SUMMARY OF THE CONTENTS OF VOL. I. 291 



Atlantic portion of the United States of North America. The low 

 province of Chiquitos ; small swellings of the ground constitute 

 the division between the waters of the Guapore and Aguapehi in 

 15 and 17 S. lat., and between the river basins of the Orinoco 

 and the Rio Negro in 2 and 3 N. lat. . . . 3739 



Continuation of the chain of the Andes north of the isthmus of Panama 

 (through the Aztec country, where Popocatepetl, 16626 French, or 

 17720 English feet high, has very recently been again ascended by 

 Captain Stone) in the Sierra de las Grullas and the Ilocky Moun- 

 tains. Excellent scientific investigations of Captain Fremont. The 

 longest barometric levelling ever made, showing a profile or vertical 

 section of the earth's surface through a space of 28 of longitude. 

 Culminating point of the route from the coast of the Atlantic to 

 the Pacific. " South Pass," south of the Wind River Mountains. 

 Swelling of the ground in the Great Basin. Long contested 

 existence of the Timpanogos Lake. Coast Chain, Maritime Alps, 

 or Sierra Nevada of California. Volcanic eruptions. Falls of the 

 Columbia 3950 



General considerations on the contrasts shown by the spaces included 

 between the central chain (the Rocky Mountains) and the diverging 

 chains on the east and west (the Alleghanies and the Sierra Nevada 

 of California) ; hypsometric characters of the low eastern space, 

 which is only from 400 to 600 French, or 426 to 639 English feet 

 above the level of the sea, and of the arid uninhabited plain 5000 

 or 6000 (5330 to 6400 English) feet above the same level, called 

 the Great Basin. Sources of the Mississipi in the Lake of Istaca 

 according to Nicollet's highly meritorious researches. Buffalo 

 country; Goinara's assertion of buffaloes having been formerly 

 tamed in the northern part of Mexico .... 50 55 



Retrospective view of the chain of the Andes from the Rocks of 



