28 BULLETIN 400, V. S. DEPARTMENT OP AGRICULTURE. 



The climate of these basms and valleys is usually regarded as 

 semiarid to arid. Table XX shows the elevation of each station and 

 the recorded annual and seasonal precipitation during the years 



^^^^^^^^^H^V ^^^^^^^|9 









HH '*fwM 



H 





wm 



f^^KSISK^^ V^^^l 







HB^^^^Bft#^^i^j^^i 







^^^^^i^^^^^^^^^^^^^^l 



Fig. 8.— Heads and kernels of tliree varieties of soft white wheat, natural size: 1, Palouse Bluestem; 2, Early 



Baart; 3, Little Club. 



when the experiments herein reported were in progress, so far as the 

 data are available. 



These areas are characterized by low precipitation. Most of it 

 falls during the autumn, winter, and spring months instead of during 



