186 BUREAU OF AMERICAN ETHNOLOGY [bull. 60 



implements. It is true that they did much excavating' in tlie cave at a distance 

 of a mile or more from its moutli, and that they carried the flint to the outside 

 to work it up. But the quarrying was exactly similar to that carried on on 

 the outside; that is, they dug in the clay for nodules, which they tested by 

 striking ott flakes, rejecting such as did not suit their purposes. The angular 

 fragments that have been mistaken for the debris of the Indian work are 

 pieces that have been released from the ceiling of the cave by the weathering 

 of the limestone, and are not at all suited for manufacture. The stratum from 

 which they come is about 3 inches thick, and the fracture of the stone being 

 at right angles to the line of stratification, produces prisms of a uniform length 

 equal to the thickness of the layer, and varying from the size of a lead pencil 

 to pieces 4 or 5 inches square.^ 



1 Fowke, Material for Alx)riginal Stone Implements, p. 332. 



