Science: Wartime Technology, May 31, 1943

Science at war reported these developments and discoveries:

> To protect castaways in shark-infested seas, the Navy announced a shark-repellent substance. A secret concoction which sharks abhor, it was developed by the Office of Scientific Research & Development in cooperation with Marine Studies, Inc., was tested in waters off Florida and Ecuador.

> Body dusting powder is less a luxury than a necessity in tropical warfare. Fungus infections (like "athlete's foot") start and spread quickly in the damp heat. A new after-bath powder contains natural and synthetic insecticides to ward off typhus-carrying...

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