. Bulletin. Agriculture. Bui. 1107. U. S. Dept. or Agriculture. PLATE Fig. 1.—Sheet of lead alloy which was tacked over infested section of oak. Area between the lines marked A was covered with a strip of zinc which prevented the beetles from emerging. (Table 1, No. 26b.) Photograph by Fig. 2.—Sheet of lead alloy just under the pre- ceding. Shows how the beetles mined to the side when they were stopped by the zinc. (Table 1, No. 26b,) Photograph by H. E. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi
. Bulletin. Agriculture. Bui. 1107. U. S. Dept. or Agriculture. PLATE Fig. 1.—Sheet of lead alloy which was tacked over infested section of oak. Area between the lines marked A was covered with a strip of zinc which prevented the beetles from emerging. (Table 1, No. 26b.) Photograph by Fig. 2.—Sheet of lead alloy just under the pre- ceding. Shows how the beetles mined to the side when they were stopped by the zinc. (Table 1, No. 26b,) 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
