. Defects in timber caused by insects. Wood; Forest insects. Fig. 20.—A, enlarged holes made by carpenter ants (Camponotus sp.) in red cedar in Washington ; B, redwood damaged by carpenter ants in California. Fig. 21.—Work of a horntail (Urocerus albicornis) in a decaying softwood loj. 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