MANUAL OF ZOOLOGY 



BY 



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



PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF OTAGO, 

 DUNEDIN, N. Z. 



AND 



WILLIAM A. HASWELL, M.A., D.Sc, F.R.S. 



PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF SYDNEY, N.S.W. 



REVISED AND ADAPTED FOR THE USE OF AMERICAN 

 SCHOOLS AND COLLEGES 



Neto gorfe 

 THE MACMILLAN COMPANY 



LONDON : MACMILLAN & CO., LTD. 

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