Air Hygiene

From a medical point of view the disadvantage of air transport is its speed. Bugs which would die in an eight-day voyage can survive a two-day flight. Last week, in the December number of the Uni-versity of California Alumni Monthly, an article called Doctors, Insects and Air Routes explained a new harbor hygiene against inbound contagion. To halt immigration of any more such pests as the corn-borer, Japanese beetle or red scale, the U. S. Public Health Service insists that all planes from South America or Asia must be sprayed. Pan American Airways conscientiously sprays its Pacific Clippers with a pyrethrum extract at each stop. Aircraft from Canada and Europe, where pests and diseases are rarer than in the plague-laden Orient, are merely inspected.

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