DOGS AND BEARS. 



197 



moreover, the hyaenas and cats (under which name we 

 include lions, tigers, and their allies) are evidently 

 derived from a stock more or less nearly related to the 

 earlier civets, we are enabled to trace back all these 

 wonderfully different types of carnivorous animals to 

 a very few ancestral stocks. 



A like pedigree has been already traced out in many 

 other groups of animals, and as our knowledge (imper- 

 fect as it must necessarily always remain) gradually 

 increases by slow, although we hope sure, steps, we 

 shall look forward to do the same for other groups, 

 till we find the whole of the animals of the present 

 day forming the twigs of one huge ancestral trunk. 



FIG. 60.- -Outer and upper views of the right lower flesh-tooth of the Amphicyon. 

 (After Kittl.) 



