454 



INDEX 



Tapetum, of Angiosperms, 360 

 (fig.), 361, 363 (fig.) ; of Ferns, 

 297, 299 (fig.). 



Tapioca, 43. 



Taraxacum, 154, 170, 372 ; flowers 

 of, Plate I (Frontispiece). 



Tartaric acid, 60. 



Taxus baccata, 128, 334 ; female 

 cones of, 346 (fig.) ; habit of, 

 335. 346 (fig.) ; leaf-structure 

 of, 34 T, 342 (fig.) ; male cones 

 of, 344. 345. 346 (fig.) ; ovules 

 of, 346 : seeds of, 346 (fig.), 

 351 ; stem of, 339. 



Taxus baccata, var. fastigiata, 380. 



Tea (Thea sinensis), 61, 63. 



Teak (Tectona grandis), 126, 130, 



Tearing, protection against, 93, 115. 



Tectona grandis, lib, 130. 



Teleutospores, 246 (fig.), 248. 



Tension, resistance to, 72, 88, 170. 



Terpenes, 62, 63. 



Terrestrial Algse, 190, 198, 204, 205, 

 208. 



Tertiary fossil-plants, 356. 



Testa, 352 (fig.), 370, 371 (fig.). 



Tetrads, of pollen grains, 361, 362 

 (fig.) ; of spores, 307 (iig.), 318 

 (fig.), 319, 348, 365, 372- 



Tetrahedral apical cells, 18 (fig.), 

 288, 297. 



Tetrarch roots, 66 (fig.), 69, 131 



(fi,?.). 

 Tetraspora, 190, 191 (fig.). 

 Tetrasporcs of Red Algse, 205 (fig.), 



228. 

 Textiles, 34, 103. 



Thalictrum, stem-structure of, 86. 

 Thallophyta, 180-268 (figs.), 307, 



406. See AlgEe and Fungi, 

 Thallus of, Algs, 180, 195-207 



(fi.gs.), 223 (fig.) ; Fungi, 230, 



231 ; Lichens, 258-61 (figs.) ; 



Liverworts, 269-73 (^gS-). 

 Tlieobroma cacao, 49. 

 Theobromine, 61. 

 Thermophilic Bacteria, 261. 

 Thickening of cell-walls, 29-37 



(fi.gs.) ; annular, 35 (fig.), 36 ; 



reticulate, 35 (fig.), 36, 74, 83 



(fig.), 120, 273 ; spiral. 35 



(fig.), 36, 37 (fig-). 74. 80 (fig.), 



83 (fig.), 120. 

 Thistle, 102. 

 Thornapple (Datura stramonium), 



61, 62 (fig.l, 384. 

 Thread-Bacteria, 268. 

 Thuidium, 276. 



Thuja, 347, 350 ; habit of, 336, 337 



(fig.). 



Tilia, secondary phloem of, 130 ; 

 secondary wood of, 28, 120, 

 127. 



Tiliacece, 103. 



Timber, 127-30 ; commercial 



sources of, 129, 130, 162, 334, 

 337 ; " Dry Rot " of (MenUius 

 lacrymans), 252. 



Tissues, I, 27, 65 ; epidermal, 91- 

 106 (fi,gs.) ; false, 239 : glan- 

 dular, 148. 149 ; ground, 65, 

 88, 107-11 ; mechanical, 31-6 

 (figs.) ; meristematic, 18, 117, 

 135 ; secondary, 120-42 (figs.) ; 

 secretory, 151-5 (figs.) ; storage, 

 88, 132 ; vascular, 67-70 

 (figs.), 78-86 (figs.), IT2, 113. 



Tissue-tensions, 12, 87. 



Tmesipteris, 407. 



Toadstools, 230, 245, 255, 407. 



Tobacco (Nicotiana tabacitm), 61, 

 265. 



Tolypothrix, 205, 206 (fig.). 



Tomato (Solanum Ivcopersicum), 



63. 

 Toothwort (Lathrcea), hydathodes 



of. 145 (fig-). 

 Tortula, 274 ; T. muralis, 269, 274 



(fig.). 

 Torus (of bordered pits), 36, 37, 



341 (fig.). 

 Toxic effect, of Bacteria, 265 ; 



of mineral salts, 14, 15. 

 Tracheidal cells (of Conifers), 341 



(fi,?.). 

 Tracheids, 37 (fig.), 179 ; of Conifers, 



37 (fig.). 1^7. 340. 341 (fig.). 

 344 ; of Ferns. 293 (fig.), 296, 

 298 (fig.) ; of foliage-leaves, 37 

 (fig.), 113. 146; of secondary 

 wood of Dicotyledons, 120, 

 121, 134. 

 Tradescantia, cell-structure of, 4, 5 



(fig.). 

 Tragopogon, root-structure of, 44, 



13^. 154. 155 (fig.). 

 Transfusion tissue, 342 (fig.) 343 



344 (fig.). 

 Transition from stem to root 89 



(fi.g-). 

 j Transitory starch, 6 (fig.), 40, 41, 



4- (Iig.). 40. 



Transmission of acquired charac- 

 ters, 380. 



Transpiration, 35, 158, 203 ; and 

 anthocyanins, 03 ; and hyda- 



