Exogenous

Vegetable stem which increases in diameter by the periodical formation of a new layer of ti ue between the older wood and the bark, consisting of a central pith, one or more layers of wood, and an exterior bark, itself composed of several different layers. The wood is traversed from center IMG:content-1390.jpg:[blocks in formation] IMG:content-1391.png:[graphic] IMG:content-1392.jpg:[ocr errors] IMG:content-1393.png:[blocks in formation] IMG:content-1394.jpg:[graphic] x2 +(log a) X L2 L3 some other. of such industries in the same localities. IMG:content-1395.png:[merged small][merged small][graphic][subsumed][merged small][graphic][subsumed][subsumed][merged small]