an old name for a whitish substance which is thrown up from the metal, as it is called, of which glas is made; and, swimming on its surface, is skimmed off.

Sandiver is also plentifully ejected from volcanoes; some is of a fine white, and others tinged bluish or yellowish.

Sandiver is said to be detergent, and good for foulnesses of the skin. It is also used by gilders of iron.