INDEX 



425 



Selaginella, 319, 320 (fig.), 

 321. 



Embryo sac, 357 (fig.), 364 (fig-). 

 367 (fig.), 372, 373 ; develop- 

 ment of, 365, 366 (fig.). 



Emetics, 61. 



Empetrum nigrum, leaf of, 163 (fig.). 



Empusa muscts, 231, 238. 



Emulsin, 48, 53. 



Encephalartos, 324 (fig.) ; E. hilden- 

 brandtii, 325 (fig.). 



Enchanter's Nightshade (Circcea 

 lutetiand], 58, 59 (fig.), 146, 

 168. 



Endemics, 393. 



Endodermis, 68, 69, 150 ; function 

 of, 69 ; of aquatics, 69, 171 

 (fig.), 173 (fig.), 174 (fig.) ; of 

 Ferns, 292 (fig.) ; of roots, 66 

 (fig.), 68, 69, 70 (fig.), 71, 75 

 (fig.) ; of Selaginella, 318. 



Endogenous, 71, 72. 



Endosperm, 327, 351, 384 ; food- 

 reserves of, 30 (fig.), 40, 44, 50, 

 51 (fig.), 52, 150 ; hybrid, 386 ; 

 of Angiosperms, 367, 368, 370, 

 371, 386 ; of Conifers, 351, 352 

 (fig.) ; of Cycads, 327. 



Endotrophic mycorrhiza, 72, 73 



(fig.)- 



Energy, liberation of, in fermenta- 

 tion, 257, 265, 266, 268. 



Environment, 374, 395 ; adapta- 

 tion to, 158-79, 203, 210, 236, 

 238, 321 ; influence of, 168, 

 169, 175-7. 374, 376, 377, 

 378, 379, 380. 



Enzymes, 53-7, 63 ; digestive, 52, 

 149, 150, 365 ; extraction of, 

 53, 54 ,' fermenting, 55, 256, 

 257 ; mode of action of, 55, 

 56, 256 ; of Fungi, 55, 230 ; 

 oxidising, 55, 155 ; proteoly- 

 tic, 52, 53, 54, T 49- 



Eosin, 43, 405 ; and sieve-plates, 

 82. 



Epacridaceae, geographical distri- 

 bution of, 393. 



Epidermis, 65, 91-106 (figs.), 158- 

 63 (figs.) ; functions of, 65, 

 77, 95 ; glandular, 148, 150 ; 

 modification of, 94, 95 ; of 

 anthers, 360 (fig.), 363 ; of 

 aquatics, 172, 176 (fig.), 177 ; 

 of leaf, i, 2 (fig.), 4, 90, 91-101 

 (figs.), 107, 108 (fig.), in (fig.), ! 

 115, 158-63 (figs.), 169, 295, | 

 298 (fig.), 341, 342 (fig.), 343, 



344 (fig.) ; of Moss-capsule, 

 285 (fig.), 286 ; of root, 66, 74 ; 

 of stem, 19 (fig.), 76, 77, 79, 

 81 (fig.), 83 (fig.), 93, 94 (fig.), 

 98, 136 (fig.), 137, 159 (fig.). 



Epigynous flowers, 355. 



Epilobium, 389 ; pollen of, 362 

 (fig.) ; E. hirsutum, 174. 



Epiphytes, 73, 272 (fig.), 309 ; 

 among Algae, 206. 



Epithelium, 151, 152 (fig.), 339 



(fig-)- 



Epithem, 146, 147 (fig.), 148. 

 Equimolecular solutions, n. 

 Equisetales, 289, 310-13 (figs.), 407. 

 Equisetum, 39, 180, 289, 310-13 



(figs.), 321 ; growing point of, 



18 (fig.). 

 Equisetum arvense, 311, 312 ; E. 



limosum, 311 (fig.) ; E. maxi- 

 mum, 1 8 (fig.), 313 (fig.) ; E. 



palustre, 311 (fig.). 

 Equivalent osmotic pressures of 



sea- water, 403. 

 Erect ovules, 358 (fig.). 

 Erepsin, 52. 

 Ergot (Claviceps purpurea), 49, 239, 



255 ; life-history of, 241 (fig.), 



242. 



Ericaceae, 178, 361, 363. 

 Eriodendron anfractuosum, 103. 

 Eriophorum, 178. 

 Eryngium maritimum, 93 ; petiole 



of, 113 (fig.). 

 Erysiphaceae, 230, 239, 252, 253, 



407 ; structure and life-history 



of, 242-4 (fig.). 

 Erysiphe graminis, 243 ; E. poly- 



goni, 243. 



Erythronium americanum, 371 (fig.). 

 Erythroxylon coca, 61. 

 Esters, 49. 

 Ethereal oils, 62, 63, 64, 105, 106, 



126, 151. 



Ethyl alcohol, 256. 

 Euastrum, 209 (fig.). 

 Eubasidii, 407. 

 Eucalyptus, 62 ; E. globulus, 129 ; 



E. marginata, 130. 

 Eudorina elegans, 188 (fig.), 192. 

 Eugenia caryophyllata, 62 ; secre- 

 tory cavities of, 151, 152 (fig.). 

 Euonymus, 139, 359. 

 Euphorbia, laticiferous cells of, 153, 



154 (fig.), 155: leaf of, no. 

 Euphorbia amygdaloides, no, 153. 

 Euphorbiaceae, 153, 157. 

 Eurotium, 242, 243 (fig.), 



