INDEX 



257 



Sulphuric acid: 



beneficial, 116 



treatment for alkali, 161 

 Sunflowers, 214 

 Surface: 



removal of salts from, 159 



tension affected by alkali, 

 128 

 Survey for drains, 176 

 Swan tract, reclamation of, 162 

 Sweet clover, 199 

 Sycamore, 220 

 Symmonds, R. S., 161, 166 

 Szik lands, 13 



Traphagen, F. W., 15, 22, 33, 202, 



212, 213, 222 

 Treatment of alkali affected by 



origin, 31 

 Treatments for alkali, chemical, 161 

 Trees, 218 

 Treitz, P., 29, 33 

 True, R. H., 41, 48, 59 

 Tuber bulrush, 64 

 Tulaykov, N., 15, 143, 153 

 Tunis, alkali in, 10 

 Turkestan, alkali in, 13 

 Tussock grass, 206 



as alkali indicator, 63, 65 

 Types of drains, 171 



Table of solubility of salts, 105 

 Tables of electrical resistance, 96 

 Tall meadow oat-grass, 204 

 Tamarisk, 221 

 Tamhane, V. A., 15 

 Taylor, C. S., 133, 140 

 Temperature, effect on salt solu- 

 bility, 105, 109, 112 

 Tertiary formation, 26, 27 

 Texas method of alkali analysis, 84, 



85 

 Tilth of soil, effect of alkali on, 120 



Timothy, 202 



Tolerance of various crops to alkali, 



196 

 Torpedo drain, 173 

 Total solids, determination of, 86 

 Tottingham, W. E., 44, 59, 222 

 Toxicity of: 



salts alone, 43 



solutions, 43 

 Toxic limits: 



for bacteria, 135 



of alkali, 42 

 Trailing buttercup, as alkali indi- 

 cator, 64 

 Transpiration reduced by salts, 34 



U 

 United States, alkali in, 8 

 Usar lands, 13, 14 

 Utah: 



alkali in, 8 



method of alkali analysis, 84, 85 



Valeria, as alkali indicator, 64 

 Van Winkle, W., 239 

 Vapor tension reduced by salts, 130 

 Variance of soil solution concentra- 

 tion, 112 

 Variation in composition of water, 



234 

 Vegetables, 215 



Vegetation as alkali indicator, 60, 63 

 Vetch, 200 

 Vinson, A. E., 104 

 Vissotski, G., 15 

 Vreis, H. de, 36, 44 



W 



Waggaman, W. H., 152 

 Warington, R., 146, 148, 153 

 Washington, alkali in, 9 

 Washingtonia palm, 221 



