INDEX OF SUBJECTS 
Euschistis, 281. 
Evolution, 310. 
Factor, 302, 309. 
Female sex, 18. 
Fertilization, 44, 47-49, 256, ff. 
Fission, 22. 
Frog, hermaphroditism in, 205 ff. 
Fusion, of chromosomes, 254; of 
odcytes, 152, 155 ff. 
Gel, 5, 6, 9. 
Gemmule, 18, 74-75, 76, 79. 
Genes, 302, 309, 310. 
Genetics, 309. 
Genetic-continuity of chromosomes, 
255. 
Germ cell, 19-22, 101, v.s. somatic 
cell, 296-297. 
Germ-cell cycle, 28-49. 
Germinal continuity, 292. 
Germinal epithelium theory, 98. 
Germinal localization, 231. 
Germinal spot, 214. 
Germinal vesicle, 19, 20, 54. 
Germ-plasm, in Ascaris, 177, in 
Hydra, 83-85 ; in Miastor, 293; in 
polyembryony, 162; in sponges, 
80. 
Germ-plasm theory, 290-310, 
Gonochorism, 18, 191. 
Gonocyte, 71, 73. 
Gonothyrea, 89. 
Gonotome theory, 97. 
Graffilla, 157. 
Gryllus, 123, 244. 
Guinea-pig, 102, 103, 104, 227. 
Gynandromorph, 193-194. 
Haploid, 247. 
Hauptnucleolus, 214. 
Helix, 195, 196 ff., 226. 
Hemiptera, amitosis in, 137. 
Hermaphrodite, 18, 189-210, 269. 
Heterocope, 165. 
343 
Heterotypic mitosis, 46, 252, 253. 
Heterozygous, 304. 
Homologous chromosomes, 253. 
Homotypic mitosis, 46. 
Homozygous, 303. 
Honey-bee, 143-144, 261 ff., 266. 
Hyaloplasm, 4, 5. 
Hydra, 82-85, 159. 
Hydractinia, 87. 
Hydroid, life cycle of, 23. 
Hydrophilus, 113. 
Hydrozoa, 85-98. 
Hymenoptera, 143-163, 221, 235. 
Idiochromatin, 28. 
Individuality of 
255. 
Interkinesis, 299. 
Isotropism, 231. 
chromosomes, 
Jelly-fish, 23. 
Karyochondria, 279. 
Karyokinesis, 13, 14, 15. 
Karyolymph, 6. 
Karyosome, 5, 7, 213. 
Keimbahn, in Hquorea, 183, 184; 
Amphibia, 206 jff.; Cladocera, 
163 ff.; Copepoda, 165 ff.; 
insects, 106-163; nematodes, 
174-179; Sagitta, 179 ff. 
Keimbahn-determinants, 19, 211- 
244, 296, 301; genesis, 211-234; 
localization, 234-240; fate, 240- 
244, 
Keimbahnchromidien, 223. 
Keimbahnchromatin, 152 ff., 223. 
Keimbahnplasma, 108, 110, 115, 
230, 235. 
Keimbahnzelle, 104. 
Keimfleck, 214. 
Keimhautblastem, 113, 114. 
Keimstitte, 95. 
Keimwulst, 108, 110, 115, 235. 
Keimzone, 95. 
