Black is common and japanning is often assumed to be synonymous with black japanning. Painting featured on the "Japanning" works of industrial Britain. By the 1880s, the japanning and tin-plate industries were in decline. They developed businesses in baking, japanning and tin-plate working, canals and gas manufacture. Thus japanning and "japanned" are terms describing the process and its products. If the japanning is intact, a magnet can be used to identify iron. In the 18th century, japanning gained a large popular following. The art of japanning developed in seventeenth-century Britain, France, Italy, and the Low Countries. In 1826 Mogridge's Japanning business collapsed, and he took to writing full-time for a living. Japanning is most often a heavy black "lacquer", almost like enamel paint. Japanning is a type of finish that originated as a European imitation of Asian lacquerwork.