Of profane authors, Herodotus is the first who notices this animal, but his account is far from accurate: the size he states as large as the biggest ox. That the animal was sacred, in some parts at least, appears from Herodotus, who says:--"Those which are found in the district of Paprennis are sacred, but in other parts of Egypt they are not considered in the same light." Aristotle makes it no bigger than an ass; Diodorus, an elephant; Pliny ascribes to it the tail and teeth of a boar, adding, that helmets and bucklers are made of the skin. Hippopotami figured in the triumphal processions of the Roman conquerors on their return home. M. Scaurus exhibited five crocodiles and an Hippopotamus; and Augustus one in his triumph over Cleopatra. Antoninus exhibited Hippopotami, with lions and other animals; Commodus no less than five, some of which he slew with his own hand. Heliogabalus, and the third Gordian, also exhibited Hippopotami. The Hippopotamus of the London Zoological Society was joined by his mate, the more juvenile "Adhela," in 1853. Two Hippopotami have lately been born in Europe; one in the Garden of Plants, at Paris, in 1858; and another in the Zoological Gardens at Amsterdam, in 1866. With regard to the alleged disappearance of the Hippopotamus from Lower Egypt, Cuvier remarks, that the French savans attached to the Expedition to Egypt, who ascended the Nile above Syene, did not meet with one. In some of the rivers of Liberia, and other parts, perhaps, of Western Africa, a second species of Hippopotamus exists, and is proved to be a very distinct animal. We have yet to glance at the Hippopotami of a former world. Many species are recognised in the fossil remains of Europe and Asia as formerly existing in England and in France. Cuvier detected bones of the Hippopotamus among the fossil wealth of the Great Kirkdale Cavern in Yorkshire, in 1821. They have also been found in France, and especially in the Sewatick Hills in India. In the Museum of the London Zoological Society are two skulls of Hippopotami--one fossil. This measures two feet three inches, and allowing for skin and lip, two feet six inches. Now, as the head is about one-fifth the length of the body, without the tail, the full-grown animal would be little, if any, short of fifteen feet from nose to tail--a size worthy the description of the Behemoth. We may here add, that Burckhardt, in his "Travels in Nubia," describes the voice of the Hippopotamus as a hard and heavy sound, like the creaking or groaning of a large wooden door. This noise, he says, is made when the animal raises his huge head out of the water, and when he retires into it again. FOOTNOTE: [7] Professor Owen. LION-TALK.