From the West.
[special Dispatch to the Richmond Dispatch.]
Knoxville, April 26
--A prisoner who escaped from Lexington, Ky., says, that 10,000 Federals are concentrated at Lexington to make a descent on Cumberland Gap.
The Federals are fortifying Huntsville, Ala.
The cause of South is gaining daily in Kentucky, in consequence of the war tax and emancipation scheme.