its upper part at the base of its skull. [Illustration: BRAIN OF THE GREAT KANGAROO.] The young Kangaroo, when very small, and almost transparent, comes down from the womb into a canal, and gets into the uro-genital sac, as it is termed. Thence it is taken by the mother, and put into the marsupium, or pouch, where it fixes on to a nipple, and holds on. As the little one is ever “at the breast,” it might have any quantity of milk go the wrong way, but this is provided for by the upper part of the organ of voice (the larynx) being prolonged at the back of the nose, above the level of the long nipple. Breathing goes on through the nose, and swallowing safely through the gullet. THE HARE KANGAROO.[89]--THE TURATT. There are many kinds of Kangaroos, and one of them, which is solitary and nocturnal in its habits, is called the Hare Kangaroo, of which Mr. Gould writes:--“The name of Hare Kangaroo has been given to this species as much from its similarity of form and size to the common Hare as from its similarity of habits. I usually found it solitary, and sitting alone on a well-formed seat under the stalk of a tuft of grass on the open plains. For a short distance, its fleetness is beyond that of all others of its group that I have had an opportunity of coursing. Its powers of leaping are also equally extraordinary. While out on the plains in South Australia, I started a Hare Kangaroo before two fleet Dogs. After running to the distance of a quarter of a mile, it suddenly doubled and came back to me, the Dogs following close to its heels. I stood perfectly still, and the animal had arrived within twenty feet before it observed me, when, to my astonishment, instead of branching off to the right or to the left, it bounded clear over my head, and, on descending to the ground, I was able to make a successful shot, by which it was procured. It has the end of the nose covered with a fine set of hairs. The fur is long and soft and very hare-like, and it has small limbs and sharply-pointed nails.” THE GREAT ROCK KANGAROO. This is very different from its timid congener just described. It inhabits the sterile and rocky mountains in the south-eastern part of Australia. It scampers about the rocks, and readily escapes Dogs, and it is a dangerous and formidable animal to approach, for it will, if closely pressed, turn on its enemy, and force him over the rocks. It bites, and uses its strong fore-arms very efficiently. It is called _Macropus robustus_, and is often found in companies of four or six; and it has more powerful fore-limbs than the Great Kangaroo, which is even sometimes the smaller of the two. It has the part of the nose called the muffle without hair.