336 



Index 



Structure, conifer stems, 128 ; dicot bundle, 



121 ; dicot stems, 120; monocot bundle, 



126; monocot stem, 125. 

 Style, 200. 

 Subsidiary cells, 19. 

 Sugar, 28, 202; beet, 77, 79, 195; cane, 



77, 163, 219. 



Sugar cane, 77, 78, 141, 163, 231. 

 Sunflower, 10, 50, 97, 102, 198, 203, 222, 



228, 317. 

 Synthesis, of carbohydrates, 26, 27, 31 ; 



of fats, 31 ; of proteins. 32. 



Tamarack, 296. 



Tank epiphytes, 189. 



Tannic acid, 161. 



Temperature, 146. 



Tendrils, 107, 155. 



Test, for oil, 73 ; for proteins, 73 ; for 



starch, 26, 73 ; for sugar, 73. 

 Thallus, 272. 

 Thistle, 317. 

 Timothy, 220. 

 Tissues, 21 ; epidermal, 15, 16, 50, 119, 



169; food-conducting, 15, 121, 169; 



mechanical, 15, 122; storage, 125. 

 Toadstools, 268. 

 Tobacco, 89, 203, 224. 

 Tomato, 225. 

 Toxins, 253. 

 Tracheae, 121, 123. 

 Transfer of food, 76. 

 Transpiration, 49, 149 ; and absorption, 



176; and lifting of water, 134; and 



water balance, 52 ; rate of, 50. 

 Transplanting, 192; and roots, 190; and 



water balance, 55. 

 Tree-of-heaven, 107. 

 Trees, 94; size of, 99, 154. 

 Tropisms, 131. 

 Tubers, 97, 161. 

 Tulip, 1 60, 200; tree leaf, 13. 

 Turf, _ 1 59. 

 Turnips, 96, 194. 

 Turpentine, 161. 

 Typhoid fever, 253. 



Ulothrix, 236, 240. 

 Umbel, 198. 



Underground stems, 75, 97, 130, 159, 160, 



161. 

 Utilization of foods, 83. 



Vacuoles, 16, 49. 



Variations, 220, 222, 327; kinds of, 223. 



Vaucheria, 236. 



Vegetative multiplication, 217, 243, 279; 

 propagation, 218. 



Veins, 13, 20, 88; principal, 13. 



Vertical leaves, 41, 42. 



Vessels, food-conducting, 121 ; water-con- 

 ducting, 121, 123. 



Vinca, 14, 18, 21. 



Vinegar making, 261. 



Walnut, 79. 



Wandering Jew, 19. 



Water, balance, 52, 54; balance and plant 

 habitats, 56 ; balance and transplanting, 

 55 ; balance illustrated, 53 ; conducting 

 tissue, 1 8, 20, 105, 119, 121, 169; im- 

 portance of, 48, 51, 52; plants, 56, 57, 

 60, 156, 244, 273; storage, 58, 106, 158, 

 189; supply and crop yields, 51; why 

 necessary, 48. 



Water lily, 57; yellow, 159. 



Weeds, 229; and crop production, 230. 



Wheat, 5, 79, 96, 144; rust, 263. 



White clover, 44. 



White leaves, 66. 



White pine blister rust, 265. 



Willow, 16, 56, 163, 198. 



Wilt disease, 254. 



Wind, 148, 149; pollination, 103. 



Wintergreen oil, 163. 



Wood, 123; fibers, 124; gymnosperm, 

 294; pulp, 161. 



Xanthophyll, 63. 

 Xerophyte, 58, 59, 60, 157. 

 Xylem = water conducting and wood 

 tissues, 119. 



Yam, 194. 

 Yeast, 261. 

 Yucca, 58, 204, 213, 322. 



Zebrina, 19. 



