Index 



237 



carbonic anhydrase, 19, 20; 

 amino acids and amines, 20; 

 phosphatase, 120; transaminase, 

 188; castration and hormone 

 effects, 120, 141-9, 186-7; trans- 

 plantation, 143-4 



Rat semen, sperm structure, 11; 

 lipids, 6; copulatory plug, 28; 

 choline, 1 69-70; irradiation effect, 

 59 



Rat seminal vesicle, 16, 187; com- 

 position of secretion, 20, 172, 

 185-7; hormone effects and trans- 

 plantation, 120, 186 



Reducing substances, 20-4, 33, 48, 

 135, 174-9; see also ascorbic 

 acid, fructose, ergothioneine 



Refractive index of sperm, 8 



Reptiles, 94, 105 



Resistance to dilution, 78 



Respiration of sperm, 49-53, 91-2, 

 117, 129-31, 152-4, 167; sub- 

 strates, 50-3 ; inhibitors, 49-51, 

 56; after irradiation, 59; pH- 

 optimum, 60; after temperature- 

 shock, 63; in presence of 'egg- 

 water', 76 



Rhinolophidae, copulatory plug, 

 28 



Riboflavin, 22, 33 



Ribonucleic acid, 5, 86 



Ring centriole, 14 



Ringer solution, as semen diluent, 

 77-8 



Ripening of sperm, 4-8, 25, 41-3, 

 90, 153-4, 178 



Rodents {see also guinea-pig, rab- 

 bit, rat), clotting phenomenon in 

 semen, 28 



Rutin, in pollen, 72 



Salmine, 106, 108 



Salmofario {see also trout), nucleo- 



protein and nucleic acid, 99, 105 

 Salmo fontinalis, constituents of 



seminal plasma, 84 



Salmon semen, mineral consti- 

 tuents, 43, 84; proteins, 84-6, 

 98-9, 106-9, 125; nucleic acid, 

 86, 103; lipids and cholesterol, 86, 

 124-5; free amino acids, 86; cata- 

 lase, 92; phosphatases, 86; andro- 

 gamones, 71 



Salt effects on sperm, 55, 62 



Sand-dollar, cyanide effect on 

 sperm, 92 



Saponin, effect on sperm, 57 



Saxostrea commercialis (oyster), 

 respiration of sperm, 50 



Scherer-Salkowski reaction, 190 



Schiff's reagent, 11, 126 



Scombrine, 106 



Scombrone, 109 



Scylliorhinus caniculus (dogfish), 

 fructose, 136 



Sea-cucumber, sperm nucleic acid, 

 104 



Sea-urchin semen (see also Arbacia, 

 Echinus, Lytechinus, Paracentro- 

 tus, Psammechinus, Strongylocen- 

 trotus), density, 74; pH, 44; potas- 

 sium, 44; glycogen, 6, 129; nucleic 

 acid, 100, 104; nuclease, 123; 

 proteins, 84, 108; proteolytic 

 enzymes and 'lytic agents', 95-6; 

 sperm-egg interacting substances, 

 69-71, 95-6; lipids and sterols, 

 125, 129; adenosine triphosphate, 

 155; creatine and creatinine, 180; 

 cytochrome, 90-2; catalase, 93; 

 copper, 90; effects of radiation, 

 oxygen, dilution and other ex- 

 traneous factors, 52-9, 74-7, 

 91-2, 114; metabolism, 50, 52, 

 56, 74, 76, 91-2, 129-31, 151 



Semen composition, tables, 2, 20, 

 21, 32-6, 84-90, 103-7, 130, 169, 

 185, 191 



Seminal duct, 7, 15, 61, 138 



Seminal plasma, origin, composi- 

 tion and function, 15-29; separa- 

 tion from sperm, 83; proteins, 



