The telegram being thus despatched, Porter again turned his attention to the willows; and, a fortunate rise in the water having occurred, he was able to extricate his vessels and begin his retreat down the bayou. He was somewhat perplexed by the silence of the Confederates, from whom he had heard nothing since his mortars silenced their masked batteries. The conundrum was solved by the sound of wood-chopping in the forests ahead, and the discovery shortly after of two heavy logs lying athwart the bayou, and stopping the progress of the vessels. An hour's hard work with axe and saw removed this obstruction; and the tug, slipping through first, shot ahead to prevent any more tree-felling. The loud reports of her howitzer soon carried back to the fleet the news that she had come up with the enemy, and was disputing with them the right to the bayou. The difficulties of the retreat were no less great than those of the advance, with the intermittent attacks of the enemy added. The work of removing heavy, soggy logs, half submerged beneath the black waters of the bayou, clearing away standing trees, and breaking up and removing Red-river rafts, wearied the sailors, and left them little spirit to meet the enemy's attacks. The faint sounds of wood-chopping in the distance told too well of the additional impediments yet in store for the adventurous mariners. Scouts sent out reported that the enemy had impressed great gangs of negroes, and were forcing them to do the work of felling the trees that were to hem in Uncle Sam's gunboats, for the benefit of the C.S.A. But the plans of the Confederates to this end were easily defeated. Porter had not only many willing arms at his command, but the powerful aid of steam. When the gunboats came to a tree lying across the bayou, a landing party went ashore and fastened large pulleys to a tree on the bank. Then a rope was passed through the block; and one end having been made fast to the fallen tree, the other was taken aboard a gunboat. The word was then given, "Back the iron-clad hard;" and the fallen monarch of the forest was soon dragged across the bayou and out of the way So expert did the jackies become in this work, that they were soon able to clear away the trees faster than the enemy could fell them. The tug then went ahead, and for a time put an end to further tree-chopping, and captured several of the negro axemen.