. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . ps, 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,the adult beetles deposit theireggs in burrows or galleries ex-cavated for the purpose, as inFigs. 26 and 27, while in the ^_1latter (Fig. 28) the eggs are onor beneath the surface of thewood. The grubs complete thedestruction by b
. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . ps, 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,the adult beetles deposit theireggs in burrows or galleries ex-cavated for the purpose, as inFigs. 26 and 27, while in the ^_1latter (Fig. 28) the eggs are onor beneath the surface of thewood. The grubs complete thedestruction by boring throughthe solid wood in all directionsand packing their burrows withthe powdered wood. When theyare full grown they transform to ^^ ^f: ^^°^k «^ ^^^^^^ P«^* ,, , ,, -, „ ., iseeties, Lyctus striatus, in the adult, and emerge from the Hickory Handles and Spokes. injured material through holes inthe surface. Some of the speciescontinue to work in the samewood until many generationshave developed and emerged, oruntil every particle of woodtissue has been destroyed and the available nutritive sub-stance a, larva; h, pupa; c, adult;d, exit holes; e, entrance oflarvae (vents for borings areexits of parasites); /, workof larvae; g, wood, com-pletely destroyed; h, sap-wood; i, heartwood. 106 SEASONING OF WOOD Conditions Favorable for Insect Injury — Crude Products— Round Timber with Bark on Newly felled trees, sawlogs, stave and heading bolts,telegraph poles, posts, and the like material, cut in thefall and winter, and left on the ground or in close pilesduring a few weeks or months in the spring or summer,causing them to heat and sweat, are especially liable toinjury by ambrosia beetles (Figs. 22 and 23), round andflat-headed borers (Fig. 24), and timber worms (Fig. 25),as are also trees felled in the warm season, and left for atime before working up into lumber. The proper degree of moisture found in freshly cutliving or dying wood, and the period when the
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkdvannostran
