[I] In French le lievre; in Greek λγὡς; in Latin lepus; in Italian lepre; Spanish liebre; Portuguese lebre; German hase; Swedish hare; Dutch hase; Polish lajonz.
The species of animals which are most numerous are not the most useful. Nothing can be more noxious than the multitudes of rats, mice, locusts, caterpillars, and many other insects, of which it would seem that Nature rather admitted than ordained the extraordinary increase. But those of the hare and rabbit are advantageous to us both from the number and utility. Hares are abundantly spread over the face of the earth; and rabbits, though originally natives of particular climates, multiply so prodigiously in almost every place to which they are transported, that instead of being extirpated, no small art is required in order to diminish their too-often inconvenient number. When we reflect on the astonishing fecundity of each particular species, on the quick and prodigious multiplication of certain animals which come into existence, as it were, to desolate the fields and ravage the earth, we are astonished they do not oppress Nature with their numbers, and after having devoured her productions become themselves victims to the destruction they have made. We cannot view without terror those thick clouds, those winged phalanxes of famished insects which seem to menace the whole globe, and whether lighting on the fruitful plains of Egypt, or of India, in an instant destroy the labours and hopes of a whole people; and sparing neither grain, fruit, herbs, nor leaves, strip the earth of its verdue, and change the richest countries into barren desarts. We behold rats descending from the northern mountains, in innumerable multitudes, rushing like a deluge of living matter, overflow the plains, spread themselves over the southern provinces, and after having destroyed in their passage every thing that lives, or vegetates, finish their career with infecting the earth and air with their putrid carcasses. We behold in the southern regions myriads of ants issuing from the desarts, which, like an exhaustless torrent, arrive in thick and successive columns, take possession of every spot, drive away men and animals from their habitations, and never retire till they have caused a general devastation. And in those times when man himself was but half civilized, and subject to all the laws and even excesses of Nature, were there not similar inundations of the human species? Have there not been Normans, Huns, and Goths, whole nations, or rather tribes of animals bearing the human form without dwellings, and without distinction, who have suddenly rushed from their caves, and marched in tumultuous herds, and without any force but what consists in numbers, overthrown empires, destroyed nations, and having ransacked the earth, concluded by repeopling it with a race not less barbarous than themselves?
These æras, these great events, though so strongly marked in the History of Mankind, are yet only slight vicissitudes in the ordinary course of animated nature, which is in general always uniform and the same; its movements are regulated by two unchangeable wheels; the one, unbounded fecundity of every species; the other, the innumerable causes of destruction which are perpetually reducing the produce of that fecundity to a determinate measure, so as to preserve nearly the same number of individuals in each species. And as these multitudinous animals, which appear suddenly, disappear in the same manner, without augmenting their race, so does the human species always remain the same; the variations only are more slow, because the life of man being longer than that of small animals, the alternate changes of increase and diminution must necessarily require a greater portion of time. But time itself is only an instant in the succession of ages, and only strikes us the more forcibly, from having been accompanied with horror and destruction; for, taking all the inhabitants of the globe together, the number of the human race, like that of other animals, will, at all times, appear to be nearly the same; as this depends entirely upon an equilibrium of physical causes, an equilibrium to which every thing has long been reduced, and which neither the efforts of man, nor any moral circumstances whatever, can dissolve; those circumstances themselves being dependant on physical causes. Whatever care man may bestow on his own species, he will never be able to render it more numerous in one place without destroying or diminishing it in another[J]. As soon as any one country is overstocked with inhabitants they diffuse themselves over other countries, or destroy each other, and not unfrequently establish laws and customs calculated to prevent an excess of multiplication. In climates of exuberant fertility, as China, Egypt, and Guinea, they banish, mutilate, drown, or sell their infants; in Catholic countries they condemn them to perpetual celibacy. Those who actually exist find no difficulty in arrogating to themselves the disposal of the rights of those who have no existence. Considering themselves as necessary, they annihilate contingent beings, and scruple not to suppress future generations for their own ease and convenience. Mankind, without perceiving it, treat their own species exactly in the same manner as they do other animals; they cherish and multiply, or neglect and destroy them, according as it suits their purpose; and as all moral effects depend upon physical causes, which ever since the earth assumed its form, are fixed and permanent, it follows that in the human, as well as in the other animal species, the number must likewise be uniform and unalterable. It is to be observed that this fixed state, this permanent number, are not to be considered in an absolute sense; all physical and moral causes, and all the effects which flow from them, are comprised and balanced within certain limits, more or less extended, but never so large as to destroy the equilibrium. As the whole universe is in a state of perpetual motion, and as all the forces of matter act against and counter-balance each other, so every thing is brought about in a kind of oscillation, to the middle points of which we refer the ordinary course of Nature, and whose extremes are the furthest removed from that course. In effect, therefore, we find that an excess of fecundity, either in animals or vegetables, is the usual fore-runner of sterility. Plenty and scarcity present themselves so alternately, and often follow so close upon each other, that a tolerable judgment may be formed of the product of one year by that of the preceding. The apple, plum, oak, beech, and indeed most fruit and forest trees, do not bear plentifully two years together. So likewise it is with caterpillars, May-bugs, flies, field mice, and many other animals, who if they multiply to excess one year, they will produce but a very small number the next. What, indeed, would become of all the fruits of the earth, of the most useful animals, or even of man himself, if these insects were to be proportionally increased after a fertile season? But no; the causes of destruction and sterility immediately follow those of an excessive multiplication. Independent of contagion, a necessary consequence of too great a mass of living matter assembled in one place, there are in every species, certain causes of death, as we shall hereafter have occasion to mention, and which are sufficient to counter-balance any preceding excess of fecundity. I must again observe that this is not to be taken in an absolute or strict sense, especially with respect to those species which do not remain entirely in a state of nature. Those which man takes care to rear are more abundant than they otherwise would be; but as his attention has its limits, so the increase which flows from it has long since been confined by unalterable bounds; and though in civilized countries, the human species and domestic animals, are more numerous than in other climates, they are never so to excess; because the very power which calls them into existence, destroys them when they become troublesome.
[J] We were at first inclined to combat this position of our learned author, with those reasons, founded upon facts, which may be adduced against it; but he has himself so completely replied to it at the end of his dissertation upon wild animals, page 26 of this volume, that any thing further than repeating his own observation must be unnecessary; for he there says, that, “in process of time, we may reasonably suppose the surface of the earth will be equally inhabited,” which is surely impossible without considerable increase.
In those districts which are reserved for the chace, four or five hundred hares are sometimes killed in the course of one day’s sport. These animals multiply amazingly; they engender at all seasons, and are in a condition to propagate before the first year of their life is expired. The females do not go with young above thirty or thirty-one days; they produce three or four, and are immediately after ready to receive the male; they likewise receive him during the time of gestation, and by a particular formation of their organs are often found to have a super-fœtation; for the vagina and the matrix are continuous, and the latter has neither neck or orifice in the womb, as in other animals; yet each horn has an orifice which opens into the vagina and dilates during the time of bringing forth; and which forming two distinct uteri, act independently of each other; so that the females of this species are capable of conceiving and bringing forth by each matrix at different times; and consequently super-fœtation must be as common among these animals, as it is rare among those which have not this double organ. It is plain, therefore, that the females may be impregnated at all times. By another singularity in their conformation they are found to be as lascivious as they are fruitful; the gland of the clitoris is prominent and almost as large as the sexual distinction of the male; and as the vulva is hardly visible, and the males when young have no exterior marks, it is often difficult to distinguish the sexes. It is these circumstances which have given rise to the opinions that there are many hermaphrodites among these animals, that the males sometimes bring forth, and that some are alternately males and females, and perform the office of either sex; because the females being more lascivious than the males will get upon them, and because they so much resemble each other externally, that unless very closely examined one sex may be mistaken for the other.
The young ones have their eyes open when brought forth; the mother suckles them about twenty days, after which they separate and provide for themselves; they do not wander far from each other, nor from the place of their birth; yet they live in solitude, each composing itself a form at the distance of sixty or eighty paces; thus when we find a leveret in any place, we are almost certain of finding one or two more in the neighbourhood. They feed more by night than day; and chiefly upon herbs, leaves, fruits, and grain, but above all they prefer those plants which yield a milky juice; they even eat the bark of trees in winter, except that of the alder and lime, neither of which they ever touch. When reared at home they are fed with lettuces and other herbs; but the flesh of these domestic fed hares has always a bad taste. They sleep and repose themselves in their forms during the day, and only live, as it were, in the night, when they range about, feed, and copulate; they may be seen by moonlight playing, leaping, and pursuing each other, but the smallest noise, even the rustling of a falling leaf is sufficient to alarm them; they fly, and in their flight take different ways.
Some authors have asserted that hares chew the cud; but I cannot believe this opinion to be well founded, as they have but one stomach, and the conformation of that, as well as the other intestines is altogether different in ruminating animals. The cœcum of the latter is small, while those of hares are extremely large; and if we add to the capacity of the stomach this large cœcum, we shall easily conceive, that being capable of receiving a great quantity of food, this animal may live upon herbage alone, like the horse and the ass, which have also a large cœcum and but one stomach, and consequently cannot ruminate.
Hares sleep much, but always with their eyes open. They have neither eye-lids, nor cilia, and seem to have bad eyes; but as if for a recompence of that defect, their hearing is exceedingly acute, and their ears are very large in proportion to the size of their bodies. They move these long ears with great facility, and use them as an helm to direct their course, which is so rapid that they easily outstrip all other animals. Their fore legs being much shorter than their hind ones they can more easily mount than descend, for which reason when pursued they always make towards the rising grounds. Their running is a kind of leaping gallop, and they proceed without making the smallest noise, as their feet, even underneath, are covered with hair, and perhaps they are the only animals which have hair growing within side of their mouths. The hare does not live above seven or eight years; he completes his growth in one, and the duration of its life is proportioned to this period, for he lives to about seven times that space. Some indeed assert that the males live longer than the females, but that I much doubt. They pass their lives in solitude and silence, and never exert their voices but when seized or wounded; their cry is sharp and strong, and not unlike the human voice. They are not so savage as by their habits and manners might be supposed; they are gentle, and susceptible of a species of improvement. They are easily tamed, but never acquire that degree of attachment which is requisite to render them domestic, for those which are taken very young, and brought up in a house, will take the first opportunity to escape and fly into the country. As they have a good ear, as they sit of their own accord upon their hind legs, and use the fore legs like arms, some have been so tutored as to beat a drum, to perform gestures in cadence, &c.