. An annotated list of the important North American forest insects. Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 41. Fig. 44.—Section of short-leaf pine, showing " blue stain " of sapwood after attack by the southern pine beetle (D end root on us frontalis). A, side view ; B, cross section showing stain extending to the heartwood. Serious bluing in the log sometimes appears to take place without the aid of insects. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illu
. An annotated list of the important North American forest insects. Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 41. Fig. 44.—Section of short-leaf pine, showing " blue stain " of sapwood after attack by the southern pine beetle (D end root on us frontalis). A, side view ; B, cross section showing stain extending to the heartwood. Serious bluing in the log sometimes appears to take place without the aid of insects. 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.
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
