86 



THE HEALING OF WOUNDS 



hole, now completely covered by the wood, is seen 

 in Fig. 77. But mischief has come to pass. The 

 tap-hole was an open wound, and fungi entered; 



76. Nail buried in the 

 wood. 



77. Tap-hole buried in 

 the wood. 



and the discolored tissue shows the progress of 

 the decay. 



Pictures of ash logs are shown in Fig. 78. The 

 one on the right had a perfect -looking trunk, 

 although a scar was discernible at one point. A 

 section of the trunk shows that a large limb was 

 once broken off and its stump completely buried 

 under the new tissue; but the log is rotten- 

 hearted (a), and the decay of the old stump (bj 



