Relative to the bloom on sweet potato plants, on which several articles have appeared in your valuable magazine, would say that I have been cultivating sweet potatoes more or less for thirty years, and never knew them to bloom until the summer of 1885; then they blossomed very profusely in this section, owing, I think, to the severe drought we had in May and June of that year. The flowers resemble very much the common Morning Glory, and one of my neighbors, supposing this vine had got in among his potatoes, pulled up quite a number of plants before he discovered his mistake. Do not think any of the flowers matured seed. Falls Church, Va.

[Mr. M. is undoubtedly correct in the suggestion that the extra warm and dry season influenced the blooming of the sweet potato that year. The plant is a well-known lover of heat, and flowers always at the end of its season's growth. It will then naturally flower in those regions where there is a long summer, and not where the summers are short. We did not know, however, till the correspondence in our paper developed the fact, that the summers any where in the United States were long enough to enable it to flower or seed, and the inference has been that all the varieties have been produced by bud variation. It is the latter fact that gives great scientific and practical interest to the question. - Ed. G. M].