180 PREHISTORIC FISHING. 



originals, moreover, were both found near the Yellowstone Lake, in the Yellow- 

 stone Park, Wyoming, and sent to the National Museum by Mr. P. W. Norris. 

 "Fig. 322. A grooved sinker, made of a syenite pebble of somewhat com- 

 pressed shape. The pecked groove seems to be its only artificial modification. 



FIGS. 322 and 323. Stone sinkers. Wyoming. 



Fig. 323. This very fine and carefully polished sinker consists of whitish 

 quartz, variegated with black spots. The hole is regularly drilled 'from both 

 sides. 



On a preceding page allusion was made to sinkers of native copper. As 

 this metal would have furnished an excellent material for sinkers, the small 

 number of copper articles of this kind hitherto discovered must excite some 

 surprise. Indeed, I know only of two specimens, representations and descrip- 

 tions of which are here given. 



Fig. 324. A sinker of beaten native copper, approximately round in the 

 cross-section, and provided with a groove for the attachment of the line. The 

 object is not quite regularly shaped, and shows several cracks, into one of which, 

 at the lower end, a thin piece of beaten native silver is inserted. The original 

 was found, in June, 1819, with a number of other relics, in a mound at Marietta, 



