. Bulletin. Agriculture. Fig. 1.—Method of wrapping infested oak with lead sheathing to determine number of thick- nesses beetles are able to penetrate in emerging. Larval mines in wood and emergence holes of beetles in end of section. (Table 2, No. 55a.) Photograph by H. E. Burke. Fig. 2.—Infested section of oak wrapped with lead alloy to de- termine number of thicknesses o f lead penetrated by beetles in emergence. Method of wrap- ping also shown. (Table 3, No. 62.) Photograph by H. E Please note that these images are extracted from scanned page images that may have been digitally en

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. Bulletin. Agriculture. Fig. 1.—Method of wrapping infested oak with lead sheathing to determine number of thick- nesses beetles are able to penetrate in emerging. Larval mines in wood and emergence holes of beetles in end of section. (Table 2, No. 55a.) Photograph by H. E. Burke. Fig. 2.—Infested section of oak wrapped with lead alloy to de- termine number of thicknesses o f lead penetrated by beetles in emergence. Method of wrap- ping also shown. (Table 3, No. 62.) Photograph by H. E Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. Washington : Dept. of Agriculture

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectagriculture, bookyear