Plate I.— Imlpements of the Chase, Natives of Northwestern Alaska. 



1. Holder for throwing spears, one-third size. 



2. Snow speclacleB, natural size. 



3. Section of 2 through A B. 



4. Spear-head of ivory for deer, natural size. 



5. Arrow-head of ivory pronged for birds, natural size. 

 C. Spear-head of chipped flint, natural size. 



7. Arrow-head of chipped flint. 



8. Blunt arrow-head of ivory or bone for birds, natuiral size. 



9. Spear-head of polished jade; very rare. 



10. Seal .spear with detachable ivory head, one-sixth size. 



11. Bird spear with prongs of ivory, one-sixth size. 



90 



