8ia 



INDEX. 



Discontinuous variations in 



growth, 551, 552- 

 Disease, 285, 289, 294, 301, 



531. 547- 



resisting Vines, 786. 



Disintegration of rocks, 264. 



Disorganisation of chloro- 

 phyll, 319. 



Displacements of cell-walls 

 during growth, 445. 



• — of leaves, 462. 



Disproportionality between 

 stimulus and effect, 589, 



595, 597, 598. 

 Distilled water, germination 



in, 284. 

 Distribution of growth, 411, 



415, 437, 438, 544, 569, 



683-685. 



— of latfciferous vessels, 173. 

 X— of resin- passages, 181. 



— of water in wood, 241. 

 Diurnal position of leaves, 



&c., 625-630, 634, 635, 

 636, 638, 646. 



Divergences, 499, 500. 



Dividing cells, form and vo- 

 lume of, 434. 



Division of cells, 94, 97, loi, 

 105, 107. 



laws of, 433, 434, 435. 



— of chlorophyll-corpuscles, 



318. 



— of nucleus, 102-105. 



— ofpollenmother-cells,433, 



434. 

 Dock, 186. 

 Dodder, 675. 

 Dolomite, 263. 

 Dormant buds, 475. 



— condition of organs, 320, 

 411,414. 



— periods, 341, 350, 534. 

 - — protoplasm, 402. 

 Dorsi-ventral and radial or- 

 gans contrasted, 705. 



— organs, rolled up, 706,707, 

 .709. 



— shoot-axes, 455, 485, 713. 



— structure, 485, 489, 490, 

 491, 492, 493, 494, 496, 

 499, 502, 524-527, 625, 

 698, 704, 709. 



494. 



Double flowers, 783. 

 Draba verna, 791. 

 Dracsena, 51, 62, 130, 144, 



169, 230,528,571. 

 — 170, 231. 

 Drainage, 256. 

 - — water, 259. 

 Draper's curve, 305. 

 Drooping, 215, 228, 233,244, 



254, 258, 264, 567. 



Drosera, 124, 378, 655. 



— rotundifolia, ITJ. 

 Droieracess, 376. 

 Drought, rigor due to, 595. 

 Duckweed, 122, 619. 

 Duramen, 163. 

 Dwarf-males, 775. 



E. 



Echinocactus, 54, 472, 780. 

 Effects of fertilisation, 768. 



— of injury, 504, 507. 

 Elsiagnus, 124. 



Elasticity of cell-walls, 5 66- 

 568. 



— of stems, 234, 589, 599. 



— of tissues, 219. 

 Elaters, 741. 

 Elder, 77. 

 Electric-currents in Dionsea, 



&c., 650. 



light and assimilation, 307. 



Electricity as a stimulus, 617, 



654. 



— effect of on plants, 190, 

 201, 601. 



— rigor due to, 596. 

 Elements composing plants, 



290. 

 Elimination of geotropism, 

 683, 694, 705, 716. 



— of heliotropism, 705. 

 Elm, 165, 489, 714. 

 Elodea, 297, 311. 

 Elongation of cylinders of 



pith, 572, 573. 



— of organs, 414, 417, 419, 

 420, 422, 424, 440, 461, 



539, 563, 570. 



Embryo, 332, 344, 373, 414, 

 435, 443, 472, 484, 538, 

 563, 737, 742, 743, 744, 

 747, 748, 750, 753-756, 

 760-766, 767, 800. 



sac, 465, 750-752, 754, 



755, 760, 763-766, 800. 



nucleus of, 762. 



Embryology of Angiosperms, 

 764, 765. 



— of Equisetaceae, 743. 



— of Ferns, 744. 



— of Gymnosperms, 751, 

 754-756. 



— of Mosses, 737-739. 



-. — of Vascular Cryptogams, 



747-750. 



Embryonic condition, 411, 

 414, 420, 424, 437, 439, 

 461, 539, 544, 563. 



— . growth, 419. 



— substance, 447, 480. 



— continuity of, 417,502, 



767, 769, 770. 



Embryonic tissue, 112, 4151 

 417-419, 422, 423, 431, 

 440, 445, 461, 466, 467, 

 473, 477, 479, 480, 482, 

 502, 765, 770. 



Embryos, adventitious, 802, 



— of parasites, 765, 766. 

 Emptying of leaves in 



autumn, 319. 



— of sieve-tubes, 361. 

 Empusa Muicse, 381. 

 Emulsifying ferments, 343, 



347- 

 Emulsin, 342, 349, 

 Emulsion-figures, 609, 610. 



610. 



Emulsions, 175, 179, 1S2. 

 Endodermis, 143, 169, 358. 

 Endogenous buds, 476. 

 Endophytic parasites, 371. 

 Endosmose, 211, 225, 243, 



250, 253, 275, 280, 363, 



565, 566, 573. 

 Endosperm, 332, 335, 343, 



366, 373, 390, 538, 750; 

 • 752-756, 762, 763, 800. 

 Energy of assimilation, 311, 



312. 



— of fermentation, 386. 



— of irritable organs, 601. 



— of nerves, 600. . 



— of respiration, 396, 397. 



— stored and freed by the 

 plant, 199, 295, 403. 



Enfeeblement of sexuality; 



783. 

 Environment of the plant, 

 189,515,593,594,678.- 



— influence of on growth, 



552, 554, 555. 



on origin of growing- 

 points, 516, 523. 



on post - embryonic 



growth, 516, 537. 



Epicotyl, 712. 



Epidermal glands, 175, 183, 

 185, 378. 



— hairs, 44, 48, 122. 



— secretions, 184. 



— tissue, no, 113, 171. 

 Epidermis, 45, 115, 159, 166, 



216, 226, 246, 288, 329, 

 416, 420, 423, 470, 479, 

 . 631,633, 634,645,739. 



— of leaves, 47, 97. 



— of moss, 149. 



— tensions of, 569-572, 574, 

 582. 



Epilobium, 792. 

 Epipactis latifolia, 796. 

 Epipogon, 62, 63, 372, 374. 

 Epithelium, 182. 

 Equilibrium of diffusion, 363, 



— unstable, 591, 592, 597- 



