348 



INDEX 



Soil binders, 85. 



Soil, how water is lost from, 13. 



how made, 1. 



how mixed and laid down, 2. 

 Soil making, role of animals in, 8. 



role of plants in, 7. 

 Soil material, two sources of, 5. 

 Soil names, 4. 

 Soil requirements, of corn, 154. 



structure defined, 36. 



texture defined, 36. 

 Soil, what it is, 1. 

 Sorghums, characteristics of, 199. 

 Soy beans, 249. 



methods of culture, 271. 

 Spinach, how grown, 322. 

 Spores causing disease or decay, 

 126. 



how entrance is favored, 133. 



how spread, 127. 



how prevented from spreading, 

 128. 



summer, 130. 



winter, 130. 

 Spring defined, 17. 

 Squashes, how grown, 327. 

 Stacking grain, when advisable, 219. 

 Stamens defined, 108. 

 Starch, manufacture of, 89. 

 Starchiness defined, 156. 

 Stems, climbing, 99. 



erect, 99. 



forms of, 98. 



functions of, 98. 



prostrate, 98. 

 Stigma defined, 108. 

 Stomata defined, 93. 

 Strawberries, how grown, 291. 



pruning of, 303. 

 Structure of soil, crumb, 37. 



how affected by freezing, 37. 



how affected by humus, 38. 



of soil, puddled, 37. 



puddled, how caused, 37. 

 Style defined, 109. 

 Sulfur, 11. 

 Bunscald, injury by, 306. 



Temperature of soil, how governed, 

 30. 

 optimum for germination, 30, 68. 



Tile drains, effect on air space, 29. 



how water enters, 18. 



why used, 18. 

 Tillage, effect on air space, 28. 



why necessary, 36. 



when soil is wet, 39. 

 Timothy, advantages of, 228. 



time of cutting, 229. 



use of, 227. 



where grown, 227. 

 Tomatoes, how grown, 323. 

 Trampling soils when wet, 39. 

 Transpiration defined, 89. 

 Tree, how to tell age of, 102. 

 Tuber defined, 137. 

 Turnips, how grown, 322. 



Vegetables, cool season, 311. 



warm season, 312. 

 Vetches, methods of culture, 272. 



range of, 249. 

 Vitality of seeds, how determined, 60. 



Water, amount given off by leaves, 

 94. 



film, or capillary, 19. 



free, or gravity, 19. 

 Water-holding capacity, how af- 

 fected by humus, 15. 

 Water-holding capacity of differ- 

 ent soils, 16. 

 Water, how lost from soil, 13. 



hygroscopic, 19. 



travels how from root to leaf, 101. 

 Watermelons, how grown, 327. 

 Weed seeds, weights of, 265. 

 Weeds, when most easily destroyed, 



42. 

 Wheat, climatic conditions re- 

 quired, 205. 



harvesting of,.211. 



planting of, 210. 



seed bed for, 207. 



seed bed for, how prepared, 206. 



seed, desirable characters of, 208. 



selection of seed, 207. 



spring, 205. 



time of planting, 210. 



uses of, 212. 



why extensively grown, 203. 



winter, or fall, 205. 



Printed in the United States of America. 



