GNAWING ANIMAr.S— RODENTS 109 



So, for tlie fur and for the drug, tlie beaver lias been 

 incessantly pursued until it lias been almost exter- 

 minated from Europe, and the fur we now know as 

 beaver is obtained from the North American species 

 {Castor Canadensis). This species differs from the 









Fig. 33. — The Beaver {Cador fiber). (From a photo by 

 F. W. Bond.) 



European beaver which once inhabited Britain mainly 

 in having a much shorter nose. 



Castor fiber, the European beaver, is now found 

 on the banks of the large rivers of Europe, such as 

 the Danube and the Rhone, but it is getting more 



