The Study 



of 



Animal Life 



BY 



J. ARTHUR THOMSON M.A., F.RS.E. 



LECTURER ON ZOOLOGY, SCHOOL OF MEDipiNE, EDINBURGH J 



JOINT-AUTHOR OF 'THE EVOLUTION OF SEX* 



AUTHOR OF 'OUTLINES OF ZOOLOGY* 



WITH ILLUSTRATIONS 



NEW YORK 



CHARLES SCRIBNER'S SONS 



743 & 745 BROADWAY 



1892 



