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Show WOODKN 8Hn KNEES MADK FROM FIR STUMPS. Recent activity In building ot woodon ships has revived an Industry Indus-try In tho tlmbored regions of tho Wost, in tho furnishing of ship knees the angular braces which aro an Inii portant part of a hull. Thoy are obtained ob-tained from tho stumps of largo trooa at tho anglo whero tho trunk and tho root meet. Douglas-fir stumps aro Bald to yield tho finest and largest ship knees In tho world, and as from 200 to 300 knees may bo used In a slnglo hull, there is a largo demand for them among shipbuilders when their yards aro busy. Most of tho knees nro required to havo an anglo of 90 degrees, and are sawn from stumps grown In level ground, thon finished by planing. From the April Popular Mechanics Magazlno. |