PEACH AND THE PEAR. 8l 



The disease appears to be confined to the parts of 

 the tree above the ground, no changes having yet been 

 observed in the roots — but I must say that, as yet, they 

 never have been thoroughly and scientifically examined 

 through a series of cases. The disease exists in patches 

 in an orchard, and does not take trees in rotation ; yet, 

 when we have one, more always, sooner or later, sur- 

 round it. 



Yellows has been known on this peninsula since the 

 war of 1812, and is supposed to have been introduced 

 from Pennsylvania, by carrying down improved trees, but 

 it never amounted to a scourge until large orchards 

 began to be cultivated from budded fruit. 



REMEDIES FOR YELLOWS. 



1st. — Plant only natural seed ; cull the seed 

 thoroughly, using only the best specimens. 



2d. — Use only choice buds from choice trees in 

 every way healthy, and from trees that have been raised 

 from natural seed as far back as possible, and budded 

 only from such stock. 



3rd. — Use care in selecting the site of the orchard 

 by rules before laid down. 



4th. — Cultivate thoroughly by methods heretofore 

 given. 



5th. — Prune judiciously. If a tree is attacked, cut 

 out all diseased parts at once, and burn them ; cut back 



