96 



BUREAU OF AMERICAN ETHNOLOGY 



[Bull. 187 



Sfraighf Lines 



In place 



a. 



b. 

 A Eagle B 



Meet 





|.*.----♦♦---..*^ 



K-: ■-» *----^ 



c. 



d. 



B Strike-Stick A 





Cross 



- - -> 



0-- - 



o--- 



-H 



Figure 18. — Straight line. 



