INDEX. 



805 



Apical-cell, 95,452,453» 454> 

 458, 473,545,747- 



— division of, 452, 455. 



— rarity of divisions in, 457. 



— significance of, 457. 



— tetrahedral, 447,456,743. 

 456. 



Apical cells, groups of, 458, 



462. 

 yipios tuberös a, 672. 

 Apocynaceae, 172. 

 Apogamy, 769,798, 800-802. 

 Apothecia, 707. 

 Apparatus for measuring 



growth, 556-558, 561, 



561. 



Apple, 141, 367, 369, 386, 



763,781. 

 Apples, fermentation of, 386. 

 Apposition, growth by, 413. 

 Aquatic plants, 225, 404, 



511, 564, 660. 

 Aquatic roots, 14, 23. 

 Aqueous vapour, 228, 248, 



264. 



— in wood, 268. 

 Arabis, 537. 

 Aral to, 123. 

 Araliaces, 181, 703. 

 Araucaris, 798. 

 Arbor vitx, 42. 

 Archegoniata, 721. 

 Archegonium, 465, 524, 525, 



732, 734, 736, 737, 738, 

 742, 744, 747-749, 754, 

 755, 760, 772-774, 788, 

 789. 



Arcyria incarnata, 83. 



Area of leaf-surface, 312, 



5ir, 513- 



— of wood cell-walls, 241. 

 Argemone mexicana, 175. 

 Arillus, 752, 

 Aristolochia, 220, 473, 548, 



669, 792, 793, 794. 



— Clematitis, 793. 

 --792. 



— sip ho, 244. 

 Aristolochiea', 180. 

 Armoracia, 802. 

 Aroidea", 125, 177, 179, i8r, 



279, 325, 406, 408, 473, 

 478, 497, 498, 704- 

 Aroids, 12, 114, 278, 461, 

 470,490, 545, 699. 



— roots of, 24, 693, 695. 

 Arrested leaves, 55, 61, 506, 



507. 

 Artichokes, 576, 651, 652. 

 Artificial cells, 215, 275. 



— cultures, 283, 286, 295. 

 — • selection, 329. 



Anon Italiciim, 406. 

 Asarwn, 51. 



Asarum Etiropn^um, 47. 



Ascending sap, 156, 225, 51 r. 



Ascent of water in root- 

 stock, 276. 



in stem, 225, 253, 264. 



in stem, velocity of, 



235. 



Asci, 726. 



Asciepiadex, 54, 171, 172, 



174, 789, 794- 

 Asclepins, 174. 



— carnosa, 669. 

 Ascoholus, 726, 727. 



— furfuraceus, 726. 

 Ascogenous hyphae, 726. 

 Ascomycetes, 391, 514, 726, 



727, 800. 

 Asexual reproductive organs, 

 724, 732, 740. 



— reproduction, 728, 770, 



798, 799, 802. 



— spores, 768, 769. 

 Ash-analyses, 287, 290, 320, 

 constituents, 79, 290, 



296, 313, 320, 355, 388, 

 509. 

 Ash-constituents of fungi, 

 383. 



— of parasites, 372. 

 Asparagin, 345, 355, 363- 



— as food for fungi, 384. 



— detection and reactions 

 of, 346. 



— disappearance in light, 



346. 



— importance of, 325. 



— metamorphoses of, 326, 



346. 



— occurrence of, 347. 

 Asparagineae, 55. 

 Asparagus, 61, 685. 



— asper, 543. 



— officinalis, 6r. 

 Aspects of vegetation, 702. 

 Asphalt, 294. 

 Asphyxia, 595. 

 Aspidium, 185, 471. 



— Filix-nias, 13, 40, 129, 



421, 478, 780. 



— Filix-mas, 129. 



— spinulosum, 51, 780. 

 Asplenium caudatinn, 478. 



— decussatum, 478. 

 478. 



— falcatum, 801. 

 — filix femina, 456. 



801. 



Assimilating cells, 24S. 



— chlorophyll - c(#puscles, 

 316. 



— surface, 227. 



— tissue, 148, 535. 

 Assimilation, 226, 250, 264, 



286, 289, 291, 293, 295, 



296, 308, 309, 324, 364, 

 366, 397, 411, 412, 508, 

 510, 521, 579. 

 Assimilation, apparatus for 

 showing, 304. 



— chemistry of, 297, 314, 



317. 



— curve of, 305. 



— energy of, 311. 



■ — equal volumes of gases 

 concerned in, 298. 



— experiments on, 310. 



— intermediate products of, 



317. 



— rate of, 304. 



— specific energy of, 312. 



— a local act, 310. 



— and chlorophyll, 299,509, 



— independent of growth, 

 300, 4ir, 412. 



— necessity of carbon diox- 

 ide in, 310. 



— quantityof starch formed, 



312-314. 



— and light, 198, 294, 296, 



299, 301, 307, 309, 535. 



— in coloured lights, 304. 



— in electric light, 307. 



— in intense light, 3 1 1. 



— in insectivorous plants, 



375- 



— in Lichens, 392, 393, 

 514. 



— products of, 299, 306, 



309, 314, 317, 318, 357, 

 403, 533, 763. 



— chemical metamorphoses 

 of products of, 323. 



Astragalus, 371. 



— tragacantba, 57. 

 Aiherurus ternatus, 478. 

 Atmosphere, composition o*", 



293. 

 Atmospheric carbon, 292, 

 294. 



— nitrogen, 291. 



— pressure, 269. 

 Atriplex, 640. 



— hortensis, 299. 

 Attachment of root-hairs 



to soil, 257, 259. 

 Attraction of sexual cells 



one to another, 737, 772- 



778. 

 Autumn-leaves, 318, 319. 

 wood, 162, 230, 268, 



578. 

 Auxanomctcr, 556, 557,558. 



— 557. 



Avoidance of self-fertilisa- 

 tion, 787, 790, 791, 794- 



797, 799- 

 Axial longitudinal section, 

 483. 



