Abstract
PUBLIC health and stream sanitation are profoundly influenced by the strenuous times in which we are living today. The entire world is shrinking in reference to time and place locations. At the dedication of the National Institute of Health at Bethesda, Md., on October 31, 1940, President Roosevelt graphically told how the jungle yellow fever of Africa was only two days away from the United States by reason of modern transportation by airplane. Likewise our concepts of large drainage basins like that of the Ohio River are changing. It is as though we were taken to a high altitude in an airplane and, looking down, could see the entire basin in
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