Show clams in solid sandstone one hundras feet down in the sandstone formation of the contra costa hills california an ancient bed of clams has baa been found the bed Is extensive the spot where the disco discovery v ery was made Is fully 1000 feet above the present level of the bay and about abou t five miles f from r om the bay shore the wo workmen akmen bored feet into the hillside before striking the bed A tramway cart had been almost filled with shells before the men noticed they were cutting out from solid sandstone clarn clams by the hundred |