CHAPTER II. 



ON THE CANKER IN APPLE TREES. 



Introduction. 



Par. 77. The white blight, which is now 

 but too well known among the apple trees in 

 this country, is called by some versed in na- 

 tural history Aphis Lanata, and by some Ame- 

 rican blight, by others the French blight : but 

 whether it is a native of America, or France, or 

 either, I think is a matter of doubt ; in fact, 

 all I have read on this subject have passed it 

 over without any useful information ; but I 

 have been informed by some of the established 

 nurserymen near London, that it first made its 

 appearance in this country in the nursery 

 grounds of Mr. Swinton, of Chelsea, who, 

 being curious in fruits, was in the habit occa- 



