Miss E. P. K., Hartford, Conn., writes: "We are told that you have spoken in your paper of the fact that it is rare for the Wistaria vine to produce seeds. Our vine, which is about twenty years old, has been for several years thickly covered with pods, of which we send you a sample." We have not simply said it is rare for the Wistaria to produce seeds, but that it is rare for it to produce seeds till its vegetative condition, or its growth-force is in a measure exhausted. In illustration of this we have pointed out that fruit is rarely seen on vines running over trellises or trees, until by age, or nothing further for the branchlets to twine on, the growth force is exhausted, - while Wistarias trained to be self-supporting, that is dwarf trees, with nothing whatever to twine a single branchlet on, are generally productive. In the case of a Wistaria that has its vital or nutritive powers (for the terms are nearly synonymous) assisted by tree or trellis, the reproductive does not follow the growth force for ten or fifteen years, while a Wistaria made to assume a self-supporting condition, will bear freely in four or five.

The point was made to show that the non-fruitfulness of the Wistaria, as after commented on, was not through the agency or non-asency of insects in cross-pollenizing the flowers, but was rather a matter connected with nutrition; a subject which in its relation to the sexual condition of flowers has rarely been examined by any but the writer of this. This paper on Wistaria was intended to be a contribution with others already made to that subject. - Ed. G. M].