
          116

A writer from the eastern shore of Maryland in Am. Farmer,
Balt., Jan., 1875, pp. 25-6 scouts the idea that yellows is 
due to fungus on the roots.  He propounds the conundrum:
Why plums grafted on peach roots remain free from yellows
when standing within a foot of peach trees which die of it.

He says peach aphis destroyed thousands of peach trees
on the eastern shore of Maryland last year, 1874.  Also states
that they may be found "in dead of winter, congregated in
campmeeting numbers upon the roots."

One writer has seen unmistakable yellows cured by cultivation.
Ibid.

Compare Curtis on Aphides in Vol. 6, Tr. Lin. Soc.

Compare paper on aphis and yellows by Col. Wilkins. Ibid.
pp. 100-102.

Cf. also Ibid. pp. 146, and 287, 306.

Prof. P. R. Uhler, of Baltimore, Pres. Md. Ac. of Sciences,
pronounced the aphis--A. chrysanthemi, not A. Persicae. Says
it was described from ox-eye daisy.
        