EXPLANATION OF PLATK XXXVII. 

 TiiK Making and Mounting of an Arrow point. 



Fig. 1. Kiiockiun' off cliips from a core of obsidian by uieaus of the stoue hammer 

 aiid pitchiuji: tool of antler; one person operatiuj;-. 



Fig. 2. Knocking off cliips from a core of obsidian by means of the stone hammer 

 and pitchinji' tool of antler; two persons operating. 



Fig. 3. Pressing off Hakes from a blade of siliceons stone by means of the bone flaker, 

 the operator holding the blade against the ball of the thnmb and ]iress- 

 ing from him. * 



Fi<;. 4. Pressing off flakes from a blade of siliceous stone by means of a bone flaker, 

 the operator bedding the blade on the palm of the hand and pressing 

 downward. Freiiuently the hand is gloved or a bit of rawliide is flrst laid 

 upon the palm. 



Fig. 5. Pressing oft" flakes iVom a bit of siliceous stone by means of the btmc flaker, 

 the operator holding the block upon a bit of wood with his left hand and 

 pressing downward with the right. This is a very eft'ectual mode of work- 

 ing. 



Fk;. G. Fastening the arrowhead upon the shaft by means of a filament of moist 

 siuew. The shaft is held firmly under the left arm for a bearing, held 

 and revolved by the left hand, and the moist filament of siuew is held. 

 tight and guided bv the right hand. 



