Index 



239 



Streptomycin, in diluents, 81 



Strongylocentrotiis, (see also sea- 

 urchin), 114, 180 



Sturgeon sperm, 104, 106, 108 



Sturine, 106, 108 



Succinic acid, oxidation, 50, 52, 57, 

 87, 92 



Succinic dehydrogenase, 87, 92 



Sucrose, effect on sperm, 55, 152; 

 use in freezing, 64, 65; in 

 chemotaxis, 71 



Sulphate, 21, 77, 175-8 



Sulphite, 179 



Sulphonamides, excretion in semen, 

 57; in diluents, 81 



Sulphur, elementary, 154; com- 

 pounds, 21-3, 33, 56-8, 71, 77, 

 84-7, 110, 154, 176-9 



Sulphydryl-binding substances, 56- 

 8, 176-8 



Sulphydryl groups, function, 23, 

 56-8, 77, 154, 176-9 



Surface-active substances, spermici- 

 dal properties, 50, 57 



Survival of sperm, 6-9, 24-5, 60-1, 

 66-7, 78-82, 151-4 



Tail-sheath (see also sperm-tail), 

 15 



Taurine, in prostate, 20 



Temperature, effects on sperm, 12, 

 62-6 



Temperature shock, 12; preven- 

 tion, 80 



Tench, nucleic acid, 105 



Testis, role in sperm formation, 

 4-6; spermine, 162; choline, 170; 

 creatinine, 179; cytochrome, 90; 

 hyaluronidase, 94; phosphocrea- 

 tine, 180-1 



Testosterone, 69; effect on the 

 composition of semen, 113, 139- 

 45, 185-7 



Thiamine, 33 



Thioglycolic acid, effect on sperm- 

 membrane, 110 



Thiol-groups, function, 23, 56-8, 

 77, 154, 176-9 



Thiolhistidine, relation to ergo- 

 thioneine, 174, 178 



Thiol-reagents, 56-8, 176-8 



Threonine, 84, 113 



Thymine, 100, 101 



Thynnine, 106 



Thyroxine, effect on sperm, 68, 71 



Toluquinone, effect on sperm, 57 



Tonicity, as sperm-affecting factor, 

 61-2 



Transaminase, 19, 186 



Transferase activity of phospha- 

 tase, 119 



Transmethylations, 172, 178 



Transplants of accessory organs, 

 secretory function, 143-4, 186 



Transport of spermatozoa, in the 

 male and female, 6-9, 178-9 



Triwopropylphenoxypolyethoxy- 

 ethanol, effect on sperm, 57 



Trimethylbenzylammonium chlor- 

 ide, effect on sperm-membrane, 

 110 



Triphenyltetrazolium chloride, 

 effect on sperm, 56 



Trithiolpropane, effect on sperm, 

 58 



Trout semen, nucleic acid and 

 nuclear proteins, 99-109; potas- 

 sium, 43, 74; effects of oxygen, 

 dilution and ions, 73-4 



Tryptic enzyme, 1 1 5 



Tryptophan, in semen, 84, 109; 

 oxidation, 117 



Tunny fish, thynnine, 106 



Turbidity of semen, 40-1 



Turkey semen, volume and density, 

 2 



Turpentine, effect on sperm, 54 



Tyrosine, in semen, 85, 86, 108, 113; 

 oxidation, 117 



Ultrasonic waves, use for sperm 

 disintegration, 86, 100 



