Procure an ordinary packing box and mark a line from corner to corner on both ends, as shown, from A to B in Fig. 1. Pull out all the nails from the corners that may cross the line. Nail the top to the box and saw it on the lines marked and two shelves will

Fig 1 FIG.2 Two Shelves Made of One Box

be formed which may be used as shown in Fig. 2. Boxes dovetailed at the corners will make excellent shelves and look neat if painted.