Explanatory notes
… which, like bricks, are used in constructional or building work. It includes : (1) Roofing tiles (for roofs, … usually provided with nibs, holed for nailing, or may be moulded to interlock, and in this respect differ from the … flue-blocks, etc. (3) Architectural ornaments for use on buildings, walls, gates, etc. (e.g., cornices and friezes); …