also digs bodies out of their graves, on which account, though very different from each other, they have often been confounded. The hyæna is a solitary, silent, savage animal, which, though stronger and more powerful than the jackal, is not so obnoxious, and is contented with devouring the dead, without troubling the living, while all travellers complain of the cries, thefts, and gluttony of the jackal, who unites the impudence of the dog with the cowardice of the wolf, and participating of the nature of each, seems to be an odious animal composed of all the bad qualities of both.[B] [Footnote B: There is one remarkable circumstance respecting the skin of the jackal, which Buffon has omitted; it is a great spot of a dark grey colour, formed like a lancet, the point of which is turned towards the tail of the animal; this spot is of a darker brown when the jackal is young. Sparman saw the foetus of a jackal which was of a beautiful colour; but the spot on the back was of a deep brown.] THE ISATIS. If a number of general resemblances, and a perfect conformity of internal parts, were sufficient to constitute unity of species, the wolf, the fox, and the dog, would form but one, for the resemblances are more numerous than their differences, and their internal parts are entirely similar. These three animals, however, form three species, not only distinct but sufficiently distant to admit intermediate ones. The jackal is an intermediate species between the dog and the wolf; and the isatis finds room between the fox and the dog. This animal has till now been regarded as a variety in the fox species, but the description given by Gmelin clearly proves them to be two different species. The isatis is very common in all the northern countries adjacent to the frozen sea, and but rarely found on this side the 69th degree of latitude. He perfectly resembles the fox in the form of his body, and the length of his tail; but his head is more like that of a dog. His hair is softer than that of the common fox, and is sometimes white, and sometimes of a bluish ash. His head is short in proportion to his body; it is broad towards the neck, and terminates in a sharp-pointed snout. His ears are almost round. He has five toes and five claws on the fore-feet, and only four on the hind ones. The penis of the male is scarcely thicker than a quill; the testicles are as big as almonds, and so thickly covered with hair that it is difficult to perceive them. The hair on every part of the body is about two inches long, smooth and soft as wool. The nostrils, and under lip, have no hair on them, and the skin is black. The stomach, intestines, viscera, and spermatic vessels of both male and female, are like those of the dog, and the whole skeleton entirely resembles that of a fox.