"Miss E. J. D.," Nicholasville, Ky., says: "About six years ago a magnificent oak tree was struck by lightning and a groove some three or four inches deep was burnt in the tree about twenty feet from the ground down. Will you please inform me through the columns of the Gardeners' Monthly how I may arrest the decay that has already begun? "

[Water is the great agent of decay in these cases. Cut or scrape out all decayed material down to hard or solid wood, so far as it can be reached, even though a little good wood has to be cut away to get at it, and cut so that no water can be retained anywhere; then paint every part of the hard surface that can be reached. In this manner decay will be arrested, until in time by the regular accretions of new growth, the edges of the living parts will meet and unite, and only the mark formed where the new growths meet, as in a grafted part of a tree, will be the only indication that it ever was injured. - Ed. G. M].