On the coast of Loch Nell, or Ardmucknish Bay, is the vitrified fort of Beregonium, not to be confounded with Rerigonium (sometimes miscalled Berigonium) on Loch Ryan in Wigtownshire - a town of the Novantae Picts, identified with Innermessan.
Among the manufactures are zinc spelter-there are large smelters here-clay products (chiefly vitrified brick, sewer pipe and tile; the clay being obtained from a great underlying bed of shale), blasting powder, packinghouse products and planing-mill products.
But as the work proceeds the cloisons are hiddenunless their presence is necessary to give emphasis to the designand the final result is a picture in vitrified enamels.
The coral limestone of the atoll has a peculiar vitrified appearance and gives out a ringing sound when struck or simply walked on.
Among, the city's manufactures are refined oil, Portland cement, vitrified brick and tile, glass, asphalt, ice, cigars, drilling machinery, and flour.
The process was known at an early period, and was employed for the purpose of subsidiary decoration from the close of the 16th century, but not until the 19th century did Japanese experts begin to manufacture the objects known in Europe as enamels; that is to say, vases, plaques, censers, bowls, and so forth, having their surface covered with vitrified pastes applied either in the chain plev or the cloisonn style.
The chief varieties of this ware are vitrified china, belleek china, semi-porcelain, white granite and c. c. ware, vitrified porcelain for electrical supplies, porcelain bath tubs and tiles, and terra-cotta.
It is apparent that a vitrified enamel may be made to perform, in part at any rate, the function of a porcelain glaze.