

A JUNIOR COURSE OF 



PRACTICAL ZOOLOGY 



BY THE LATE 



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



PROFESSOR IN THE VICTORIA UNIVERSITY ; BEYER PROFESSOR OF ZOOLOGY IN OWENS 

 COLLEGE, MANCHESTER J FORMERLY FELLOW OF ST. JOHN'S COLLEGE, CAMBRIDGE 



AND THE LATE 



C. HERBERT HURST, Ph.D. 



LECTURER IN THE VICTORIA UNIVERSITY J DEMONSTRATOR AND ASSISTANT 

 LECTURER IN ZOOLOGY IN OWENS COLLEGE, MANCHESTER 



NINTH EDITION 

 REVISED BY F. W. GAMBLE, D.Sc, F.RS. 



MASON PROFESSOR OF ZOOLOGY AND COMPARATIVE ANATOMY IN THE 

 UNIVERSITY OF BIRMINGHAM 



LONDON 



JOHN MURRAY, ALBEMARLE STREET, W, 



1920 



