248 



J. C. Branner — ^Eolian Sandstones of 



rock is found at considerable heights above the sea." He 

 also says that " raised beaches, therefore, seem only to exist on 

 basalt, and in close connection with a phonolite peak." 



I am unable to see that basalt or phonolite have anything to 

 do with the matter. The gross structure of the sandstone 

 shows that its material was originally deposited in the form 

 of sand-dunes ; its beds standing at all angles at which loose 

 sand can stand (see figs. 1 and 2). A microscopic examination 



2. 



1. 



^a^Q-fa^^ 



An exposure on Ilha Raza. 



shows that this material has been consolidated by the interstitial 

 deposition of carbonate of lime. 



The rock varies somewhat in lithologic characters, being in 

 some places so open and porous that it may be crumbled in the 



d 



SZ Atsy^* 



iEolian sandstone in the Bahia do Sueste. 



fingers, and in others so hard and compact that when struck 

 with the hammer it rings like " clinkstone." In places it is 



