50 THE ZOOLOGIST. 



attached, it is pulled off, it cannot be replaced, even by the 

 mother, for the end of the nipple now being flaccid instead of 

 hard cannot well be inserted into the mouth of the little one. 



The illustrations show the foetus about two days before birth 

 (Plate I. fig. 2) ; also the young one about life-size, just as it had 

 been born, but not transfixed to the nipple (Plate I. fig. 3) ; and 

 the nipple with the hardened point just ready for the young one 

 (Plate I. fig. 3). It will be noticed how immature the little one 

 is, and also that its fore legs are much larger than its hind ones. 

 I have the specimens here shown in spirits. It has not yet 

 been proved, as far as I am aware of, how long after birth the 

 young one is able to draw nourishment for itself — probably three 

 months. 



