...through the Yazoo pass, could not be procured; his previous orders to go to the assistance of Ross were therefore countermanded, Grant now intending to bring him to the lower end of the expedition. Quimby 's orders, however, were not yet revoked. Porter pushed along with his unwieldy iron-clads, through the labyrinth, his way obstructed now far more than in the earlier stages of the expedition. T...