From Mississippi — the enemy advancing in force — sharp fighting.
Mobile, Feb. 5.
--A special to the Evening News, dated Clinton, 4th, says: Sherman's two corps, under McPherson and Hurlburt, are advancing.
Gen. Jackson has fought them all day. They made but two miles to-day, and will encamp to-night six or eight miles below Clinton.
Persons report the advancing column to be 30,000 strong.
Gen. Ross whipped their cavalry on the Yazoo yesterday in a hand to hand fight with pistols.
[Second Dispatch.]
Mobile, Feb. 5.
--A special to the Register and Advertiser, from Jackson, dated yesterday, says: The enemy commenced crossing the Big Black yesterday.
They threw over six regiments of infantry, two of cavalry, and two batteries at the railroad bridge.--They attempted to cross at Messenger's, but failed, and are now attempting to cross at Birdsong's. The city is full of rumors, and some excitement prevails, but the people are generally confident. 
