SINKERS. 



163 



Fig. 266. A smooth gnoissoid pebble, grooved and shaped at the shorter 

 sides by pecking. Thickness an inch and five-eighths. From Wickford, Wash- 

 ington County, Rhode Island. Clark collection. 



Fio. 260. (17840). Fio. 267. (17834). 



FIGS. 266 and 267. Stone sinkers. Rhode Island. 



Fig. 267. This sinker is derived from the same locality. It exhibits two 

 grooves crossing each other, and appears to have been shaped altogether by 

 artificial means. Thickness an inch and one-half. The material is a garnetiferous 

 mica-schist. Clark collection. 



Fio. 268. Rhode Island. (17S14). 



Fio. 269. Georgia. (10473). 



FIGS. 268 and 269. Stone sinkers. 



Fig. 268. A rather smooth pebble, syenitic in character, but containing very 

 little hornblende. Its form is that of a slightly flattened globe. The groove 

 shows traces of grinding. Found by Mr. Clark at Tiverton, Rhode Island. 



Fig. 269. A piece of compact potstone, worked into an approximately 

 globular form, and provided with a narrow, deep groove, produced by cutting. 



