membrane 87, 88; through zona 

 pellucida 90, 92 



Spindle (see also Intermediary body), function 

 of, in cell division 65-69, 12-1 A; 

 structure of 68, 69; two first meiotic 

 spindles in one egg 21 ; two second 

 meiotic spindles in one egg 23, 45 



Syngamy of pronuclei 9, 26, 27, 31, 35, 43, 

 ^47 



T locus, effect of, on sperm penetration 

 96 



Temperatures, low, resistance of eggs to 113, 

 114, 116, 117, 137, 145 



Tetraploidy 21, 79 



Transfer of eggs between animals 6, 109- 

 111, Appendix No. 1 



Transport of eggs through Fallopian tube 

 (see Passage of . . .) 



Triethylcnemelamine and 'immediate cleav- 

 age' 77 



Triploidy 21, 23, 24, 45, 46 



Uterus, recovery of blastocysts from 105; 

 implantation in (see Implantation) 



Vesicular conglomerate 56 



