SINKERS. 



163 



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

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

 ington County, Rhode Ishmd. CLark collection. 



Fig. 26(!. (17846). Fio. 267. (17S34). 



Figs. 266 and 267.— Stone sinkers. Rhode Island. 



Fig. 267. — This siidver 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. 



Fig. 268.— Rhode Island. (17314). 



Fio. 2C9.— 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 comjiact potstone, worked into an approximately 

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



