FRIDAY, NOV. 3. At the head of the ravine, where our camping-trees wave, stands an amphitheatre reared by nature, and unrivalled in the grandeur of its proportions, and the stateliness and strength of its architecture. It unrolls its wild magnificence on the eye with a more majestic power than even Rome’s great wonder. From its ample arena, circling ranges of crags soar one over the other to the lofty sweep of the architrave, where sentinel-trees toss their branches against the sky. Had nature reared this theatre on the banks of the Tiber, the beauty and bravery of Rome would have flashed over the arena’s gladiatorial tumult. But it was here in California, where even the Roman eagle, in its earth-embracing circuit, flew not. A new deposit was discovered this morning near the falls of the Stanislaus, and in the crevices of the rocks over which the river pours its foaming sheet. An Irishman had gone there to bathe, and in throwing off his clothes, had dropped his jack-knife, which slipped into a crevice, where he first discovered the gold. He was soon tracked, and in less than an hour a storm of picks and crowbars were shivering the rocks. The accessible pockets were readily exhausted, but beyond these only the drill and blast of the practical miner can extend. And this is true of all the rock-gold in California; the present harvest glows near the surface; but there are under-crops, which the sunlight has never visited. Deep mining here, as elsewhere, will be attended with uncertain results; but a fount so capacious on its rim, must have its replenishing depths. The largest fish are taken with the longest line.