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1881.| the Peach Tree affected with the “Yellows.” 965 
CAUSE. 
The most important part of the discussion we now have to 
consider; for, knowing the cause, we can then suggest a remedy 
much more easily, 
Fic. 2,—Unhealthy limb, showing the abnormal branchlets. 
The yellows have been attributed to both animal and vegetable 
Origin as well as to exhaustion of the system of the tree. The 
former has had many advocates, but these are becoming fewer 
