BUREAU OF AMERICAN ETHNOLOGY 



BULLETIN 52 PLATE 14 



PLANO-CONVEX KNIFE BLADES 



(5 actual size) 



From three widely separated groups: a. b, c, from tlie coast-pebble group; d, e,f, from the white 

 quartzite group; g, h, i, from southern Patagonia (Hatcher collection). (See fig. 31.) 



