INDEX 



293 



Reproduction, 7. 



means of, 8. 



sexual and nonsexual, 8. 



suppression of to stimulate 

 growth, 258. 

 Reserve food, 7. 



relation to flower-bud forma- 

 tion, 84. 



storage of, 56. 



use of, 56. 

 Resin washes, 161. 

 Resistance to disease, 182. 

 Rest period, 104. 



occurrence of, 105. 

 Restriction of food current, 56. 

 Reversion, 266. 

 Ring-budding, 229." 

 Ringing, 86, 249, 260. 



wood for cuttings, 207. 

 Ripening of fruits, 98. 

 Rodents, 152, 153. 

 Rootcap, 63. 



Root-cuttings, 208, (lab.), 284. 

 Root-eaters, 168. 

 Root-grafting, 220, 216. 

 Root-grafts, storage of, 221. 

 Root-hairs, 27, 64, (lab.), 280. 



gathering of food by, 65. 



lost in transplanting, 231. 

 Root-killing of trees, 117. 

 Root pruning, 67, 69, 249. 



for fruitfulness, 259. 



to form flower buds, 86. 

 Root tip, penetration of soil by, 



63. 

 Root tubercles (lab.), 281. 

 Roots, branching of, 67. 



depth in soil, 69, 70. 



destruction of by water, 129. 



growth of, 64, 70. 



horizontal extent of, 69. 



origin of, 58. 



parts of that absorb, 66. 



preparation for replanting, 237. 



pruning, 67, 69, 86, 249, 259. 



puddling in transplanting, 235. 



relation to food supply (lab.) 

 281. 



replanting of, 239. 



starting of, 27. 



starvation, 55. 



tubercles on (lab.), 281. 

 Rosin washes, 161. 

 Rotation of crops, 151. 

 "Running out" of varieties, 268. 



Sand, 203. 



Sap, elaborated, 54. 



flow in spring, 53. 

 Sap-sprouts, 132. 

 Sap-wood, 53. 

 "Saucer system " for green cuttings, 



211. 

 Scale insects, 172. 

 Science, 1. 



means of gaining, 2. 

 Scientific names, 11. 

 Scion, see Cion. 

 Scraping, 261. 

 Screens, 138. 

 Season for pruning, 249. 

 Seedcase, 16. 



bursting of, 26, 27. 



cracking, 22. 



in germination, 25. 

 Seeding, 97, 98. 

 Seedlings, for root-grafting, 220. 



growing of for variations, 269. 



parts of, 34. 



pricking off of, 68. 



vigorous, 30. 

 Seeds, absorption of water by, 14, 

 15, (lab.), 278. 



age of affects crop, 102. 



depth of planting, 30, (lab.), 279. 



effect of drying, 102. 



exhausting plant by, 96. 



hastening germination of, 21. 



immature, 99. 



means of propagation, 186. 



rules for planting, 187. 



selection, 268. 



size of, affects vigor of plants, 

 29, (lab.), 280. 



storage of, 101. 



stratification of, 103. 



study of, 276. 



surface planting of, 31. 



