Recruiting in California.
--A correspondent writing from San Francisco, September 7, says that it would be difficult to raise seven thousand men in California for the war. The population is too sparse for the draft, and engaged, for the most part, in lucrative employment. He adds: "Most all the reports concerning Secession sympathizers here, are either very much exaggerated or entirely unfounded. In a few places, it is true, flags have been exhibited and indiscreet speeches made; but the number who would wantonly take up arms against the Government does not exceed six thousand out of a voting population of one hundred and twenty-five thousand; and the six thousand madman, or even five times that number, would be quickly annihilated. So the people at the other side of the mountains may rest satisfied that California is loyal to the core."