NO. 12 



SMITHSONIAN EXPLORATIONS, I917 



69 





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Fig. 71. — The remains of a grinding bin in a " prc-liawikuh " liuuse. 

 Photograph by E. F. Coffin. 



Fig. 72. — A curious structure at the l^ittom of the refuse, about 15 feet 

 deep. The box-Hke enclosure, which was once roofed, was probably used 

 for confining rattlesnakes. Photograph by E. F. Coffin. 



