. An annotated list of the important North American forest insects. Forest insects. 10 BULLETIN 1490, U. S. DEPARTMENT OF AGRICULTURE in the suiroimdin<i: avoocI. In the hitter case, the injury is caused by the larvae or grubs (young) of the beetles. PINHOLE DEFECTS FORMED IN LIVING TREES; A NONPREVENTABLE LOSS When pinhole defects occur in the living tree, it is of course im- possible for the lumberman to prevent the injury, since the holes. Fig. 9.—Pinholes with short stain streaks made in green ash lumber by Platypus compositiis have been made periodically, and often many years before th
. An annotated list of the important North American forest insects. Forest insects. 10 BULLETIN 1490, U. S. DEPARTMENT OF AGRICULTURE in the suiroimdin<i: avoocI. In the hitter case, the injury is caused by the larvae or grubs (young) of the beetles. PINHOLE DEFECTS FORMED IN LIVING TREES; A NONPREVENTABLE LOSS When pinhole defects occur in the living tree, it is of course im- possible for the lumberman to prevent the injury, since the holes. Fig. 9.—Pinholes with short stain streaks made in green ash lumber by Platypus compositiis have been made periodically, and often many years before the tree was cut. The dates when the injury was done can be determined by counting the annual rings of tree growth. Usually the wood surrounding pinholes of this type is stained. PINHOLES IN LIVING TREES CAUSED BY AMBROSIA BEETLES Pinholes are uniform in size, one-eighth of an inch in diameter or smaller (to one twenty-fifth inch), either darkly stained or un-. 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 Craighead, Frank C. (Frank Cooper), 1890-; Perry, George S; Snyder, Thomas Elliott, b. 1885; Hopkins, A. D. (Andrew Delmar), 1857-1948; MacAloney, Harvey John, 1896-; Graham, Samuel Alexander, 1891-; Peirson, Henry Byron, 1894-; Herrick, Glenn W. (Glenn Washington), 1870-1965; Britton, Wilton Everett, 1868-1939; Tanaka, T; Sanders, J. G; Howard, L. O. (Leland Ossian), 1857-1950; Chittenden, F. H. (Frank Hurlbut), 1858-1929; St. George, R. A. (Raymond Alexander), b. 1894; Beal, J. A; Middleton, William, b. 1893; Burgess, A. F; Busck, August, 1870-1944; Carl A. Schenck Collection (North Carolina State University) NCRS. [Washington, D. C. : s. n.
Size: 1442px × 1733px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
