Mortars found five feet under ground in the river bed, together with sand, mud, gravel, pebbles, and cement strata on the mountain side, testify to volcanic action.
From this mountain which formerly, in unknown ages emitted hot, sulphuric gases from its bosom, now runs a clear and limpid stream, a perpetual penance to nature for the havoc it once wrought.
When the Spaniards first visited the County, there were said to be thirty distinct tribes of Indians, each with its separate chief; while their language or dialect differed materially.
That they lived on mussels, sturgeon, and game from the marshes, is evidenced by the remains found in the huge shell mounds distributed throughout the County.
The Last of the Race.
What these mounds are and how they became so, is merely a matter of conjecture, although the scientists of the University of California and Stanford are revealing additional clues from time to time as new deposits are discovered.
