Meantime the first parallel encircling the outer line of the rebel defences was pushed forward, and the skirmishers were posted in rifle-pits so near that skirmishes were of constant occurrence at night. * * * * * The withdrawal of General Banks’s force from the west side of the Mississippi was followed by great activity on the part of the enemy, for the purpose of recovering the places held by small bodies of Federal troops, and to cause a diversion from Port Hudson. Opelousas was reoccupied by a considerable Confederate force; and the west bank of the Mississippi was lined with squads of the rebels, who fired on every boat which passed. On the 17th of June, an attack was made on the Federal pickets at La Fourche, which was repulsed. On the 23d, Brashear City was captured by a Confederate force under Generals Green and Morton. A camp of contrabands was attacked by the enemy, and large numbers killed. Immense quantities of ammunition, several pieces of artillery, three hundred thousand dollars’ worth of sutler’s goods, sugar, flour, pork, beef, and medical stores, of vast amount, were also captured. On the 28th, an attack was made on Donaldsonville, and the storming party succeeded in getting into the fort. But the gunboats opened a flanking fire above and below the fort, and drove back the supporting party, so that the enemy broke and fled. Of those who had entered the fort, one hundred and twenty were captured and nearly one hundred killed. Other movements on the part of the enemy were made at this time, which indicated great activity, and enabled them to destroy much Federal property. No embarrassment however was caused to the position of General Banks. The enemy, in short, recovered the La Fourche, Teche, Attakapas, and Opelousas country, and captured Brashear, with fifteen hundred prisoners, a large number of slaves, and nearly all the confiscated cotton. * * * * * After the two attempts to reduce Port Hudson by a land assault, on the 27th of May and the 14th of June, the purpose to make another was given up General Banks, until he had fully invested the place by a series of irresistible approaches. He was thus engaged in pushing forward his works when Vicksburg was surrendered. Information of this surrender was sent to General Banks, and it was the occasion for firing salutes and a general excitement in his camp, which attracted the attention of the enemy, to whom the surrender was communicated. General Gardner, upon receiving the information, sent by flag of truce, about midnight of the 7th, the following note to General Banks: “HEADQUARTERS, PORT HUDSON, LA., JULY 7th, 1863. “To Major-General BANKS, commanding United States forces near Port Hudson: