OUTLINES 



OF 



COMPARATIVE PHYSIOLOGY, 



TOUCHING 



THE STRUCTURE AND DEVELOPMENT 



OF THE 



RACES OF ANIMALS, LIVING AND EXTINCT. 



FOR THE USE OF SCHOOLS AND COLLEGES. 

 BY 



LOUIS AGASSIZ 



AND 



A. A. GOULD. 



IStritefc from tl)e Kebisefc ISUittott, anlr greatls jnlargeD, 



BY 



THOMAS WRIGHT, M D. 



WITH 390 ILLUSTRATIONS. 



LONDON: 



HELL & DALDY, G, YORK STREET, COVENT GARDEN, 

 AND 186, FLEET STKEET. 



1867. 



