U. S. GEOLOGICAL SURVEV. 
BULLETIN NO. 322 PL. IX 
A, It. MONOCLINE IN MONTEtlEY SHALE IN CASMALIA HILLS. 
About u miles northwest of Casmalia, looking northwest. Photograph by Ralph Arnold. 
C, D. GRACIOSA AND WESTERN UNION OIL COMPANIES' WELLS. 
South side of Santa Maria field; Mount Solom.on in distance. Photograph by Ralph Arnold. 
