...ock at night all the officers at Point Lookout, except Major Hanvey, who was too sick to be removed, were put on board the boat Johnson, and at 1 o'clock in the morning were carried to the mail boat James T. Brady , bound for Washington city, and sailed up the Potomac. The wind blew fearfully cold, and as we were compelled to sleep on deck and in the gangway, our suffering was severe indeed. Fortunately I ...