On October 10, 1856, about four hundred people were camped in Tasajara Valley, California. It could not have been for the prospect, since a more barren, dreary, monotonous, and uninviting landscape never stretched before human eye; it could not have been for convenience or contiguity, as the nearest settlement was thirty miles away; it could not have been for health or salubrity, as the breath of the ague-haunted tules in the outlying Stockton marshes swept through the valle