620 



Bulletin 8o. 



and it also prevents the tree from laying by that store of energy 

 which is needful for next year's crop. I have often known the 

 attack to come on so early in the season that the fruit appears to 

 become stunted even before it is half grown. But the disease is 



6 — The leaf-blight. The left hand specimen was not sprayed ; the other was. 



serious upon the fruit itself, as well as upon the leaves. In well 

 tilled plantations, its usual appearance is that shown in Fig. 7 ; 

 but in serious attacks the fruit cracks or becomes lop-sided, the 

 same as pears do when attacked bj^ the same fungus. 



