BULL. f^EOL. SOC. AM. 



vol . 18, 1906, PL. 26 



Figure 1. — Twin Pk.\k (Butte \t:.mher 12) pho.m the Ea.st 



Figure i'. — Cerrcj (.'(juminii (I'.utte \u.mi;er (i) .\.n;« I'rieia Mesa ero.m the North 

 TWIN PEAK, CERRO COCHINO AND PRIETA MESA 



