The badger, the hedgehog and the mole also provide themselves a magazine of plants and herbs, which they foreknow will enable them to lie concealed in their holes during the hard frosts of winter, contented with their prison, which affords them safety. Their holes are constructed with amazing art, and generally have two apertures, that in case one should be beset by an enemy, they may escape by the other. The doublings by the hare, the tricks of the fox to escape the hounds, are also astonishing indications of foresight and sagacity. The feathered race are likewise endowed with a similar faculty and often foretell an approaching storm a considerable time before it appears, by retiring in flocks to their holes and hiding places for shelter and protection. The birds of passage seem to inherit this gift in a remarkable degree, for they assemble together in prodigious flocks at an appointed hour, and take their leave before the approach of winter; which they see will destroy the flies and insects, as they feed on nothing else. And it is no less extraordinary than true, that these birds return as early as the sun brings forth this class of insects into new life, and they have also the sagacity to find out and possess their old nests and habitations. The wise, provident forecast for self-preservation and safety is even extended to the innumerable inhabitants of the immense ocean, where we see the fishes, pressed by unceasing hunger, indiscriminately prey upon one another, the large upon the small, even of its own species; whence the smaller fish in regular gradations, when in danger of being devoured, fly for an asylum to the shallow waters, where they know their enemy either cannot or dare not come to pursue them. And this pursuit of one species of fish after another, is by no means confined to a single region, for we find shoals of them pursuing one another, from the vicinity of the pole even down to the equator, and thus the cod from the banks of the Newfoundland pursues the whiting, which flies before it, even to the southern shores of Spain. It is astonishing also, that herrings, which appear to generate towards the north of Scotland, regularly make their way once a year to the British Channel. Their voyage is conducted with the utmost regularity, and the time of their departure is fixed from the month of June to August. They always assemble together before they set out and no stragglers are ever found from the general body. It is impossible to assign any cause for this emigration, but it doubtless proceeds from the same instinctive impulse with which all orders of animated nature are more or less imbued.