50 



ARTICLES MADE FROJI SANDSTONE. 



ARTICLES MADE FROM SANDSTONE. 



Griodstones. Several kinds of useful implements were 

 made from sandstone. The most important of these 

 were perhaps the grindstones, or metates and pestles 

 (Figs. 23, 24). These are sandstone slabs some eight- 

 een inches long, ten 

 inches wide, and from 

 two to six inches in 

 thickness. They have 

 a shallow concavity on 

 one of their flat sides. 

 This hollow was evi- 

 dently^ produced by wear 

 in grinding. The upper 

 stone, or pestle, as it 

 may be called, was about 

 eight inches in length, 

 three and a half inches 

 in width, and about two 

 inches in thickness. It 

 was conveys: on both sides, but more flattened on the 

 side which, was applied to the lower stone. Three entire 

 and several broken lower stones have been found on 

 the site of the mounds, and more than a dozen pestles. 

 Prof. J. E. Welin has kindly furnished the following 

 measurements of these stones. 



Fig. 22. Battered hand hammer made of flint. 

 Reduced to about four-fifths of the natural size. 



