170 



SEE— FURTHER RESEARCHES ON 



[April 24, 



Fk;. I. Relief Map of South America. (From Frye's Complete Geog- 

 raphy, by permission of Ginn & Co., Publishers.) Notice that the Andes are 

 a mighty wall erected by the Pacilic C)cean along its border. Professor 

 Charles Burkhalter, Director of the Chabot Observatory, Oakland, kindly 

 suggested the use of these relief maps, which are well suited for bringing 

 out the leading characteristics of the different continents. 



