3(58 THE CELL 



Reproduction of the cell, 177- 



theories of, 339. 

 Reserve materials, 26, 35, 150. 

 Respiration of the cell, 128. 



intramolecular, 131. 

 Restitution theory, 276. 

 Retarded eggs, 296. 

 Reticularia, 28. 



movements in, 69. 

 Rheotropism of Myxornycetes, 68. 

 Rotation in protoplasm, 71. 

 Rotatoria, 296. 



Saccharomyces cerevisiae, effectof chloro- 

 form upon, 114. 

 Salamandra maculata, nuclear division 



of, 1?3. 



Sarcode, 7, 29. 

 Segmentation of the egg, 223-232. 



equal, 224. 



meroblastic or partial, 230. 



unequal, 225. 



Selective powers of the cell, 135. 

 Self-fertilisation, 299. 

 Separation bodies (Flemming), 189. 

 Sexual affinity, 300. 



characters, 276. 



dimorphism in Vorticella, 272. 



generation, fundamental modes of, 

 278. 



maturity in Ciliata, 292, 293. 



nuclei, 266. 



swarm-spores, 284. 

 Skeleton of the cell, 159. 

 Somatoplasm, 349. 

 Specific energy, 92. 

 Sperm centrum, 258, 274. 



nucleus, 199, 243, 257. 



nucleus in non-uucleated fragments 

 of egg-cells, 300. 



spindle, 244. 

 Spermatozoon, of Ascaris, 46. 



movements of, 82. 



narcosis of, 114, 147, 160. 



of Echinoderms, 257- 



structure of, 45. 

 Spindle aggregations, 245. 



fibrils, 181, 202. 

 Spirogyra, 283. 

 Sporangium, 234, 284. 

 Staphylococcus, 122. 

 Starch formation, 132. 



formation in plant cells, 160, 163. 



granules, 162. 



Stationary nuclei of Infusoria, 269. 

 Stimulation, phenomena of, 91, 93. 



after-effects of, 94. 

 Stimuli, chemical, 111. 



electrical, 106. 



kinds of, 92. 



light, 99. 



Stimuli, mechanical. 110. 



protoplasmic, 91. 



thermal, 94. 

 Streaming movements of oil drops, /3 



Stylonichia, 253, 292. 



Suberin, 168. 



Summer eggs, 296. 



Swarm-spores, action of light upon, 



100. 



formation of, 234. 

 passing out from cell membrane of, 



6,34. 

 sexual and asexual, 284. 



Telolecithal eggs, 232. 

 Temperature, effect of, upon cell, 94. 



maximum, mimimum, 94, 97- 

 Tension (potential energy), 126. 

 Tet raster, 243. 

 Thermal stimuli, 94, 239. 

 Tradescantia, 72, 94, 106. 

 Transverse division plane, 220. 

 Trianea bogotensis, 71- 

 Triaster, 243. 

 Trophoplasm, 357- 

 Trophoplasts, 159. 



division of, 160. 



Tuberculin, mode of action of, 123. 

 Turgor (turgescence), 141, 155.' 



Ulothrix, 101. 



Vacuoles, 31,34, 154. 



contractile, 85. 

 Vallisneria, 71, 194. 

 Vaucheria, repair of, after injury, 323. 

 Vegetative reproduction, 255. 

 Vessels in plants, 2. 

 Vital elementary units, 1. 



force, 91. 



properties of the cell, 65, 126. 



processes, 128. 

 Vitalism, theory of, 91. 

 Vitelline membrane, 257- 

 Volvocinese, 287. 

 Volvox globator, 290. 

 Vorticellae, 271, 302. 



Winter eggs, 296. 



WooJy change of cell-wall, 1C8. 



Xanthophyll, 132. 



Yolk, 158. 



granules, 158. 

 nuclei, 233. 



Zooglea, 24. 



Zygnemaceae, fertilisation of, 281. 



Zygote, 279, 281, 283. 



Butler & Tanner, The Selwood Printing Works, Frome, and London. 



