NATURE SERIES. 



THE COMMON FROG 



ST. GEORGE MIVART, F.R.S., etc., 



LECTURER ON COMPARATIVE ANATOMY AT ST. MARY's HOSPITAL, 

 AUTHOR OF "the GENESIS OF SPECIES," "ELEMENTARY ANATOMY." ETC. 



WITH NUMEROUS ILLUSTRATIONS. 



MACMILLAN AND CO. 



1881 ~;^ 



[The Right nf Translation and Reproduction is reset ved.'] 



