836 



INDEX. 



Water-nut, 351. 

 702. 



— of organisation, 79, 206. 

 plants, 126, 155, 203, 227, 



232, 253, 255, 287, 297, 

 511, 512. 

 absorption by, 247. 



— of respiration, 395, 400. 



— river-, 288. 



— sea-, 287, 288. 



— in soil, 257, 258, 259. 

 stomata, 119, 279. 



— in tendrils, 665. 



— theory of ascent of, 238, 



241. 



— transpiration of, 227, 246. 



— velocity of movements of, 

 236, 254. 



— well-, 288. 



— in wood, 239, 267, 269. 

 Wave-lengths of light, 306. 

 Wax, 117, 172, 246, 329. 

 Weeping of plants, 266, 279, 



— of root-stock, 270, 277. 

 Weight, dry- of seedlings, 



&c., 564, 567, 573. 



— lossot by respiration, 300, 



313, 327, 400, 403.- 

 of in germination, 400. 



— of wood, 240. 



— of yeast-cell, 384, 386. 

 Welavitschia mirabilis, 178. 

 178. 



Wheat, 262, 263, 334, 337, 

 339, 397, 687. 



— 20, 260, 261, 483, 688. 



— laying of, 289, 51 4. 



— Smut of, 381. 

 White Bryony, 658. 

 659, 663. 



— Mustard, 261, 711. 



— — 693. 



Whorl, 470, 483, 486, 495, 



500. 

 Wild vine, 658, 663. 

 Willow, 218, 505, 578, 784. 

 Winter-buds, 42, 43, 351, 



366, 464, 506, 507. 



Winter-leaves, 321. 



— -rest, 197. 



Witches'-brooms, 203, 537. 

 Wood, 131, 161, 218, 229, 



266, 312, 314, 320, 335, 

 359, 444, 482, 511, 574, 

 575, 579* 58f. 



— air in, 238, 267, 268. 



— aqueous vapour in, 268. 



— area of cell-walls of, 241. 



— autumnal, 230, 268, 578. 

 - — bleeding of, 266. 



cells, 238, 267, 274, 288, 



329, 439- 



suction of, 269, 



volume of, 239. 



— composition of, 290. 



• — conductibility of, 243, 



— desiccation of, 242. 



- — -destroyingfungi, 344,381, 

 387. 



— destruction of by fungi, 

 388. 



fibres, 160, 578. 



— filtration through, 237. 



— 1 unctions of, 163, 231. 



— heart-, 230, 268. 



— imbibition of, 241, 268. 



— molecular structure of, 

 242. 



— porosity of, 238. 



- — properties of, 234, 243, 

 264. 



skeletons, 159. 



■ — specific gravity of, 240. 



— spring, 230, 268, 578. 



— structure of, 237, 439. 



— tension of air in, 267, 268, 



269, 270. 



— tensions and pressures in, 

 574-580. 



— tissues of, 158. 



— -vessels, 160. 



— water in, 239, 241, 267, 

 269. 



■ sorrel, 329,620, 625, 638, 



644, 649, 656. 

 JVoodivardia radicans, 478. 



Woolly hairs, 124, 

 Work done by growing- 

 plants, 583. 



X. 



Xylem, 131, 157, 230. 



— general characters, 133. 



parenchyma, 160. 



rays, 159. 



— of roots, 168. 

 Xylogen, 88, 389. 



Yeast, I, 76, 324, 343, 347, 

 369, 383, 384, 385, 387. 



— -cell, weight and volume 

 of, 384, 386. 



— cultivation of, 384. 



fungi, 349, 385. 



Yellow autumn leaves, 319. 



— bacteria, 386. 



— fruits, 320. 



— light, 303, 311, 638, 696, 

 697. 



— wood, 163. 

 Yew, 237, 751, 756. 

 Yucca, 169, 528, 571. 



— gloriosa, 529. 



Z. 



Zea Mays, 118, 130, 236, 283. 

 38, 42, 79, 91, 111, 



132, 141, 145, 232, 338, 



421, 469. 



Zinc in soil and plants, 288. 

 Zones of growth, 541, 544, 



685. 

 Zoosperm, 724, 730, 768- 



771, 780, 788. 

 Zoo-spores, 82, 604. 



— movements of, 604-608. 

 Zygomycetes, 726. 

 Zygospore, 351, 725, 726, 767, 



800. 

 Zygote, 725-729, 767, 800. 



