THE CHASE AND MANNER OF COLLECTING ANIMALS.
QUADRUPEDS AND BIRDS.
It is hardly necessary to recommend a double-barrelled gun. One of the barrels should be loaded with small shot or dross of lead for small birds and the other with large shot. These should have much less powder than an ordinary charge, so as not to tear and injure the animals. Paper, cotton or flax and powdered dry earthen ashes should form part of the naturalist’s stores.
When a bird is killed, a small quantity of dry dust is to be put on the wound. For this purpose the feathers must be raised with a pin, or a gun-picker, close to the wound. The bill of the bird should have a small quantity of cotton or flax introduced into it to prevent the blood from flowing and spoiling the plumage. The feathers must be all adjusted, and the bird then placed on the ground to allow the blood to coagulate. Every specimen should be placed in a piece of paper of the form of a hollow cone, like the thumb bags used by grocers. The head should be introduced into this, the paper should then be closed around the bird, and packed in a box filled with moss, dried grass or leaves.
Birds taken alive in nets and traps are to be preferred to others for stuffing, and also those caught by birdlime, which must be removed by spirits of wine.
Birds should always be skinned the same day they are killed, or next day at farthest, particularly in summer; as there is a danger of putrefaction ensuing, by which the feathers will fall off. However, in winter there is no danger for some days; but in tropical climates they must be prepared soon after they are killed. The same observations apply generally to quadrupeds.
Bats and owls are caught during the day, in the hollows of aged trees, in the crevices of walls, and ruins of buildings. These are animals which, it may be presumed, are still little known in consequence of their nocturnal habits.
Those who prepare for the chase, with the intention of preserving animals, should take care to provide themselves with implements necessary for fulfilling the objects advantageously. The articles most needed are one or two pairs of large pincers, scissors, forceps, scalpels, knives, needles, thread and a small hatchet, as well as one or more canisters of preserving powder, some pots of arsenical soap, or arsenical composition, and some bottles of spirits of turpentine. Cotton may be employed in stuffing the skins, and therefore a considerable quantity should always be taken along with the naturalist. In parts of Asia and Africa, where this cannot be procured, tow must be employed, or old ropes teazed down; and where even this cannot be found, dried grass and moss may be used. M. Le Vaillant used a species of dog-grass while in Africa, which is very abundant in that country; and it answered the purpose remarkably well.
It being supposed that a traveler has an ample caravan, provided with all the necessaries which we have pointed out, and having killed a quadruped, he will skin it immediately, according to the method which we have pointed out. He will then sew up the skin after receiving a partial stuffing, and having been anointed with the arsenical soap or composition. All the extremities must then be imbued with spirits of turpentine, and the skin should be placed in some convenient place to dry, so that it may have the advantage of complete exposure to the air. The turpentine must be again applied at the end of three or four days, more especially around the mouth of the quadruped.
It will be of the utmost advantage to remain a week or ten days at one place; by which means the naturalist will have had time to render himself somewhat acquainted with the animals which localize in that neighborhood. And as some species frequently confine themselves to a very limited spot, by leaving the place too hurriedly he is apt to overlook them.
After the traveler has determined on leaving his cantonment, he must see that all the objects he has collected are in a condition to be removed. He must examine carefully each specimen, and see that they have not been attacked by the destructive insects, so abundant in warm climates. Should flies have deposited their eggs in the lips of the quadrupeds or birds, these must be destroyed by spirits of turpentine. When a set of animals or birds are thoroughly dry, they should be packed in a box or case, which has been well joined.
A journal ought to be kept detailing all the circumstances connected with the animals, the places in which they were killed, and the color of their eyes, together with any information that can be procured of their habits from the natives. People are too apt to forget particulars when engaged in such varied pursuits, and the sooner they are committed to paper the better.
When the traveler arrives in Africa, he will meet with animals of the largest size, such as the elephant, the rhinoceros, hippopotamus, giraffe, quagga, urus, bubulus, condoma, as well as large antelope and deer. He will unquestionably find some difficulty in his endeavors to bring with him the skins of these animals, as in that country it is even troublesome, in many cases, to transport the necessaries of life. But the ardor of the zealous naturalist will here be increased by beholding such splendid specimens as he can never meet with elsewhere. All his energies will be strengthened and every sacrifice made to enable him to transport the fruits of his toils.
We need only to recur to the zeal manifested by Le Vaillant in his travels, and the rapturous delight experienced by him when he first beheld and killed the giraffe. He brought this large skin from Caffraria, where he killed the animal, a distance of two hundred leagues from the Cape of Good Hope.
Should the traveler, accidentally, or in pursuit of natural objects, find himself possessed of the carcase of one of these large and fine animals, he would deeply regret not being able to fetch away the skin from want of a knowledge how to separate it from the body. We shall, therefore, suppose that he has killed an animal the size of a bull. He must first make an incision under the belly, in the form of a double cross. The central line must reach from the chin to the anus; the two other transverse cuts must reach from one foot to the other. These are always made inside, so that the seams may be less conspicuous when the animal is mounted. When the skin is stuffed, the hoofs are detached by laying them on a stone, and striking them with a hatchet or mallet. The nails or hoofs must be left attached to the skin. After this, the skin is removed from the feet, legs, and thighs, and treated in other respects as pointed out in skinning other large animals. The bones of the head must be preserved if possible, leaving it attached at the muzzle only. All the muscles must be removed from the head, and the bones rendered as clean as possible.
As it is probable that an animal of this magnitude has been killed at a great distance from any habitation, there will not be an opportunity of macerating the hide in alum and water. The skin will also be too thick for the arsenical soap to penetrate with effect. Under these circumstances, the next best thing to preserve it is to take the ashes of a wood fire, and rub it well inside. The skin should then be stretched along the boughs of a tree, and allowed to dry. The skull, after it has been dried, must be returned into the skin, and the lips, ears, and feet imbued plentifully with turpentine, which operation must be several times repeated at intervals. Nothing is more effectual in preventing the attacks of insects than this spirit, and no larvæ will exist in places which it has touched.
The skin will be sufficiently dried within two or three days, so that the hair may be turned inwards. If some common salt can be procured, a solution of it should be made, and the hair rubbed with it. Both sides of the skin must be rubbed with this two or three times, at intervals of a day.
When sufficiently dry, the skin may be rolled up and packed. The hair ought to be inwards, with a layer of dried grass intervening, to prevent friction during conveyance. The operation of rolling up the skin must be begun at the head.
If the journey is long, the skin should be unrolled, and placed in the sun for a few hours, and the places liable to the attack of moths should be again rubbed with turpentine.
When a skin thus prepared has reached the place where it is to be put up, it must undergo a preparation previous to its being mounted. In the first place, it must be extended along the ground with the hair undermost, so that it may acquire fresh pliability, and those parts which remain stiff must be moistened with tepid water. The skin must then be placed in a large vessel of water saturated with alum, there to remain eight or ten days; after which, it must be extended on half rounded pieces of wood, and thinned with a sharp knife, which is facilitated by the projections of the wood, enabling the operator the more easily to cut it, while it is gradually shifted, till the whole has been pretty equally thinned. When this operation is completed, it is allowed to soak in water with an equal quantity of that saturated with the alum. Twenty-four hours will be sufficient.
In hunting for snakes, great caution must be exercised, as it is well known that the bite of some of these proves fatal within a quarter of an hour, particularly that of the rattlesnake and some others. Indeed, it would be more prudent to allow the natives to hunt for these poisonous reptiles, as they are better acquainted with their haunts, and the means of defense to be employed in this dangerous pursuit. They are also better acquainted with those which are poisonous. We may, however, remark, that the poisonous snakes have, in general, much larger heads than those which are harmless, and their necks are also narrow.
Shells. Shells, on account of the elegance and variety of their forms, and beauty of their colors, are objects much sought after, not only by naturalists but also by most persons who are unacquainted with science. There is no species, particularly in remote climes, which does not deserve to be brought home, the things most common in those countries being frequently the most rare in ours. Shells are found on every part of the surface of the globe. Some are inhabitants of the land, while others only frequent rivers, lakes, ponds, and ditches; and another and more numerous class live in the ocean. Land-shells are spread over the whole surface of the earth, and although more accessible, are perhaps less known than those which inhabit the “mighty deep.”
Land-Shells, for the most part, are to be found creeping abroad either in the evening or after a gentle shower of rain. During the heat of the day they retire to shaded retreats, under thick bushes, the crevices of rocks, the hollows of decayed trees, or under their bark; beneath stones, amongst moss, or in holes in the ground. A little experience will teach the naturalist readily to find their retreats.
Fresh Water Shells must be sought for, if in deep lakes, with a dredge, or if in shallow places, with a tin spoon fixed on the end of a stick. This is made of a circular piece of tin four inches and a half in diameter, beat concave, and then perforated with numerous small holes, not exceeding the sixteenth part of an inch in diameter; around this must be soldered a perpendicular rim three-quarters of an inch broad, and also perforated with holes. To this must be attached a hollow tubular handle three inches long, for the insertion of a walking-stick. It must have a few holes towards its outer end for passing a string through to tie it firmly and prevent it being lost. With this spoon the collector must rake along the mud at the bottom of ditches or ponds, and after bringing a quantity to the surface, he must wash the mud entirely away by shaking the spoon on the top of the water, and it will pass through the holes and leave the shells. The sharp edge of the spoon is also useful for detaching aquatic shells from the under surface of the leaves of water-plants.
The large swan-muscle (Anadonta Cygnea), and other ana-dons, generally lie deep in the mud, so that they cannot be procured by dredging. I found it necessary to invent a net to fish for these. This consisted of an iron triangle of twelve inches, with a hollow handle fixed on its base, and in this is inserted a pole of sufficient length to reach the bottom. It is firmly screwed to the handle. A net is attached to the triangle either of twine or hair-cloth. The point of the triangle should be sharp so that it may the more easily penetrate the mud, and it is drawn through it in situations where shells are supposed to exist.
Marine Shells. These are to be found in all seas; some of them inhabit rocks on the shore within high-water mark; others reside in deep water, and can only be taken by dredging, or by the use of a kind of net called in France the gangui, and an instrument called the rake has also been successfully used.
Different species of sea-weed are frequently covered by minute shells—weeds should always be carefully examined. Many of the smaller and microscopic shells are found at high-water mark among the fine dross and drifted fragments of shells; this sand should be brought home and examined at leisure. To facilitate the process a small wire-cloth sieve should be made of about six or seven inches square and all the sand sifted through it and the shells left.
Molluscous Animals. Many species of worms and other soft, invertebrate animals are to be caught also by the dredge. There is no way of preserving these animals except by putting them in spirits. Animals of this kind are still very imperfectly known, notwithstanding the researches of Lamarck, Poli, and other celebrated naturalists. Every opportunity should, therefore, be embraced of bringing them home; indeed, we are still little acquainted with those which inhabit our own seas.
When animals of this kind are procured in foreign parts a careful noting of the latitude should be taken; and it should be stated whether they live singly or are congregated, if they are phosphorescent, and if they were taken in deep water. And as these animals are very liable to lose their colors by being put in spirits, a careful noting of these should be taken whenever they are caught, as the colors are very evanescent; or, what would be still better, a drawing of the animal should be made.
Intestinal Worms. Whenever we have killed either a quadruped, bird, or fish, we should carefully examine the stomach and intestinal canal of the animal to see if there are any worms; indeed, there are few animals without them; they must also be preserved in spirits. Besides the stomach and intestines, worms are also found in the livers and other parts of the body; also in the back of Skates and various fishes.
INSECTS.
This class is subject to infinite variety, according to climate and soil. The entomologist, or the mere collector, must not confine himself to those whose beauty of coloring renders them attractive, but collect all that come in the way. Those species which have wings, and fly around plants, we take by means of gauze nets, and also those which swim in the water. Those which live on putrid substances, and such as are disagreeable to the touch, are seized with pincers; they are first put into camphorated spirits to render them clean. Trees are the habitations of innumerable insects; many of them skulk under the old rotten bark, and others attach themselves to the foliage. A cloth should be spread under the trees, or an umbrella, and the branches shaken with considerable force, when they will fall down, and may then be caught.
Insects are killed by making a crow-quill into a long point and dipping it into prussic acid; an incision with it may be made immediately below the head of the insect betwixt the shoulders, which usually produces instant death. But this acid must be used with much caution, because its effects are almost as instantaneous and fatal in the human subject as in the lower animals. When cork cannot be had for lining the bottoms of the boxes, a layer of beeswax may be used in its stead. The pin should be deeply sunk in this substance, as it is more liable to loosen than when in cork.
It is of much importance to procure the caterpillar as well as the insect, and, in this case, some of the leaves on which it feeds should be placed in a box beside it, so that it may reach maturity. A small perforation should be made in the box for the admission of air.
Every kind of insect, except butterflies, sphinges, and moths, may be preserved in bottles of spirits, which will not injure them; when they are taken out they are immediately placed in the position in which it is wished to preserve them, and they are then allowed to dry. Another mode of preserving coleopterous insects, such as beetles, etc., is to put them in a dry box amongst fine sand. A row of insects is placed in a layer of sand, and then a new layer of about an inch in depth laid on the top, and so on till the box is filled. This mode of packing will not, however, do with soft insects and those having fine wings.
It is extremely desirable that all the different kinds of Spiders should be caught, particularly those said to be venomous; also termites, or white ants, the different scolopendra, and gaily worms, etc. The nests of spiders and other insects should also be sent home; in short, every insect which is remarkable, in any way, either for its history or properties.
It is also of much importance to bring specimens of the plants on which they feed; these should be dried, and their localities marked, the kind of soil on which they grow, and the situations, whether moist or dry, should be noted.
BRITISH INSECTS.
Woods, Hedges, and Lanes. By far the greatest portion of insects are found in these situations. In woods, the entomologist must beat the branches of the trees into his folding net, and must select for this purpose the open paths, skirts, etc. The trunks of trees, gates, and timber which is cut down, should be carefully examined, and a great many lepidopterous and coleopterous insects are found in these situations, and in no other. In hedges and lanes, many of the most valuable and beautiful insects are found, as also in nettles and other plants which grow under them; these should be well beat, but more especially when the white thorn blossoms in the months of May and June. Hedges where the roads are dusty are very seldom productive.
Heaths and Commons. Many insects are peculiar to these situations from the plants which grow on them, as well as from the dung of cattle, by which many of them are frequented, in the latter of which many thousands of insects may be found in a single day, in the months of April and May. These are principally of the Order Coleoptera.
Sand Pits. These are favorable for the propagation of Capris lunarius, Noloxus monoceros, Lixus sulcirostris and other rare insects. Minute species are found abundantly at the roots of grass.
Meadows, Marshes and Ponds. In meadows, when the ranunculi or buttercups are in blossom, many Muscæ and dipterous insects generally abound. The flag-rushes are the habitations of Cassida, Donacina and others. Drills in marshes should be examined, as many species of insects are found on long grass. The larvæ of various lepidoptera and neuroptera are confined to these situations, more especially if hedges and trees are near the spot. Ponds are rich in microscopic insects. These are obtained by means of the landing net, which, for this purpose, need not be so long as represented in Fig. 26, and should be made of pretty thick cotton cloth, but sufficiently thin to allow the water to escape. The mud, which is brought up from the bottom of ponds and ditches, should be examined, and what small insects are found may be put in a small phial filled with water, which will not only clean them but keep them alive; and in many instances the naturalist will be surprised, upon the examination of these, the most wonderful productions of nature.
Moss, Decayed Trees, Roots of Grass, Etc. Many insects will be found in moss and under it; the roots and wood of decayed trees afford nourishment and a habitation to a number of insects; many of the larvæ of Lepidoptera penetrate the trunks of trees in all directions; most of the cerambyces feed on wood, as well as some species of Carabidæ Elateridæ, etc. In seeking for these it is necessary to use the digger. It is sometimes requisite to dig six or seven inches into the wood before they are found.
Banks of Ponds and Roots of Grass. These are a never-failing source of collecting, which may be followed at all seasons of the year, and in general with great success; those banks are to be preferred which have the morning or noon-day sun.
Banks of Rivers, Sandy Sea Shore, Etc. These situations afford a great variety of Coleoptera, Crustacæ, etc. The dead carcases of animals thrown on the shore should be examined, as they are the receptacles and food of Silphiodæ, Staphilinidæ, etc. May and June are the best seasons for collecting these insects.
Dead Animals and Dried Bones should be constantly examined, for these are the natural habitats of several insects. It is not uncommon for country people to hang dead moles on bushes; under these the entomologist should place his net, and shake the boughs on which they are hung, as many of the coleoptera generally inhabit these.
Fungi and Flowers. These are the constant abode of insects, and many curious species will be found on them. It is a mistaken idea that insects are only to be found in summer, as they are to be met with, either in a living or pupa state, at all seasons. Dried moss, beneath the bark of trees and under stones are extremely likely places to find insects in winter; and even then the entomologist is more likely to procure some of the rare species than in summer, as these are ranging in search of food and in situations hidden from view.
At this season, if the weather is mild, the pupæ of Lepidoptera will be found at the roots of trees, more especially those of the elm, oak, lime, etc., or beneath the underwood, close to the trees, and these frequently at the depth of some inches under the ground.
In the months of June, July and August the woods are the best places to search for insects. Most of the butterflies are taken in those months, flying about in the daytime only. Moths are either found at break of day or at twilight in the evening. The following method of taking moths is pointed out by Haworth, in speaking of the Oak Moth (Bombyx Quercus). “It is a frequent practice with the London Aurelians,” says he, “when they breed a female of this and some other day-flying species, to take her, whilst yet a virgin, into the vicinity of woods, where, if the weather is favorable, she never fails to attract a numerous train of males, whose only business seems to be an incessant, rapid and undulating flight in search of their unimpregnated females, one of which is no sooner perceived than they become so much enamored of their fair and chaste relation as absolutely to lose all kinds of fear for their own personal safety, which, at other times, is effectually secured by the reiterated evolutions of their strong and rapid wings. So fearless, indeed, have I beheld them on these occasions as to climb up and down the sides of a cage which contained the dear object of their eager pursuit in exactly the same hurrying manner as honeybees, which have lost themselves, climb up and down the glasses of a window.”