Tread surface and periphery of a footwear unit sole
FIG. 1 is a bottom plan view of a tread surface and periphery of a footwear unit sole showing my new design; 
     FIG. 2 is a left side elevational view; 
     FIG. 3 is a right side elevational view; 
     FIG. 4 is a front edge elevational view; 
     FIG. 5 is a rear edge elevational view; and, 
     FIG. 6 is an enlarged fragmentary cross-sectional view taken on line 6--6 of FIG. 1.