EXPLANATION OF PLATE 15. 



1 o 4 



Fig. 1. Dkcorated Knifk Haxdlk. 



(Cat. No. 45488, U.S. N.M. St. Miibaels. Collected by E. AT. ISTelsoii.) 



Fig. 2. Kmfr with Irox Blade. 



(Cat. No. 48.530. Kotzebue Sonud. Collected by E. W. Nelson.) 



Fig. 3. I5()NE Knife. 



( Cat. No. ;!3U2ti. U. S. N. M. Norton Sound. Collected by E. W. Nel.son. ) 



Fig. 4. Ivory Knife. 



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



