PALM AND SOLE STUDIES. 



159 



that there was a second loop proximal to the other, or that the 

 two were separated by a triradius; in Fig. 17, closely similar to 

 16, a tread-area print would show simply an uninteresting sole, 



FIG. 14. FIG. 15. 



FIG. 14. Print of right foot of Coll. No. 202, showing extensive hypothenar 

 loop, not shown by an ordinary tread area print. 



FIG. 15. Print of right foot of Coll. No. 609, showing hypothenar loop, practic- 

 ally identical with that of Fig. 13, but so placed that it appears in a tread area print. 



devoid of all special features, and would fail to show either 

 hypothenar loop or the triradius between them. 



Thus far, in the history of the investigation of human soles, 

 there have been on record but three cases in which the general 

 surface of the sole, proximal to the ball of the foot, shows a 



