PORTRUSH.—The fishing-smack Foison, of Portrush, was dismasted in a heavy squall off Port Stewart Point, on the evening of the 2nd November. Two other smacks were in company with her, but were unable to render her any assistance, on account of the heavy sea, and they therefore made for Portrush and gave information of the casualty. The Lifeboat John Whitaker was promptly launched, and proceeded to the assistance of the smack, whose crew had cut away the rigging from the fallen mast and dropped their anchor. The five men were taken into the Life-boat and brought ashore, their vessel being towed by a steamtug into Portrush on the following day..