AN ELEMENTARY COURSE 



OF 



PRACTICAL ZOOLOGY 



BY THE LATE 



T. JEFFERY PARKER, D.Sc, F.R.S. 



PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF OTAGO 

 DUNEDIN, NEW ZEALAND 



AND 



W. N. PARKER, PH.D. 



PROFESSOR OF ZOOLOGY AT THE UNIVERSITY COLLEGE OF SOUTH WALES 

 AND MONMOUTHSHIRE, IN THE UNIVERSITY OF WALES 



FIFTH EDITION 

 With One Hundred and Sixty-eight Illustrations 



MACMILLAN AND CO., LIMITED 

 ST. MARTIN'S STREET, LONDON 



1922 



