The entrance (Fig. 39, _e_) is cut in the bottom-board as already explained, except that the lateral edges are kept parallel. A strip of sheet-iron (Fig. 39, _d_) is tacked across this, on which rest the ends of the front end-bars of the frames which stand above, and underneath which pass the bees as they come to and go from the hive. A box, without bottom and with movable top, covers all, leaving a space from four to six inches above and on all sides between it and the frames. This gives chance to pack with chaff in winter, and for side and top storing in sections or boxes in summer. [Illustration: Fig. 40. _Frames and Bottom-Board of the Bingham Hive._] The Bingham hive (Fig. 40) is not only remarkably simple, but is as remarkable for its shallow depth; the frames being only five inches high. These have no bottom-bar. The end-bars are one and a half inches wide, and the top-bar square. The nails that hold the end-bars pass into the end of the top-bar, which is usually placed diagonally, so that an edge, not a face, is below; though some are made with a face below (Fig. 40, _f_), to be used when comb is transferred. The frames are held together by two wires, one at each end. Each wire (Fig. 40, _a_) is a little longer than twice the width of the hive when the maximum number of frames are used. The ends of each wire are united and placed about nails (Fig. 40, _b, b_) in the ends of the boards (Fig. 40, _c, c_) which form the sides of the brood-chamber. A small stick (Fig. 40, _a_) spreads these wires, and brings the frames close together. A box without bottom and with movable cover, is placed about the frames. This is large enough and high enough to permit of chaff packing in winter and spring. The bottom-board may be made like the one already described. Mr. Bingham does not bevel the bottom-board, but places lath under three sides of the brood-chamber, the lath being nailed to the bottom-board--and then uses the blocks to contract the entrance (Fig. 40, _g_). The advantages of this hive are, simplicity, great space above for surplus frames or boxes, capability of being placed one hive above another to any height desired, while the frames may be reversed, end for end, or bottom for top, or the whole brood-chamber turned up-side down. Thus, by doubling, we may have a depth of ten inches for winter.