Index 



311 



upon, 36 ff , ; rate of, 28 S. ; suppres- 

 sion dt, by addition of KCN, 26, 71; 

 temperature coefBcient of, 33. 



Oxygen, prolongation of the life of the 

 egg by lack of, or addition of KON, 

 85 ff. 



Oxygen consumption, coefficient of, 

 162; determination of, 26 ff.~, 114 ff., 

 152 ff., 155 fl., 161, 166 ft. 



Palla, 278. 



Parthenogenesis, artificial, and fertili- 

 zation with sperm in the same egg, 

 233 ff . ; and heredity, 291 fl. ; and 

 hybridization by sperm, 300 fl. ; 

 effect of the agencies of, upon oxida- 

 tions, 113 ff.; history of the earlier 

 experiments on, 47 fl. ; in the eggs 

 ol anneUds, 257 fl.; in frogs, 271 fl.; 

 in molluscs, 267 fl. ; in plants, 277 fl. ; 

 in the sea-urchin, 65 fl. ; in the star- 

 fish, 249 fl.; Induced, by bases, 147 

 ff. ; by ethyl acetate, 66; by foreign 

 blood and cell extracts, 191 fl. ; by 

 haemolytic agents, 68 ff . ; by hyper- 

 tonic solutions, 57 fl., 159ff.;.by 

 monobasic fatty acids, 67 fl. 



Parthenogenesis, natural, In Insects, 

 43 ff.; in starfish, 255 fl. 



Parthenogenesis, osmotic, 57 ff . ; analy- 

 sis of method of, 159 fl. 



Parthenogenetic egg, cytological 

 changes in, 113 ff., 123ff. 



Patella, 230. 



PermeabiUty of fertilized and unferti- 

 lized eggs, 121 ff.. 136 ff., 149 fl. 



Pfluger, 275. 



Physiological efficiency of isosmotic 

 solutions, 127 S. 



Pi§ri, 201. 



Polynoe, 7, 8, 73, 149, 153, 244 fl., 247, 



268, 281; fertiUzation of, 257 fl. 

 Pplyorchis, 130. 

 Prostheceracus, 265. 

 Protoplasm, cleavage of, 20. 

 Psyche helix, 43. 

 Peychidae, 46. 

 Pycnopodia, 197. 



Quincke's albumin soap, 21. 



Badiimi, effects of, on sperm, 229. 



Rana, 272. 



Sana fusca, 49. 



Rana pipiens, 274. 



Rana silvatica, 274. 



Rana sphenocephala, 274. 



Batzebiu'g, 43. 



Reaction velocity, effect of tempera- 

 ture on, 26, 32 ff. 



Biaumur, 43. 



Ries, 217. 



Ringer, 54, 62. 



Ringer solution, 52, 110, 116, 147 ff., 

 161, 263, 269, 304 ff. 



Robertson, T. B., 21 ff., 194, 200, 206, 

 214 fl. 



Roux, W., 49. 



Samassa, 25. 

 Schmid, 45 fl. 

 Scott, 265. 



Segmentation of the egg, 20 ; tempera- 

 ture coefficient of the velocity of, 

 32 fl. 



Sex, determination of, in the frog, 275. 



Shearer, 71, 170. 



Siebold, von, 43 fl., 47 fl. 



Sipunculua, 247. 



Snyder, C. D., 102. 



Solenobia, 43, 46. 



Sperm extract, fertilizing effect of, 

 201 ff. 



Spermatozoon, action of, upon the 

 egg, 225 fl. ; eflects of radium upon, 

 229. 



Sphaerechinus, 201 fl., 223; fertilized 

 with sperm of Strongylocentrotus, 300. 



Starfish eggs, artificial parthenogenesis 

 in, 249 fl. ; maturation of, 243 fl. ; 

 natural parthenogenesis in, 255 fl. 



Stenotomus, 297, 299. 



Streaming phenomena, 21. 



Strongylocentrotus franciscanus, 56, 58 



fl., 186, 198, 203, 206, 222, 228, 230; 



fertilized with sperm of molluscs, 



230, 294; sperm of, used to fertilize 



' eggs of sea-urchin, 292 fl., 296. 



Strongylocentrotus lividus, 114, 116, 221 

 fl. ; sperm of, used to fertilize Sphae- 

 rechinus eggs, 300. 



Strongylocentrotus purpuratus, 6, 8, 

 56, 58 fl., 61, 65 fl., 71, 74, 77, 80, 

 86 fl., 89, 91, 93, 96, 99, 102 fl., 107 

 fl., 110 fl., 123, 127, 130, 132, 137, 

 146, 150 fl., 159, 178, 186, 190, 194, 

 fl. , 197 ff . , 200, 203 ff . , 207, 209, 213 ff. , 

 217, 219 ff., 237, 240, 247, 252, 261, 

 268, 287 fl.; blastula stage of, 23; 

 concentration of HO ions necessary 

 for the development of, 34 ff . ; 

 cytological changes in the eggs of, 

 123 fl. ; effect of lack of oxygen or 

 presence of KCN on development 

 of, 30 ff . ; gastrula stage of, 23 ; 

 hybridization between, and Asterias, 

 225 ff., 291 ff.; and S. franciscanus, 

 292 ff., 296; increase of acid content 

 of the egg of, 40 fl. ; mechanism of 

 membraneformationin, 17fl. ; oxygen 

 consumption of eggs of, 27 fl., 114 fl., 

 152 fl., 155 fl., 161 fl., 166 fl.; pluteus 

 stage of, 23. 



Tangl, 38. 



Temperature, cytolysis produced by 

 increase of, 185; eflect of, upon 

 development, 73 fl., 252 fl. 



Temperature coefficient, determination 

 of, for the velocity of segmentation, 

 32 fl. ; of development, 101 ff. ; of 

 membrane formation by means of 

 acids, 146; of oxidations, 33. 



Tennent, 293, 301. 



Thalassema, 7, 73. 



Thalassema mellita, 245, 263 ff. 



Thomson-Gribbs principle, 218. 



Tlchomiroff, A., 47 ff. 



Traube, Moritz, 42. 



Van't Hoff, 34, 101. . 



Van't Hoff solution, 34 fl., 60, 163 fl., 



261, 267. 

 Vespa, 46. 



