Among the earliest visitors was Professor Owen, who first saw the Hippopotamus lying on its side in the straw, with its head resting against the chair in which sat the swarthy attendant. It now and then grunted softly, and, lazily opening its thick, smooth eyelids, leered at its keeper with a singular protruding movement of the eyeball from the prominent socket, showing an unusual proportion of the white. The retraction of the eyeball was accompanied by a simultaneous rolling obliquely downwards, or inwards, or forwards. The young animal, then ten months' old, was seven feet long, and six and a-half in girth at the middle of the barrel-shaped trunk, supported, clear of the ground, on very short and thick legs, each terminated by four spreading hoofs, the two middle ones being the largest, and answering to those in the hog. The naked hide, covering the broad back and sides, was of a dark, india-rubber colour, with numerous fine wrinkles crossing each other, but disposed almost transversely. The beast had just left its bath, when a glistening secretion gave the hide, in the sunshine, a very peculiar aspect. When the animal was younger, the secretion had a reddish colour, and the whole surface of the hide became painted over with it every time he quitted his bath.

The ears, which were very short, conical, and fringed with hairs, it moved about with much vivacity. The skin around them was of a light reddish-brown colour, and almost flesh-coloured round the eyelids, which defended the prominent eyes, which had a few short hairs on the margin of the upper lid. The colour of the iris was of a dark brown. The nostrils, situated on prominences, which the animal had the power of raising on the upper part of the broad and massive muzzle, were short oblique slits, guarded by two valves, which were opened and closed spontaneously, like the eyelids. The movements of these apertures were most conspicuous when the beast was in the bath.

The wide mouth was chiefly remarkable for the upward curve of its angles towards the eyes, giving a quaintly comic expression to the massive countenance. The short and small milk-tusks projected a little, and the minute incisors appeared to be sunk in pits of the thick gums; but the animal would not permit any close examination of the teeth, withdrawing his head from the attempt, and then threatening to bite. The muzzle was beset with short bristles, split into tufts or pencils of hairs; and fine and short hairs were scattered all over the back and sides. The tail was not long, rather flattened and tapering to an obtuse point.

We may here observe that, at certain moments, the whole aspect of the head suggested to one the idea of what may have been the semblance of some of the gigantic extinct Batrachians (as sirens), the relics of a former world, whose fossil bones in the galleries of Palæontology in the British Museum excite our special wonder.

After lying about an hour, now and then raising its head, and swivelling its eyeballs towards the keeper, or playfully opening its huge mouth, and threatening to bite the leg of the chair on which the keeper sat, the Hippopotamus rose, and walked very slowly about its room, and then uttered a loud and short harsh snort four or five times in quick succession, reminding one of the snort of a horse, and ending with an explosive sound, like a bark. The keeper understood the language—the animal desired to return to its bath.

The Hippopotamus carried its head rather depressed, reminding one of a large prize hog, but with a breadth of muzzle and other features peculiarly its own. The keeper opened the door leading into a paddock, and walked thence to the bath, the Hippopotamus following, like a dog, close to his heels. On arriving at the bath-room, the animal descended with some deliberation the flight of low steps leading into the water, stooped and drank a little, dipped his head under, and then plunged forwards. The creature seemed inspired with new life and activity. Sinking to the bottom of the bath, and moving about submerged for a while, it suddenly rose with a bound almost bodily out of the water. Splashing back, it commenced swimming and plunging about, rolling from side to side, taking in mouthfuls of water and spirting them out again, raising every now and then its huge and grotesque head, and biting the woodwork of the margin of the bath. The broad rounded back of the animal being now chiefly in view, it seemed a much larger object than when out of the water.

After half an hour spent in this amusement, the Hippopotamus quitted the water at the call of its keeper, and followed him back to the sleeping-room, which was well bedded with straw, and where a stuffed sack was provided for its pillow, of which the animal, having a very short neck, thicker than the head, availed itself when it slept. When awake, it was very impatient of any absence of its favourite attendant. It would rise on its hind legs, and threaten to break down the wooden fence, by butting and pushing against it in a way very significant of its great muscular force. The animal appeared to be in perfect health, and breathed, when at rest, slowly and regularly, from three to four times in a minute. Its food was now a kind of porridge, of milk and maize-meat, it being more than half weaned from milk diet. Its appetite had been in no respect diminished by the confinement and inconvenience of the sea voyage, or by change of climate. All observers appear to have agreed that, to see the Hippopotamus rightly, is to see him in the water. There his activity is only surpassed by that of the otter or the seal. Such was one of the opportunities afforded to zoologists for "studying this most remarkable and interesting African mammal, of which no living specimen had been seen in Europe since the period when Hippopotami were last exhibited by the third Gordian in the amphitheatre of imperial Rome." [7]

It is now time to glance at the general economy of the Hippopotamus, as he is seen in his native rivers and wilds. In early days, as his Roman name imports, it was usual to consider him as a species of horse, inhabiting rivers and marshy grounds, and, in a more especial manner, the denizen of the Nile. The genus is placed by Linnæus among his belluæ, between equus and sus. The skeleton approaches that of the ox and of the hog, but it presents differences from that of any other animal.

The Hippopotamus is found not only in the Nile, but in the rivers of southern Africa. In the former stream of marvels, Hasselquist relates that "the oftener the River Horse goes on shore, the better hope have the Egyptians of a sufficient swelling or increase of the Nile." Again, they say that the River Horse is an inveterate enemy to the crocodile, and kills it whenever he meets it; adding that he does much damage to the Egyptians in those places he frequents. He goes on shore, and, in a short space of time, destroys an entire field of corn or clover, not leaving the least verdure, for he is very voracious.

Yet neither of these stories is so marvellous as that which a sailor related to Dampier, the old traveller:—"I have seen," says the mariner, "one of these animals open its jaws, and, seizing a boat between its teeth, at one bite sink it to the bottom. I have seen it, on another occasion, place itself under one of our boats, and, rising under it, overset it with six men who were in it, but who, however, happily received no other injury."