South Dakota 76,850
Washington 66,880
TOTAL 653,095

Sub-Humid to Humid Group

Kansas 81,700
Minnesota 79,205
Oklahoma 38,830
Texas 262,290
TOTAL 462,025

GRAND TOTAL 1,861,652


The territory directly interested in the development of the methods
of dry-farming forms 63 per cent of the whole of the continental
United States, not including Alaska, and covers an area of 1,861,652
square miles, or 1,191,457,280 acres. If any excuse were needed for
the lively interest taken in the subject of dry-farming, it is amply
furnished by these figures showing the vast extent of the country
interested in the reclamation of land by the methods of dry-farming.
As will be shown below, nearly every other large country possesses
similar immense areas under limited rainfall.

Of the one billion, one hundred and ninety-one million, four hundred
and fifty-seven thousand, two hundred and eighty acres
(1,191,457,280) representing the dry-farm territory of the United
States, about 22 per cent, or a little more than one fifth, is
sub-humid and receives between 20 and 30 inches of rainfall,