January 4th.—It is just as I feared. Gen. T. J. Jackson, supposing his project to be a profound secret, marched on the 1st instant from Winchester, intending to surprise a force of the enemy at Romney. But he had not proceeded half the distance before he found a printed account of his intended expedition in a Baltimore paper at an inn on the roadside. This was treason of the blackest dye, and will cost us a thousand men. The enemy, of course, escaped, and our poor soldiers, frost-bitten and famished, must painfully retrace all steps of this fruitless march.