)20 



INDEX. 



Leaves, vernation of, 547. 

 Leek, 179, 685. 

 Leguminoseae, 199, 334, 337, 



626, 687. 

 Lemna, 13, 255. 

 ■ — trisulca, 619, 



619. 



Lemnaceae, 122. 



Length of roots, 13, 512, 513. 



Lenticels, 167. 



Lentil, 763. 



Leant odon taraxacum, 396. 



Lepidodendron, 741. 



Lephmium radicans, 522. 



Leucin, 349, 384. 



Leucophyll, 317. 



Levisticum officinale, 425. 



Levulose, 343. 



Libriform fibres, 139, 160. 



Liciiens, 90, 153, 178, 225, 



371, 380, 390, 391, 392, 



393, 514) 707.^ 



— assimilation of, 393. 



— forms of, 393. 



• — gonidia of, 391, 392. 

 392. 



— reproduction of, 727. 



— roots of, 34, 35, 263, 394. 



— symbiosis of, 390, 



— thallus of, 393. 



— tissues of, 153, 392. 

 fungi, 391. 



Life, 191, 395,717- 



Light, 397, 406, 485, 486, 

 489» 493, 494, 503, 508, 

 511, 513, 515, 517-519, 

 522, 524, 527, 528, 531, 

 714. 



— absorption of by chloro- 

 phyll, 322. 



— as affecting the develop- 

 ment of chlorophyll, 300. 



— and assimilation, 148, 282, 



294, 296, 299, 301, 304, 

 307, 309, 510,512. 



— bilaterality induced by, 



525. 



— cardinal points of, 302. 



— composition of, 302. 



— electric, and assimilation, 

 307, 



— infiuence on development 

 of organs, 522, 524, 525, 

 526, 527. 



— influence on development 

 of flat shoots, 709, 710. 



— Influence on growth, 554, 



555. 



on leaves and chloro- 

 phyll, 617-621, 623. 



on life of plants, 190, 



195, 197, 301, 593- 



on post - embryonic 



growth, 530, 536,537. 



Light, influence on struc- 

 ture of leaves, 536. 



on transpiration, 228, 



251. 



— intensity of, 302, 306. 



— irritability of plasmodia 

 towards, 615. 



ofprotoplasm towards, 



616, 617, 620, 621. 



— local action of, 310. 



— movements of leaves due 

 to, 625-630, 634-639. 



— refrangibility of, 301. 



— retardation of growth by, 

 535, 559, 561. 



— sources ot, 307. 



— as a stimulus, 594, 597, 

 601, 625-628, 638, 653, 

 692, 694, 698, 702, 705. 



— irritability of swarm- 

 spores to, 608, 610-612, 

 613, 621, 696, 714. 



— variations in intensity of, 

 541, 551, 552, 554, 556, 

 559, 560, 594, 613, 621, 

 623-643, 713. 



— of various colours, 303, 



305, 311, 638, 696, 697. 

 • — wave-lengths of, 306. 

 Lignification, 88, 90, 289, 



416, 423, 570. 

 Lignified elements, 161. 



— tissue, 231. 



— cell-walls, 242. 

 Lignin, 329, 389. 

 Lignite, 294, 382. 

 Liliaceae, 156, 169, 177, 419, 



424, 528, 534, 706, 780. 

 Lilium, 118. 



— candidum, 178, 400. 



— Mart agon, 178. 

 Lily, 51, 756. 



Lime, salts of, 79, 159, 254, 

 290, 320, 334. 



— in sap, 274, 280. 



— oxalate of, 291, 



— 466, 581, 714. 



— 445, 446, 482. 

 Linaria, 780. 

 Linum, 374. 



— grandi/olium, 640. 



— pe renne, 790. 



— usitatissimum, 546, 791. 

 Lithium, experiments with, 



235, 254, 269. 



— spectrum of, 236. 

 Lithocysts, 177. 

 Liverworts, 31, 66, 120, 



302, 474, 476, 479, 491, 

 495, 525, 621, 705, 706, 

 708. 



— growing-point of, 461. 



— reproduction of, 723, 724. 



— tissues of, 150. 



Loam, 259. 

 Loasaceae, 124, 669. 

 Lobeliaceae, 171, 780, 792. 

 Lobelia fulgens, 798. 

 Longitudinal axis, 482, 48 6. 



— sections, 447, 449, 481, 

 483, 563, 571- 



■ — walls, 452. 

 Lonicera, 186, 506. 



— caprijolium, 668. 

 Lophospermum, 659. 

 Loranthaceae, 64, 367, 766. 

 Loranthus Europxus, 368. 

 Luminous fungi, 406, 408, 



695. 

 Lupm, 326, 345. 

 Lupitiiu -varius, 333. 

 Lupulin, 185. 

 Luzula pilosa, 792. 

 Lychnis, 780. 



— diurna, 781. 

 — flos cuculi, 781. 



— "viscaria, 184. 

 Lycium, 320. 

 Lycopodiaceae, 52, 18 r, 474, 



800. 



— reproduction of, 741, 744, 

 745, 748. 



— shoots of, 55, 62. 

 Lycopodium, 75, 588. 



— chamxcyparissus, 1 1 2 . 1 46. 

 147. 



Lygodium, 60, 425, 492, 495, 

 675. 



Lysigenous intercellular spa- 

 ces, 176. 



Lysimachia, 183, 184. 



— nutnmularia, 483. 

 Lythrum Salicaria, 790. 



M. 



Macleya cordata, 571. 



Macrocystis, 419. 



Macrosporangia, 746, 751, 

 766. 



Macrospores, 746-752, 766, 

 800. 



Macrostylous flowers, 790. 



Macro-zoospores, 609. 



IMagnesia, 79, 334. 



Magnesite, 263. 



Magnesiun salts, 202, 226, 

 254, 262, 284, 287, 289, 

 290, 291, 383. 



Magnoliaceae, 180. 



Mahonia, 321, 395, 595. 



Maize, 12, 29, 193, 194, 217, 

 228, 229, 262, 263, 271, 

 278, 283, 284, 286, 288, 

 300, 309, 310, 313, 337, 

 344, 417, 424, 523, 564, 

 687. 



— 13, 38, 42, 271, 421. 

 Majanthemum bifoUum, 51. 



