ARROW STRAIGHTEXERS AXD SMOOTHERS. 



19: 



made of the same hard stone used for many of the pestles and mortars. 

 Two of these sinkers, collected on the island of San Miguel by Mr. Bowers, 

 are more or less cylindrical, and somewhat pointed at each end. The smallest 

 (P. M 13672) is represented of full size by Fig. 68. Both of the stones 

 were fastened to lines or nets by means of asphaltum. This asphaltum has 

 preserved a portion of the twine which was wound around each end of the 

 stone, and it is evident that in this way the string was held in place on the 

 sinker, which was thus easily attached to a line or net. The larger (P. M. 

 13673) of these two interesting specimens is about cS inches in length by 

 nearly 2 inches in its greatest diameter, and is somewhat flattened on one 

 side. A small stone of the same shape and material as the one represented 

 by Fig. 68 was probably used in the same way as a sinker, but there are 

 now no signs of asphaltum on its ends. This little sinker (P. M. 13295) is 

 only 2^ inches in length by f of an inch in diameter at its centre, from 

 which it tapers toward each end. It was obtained from the island of Santa 

 Catalina by Mr. Schumacher. From the same island Mr. Schumacher also 

 collected a small plummet-shaped stone (P. M. 13274), 2J inches long by 

 1 inch in thickness, which differs from the last in being pointed at one end 

 only, and this pointed portion is very smooth, while the rest of the stone is 

 rough and with an irregular surface. — F. W. P.] 



Figs. 69 and 70 represent a top and side view of an interesting form 



Fig. 69. 



• Arrow-straightener." 



of implement which is supposed to have been used in straightening arrow- 

 shafts, by Mr. Schumacher, who collected the specimen (S. I. 18341) fig- 



