BULL. GEOL. SOC. AM. 



VOL. 17 1905 PL 62 



Figure 1. — Limestone protruding through Tuff and situated in Front of a Boss of Basalt, Kupikipikto 



Figure 2.— Black Ash overlying weathered Tuff, Punchbowl Quarry 

 SECTIONS IN TUFF 



