Show figures in wood figures in fit wood have various sources these may be grouped in those due to structure those caused by color variation or pigmentation and to combination ot of the two says saya the american forestry 31 agazIne these again may be classified as nor nial and abnormal or pathologic by Is meant the natural condition of the wood of a sound tree in the abnormal or pathologic are to be found the peculiar distortions and coloration resulting from roin disease the at tacks of insects and activities of various agencies not a rrt part of the regular life processes process eg of the die arpp |