320 INDEX. 



Soil, after packing and harrowing, 63; as packer leaves it, 60; as the plow leaves 

 it, 46; cultivation of, 137; shallow vs. deep cultivation, 138; time of, 140; 

 fertility, XII, 99, 52; a condition of, 100; saving, 101; experts changing views 

 on, 102; what it is, 104; elements of fertility, 105; physical condition of, 91, 

 49, 186, 239; time to work, 94; perfect conditions, 96; preparing for potatoes, 

 199; summer treatment of, 177, 189; surface harrowed, 47; water stored in for 

 irrigation, 236; blowing of, 178; of semi-arid region, 130; conditions, 143; time 

 of cultivation, 144. 



Soil Mulch or dust blanket, XXIX, 247; before rain, 248; after rain, 249. 



Soil culture, correspondence course in, 311; domain of, 276; where developed, 276; 

 results, 277; increase of products under, 259. 



Sorghum by thorough cultivation, 257. 



Specialty in farming, 19. 



Spring, early disking in, 177; early work, 84; plowing old land, 45; treatment of 

 soil, 177, 189. 



Spring wheat, harrowing, 186; growing, 176. 



Stooling of grain, XXXIII, 266; cause of, 267; explained, 180. 



Sub- irrigation, 238. 



Sub-surface packing, IX, 58; packer illustrated, 64; mission of the packer, 59; soil 

 as packer leaves it, 60; rolling vs. sub-surface packing, 63; roots in firm soil, 

 65; making seed bed, 66; ideal condition of soil, 69; effect of packer, 73. 



Sugar beet growing, XXIV, 218; thinning beets, 218; forty-acre field, 219; under 

 irrigation, 220, modern factory, 221; by Campbell method, 223; without irri- 

 gation, 224. 



Summer culture, X, 75; experiments in rotation, 77; results of tilling, 79; how done, 

 82; early spring work, 84; of universal application, 88; in detail, 177. 



Tilling, results of, 79; how summer tilling done, 82. 



Time for quick work, 145. 



Time, of cultivation, 140, 144; of harrowing, 187. 



Tools for the farm, XLIII, 302. 



True soil mulch, 250. 



Trees, on the farm, XXIII, 204; for shade and shelter, 204; practical work with, 

 205; ground for, 206; setting of, 207; peach, 5 months old, 207; late cultivation, 

 209; causes of failure with, 211; peach 17 months old, 207; Illinois experience 

 with, 211; Kansas experience with, 213; shade results, 214; elm, 17 months 

 old, 215; method of planting, 241. 



Value of machinery per acre, 30 



Water holding capacity of the soil, XIII, 107; water contents of soil, 62; soil con- 

 ditioas, 109; stored in the soil, 119; stored in soil for irrigation, 236. 



Weeds, keep dean from field, 178; problem of, 159. 



Weeder, the, 187. 



"Yheat, XXI, 175; crop on Pomeroy farm, 193; eastern Colorado, 190; spring, 176; 

 in three shiges of growth, 179; in Wyoming, 191; germination in two soils, 194; 

 growth of listed, 1S4; harrowing spring, 186; harvesting fifty years ago, 188; 

 listing of, 163; the pioneer's money crop, 194; winter, 191. 



Whitney, Prof. Milton, on fertility, 102; on chemistry, 94; en evaporation, 124; 

 on soils, 132. 



W ; nter killing autumn sown grain, XXXII, 263; prevention ui 2'<i. 



Winter wheat, 191. 



World-wide fame of this work, XXXIX, 286. 



World's Work, on Campbell system, 287. 



Wyoming wheat, 191. 



