I read with much interest Prof. Van Deman's note in your last issue, in which he suggests that the Blackman plum is a hybrid between the plum and peach.

The possibility of such a hybrid, the hope of obtaining a fruit with the combined excellencies of both, with perhaps the down of the peach to give comparative immunity from the attacks of the cur-culio, seemed to me worthy of experiment, and in the spring of 1880, I spent an afternoon fertilizing Wild Goose plum blossoms with Alexander peach pollen. The emasculation was carefully performed, but after pollinization the flowers were not sequestered.

The seeds of all the fruit borne upon the branch under consideration, were carefully planted, and subsequently moved into nursery row. All the seedlings save two were evidently plums, pure and simple. The two exceptions resembled the peach as much or more than the plum, and were more vigorous and erect, without tendency to bear thorns. They were moved to the orchard and almost without exception visitors to our grounds have pronounced them peach trees.

Through all these years it has been a pleasant fancy to think that the experiment had been made in an untrodden field, and the time when the trees should be judged by their fruit was one of anxious anticipation. The reason that no fruit has yet been borne, is because in Kentucky the winters of 1883, 1884 and 1885 have been sufficiently severe to destroy the peach buds, and these seem to be no more resistive. Not a flower has yet expanded, though the trees were well supplied with fruit buds both in 1885 and 1886. American plums endured the lowest temperature known in Kentucky, on January 5th, 1884, without the loss, apparently, of a single fruit-bud, and why the buds of these two trees were then destroyed and again in 1885, at a temperature not so low, rather favors the idea that they are hybrids. At this writing, the buds are uninjured, and the hope is entertained that fruitage may add conclusive testimony.

Lexington, Ky.

[We place this communication in our Natural History column, because we regard it as a valuable contribution to science. For many years we have read of " hybrids " between peach and plum, but none have resulted from actual experiment, but were simply "supposed to be hybrids, because peaches and plums were growing near each other." We could not forget that such a tree as the peach, which can give us a nectarine now and then, would be fully able to perform the pranks detailed, without hybridization, and from bud variation alone.

The subject is so interesting that cumulative evidence is still desirable, and we hope experiments by emasculation and careful manipulation will still be made, and the results reported. Would not some extra protection, to prevent the flower buds from extreme cold, be practicable?-Ed. G. M.] __________________