Dry Rot

a decay likely to attack seasoned timber or dead trees. It is due to the growth of peculiar plants of the fungi order. The branching threads, not unlike those of bread mold, penetrate the fibers of the wood and absorb its substance. Not infrequently a timber in a building or bridge, apparently sound, is found to be a mere shell full of crumbling white, yellow, or red dust. Notwithstanding the name, dry rot is more prevalent in the moist climate of Europe than in America. Oak is especially subject to its attacks. The fungus cannot grow in a timber kept perfectly dry. Soaking in creosote and painting before the spores get a footing are preventive measures. Building inspectors test for dry rot with a long awl or probe. The bones of living animals are sometimes attacked by a fungus growth, similar in its powdery effect to dry rot. Figuratively, and with reference to character, a person who preserves a fair outward appearance while inwardly losing strength, courage, and initiative is said to be affected with the dry rot.