368 



INDEX OF SUBJECTS 



blastomeres, 299, 319; double embryos, 



Ganglion-cell, T,y, centrosome in, 16, 224. 



Gemma;, 22. 



Gemmules, 22, 303. 



Genoblasts, 183. 



Geopkilits, deutoplasm, 116; yolk-nucleus, 



119. 

 Germ, 5, 295. 

 Germ-cells, gen-eral, 7-1 1 ; detailed account, 



88; of plants, 97, 106; origin and growth, 



108; growth and differentiation, II3; 



union, 130, 145; results of union, 149; 



maturation, 173; early history of nux;lei, 



193; in inheritance, 295. 

 Germinal localization, theory of, 296-300, 



317- 



Germinal spot, 91. 



Germinal vesicle, 90; structure, 92; in ma- 

 turation, 179; early history, 193, 245; 

 movements, 150, 255; position, 287. 



Germ-nuclei, of the ovum, 92; of the sper- 

 matozoon, 99, 103; of plants, 106, 162; 

 staining-reactions, 127, 162; in fertiliza- 

 tion, 132, 153, 160, 257; equivalence, 132, 

 155, 171; paths, 151 ; movements, 153; 

 union, 53; independence, 156, 219; in 

 Infusoria, 165; early history, 165. 



Giant-cells, 25; microcentrum, 227, 228. 



Globulin. 239, 241. 



Granules (see Microsomes), of Altmann, 21; 

 nuclear, 28; chromophilic, 34; in general, 

 223. 



Gravity, effect on the egg, 96, 286, 319. 



Gregarines, mitosis, 67; polar body, 199. 



Ground-substance, of protoplasm, 19; of 

 nucleus, 25. 



Growth, and cell-division, 41, 278, 293, 312; 

 laws of, 292. 



Grylloialpa, reduction, 188. 



Hetej-ocope, tetrads, 190. 



Heterokinesis, 305. 



Histon, 243. 



Homreokinesis, 305. 



Hydrophilus, orientation of egg, 283. 



Id, 27; in reduction, 1S5; in inheritance, 



305- 

 Idant, 305. 



Idioblast, 22, 328. 



Idioplasm, theory of, 300 ; as chromatin, 



302; action of, 301, 327, 329. 

 Idiosome, 22. 

 Ilyanassa, partial development, 317. 



Infusoria, nuclei, 23, 165; mitosis, 62; con- 

 jugation, 164; reduction, 199. 



Inheritance, of acquired characters, 10, 329; 

 W'eismann's theory, 1 1 ; through the nu- 

 cleus, 5, 135, 248, 257, 262, 302, 327; and 

 metabolism, 326. 



Inotagmata, 22. 



Insect-eggs, 96, 283, 284. 



Interzonal fibres, 51, 74. 



Isopods, metamerism, 291. 



Isotropy, of the egg, 285, 287, 312, 315. 



Karyokinesis (see Mitosis), 46, 47. 

 Karyokinetic figure (see Mitotic figure), 50. 

 Karyoplasm, 15. 

 Karyosome, 24. 



Kinoplasm (archoplasm), in spermatozoids, 

 108, 126. 



Lanthanin, 27. 



Leucocytes, structure, 72; division, S3; cen- 

 trosome, 224, 227; attraction-sphere, 234. 



Leucoplasts, of plant-ovum, 98. 



Liliiini, mitosis, 59; spireme, 78; fertiliza- 

 tion, 160; reduction, 195-197. 



Liiuax, spiral asters, 57; germ-nuclei, 153. 



Linin, 24, 28; relations to cytoreticulum and 

 chromatin, 214, 223. 



Loctista, orientation of egg, 283. 



Loligo, cleavage, 273, 282, 283. 



jNIacrogamete, 167. 



]\Iacromeres, 273, 311, 313. 



Mammals, spermatozoa, 104; young ova, 

 119. 



Mantle-fibres, 52, 74. 



Maturation (see Reduction), 131 ; theoreti- 

 cal significance, 182; of parthenogenetic 

 eggs, 202; nucleus in, 259. 



MedusK, dwarf embryos, 309. 



Meristem, nuclei of, 246. 



Metamerism, 291. 



Metaphase, 47. 



Metaplasm, 15. 



Micella, 22, 301, 327. 



Microcentrum, 227. 



Microgamete, 167. 



Micromeres, 273, 311, 313. 



Micropyle, 90, 97. 



Microsomes, 21 ; of the egg-cytoplasm, 94; 

 nature of, 212, 228, 237; of the astral 

 systems, 213, 214; of the nucleus, 214, 

 223; relation to centrosome, 229; stain- 

 ing-reactions, 244. 



Microzyma, 22. 

 I Mid-body, 52, 56. 



