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William Hamilton Gibson
This eBook from the Gutenberg Project consists of approximately 313 pages of information about Camp Life in the Woods and the Tricks of Trapping and Trap Making.
is advisable, however.  Two small wooden pegs (f) should be driven, one on each side of the spindle, thus preventing any side-movement of the latter.  It will now be readily seen that the slightest weight on either end of the treadle-piece within the trap must tilt it to one side, thus throwing the pivot-piece from its bearing on the spindle; and the latter being released, lets fall the weight with crushing effect upon the back of its hapless victim.

The trap is very effective, and is easily constructed.  The bait should be rested in the centre of the treadle platform.  Built on a larger scale, this device may be successfully adapted to the capture of the mink, martien, and many other varieties of game.

THE BOARD-FLAP.

[Illustration]

[Page 131] For the capture of mice this is both a simple and effective contrivance, and it may be enlarged so as to be of good service for larger animals.  Procure two boards, one foot square and one inch thick, and secure them together by two hinges, as in the illustration.  Assuming one as the upper board, proceed to bore a gimlet hole three inches from the hinges.  This is for the reception of the bait stick, and should be cut away on the inside, as seen in the section (a), thus allowing a free play for the stick.  Directly beneath this aperture, and in the lower board, a large auger hole should be made.  A stout bit of iron wire, ten inches in length, is now required.  This should be inserted perpendicularly in the further end of the lower slab, being bent into a curve which shall slide easily through a gimlet hole in the edge of the upper board.  This portion is very important, and should be carefully constructed.  The bait stick should be not more than three inches in length, supplied with a notch in its upper end, and secured in the aperture in the board by the aid of a pivot and staples, as is clearly shown in our drawing.  The spindle is next in order.  It should consist of a light piece of pine eight and a half inches in length, and brought to an edge at each end.  A tack should now be driven at the further edge of the upper board on a line with the aperture through which the wire passes.  Our illustration represents the trap as it appears when set.  The upper band is raised to the full limit of the wire.  One end of the spindle is now adjusted beneath the head of the tack, and the other in the notch in the bait stick.  The wire thus supports the suspended board by sustaining the spindle, which is held in equilibrium.  A slight touch on the bait stick soon destroys this equilibrium:  a flap ensues, and a dead mouse is the result.  The object of the auger hole in the lower board consists in affording a receptacle for the bait when the boards come together, as otherwise it would defeat its object, by offering an obstruction to the fall of the board, and thus allow its little mouse to escape.

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