342 



ANNUAL EEPORT SMITHSONIAN INSTITUTION, 19 30 



Another means of enabling visualization of a problem in con- 

 nection with the harvesting of the fur crop is the diagram on page 

 341 that shows the relative values of different sizes of beaver skins, 

 otherwise alike. 



•30 



*zo 



\ni 1911 111* mi 1^16 1917 isia 1919 m^o 1921 itJZ i-^zt »2» 1S2< i-y't i?»r 



1 



I 



I 



1 



AVKRAGE VAIUS 



•ts.oooL 



l5o,ocx> 



lis. 000 : 



Figure 10. — Number, average value, and total value of land otter skins produced in 

 Alaska from 1912 to 1927, Inclusive 



This should convince the most skeptical trapper that it is to his 

 interest so to conduct his trapping operations that the young and 

 small beavers are allowed to grow up before they are trapped, and 

 it points out the desirability of trying to develop trapping methods 

 and practices that will avoid the taking of the young animals, or, 

 if they are taken, of liberating them. 



