THE BAUXITE DEPOSITS OF ARKANSAS 



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depended upon. I may add, however, as a suggestion of possi- 

 ble utility that the red varieties are not all high in iron as one 

 might suppose ; some of the reddest examples found in Saline 

 county contain very little iron. 



Fig. I. Pistolitic Bauxite from near Little Rock. 



Some of the pisolites are solid and some of them are hollow ; 

 sometimes they are scattered through a more compact and homo- 

 geneous groundmass, and at other times they make up the body 

 of the rock and resemble a great mass of peas cemented 

 together. 



The accompanying illustration (Fig. i) shows a specimen of 

 the more pisolitic variety taken from the deposits in township 

 I south, 12 west, section 4, southwest quarter. 



