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第4章 青蛟玄蛇

the blows of their powerful tail, which is their usual weapon of defence, but also from the claws of their hind feet, with which they have been known to lacerate the bodies of their assailants in a shocking manner. But, unless when thus driven to make use of such powers of self-defence as they possess, they are perfectly harmless and even timid; and, when domesticated, are not in the least mischievous. In several collections in this country, and particularly in the Royal Park at Windsor, from which the specimens in the Menagerie were obtained, they have become almost naturalized, and appear to be but little affected by the change of climate. When confined in a small enclosure, they uniformly make their path round its circuit, seldom crossing it or passing in any other direction except for the purpose of procuring their food. Their whole appearance, and especially their mode of progression, is singularly curious and even to a certain extent ludicrous.

THE AFRICAN PORCUPINE.

But for these shades of colour, or for any other, we should look in vain in the animal of the Tower Menagerie, which, in consequence of a particular conformation, not unfrequent in some species of animals, and occasionally met with even in the human race, is perfectly and purely white. In order to explain this phenomenon, which is one of the most curious, but at the same time one of the most simple in physiology, it is necessary to observe that there exists beneath the epidermis, or outer covering of the skin, both in man and animals, a peculiar membrane of very fine and delicate texture, which is scarcely visible in the European but sufficiently obvious in the Negro, termed by anatomists the rete mucosum. In this net-work is secreted, from the extremities of the minute vessels which terminate upon its surface, a mucous substance which varies in colour according to the complexion of the individual, of the varieties in which it is the immediate cause; and from the substance thus secreted the colouring matter o

to familiarity on the part of his keepers, but treats them with as much distance as the most perfect strangers; and although he will sometimes appear playful and good tempered, yet they know him too well to trust themselves within his clutch.

Our birds are commonly allowed three dozen of small live plaice each per day.

The extent of muscular power which these serpents possess in common with the Boas is truly wonderful. To the smaller among them the lesser quadrupeds and even birds fall an easy prey; but the larger, when excited by the stimulus of hunger, are capable of crushing within their spiral folds the largest and most powerful of beasts. The sturdy buffalo and the agile stag become alike the victims of their fatal embrace; and the bulk of these animals presents but little obstacle to their being swallowed entire by the tremendous reptile, which crushes them as it were into a mass, lubricates them with the fetid mucus secreted in its stomach, and then slowly distending its jaws and ?sophagus to an extent proportioned to the magnitude of the object to be devoured, and frequently exceeding by many times its own previous size, swallows it by one gradual and long-continued effort.

The Bornean Bear is perhaps somewhat shorter in his proportions than the rest of the group, and the great proportional breadth of his head extends also to the neck and body. The claws are very long, strongly arched, and very gradually attenuated to the point, which is transversely truncated and chiefly fitted for digging the earth; but probably also enabling it to climb with great agility. The fur is short and glistening, somewhat rigid, but closely applied to the skin, and smooth to the touch. On the body, head, and extremities, the Bornean Bear has the same pure, saturated,[135] jet-black tint which is observed in the Malayan. The muzzle, including the region of the eyes, has a yellowish brown colour; and the anterior part of the neck is marked by a large broad patch of a more vivid and nearly orange tint, which is of an irregular quadrangular form, and deeply notched above. The difference in the form and colour of this patch constitutes the chief distinction between the present animal and the Malayan speci

ble strength. The whole body is clothed with long, thick, and soft hair; and its general shape, notwithstanding its intimate connexion with the Bears, and its short and thickset proportions, is not without a certain degree of elegance and lightness.

It is on this account that we feel it incumbent upon us, notwithstanding all that has been written on the subject, to dwell with some little detail on the natural history of this singular animal; but we shall nevertheless endeavour to compress our observations within the smallest possible compass. We shall commence as usual with his zoological characters, and shall then take a glance at his habits, such as they appear in a pure state of nature, unfettered by any laws but those of necessity, and uncontrolled except by the inevitable influence of the circumstances in which he is placed. And lastly we shall view him when under the control of man, and reduced to that half-domesticated condition to which even his stubborn nature is bowed by the application of those means which man alone can employ, and by which he maintains his ascendancy as undisputed lord of the creation over the mightiest even more effectually than over the meanest of its works.