I.NDKX 



upon, 36 ff.; rate of. js ir . 



sion of, by addition of K('\. 26. 71 . 



temperature coefficient of. 33. 

 Oxygen, prolongation of the life of the 



egg by lack of. or addition of K('\. 



s5 ff. 

 Oxygen Consumption, coefficient of, 



162; determination of. 211 ir.. 11 tr. 

 ir>2 fT., 15.-) tr., i6i. Kit; ir. 



Palla. 27S. 



Parthenogenesis, artificial, and fertili- 

 zation with sperm in the same egg. 

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

 hybridization by sperm. 300 iv ; 

 effect of the agencies of. upon oxida- 

 tions. 113ff.; history of tin- earlier 

 experiments on. 47 ff. ; in the eggs 

 of annelids. 257 If.; in frogs, 271 ff . ; 

 in molluscs, 267 ff . ; in plants, 277 If.; 

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

 fish, 249 ff.; induced, by bases. 147 

 ff . ; by ethyl acetate, 6<i; by foreign 

 blood and cell extracts, 191 if.; by 

 tuemolytic agents, fix ff. ; by hyper- 

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

 monobasic fatty acids, 67 ff. 



Parthenogenesis, natural, in insects. 

 43 ff. ; in starfish, 255 ff . 



Parthenogenesis, osmotic, 57 ff. ; analy- 

 sis of method of, 159 ff. 



Parthenogenetic egg, cytological 

 changes in, 113ff., 123ff. 



Patella, 230. 



Permeability of fertilized and unferti- 

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



Pfluger, 275. 



Physiological efficiency of isosmotic 

 solutions, 127 ff. 



Pieri, 201. 



Polistes, 46. 



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

 268, 281; fertilization of, 257 ff. 



Polyorchis, 130. 



Prostheceracus, 2(55. 



Protoplasm, cleavage of, 20. 



Psyche helix, 43. 



Psychidae, 46. 



Pycnopodia, 197. 



Quincke's albumin soap, 21. 



Radium, effects of. on sperm, 229. 



Rana, 272. 



Rana fusca, 49. 



Rana pipiens, 274. 



Rana siltatica, 274. 



Rana sphenoceptialu, 274. 



Ratzeburg, 43. 



Reaction velocity, effect of tempera- 

 ture on, 26, 32 ff. 



Reaumur, 43. 



Kirs. 217. 



Ringer. 54. til'. 



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

 K;I. 263. 269. 304 tr. 



Robertson, T. 13., 21 ff.. I'.M. _'()(. 206. 

 _' 1 \ ff. 



ROUX, W., 4'.. 



Sainassa, 25. 

 Schmid. 45 ff. 

 SCOtt, 2f.5. 



Segmentation <>f tin- egg. 20; tempera 



lure coellicient of the \eloi-il \ of, 

 32 If. 



Sex, determination of. in the frog. 275. 



Shearer, 71, I7O. 



Siebold. von, 43 If.. 47 If. 



Si /in in- ul ii.-i, 247. 



Snyder. ( '. I).. 1O2. 



Snl, iiiiliin. 43. lii. 



Sperm extract. fert ili/.i llg effect of. 



201 ff. 

 Spermatozoon, aeiion of. upon t he 



eU-C, 225 If. ; effects of radium upon 



229. 

 Splnnr,-, -liiim*. 201 If.. 223; fertili/.e.l 



with sperm of Strum/://, in ntrntn*, :<O() 



Starfish eggs, artificial parthenogenesis 

 in, 219lf. ; maturation of, 24:{ff.; 

 natural part henogene.sis in. 255 ff. 



SI, -nnt inn i/x. 2'.7. 2'.'.. 



Streaming phenomena. 21. 



Strongylocentrotus frum-isi-nniix, 56. 5s 

 tf., 186, 19X. 203, 2011. 222. 22S. 23O; 

 fertilized with sperm of mollusc- 

 230, 294: sperm of. used to fertilize 

 eggs of sea-urchin, 292 ff.. 29ii. 



Stronyylocentrotus liritlnx, 114, 1 Hi, 221 

 ff.; sperm of , used to fertilize X/Aae- 

 recfiin UK eggs, 300. 



Stroiii/ylocentrotus purpuratus, 6, S. 

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

 86 ff.. 89, 91, 93, 96, 99, 102 ff., H)7 

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

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

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

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

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

 concentration of HO ions necessary 

 for the development of, 34 ff.; 

 cytological changes in the eggs of. 

 123 ff.; effect of lack of oxygen or 

 presence of KCN on development 

 of, 30 ff.; gastrula stage of, 2:: 

 hybridization between, and Asteria*. 

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

 292 ff., 296; increase of acid content 

 of the egg of, 40 ff . ; mechanism of 

 membrane formation in. 17ff.; oxygen 

 consumption of eggs of, 27 ff.. 1 14 if.. 

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

 stage of, 23. 



Tangl, 3.s. 



Temperature, cytolysis produced by 

 increase of, 185; effect of, upon 

 development. 73 ff., 252 ff. 



Temperature coefficient, determination 

 of, for the velocity of segmentation. 

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

 membrane formation by means of 

 acids. 146; of oxidations, 33. 



Tennent, 293, 301. 



Thalassema, 7, 73. 



Thalassema in, lit/, i. 245. 263 ff. 



Thomaon-Gibba principle. 2 is. 

 Tichomiroff, A., 47 tr. 

 Traube. Moritz. 42. 



Van't Hoff, 34, 101. 



Van't Hoir solution. ::i ff., 60, 163 ff., 



261. 267. 

 i pa, i'i 



