LIGHT-House, a building erected upon a cape or promontory upon the sea-coast, or upon some rock in the sea, and having on its top in the night-time a light, such as to be seen at a great distance from the land. As the British light-house system is at present under the consideration of parliament, we feel that it would be premature and unsatisfactory to give any article under this head; and we are therefore under the necessity of referring to another, viz. that of SEA-LIGHTS, where the whole subject will be fully discussed.