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The next thing to do is to support the wings in the position necessary to represent flight. For this purpose, point four wires sufficiently long to extend the wings, and to come through the body to be clenched.
Two of these wires should be of a size thinner than the other two.
Select the wing on the side of the body farthest from the cut, and enter the point of one of the thickest wires in the wing at the end of the part called the "metacarpus" (i, Plate II); push it gently along between the bone and the skin--meanwhile holding the wing with the left-hand fingers--along the side of or between the "radius and ulna,"
finally pus.h.i.+ng it into the body at the shoulder, and clenching it when it comes through, which it should do under the opposite wing at the cut. It is often very difficult or impossible to get the wire to go through the "carpus;" it will suffice, therefore, if, after coming along the metacarpus, it just misses the carpus and enters the skin again at the junction of the radius and ulna. If properly managed, the wire will be snugly hidden in the skin of the wing by the feathers of the parts along which it has travelled.
Do likewise with the other wing, but this wire often cannot be carried right through to the opposite side, and must therefore be firmly secured in the body on its own side; next fix the legs in the manner before detailed, or, as the bird is to be represented on flight, the wires need only be entered at the tibia-tarsal joint (q, Plate II).
Push a wire in the tail, and sew up the incision under the wing.
The bird has now its wings, legs, and tail fixed, and the free end of the supporting wire is sticking out from under the wing. Fix this wire firmly through the top of a narrow strip of board at such a distance as to miss the outspread wing; let this board also be long enough to allow of one end being fixed in a vice or screwed to the edge of a table, whilst the hawk or other bird clears its surface. The bird being now "shaped up" a little, take the two thinnest wires and enter the point of one in each wing at the end of the fleshy part of the wing (really the bird's middle finger), or through the base of the first quill, an inch or so from the other wire. This last wire travels along the outside of the feathers under the wing, and is consequently not hidden at all when pushed into the body: its use is to curve the wing upon it into a graceful shape, and when the bird is sufficiently dry it is pulled out, the first wire at the shoulder being quite sufficient to bear up the wing when set.
As, however, the wing feathers start up here and there, and do not readily conform to all the curves of the wires, the wiring and binding must be supplemented by "braces," which are narrow strips of cardboard pinned in pairs at intervals below and above the wing, and held in position by pins running through both braces from the under to the upper surface. For explanation of this see Plate I (Frontispiece), a hawk properly "set up" and "bound" to represent it swooping on its prey.
Putty sometimes greases light-coloured skins around the eyes; it will be well, therefore, to insert in its stead a little "pipe" or modelling clay worked up stiff. (Clay will be treated of in a subsequent chapter. It will be found useful for the faces of some sea-birds and hawks, and indeed for the greater part of the body and legs of large birds. The Ca.s.sowary in the Leicester Museum has been worked up largely in this manner.)
Steel pins with black bead heads are first-rate helps to binding. They are sold in various lengths, and being long, sharp, and fine, quite supersede ordinary pins.
Audi alteram partem! Let us now take the evidence of Waterton:
"You will observe how beautifully the feathers of a bird are arranged; one falling over the other in nicest order, and that, where this charming harmony is interrupted, the defeat, though not noticed by an ordinary spectator, will appear immediately to the eye of a naturalist. Thus, a bird not wounded, and in perfect feather, must be procured, if possible, for the loss of feathers can seldom be made good; and where the deficiency is great all the skill of the artist will avail him little in his attempt to conceal the defect; because, in order to hide it, he must contract the skin, bring down the upper feathers and shove in the lower ones, which would throw all the surrounding parts into contortion.
You will also observe that the whole of the skin does not produce feathers, and that it is very tender where the feathers do not grow.
The bare parts are admirably formed for expansion about the throat and stomach, and they fit into the different cavities of the body at the wings, shoulder, rump, and thighs, with wonderful exactness, so that in stuffing the bird, if you make an even rotund surface of the skin, where the cavities existed, in lieu of re-forming them, all symmetry, order, and proportion are lost for ever.
You must lay it down as an absolute rule that the bird is to be entirely skinned, otherwise you can never succeed in forming a true and pleasing specimen.
You will allow this to be just, after reflecting a moment on the nature of the fleshy parts and tendons, which are often left in.
First, they require to be well seasoned with aromatic spices; secondly, they must be put into the oven to dry; thirdly, the heat of the fire, and the natural tendency all cured flesh has to shrink and become hard, render the specimen withered, distorted, and too small; fourthly, the inside then becomes like a ham or any other dried meat.
Ere long the insects claim it as their own, the feathers begin to drop off, and you have the hideous spectacle of death in ragged plumage.
Wire is of no manner of use, but, on the contrary, a great nuisance, for, when it is introduced, a disagreeable stiffness and disarrangement of symmetry follow.
The head and neck can be placed in any att.i.tude; the body supported, the wings closed, extended, or elevated; the tail depressed, raised, or expanded; the thighs set horizontal, or oblique, without any aid from wire. Cotton will effect all this.
A very small proportion of the skull bone--say from the fore part of the eyes to the bill--is to be left in, though even this is not absolutely necessary. Part of the wing bones, the jaw bones, and half the thigh bones remain. Everything else--flesh, fat, eyes, bones, brain and tendons--are all to be taken away.
While dissecting, it will be of use to keep in mind that, in taking off the skin from the body, by means of your fingers and a little knife, you must try to shove it, in lieu of pulling it, lest you stretch it.
That you must press as lightly as possible on the bird, and every now and then take a view of it, to see that the feathers are all right.
That, when you come to the head, you must take care that the body of the skin rests on your knee; for, if you allow it to dangle from your hand, its own weight will stretch it too much.
That throughout the whole operation, as fast as you detach the skin from the body you must put cotton immediately between the body and it, and this will effectually prevent any fat, blood, or moisture from coming in contact with the plumage. Here it may be observed that on the belly you find an inner skin which keeps the bowels in their place.
By a nice operation with the knife you can cut through the outer skin, and leave the inner skin whole. Attention to this will render your work very clean, so that, with a little care in other parts, you may skin a bird without even soiling your finger ends.
As you can seldom get a bird without shooting it, a line or two on this head will be necessary. If the bird be still alive, press it hard with your finger and thumb just behind the wings, and it will soon expire. Carry it by the legs, and then, the body being reversed, blood cannot escape down the plumage through the shot holes.
As blood will often have issued out before you have laid hold of the bird, find out the shot holes by dividing the feathers with your fingers and blowing on them, and then, with your penknife or the leaf of a tree, carefully remove the clotted blood, and put a little cotton in the hole. If, after all, the plumage has not escaped the marks of blood, or if it has imbibed slime from the ground, wash the part in water without soap, and keep gently agitating the feathers with your fingers till they are quite dry. Were you to wash them and leave them to dry by themselves they would have a very mean and shrivelled appearance.
In the act of skinning a bird you must either have it upon a table or upon your knee. Probably you will prefer your knee, because, when you cross one knee over the other, and have the bird upon the uppermost, you can raise it to your eye, or lower it at pleasure, by means of the foot on the ground, and then your knee will always move in unison with your body, by which much stooping will be avoided and la.s.situde prevented.
With these precautionary hints in mind, we will now proceed to dissect a bird. Supposing we take a hawk. The little birds will thank us with a song for his death, for he has oppressed them sorely; and in size he is just the thing. His skin is also pretty tough and the feathers adhere to it.
We will put close by us a little bottle of the solution of corrosive sublimate in alcohol, also a stick like a common knitting needle, and a handful or two of cotton.
Now fill the mouth and nostrils of the bird with cotton, and place it upon your knee on its back with its head pointing to your left shoulder. Take hold of the knife with your two first fingers and thumb, the edge upwards. You must not keep the point of the knife perpendicular to the body of the bird, because, were you to hold it so, you would cut the inner skin of the belly and thus let the bowels out. To avoid this, let your knife be parallel to the body, and then you will divide the outer skin with great ease.
Begin on the belly below the breastbone, and cut down the middle quite to the vent. This done, put the bird in any convenient position, and separate the skin from the body till you get at the middle joint of the thigh. Cut it through, and do no more there at present, except introducing cotton all the way on that side from the vent to the breastbone. Do exactly the same on the opposite side.
Now place the bird perpendicular, the breast resting on your knee, with its back towards you. Separate the skin from the body on each side at the vent, and never mind at present the part from the vent to the root of the tail. Bend the tail gently down to the back, and while your fingers and thumb are keeping down the detached parts of the skin on each side of the vent, cut quite across and deep till you see the backbone near the oil gland at the root of the tail. Sever the backbone at the joint, and then all the root of the tail together, with the oil gland dissected from the body. Apply plenty of cotton.
After this seize the end of the backbone with the finger and thumb, and now you can hold up the bird clear of your knee and turn it round and round as occasion requires.
While you are holding it thus, contrive, with the help of your other hand and knife, by cutting and shoving, to get the skin pushed up till you come to where the wings join on the body. Forget not to apply cotton; cut these joints through, add cotton, and gently push the skin over the head, cut out the roots of the ears, which lie very deep in the head, and continue skinning till you reach the middle of the eye; cut the nictating membrane quite through, otherwise you would tear the orbit of the eye; and after this nothing difficult intervenes to prevent your arriving at the root of the bill.
When this is effected cut away the body, leaving a little bit of skull, just as much as will reach to the fore-part of the eye, clean well the jaw bones, fasten a little cotton at the end of your stick, dip it into the solution, and touch the skull and corresponding parts of the skin, as you cannot well get at these places afterwards.
From the time of pus.h.i.+ng the skin over the head you are supposed to have had the bird resting upon your knee. Keep it there still, and with great caution and tenderness return the head through the inverted skin, and when you see the beak appearing pull it very gently till the head comes out unruffled and unstained.
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 s.p.a.ce 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 st.i.tches. 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 att.i.tude. Here, then, rests the sh.e.l.l 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 st.i.tch, 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 gla.s.s 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 st.i.tch cannot be observed, and thus you have the artificial eye in true proportion.
After this touch the bill, orbits, feet, and former oil-gland at the root of the tail with the solution, and then you have given to the hawk everything necessary, except att.i.tude and a proper degree of elasticity--two qualities very essential.
Procure any common ordinary box, fill one end of it about three-fourths up to the top with cotton, forming a sloping plane. Make a moderate hollow in it to receive the bird. Now take the hawk in your hands, and after putting the wings in order, place it in the cotton with its legs in a sitting posture. The head will fall down; never mind. Get a cork and run three pins into the end, just like a three-legged stool. Place it under the bird's bill, and run the needle, which you formerly fixed there, into the head of the cork.
This will support the bird's head admirably. If you wish to lengthen the neck, raise the cork by putting more cotton under it. If the head is to be brought forward, bring the cork nearer to the end of the box.
If it requires to be set backwards on the shoulders, move back the cork.
As in drying the back part of the neck will shrink more than the fore part, and thus throw the beak higher than you wish it to be--putting you in mind of a star-gazing horse--prevent this fault by tying a thread to the beak and fastening it to the end of the box with a pin or needle. If you choose to elevate the wings, do so, and support them with cotton; and should you wish to have them particularly high, apply a little stick under each wing, and fasten the ends of them to the side of the box with a little beeswax.
If you would have the tail expanded, reverse the order of the feathers, beginning from the two middle ones. When dry, replace them in their true order, and the tail will preserve for ever the expansion you have given it. Is the crest to be erect? Move the feathers in a contrary direction to that in which they lie for a day or two, and it will never fall down after.