CURIOSITIES RESPECTING INSECTS.—(Continued.)
Wild Bees.
The Clothier Bee.—The Carpenter Bee.—The Mason Bee.—The Upholsterer Bee.—The Leaf-cutter Bee.—Curious Account of an Idiot Boy and Bees.—Mr. Wildman’s Curious Exhibitions of Bees explained.
The Clothier Bee.—The Carpenter Bee.—The Mason Bee.—The Upholsterer Bee.—The Leaf-cutter Bee.—Curious Account of an Idiot Boy and Bees.—Mr. Wildman’s Curious Exhibitions of Bees explained.
The Clothier Bee.
Learn each small people’s genius, policies,The ants’ republic, and the realm of bees;How those in common all their wealth bestowAnd anarchy without confusion know;And these for ever, though a monarch reign,Their separate cells and properties maintain.Mark what unvary’d laws preserve each state,Laws, wise as Nature, and as fixt as Fate.Pope.
The following curious account of wild bees is principally abridged from Kirby and Spence’s very interesting work on entomology.
The clothier bee is a lively and gay insect. It does not excavate holes for their reception, but places them in the cavities of old trees, or of any other object that suits its purpose. Sir Thomas Cullum discovered the nest of one in the inside of the lock of a garden gate, in which Mr. Kirby alsosince twice found them. It should seem, however, that such situations would be too cold for the grubs without a coating of some non-conducting substance. The parent bee, therefore, after having constructed the cells, laid an egg in each, and filled them with a store of suitable food, plasters them with a covering of vermiform masses, apparently composed of honey and pollen; and having done this, aware (long before Count Rumford’s experiments) what materials conduct heat most slowly, she attacks the woolly leaves of Stachy’s lanata, Agrostemma coronaria, and similar plants, and with her mandibles industriously scrapes off the wool, which with her fore legs she rolls into a little ball, and carries to her nest. This wool she sticks upon the plaster that covers her cells, and thus closely envelopes them with a warm coating of down, impervious to every change of temperature.
The Carpenter Bee.—A numerous family of wild bees may properly be compared to carpenters, boring with incredible labour, out of the solid wood, long cylindrical tubes, and dividing them into various cells. Amongst these, one of the most remarkable is the Apis violacea, L. (Xylacopa, Latr.) a large species, a native of southern Europe, distinguished by beautiful wings of a deep violet colour, and found commonly in gardens, in the upright putrescent espaliers, or vine props, of which, and occasionally in the garden seats, doors, and window-shutters, she makes her nest. In the beginning of spring, after repeated and careful surveys, she fixes upon a piece of wood suitable for her purpose, and with her strong mandibles begins the process of boring. First proceeding obliquely downwards, she soon points her course in a direction parallel with the sides of the wood, and at length with unwearied exertion forms a cylindrical hole or tunnel not less than twelve or fifteen inches long, and half an inch broad. Sometimes, where the diameter will admit of it, three or four of these pipes, nearly parallel with each other, are bored in the same piece. Herculean as this task (which is the labour of several days) appears, it is but a small part of what our industrious bee cheerfully undertakes. As yet she has completed, but the shell of the destined habitation of her offspring; each of which, to the number of ten or twelve, will require a separate and distinct apartment. In excavating her tunnel, she has detached a large quantity of fibres, which lie on the ground like a heap of saw-dust. This material supplies all her wants. Having deposited an egg at the bottom of the cylinder, along with the requisite store of pollen and honey, she next, at the height of about three-quarters of an inch, (which is the depth of each cell,) constructs of particles of the saw-dust glued together, and also to the sides ofthe tunnel, what may be called an annular stage or scaffolding. When this is sufficiently hardened, its interior edge affords support for a second ring of the same materials, and thus the ceiling is gradually formed of these concentric circles, till there remains only a small orifice in its centre, which is also closed with a circular mass of agglutinated particles of saw-dust. When this partition, which serves as the ceiling of the first cell, and the flooring of the second, is finished, it is about the thickness of a crown piece, and exhibits the appearance of as many concentric circles as the animal has made pauses in her labour. One cell being finished, she proceeds to another, which she furnishes and completes in the same manner, and so on, until she has divided her whole tunnel into ten or twelve apartments.
Such a laborious undertaking as the constructing and furnishing these cells, cannot be the work of one, or even of two days. Considering that every cell requires a store of honey and pollen, not to be collected but with long toil, and that a considerable interval must be spent in agglutinating the floors of each, it will be very obvious that the last egg in the last cell must be laid many days after the first. We are certain, therefore, that the first egg will become a grub, and consequently a perfect bee, many days before the last. What then becomes of it? It is impossible that it should make its escape through eleven superincumbent cells, without destroying the immature tenants; and it seems equally impossible that it should remain patiently in confinement below them until they are all disclosed. This dilemma our heaven-taught architect has provided against. With forethought, never enough to be admired, she has not constructed her tunnel with one opening only, but at the farther end has pierced another orifice, a kind of back door, through which the insects produced by the first-laid eggs successively emerge into day. In fact, all the young bees, even the uppermost, go out by this road; for, by an exquisite instinct, each grub, when about to become a pupa, places itself in its cell, with its head downwards, and thus is necessitated, when arrived at its last state, to pierce its cell in this direction.
We shall now describeThe Mason-Bee.—There is a family of wild bees which carry on the trade of masons, building their solid houses solely of artificial stone. The first step of the mother bee,Apis mururia, Oliv.(Anthophara, F. Megachile, Latr.) is to fix upon a proper situation for the future mansion of her offspring. For this she usually selects an angle, sheltered by any projection, on the south side of a stone wall. Her next care is to provide materials for the structure. The chief of these is sand, which she carefully selects, grain bygrain, from such as contain some mixture of earth; these grains she glues together with her viscid saliva into masses the size of small shot,[10]and transports by means of her jaws to the site of her castle. With a number of these masses, which are the artificial stone of which her building is to be composed, united by a cement preferable to ours, she first forms the basis or foundation of the whole. Next she raises the walls of a cell, which is an inch long and half an inch broad, and, before its orifice is closed, in form resembles a thimble. This, after depositing an egg, and a supply of honey and pollen, she covers in, and then proceeds to the erection of a second, which she finishes in the same manner, until the whole number, which varies from four to eight, is completed. The vacuities between the cells, which are not placed in any regular order, some being parallel to the wall, others being perpendicular to it, and others inclined to it at different angles, this laborious architect fills up with the same material of which the cells are composed, and then bestows upon the whole group a common covering of coarser grains of sand. The form of the whole nest, which, when finished, is a solid mass of stone, so hard as not to be easily penetrated with the blade of a knife, is an irregular oblong, of the same colour as the sand, and, to a casual observer, more resembling a splash of mud than an artificial structure. These bees sometimes are more economical of their labour, and repair old nests, for the possession of which they have very desperate combats. One would have supposed that the inhabitants of a castle so fortified might defy the attack of an insect marauder. Yet an ichneumon, and a beetle (Clerius apiarius, F.) both contrive to introduce their eggs into the cells, and the larvæ proceeding from them devour their inhabitants.—Reaum.vi. 57, 58.Mon. Ap. Angl.i. 179.
Other bees of the same family use different materials in the construction of their nests. Some employ fine earth made into a kind of mortar made with gluten. Another, (A. cœrulescens, L.) as we learn from De Geer, forms its nest of argillaceous earth, mixed with chalk, upon stone walls, and sometimes probably builds in chalk-pits.Apis bicornis, L.selects the hollows of large stones for the site of its dwelling; whilst others prefer the holes in wood.
We now proceed toThe Upholsterer-Bee.—Such may those be denominated which line the holes excavated in the earth for the reception of their young, with an elegant coatingof flowers or of leaves. Amongst the most interesting of these isApis Papaveris, (Megachile, Latr., Anthophora, F.) a species whose manners have been admirably described by Reaumur. This little bee, as though fascinated with the colour most attractive to our eyes, invariably chooses for the hangings of her apartments the most brilliant scarlet, selecting for its material the petals of the wild poppy, which she dexterously cuts into the proper form. Her first process is to excavate in some pathway a burrow, cylindrical at the entrance, but swelled out below, to the depth of about three inches. Having polished the walls of this little apartment, she next flies to a neighbouring field, cuts out oval portions of the flowers of poppies, seizes them between her legs, and returns with them to her cell; and though separated from the wrinkled petal of a half-expanded flower, she knows how to straighten their folds, and, if too large, to fit them for her purpose by cutting off the superfluous parts. Beginning at the bottom, she overlays the walls of her mansion with this brilliant tapestry, extending it also on the surface of the ground round the margin of the orifice. The bottom is rendered warm by three or four coats, and the sides have never less than two. The little upholsterer, having completed the hangings of her apartment, next fills it with pollen and honey to the height of about half an inch; then, after committing an egg to it, she wraps over the poppy lining, so that even the roof may leave this material; and lastly, closes its mouth with a small hillock of earth.—Reaum.6. 139 to 148. The great depth of the cell, compared with the space which the single egg and the accompanying food deposited in it occupy, deserves particular notice. This is not more than half an inch at the bottom, the remaining two inches and a half being subsequently filled with earth.
The Leaf-cutter Bee.—There is a species of wild bee, that cover the walls of their cells with coatings of sober-coloured materials, generally selecting for their hangings the leaves of trees, especially of the rose, whence they have been known by the name of the leaf-cutter bees. They differ also fromA. Papaverisin excavating longer burrows, and filling them with several thimble-shaped cells, composed of portions of leaves so curiously convoluted, that, if we were ignorant in what school they have been taught to construct them, we should never credit their being the work of an insect. Their entertaining history, so long ago as 1670, attracted the attention of our countrymen, Ray, Lister, Willoughby, and Sir Edw. King; but we are indebted for the most complete account of the procedure, to Reaumur.
The mother bee first excavates a cylindrical hole eight or ten inches long, in a horizontal direction, either in theground or in the trunk of a rotten willow-tree, or occasionally in other decaying wood. This cavity she fills with six or seven cells, wholly composed of portions of leaf in the shape of a thimble, the convex end of one closely fitting into the open end of another. Her first process is to form the exterior coating, which is composed of three or four pieces, of larger dimensions than the rest, and of an oval form. The second coating is formed of portions of equal size, narrow at one end, but gradually widening towards the other, where the width equals half the length. One side of these pieces is the serrate margin of the leaf from which it was taken, which, as the pieces are made to lap one over the other, is kept on the outside, and that which has been cut within. The little animal now forms a third coating of similar materials, the middle of which, as the most skilful workman would do in similar circumstances, she places over the margins of those that form the first tube, thus covering and strengthening the junctures. Repeating the same process, she gives a fourth and sometimes a fifth coating to her nest, taking care, at the closed end or narrow extremity of the cell, to bend the leaves so as to form a convex termination. Having thus finished a cell, her next business is to fill it, to within half a line of the orifice, with a rose-coloured conserve, composed of honey and pollen, usually collected from the flowers of thistles; and then having deposited her egg, she closes the orifice with three pieces of leaf so exactly circular, that a pair of compasses could not define their margin with more truth, and coinciding so precisely with the walls of the cell, as to be retained in their situation merely by the nicety of their adaptation. After this covering is fitted in, there remains still a concavity, which receives the convex end of the succeeding cell; and in this manner the indefatigable little animal proceeds until she has completed the six or seven cells composing her cylinder.
The process which one of these bees employs in cutting the pieces of leaf that compose her nest, is worthy of attention. Nothing can be more expeditious; she is not longer about it than we should be with a pair of scissors. After hovering for some moments over a rose bush, as if to reconnoitre the ground, the bee alights upon the leaf which she has selected, usually taking her station upon its edge, so that the margin passes between her legs. With her strong mandibles she cuts without intermission in a curve line, so as to detach a triangular portion. When this hangs by the last fibre, lest its weight should carry her to the ground, she balances her little wings for flight, and the very moment it parts from the leaf, flies off with it in triumph; the detached portion remaining bent between her legs in a direction perpendicular to her body. Thus without rule or compasses do these diminutive creaturesmete out the materials of their work into portions of an ellipse, into ovals or circles, accurately accommodating the dimensions of the several pieces of each figure to each other. What other architect could carry impressed upon the tablet of his memory the entire idea of the edifice which he has to erect, and, destitute of square or plumb-line, cut out his materials in their exact dimensions without making a single mistake? Yet this is what our little bee invariably does. So far are human art and reason excelled by the teaching of the Almighty.—Reaum.vi. 971-94.Mor. Ap. Angl.i. 157.Apisc. 2.
A curious Account of an Idiot Boy, and Bees.—Mr. White has given the following curious account of an idiot boy. From a child he shewed a strong propensity to bees. They were his food, his amusement, his sole object. In the winter he dozed away his time in his father’s house, by the fire-side, in a torpid state, seldom leaving the chimney-corner: but in summer he was all alert, and in quest of his game. Hive-bees, humble-bees, and wasps, were his prey, wherever he found them. He had no apprehension from their stings, but would seize them with naked hands, and at once disarm them of their weapons, and suck their bodies for the sake of their honey-bags. Sometimes he would fill his bosom between his shirt and skin with these insects; and sometimes he endeavoured to confine them in bottles. He was very injurious to men that kept bees, for he would glide into their bee-gardens, and, sitting down before the stools, would rap with his fingers, and so take the bees as they came out. He has even been known to overturn the hives for the sake of the honey, of which he was passionately fond. Where metheglin was making, he would linger round the tubs and vessels, begging a draught of what he called bee-wine. As he ran about, he used to make a humming noise with his lips, resembling the buzzing of bees. This lad was lean and sallow, and of a cadaverous complexion; and, except in his favourite pursuit, in which he was wonderfully adroit, discovered no manner of understanding. Had his capacity been better, and directed to the same object, he had perhaps abated much of our wonder at the feats of a more modern exhibiter of bees; and we may justly say of him now,
——————————ThouHad thy presiding star propitiousShouldst Wildman be.White’s Natural History.
We conclude this chapter with an explanation of the preceding lines.
Mr. Wildman’s curious Exhibitions of Bees.—Mr. Wildman, by his dexterity in the management of bees, someyears ago, surprised the whole kingdom. He caused swarms to light where he pleased, almost instantaneously; he ordered them to settle on his head, then removed them to his hand, and commanded them to settle on a window, table, &c. at pleasure. We subjoin the method of performing these feats, in his own words: “Long experience has taught me, that as soon as I turn up a hive, and give it some taps on the sides and bottom, the queen immediately appears, to know the cause of this alarm; but soon retires again among her people. Being accustomed to see her so often, I readily perceive her at first glance; and long practice has enabled me to seize her instantly, with a tenderness that does not in the least endanger her person. This is of the utmost importance; for the least injury done to her brings immediate destruction to the hive, if you have not a spare queen to put in her place, as I have too often experienced in my first attempts. When possessed of her, I can, without injury to her, or exciting that degree of resentment that may tempt her to sting me, slip her into my other hand, and, returning the hive to its place, hold her there, till the bees missing her, are all on wing, and in the utmost confusion. When the bees are thus distressed, I place the queen wherever I would have the bees to settle. The moment a few of them discover her, they give notice to those near them, and those to the rest; the knowledge of which becomes so general, that in a few minutes they all collect themselves round her, and are so happy in having recovered this sole support of their state, that they will long remain quiet in their situation: nay, the scent of her body is so attractive of them, that the slightest touch of her along any place or substance, will attach the bees to it, and induce them to any path she takes.”—This was the only witchcraft used by Mr. Wildman, and is that alone which is practised by others, who have since made similar exhibitions.
CURIOSITIES RESPECTING INSECTS.—(Continued.)
The Wasp.
For the following account of theWasp, we are indebted to Kirby and Spence; and we take this opportunity of making a general acknowledgment of our obligations to those gentlemen, for the assistance we have derived from their highly interesting treatise, in drawing up this account of the curiosities respecting insects.
Compared with hive-bees, wasps may be considered as a horde of thieves and brigands: while the bees are peaceful, honest, and industrious subjects; the wasps attack their persons, and plunder their property. Yet, with all this love of pillage and other bad propensities, they are not altogether disagreeable or unamiable; they are brisk and lively; they do not usually attack unprovoked; and their object in plundering us is not purely selfish, but is principally to provide for the support of the young brood of their colonies.
The societies of wasps, like those of ants, and other socialHymenoptera, consist of females, males, and workers. The females may be considered as of two sorts: first, the females, by way of eminence, are much larger than any other individuals of the community; they equal six of the workers (from which in other respects they do not materially differ) in weight, and lay both male and female eggs: then the small females, not larger than the workers, which lay only male eggs. This last description of females, which are found also both amongst the humble-bees and hive-bees, were first observed among wasps, by M. Perrot, a friend of Huber’s. The large females are produced later than the workers, and make their appearance in the next spring; and whoever then destroys one of them, destroys an entire colony, of which she would be the founder.
Different from the queen-bee, the female wasp is at first an insulated being, that has had the fortune to survive the rigoursof winter. When in the spring she lays the foundation of her future empire, she has not a single worker at her disposal; with her own hands and teeth she often hollows out a cave wherein she may lay the first foundations of her paper metropolis: she must herself build the first houses, and produce from her own body their first inhabitants; which in their infant state she must feed and educate, before they can assist her in her great design. At length she receives the reward of her perseverance and labour; and from being a solitary unconnected individual, in the autumn is enabled to rival the queen of the hive in the number of her children and subjects, and in the edifices which they inhabit—the number of cells in a vespiary sometimes amounting to more than sixteen thousand, almost all of which contain either an egg, a grub, or a pupa, and each cell serving for three generations in a year; which, after making every allowance for failures and other casualties, will give a population of at least thirty thousand. Even at this time, when she has so numerous an army of coadjutors, the industry of this creature does not cease, but she continues to set an example of diligence to the rest of the community. If by any accident, before the other females are hatched, the queen-mother perishes, the neuters cease their labours, lose their instincts, and die.
The number of females in a populous vespiary is considerable, amounting to several hundreds; they emerge from the pupa about the latter end of August, at the same time with the males, and fly in September and October, when they pair. Of this large number of females, very few survive the winter. Those that are so fortunate, remain torpid till the vernal sun recalls them to life and action. They then fly forth, collect provision for their young brood, and are engaged in the other labours necessary for laying the foundation of their empire; but in the summer months they are never seen out of the nest.
The male wasps are much smaller than the female, but they weigh as much as two workers. Their antennæ are longer than those of either, not, like theirs, thicker at the end, but perfectly filiform; and their abdomen is distinguished by an additional segment. Their numbers about equal those of the females, and they are produced at the same time. They are not so wholly given to pleasure and idleness as the drones of the hive. They do not, indeed, assist in building the nest, and in the care of the young brood; but they are the scavengers of the community, for they sweep the passages and streets, and carry off all the filth. They also remove the bodies of the dead, which are sometimes heavy burdens for them; in which case two unite their strength, to accomplish the work; or, if a partner be not at hand, the wasp thus employed cuts off thehead of the defunct, and so effects its purpose. As they make themselves so useful, they are not, like the male bees, devoted by the workers to an universal massacre when the great end of their creation is answered; but they share the general lot of the community, and are suffered to survive till the cold cuts off them and the workers together.
The workers are the most numerous, and to us the only troublesome part of the community; upon whom devolves the main business of the nest. In the summer and autumnal months they go forth by myriads into the neighbouring country to collect provisions; and on their return to the common den, after reserving a sufficiency for the nutriment of the young brood, they divide the spoil with great impartiality; part being given to the females, part to the males, and part to those workers that have been engaged in extending and fortifying the vespiary. This division is voluntarily made, without the slightest symptom of compulsion. Several wasps assemble round each of the returning workers, and receive their respective portions. It is curious and interesting to observe their motions on this occasion. As soon as a wasp that has been filling itself with the juice of fruits arrives at the nest, it perches upon the top, and, disgorging a drop of its saccharine fluid, is attended sometimes by two at once, who share the treasure; this being thus distributed, a second, and sometimes a third drop, is produced, which falls to the lot of others.
Wasps, though ferocious and cruel towards their fellow-insects, are civilized and polished in their intercourse with each other, and form a community whose architectural labours will not suffer on comparison even with those of the peaceful inhabitants of a bee-hive. Like these, the great object of their industry is the erection of a structure for their beloved progeny, towards which they discover the greatest affection and tenderness, and, like bees, construct combs consisting of hexagonal cells for their reception; but the substance which they make use of is very dissimilar to the wax employed by bees, and the general plan of their city differs in many respects from that of a bee-hive. The common wasp’s nest, usually situated in a cavity under ground, is of an oval figure, about sixteen or eighteen inches long, by twelve or thirteen broad. Externally, it is surrounded by a thick coating of numerous leaves of a sort of grayish paper, which do not touch each other, but have a small interval between each, so that if the rain should chance to penetrate one or two of them, its progress is speedily arrested. On removing this external covering, we perceive that the interior consists of from twelve to sixteen circular combs of different sizes, not ranged vertically, as in a bee-hive, but horizontally, so as to form so many distinct and parallelstories. Each comb is composed of a numerous assembiage of hexagonal cells, formed of the same paper-like substance as the exterior covering of the nest, and, according to a discovery of Dr. Barclay, each, as in those of bees, a distinct cell, the partition walls being double.—Memoirs of the Wernerian Society, ii. 260. These cells, which, as wasps do not store up any food, serve merely as the habitations of their young, are not, like those of the honey-bee, arranged in two opposite layers, but in one only, their entrance being always downwards: consequently the upper part of the comb, composed of the bases of the cells, which are not pyramidal, but slightly convex, forms a nearly level floor, on which the inhabitants can conveniently pass and repass, spaces of about half an inch high being left between each comb. Although the combs are fixed to the sides of the nest, they would not be sufficiently strong without further support. The ingenious builders, therefore, connect each comb to that below it by a number of strong cylindrical columns or pillars, having, according to the rules of architecture, their base and capital wider than the shaft, and composed of the same paper-like material used in other parts of the nest, but of a more compact substance. The middle combs are connected by a rustic colonnade of from forty to fifty of these pillars; the upper and lower combs by a smaller number.
The cells are of different sizes, corresponding to that of the three orders of individuals which compose the community; the largest for the grubs of females, the smallest for those of workers. The last always occupy an entire comb, while the cells of the males and females are often intermixed. Besides openings which are left between the walls of the combs to admit of access from one to the other, there are at the bottom of each nest two holes, by one of which the wasps uniformly enter, and through the other issue from the nest, and thus avoid all confusion or interruption of their common labours. As the nest is often a foot and a half under ground, it is requisite that a covered way should lead to its entrance. This is excavated by the wasps, who are excellent miners, and is often very long and tortuous, forming a beaten road to the subterranean city, well known to the inhabitants, though its entrance is concealed from curious eyes. The cavity itself, which contains the nest, is either the abandoned habitation of moles or field-mice, or a cavern purposely dug out by the wasps, which exert themselves with such industry as to accomplish the arduous undertaking in a few days.
When the cavity and entrance to it are completed, the next part of the process is to lay the foundations of the city to be included in it, which, contrary to the usual customs of builders, wasps begin at the top, continuing downwards. It has alreadybeen observed, that the coatings which compose the dome, are a sort of rough but thin paper, and that the rest of the nest is composed of the same substance variously applied. “Whence do the wasps derive it?” They are manufacturers of the article, and prepare it from a material even more singular than any of those which have of late been proposed for this purpose; namely, the fibres of wood. These they detach by means of their jaws from window-frames, posts, and rails, &c. and, when they have amassed a heap of the filaments, moisten the whole with a few drops of a viscid glue from their mouth, and, kneading it with their jaws into a sort of paste, orpapier mâché, fly off with it to their nest. This ductile mass they attach to that part of the building upon which they are at work, walking backwards, and spreading it into laminæ of the requisite thinness by means of their jaws, tongue, and legs. This operation is repeated several times, until at length, by aid of fresh supplies of the material, and the combined exertions of so many workmen, the proper number of layers of paper, that are to compose the roof, is finished. This paper is as thin as the leaf you are reading; and you may form an idea of the labour which even the exterior of a wasp’s nest requires, on being told that no fewer than fifteen or sixteen sheets of it are usually placed above each other, with slight intervening spaces, making the whole upwards of an inch and a half in thickness. When the dome is completed, the uppermost comb is next begun, in which, as well as all the other parts of the building, precisely the same material and the same process, with little variation, are employed. In the structure of the connecting pillars, there seems a greater quantity of glue made use of than in the rest of the work, doubtless with the view of giving them superior solidity. When the first comb is finished, the continuation of the roof or walls of the building is brought down lower; a new comb is erected; and thus the work successively proceeds until the whole is finished. As a comparatively small proportion of the society is engaged in constructing the nest, its entire completion is the work of several months: yet, though the fruit of such severe labour, it has scarcely been finished a few weeks before winter comes on, when it merely serves for the abode of a few benumbed females, and is entirely abandoned at the approach of spring, as wasps are never known to use the same nest for more than one season.
There is good reason for thinking, and the opinion had the sanction of the late Sir Joseph Banks, that wasps have sentinels placed at the entrances of their nests, which, if you can once seize and destroy, the remainder will not attack you. This is confirmed by an observation of Mr. Knight, in the Philosophical Transactions, (vol. 1. 2d Ed. p. 505;) that if anest of wasps be approached without alarming the inhabitants, and all communication be suddenly cut off between those out of the nest and those within it, no provocation will induce the former to defend it and themselves. But if one escapes from within, it comes with a very different temper, and appears commissioned to avenge public wrongs, and prepared to sacrifice its life in the execution of its orders. He discovered this when quite a boy.
In October, wasps seem to become less savage and sanguinary; for even flies, of which, earlier in the summer, they are the pitiless destroyers, may be seen to enter their nests with impunity. It is then, probably, that they begin to be first affected by the approach of the cold season, when nature teaches them it is useless longer to attend to their young. They themselves all perish, except a few of the females, upon the first attack of frost.
Reaumur, from whom most of these observations are taken, put the nests of wasps under glass hives, and succeeded so effectually in reconciling these little restless creatures to them, that they carried on their various works under his eye.
CURIOSITIES RESPECTING INSECTS.—(Continued.)
Ants—White Ants—Green Ants—Visiting Ants—The Ant-Lion.
The societies ofAnts, as also of otherHymenoptera, differ from those of the Termites, in having inactive larvæ and pupæ, the neuter, or workers, combining in themselves both the military and civil functions. Besides the helpless larvæ and pupæ, which have no locomotive powers, these societies consist of females and workers. The office of the females, at their first exclusion distinguished by a pair of ample wings, (which however, they soon cast,) is the foundation of new colonies, and the furnishing of a constant supply of eggs, for the maintenance of the population in the old nests, as well as in the new. These are usually the least numerous part of the community.
Gould indeed says, that the males and females are nearly equal in number, p. 62; but from Huber’s observations it seems to follow that the former are the most numerous, p. 96.
Upon the workers devolves, except in nascent colonies, all the work, as well as the defence of the community, of which they are the most numerous portion.
In the warm days that occur from the end of July to the beginning of September, and sometimes later, the habitations of the various species of ants may be seen to swarm with winged insects, which are the males and females, preparing to quit for ever the scene of their nativity and education. Every thing is in motion: and the silver wings, contrasted with the jet bodies which compose the animated mass, add a degree of splendour to the interesting scene. The bustle increases, till at length the males rise, as it were by a general impulse, into the air, and the females accompany them. The whole swarm alternately rises and falls with a slow movement to the height of about ten feet, the males flying obliquely with a rapid zigzag motion; and the females, though they follow the general movement of the column, appearing suspended in the air, like balloons, seemingly with no individual motion, and having their heads turned towards the wind.
Sometimes the swarms of a whole district unite their infinite myriads, and, seen at a distance, produce an effect resembling the flashing of an aurora borealis. Rising with incredible velocity in distinct columns, they soar above the clouds. Each column looks like a kind of slender net-work, and has a tremulous undulating motion, which has been observed to be produced by the regular alternate rising and falling just alluded to. The noise emitted by myriads and myriads of these creatures, does not exceed the hum of a single wasp. The slightest zephyr disperses them; and if in their progress they chance to be over your head, if you walk slowly on, they will accompany you, and regulate their motions by yours.
Captain Haverfield, R. N. gives an account of an extraordinary appearance of ants observed by him in the Medway, in the autumn of 1814, when he was first-lieutenant of the Clorinde; which is confirmed by the following letter, addressed by the surgeon of that ship, now Dr. Bromley, to Mr. Mac Leay.
“In September, 1814, being on the deck of the bulk to the Clorinde, my attention was drawn to the water by the first-lieutenant (Haverfield) observing there was something black floating down with the tide. On looking with a glass, I discovered they were insects. The boat was sent, and brought a bucket full of them on board; they proved to be a large species of ant, and extended from the upper part of Salt-pan Reach out towards the Great Nore, a distance of five or sixmiles. The column appeared to be in breadth eight or ten feet, and in height about six inches, which I suppose must have been from their resting one upon another.” Purchas seems to have witnessed a similar phenomenon on shore. “Other sorts (of ants),” says he, “there are many, of which some become winged, and fill the air with swarms, which sometimes happens in England. On Bartholomew-day, 1613, I was in the island of Foulness, on our Essex shore, where were such clouds of these flying pismires, that we could no where flee from them, but they filled our clothes; yea, the floors of some houses where they fell were in a manner covered with a black carpet of creeping ants; which, they say, drown themselves about that time of the year in the sea.”—Pilgrimage, 1090. These ants were winged; but whence this immense column came, was not ascertained. From the numbers here accumulated, one would think that all the ant-hills of the counties of Kent and Surrey could scarcely have furnished a sufficient number of males and females to form it.
When Colonel Sir Augustus Frazer, of the Horse Artillery, was surveying, on the 6th of October, 1813, the scene of the battle of the Pyrenees, from the summit of the mountain called Pena de Aya, or Les Quatre Couronnes, he and his friends were enveloped with a swarm of ants, so numerous as entirely to intercept their view, so that they were glad to remove to another station, in order to get rid of these troublesome little creatures.
The females that escape from the injury of the elements and their various enemies, become the founders of new colonies, doing all the work that is usually done by the neuters. M. P. Huber has found incipient colonies,[11]in which were only a few workers engaged with their mother in the care of a small number of larvæ; and M. Perrot, his friend, once discovered a small nest, occupied by a solitary female, who was attending upon four pupa only. Such is the foundation and first establishment of those populous nations of ants with which we every where meet.
But though the majority of females produced in a nest probably thus desert it, all are not allowed this liberty. The prudent workers are taught by their instinct, that the existence of their community depends upon the presence of a sufficient number of females. Some, therefore, that are fecundated in or near the spot, they forcibly detain, pulling off their wings, and keeping them prisoners till they are ready to lay their eggs, or are reconciled to their fate. De Geer, in a nest ofF. rufa,observed that the workers compelled some females that were come out of the nest to re-enter it; (vol. ii. 1071,)—and from M. P. Huber we learn, that, being seized at the moment of fecundation, they are conducted into the interior of the formicary, when they become entirely dependent upon the neuters, who, hanging pertinaciously to each leg, prevent their going out, but at the same time attend upon them with the greatest care, feeding them regularly, and conducting them where the temperature is suitable to them, but never quitting them a single moment. By degrees these females become reconciled to their condition, and lose all desire of making their escape; their abdomen enlarges, and they are no longer detained as prisoners, yet each is still attended by a body-guard, a single ant, which always accompanies her, and prevents her wants. Its station is remarkable, being mounted upon her abdomen, with its posterior legs upon the ground. These sentinels are constantly relieved; and to watch the moment when the female begins the important work of oviposition, and carry off the eggs, of which she lays four or five thousand or more in the course of the year, seems to be their principal office.
When the female is acknowledged as a mother, the workers begin to pay her a homage very similar to that which the bees render to their queen. All press round her, offer her food, conduct her by her mandibles through the difficult or steep passages of the formicary; nay, they sometimes even carry her about their city: she is then suspended upon their jaws, the ends of which are crossed; and, being coiled up like the tongue of a butterfly, she is packed so close as to incommode the carrier but little. When these set her down, others surround and caress her, one after another tapping her on the head with their antennæ.
“In whatever apartment (says Gould) a queen condescends to be present, she commands obedience and respect. A universal gladness spreads itself through the whole cell, which is expressed by particular acts of joy and exultation. They have a particular way of skipping, leaping, and standing upon their hind-legs, and prancing with the others. These frolics they make use of, both to congratulate each other when they meet, and to shew their regard for the queen: some of them walk gently over her, others dance round her; she is generally encircled with a cluster of attendants, who, if you separate them from her, soon collect themselves into a body, and inclose her in the midst.” Nay, even if she dies, as if they were unwilling to believe it, they continue sometimes for months the same attentions to her, and treat her with the same courtly formality as if she were alive, and they will brush her and lick her incessantly.
That the ants, though they are mute animals, have the means of communicating to each other information of various occurrences, and use a kind of language which is mutually understood, will appear evident from the following facts.
If those at the surface of a nest are alarmed, it is wonderful in how short a time the alarm spreads through the whole nest. It runs from quarter to quarter; the greatest inquietude seems to possess the community; and they carry with all possible dispatch their treasures, the larvæ and pupæ, down to the lowest apartments. Amongst those species of ants that do not go much from home, sentinels seem to be stationed at the avenues of their city. “Disturbing once the little heaps of earth thrown up at the entrances into the nest ofF. flava, which is of this description, (says Huber,) I was struck by observing a single ant immediately come out, as if to see what was the matter, and this three separate times.”
TheF. herculanea, L.inhabits the trunks of hollow trees on the Continent, for it has not yet been found in England, upon which they are often passing to and fro. M. Huber observed, that when he disturbed those that were at the greatest distance from the rest, they ran towards them, and, striking their head against them, communicated their cause of fear or anger that these, in their turn, conveyed in the same way the intelligence to others, till the whole colony was in a ferment, those neuters which were within the tree running out in crowds to join their companions in the defence of their habitation. The same signals that excited the courage of the neuters, produced fear in the males and females, which, as soon as the news of the danger was thus communicated to them, retreated into the tree as to an asylum.
The legs of one of this gentleman’s artificial formicaries were plunged into pans of water, to prevent the escape of the ants; this proved a source of great enjoyment to these little beings, for they are a very thirsty race, and lap water like dogs.—(Gould, 92.De Geer, ii. 1087.Huber, 5, 132.) One day, when he observed many of them tippling very merrily, he was so cruel as to disturb them, which sent most of the ants in a fright to the nest; but some, more thirsty than the rest, continued their potations: upon this, one of those that had retreated, returns to inform his thoughtless companions of their danger; one he pushes with his jaws; another he strikes first upon the belly, and then upon the breast; and so obliges three of them to leave off their carousing, and march homewards; but the fourth, more resolute to drink it out, is not to be discomfited, and pays not the least regard to the kind blows with which his compeer, solicitous for his safety, repeatedly belabours him; at length, determined to have his way, he seizes him by one of his hind-legs, and gives him aviolent pull: upon this, leaving his liquor, the loiterer turns round, and opening his threatening jaws with every appearance of anger, goes very coolly to drinking again; but his monitor, without further ceremony, rushing before him, seizes him by his jaws, and at last drags him off in triumph to the formicary.—Huber, 133.
The language of ants, however, is not confined merely to giving intelligence of the approach or presence of danger; it is also co-extensive with all their other occasions for communicating their ideas to each other, or holding any intercourse. Some engage in military expeditions, and often previously send out spies, to collect information. These, as soon as they return from exploring the vicinity, enter the nest; upon which, as if they had communicated their intelligence, the army immediately assembles in the suburbs of their city, and begins its march towards that quarter whence the spies had arrived. Upon the march, communications are perpetually making between the van and the rear; and when arrived at the camp of the enemy, and the battle begins, if necessary, couriers are dispatched to the formicary for reinforcements.—Huber, 167, 217, 237.
If you scatter the ruins of an ant’s nest in your apartment, you will be furnished with another proof of their language. The ants will take a thousand different paths, each going by itself, to increase the chance of discovery; they will meet and cross each other in all directions, and perhaps will wander long before they can find a spot convenient for their re-union. No sooner does any one discover a little chink in the floor, through which it can pass below, than it returns to its companions, and, by means of certain motions of its antennæ, makes some of them comprehend what route they are to pursue to find it, sometimes even accompanying them to the spot; these, in their turn, become the guides of others, till all know which way to direct their steps.—Huber, 137.
It is well known also, that ants give each other information when they have discovered any store of provision. Bradley relates a striking instance of this. A nest of ants in a nobleman’s garden discovered a closet, many yards within the house, in which conserves were kept, which they constantly attended till the nest was destroyed. Some in their rambles must have first discovered this depôt of sweets, and informed the rest of it. It is remarkable that they always went to it by the same track, scarcely varying an inch from it, though they had to pass through two apartments; nor could the sweeping and cleaning of the rooms discomfit them, or cause them to pursue a different route.—Bradley, 134.
Here may be related a very amusing experiment of Gould’s. Having deposited several colonies of ants (F. fusca) in flowerpots,he placed them in some earthen pans of water, which prevented them from making excursions from their nest. When they had been accustomed some days to this imprisonment, he fastened small threads to the upper part of the pots, and extending them over the water-pans, fixed them in the ground. The sagacious ants soon found out that by these bridges they could escape from their moated castle. The discovery was communicated to the whole society, and in a short time the threads were filled with trains of busy workers passing to and fro.—Gould, 85.
Legion’s account of the ants in Barbadoes, affords another most convincing proof of this: as he has told his tale in a very lively and interesting manner, it shall be given nearly in his own words.
“The next of these moving little animals are ants, or pismires: these are but of a small size, but great in industry; and that which gives them means to attain to this end is, they have all one soul. If I should say they are here or there, I should do them wrong, for they are every where:—under ground, where any hollow or loose earth is; amongst the roots of trees; upon the bodies, branches, leaves, and fruit of all trees; in all places without the houses and within; upon the sides, walls, windows, and roofs, without; and on the floors, side-walls, ceilings, and windows, within; tables, cupboards, beds, stools, all are covered with them, so that they are a kind of ubiquitaries. We sometimes kill a cockroach, and throw him on the ground; and mark what they will do with him: his body is bigger than a hundred of them, and yet they will find the means to take hold of him, and lift him up; and having him above ground, away they carry him, and some go by as ready assistants, if any be weary; and some are the officers that lead and shew the way to the hole into which he must pass; and if the vancouriers perceive that the body of the cockroach lies across, and will not pass through the hole or arch through which they mean to carry him, order is given, and the body turned endwise, and this is done a foot before they come to the hole, and that without any stop or stay; and it is observable, that they never pull contrary ways. A table being cleared with great care, (by way of experiment,) of all the ants that are upon it, and sugar being put upon it, some, after a circuitous route, will be observed to arrive at it; and again departing, without tasting the treasure, will hasten away to inform their friends of the discovery, who, upon this, will come by myriads: you may then, while they are thickest upon the table, clap a large book, or any thing fit for that purpose, upon them, so hard as to kill all that are under it; and when you have done so, take away the book, and leave them to themselves but a quarter of an hour, andwhen you come again, you shall find all these bodies carried away.—Other trials we make of their ingenuity, as thus: Take a pewter dish, and fill it half full of water, into which put a little gallipot filled with sugar, and the ants will presently find it, and come upon the table, but when they perceive it environed with water, they try about the brims of the dish where the gallipot is nearest; and there the most venturous amongst them commits himself to the water, though he be conscious how bad a swimmer he is, and is drowned in the adventure; the next is not warned by his example, but ventures too, and is alike drowned; and many more, so that there is a small foundation of their bodies to venture; and then they come faster than ever, and so make a bridge of their own bodies.”—Hist. of Barbadoes, p. 63.
The fact being certain, that ants impart their ideas to each other, we are next led to inquire by what means this is accomplished. It does not appear that, like the bees, they emit any significant sounds; their language, therefore, must consist of signs or gestures, some of which I shall now detail. In communicating their fear, or expressing their anger, they run from one to another in a semicircle, and strike with their head or jaws the trunk or abdomen of the ant to which they mean to give information on any subject of alarm. But those remarkable organs, their antennæ, are the principal instruments of their speech, if I may so call it, supplying the place both of voice and words. When the military ants before alluded to go upon their expeditions, and are out of the formicary, previously to setting off, they touch each other on the trunk with their antennæ and forehead; this is the signal for marching, for, as soon as any one has received it, he is immediately in motion. When they have any discovery to communicate, they strike with them those that they meet in a particularly impressive manner. If a hungry ant wants to be fed, it touches with its two antennæ, moving them very rapidly, those of the individual from which it expects its meal:—and not only ants understand this language, but even aphides and cocci, which are the milch kine of our little pismires, do the same, and will yield them their saccharine fluid at the touch of these imperative organs. The helpless larvæ also of the ants are informed, by the same means, when they may open their mouths to receive their food.
Next to their language, and scarcely different from it, are the modes by which they express their affections and aversions. Whether ants, with man and some of the larger animals, experience any thing like attachment to individuals, is not easily ascertained; but that they feel the full force of the sentiment which we term patriotism, or the love of the community to which they belong, is evident from the whole seriesof their proceedings, which all tend to promote the general good. Distress or difficulty falling upon any member of their society, generally excites their sympathy, and they do their utmost to relieve it. M. Latreille once cut off the antennæ of an ant; and its companions, evidently pitying its sufferings, anointed the wounded part with a drop of transparent fluid from their mouth: and whoever attends to what is going forward in the neighbourhood of one of their nests, will be pleased to observe the readiness with which they seem disposed to assist each other in difficulties. When a burden is too heavy for one, another will soon come to ease it of part of the weight; and if one is threatened with an attack, all hasten to the spot, to join in repelling it.
The satisfaction they express at meeting after absence is very striking, and gives some degree of individuality to their attachment. M. Huber witnessed the gesticulations of some ants, originally belonging to the same nest, that, having been entirely separated from each other four months, were afterwards brought together. Though this was equal to one-fourth of their existence as perfect insects, they immediately recognized each other, saluted mutually with their antennæ, and united once more to form one family.
They are also ever intent to promote each other’s welfare, and ready to share with their absent companions any good thing that they may meet with. Those that go abroad feed those which remain in the nest, and if they discover any stock of favourite food, they inform the whole community, as we have seen above, and teach them the way to it. M. Huber, for a particular reason, having produced heat, by means of a flambeau, in a certain part of an artificial formicary, the ants that happened to be in that quarter, after enjoying it for a time, hastened to convey the welcome intelligence to their compatriots, whom they even carried suspended upon their jaws (their usual mode of transporting each other) to the spot, till hundreds might be seen thus laden with their friends.
If ants feel the force of love, they are equally susceptible of the emotions of anger; and when they are menaced or attacked, no insects shew a greater degree of it. Providence, moreover, has furnished them with weapons and faculties which render them extremely formidable to their insect enemies, and sometimes, as I have related on a former occasion, a great annoyance to man himself, (vol. i. 2d ed. p. 123.) Two strong mandibles arm their mouth, with which they sometimes fix themselves so obstinately to the object of their attack, that they will sooner be torn limb from limb than let go their hold; and, after their battles, the head of a conquered enemy may often be seen suspended to the antennæ or legs of the victor, a trophy of his valour, which, however troublesome,he will be compelled to carry about with him to the day of his death. Their abdomen is also furnished with a poison-bag, (ioterium,) in which is secreted a powerful and venomous fluid, long celebrated in chemical researches, and once calledformic acid, though now considered a modification of theaceticandmalic;[12]which, when their enemy is beyond the reach of their mandibles, (it is spoken here particularly of the hill ant, orF. rufa,) standing erect on their hind legs, they discharge from their anus with considerable force, so that from the surface of the nest ascends a shower of poison, exhaling a strong sulphurous odour, sufficient to overpower or repel any insect or small animal. Such is the fury of some species, that with the acid, according to Gould, p. 34. they sometimes partly eject the poison-bag itself. If a stick be stuck into one of the nests of the hill ant, it is so saturated with the acid as to retain the scent for many hours. A more formidable weapon arms the species of the genusMyrmica latr.; for, besides the poison-bag, they are furnished with a sting; and their aspect is also often rendered peculiarly revolting, by the extraordinary length of their jaws, and by the spines which defend their head and trunk.
But weapons without valour are of but little use; and this is one distinguishing feature of this pigmy race. Their courage and pertinacity are unconquerable, and are often sublimed into the most inconceivable rage and fury. It makes no difference to them whether they attack a mite or an elephant; and man himself instils no terror into their warlike breasts. Point your finger towards any individual ofF. rufa; instead of running away, it instantly faces about, and, that it may make the most of itself, stiffening its legs into a nearly straight line, it gives its body the utmost elevation it is capable of; and thus—
“Collecting all its might, dilated stands,”
prepared to repel your attack. Put your finger a little nearer, it immediately opens its jaws to bite you, and rearing upon its hind legs, bends its abdomen between them, to eject its venom into the wound.[13]
This angry people, so well armed and so courageous, we may readily imagine, are not always at peace with their neighbours; causes of dissension may arise, to light the flame of war between the inhabitants of nests not far distant from each other. To these little bustling creatures, a square foot of earth is a territory worth contending for; their droves of aphides being equally valuable with the flocks and herds that coverour plains; and the body of a fly or a beetle, or a cargo of straws and bits of stick, an acquisition as important as the treasures of a Lima fleet to our seamen. Their wars are usually between nests of different species; sometimes, however, those of the same, when so near as to interfere with and incommode each other, have their battles; and with respect to ants of one species,Myrmica rubra, combats occasionally take place, contrary to the general habits of the tribe of ants, between those of the same nest.
The wars of the red ant (M. rubra) are usually between a small number of the citizens; and the object, according to Gould, is to get rid of a useless member of the community, (it does not argue much in favour of their humanity, that it is all one if it be by sickness that this member is disabled,) rather than any real civil contest. The red colonies, (says this author,) are the only ones I could ever observe to feed upon their own species. You may frequently discern a party of from five or six to twenty, surrounding one of their own kind, or even fraternity, and pulling it to pieces. The ant they attack is generally feeble, and of a languid complexion, occasioned perhaps by some accident or other.—Gould, 104.
“I once saw one of these ants dragged out of the nest by another, without its head; it was still alive, and could crawl about. A lively imagination might have fancied that this poor ant was a criminal, condemned by a court of justice to suffer the extreme sentence of the law. It was more probably, however, a champion that had been decapitated in an unequal combat, unless we admit Gould’s idea, and suppose it to have suffered because it was an unprofitable member of the community.[14]At another time I found three individuals that were fighting with great fury, chained together by their mandibles; one of these had lost two of the legs of one side, yet it appeared to walk well, and was as eager to attack and seize its opponents, as if it was unhurt. This did not look like languor or sickness.”
The wars of ants that are not of the same species take place usually between those that differ in size; and the great endeavouring to oppress the small, are nevertheless often outnumbered by them, and defeated. Their battles have long been celebrated; and the dates of them, as if they were events of the first importance, have been formally recorded. Æneas Sylvius, after giving a very circumstantial account of onecontested with much obstinacy by a great and small species, on the trunk of a pear-tree, gravely states, “This action was fought in the pontificate of Eugenius the Fourth, in the presence of Nicholas Pistoriensis, an eminent lawyer, who related the whole history of the battle with the greatest fidelity!” A similar engagement between great and small ants is recorded by Olaus Magnus, in which the small ones being victorious, are said to have buried the bodies of their own soldiers, but left those of their giant enemies a prey to the birds. This event happened previous to the expulsion of the tyrant Christian the Second from Sweden.—Mouffet, Theatr. Ins.242.
M. P. Huber is the only modern author that appears to have been witness to these combats. He tells us, that when the great attack the small, they seek to take them by surprise, (probably to avoid their fastening themselves to their legs,) and, seizing them by the upper part of the body, they strangle them with their mandibles; but when the small have time to foresee the attack, they give notice to their companions, who rush in crowds to their succour. Sometimes, however, after suffering a signal defeat, the smaller species are obliged to shift their quarters, and to seek an establishment more out of the way of danger. In order to cover their march, many small bodies are then posted at a little distance from the nest. As soon as the large ants approach the camp, the foremost sentinels instantly fly at them with the greatest rage; a violent struggle ensues, multitudes of their friends come to their assistance, and, though no match for their enemies singly, by dint of numbers they prevail, and the giant is either slain or led captive to the hostile camp. The species whose proceedings M. Huber observed, wereF. herculanea,L. and F. sanguinea, Latr.; neither of which have yet been discovered in Britain.—Huber, 160.
The White Ants, orTermites.—The majority of these animals are natives of tropical countries, though two species are indigenous to Europe; one of which, thought to have been imported, is come so near to us as Bourdeaux. Their society consists of five different descriptions of individuals: workers or larvæ, nymphs or pupæ, neuters or soldiers, males, and females.
1. The workers or larvæ, answering to the hymenopterous neuters, are the most numerous, and, at the same time, most active part of the community; upon whom devolves the office of erecting and repairing the buildings, collecting provision, attending upon the female, conveying the eggs, when laid, to the nurseries, and feeding the young larvæ till they are old enough to take care of themselves. They are distinguishedfrom the soldiers by their diminutive size, by their round heads, and shorter mandibles.
2. The nymphs, or pupæ, differ in nothing from the larvæ, and probably are equally active, except that they have rudiments of wings, or rather wings folded up in cases.
3. The neuters are much less numerous than the workers, bearing the proportion of one to one hundred, and exceeding them greatly in bulk. They are also distinguishable by their long and large heads, armed with very long tubulate mandibles. Their office is that of sentinels; and when the nest is attacked, to them is committed the task of defending it. These neuters seem to be a kind of abortive females, and there is nothing analogous to them in any other department of entomology.
4 and 5. Males and females, or the insects arrived at a state of perfection, and capable of continuing the species. There is only one of each in every separate society; they are exempted from all participation in the labours and employments occupying the rest of the community, that they may be wholly devoted to the furnishing of a constant accession to the population of the colony. Though at their first disclosure from the pupæ they have four wings, like the female ants, they soon cast them; but they may then be distinguished from the blind larvæ, pupæ, and neuters, by their large and prominent eyes.
The different species of Termites, which are numerous, build nests of very various forms. Some construct upon the ground a cylindrical turret of clay, about three-quarters of a yard high, surrounded by a projecting conical roof, so as in shape considerably to resemble a mushroom, and composed interiorly of innumerable cells, of various figures and dimensions. Others prefer a more elevated site, and build their nests, which are of different sizes, from that of a hat to that of a sugar-cask, and composed of pieces of wood glued together, amongst the branches of trees, often seventy or eighty feet high. But by far the most curious habitations, are those formed by theTermes bellicosus, a species very common in Guinea, and other parts of the coasts of Africa, of whose proceedings we have a very particular and interesting account in the 71st volume of the Philosophical Transactions.
These nests are formed entirely of clay, and are generally twelve feet high, and broad in proportion; so that when a cluster of them, as is often the case in South America, are placed together, they may be taken for an Indian village, and are in fact sometimes larger than the huts which the natives inhabit. The first process in the erection of these singular structures, is the elevation of two or three turrets of clay, about a foot high, and in shape like a sugar-loaf. These, which seem to be the scaffolds of the future building, rapidly increase in numberand height, until at length being widened at the base, joined at the top into one dome, and consolidated all around into a thick wall of clay, they form a building of the size above-mentioned, and of the shape of a haycock, which, when clothed, as it generally soon becomes, with a coating of grass, it at a distance very much resembles. When the building has assumed this its final form, the inner turrets, all but the tops, which project like pinnacles from different parts of it, are removed, and the clay employed over again in other services. It is the lower part alone of the building that is occupied by the inhabitants; the upper portion, or dome, which is very strong and solid, is left empty, serving principally as a defence from the vicissitudes of the weather and the attacks of natural or accidental enemies, and to keep up in the lower part a genial warmth and moisture, necessary to the hatching of the eggs and cherishing of the young ones. The inhabited portion is occupied by the royal chamber, or habitation of the king and queen; the nurseries for the young; the storehouses for food; and innumerable galleries, passages, and empty rooms, arranged according to the following plan:—
In the centre of the building, just under the apex, and nearly on a level with the surface of the ground, is placed the royal chamber, an arched vault of a semi-oval shape, or not unlike a long oven; at first not above an inch long, but enlarged, as the queen increases in bulk, to the length of eight inches or more. In this apartment the king and queen constantly reside, and, from the smallness of the entrances, which are barely large enough to admit their more diminutive subjects, can never possibly come out; thus, like many human potentates, purchasing their sovereignty at the dear rate of the sacrifice of liberty. Immediately adjoining the royal chamber, and surrounding it on all sides to the extent of a foot or more, are placed the royal apartments, an inextricable labyrinth of innumerable arched rooms, of different shapes and sizes, either opening into each other, or communicating by common passages, and intended for the accommodation of the soldiers and attendants, of whom many thousands are always in waiting on their royal master and mistress.
Next to the royal apartments come the nurseries and the magazines. The former are invariably occupied by the eggs and young ones, and, in the infant state of the nest, are placed close to the royal chamber; but when the queen’s augmented size requires a larger apartment, as well as additional rooms for the increased number of attendants wanted to remove her eggs, the small nurseries are taken to pieces, rebuilt at a greater distance, a size larger, and their number increased at the same time. In substance they differ from all the other apartments, being formed of particles of wood, apparentlyjoined together with gums. A collection of these compact, irregular, and small wooden chambers, not one of which is half an inch in width, is inclosed in a common chamber of clay, sometimes as big as a child’s head. Intermixed with the nurseries, lie the magazines, which are chambers of clay, always well stored with provisions, consisting of particles of wood, gums, and the inspissated juices of plants.
These magazines and nurseries, separated by small empty chambers and galleries, which run round them, or communicate from one to the other, are continued on all sides to the outer wall of the building, and reach up within it two-thirds or three-fourths of its height. They do not, however, fill up the whole of the lower part of the hill, but are confined to the sides, leaving an open area in the middle, under the dome, very much resembling the nave of an old cathedral, having its roof supported by two very large Gothic arches, of which those in the middle of the area are sometimes two and three feet high, but as they recede on each side, rapidly diminish, like the arches of aisles in perspective. A flattish roof, imperforated, in order to keep out the wet, if the dome should chance to be injured, covers the top of the assemblage of chambers, nurseries, &c.; and the area, which is a short height above the royal chamber, has a flattish floor, also waterproof, and so contrived as to let any rain, that may chance to get in, run off into the subterraneous passages.