26 HAEHL AND ARNOLD — THE MIOCENE DIABASE. [Feb. 5, 



Fig. 6. Inclusion of sandstone in diabase dike seen in vertical cut beside the 

 Searsville-La Honda road three miles north of La Honda. Photograph by 

 Ralph Arnold. 



Fig. 7. View on the Page Mill road two hundred yards south of the summit, 

 looking northeast, showing shale layer slightly hardened at the contact with 

 the diabase dike. Photograph by Ralph Arnold. 



