Abstract
Replicated tests in a 33 cubic foot steel vacuum chamber at reduced pressures above 28 inches on a mercury gauge, at temps. of about 75 F, and to a depth of 9 inches in bales of Turkish tobacco, resulted in 100% mortality of all stages of the tobacco moth, Ephestia elutella, after 72 hrs. The same treatment produced almost as great mortality of all stages except the eggs of the cigarette beetle, Lasioderma serricorne. The eggs of the latter spp. required an exposure of 10 days to high vacuum to result in 1GC% mortality.

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