209 

 ORDER, RODENTIA. 



844. CASTOR FIBER, L. 



a. Small beaver, preserved in spirit. 



Note. This specimen appears to have been taken soon after its birth. 

 See Per. Mat. Med., vol. ii., pt. ii., p. 821, fig. 130. 



6. Preputial follicles. (Russian castorenm.) 



Note. This specimen was purchased of Homer & Faukes, at forty 

 shillings an ounce, on September 9th, 1835. It is the specimen referred 

 to by Pereira. See Per. Mat. Med., vol. ii., pt. ii., p. 823. 



c. Resinous Russian castoreum. 



Note. This specimen consists of larger sacs than specimen b. 



d. Bucharian castoreum. 



e. Siberian castoreum. 



/. North American castoreum. 



g. Spurious castoreum, the sacs being stuffed with hay. 



h. Oil sacs of Russian beaver. 



t. Oil sacs of American beaver. 



Note. For a full account of the varieties of castoreum, see Per. Mat. 

 Med., vol. ii., pt. ii., pp. 823-826. 



845. MYGALE MUSCOVITA, Qeoffr. (Mutk Rat, Desman.) 



a. Tail. 



Note. This object is used as a perfume in Russia. See Moquin- 

 Tandon, Med. ZooL, p. 110. 



