CHEMICAL ANALYSIS, 169 
ent in the wood killed by borers, while the reverse is 
true of the lime. In general, it seems that a diseased 
tree tends to accumulate in its ash a larger percentage 
of potash, both in the wood and fruit, than would be 
normally present in a healthy tree; in the roots, how- 
ever, the reverse appears to be true. There may be 
some exceptions to this rule, but the tendency is as 
indicated. 
Hoping that this information may prove of some use 
to you, I am, Respectfully, 
H. W. WILEY, Chemist. 
U. S. DEPARTMENT OF AGRICULTURE, 
To Rev. W. W. Mrecu, Vineland, N. J. 
