From Washington.
Washington, June 17.
--Tuesday's Intelligencer says that no official instructions as to the fate of the Savannah's crew have been given, but the impression prevails that they will be hung.
The War Department has ordered the rebuilding of the Harper's Ferry bridge. Col. Stone occupies Leesburg.
At Fortress Monroe, Sawyer's American rifle cannon has been mounted at the RipRaps, which will reach Sewell's Point.
Gen. Scott boasts that the evacuation of Harper's Ferry was in perfect accordance with his plans, and that no Southern movements will in the slightest degree affect his programme.
The Government has information that the Southerners have a trap set for them fifteen miles from Alexandria, into which they expect to draw the Federalists.
Some scout reports that the Indians are lurking in the neighborhood of the alleged trap.
Point Lookout and Fortress Monroe are to be connected by a submarine telegraph.
A dozen rifle cannon have been sent to Alexandria.
Butler is threatening Great Bethel in force.
The troops at Fortress Monroe sleep on their arms. 