. The elements of forestry : designed to afford information concerning the planting and care of forest trees for ornament or profit and giving suggestions upon the creation and care of woodlands with the view of securing the greatest benefit for the longest time, particularly adapted to the wants and conditions of the United States. Forests and forestry. Seasoning of Wood. 141. 570. Seasoning tends to secure the durability of wood not ex- posed to the weather, or in contact with the earth, or with damp walls, if sufficient ventilation is allowed. The presence of moisture, and especially of the
. The elements of forestry : designed to afford information concerning the planting and care of forest trees for ornament or profit and giving suggestions upon the creation and care of woodlands with the view of securing the greatest benefit for the longest time, particularly adapted to the wants and conditions of the United States. Forests and forestry. Seasoning of Wood. 141. 570. Seasoning tends to secure the durability of wood not ex- posed to the weather, or in contact with the earth, or with damp walls, if sufficient ventilation is allowed. The presence of moisture, and especially of the starch, sugar, and albumen of the sap in wood, tends to hasten fermentation and decay. If these are partly dis- solved out by placing the freshly cut timber in running water, it drys more readily. Seasoning by smoking has the effect of increas- ing the durability of wood, by charging it with creosote, but this is corrosive to iron, and should not be used in contact with it. 571. In the process of seasoning, wood tends to shrink, from the contraction of the tissues as they become dry. As there is more moisture and less wood fiber in the outer layers, the contraction is greatest toward the outside, as shown in the annexed engraving. The process takes place more slowly, and with less cracking in winter. It is still further improved by delaying the drying, which maybe done by placing in the shade,'»^fff«SV°Lbe'?shK where the air circulates freely between the inae'ontCTfrola^**^^' pieces, but it should not be exposed to the dry- ing winds. 572. It is desirable to prevent the cracking of timber at the ends, by which means a loss is suffered in the more valuable kinds. This may be prevented in a great degree, by pasting heavy paper over the end, or by painting or washing with diluted muriatic acid, neu- tralized with lime. 573. If there be nothing at hand better, the timbers may be lightly shaded from the sun by branches of trees or any other slight covering, where it is desirable
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
