We are now ready to make one of the legs, and will begin with one of the hind legs. Take one of the two longest wires, pass one end of it through the slit in the skin at the bottom of the foot, let it project three inches beyond the sole of the foot, and up into the skin of the leg. Now bend the wire until it fits closely along the under side of the leg bones as seen in the accompanying illustration. Tie it firmly with linen thread to the bones of the foot, to the tibia and the femur, as seen in the accompanying illustration.
[a]Fig. 25.]—Leg-making and Wiring.
Now take fine, clean tow, of good long fibre, and, beginning at the foot, proceed to wrap it around the leg bones, smoothly and evenly, to replace the muscles which have been cut away. The lower part of the leg is flat on the inside and round on the outside, almost bare of flesh at the ankle. Remember always that the flesh on the "calf" of the leg, and the forearm, lies behind the bones, swelling out toward the back and the inside of the limb, and in front the skin lies upon the bone itself. Observe this, and build up the muscles accordingly. The thigh is broad and much flattened, rounded on the outside only, as you must have noticed when you skinned it and cut off the flesh, and the knee-pan is prominent. To make the leg this shape, first wind some tow around the thigh bone, then make up a little roll of tow a little larger than your forefinger, place it along the under side of the thigh and wind it fast there with tow. By a judicious continuation of this process, you can make the thigh of the proper width and flatness both above and below the bone. At no point is a squirrel's thigh more than three-fourths of an inch thick, and the calf, the arm, and the forearm are even less. By reference to the tracing made of the animal in the flesh, you will be able to tell the width of the legs at all points and correct your work all the way along.
In all thin-haired animals the tendon of the heel must be made by drilling a hole through the end of the heel-bone, passing a small wire through for half its length, then twisting the wire together half-way up to the knee. Wind a little fine tow around this wire, gradually increasing the quantity from the heel upward until the false tendon is complete, and the upper end is wound in with the tow which forms the lower part of the thigh. In small mammals which have long, thick hair, as our squirrel for example, it is not necessary to make the tendon, as it does not show. Remember there is no flesh on the upper part of the foot-bones, but considerable underneath.
It is not best to make the legs extremely hard, or they will be difficult to bend, but at the same time the tow must not be put on in a loose, slovenly manner. Avoid making the legs too large; the opposite extreme is the lesser evil of the two.
When the leg is finished, anoint the skin of that leg with arsenical soap, rub either a little wet clay or thick soap over the tow leg so that it will slip into the skin easily, then turn the skin up over it and adjust it from the foot up. If the leg does not fit, turn the skin back and alter its shape until it does fit perfectly. This done satisfactorily, insert a little clay or finely chopped tow in the bottom of the foot, bend the wire so that it leaves the foot at a right angle, sew up the cut, and you are ready to proceed in like manner with the three remaining legs. Be sure to make both legs of each pair precisely alike if you wish to have a healthy-looking animal when finished.
Having made all the legs, the next thing is the tail. Take some of your finest tow in your right hand, the tail wire in your left, begin at the pointed end, and by turning the wire constantly from left to right, let it wind up the tow which runs between your right thumb and finger. Make the tail of a regular taper, perfectly smooth, and not too large. Try it in the skin occasionally to insure accuracy. If the first one is a failure, discard it and make another. When at last you have what is required, anoint the inside of the tail skin with arsenical soap, slip the false tail into its place, and if the tail has been slit open, sew it up neatly all the way along, commencing at the tip.
Now punch a small hole in the back of the skull a little above the occipital opening, pass the end of the body wire through it, force the end through into the nasal cavity and on out at the end of the nose. Let the end of the wire also pass through one of the nostrils of the skin for about two inches. Now put some soft clay on the sides of the skull and jaw to replace the muscles which have been cut away, and fill the orbits with the same material. Anoint the skin of the head and neck with the arsenical soap, turn it back over the skull, and when the skull is once more in its proper position in the skin, which can best be determined by noticing whether the eye opening comes over the centre of the orbit, drive a tack over each eye through the skin and into the bone.
Another tack at the top of the head will also do good service in holding the skull in its place while the grand struggle with the body is going on, for the head is the last thing finished. Life is too short and space too valuable to allow me to explain fully why all these things must be done, but if you neglect any of these simple directions you will very soon find out why they were given.