Telegram From General Halleck To General G. C. Meade.

Washington, D. C., July 8, 1863.

MAJOR-GENERAL MEADE, Frederick, Md.:

There is reliable information that the enemy is crossing at Williamsport. The opportunity to attack his divided forces should not be lost. The President is urgent and anxious that your army should move against him by forced marches.

H. W. HALLECK, General-in-Chief