the square hole, in our illustration, and also seen at (c), side view.  These [Page 118] pieces should be about six inches in length and about an inch square.  A thin piece being cut off from one side of each, to the distance of four inches, and ending in a square notch.  The other end should be rounded off, as is also there plainly indicated.  Before adjusting the pieces in place, two tin catches should be fastened to the board, one on each side of the hole.  This catch is shown at (d), and consists merely of a piece of tin, half an inch in width, and three-quarters of an inch in length, tacked to the wood, and having its end raised, as indicated.  Its object is to hold the bow-string from being pulled down after once passing it.  The upper edge of these catch-pieces should be about an inch and a half from the top of the hole, and, if desired, two or three of them may be arranged one above the other, so that wherever the string may stop against the neck of the inmate it will be sure to hold.  The catches being in place, proceed to adjust the pieces of wood, letting the notch be on a line with the top of the pole, or a little above it.  Each piece should be fastened with two screws to make secure.

We will now give our attention to the bait stick.  This should be about six inches in length, and square, as our illustration shows.  There are two ways of attaching the bait-stick to the board, both shown at (e) and (f).  The former consists merely of a screw eye inserted into the end of the stick, afterwards hinged to the board by a wire staple.  The point for the hinge, in this case, should be about an inch below the auger hole.  In the other method (f), the bait stick should be a half inch longer, and the spot for the hinge a quarter inch lower.  At about a quarter of an inch from the square end of the bait stick a small hole should be made by the use of a hot wire.  An oblong mortice should next be cut in the board, so as to receive this end of the stick easily.  A stout bit of wire should then be inserted in the little hole in the stick, and laying this across the centre of the mortice, it should be thus secured by two staples, as the drawing shows.  This forms a very neat and simple hinge.  To determine the place for the catch, insert the flat end of the little plug fairly into the auger-hole above the hinge.  Draw up the bait stick, and at the point where it comes in contact with the point of the plug, cut a square notch, as shown in (b).  Everything now awaits the bow.  This should be of hickory or other stout wood; it is well to have it seasoned, although a stout sapling will answer the purpose very well.  It should be fastened to the top of the board by two heavy staples, or nails driven on each side of it.  The string should be heavy Indian twine.  Our [Page 119] illustration shows the trap, as it appears when ready for business.  The plug is inserted, as already described, with the