Colonel Lyons.
Stevenson, Ala., Tues., Sept. 29th, 1863.—The first reinforcements for Gen. Rosecrans, a detachment of the 15th Regulars, went through here last night. They are from Memphis. It is understood that large numbers of troops are pouring into Nashville and will begin to reach here tomorrow. We all feel better. We do not expect any attack here.
