FIBER. 307 



watchful, and are not often seen by day, but towards evening they 

 become active and swim about in the vicinity of their, homes, disap- 

 pearing with a'loud splash beneath the surface if alarmed. Immense 

 numbers of muskrat skins are sold every year, and made into clothing 

 or linings for garments. 



61. Fiber. 



Fiber G. Cuv., Lecons d'Anat. Comp., i, 1800, tab. i. Type Castor 

 zibcthicus Linnaeus. 



FIG. 55. FIBER ZIBETHICUS PALLIDUS. 



No. 5422 Field Columbian Mus. Coll. Nat. size. 



