Kolbe, therefore, in affirming, that the hippopotamus lives in the sea, might possibly have copied Pliny, and not spoken from his own observations. Most other authors tell us, that this animal is only to be found in the fresh water lakes and in rivers, sometimes at their mouths, but oftener at a great distance from the sea. There are even travellers, who, like Merollo, are surprised, that the hippopotamus should have been called the sea-horse, because, say they, this animal cannot bear salt water. He commonly remains all day under water, and only quits it at night to graze upon land. The male and female rarely separate. Zerenghi caught both male and female the same day, and in the same ditch. Dutch travellers say, that they bring forth three or four young at a time, but this fact appears to me very suspicious from the evidence which Zerenghi has mentioned. Besides, as the hippopotamus is of an enormous bulk, he is in the class of the elephant, rhinoceros, whale, and all other large animals, who bring forth but one at a time; and this analogy appears to me more certain than all the suppositious testimonies of different travellers. SUPPLEMENT. I have been informed by Mr. Bruce that in his travels through Africa he frequently saw hippopotami in Lake Tzana, in Upper Abyssinia, near the sources of the Nile; that in this lake these animals are more numerous than in any other part of the world, and that he saw some which were at least twenty feet in length. Dr. Klockner, in his translation of the present work, printed at Amsterdam, says, he is surprised that M. de Buffon should have taken no notice of a passage in Diodorus Siculus, respecting the hippopotamus, in which that author observes, "that among the various animals produced by the Nile, the crocodile and hippopotamus deserve the most particular attention; the latter is five cubits long; he has cloven feet like ruminating animals, and in each of his jaws he has three large tusks, somewhat like those of a wild boar; while the prodigious size of his body resembles that of an elephant. His skin is exceedingly hard and strong, possibly more so than that of any other animal. He is amphibious, and remains as perfectly at ease under water as upon land; he, however, comes on shore in the night to seek pasture, and if the species were numerous, they would prove very destructive to the cultivated lands of Egypt. To hunt this animal a number of men assemble, and going in several boats attack him; when once fastened to a rope, they leave him till he is exhausted with plunging and the loss of blood: his flesh is hard, and not good for digestion." Dr. Klockner has also given an account of the manner in which the skin was prepared of the one sent from the Cape of Good Hope, and is now in the Prince of Orange's cabinet, the dimensions of which corresponded very nearly with those of Zerenghi's. He likewise adds, that he was informed by the