164 



FERTILIZATION 



in sea water, 129; in tanning of 

 fertilization membrane, 10. 



Calcium, lack, effect on cortex, 

 95 ; effect on hyaline layer, 1 3 ; 

 reversal of fertilization, 119. 



release, 82-83, 94-97, 



Capacitance, decrease in hypotonic 

 sea water, 133-134; increase after 

 fertilization, 1 31-133; lack of 

 change during action potential 

 (nerve), 127; of plasma mem- 

 brane, 92-93, 131-134- 



Carbohydrate, metabolism, 69-74, 

 87; oxidative breakdown of, 69- 

 73 ; specificity in fertilizin, 26. 



Carbon monoxide, effect on O2 up- 

 take of eggs, 67-68. 



Catalase, 90. 



Cell Elastimeter, 92-93, 94, 10 1. 



membrane. See Cortex, 



Centrifugation, of eggs, 83, 93-95, 



lOI. 



Cephalin metabolism, 74-75, 87. 



Chelating agents, 31. 



Chemotaxis, of spermatozoa, 13, 

 22, 39-50; structure-action rela- 

 tionships, 43-47. 



Chinese buckthorn, enzymes in, 

 52. 



Chitin, 4. 



Chloride, in eggs, 84, 129; in sea 

 water, 129. 



Cholesterol, in cortex, 100; meta- 

 bolism, 75, 86-87. 



Cholinesterase, in spermatozoa, 89. 



Chorion, 4, 11. 



Classification of fertilization, ac- 

 cording to maturation state of 

 egg, 2-4, 60-61. 



Cleavage path, of fusion nucleus, 

 14, 16-18. 



Clotting, of protoplasm, 94-99; 

 of sea-urchin perivisceral fluid, 

 99. 



Cold-shock, effect on zona pellu- 

 cida, 115, 



Combining sites, exposure by tryp- 

 sin, 137; obliteration by perio- 

 date, 137, 



Complement, 30. 



Conductance change. See Resis- 

 tance change during action po- 

 tential (nerve). 



Constriction experiments, 103-105. 



Contraceptives, oral, 54-55. 



Contractility, of fertilization mem- 

 brane, lO-II, 



Contraction, of egg surface, 5-6 ; of 

 jelly, 36-37. 



Copulation path, of male pro- 

 nucleus, 14-18. 



Corona radiata, 5. 



Cortex, birefringence of, 91, 10 1 ; 

 cholesterol in, 100; cyclical 

 changes in, 99-100, 102; effect 

 of calcium lack on, 95 ; gelation 

 of, 94-97 ; light scattering by, 6, 

 107-108; liquefaction of, 6, 95- 

 96; rigidity of, 91-95, loi ; Shear 

 modulus of, 95 ; stiffness of, 92- 

 94, loi ; thickness of, 92-93 ; 

 Young's modulus of, 93, 95. 



Cortical alveoli, 80, 121; polysac- 

 charides in, 6. 



change, 5-7, 91, 106-108, 109, 



113, 114, 121. 



granules, 6-7, 9-^1, 35, 80, 



95, 106-107, 121 ; Brownian 

 movement of, 6 ; effect of trypsin 

 on, 10; polysaccharides in, 6. 



Cross-agglutination, relationship 

 with cross-fertilization, 138, 139. 



Cross-fertilization, 136-140; effect 

 of n, 138-139; effect of trypsin, 

 137-138 ; relationship with cross- 

 agglutination, 138, 139, 



Cumulus oophorus, 5. 



Cyanide, effect on metabolism of 

 egg homogenates, 71, 98; effect 

 on O., uptake of eggs, 67, 



Cyclical changes in cortex, 100, 102. 



Cytochrome, in eggs, 56, 58, 66-68, 



79- 

 Cytofertilizin, 24. 

 Cytolysis, relationship between 



plasmolysis and, 99-102. 

 Cytolytic agents, susceptibility of 



eggs to, loi, 102. 

 Cytoplasm, resistivity of, 131, 134- 



135- 



