. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . Fig. 26. Work of Powder Post Beetle, Sinoxylon basilare, in Hickory Poles,showing Transverse Egg Galleries excavated by the Adult, a, entrance;b, gallery; c, adult. outer bark, or, where there is no bark, just beneath thesurface of the wood. At first the young larvae borealmost invisible holes for a long distance through the sap-wood and heartwood, but as they increase in size the sameholes are enlarged and extended until the larvae have at-tained their full growth. T
. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . Fig. 26. Work of Powder Post Beetle, Sinoxylon basilare, in Hickory Poles,showing Transverse Egg Galleries excavated by the Adult, a, entrance;b, gallery; c, adult. outer bark, or, where there is no bark, just beneath thesurface of the wood. At first the young larvae borealmost invisible holes for a long distance through the sap-wood and heartwood, but as they increase in size the sameholes are enlarged and extended until the larvae have at-tained their full growth. They then transform to adults,and emerge through the enlarged entrance burrows. The. Fig. 27. Work of Powder Post Beetle, Sinoxylon basilare, in Hickory , character of work by larvae; b, exit holes made by emerging broods. work of these timber worms is distinguished from that ofthe timber beetles by the greater variation in the size ofholes in the same piece of wood, also by the fact that theyare not branched from a single entrance or gallery, as arethose made by the beetles. ENEMIES OF WOOD 105 Powder Post Borers The character of the work of this class of insects isshown in Figs. 26, 27, and 28. The injury consists ofclosely placed burrows, packedwith borings, or a completelydestroyed or powdered conditionof the wood of seasoned prod-ucts, such as lumber, crude andfinished handle and wagon stock,cooperage and wooden trusshoops, furniture, and inside finishwoodwork, in old buildings, aswell as in many other crude orfinished and utilized is the work of both theadults and young stages of somespecies, or of the larval stagealone of others. In the former,
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkdvannostran
