_^ 



-GEOLOGICAL OBSERVATIONS 



ON THE VOLCANIC ISLANDS AND PARTS OF SOUTH AMERICA 

 VISITED DURING THE VOYAGE OF H. M. S. 'BEAGLE' 



BY 



CHARLES DARWIN, M. A., F. R. S., Etc. 



AUTHOR OF 'THE STRUCTURE AND DISTRIBUTION OF CORAL REEFS, 

 'the ORIGIN OF SPECIES,' ETC. 



THIRD EDITION 

 WITH MAPS AND ILLUSTRATIONS 



NEW YORK 



D. APPLETON AND COMPANY 



1891 



