

THE INTERNATIONAL SCIENTIFIC SERIES. 



AN INTRODUCTION 



TO THE 



STUDY OF ZOOLOGY, 



ILLUSTRATED BY THE 



CKAYFISH. 



BY 



T. II. HUXLEY, F. R. S. 



WITH EIGHTY-TWO ILLUSTRATIONS. 



NEW YORK: 

 D. APPLETON AND COMPANY^ 



72 FIFTH AVENUE. 



1895. 



