Washington, August 12.
— The World's special says there is reason to believe a battle has been fought near Winchester, between Sheridan's force and the main body of the rebels, under Early. Very heavy cannonading was heard in that direction at Harper's Ferry yesterday afternoon, and it was known our forces were close upon the rebels.
The World's special in from Petersburg, July 10th, says: From the fronts I have to record great fire near the right of the enemy's lines thought to have been a number of houses, called Head Works, and now occupied as a depot for commissary stores for a portion of the rebel army. A brigade of their troops were seen to rush hastily in that direction. Whether they succeeded in extinguishing the flames in time to save the property from destruction, is not known.