68 



THE SMALL GRAINS 



instances, they are as different from each other as though 

 they lay in different continents. They are as follows: 

 (1) The Northeastern Spring wheat district, (2) the Semi- 



FIG. 22. Map showing natural wheat districts in the United States 

 and Canada. 



hard Winter wheat district, (3) the Southern wheat dis- 

 trict, (4) the Hard Spring wheat district, (5) the Hard 

 Winter wheat district, (6) the Durum wheat district, 

 (7) the Southern Plains wheat district, (8) the Western 



