Enclosed I send you a problem in botany, only leaves of common and well known species of Prunus and Amygdalus. Each is numbered. Will you tell in the Gardeners' Monthly to which genus each belongs, with reasons assigned why you so classify each, giving the numbers?

I trust you will not consider me impertinent or desirous of putting you to an unreasonable test, as you often have given your opinion through your journal as to what species certain plants belong, of which specimen parts were sent you, even of rare species, and in genera where many other species exist. In this case there is the difference of a genus, and specimens of each considered growing everywhere to compare with these specimens, which are collected from trees here well known to me, and the female parents are always given definite classification by botanists. It is a reasonable and simple problem I propose, hence I offer it in earnest and for a purpose - to develop the important facts which are embodied in it.

After your answer I propose to write a full explanation, etc., of specimens, giving their history in a brief way, which I feel sure you will be pleased to publish. When we have discussed the problem thoroughly, I feel confident it will be solved to the entire satisfaction of everyone, whereas it now stands in a doubtful light, and that, too, embodying a very important principle. If I am in error, I am perfectly willing to endure the correction publicly, as publicly I have been put in the light of probably being incorrect in the matter. As for yourself, you occupy such a position - "on the fence," as it were - that you can gracefully drop either way the facts may point. I know you love candor, and that is just the treatment I will get at your hands.

This method of treatment will elicit unusual attention, and thus excite observation more keenly in such matters.

The exercises of the first regular annual meeting of the Texas State Horticultural Society will take place at Tyler, Texas, July 27th and 28th next. Prospects fine for a large meeting.

Denison, Texas.

[No botanist would admit a test of this kind. Leaves are so often alike that not only distinct genera, but even distinct natural orders, could not be detected. The leaves of Anemone Pennsylvania (Ranunculaceae) mixed with Geranium mac-ulatum (Geraniaceae) would puzzle an expert to separate. Yet, as out correspondent says, we do sometimes manage to give people names of plants on the merest fragments. Still we are not surprised, when we venture on this dangerous ground, to be tripped.

Even now when we say that of the nineteen leaves sent only Nos. 16 and 17 are peaches, and all the others plums, it would not at all surprise us to be told that the laugh comes in against us.

The friendly invitation is highly appreciated. It is, however, not so easy to do two days' work in one, in order to escape continuous daily duties, as it used to be. So the pleasure of acceptance cannot be enjoyed. - Ed. G. M].