This subject had been set apart for consideration, and James Jones, gardener at Girard College, read the Essay, which was afterwards discussed by Messrs. Saunders, Stephens, Miller, Eadie, Pettigrew, Lazenby, Scott, and others. The principles on which the rotation of crops depends were fully explained. Mr. Jones laid down his own mode of operation, which was, to divide his ground into five portions, reserving one-fifth for the permanent roots, such as Rhubarb and Asparagus. The remaining four parts were managed by a four-course shift, with mixed culture. The four main crops were - 1st year, Potatoes and Turnips, followed by Cabbages, etc.; 2d year, Corn, Squashes, and Pumpkins, with Lima Beans, Lettuces, Cucumbers, and Radishes, as intervening crops; 3d year, Peas and Onions; and, 4th year, Parsnips, Carrots, Salsify, and deep-rooted plants, with minor crops intervening. The entire routine of culture was clearly laid down, and the method satisfactorily shown to be at once convenient and profitable.

Should you desire a full report, it is at your command.

The next subject for the consideration of the Society, at the stated meeting of March 11th, is, " Propagation of Plants by Cuttings." Our meetings are open to all, and all interested are invited to take part in the discussions.

[We should be glad to have the discussion. - Ed].