64 Director's Ainuial Report. 



were only found in four instances, and one pair had deeper depres- 

 sions at one end which might have represented heels of boots. 

 In all but two instances noticed, the marks are hollows of such a 

 shape and size as a native might make by outlining his or her bare 

 foot (or sometimes sandal) on the sandstone and wearing down the 

 enclosed area by hammering the surface with a hard substance. 

 As one possible bit of evidence that the abrasion was done in the 

 manner described it might be mentioned that a flat oblong piece 



i'Hr. 43. Ol ll.UNKl) • I'lH) I I'K I _\ IS. 



of hard basalt (Fig. 46) was found on the trail among the "foot- 

 prints." It was 5 inches long, 3 inches wide and 1.5 riches^ 

 thick, with the ends worn and rounded as might well have been 

 done by repeated blows on the sandstone. It weighed 25 ounces 

 and rested comfortably in the hand as a striking implement. 

 The sandstone, while soft enough six inches below the surface to 

 be crumbled between the fingers, was yet too firm to be rubbed 

 away by the hand where exposed to the Vk^eather. The surface 

 was broken very readily, however, when pounded with a stone. 



The two exceptions noted above are feet merely outlined 

 (Fig. 43) and not intended to be hollowed. The complete out- 

 line in the illustration is 12 inches long. 



[288] 



