Cuthill’s Black Prince, Boston Pine, Kittley’s Goliath, Alice Maud, British Queen, Ross’s Phœnix, and Victoria. Among pistillate varieties, the flowers are cup shaped, compact, with the sepals of the calyx scarcely perceptible between the petals of the corolla. Stamens seldom visible, and when seen at all they are very minute, not longer than the pistils at the base of receptacle, never showing signs of having fertilizing powers, as the anthers never expand; the whole remains perfectly abortive. Pistils very numerous, uniform, stout, longer than in perfect flowers, and have not such a feathery appearance as in staminate sorts. Receptacle large, conical, always coming to perfection, and the instances where pistillate flowers do not produce berries are very rare, in fact scarcely ever to be met with; at least my sorts have proved so; and it is reasonable to conclude that this has been occasioned by the sorts growing together. The following sorts have proved pistillate with me. Bourbon Pine, Hudson, Swanson, Burr’s Pine, Hovey’s Seedling, Iowa, and Moyamensing. The varieties enumerated, I have growing together (both pistillate and staminate) under what might be called the ordinary mode of cultivation in one place; and in another completely isolated from them, I have a collection of the same sorts which have stood some years longer, and are almost worn out. But this difference of situation, culture, &c. don’t at all seem to have affected or in the least degree altered the organs of re-production in any variety; for to me it seems that the character of pistillate or staminate is as permanent and unchangeable as in any other deciduous plant. A writer in one of the periodicals of the day, supposes it possible that the receptacle of the strawberry might enlarge, or even come to perfection without staminate influence having at all been required. That the experiment of planting a pistillate strawberry in a situation where staminate influence could not reach it and that plant produce no berry, is the fact; as was proved by a cultivator in this neighborhood: but it is to be hoped that the coming season will be taken advantage of by many of your correspondents, for making experiments that will place this question in such a clear and forcible manner before the public, so that all may be convinced, and those interested in the culture of this fruit may take advantage of, and turn to good account the information received. F. We hope that those of our friends who have made any observations, or have anything to say on this interesting subject will be kind enough to communicate them to us.—ED. AMMONIA ON PLANTS.