68 



STONE ART. 



(ETH. ANN. 13 



F. Grooved on both faces and one side, with both sides flat. There 

 is only one of this form in the collection ; it is of argillite, from Keokuk, 

 Iowa. 



O. Grooved on faces only, with both sides flat (figure 38, of granite, 

 from Keokuk, Iowa). There are from the same place one of porphyry, 

 one of argillite, and three of sienite. This and the preceding form 

 seem peculiar to that locality. 



There are a few exceptional forms which are not placed with those 

 just given, since they may have some features common to all except 



Fig. 36. 



-Grooved ax, showing flattened 

 curved back. 



Fig. 37 Grooved ax, showing 



flattened straight back. 



the Keokuk type, while in other respects they differ from all. Among 

 them are some entire-grooved or grooved only on the two sides and one 

 face; the general outline may correspond with some of the regular 

 forms, but one face is curved from poll to edge, while the other is 

 straight or nearly so (figure 39, of granite, from Wilkes county. North 

 Carohna). This specimen has a depression, as if worn by the end of a 

 handle, on the straight face at the lower edge of the groove. 



None of this form are long enough for hoes, and although they may 

 have been used for axes and hatchets their shape seems to indicate 

 use as adzes. Besides the one figured there are two from Savannah, 

 Georgia ; three from eastern Tennessee, one with a slight groove and 

 very deep side notclies; and three from western North Carolina, two of 

 them entire-grooved with groove projections. 



