From Tennessee.
Atlanta, July 3.
--It is reported that Rosecrans is felling back, and that Bragg is reoccupying Tullahoma with heavy force.
There has been no raid on the railroad in East Tennessee.
[Second Dispatch]
Atlanta. July 4
--It is considered certain that Morgan has played havoc with Rosecrans's rear.
An important movement is taking place in Gen. Bragg's army, but it is not prudent to mention particulars.
[Third Dispatch]
Atlanta, July 4
--Braggle headquarters are at Bridgeport.
The Tennessee river will be the future line of defence.
It is supposed that Huntsville and the Memphis and Charleston Railroad will be abandoned.