CHAPTER, VIII 



DARWIN'S PROBLEM 



The Galapagos Islands lie on the equator, six hundred 

 miles from the western coast of South America. 



There are ten islands in the group, and here Darwin found 

 animals unheard-of elsewhere in the world tortoises by the 



Culpepper I. 



WenmanL 



Naorborouah I. V5 

 Albermarle I. 



60 Miles 



QzAbinqdon I. 



Bindloes I. 



Tower I. 



Indefatiadble 1. 



% Jjjj* 

 Barnnytonl. Chatham I. 



Charles I. Hood's 1. 



THE GALAPAGOS ISLANDS 



thousand, that weighed one hundred pounds apiece and over. 

 " I frequently got on their backs," he writes, " and then giv- 

 ing a few raps on the hinder part of their shells, they would 

 rise up and walk away ; but I found it very difficult to keep 



49 



