X. Y., Rochester, New York: Clematises are generally raised from seeds; but they mostly take one year to grow. The hybrid kinds are grafted on roots of the Clematis flammula, or perhaps other kinds. The improved clematises have been a long time in this country, having been introduced soon after the appearance of Clematis lanuginosa, which is one of the parents of the great hybrid race; it being a very free seeder. The hybrid clematises have not, however, made much headway with us, owing, we believe, to some root injury, apparently of a similar nature to that produced by the phylloxera on the grape. Where they do well there is nothing more beautiful, and you may safely "experiment in their propagation with a view to selling them."