. Defects in timber caused by insects. Wood; Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 9 The larvae of some types of ambrosia beetles excavate side gal- leries at right angles to the gallery made by the adult, which tun- nels into the wood to deposit eggs; other types excavate no side galleries. Some holes are clear; others are stained black by the action of fungi, some of which the beetles cultivate for food in their. Fig. 7.—Pinholes caused by ambrosia beetles in heading and tight cooperage in South Carolina. Please note that these images are extracted from scanned page images that

. Defects in timber caused by insects. Wood; Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 9 The larvae of some types of ambrosia beetles excavate side gal- leries at right angles to the gallery made by the adult, which tun- nels into the wood to deposit eggs; other types excavate no side galleries. Some holes are clear; others are stained black by the action of fungi, some of which the beetles cultivate for food in their. Fig. 7.—Pinholes caused by ambrosia beetles in heading and tight cooperage in South Carolina. Please note that these images are extracted from scanned page images that Stock Photo

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. Defects in timber caused by insects. Wood; Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS 9 The larvae of some types of ambrosia beetles excavate side gal- leries at right angles to the gallery made by the adult, which tun- nels into the wood to deposit eggs; other types excavate no side galleries. Some holes are clear; others are stained black by the action of fungi, some of which the beetles cultivate for food in their. Fig. 7.—Pinholes caused by ambrosia beetles in heading and tight cooperage in South Carolina. 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 work.. Snyder, Thomas Elliott, b. 1885. Washington, D. C. : U. S. Dept. of Agriculture

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RMM8BF7E–Defects in timber caused by insects (1490) (20225412223)

RMW22JJ2–Archive image from page 20 of Defects in timber caused by. Defects in timber caused by insects defectsintimberc1490snyd Year: 1927 DEFECTS IX TIMBER CAUSED BY INSECTS 19 Fig. 20.—A, enlarged holes made by carpenter ants (Camponotus sp.) in red cedar in Washington ; B, redwood damaged by carpenter ants in California

RMRD28JM–. Defects in timber caused by insects. Wood; Forest insects. DEFECTS IN TIMBER CAUSED BY INSECTS In order to accomplish this saving it is necessary for manufac- turers of wood products to utilize all available information that has been obtained from experiments carried on for many years by the Bureau of Ento- mology, especially the results of scientific re- search on the specific causes of the differ- ent types of insect defects and methods of preventing them. Data contained in earlier bulletins by experts of this bu- reau, as well as new and unpublished data, have been used freely in this bul

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RMM8BF7H–Defects in timber caused by insects (1490) (20659754819)

RMW22JKK–Archive image from page 20 of Defects in timber caused by. Defects in timber caused by insects defectsintimberc1490snyd Year: 1927 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

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RMM8BF7J–Defects in timber caused by insects (1490) (20836750792)

RMW22F8W–Archive image from page 13 of Defects in timber caused by. Defects in timber caused by insects defectsintimberc1490snyd Year: 1927 Fig. 11.—Pinholes in the sap-wood of high-grade cypress blocks ; end view of logs in freight car; wood completely riddled by ambrosia beetles (Platypus compositus and XijWborus sp.) Fig. 12.—Pinholes caused by ambrosia beetles (Xyleborus sp.) in mahogany flitches

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