Affairs in Mississippi.
Mobile, Feb. 15
--Meridian was evacuated yesterday.
All the Government property was saved.
Advices from Enterprise to-day state that the enemy have not appeared there.
Capt. Adair, of Forest's staff, has arrived here.
He left Forest at Oxford on the 9th, He was confronting a column of infantry, 6000 strong, from Memphis, via Hernando, and twelve regiments of cavalry via Colllersville.
Advices from Lee report that Sherman's forces, 35,000 strong, all armed, are marching in close order.
Lee's cavalry are harassing their flanks, picking up stragglers.
The prisoners state that they left the Big Black with twenty days cooked provisions.