We know that the roar of the lion--that is, of the hungry lion--is considered the most terrible of cries, which inspires all the animals, and even man, with unconquerable dread. It appears, however, that man--to say nothing of his dogs--speedily grows accustomed to it, and that the lion, in his turn, cannot be frightened by the barking of the latter. A very curious fact, remarked by Livingstone, is the singular resemblance of the lion's roar to the cry of the ostrich. "I have carefully inquired," says the great African traveller, "the opinion of Europeans who have heard both. I have asked them if they could discover the least difference between the roar of the one and the cry of the other. They have all informed me that they could not perceive any, at whatever distance the animal might be placed. The voice of the lion, generally, is deeper than the ostrich's; but up to the present time I have only been able to distinguish it with certainty because it is heard during the day, and the ostrich's during the night." Lions were formerly common enough in all Southern Asia, Persia, Asia Minor, and even Greece. They long ago disappeared from these countries, and are rarely met with now-a-days in Hindostan. The Indian lion is smaller than his African congener; his mane is shorter and less abundant, and several naturalists signalize him as a distinct species, intermediary between the true African lion and the American puma. There are three varieties of Asiatic lions: the Bengal, the Persian or Arabian, and the maneless lion of Goojerat--the latter confined to a very narrow district. The African "king of beasts" is spread over the entire continent from the Mediterranean to the Cape of Good Hope; but the species includes three kinds: the Barbary lion, with a deep yellowish-brown fur and a full flowing mane; the Senegal, whose fur is of a brighter yellow, and whose mane thinner; and the Cape, of which there are two varieties, one brown, the other yellowish; the former being the fiercer and more powerful animal. A lion of the largest size measures about eight feet from the nose to the tail, and the tail itself about four feet. The male has usually a thick shaggy mane; the head is large, with rounded ears, and the face covered with short close hair; great strength and muscular force distinguish his conformation; and the tail terminates in a tuft of hair, which is not fully developed until he is six or seven years old.