Science: Ebbing Tide?

Clarence Alonzo Mills, M. D., professor of experimental medicine at the University of Cincinnati, is ruddy, blue-eyed, vigorous, healthy-looking. He has a theory about health and vigor, and he harps on it so much that to owl-eyed colleagues he seems obsessed. For years Dr. Mills has declaimed that climate has a considerable effect on human growth, stature, sex development, disease resistance.

It is, he believes, a matter of the ease or difficulty with which body heat is disposed of. In cold, dry climates the disposal is easy. This stimulates people, tends to make them grow faster, to protect them against infections. In...

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