OUTLINES 



DENTIST, 



PROFESSIONAL BUILDING, 

 07 1881 CHESTNUT ST., ROOM 71 



PHiMDBLPHIA. 



COMPARATIVE ANATOMY 



AND 



MEDICAL ZOOLOGY. 



BY 



HARRISON i ALLEN, M.D., 



WOFESSOR OF ZOOLOGY AND COMPARATIVE 43 A * MT IN THK UNIVERSITY OF PENNSYLVANIA. 



SECOND EDITION. 



PHILADELPHIA: 



J. B. LIPPHSTCOTT & CO. 



1874. 



