BULL. GEOL. SOC. AM. 



VOL. 17, 1905, PL. 53 



Figure 1. — Contact of Dwyka Tillite, left Foreground, against a glaciated Surface 



of Barberton Slates 



Figure 2. — A glaciated Surface of Barberton Slates overlaid by D\v\ka Tillite 

 DWYKA TILLITE AND GLACIATED BARBERTON SLATES 



