...ughly masked by the tall marsh grass and the shadows of night, to the junction of that stream with Light-House inlet. The movement was unperceived by the Confederate sentinels, and the occupants of Morris Island were astounded when at dawn, the next morning, Vogdes's unsuspected batteries opened a tremendous cannonade, and Dahlgren's monitors, Weehawken, Catskill, Montauk, and Nahant, at the same time opene...