WOOD-ROTS: THE TREATMENT OF TREES 103 



difficult tor fungus hyphffi to penetrate ; secondly by the bast, 

 largely made up of active living tissue, and thus resistant to any 

 but specially adapted parasites. In very many cases, therefore, 

 the fungi attacking the wood of Uving trees are perforce wound 







Dravm by W. Buthn 

 Fig. 30 Healing of Pruning 

 Wounds (Mandarin Orange) 



\} ' » ': 



Drawn by W. Buthn 



Fig. 31 Effects of Bad 

 Pruning (Cacao) 



parasites, able to make an entry only when the outer envelopes 

 are broken. 



The Healing of Wounds. 



When the outer wood is exposed, by the cutting or breaking 

 of a branch or by the removal of a patch of bark, it has in itself 



