Thus was a graininivorous animal nurtured by a carnivorous and predaceous one!

Why so cruel and sanguinary a beast as a cat, of the fero cious genus of felis, the murium leo, "the lion of mice," as Linnæus calls it, should be affected with any tenderness towards an animal which is its natural prey, is not so easy to determine.

This strange affection probably was occasioned by that desiderium, those tender maternal feelings, which the loss of her kittens had awakened in her breast; and by the complacency and ease she derived to herself from procuring her teats to be drawn, which were too much distended with milk; till, from habit, she became as much delighted with this foundling, as if it had been her real offspring.

This incident is no bad solution of that strange circumstance which grave historians, as well as the poets, assert, of exposed children being sometimes nurtured by female wild beasts that probably had lost their young. For it is not one whit more marvellous that Romulus and Remus, in their infant state, should be nursed by a she-wolf, than that a poor little sucking leveret should be fostered and cherished by a bloody grimalkin.

LETTER LXXVII.

TO THE SAME.

SELBORNE, May 20, 1777. DEAR SIR,-Lands that are subject to frequent inundations are always poor; and, probably, the reason may be, because the worms are drowned. The most insignificant insects and reptiles are of much more consequence, and have much more influence in the economy of Nature, than the incurious are aware of; and are mighty in their effect, from their minuteness, which renders them less an object of attention; and

milk in jets. I once saw a young panther suckled by a bitch, and last year I had a kitten who was often to be seen sucking a spaniel bitch. Many other instance: might be brought forward.-Eɔ.

from their numbers and fecundity. Earth-worms, though in appearance a small and despicable link in the chain of Nature, yet, if lost, would make a lamentable chasm.* For

to say nothing of half the birds, and some quadrupeds, which are almost entirely supported by them, worms seem to be the great promoters of vegetation, which would proceed but lamely without them, by boring, perforating, and loosening the soil, and rendering it pervious to rains and the fibres of plants, by drawing straws and stalks of leaves into it; and, most of all, by throwing up such infinite numbers of lumps of earth, called worm-casts, which being their excrement, is a fine manure for grain and grass.† Worms pro

* The following interesting account of the earth-worm was communicated to me by an intelligent correspondent:-"On Tuesday night, February 3rd, 1836, we had the deepest snow which has fallen for the winter; though not to be compared with what fell in the west, and in other parts of England. As on other occasions we observed the blackbirds and thrushes drawing up to the house, and cowering as if to give notice of a coming storm. On the following morning, on looking out of window we noticed an unusual appearance. At first sight it seemed as if the unsullied snow had many little twigs or sticks scattered all over its surface. On closer inspection it proved that numbers of large earth-worms were writhing on the face of the snow, and they furnished a rich repast for the birds to breakfast on, so that some of our usual visitors forsook their crumbs under the verandah. What circumstances can have induced these earth-worms to leave their holes and to be found in such an uncongenial station, we cannot imagine. Perhaps, as the evening was mild and moist they may have sallied forth, and the snow, coming suddenly, may have prevented their finding their way to their homes. But why mount to the surface and expose themselves to certain death! The recollection of this phenomenon is still fresh in our memories, and when I recalled it to a sister who was with us, she spoke of it with disgust, as like a layer of flesh upon the snow. But I have never had the causes clearly explained, nor am I sufficiently acquainted with the habits of earth-worms to do so. As far as I have observed they never leave their holes, unless something is the matter. You have probably observed on a mild moist evening, when they bask on the turf, and dart into their holes with infinite vivacity, that they always retain possession at one extremity. I have found that if I have snatched one from his hold, I could not restore it again. The poor creature was quite lost, and could neither find his way home himself or be replaced in it by me. Am I right in supposing that they never voluntarily leave their holes? Or do they wander forth in the depth of the night, and in the case described above, were they excluded by the sudden fall of snow and change of temperature?"-ED.

The runs, also, made by worms in the earth, enables the water to percolate to the roots of wheat and other grain. Worm-casts, when collected are an excellent soil for many flowers, such as carnations, pinks, &c.—ED.

ably provide new soils for hills and slopes where the rain washes the earth away; and they affect slopes, probably, to avoid being flooded. Gardeners and farmers express their detestation of worms;* the former, because they render their walks unsightly, and make them much work: and the latter, because, as they think, worms eat their green corn. But these men would find, that the earth without worms would soon become cold, hard-bound, and void of fermentation; and, consequently, sterile: and, besides, in favour of worms, it should be hinted, that green corn, plants and flowers are not so much injured by them as by many species of coleoptera (scarabs), and tipule (long-legs), in their larva or grub-state; and by unnoticed myriads of small shell-less snails, called slugs, which silently and imperceptibly make amazing havoc in the field and garden.+

These hints we think proper to throw out, in order to set the inquisitive and discerning to work.

A good monography of worms would afford much enter

*We are indebted to Charles Darwin, Esq., for a remarkable and interesting memoir on the utility of the earth-worm, read before the Geological Society. The worm-casts, which so much annoy the gardener by deforming his smooth-shaven lawns, are of no small importance to the agriculturist; and this despised creature is not only of great service in loosening the earth, and rendering it permeable by air and water, but is also a most active and powerful agent in adding to the depth of the soil, and in covering comparatively barren tracts with a superficial layer of wholesome mould. The author's attention was directed by Mr. Wedgwood, of Maer Hall, Staffordshire, to several fields, some of which had a few years before been covered with lime, and others with burnt marl and cinders, which substances in every case are now buried to the depth of some inches below the turf, just as if, as the farmers believe, the particles had worked themselves down. After showing the impossibility of this supposed operation, the author affirms that the whole is due to the digestive process by which the common earth-worm is supported; since, on carefully examining between the blades of grass in the fields above-mentioned, he found that there was scarcely a space of two inches square without a little heap of cylindrical castings of worms; it being well known that worms swallow the earthy matter, and that having separated the serviceable portion, they eject at the mouth of their burrows the remainder in little intestine-shaped heaps. Still more recently Mr. Darwin has noticed a more remarkable instance of this kind, in which, in the course of eighty years, the earth-worm had covered a field then manured with marl, with a bed of earth, averaging thirteen inches in thickness.

Farmer Young, of Norton-farm, says, that this spring (1777) about four acres of his wheat in one field was entirely destroyed by slugs, which swarmed on the blades of corn, and devoured it as fast as it sprang.