PLATE XVII. 



Note. All figures in this plate are drain/ natural size. 



Fig. 1. Jasper pebble, one side clipped away. 



Fig. 2. Jasper pebble, one side clipped away. 



Fig. o. Shistose rock, burnt. 



Fig. 4. Clay slate. 



Fig. 5. Lava rock. 



Fig. G. Lava rock. 



Fig. 7. Talcose slate. 



Fig. 8. Lava rock. 



Fijj. 9. ' ? 



■8 



The first two implements are probably liammers, as the lower eiids are 

 fractured as if from use. Figs. 3 and 4 are rollers. Figs. 5, 6 and 

 8 are rude adzes. Fig. 7 represents a portion only of some imple- 

 ment. Fisr. 9 is a of a mortar. 



