APPLE CANKER. 

 FIG. 1. Young branch of Apple with a small canker present on the 



right-hand side. The commencement of the wound is at the base 



of short side shoot. 

 FIG. 2. Older branch. The fungus here has not only destroyed the 



tissues on one side of the branch, but has completely encircled 



and killed it. 



10-1 



