DEGREES OF ROTTENNESS IN WOOD.
It has been proved by microscopical research that the pores of wood invito the passage of moisture in the direc- - tibn of the timber’s growth,, but repel it in the opposite direction. This will account for a> phenomenon often noticed—namely, that two pieces of timber sawn from the same section of the tree sometimes appear to possess variable degrees of durability. For instance, if a gate-post is placed right end up the moisture of the soil will affect it, while the rain falling on the top! will do little harm, but if the butt end of the tree is placed uppermost the top of the post will decay. The reason of this is that the moisture of the atmosphere'will penetrate the pores of the wood more rapidly in this position. Jt' should always be remembered th;.t timber fixed in the position in which it originally grew is almost impervious to moisture, and is therefore more durable than when less naturally situated.
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Te Aroha News, Volume XII, Issue 1790, 27 November 1895, Page 2
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166DEGREES OF ROTTENNESS IN WOOD. Te Aroha News, Volume XII, Issue 1790, 27 November 1895, Page 2
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