INDEX 



495 



United States Reclamation Service, 

 370, 461. 



Utah, alkali from, 391. 



Utah Station, 15, 17, 26, 29, 30, 35, 

 38, 48, 60, 77, 88, 111, 126, 129, 

 136, 142, 146, 154, 159, 165, 166, 

 167, 184, 190, 213, 225, 228, 250, 

 255, 259, 292, 294, 336, 468, 469. 

 duty of water results, 346. 



Utah, time of irrigation in, 320. 



Valencia Canal, 450. 

 Vineland, N. J., 407. 

 Von Seelhorst, 145. 

 Voorhees, 410, 418, 469. 



Walnuts, spacing, 317. 

 Warington, 93. 



Washington, time of irrigation in, 320. 

 Water. See also Soil moisture, Rainfall 

 and Snow. 



film, 11. 



soil as reservoir, 21. 



how disposed of in soils, 40. 



soil changes due to, 64. 



cracked sediments, 68. 



effect on top soil, 69. 



successive wetting and drying, 70. 



universal solvent, 72. 



continuous solubility of soil, 74. 



composition of drainage, 78. 



river, salinity of, 82. 



dbmposition of river waters, 84. 



river, arid and humid, contrasted, 85. 



lake, salinity of, 86. 



mineral springs, salinity of, 86. 



natural and soil-moisture, contrasted, 

 87. 



plant-food added by, 87. 



use of concentrated w. in irrigation, 

 89. 



surveys, need of, 90. 



natural composition of, 90, 91. 



natural, classification of, 92. 



plant-food value of, 93. 



river, suspended matter in, 95. 



seasonal variation of suspended mat- 

 ter, 98. 



suspended matter from surface soil, 

 120. 



suspended matter added to soil by, 

 100^ 



composition of river sediments, 101. 



and soil life, 104. 



effect of sediments on crop yields, 104. 



absorption by roots, 109. 



tillage is, 142. 



Water, cost and varying quantities of, 

 144. 



in plants, 217. 



quantity for wheat, 248. 



storage in soil, 236. 



duty, measurement and division, 331. 



units for measuring, 332. 



measurement of, 347. 



distribution of, 357. 



ground, 374. 



use of saline, 387. 



irrigation, sources of, in humid 

 climates, 413. 



conservation methods in humid 

 climates, 414. 



constants, 477. 

 Water-cost. See also Transpiration. 



of dry matter, 127. 



defined, 131. 



of various plants, 133, 134. 



range of ratio, 134. 



effect of seasons, 136. 



effect of soil on, 137. 



effect of cultural operations in, 141. 



vigor of plant and, 143. 



and varying quantities of water, 144. 



nature of plant and, 154. 



summary of factors, 155. 



of dry matter, 232. 

 Water-film, relation to particle, 12. 

 Water-logging, drainage against, 381. 

 Water master. See also Irrigation 

 engineer. 



for water distribution, 367. 

 Watermelons under irrigation, 307. 

 Waters, 410. 

 Water-table, 34. 

 Weir, 351. 



rectangular, 351. 



trapezoidal, 352. 



triangular, 352. 



discharge over Cippoletti, 478. 

 Welch, 188, 234, 265, 285, 313. 

 Westgate, 285. 

 Wheat, 152, 168. 



protein in, 221. 



composition of flour from, 228. 



yield due to rainfall, 234. 



spring vs. fall, 241. 



quantity to sow, 241. 



method of sowing, 241, 242. 



method of irrigation, 243. 



cultivation of, 243. 



time of irrigation, 246. 



duty of water, 248. 



yields with varying water, 250. 



possible yields with water, 252. 



