. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 322 MARSUPIALIA. has begun to be formed. Qy.—Will the foetus seize the larger nipple as the readiest, or be directed to another more proportionate to the size of its mouth ? " Oct. 4th.—38th day. The keeper has observed the female putting her nose into the pouch, and licking the entry. She was exa- mined at six in the evening ; there was a slight increase of the brown secretion; the nipple formerly in use has diminished one-third in size ; the other nipples indicate no appearance of approaching parturition. " O
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 322 MARSUPIALIA. has begun to be formed. Qy.—Will the foetus seize the larger nipple as the readiest, or be directed to another more proportionate to the size of its mouth ? " Oct. 4th.—38th day. The keeper has observed the female putting her nose into the pouch, and licking the entry. She was exa- mined at six in the evening ; there was a slight increase of the brown secretion; the nipple formerly in use has diminished one-third in size ; the other nipples indicate no appearance of approaching parturition. " Oct. 5th.—39th day. The keeper exa- mined the pouch at seven this morning, and found there the young one attached to a nipple. On being made acquainted with this fact I re- paired to the Zoological Gardens, and examined the pouch. The new-born kangaroo (Jig. 140) was attached to the left superior nipple (fg. 140, «), to the point of which it adhered pretty Fig. New-born fcetus and left nipples, Macropvs major. firmly. It measured one inch from the mouth to the root of the tail, was quite naked, and co- vered by a thin semitransparent vascular integu- ment; the place of attachment of the umbilical chord was obscurely indicated by a longitudinal linear cicatrix. The fore-legs were longer and stronger than the hind ones, and the digits were provided with claws ; the toes were developed on the hind legs; the body was bent forward; and the short tail tucked in between the hind legs. This little animal breathed strongly, but slowly ; no direct act of sucking could be perceived. Such, after a gestation of thirty- eight days, is the condition of the new-born young of a species of Kangaroo, of which the adult, when standing erect on his hind feet and tail, can reach to the height of seven feet. The birth having taken place in the night, the mode of transference of the young to the pouch and nipple was not observed. The hypothesis of an internal passage from the uterus to th
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