201 



XXII. Contributions to the Geology and Physical 

 Geography of the Lower Amazonas 



BY CH. FRED. IIARTT, 

 Irof. of Geology in Cornell University. 



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



THE ERER£-M0NTE-ALEGRE DISTRICT AND THE TABLE-TOPPED 



HILLS. 



V/OODED PLAINS 







VICINITY OF 



^^■'^^ MONTE ALEGRE 



_ 'lAND ERERE. 



' WOODED PLAINS 



■••Monte alegre 



jU" ALLUVIAL PLAINS 



AsCEXDiXG the Amazonas from Para, the topographical features 

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

 nous, AVith the exception of the immediate vicinity of Para, 

 Breves and Gurujia, 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 (he drv season, and of recent origin. Where 



BVL. BUF. SOC. NAT. SCt. 



(26) 



.lANfARY, 18T1. 



