Telegram To General Marcy.

Washington, May 29, 1862. 10 A.M.

GENERAL R. B. MARCY, McClellan's Headquarters:

Yours just received. I think it cannot be certainly known whether the force which fought General Porter is the same which recently confronted McDowell. Another item of evidence bearing on it is that General Branch commanded against Porter, while it was General Anderson who was in front of McDowell. He and McDowell were in correspondence about prisoners.

A. LINCOLN.