INDEX 



Abscission, 67. 



Absorption, 170; and rise of sap, 135, 176; 



and transpiration, 176. 

 Accumulation, of food, 74, 75, 77, 105, 125, 



I5Q. 179; of water, 58, 106, 158. 

 Aconite, 195. 



Acre, food products from an, ,34. 

 Advantages, of deciduous hai)it, 63 ; of 



horizontal stems, 104; of spreading 



roots, 169; of upright stems, 102. 

 Aerial roots, 189. 

 Agar, 246. 



Agave, 58, 90, 91, 97- 

 Agriculture, 4, 99 ; and food accumulation, 



78. 

 Alcohol, 261. 

 Alder, 198, 201. 

 Alfalfa, 194. 

 Alga;, 234 ; blue-green, 245 ; brown and 



red, 246 ; living conditions of, 239 ; 



reproduction among, 243 ; structure of, 



234- 

 Alligator pear, 212. 

 Amanita, 267. 

 Amaryllis, i6i. 

 Angiosperms, 211, 303; divisions of, 304; 



seeds of, 211. 

 Animals, 149. 231. 



Annual growth, 129; rings, 123, 129. 

 Annuals, 94. 

 Anther, 200. 

 Anthocyan, 65. 

 Antitoxins, 253. 

 Apple, 76, 79; May, 98. 

 Artichoke, 214; Jerusalem, 97, 161, 163. 

 Arts, plant-producing, 99. 

 Asparagus, 163. 

 Assimilation, 82, 85. 

 Autophytes, 249. 

 Autumn coloration, 65. 

 Avens leaf, 15. 

 Avocado, 212. 

 Axil, 106. 



Bacteria, 2, 250; and disease, 253; and 



legumes, 194, 258; and sanitation, 252; 



and soils, 257; and soil nitrogen, 258; 



in the dairy, 256. 

 Bamboo, 164; leaf, 14; stem, 124, 130, 



303. 

 Banana, 79, 97, 219. 

 Bark, 129, 170. 

 Bast, 119; fibers, 123. 

 Bean, 43, 207, 223; soy, 3,^, 78. 

 Beech, 194. 

 Beets, 96, 194. 

 Begonia leaf, 14. 



Benedicts solution, 73. 



Bermuda grass, 159. 



Biennials, 94, 95, 9(i- 



Black locust, 198. 



Blade, 13, 14; position and light, 41. 



Bloom, 54. 



Blue-green algx, 245. 



Boston fern, 226; ivy, 182, 189. 



Botany, 3, 4; subdivisions, 151. 



Bread making, 261. 



Breeding, plant, 220. 



Bromelias, 189, 191. 



Brown c<jlor of leaves, 66. 



Bryophyllum, 218. 



Buckeye leaf, 15; twig, 107. 



Buds, 106; and plant form, 109; kinds of, 



109, 160; opening of, 108; scars, 107, 



113, 114- 

 Budding, 132. 

 Bulbs, 97, 160, 219. 

 Bulrushes, 157. 



Bundle, dicot, 121 ; monocot, 126. 

 Bundles, leaf, 20; root, 169; stem, 120, 



121, 125, 126, 128. 

 Burdock, 102. 



Cal)l)age, 96, 225. 



Cactus, 56, 158, 190; spineless, 6. 



Caladium, 160, 219. 



Calorie, 34. 



Calyx, 200. 



Cambium, 119, 124; and grafting, 132. 



Camphor, 163. 



Canna, 219. 



Capsule, 212. 



Carbohydrates, 27, 135. 



Carboniferous plants, 283. 



Carotin, 63. 



Carrot, 96, 186, 198; family, 315; wild, 



316. 

 Castor bean, 207. 

 Catkin, 198.. 

 Cat-tail, 157, iqS. 

 Cauliflower, 214, 225. 

 Celandine leaf, 15. 

 Celeriac, 194. 

 Cells, 15, 16, 21; guard, 18; tissues and 



organs, 21, 178. 

 Cell sap, 16. 

 Cellulose, 16, 86, 100. 

 Cell walls, 16, 276; making of, 86. 

 Century plant, 58, 76, 96, 97. 

 Cereus, 58. 

 Chlorophyll, 22, 63. 

 Chloroplasts, 22. 

 Cion, 132. 

 Cladonia, 269. 



331 



