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[ArndldJ Plate XXX. 



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Figure a. San Pedro. — South end of the lowest San Pedro terrace, looking northeast from Crawfish 

 George's toward Timm's Point, showing the contorted Miocene shales overlain by the thin horizontal upper 

 San Pedro (Pleistocene) layer. Photograph by R. Arnold. 



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Figure b. Port Harford. — Railroad cut at Fossil Point, looking south, showing Indian kitchen-midden 

 six feet thick and full of shells overlying the Pleistocene deposit of brecciated shale. 



Photograph by R. Arnold. 



