New York, July 28.
correspondent of the Herald
says Mr. Secretary Welles
, of the Navy Department, has ordered a powerful naval force to guard the crossing of the Potomac
The story that Gen. Lee
intends to cross the Potomac South
of Harper's Ferry
, is improbable.
An entire change in the army organization is probable.
About midnight the pickets collided near the Chain Bridge
, of the party who went in search of Mr. Cameron
's body, has returned; his companions were held as prisoners, and he was sworn to silence.
correspondent of the New York Tribune
says that Col. Langler
had been authorized to summons and organize the men of the mountains and the plains, with whom he was very popular while opening the over land mail route.