"A.," Union Springs, N. J., writes: " Will you please inform me of your experience with peach on plum, either on Myrobolan or native stocks and how do they compare, thus worked, with those on their own roots as regards productiveness, freedom from yellows or other diseases, exemption from attacks of the borer, etc., also as to longevity of trees. What stock do they do best on? Will you kindly do so through the Gardener's Monthly?"

[The questions put by our correspondent we cannot answer to entire satisfaction, and so present them to the Gardener's Monthly for that investigation which their great importance demands. We will only say that in Europe the peach is almost always grafted on the plum, - perhaps one might say always, - the varieties used being the Muscle, which is propagated from layers as we do quinces, - and the Mirabelle, which is raised from seeds. The Myrobolan plum is our cherry or miser plum, and is believed to be a native kind, though grown in France to some extent for stocks; but we have never known them to be used in Europe for stocks for the peach. The only experiment in this country to any great degree that we know of, was tried some fifteen years ago at the Evans' nurseries at York, Pa. Mr. Evans pointed out a large block. They grew finely the first year from the bud, but the next had a yellowish tint, and Mr. Evans stated were short-lived, and that he should not repeat the experiment. So far as we know the peaches in Europe are wholly exempt from the terrible disease we know as yellows, but whether this is because the trees are grafted on plum stocks, or that other conditions are unfavorable to the propagation of the ferment fungus we cannot say.

What have our correspondents to say about it? - Ed. G. M.]