A correspondent of The Garden says he had a large quantity of grape vines planted in the open ground, and trained on poles and wires along the gravel walks. " In planting these, I had the holes dug about twenty-five inches deep; I then threw into each hole live or six lumps of old plaster, about the size of my fist; I threw a little earth over the lumps, and then planted the vines in the usual way. The result has been wonderful; the vines, which were not half an inch thick when planted three years ago, are now two inches and more in diameter, and bear finely. The grapes are also freer from disease. Other vines, not so treated, are much smaller and produce less, the fruit being also more liable to disease. To try the effect of this plaster, in planting two American black walnuts, we put the plaster to the one and not to the other. The former grew twice as fast as the other. Last year we dug about the roots of the one to which no plaster was put, and we threw in seven or eight large lumps of plaster among the roots; the trees are now both of the same size, and though only four years old, are sixteen to seventeen feet high."