Latest from the North.
proclamation from Lincoln Liberating slaves — Gen Bragg advancing upon Louisville — the surrender of that city Demanded — heavy Federal loss at Shepherdstown, &c.Petersburg, Sept. 26.--Northern dates to the 23d inst have been received. Lincoln has issued a proclamation declaring the slaves of rebel masters free from and after the first of January next. The excitement at Louisville is tremendous. A dispatch from Jeffersonville, dated 22d, says that the rebel Generals, Bragg and Smith, have divided their forces — Smith is to hold Buell, who is marching for Louisville, in check, while Bragg advances on the city. Bragg has summoned Nelson, in command of the army for the defence of Louisville, to surrender. Nelson refused, and has ordered all the women and children to leave the city at one hour's notice. Thousands of citizens are crossing the river into Indiana Bragg is some distance from the city, but advancing rapidly. The Herald acknowledges a heavy loss near Shepherdstown on Saturday. It says the rebels were dressed as Union soldiers, and displayed a flag of truce to induce the Federal to cross the river. Sumner's corps d'arme alone lost 5,203 at Sharpsburg in killed, wounded, and missing. A correspondent from the battle field on the 22d, says the Federal were still bringing in the dead at the rate of one thousand per day, and expected to get through on that day. General Hooker was shot through the foot by a rifle ball, and will not be able for duty for a long time. General Crawford's wound is more serious than expected. Lt. Col. Dwight, of the 2d Massachusetts, was killed. Col. Hinks, of the 19th Massachusetts, badly wounded. General Richardson wounded in shoulder — will die. General Dana was wounded badly in knee. In the 38th Massachusetts, Col. Wild lost an arm at the shoulder joint; Lt. Colonel, Adjutant, and eight captains wounded. The correspondent of the Times says the slaughter was awful, particularly among the officers. In New York, on the 22d, Exchange was firm at 129 ¼ Gold 117 ¼ Cotton 54
