INDEX 



459 



Teosinte, 166 



Tetanus, 26 



Thallophytes, 312 



Thistle, Canada, 328, 331, 334 



Thorns, 206, 235, 236 



Tissue, false, 77 



Tissues, of bean leaf, 139; of bean 



stem, 138; of fern stem, 98, 99; 



of Indian corn stem, 157; of pine 



leaf, 120; of pine stem, 114 1 18 

 Tobacco, 319, 320 

 Toxins, bacterial, 22, 24-27 

 Trailing stems, 196 

 Trees, 189; ages of, 224; forest, 



301 ; forms of, 190-192 ; size of, 



222-224 



Trunk of pine, 113-119 

 Tuberculosis, 22-24 

 Tuberous roots, 177 

 Tubers, 202, 334 

 Tumble weeds, 334 

 Turpentine, 133, 352, 356 

 Twig blight, 374 

 Typhoid fever, 25 



Ulmus americana, 191 

 Umbel, 265 



Vacuoles, 33, 34, 41, 55 

 Vallisneria spiralis, 266, 267 

 Vascular bundles, of bean, 138, 139, 



151, 152; of fern, 99-101; of 



Indian corn, 157; of pine, 115, 



116, 120, 121 

 Vaucheria, 48, 49 

 Vegetative multiplication, 171, 172, 



iQ7, 37 



Veins, 5, 101, 139, 158 

 Veneers, 357 

 Venus' fly-trap, 238 

 Vessels, 210-212 

 Vicia fabd, 155 



Vine family, 306 

 Violet family, 307 

 Virginia creeper, 205, 206 



Walnut family, 301 



Water current, 241, 242 



Water, evaporation from leaves, 

 241-245; influence on growth, 

 185 



Water ferns, 109 



Water hemlock, 337 



Wax, 244, 245 



Waxes, 322 



Weeds, 328-341 



Wheat, axillary buds, 218; durum, 

 68, 361; macaroni, 68; rusts, 

 60-68, 73; smut, 387 



Willow family, 301 



Willow, pussy, 189 ; vegetative mul- 

 tiplication of, 172 



Wilts, 376 



Wind pollination, 125, 148, 162, 267 



Witches' brooms, 72, 219 



Wolffia, 224 



Wood, 115-117, 121, 138, 207, 

 21 1 ; distillation, 356; durability, 

 208; fibers, 207; hardness, 208; 

 products, 356, 357; uses, 356; 

 weight, 208 



Yeasts, 33-38 



Yucca gloriosa, 273 



Yucca, pollination of, 273, 274 



Zamia, 135 



Zea Mays, 166, 167 



Zygote, of bean, 149; of bread 

 mold, 57, 58; of damping off 

 fungus, 378; of fern, 105; of 

 moss, 90; of pine, 127; of rust, 

 62, 63 ; of Spirogyra, 46, 47 



