456 



INDEX 



Carbohydrate, 32, 35. 



Carbon dioxide, 32, 303. 



Carnation, 404, 405. 



Carnivorous plants, 218. 



Carpel, 120, 137. 



Carrot, 376. 



Catalpa, seed of, 171. 



Celery, 382. 



Cell, 9. 



Cellulose, 9. 



Cell-wall, 9. 



Cereals, 342. 



Chemistry of soil, 308. 



Cherry, 394. 



Chlorophycese, 31. 



Chlorophyll, 10, 33. 



Chloroplast, 10, 33. 



Chrysanthemum, 407. 



Cladophora, 16. 



Classification, 3. 



Climbers, 233. 



Clinging roots, 268. 



Clover, 363, 364. 



Club-mosses, 88, 91, 95, 101, 



108. 



Cocklebur, 174. 

 Coleochsete, 15. 

 Colony, 12. 

 Compass plants, 211. 



Conifers, 116. 



Cork cambium, 240. 



Corn, 137, 343, 344, 347, 348 

 349, 350 ; germination of, 182 

 section of a grain of, 318 ; selec- 

 tion, 347 ; tester, 348. 



Corn-breeding, 337. 



Corn-production, map showing 

 , states of greatest, 343. 



Corolla, 131. 



Cortex, 236. 



Cotton, 411, 412. 



Cotton-production, map showin; 

 states of greatest, 414. 



Cotyledons, 126 ; escape of, 181 



Cow-pea, 365. 



Cross-pollination, 158. 



Crown gall, 444. 



Cryptogams, 98. 

 Cucumber, 384. 

 Cultivated plants, 296. 

 Currant, 400; black knot on, 

 446 ; spot disease of, leaf, 436. 

 Cuticle, 205. 

 buttings, 326, 327. 



iyanophycese, 31. 

 Cycads, 117. 

 Cyclic leaves, 229. 



iytoplasm, 10. 



Daffodil, 408. 



Dahlia, 254. 



Daisy, crown gall on, 445. 



Dandelion, fruit of, 169; root 



of, 253. 

 Darlingtonia, 219. 

 Deadnettle, 133. 

 Deciduous forest, 286, 287. 

 Deciduous habit, 214. 

 Department of Agriculture, 333. 

 Dicotyledons, 146. 

 Digestion, 38, 176. 

 Dionsea, 222. 

 Diseases, 4, 41, 432 ; control of, 



448. 



Disease-resistance, 335. 

 Dogtooth violet, 153. 

 Dormancy, 11. 

 Dorsi ventral, 69. 

 Dotted vessels, 238. 

 Dros.era, 220, 221. 

 Drought, 294. 

 Drought-resistance, 336. 

 Dunes, 282, 283. 



E 



Ectocarpus, 21, 26. 



Egg, 25. 



Elm, 228. 



Embryo, 318; of Angiosperms, 



145 ; of Gymnosperms, 126. 

 Embryo-sac, 142. 

 Endosperm, 318; of Angio- 



