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...
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