These traps are made of all sizes, from that suitable for the capture of the house rat, to the immense and wieldy machine adapted to the grizzly, and known as the "bear tamer."

They may be bought at almost any hardware shop, although a large portion of the traps ordinarily sold are defective. They should be selected with care, and the springs always tested before purchase. Besides the temper of the spring, there are also other necessary qualities in a steel trap, which we subjoin in order that the amateur may know how to judge and select his weapons judiciously.

REQUISITES OF A GOOD STEEL TRAP.

1. The jaws should not be too thin nor sharp cornered. In the cheaper class of steel traps the jaws approach to the thinness of sheet-iron, and the result is that the thin edges often sever the leg of their would-be captive in a single stroke. At other times the leg is so deeply cut as to easily enable the animal to gnaw or twist it off. This is the common mode of escape, with many animals.

2. The pan should not be too large. This is a very common fault with many steel traps and often defeats its very object. Where the pan is small, the foot of the animal in pressing it, will be directly in the centre of the snap of the jaw, and he is thus firmly secured far up on the leg. On the other hand, a large pan nearly filling the space between the jaws as the trap is set, may be sprung by a touch on its extreme edge, and the animal's toe is thus likely to get slightly pinched, if indeed the paw is not thrown off altogether by the forcible snap of the jaw.

3. The springs should be strong, scientifically tempered, and proportioned. The strength of a perfectly tempered spring will always remain the same, whether in winter or summer, never losing its elasticity. The best of tempering, however, is useless in a spring badly formed or clumsily tapered.

4. The jaws should be so curved as to give the bow of the spring a proper sweep to work upon. The jaws should lie flat when open, and should always work easily on their hinges.

5. Every trap should be furnished with a strong chain with ring and swivel attached, and in every case the swivel should turn easily.

The celebrated "Newhouse Trap" embodies all the above requisites, and has deservedly won a reputation for excellence second to no other in this or any other country.

They are made in eight sizes, as follows: