OL 



SERIES. 



:RST BOOKS OF NATURAL HISTORY. 



ELEMENTS OF HERPETOLOG: 



AND OF 



ICHTHYOLOGY: 



PREPARED FOR THE USE OF 



SCHOOLS AND COLLEGES, 



BY 



W. S. \V. RUSCI1ENBERGER, M.D. 



Surgeon in the U. S. Navy; ITello'w of the College of Physicians; lie 

 Member of the Philadelphia Medical Society ; Member of the 

 Academy of Natural Sciences of Philadelphia, Sec. &o. 



FROIW THE TEXT OF 



MILNE EDWARDS, AND ACHILLE COMTE, 



PROFESSORS OF NATURAL HISTORY IN THE COLLEGES 

 '- OF HENRI IV, AND CHARLEMAGNE. 



WITH PLATES. 



PHILADELPHIA: 



GRIGG & ELLIOT, 



N T 0. 9 NORTH FOURTH STREET, 



1844. 



j 



