. Agriculture through the laboratory and school garden. A manual and text-book of elementary agriculture for schools. Agriculture. ENEMIES OF PLANTS. 333 base of the trunk, iintler a loose scale of the bark or In a little incision made by the mandibles. In about two weeks the larva is hatched, and at once begins to gnaw into the sapwood and inner bark, where it remains for a year, making "disc- shaped mines," in the lower part of which it. FIG. 121.—ROUND-IIEADKn (Sapenfa Candida, Pah.). (After Division of Entomology, t'nited States Department of Agriculture.) spends the
. Agriculture through the laboratory and school garden. A manual and text-book of elementary agriculture for schools. Agriculture. ENEMIES OF PLANTS. 333 base of the trunk, iintler a loose scale of the bark or In a little incision made by the mandibles. In about two weeks the larva is hatched, and at once begins to gnaw into the sapwood and inner bark, where it remains for a year, making "disc- shaped mines," in the lower part of which it. FIG. 121.—ROUND-IIEADKn (Sapenfa Candida, Pah.). (After Division of Entomology, t'nited States Department of Agriculture.) spends the winter. The following summer it again works in the sapwood, and in the third season " cuts a cylindrical passage upward into the solid wood " (Fig. 122). It afterward gnaws out toward the bark, sometimes going on through the tree.* " It changes to a pupa {<^) near the upper end of its burrow in May, and emerges as a beetle in ; (2) Preventives.—Nature furnishes many Comstock's Manual for tlw S'udy of Insects, p. 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 Jackson, Caroline Ruth, 1871-; Daugherty, Amelia (Crum) "Mrs. L. S. Daughery. " 1859-. New York, O. Judd company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagriculture, bookyear
