From Washington.
A policeman shot a soldier in Washington yesterday, whom he was trying to arrest.--The soldiers threatened to demolish the guard-house. An investigation was pending.
A member of the Seventh Regiment was accidentally shot there to-day.
The bridges on the Northern Central Railroad will be finished to-day.
The Court-House in Frederick, Md. was burned yesterday.
The 20th New York Regiment is at Annapolis. The 4th Pennsylvania Regiment, 800 strong, have arrived at Washington. Also, the 3d Battalion of Massachusetts volunteers.
The Maryland Legislature will probably adjourn on Friday to July 10.
The house next to Willard's Hotel was burned last night, with the stock of E. Owen &Son, military and naval tailors, with $15,000.
Maj. Anderson has been appointed to drill two regiments of Kentucky Volunteers for Lincoln's army, and has been made Colonel.
