410 



THE POPULAR SCIENCE MONTHLY. 



may have recalled to mind, more or less, the appearance presented by- 

 some hornless deer. Their chief mode of locomotion (that jnmping 

 action necessitated by the great length of the hind-limbs) must be 

 familiar to all who have observed them living, and also, very probably, 

 the singular mode in which the young are carried in a pouch of skin 

 in the front of the belly of the mother. 



But " What is a kangaroo ?" The question will raise in the minds 

 of those who are not naturalists the imagre of some familiar circum- 





Fig. 1. Kangaroo {Macropus). 



Stances like those just referred to. But such image will afford no real 

 ansAver to the question. To arrive at such an answer it is necessary 

 to estimate correctly in what relation the kangaroo stands to other 



