Plate III. 



The last portions of the sapwood of a hickory [Hicoria glabra (Mill.) 

 Britton] log to be decomposed by the action of Goriohis prolificans 

 (Fries) Murrill, the remainder of the sapwood being completely decayed. 

 The completely disintegrated wood adhering to these comparatively 

 sound pieces was removed by rubbing and scraping. Note the black 

 color of the superficial portions of these pieces of undisintegrated wood. 

 It was caused by the infiltration of abundant decomposition products 

 into those portions immediately adjoining the completely decayed wood. 

 The central piece (marked X) shows one of the pieces in transverse 

 section. 



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