362 



GENERAL SCIENCE 



FIG. 322. Shearing Sheep, New South Wales, Australia. 



cipally those of the mulberry, and makes a cocoon from 



which the silk is obtained (Figure 323). 



Furs from wild and domesticated animals are exten- 

 sively used for cloth- 

 ing. The seal is the 

 most valuable fur- 

 bearing animal. 



Leather manufac- 

 ture is one of the 

 industries of any civi- 

 lized country. In the 

 United States there 

 are a large number 

 of manufacturing 



plants distributed through the states in the eastern part 



of our country. 



FIG. 323. Evolution of the Silkworm. 



