548 PR0GRi:8.S OK ANTHROPOLOGY IN 18flO. 



Striking wheu the edge iBsbarp; (3) iudirect percussion, practiced bj' 



Fig. 3. — Iiidiroct perc\issiou. 



tlie Wintuns and described by B. B. Redding; (4) indirect percussion, 



Fie;. 4. — Iiidirci't percussion. Two porson.s )'ii):a^e<l. 



two persons being concerned ; practiced by the Ai)ache8, according to 



