. Defects in timber caused by insects. Wood; 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 (Dendroetonus frontalis). A, side view ; B, cross section showing stain extending to the heartwood. herious 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
. Defects in timber caused by insects. Wood; 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 (Dendroetonus frontalis). A, side view ; B, cross section showing stain extending to the heartwood. herious 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 Snyder, Thomas Elliott, b. 1885. Washington, D. C. : U. S. Dept. of Agriculture
Size: 1147px × 2179px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwa, booksubjectwood
