258 



INDEX 



Water: 



absorption, prevention of, 34 



composition of, 231, 232 



for irrigation, 224 



from Gila River, 225 



from Salt River, 225 



from various rivers, 226, 227, 

 228 



supply increased by drainage, 

 169 



-table, effect of, 145 



-table, effect of on evaporation, 

 158 



-table in judging land, 243 



toxic limits, 228 

 Weed, H. H., 22 

 Weir, W. W., 166, 188, 191 

 Western wheat grass, 203 



Wheat, 210 



White sage, as alkali indicator, 63, 72 



Whitney, M., 18, 22, 33 



Widtsoe, J. A., 239 



Wig, R. J., 190, 191 



Wild grasses, 205 



Wiley, H. W., 104 



Willcocks, W., 15, 191, 239 



Wohltman, F., 239 



Wyoming, alkali in, 8* 



Yields reduced by salts, 56 

 Yohe, H. S., 191 



Zinc, effect on salts, 116 



