"So much the better," said the undaunted admiral. "All I want is an engine, guns, and a hull to float them. As to boats, they are very much in the way."
A short time only was spent in consultation, and then Sherman with his forces left the bayou and plunged into the interior, first warning Porter that he would have a hard time getting any farther, even if the enemy did not come down and surround him. But Porter was not the man to abandon the advance, so long as there was water enough to float his gunboats. Besides, he had gained some ideas regarding navigation in the forests, that enabled him to move his fleet forward with more celerity than at first. When a tree blocked the course of the iron-clads, they no longer stopped to clear it away by work with the axes; but, clapping on all steam, the powerful rams dashed at the woody obstruction, and with repeated blows soon knocked it out of the way.
Soon after leaving Sherman, Porter saw that the difficulties he had thus far met and conquered were as nothing to those which he had yet to encounter. The comparatively broad stream up which he had been steaming came to an end, and his further progress must be through Cypress Bayou, a canal just forty-six feet wide..[??-second period a smudge?] The broadest gunboat was forty-two feet wide, and to enter that narrow stream made retreat out of the question: there could be no turning round to fly. The levees rose on either side of the narrow canal high above the decks of the iron-clads, so that the cannon could not be sufficiently elevated to do effective work in case of an attack. But there were nine feet of water in the great ditch; and that was enough for Porter, who pressed boldly on.
The country into which the combined military and naval expedition was advancing was in truth the granary of Vicksburg. On all other sides of the beleaguered city, the Federal lines were drawn so closely that the wagons laden with farm produce could not hope to pass. But here, back of the city, and far from the camps of Grant's legions, the work of raising produce for the gallant people of Vicksburg was prosecuted with the most untiring vigor. The sight, then, of the advancing gunboats aroused the greatest consternation. From the deck of his vessel Porter could see the people striving to save their property from the advancing enemy. Great droves of cattle were being driven away far into the interior; negroes were skurrying in all directions, driving poultry and pigs to the safe concealment of the forest; wagons groaning under the weight of farm and garden produce could be seen disappearing in the distance. What the inhabitants could not save they destroyed, in order that it might not profit the invaders. A short distance from the mouth of the bayou "were six thousand bales of cotton piled up on opposite sides of the stream, ready to be taken aboard a steamer when the war should end. As the gunboats advanced slowly, making little headway against the two-knot current of the bayou, Porter saw two men, carrying lighted pine-knots, dash up to the cotton, and begin to set it afire. The admiral looked on in disgust. "'What fools these mortals be!'" said he to an officer standing at his side; "but I suppose those men have a right to burn their own cotton, especially as we have no way of preventing them."
"I can send a howitzer shell at them, sir," said the officer, "and drive them away."
But to this Porter demurred, saying that he had no desire to kill the men, and that they might do as they liked with their own. Accordingly the officers quietly watched the vandals, until, after twenty minutes' work, the cotton was blazing, and a dense mass of smoke cut off all vision ahead, and rose high in the air. Then Porter began to suspect that he had made a mistake. The difficulties of navigation in the bayou were great enough, without having smoke and fire added to them. Yet to wait for the cotton to burn up might cause a serious delay. On the high bank of the bayou stood a negro begging the sailors to take him aboard.
"Hallo, there, Sambo!" sung out Porter, "how long will it take this cotton to burn up?"
"Two day, massa," responded the contraband; "p'raps tree."
That ended the debate. "Ring the bell to go ahead fast," said the admiral to the pilot; and away went the flotilla at full speed, plunging into the smoke and fire. It was a hot experience for the sailors. The heavy iron-clads made but slow progress, and were scorched and blistered with the heat. The ports were all shut down, and the crews called to fire-quarters, buckets in hand. To remain on deck, was impossible. Porter and his captain made the trial, but had hardly entered the smoke when the scorching heat drove both into the shelter of an iron-covered deck-house. The pilot standing at the wheel seized a flag, and, wrapping it about his face and body, was able to stay at his post. As the flames grew hotter, the sailors below opened the main hatch, and, thrusting up a hose, deluged the deck with floods of water. So, without a man in sight, the huge iron ship moved along between the walls of flame. Suddenly came an enormous crash. The gunboat shivered, and for a moment stood still; then, gathering headway, moved on again, though with much ominous grating beneath her keel. Soon after she passed out of the smoke and heat, and all hands rushed on deck for a whiff of the fresh, cool air. Their first thought was of the cause of the collision; and, looking eagerly astern, they saw a heavy bridge, about fifty feet of which had been demolished by the tremendous power of the ram. This gave Porter a hint as to the force he had at his command; and thereafter bridges were rammed as a matter of course whenever they impeded the progress of the iron-clads. The astonishment of the people along the shore may well be imagined.
The great and formidable obstacles that stood in the path of the squadron were, as a rule, overcome by the exertion of the great powers of the steam-driven, iron-plated vessels; but at last there came a check, that, though it seemed at first insignificant, terminated the sylvan manœuvres of the iron-clad navy. After running the gantlet of the burning cotton, butting down trees, and smashing through bridges, the column entered a stretch of smooth water that seemed to promise fair and unobstructed sailing. But toward the end of this expanse of water a kind of green scum was evident, extending right across the bayou, from bank to bank. Porter's keen eye caught sight of this; and, turning to one of the negroes who had taken refuge on the gunboat, he asked what it was. "It's nuffin' but willows, sah," he replied. "When de water's out of de bayou, den we cuts de willows to make baskets with. You kin go troo dat like a eel."