142 



Insect Pests. 



Many such quotations could be made from letters received from 

 correspondents. 



FIG. 116. A BAD AND OLD-STANDING ATTACK OF WOOLLY APHIS. 



Xo nurserymen of any standing would dream of sending out 

 apple trees infested with this " blight." I have seen in many cases 

 how carefully they go over the nurseries with hand labour, painting 



