Plate XIII 
n F PHIJD ' HOMME D..I' 
Ivory specimens illustrating the aichaic Boring Sea culture and its curvi- 
linear art, from Diomede islands. 
A. Harpoon head (Cat No. IX. F 6672), B. Implement of unknown 
use (Cat No. IX F. 6676). C. Harpoon foreshaft (Cat No. IX. F. 
f>670). 
