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To the Editor:
—Two years ago, as I heard the story of a friend who collapsed after hours in his orange grove on an intensely hot day, it occurred to me that heat exhaustion is dehydration. He was brought back to practically normal by 1,000 cc. of dextrose salt solution in the half hour it took to give it. The Journal published my report, Oct. 17, 1931, p. 1169.My suggestion a little later to Dr. Ray Lyman Wilbur, then Secretary of the Interior, that Hoover Dam would be a good place to test this principle resulted in Dr. W. A. Haas and the officials of the Six Companies interesting themselves in it and establishing the necessary plant and in Harvard University sending a research group to the dam in the summer of 1932.In April, 1932, I visited Hoover Dam and discussed prevention and treatment of heat exhaustion with
Van Zwalenburg C. HEAT PROSTRATION AND DEHYDRATION. JAMA. 1933;101(16):1253-1254. doi:10.1001/jama.1933.02740410055024