TEXT-BOOK OF ZOOLOGY 



BY 



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



PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF OTA(iO. DINKDIX. X.7. 



AND 



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



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



IN TWO VOLUME* 

 VOL. I 



WITH ILLUSTRATIONS 



\ 



ILonnon 



MACMILLAN AND CO., LIMITED 



NEW YORK: THE MACMILLAN COMPANY 



1897 



All rights reserved 



