498 



ZOOLOGY. 



Pig, 441.-Anatomy of tUe cornmon stuped 8^k. ^^^1^^^;^^,-^^^^^^'^, 

 trachea; IK, thyroid; *■ ^^"^"S';;;/'^ "peen Pa. pancreas; Od. oWdnct; 



porti« ; /, intestiiio. -Drawn by C. b. Mniot. 



