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Scientific American 1930-08

ScientificAmerican1930-08.jpg Scientific American 1920-09-25ThumbnailsSecrets 1945-11Scientific American 1920-09-25ThumbnailsSecrets 1945-11Scientific American 1920-09-25ThumbnailsSecrets 1945-11Scientific American 1920-09-25ThumbnailsSecrets 1945-11

Fighting bark beetles with fire. Ranger-naturalist forest preserver uses flame thrower to kill beetles in tree bark without permanently harming tree (or so it would appear).



Artist: Howard V. Brown

Source: Steve Kirch, collector, and creator of this website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner