201 



XXII. Contributions to the Geology and Physical 

 Geography of the Lower Amazonas 



BY CH. FEED. HAETT, 

 I'rof. of Geology in Cornell University. 



[Mead before this Society, January 2, 1874.] 



THE ERERE-MONTE-ALEGRE DISTRICT AND THE TABLE-TOPPED 



HILLS. 



WOODED PLA NS 



VICINITY OF 



MONTE ALEGRE 



AND ERERE. 



WOODED PLAINS 



^ TNTE ALEGRE 



fil(> ALLUVIAL PLAINS 



AscENDiXG the Amazonas from Para, the topographical features 

 observable from the river for the first 300 miles, are very monoto- 

 nous. With the exception of the immediate vicinity of Para, 

 Breves and Gurupa, where the land rises to a height of twenty to 

 thirty feet above tide-level, the country is perfectly flat, scarcely 

 above water even in tlie dry season, and of recent origin, "Where 



(26) .TANUART, 1874. 



BUL. BCF. SOC. NAT. SCI. 



