Fertilisation of Algae, 284. 



of Ascaris megalocephala, 259. 



of Botrydium, 285. 



of Oiliata, 265. 



of Cutleriacese, 286. 



of Desmidiacese, 279. 



of Echinoderm eggs, 256. 



of Fucaceae, 286. 



of Infusoria, 265. 



of Monjeotise, 283. 



of Noctilucse, 278. 



of non-nucleated portions of proto- 

 plasm, 299. 



of Phanerogams (Liliummartagon), 

 283. 



of Phaeosporeae. 286. 



of Spirogyra, 283. 



of Vorticella, 281. 



of Volvocineae. 290. 



of Zygnemaceae, 281. 



oogamous, 284. 



phenomena of, 289. 

 Filament theory (Flemming), 23. 

 Filamentous substance, 23. 

 Ferments, 128, 150. 



action of, 151. 

 Flagella, 77. 

 Foam theory of protoplasm (Biitschli), 



20. 



Foam, structure of, 21. 

 Formative instinct (Blum en bach). 338. 

 Formative activity of the cell, 145. 

 Framework theory of protoplasm, 19. 

 Fritillaria imperialis, nuclear division in 



the embryo-sac of, 196. 

 Fritillaria persica, nuclear division in 



pollen grain of. 198. 

 Fucacese, fertilisation of, 286. 

 Fucus, analysis of the ash of, 136. 



Galvanotropism, 92, 108. 

 Gametangium, 284. 

 Gametes, 284, 293. 

 Gas chamber, 112. 

 Gemmulae (Darwin), 340. 

 Generation cycle, 252, 297. 



theories of, 339. 

 Geotropism, 92. 

 Germinal nucleus, 259. 

 Germinal spot, 50. 



of Asteracanthion, 53. 



of Molluscs, 51, 52. 

 Germinal vesicle, 49. 

 Giant cells of bone marrow, 24i. 

 Gliding movements of protoplasm, 70. 

 Goblet cells, 36. 

 Granula, 24, 25, 44. 



theory (Altmann), 24. 

 Granular plasm, 15, 68. 

 Granule and mass theory (Arnold and 



Purkinje), 8. 



Granules, streaming movements of, 68. 

 Gravity, effect of upon egg-cell division, 



214. 

 Gromia oviformis, 29. 



movements of, 69. 



EX 365 



Growing point, arrangement of cells in, 



221. 



heaping up of protoplasm at, 323. 

 Guanin crystals, 158. 



Heat production, a vital process, 130. 

 Heat rigor, 94. 

 Heliotropism, 92. 

 Hereditary mass, 339. 



combination of, 353. 



distribution of, in the cell, 346. 



division of, 352. 



equivalence of male and female, 345. 



prevention of the summation of, 350. 

 Heredity, theories of, 334. 

 Hermaphroditism of the nucleus, 275. 

 History of the cell-theory, 2. 

 History of the protoplasmic theory, 6. 

 Honeycomb theory of protoplasm "(Biit- 

 schli), 20. 

 Hyaloplasm, 15. 

 Hybrids, 313. 

 Hybridisation, 310. 

 Hydrocharis, 71. 

 Hydrodictyon, 294. 

 Hydrotropism, ll/. 



Idioblasts, 340. 



arrangement of, 344. 



division of, 341. 



size and number of, 342. 

 Idioplasm, 339, 342, 357. 

 Infusoria, fertilisation of, 265. 



galvanotropism of, 108. 



need for fertilisation of, 292. 

 Intercellular substance, 173. 

 Interfilamentous substance, 23. 

 Intergranula substance, 24. 

 Internal vesicle of Thalassicola, 212. 

 Inlracellular digestion, 142. 



pangenesis, 359. 

 Intramolecular heat, 127- 



respiration, 131. 

 Intraplasmic products, 27- 

 Intussusception, 169. 

 Invertin, 150. 

 Irritability of the cell, 91. 



of protoplasm, 91. 

 Isogamous fertilisation, 285. 

 Isotropy of protoplasm, 354. 



Karyokinesis, 179. 

 Karyolisis, 199. 



Latent properties, 334. 



Leucocytes, absorption and digestion of 



foreign bodies by, 143. 

 chemotropism of, 121. 



Leucophrys patula, 253, 292. 



Leucoplasts, 160. 



Life-cycle in animals and plants, 148. 



Light, action of, upon ^Ethalium, Pelo- 

 myxa, chromatophores, and pig- 

 ment cells of retina, 99. 

 action of upon Eugleua and swarm- 

 spores, 100. 



