Whitening. In coinage, the operation of giving brightness to pieces of silver, by heating them on a peel, and afterwards boiling them successively in two pans of copper, with aqua fortis, common salt, and tartar of Montpelier; then draining off the water in a sieve; sand and fresh water are then thrown over them, and when dry, they are rubbed with a towel.

Whitening. In coinage, the operation of giving brightness to pieces of silver, by heating them ona peel, and afterwards boiling them successively in two pans of copper, with aqua fortis, common salt, and tartar of Montpelier; then draining off the water in a sieve; sand and fresh water are then thrown over them, and when dry, they are rubbed with a towel. The covering of iron plates with a thin coat of tin is also called blanching. Blanch-fern, or blank farm, in ancient law, a white farm, was one, where the rent was paid in silver, not in cattle. Blanch-holding, in law, a tenure by which the tenant is bound to pay only an elusory yearly duty to his superior, as an acknowledgment to his right.