You may now take the cotton out of the mouth. Cut away all the remaining flesh from the palate, and whatever may have remained at the under jaw.
Here is now before you the skin without loss of any feathers, and all the flesh, fat, and unclean bones out of it, except the middle joint of the wings, one bone of the thighs, and the fleshy root of the tail. The extreme point of the wing is very small, and has no flesh on it, comparatively speaking, so that it requires no attention except touching it with the solution from the outside. Take all the flesh from the remaining joint of the wing, and tie a thread about four inches long to the end of it, touch all with the solution, and put the wing bone back into its place. In baring this bone you must by no means pull the skin. You would have it to pieces beyond all doubt, for the ends of the long feathers are attached to the bone itself. You must push off the skin with your thumb and forefinger. Now skin the thigh, quite to the bone, cut away all flesh and tendons, and bare the bone, form an artificial thigh round it with cotton, apply the solution, and draw back the skin over the artificial thigh; the same to the other thigh.
Lastly, proceed to the tail, take out the inside of the oil gland, remove all the remaining flesh from the root till you see the ends of the tail feathers, give it the solution and replace it. Now take out all the cotton which you have been putting into the body from time to time to preserve the feathers from grease and stain.
Place the bird upon your knee, on its back, tie together the two threads which you had fastened to the ends of the wing joints, leaving exactly the same space betwixt them as your knowledge of anatomy informs you existed there when the bird was entire, hold the skin open with your finger and thumb, and apply the solution to every part of the inside. Neglect the head and neck at present; they are to receive it afterwards.
Fill the body moderately with cotton lest the feathers on the belly should be injured. Whilst you are about the following operation you must recollect that half of the thigh — or, in other words, one joint of the thigh bone — has been out away. Now, as this bone never moved perpendicular to the body, but, on the contrary, in an oblique direction, of course, as soon as it is cut off, the remaining part of the thigh and leg, having nothing to support them obliquely, must naturally fall to their perpendicular; hence the reason why the legs appear too long. To correct this, take your needle and thread, fasten the end round the bone inside, and then push the needle through the skin just opposite to it; look on the outside, and after finding the needle amongst the feathers, tack up the thigh under the wing with several strong stitches. This will shorten the thigh and render it quite capable of supporting the weight of the body without the help of wire.
This done take out every bit of cotton except the artificial thighs, and adjust the wing bones (which are connected by the thread) in the most even manner possible, so that one joint does not appear to be lower than the other, for unless they are quite equal the wings themselves will be unequal when you come to put them in their proper attitude. Here, then, rests the shell of the poor hawk ready to receive from your skill and judgment, the size, the shape, the features, and expression it bad ere death and your dissecting hand brought it to its present still and formless state. The cold hand of death stamps deep its mark upon the prostrate victim. When the heart ceases to beat and the blood no longer courses through the veins, the features collapse, and the whole frame seems to shrink within itself. If, then, you have formed your idea of the real appearance of the bird from a dead specimen you will be in error. With this in mind, and at the same time forming your specimen a trifle larger than life to make up for what it will lose in drying, you will reproduce a bird that will please you.
It is now time to introduce the cotton for an artificial body by means of the little stick like a knitting needle; and without any other aid or substance than that of this little stick and cotton your own genius must produce those swellings and cavities, that just proportion, that elegance and harmony of the whole, so much admired in animated nature, so little attended to in preserved specimens. After you have introduced the cotton, sew up the orifice you originally made in the belly, beginning at the vent. And from time to time, till you arrive at the last stitch, keep adding a little cotton in order that there may be no deficiency there. Lastly, dip your stick into the solution and put it down the throat three or four times in order that every part may receive it.
When the head and neck are filled with cotton quite to your liking, close the bill as in nature. A little bit of beeswax at the end of it will keep the mandibles in their proper place. A needle must be stuck into the lower mandible perpendicularly.
You will shortly see the use of it. Bring also the feet together by a pin, and then run a thread through the knees, by which you may draw them to each other as near as you judge proper. Nothing now remains to be added but the eyes. With your little stick make a hollow in the cotton within the orbit, and introduce the glass eyes through the orbit; adjust the orbit to them as in nature, and that requires no other fastener.
Your close inspection of the eyes of animals will already have informed you that the orbit is capable of receiving a much larger body than that part of the eye which appears within it when in life, so that were you to proportion your eye to the size the orbit is capable of receiving it would be far too large. Inattention to this has caused the eyes of every specimen in the best cabinets of natural history to be out of all proportion. To prevent this, contract the orbit, by means of a very small delicate needle and thread, at that part of it farthest from the beak. This may be done with such nicety that the stitch cannot be observed, and thus you have the artificial eye in true proportion.