Smithsonian Report, 1957. — Stewart 



Plate 5 



Upper: View of inside of skull XII-B-1555 from Boundary Bay, British Columbia-Wash- 

 ington, showing broken edge of circular opening. Middle: Photomicrograph of portion 

 of edge of same opening. Note that there is smoothing but not obliteration of the inner 

 bone structure. Lower: Photomicrograph of portion of outer surface around edge of 

 opening. Note cut marks. (Photograph courtesy of National Museum ol Canada.) 



