. Defects in timber caused by insects. Wood; Forest insects. Fig. 7.—Pinholes caused by ambrosia beetles in heading and tight cooperage in South Carolina. Fig. 8.—Pinholes in green hickory lumber caused by an ambrosia beetle (Xyle- borus xi/lographus) galleries. Injury to green heartwood stock and to partly seasoned stock of such woods as hickory and cypress in many cases does not produce the stain. These holes are always open (never filled with dust), and are either clear or black and associated with discolored streaks or stains 38252°—27 2. Please note that these images are extracted from sc
. Defects in timber caused by insects. Wood; Forest insects. Fig. 7.—Pinholes caused by ambrosia beetles in heading and tight cooperage in South Carolina. Fig. 8.—Pinholes in green hickory lumber caused by an ambrosia beetle (Xyle- borus xi/lographus) galleries. Injury to green heartwood stock and to partly seasoned stock of such woods as hickory and cypress in many cases does not produce the stain. These holes are always open (never filled with dust), and are either clear or black and associated with discolored streaks or stains 38252°—27 2. 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
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwa, booksubjectwood
