...General Beauregard of the battle of Manassas, and am unable to refer to his introductory statement to which you call my attention. I cannot therefore say how far it agrees with the communication of Mr. Chesnut . I recollect, however, that at the interview at which I was present Mr. Chesnut urged, on the part of General Beauregard, the importance of reinforcing the army of the Potomac to enable it to oppos...