McClellan and Scott.
--A correspondent of the New York Tribune states, circumstantially, that McClellan's reason for not reporting his plans, &c., to Scott was, that he had discovered that Scott's office was not a safe place to report to; that he had found out that Scott's son-in-law, Col. Henry L. Scott, had exposed them to the Confederates; that the latter, on being summoned to the White House, confessed it, and, instead of being punished, was placed on the retired list, with the pay and emoluments of Colonel of cavalry, and immediately went to Europe, where he is doing all he son for secession. All this the correspondent says, is the reason why Gen. Scott will not publish anything.