498 



GLOSSAKIAL INDEX. 



Transverse planes, 382. 



Trees, age of, 139. 



Triclioblast (epi'f [gen. rpixos], hair; 

 fi\a.(TT6t, shoot), a name proposed by 

 Sachs for such idioblasts as are es- 

 pecially distinguished by size and 

 branching. 



Trichogyne, 440, 7t. 



Trichom'es («p.f, hair), 66, 68, 2f0. 



Triiiitrophenic acid. See Picric Acid. 



Triolein. See Olein. 



Tripalniatin. See Palmatin. 



Tristearin. See Stearin. 



Trommer's test for dextrin, 61. 



Trophoplast (Tpo(f)di, a feeder; irAio-o-io, I 

 form), 287. 



Tiillen. See Tyloses. 



Turgescence, effect of organic acids upon, 

 414. 



Turpentine (CioHi„), use of, in prepara- 

 tion of specimens for mounting, 23. 



Twining plants, 405. 



Tyloses (tvAos, a protuberance), 87. 



Typical cells. See Fundamental Cells. 



Unorganized FERaiEsxs, 366. 

 Utricularia, 346. 



Vacuoles, 26, 177, 200, 212. n., 280, 



375, 307. 

 Variegated plants, 477. 

 Varieties, 447. 

 Variety-hybrids, 456. 

 Vascular system. See Fibro-vascular 



System. 

 Vasculose, 36, n. 

 Vasif orm elements (ms, vessel ; forma, 



form), 81. 

 Vasiform wood-cells. See Tracheids. 

 Vegetable acids, 360. 

 Vegetable mucus, occurrence of, in 



plants, 358; test for, 15. 

 Vegetable parchment, 32, n. 

 Venation of leaves, 156. 

 Vesque's method of producing crystals, 



55. 

 Vessels, 55, 77, 82, 84; classified, 60; 



size of, 86. 

 Viola tricolor, coloring-matters in flowers 



of, 170. 

 Vitality of seeds, 205, 461. 

 Vitellin, 364. 



Wardian cases, 474. 



Water, absorbed previous to metasta- 



sis, 267; absorption of gases by, 300, 

 n. ; action of steam upon chlorophyll, 

 290, 475, n. ; an agent in the formation 

 of soils, 237 ; amount of, contained in 

 plants, 236 ; amount of, given off in 

 transpiration, 271 ; amount of, required 

 for germination, 462; direction in 

 ■which tissues most readily conduct, 

 262, n.; effect of absorption of, upon 

 seeds, 463 ; effect of, upon protoplas- 

 mic movements, 209; effect of, upon 

 opening and dosii'g of stomata, 270; 

 equilibrium of, in the plant, 258; ex- 

 udation of, from uninjured parts of 

 plants, 267 ; method of determining 

 amount of, in dry wood, 261 ; rate of 

 ascent of, in stems, 261, 263 ; relations 

 of, to tissues, 257 ; relative amount of 

 space occupied by, in fresh wood, 261; 

 transfer of, in plants, 257, 269 ; trans- 

 port of soils by, 238; use of, as a 

 medium, 5; use of, as a mounting- 

 medium, 21. See also Moisture. 



Water-culture, 248; directions for, 249; 

 first application of method of, 249 ; so- 

 lutions for, 250. 



Water-plants, size of, 188; structure of 

 land-plants compared with that of, 

 257. 



Water-pores, 73. 



Water tissue, 62, 280. 



Waxy coatings upon the epidermis, 66. 



White chlorophyll, 322. 



White lead as a v.irnish, 24. 



Wiesner's tests for lignin, 10, 14, 37. 



Wild plants, supply of nitrogen to, 334. 



Wilting of leaves, 471. 



Winterkilling, 472. 



Withering of stems, how prevented, 263. 



Wood, autumn, 138, 395; color of, 141; 

 density of, 144; identification of, by 

 histological features, 145, n. ; odor of, 

 142; preservation of, 142; spring, 138, 

 395; structural characters of , 146, n. 



Wood-cells, 57, 78, 82; size of, 86, ■«., 

 143. See also Tracheids. 



Wood elements, inclination of, to the 

 axes of trees, 143. 



Wood-fibre used for paper-pulp, 145. 



Wood-parenchyma, 77. 



Woodward's carmin, 17. 



Woody fibres, 57, SO. See also Wood- 

 cells. 



Woody rings, 114, 137; demarcation 

 between, 139 ; size of, 140 ; two, 

 formed in a single year, 139. 



Work of the plant, 185. 



