THE FROG: 



AN INTRODUCTION TO 



ANATOMY, HISTOLOGY, AND 



EMBRYOLaCY. 



< •■;-/./ , 



BY THE LATE\6'7-//^^gl 



A. MILNES MARSHALL, M.Di^D.Sc., M.A., F.R.S., 



FORMERLY FELLOW OF ST. JOHN'S COLLEGE, CAMBRIDGE ; PROFESSOR IN THE 



VICTORIA UNIVERSITY ; BEYER PROFESSOR OF ZOOLOGY 



IS OWENS COLLEGE 



EDITED BV 



G. HERBERT FOWLER, B.A., Ph.D., 



LATE BERKELEY FELLOW OF THE OWENS COLLEGE, MANCHESTER ; ASSISTANT 

 FROFESSOR OF ZOOLOGY, UNIVERSITY COLLEGE, LONDON 



SIXTH EDITION 



REVISED AND ILLUSTRATED 



NEW YORK 



MACMILLAN AND CO. 



1896 



