mode of treatment I propose for this, I 

 shall begin with it. 



When fruit trees grow old, the outer 

 bark cracks and rends into thousands of 

 fissures and crevices, where the vermin de- 

 posit their ova, which, coming to life in the 

 spring, attack and destroy first the blossom 

 and leaves of the small short branches on 

 the trunk, and large branches, and soon ex- 

 tend their depredations over the whole tree. 



From this will be seen the reason why 

 fruit trees are so often barren near the 

 trunk, and bear only on the extremities of 

 the branches, and frequently on the upper 

 branches only. For, though the progress 

 of the vermin is very rapid, yet, in fine 

 weather, the fruit on the extremities will 

 get set before they reach it. 



