BULL. GEOL. 



SOC. AM. 











VOL. 2 



3. 1908, PL. 6 



















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Figure 1. — kiiyolite-tuff, weatheked ixto Groups of Coxes 



Figure 2. — Single white Cone 20 Feet ix Height 



RHYOLITE-TUFF AND SINGLE CONE 



