From Washington
Washington, July 21
--Gen. Patterson's division is moving on Winchester slowly and cautiously, and is said to be under the command of Brig. Gen. Zeigle.
[This is doubtless all gammon, for it is strongly believed that Patterson's entire force was engaged in the Sunday battle near Manassas.]
The correspondent of the New York Post has telegraphed to his paper that Gen. Banks has superceded Gen. Patterson, and that Gen. Dix has succeeded Gen. Banks.
From Mr. Craig, who had just reached Washington, the correspondent learns that up to seven o'clock last evening at Bull's Run, and up to six o'clock this morning from Fairfax C. H., the fighting had not been renewed, except by the pickets, who are very close, as the armies are only about one mile from each other.
Gen. Tyler made a recognizance on yesterday, but discovered nothing worthy of note.
The largest house in Centreville had been burned down. 