This species is not very much diffused; it is not met with in the cold climates, such as Lapland and Sweden; at least the naturalists of the north do not mention it; the species they describe being the muscardin, the smallest of the three; neither, I presume are they to be met within very hot climates, travellers being silent about them. There are few or none of them in open countries like England; they require a temperate climate, and the country covered with wood. We meet with them in Spain, France, Greece, Italy, Germany, and Switzerland, where they live in forests, upon hills, and not on the tops of mountains, like the marmot, which, though subject to a torpor from the cold, seems to delight in frost and snow.
THE LEROT.
The loir lives in forests and seems to shun our habitations, but the lerot, (called sometimes the middle dormouse, at others the garden squirrel) on the contrary, inhabits our gardens, and is sometimes to be found in our houses; this species is likewise more numerous and more generally diffused; and there are few gardens which are not infested with them. They nestle in the holes of walls, climb up trees, choose the best fruits, and devour them as they begin to ripen. Peaches seem to be their favourite fruit, and whoever wishes to preserve them must take pains to destroy the lerot. They likewise climb up pear, plum, and apricot trees, and in a scarcity of fruits, they eat almonds, nuts, and even leguminous plants. These they carry off in great quantities to their holes, which they dig in the earth, above all, in well cultivated gardens, where they make themselves beds of herbs, moss, and leaves. The cold stupefies them, but they are revived by the heat; eight or ten of them are sometimes found in one place, in a state of torpor, all huddled together, and rolled up in the midst of their hoard of provisions. They couple in spring and bring forth in summer. They commonly have five or six young at a time; they are very quick of growth, but do not engender till the second year; their flesh is not eatable like that of the loir; they have the same disagreeable smell as the house rat, whereas the loir has no bad smell; they never become so fat as the latter. This animal is found in all the temperate climates of Europe, and even in Poland and Prussia, but they do not appear to exist in Sweden and the more northern countries.
THE DORMOUSE.
Of all the species of the rat, the dormouse ([fig. 90.]) is the least ugly. It has brilliant eyes, and a full tail, which is rather white than red. It never lives in houses, and seldom in gardens, but like the loir, chiefly frequents the woods, and shelters itself in the hollows of old trees. This species is by no means so numerous as that of the lerot. The dormice are always found alone in their several holes, and I had much difficulty to procure a few of them; they however, seem to be pretty common in Italy, and not unknown in the northern climates, since they are comprised by Linnæus in his list of Swedish animals; but they do not appear to exist in England, for Mr. Ray in his Synopsis, who had seen it in Italy, says the small dormouse found in England is not red on the back like the Italian muscardin, and that it probably belongs to a different species. In France it is the same as in Italy, and is justly described by Aldrovandus in his History of Quadrupeds; but he adds there are two species in Italy, one of which is scarce, and has the smell of musk, the other more general without any particular odour, and that at Bologna they are both called muscardino from their resemblance in figure and size. Of these two species we only know the latter, as the dormice of France have no smell either good or bad. Its flesh, however, is unfit to eat, and it never becomes so fat as the loir.
The dormouse becomes torpid with cold and revives in mild weather, and like the loir and lerot hoards up nuts and other dry fruits. It forms its nest upon trees, like the squirrel, though generally lower among the branches of nut-trees, and underwood; the nest is made of herbs interwoven, is about six inches in diameter and is only open at the top. Many countrymen have assured me that they have found the nests of dormice in coppices and in hedges, that they were surrounded with leaves and moss, and that each nest contained three or four young ones. As soon as they grow up they quit their rests, shelter themselves in the hollows or under trunks of trees, where they repose, lay up provisions, and sleep through the winter.
THE SURMULOT.
This species of rat has been known but for a few years, and is not mentioned by any naturalist except M. Brisson, who calls it the Rat of the Woods, but as it bears a greater resemblance to the field-mouse, in colour and habitudes, than to the rat, I have termed it the Surmulot, or large Field-mouse. This animal is more strong and mischievous than the rat; it has reddish hair, long naked tail, the backbone is arched like that of a squirrel, its body is much thicker, and it has whiskers like a cat. It is but a few years since this species has been spread in the neighbourhood of Paris; from whence they came is not known, but they have multiplied prodigiously, which is not wonderful when it is considered that they produce from twelve to nineteen young ones at a time. They were first discovered at Chantilly, Marly, and Versailles. From M. le Roi I received a great number of them both alive and dead, and he also favoured me by communicating the remarks he had made upon this new species. The males are larger, stronger, and more mischievous than the females. When pursued or endeavoured to be taken, they turn and bite the stick or hand which touches them: their bite is sharp and dangerous, for it is immediately followed by a considerable swelling, and the wound, though small, does not soon heal. They bring forth three times in a year, so that two individuals may produce 36 in twelve months. Some of the females which I received were with young, and as I kept them in cages, two or three days before they brought forth I observed them busily gnawing the wood of their cages and putting the pieces into a kind of order, making beds for their little ones.
The surmulot, in some of its habits, resembles the water-rat. Though they take up their residences anywhere, they seem to prefer the banks by the water; the dogs also chase them with the same furious eagerness as they do the water-rat. When pursued, and they can equally take to the water, or shelter themselves in a thorny thicket, they prefer the former, plunge in without dread, and swim with great facility. This particularly happens when they cannot regain their burrows, for, like the field-mouse, they dig holes in the earth, or occupy those made by rabbits. They may also be taken by means of ferrets, who pursue them into their hole with the same ardour as they do the rabbit. These animals pass the summer in the country; they live principally on fruits or grain, yet are carnivorous, devouring young hares, rabbits, partridges, and other birds, and when they get into a hen-roost they destroy, like the polecat, more than they can eat. About November the females and the young ones quit the fields, and proceed in troops to barns, where they commit infinite havock, by destroying the straw, consuming the grain, and infecting every thing with their ordure. The old males remain in the fields each in his respective hole, where they accumulate acorns, beech-mast, &c. filling it to the very edge, and remaining themselves at the bottom. They do not become torpid in the winter, like the dormouse, but come out of their holes every fine day. Those which reside in barns drive away all the mice and rats; and it has even been remarked, that the common rats are less frequent in the environs of Paris since the surmulot became so numerous.