The foundation if used the full depth of the frame, stretches so that many cells are so enlarged as to be used for drone-brood. This demands, if we use the sheets unstrengthened, that they only be used as guides, not reaching more than one-third of the depth of the frame. Strips not less than four inches wide will not sag to do any harm. The foundation, too, should not quite reach the sides of the frame, as by expansion it is liable to warp and bend. Captain J. E. Hetherington has invented a cure for this stretching and warping, by strengthening the foundation. To do this, he runs several fine copper wires into the foundation as it passes through the machine. I understand, too, that Mr. M. Metcalf, of this State, has a similar device now being patented. This is a valuable suggestion, as it permits full-sized sheets of foundation to be inserted in the frames. I presume that very soon all worker-foundation will contain such wires. TO FASTEN THE FOUNDATION. In the thin sections, the foundation can best be fastened by use of the melted wax. To accomplish this, I have used a block made thus: Saw a fifteen-sixteenths inch board so that it will just exactly fill a section. Screw this to a second board, which is one-half inch broader each way, so that the larger under board will project one-quarter of an inch each side the top board. Now set the section over the top board, place the foundation, cut a trifle shorter than the inside of the section, within, close to the top and one side of the section, and cause it to adhere by running on a little of the melted wax, which, by use of a kerosene lamp or stove, may be kept melted. If the basin is double-walled, with water in the outer chamber and wax in the inner, it is much safer, as then the wax will never burn. If the tops of the sections are thick, they may be grooved, and by crowding the foundation into the groove, and, if necessary, pressing it with a thin wedge, it will be securely held. [Illustration: Fig. 68.]