EXPLANATION OF PLATE 15. 



3 4 



Fig. 1. DECORATED KNIFE HANDLE. 



(Cat. No. 45488, U . S. N. M. St. Michaels. Collected by E. W. Nelson.) 



Fig. 2. KNIFE WITH IRON BLADE. 



(Cat. No. 48536. Kotzebue Sound. Collected by E. W. Nelson.) 



Fig. 3. BONE KNIFE. 



( Cat. No. 33026, IT. S. N. M. Norton Sound. Collected by E. W. Nelson. ) 



Fig. 4. IVORY KNIFE. 



(Cat. No. 36576, U. S. N. M. Cbalitmut. Collected by E. W. Nelson.) 



