. Bulletin. Agriculture. —^,sheet ofleadaUoy which was covered by the sheet of zinc, £. Most of the beetles were unable to penetrate the zinc and stopped in A. One, marked A on sheet £, did penetrate the zinc. (Table 1, No. 25b.) Photograph by H. E. Burke. Fig. 4.—Sheets of lead alloys tacked over infested wood. / was covered with a sheet of lead carborundum coated on the upper or outer s]de. It did not seem to stop the beetles at aU. Note clean-cut holes. // was covered with a sheet of lead carborundum coated on the inner side next to it. It seemed to stop most of the beetles. Note how
. Bulletin. Agriculture. —^,sheet ofleadaUoy which was covered by the sheet of zinc, £. Most of the beetles were unable to penetrate the zinc and stopped in A. One, marked A on sheet £, did penetrate the zinc. (Table 1, No. 25b.) Photograph by H. E. Burke. Fig. 4.—Sheets of lead alloys tacked over infested wood. / was covered with a sheet of lead carborundum coated on the upper or outer s]de. It did not seem to stop the beetles at aU. Note clean-cut holes. // was covered with a sheet of lead carborundum coated on the inner side next to it. It seemed to stop most of the beetles. Note how they mined to the side in attempting to escape boring through it. (Table l,, 2b.) Photograph by THE LEAD-CABLE 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
