2 BULLETIN 1198, U. S. DEPARTMENT OF AGRICULTURE. 
approximately 53 per cent of the total production in the United 
States. From these centers the wheat movement has been gradually 
westward. In 1859 the principal wheat-producing regions were 
SPRING WHEAT 
Acresge — 1919 
Lech Dot Pepresents 
10,000 Acres 
Fie. 1.—Distribution of spring wheat acreage in the United States, 1919. 
western Ohio, Indiana, Hlinois, southeastern Wisconsin, and southern 
Michigan. These States taken together contributed 46 per cent of 
the total production. The movement continued westward across 
WINTER WHEAT 
Acresge — /9/9 
Lach Dor Fepresents 
/0.000 Acres 
Fic. 2.—Distribution of winter wheat acreage in the Uuited States, 1919. 
Wisconsin into Minnesota and North and South Dakota, and through 
Illinois and Iowa, into Missouri, Kansas and Nebraska, so that, by ¥ 
Hee these 6 States contributed about 36 per cent of the total pro- 
duction, 
