This type differs from all others in the fact that about 35 per cent
of the rain falls in July and August. May and June are generally the
months of least rainfall."
_"The Northern Rocky Mountain and Eastern Foothills Type.--_This
type is closely allied to that of the plains to the eastward, and
the bulk of the rain falls in the foothills of the region in April
and May; in Montana, in May and June."
_"The Plains Type.--_This type embraces the greater part of the
Dakotas, Nebraska, Kansas; Oklahoma, the Panhandle of Texas, and all
the great corn and wheat states of the interior valleys. This region
is characterized by a scant winter precipitation over the northern
states and moderately heavy rains during the growing season. The.
bulk of the rains comes in May, June, and July."
This classification emphasizes the great variation in distribution
of rainfall over the dry-farm territory of the country. West of the
Rocky Mountains the precipitation comes chiefly in winter and
spring, leaving the summers rainless; while east of the Rockies, the
winters are somewhat rainless and the precipitation comes chiefly in
spring and summer.
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