INDEX. 



Page. 



Akron, Colo., evaporation 18 



relation of rainfall to yield of wheat 26, 29 



Amarillo, Tex., evaporation 19 



rainfall 12,26,29-30 



relation to yield of wheat 26, 29-30 



Arid regions. See Regions, dry-farming. 



Arizona, evaporation table 18 



rainfall map. 33 



table. . . ........ ........ ................... 46 



Bellefourche, S. Dak., evaporation 19 



relation of rainfall to yield of wheat. . 26, 28 



Belz, J. 0., on run-off during torrential rains . . 15-16 



Bismarck, N. Dak., monthly rainfall. 12 



Boise, Idaho, monthly rainfall 12 



Boston, Mass., evaporation . . 18 



Calexico, Cal., evaporation . 18 



California, evaporation table H 18 



rainfall map , . 34 



table.... 47-51 



Carlsbad, N. Mex., evaporation 18 



Chilcott, E. C, on cultural methods and crop rotations 25 



Cleveland, Ohio, evaporation , 19 



Colorado, evaporation table 18 



rainfall map 35 



table 51-52 



Columbia Basin, rainfall, necessity for wheat production 24-25 



Cooper, T. P., and Parker, E. C, on cost of wheat growing in Minnesota 24 



Corinne, Utah, evaporation 19 



Corn, yield, relation of rainfall in Texas 30-31 



Cotton, yield, relation of rainfall in Texas 30-31 



Crop rotation. See Rotation, 

 yield. See Yield. 



Cropping, alternate, and summer tillage, highest development of dry farming. . 8 

 Cultivation methods. See Methods, cultural. 

 Cultural methods. See Methods, cultural. 



Dalhart, Tex., evaporation 19 



rainfall 15,26,29 



relation to yield of wheat 26,29 



run-off 15 



Dalles, Oreg., monthly rainfall 12 



Detroit, Mich., evaporation 18 



Dickinson, N. Dak., evaporation 18 



relation of rainfall to yield of wheat 26, 27 



Dry farming. See Farming, dry. 



.188 67 



