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United States Government Publications, a Monthly Catalog
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Irrigation
None
Land of the Underground Rain
The scarcity of surface water which has so marked the Great Plains is even more characteristic of its subdivision, the Texas High Plains. Settlers on the plateau were forced to use pump technology to tap the vast ground water resources—the underground rain—beneath its flat surface. The evolution from windmills to the modern high-speed irrigation pumps took place over several decades. Three phases characterized the movement toward irrigation. In the period from 1910 to 1920, large-volume pumping plants first appeared in the region, but, due to national and regional circumstances, these premature efforts were largely abortive. The second phase began as a response to the drouth of the Dust ...
