in the English salt-works, a name given to certain leaden pans, which are usually made about a foot and half long, a foot broad, and three inches deep, and have a bow, or circular handle of iron, by which they may be drawn out with a hook, when the liquor in the pan is boiling.

The use of these pans is to receive a calcareous earth, of the nature of that which incrusts our tea kettles, which separates from the water in boiling; this substance they call scratch; and these pans, being placed at the corners of the salt-pan, where the heat is least violent, catch it as it subdues there.