INDEX 



Acetate, ethyl, fertilizing effect of, 66. 



Acids, chemical coiistitution and rela- 

 tive physiological efttciency of, X33 

 ff.; monobasic fatty, fertilizing ef- 

 fect of, 67 fl. 



Acmaea, 267. 



Activation, osmotic, of the unfertilized 

 egg, 57 fl. 



Amphitrite, 12, 63, 265. 



Antedon, 293. 



Apus, 46. 



Arbacia, 18 fl., 27 fl., 50, 54, 56, 65, 

 69, 71, 73, 88, 92 ff., 122, 127, 147 fl., 

 159, 165, 186 ff., 194, 197, 201 ff., 

 213, 219, 237, 252, 281; osmotic 

 activation of, 57 fl. ; temperature 

 coefficient, for the velocity of seg- 

 mentation in, 32 fl. ; of oxidations 

 in, 33. 



Arbacia punctulata, 222. 



Arbacia pustulata, 221 fl. 



Arbacia pustulosa, 26 fl. 



Arrhenius, 101. 



Artemia, 46. 



Ascaria megalocephala, 216. 



Asterias, 12, 197, 203, 281, 284; sperm 

 of, used to fertilize eggs of sea- 

 urchin, 225 fl., 291 fl. 



Asterias forbeaii, 63, 243, 252 ff., 255. 



Asterias glacialis, 254. 



Aslerina. 7, 197, 203, 216, 264, 288; 

 artificial parthenogenesis in the eggs 

 of, 250 fl. 



Astrospheres, formation of, 74, 124 fl. 



Auduinia, 230. 



Baltzer, 293. 



Bancroft, 16, 273, 275, 295, 304. 



Barth616my, 45 ff., 47. 



Bases, activation of the unfertilized 

 egg by, 147 fl. 



Bataillon. 217, 235, 272 fl., 299. 



Batrachus tau, 294. 



Berkeley, Lord, 131. 



Berlepsch, von, 44. 



Blastomeres, fertilization of, with 

 sperm, 237 fl. v 



Blood and cell extracts, foreign, ferti- 

 lizing eflect of, 191 fl. 



Bohn, G., 188. 



Bohr, 38. 



Bombyx mori, 44 ff., 47 ff. 



Bonnet, 43. 



Boursier, 47. 



Boveri, 3 ff., 29, 51 fl., 236, 240 fl., 303. 



Brachet, 273. 



Bresslau, E., 44. 



Bufo americanus, 274. 



BuUot, 265. 



Cell division, prevention of, 71, 78, 85; 



process of, 19fl., 25 fl. 

 Centrosomes, formation of, 74, 124 ff . 



Chaetopterus, 4, 6, 53 ff., 63, 231, 245, 

 263. 



Chlorostoma, 2, 230, 294. 



Chiton, 203. 



Chorophilus feriarum, 274. 



Cleavage, process of, 19 fl. 



Cohen, 101. 



Conklin, 29 ff., 303. 



Connstein, 39. 



Ctenolabrus, 294, 297, 299. 



Cumingia, 10, 269. 



Cytological changes in the partheno- 

 genetic egg, 113 ff., 123 ff. 



Cytolysis, mechanism of, 188 fl. ; mem- 

 brane formation and, 173 fl.; in- 

 duced, with bile salts, 177 fl.; with 

 distilled water, 183 fl. ; with fat- 

 solvents, 181 fl. ; with higher fatty 

 acids, 185 ; with increase of tempera- 

 ture, 185; with isotonic solutions, 

 186 fl.; with saponin, 115, 174 fl.; 

 with soaps, 178 ff. 



"Cytolysis, blacli," 89 fl.; white, 91. 



DeGeer, 43. 



Dehome, 273. 



Delage, 16, 130, 170 ff., 254, 303. 



Delage's solution, 170 fl. 



De Meyer, J., 303. 



Dendrostoma, 191 fl., 196. 



Development, affected by temperature, 

 73 fl. ; comparison of rate of, in pure 

 and hybrid forms, 295 fl. ; is it 

 possible without membrane forma- 

 tion or without corrective factor, 

 219 ff.; morphology of, 17 fl.; tem- 

 perature coefficient of, 101 fl. ; pre- 

 vention of, by lack of oxygen, 25 fl., 

 77 ff.; by addition of KCN, 26 ff., 



. 77 fl. 



Dewitz, J., 49. 



Disintegration, after membrane forma- 

 tion, prevention of, by addition of 

 KCN or lack of oxygen, 26 fl., 77 f., 

 85 fl. ; by exposure to hypertonic 

 solution, 95 fl. ; of fertilized eggs, 

 after treatment with aerated hyper- 

 tonic sea-water, 89 fl. ; process of, 

 after artificial membrane formation, 

 at room temperature, 74 fl. ; at low 

 temperature, 76. 



Driesch, 240. 



Dzierzon, 43 ff. 



Echinus, 170, 188. 



Echinus microtuberculatus, 303. 



Elder, 217, 228. 



Electrical conductivity of fertilized and 



unfertiUzed eggs, 122 fl. 

 Embryogenesis from the spermatozoon, 



303 ff. 

 Erdmann, Miss, 29. 



309 



