282 



Practical Plant Biology. 



Contractile vacuoles, mechanism of, 51, 



5 2 - 



where found, 52. 



Cork-cambium, 198. 

 Corolla, 230, 245. 

 Cortex, function of, 199. 

 Cotton-wool, fibres of, 10. 



use of, in bacteriology, 59. 

 Cotyledons, 176, 209, 239, 240. 



of Pinus, 209. 

 Ranunculus, 235. 



Scilla, 239, 240. 



Selaginella, 176. 



Cover-glass, i. 



cleaning of, 2, 3. 

 Cross, 262. 

 Cross-pollinate, 262. 

 Cross-pollination. Reciprocal, 262. 

 Crystalloids, 19, 20. 



solution of, n, 12. 

 Cystocarp, 119. 

 Cytase, 101. 



DARWIN, 270, 274, 277. 



Darwinism, 277. 



Death and reproduction, 126. 



Decay, 52, 125. 



Dehiscence of pollen-sacs, 200, 232, 246. 



Delafield's hoematoxylin, a stain for 



Mucor, 96. 

 Descent, theory of, Lecture XXX., 270- 



278. 

 Determinants (factors), 263. 



segregation of, 264, 278. 



uninfluenced by each other, 265. 

 Dextrose, a product of inversion, ^o, 34. 

 Diastase, 50, 101. 



Diaster, 253. 



Dicotyledons, 240, 244, 245. 



Diffusion of crystalloids, n, 12, 19, 20. 



Dioecious. See Unisexual. 



Diploid, 257. 



Dispersion of light by colloids, 20. 



Dispireme, 253. 



Dissemination of spores, 100, 132, 141, 



163, 200, 232, 246. 

 seeds, 209, 248. 

 Distribution and evolution, 273. 

 Disuse and atrophy, 277. 

 Division of labour, 85, 89, 107. 

 Dome of bordered pit, 193. 

 Dominance, 262. 



complete, 264. 



incomplete, 264. 

 Dominant character, 262. 



double, 266. 

 Double dominant, 266. 



recessive, 266. 



ELATERS of Marchantia, 131. 



Elodea canadensis, cell of leaf 43 (Fig. 9). 



chloroplasts of, 42, 43, 47. 

 cytoplasm of, 43, 48. 



evolution of oxygen by, 41 (Fig. 8). 



nucleolus of, 42, 47. 



nucleus of, 42, 47. 

 photosynthesis in, 41-47. 



streaming of protoplasm of, 48. 



vacuole of, 43, 47. 



Embryo, differentiation of, 250. 

 Embryo-sac (= Megaspore), 206. 



of Pinus, 206, 211. 



Ranunculus, 234. 



Scilla, 246. 



Emulsin in Penicillium, 101. 

 Emulsion, 26. 



Endarch, 187. 



Endodermis, 151, 155, 173, 182, 223, 242. 

 Endosperm ( = Female gametophyte), 

 206. 



of Pinus, 206, 207, 209, 210, 238, 248. 

 Endotryptase, 30. 



Energy, source of, for plants, 50. 



supplied by combustion, 31. 



ultimately solar, 51. 

 Enzymes, 28, 29, 30, 31, 33, 34. 

 Epidermis of leaf of Tradescantia vir- 



giniana, 4 (Fig. 2), 17. 

 Equatorial plate, 251, 253. 

 Evaporation, protection from, 124, 125. 

 Evolution. See Theory of Descent. 



Fj, F 2 and F 3 generations, 262. 

 Factors (determinants), 263. 

 Fermentation, 33. 

 Fibrous, layer of pollen-sac of 



Pinus, 200. 



Ranunculus, 232. 

 - Scilla, 246. 



Filament, 231. 

 Flowers, 230, 240, 245. 

 Foot, 140, 166, 176. 

 Fossil seed-plants, 211, 277. 

 Fossils, 171, 211, 276. 

 Fritillaria imperials, seeds of, for Mi- 

 tosis, 258. 

 Fruit, 236. 



syncarpous, 248. 

 Fucoxanthin, 105. 



Fucus platycarpiis. Lecture XIV., 104- 

 112 (Fig. 19). 



antheridia of, 108. 



chromatophores of, 105. 



conceptacles of, 107. 



cortex of, 104, 105. 



division of, labour in, 107. 



gametes of, 108. 



growth of, 106. 

 hairs of, 104, 106. 



