. Fig. 184. — Fomes igniarius upon live beech tree After Atkinson. eaten by insects, or wounded in any way, may result in the exposure of heart or sapwood to the fungous spore. From this point of invasion rot spreads in every direction. When decay reaches the trunk, it spreads upward and downward

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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921