C. Eczema and pellagra when marked by ill-nutrition, Barduzzi (L'lndependente, Nov. 5, '78), 188, Dec. '78.

D. Its chief value is as an external application. When applied in solid form to ulcers, it destroys flabby granulations and exerts a powerful exciting influence. Its solution acts more feebly and is sometimes employed as a dressing for indolent ulcers, 18, 43.

It unites with the albuminous substances on sores and forms an insoluble albuminate, which coats the surface and in an imperfect manner may take the place of the lost cuticle. Indolent forms of impetigo, after resisting the more usual applications, will sometimes yield to sulphate of copper, 5, 204.

Pernio, 210.