...it. The rebels possess, however, a peculiar invention in the shape of an 'infernal' arrangement, worked by clock work, which is set off against a vessel at a distance of a mile. Fort Gaines, on Dauphin Island mounts twenty-two guns; Fort Morgan, on the main land, one hundred and twenty guns; Fort Grant, at Grant's Pass, on the northwest side of Dauphin Island, three guns; while at the mouth of Spanish riv...