638 



INDEX 



Sterilization, progressive, 432 



Stigma, 437 



Stimulus and response, 125 



Stock, 335 



Stolons, 164, 349, 350 



Stoma, 33, 3S 



Storaata and gaseous exchange, 108 



Strata, classification of rock, 583 



Stratification, 582 



Strawberries, 348 



Strobilus, 371 



Struggle for existence, 190, 513, 515 



Style, 437 



Sugar-beet, 68 



Sugar-cane, 68 



Sugar-maple, 336 



Suminski, Count Lesczyc, 168 



Sundew, 87, 88, 347 



Sunlight, importance of, 75 



Survival of the fittest, rgi, 515 



Suspensor, 380 



Sweet clover, yellow, 82 



Sweet pea, 470 



Symbionts, 318 



Symbiosis, 214, 321, 3,24, 325 



social, 325 

 Symmetry, bilateral, 167 

 Sympetalae, 456, 473 

 Symplocarpus foetidus, 496, 499, 



500 

 Synangia, 601 

 Synergids, 440 



Tap root, 10 

 Taraxacum, 486 

 Taxonomy, 4 



Tectoria cicutaria, 161, 163 

 Tetrad, 158 



Tetrad-divisions, 158, 187 

 Tetraphis, 207 



Thallophytcs, 366 



Thallus, r67 



Thecium, 330, 331 



Thyme, 479 



Thyrsopteris elegans, 157 



Tillandsia, 326 



Tissue- tension, 117 



Toadflax, 48r, 482, 483, 484, 485 



Toadstool, 288 



Tobacco, 480 



Todea barbara, 157 



Tomato, 335, 450, 480 



Torus, 464 



Tour, Cagniard de la, g8 



Toxins, 313 



Trachymyrmex obscurior, 326 



Transpiration, advantages of, 40 



control of, 38 



cuticular, 38 



lifting power of, 42 



stomatal, 38 

 Tree ferns, 150 

 Tree, genealogical, 577 

 Trifolium hybridum, 469 

 Triticum, 298 



vulgare, 494 V 



TroUius, 462 



Tropseolum majus, 137, 143 

 Trunk, 4r2 



excurrent, 413 



deliquescent, 414 

 Trypsin, 102 

 Tube-cell, 423 

 Tubers, 217 

 Tubuliflorae, 488 

 Tulip bulb, 29 

 Tulip-tree, 29, 74 

 Turgor, 58, 114 

 Turpin, 98 

 Tyndall, 89 

 Type genus, 491 

 TyphaceiE, 491 



