ANSWERS OBTAINED. 



11 



Dak.; North Platte, Nebr. ; Akron, Colo.; Hays and Garden City, 

 Kans.; Amarillo and Dalhart, Tex. The locations of these stations 

 are shown on the accompanying map, figure 1. Results have been 

 obtained for three years from Edgeley and North Platte; for two 

 years from Amarillo, Highmore, and Dickinson; and for one year 



n3- up 109- 107° jos^ ior \or 99j 97* 95 * 



Fig. 1.— Map of the Great Plains area, showing the location of the experiment 

 stations and the annual and seasonal rainfall. 



each from the remaining stations. They show, therefore, the results 

 of eighteen comparative tests, involving more than a thousand plats 

 located at eleven stations widely distributed throughout the Great 

 Plains area, and should be fairly representative of the area. 



187 



