White, Alum. Syn. Baumé’s white. Take of powdered Roman alum, 2 lbs.; honey, 1 lb.; mix, dry, powder, calcine in a shallow dish to whiteness, cool, wash, and dry. A beautiful and permanent white, both in oil and water.
White, Derbyshire. From cawk or heavy spar, by grinding and elutriation.
White, Flake. The finer kinds of white lead are so called.
White, Min′eral. Precipitated carbonate of lead.
White, Newcastle. White lead made with molasses vinegar.
White, Nottingham. White lead made with alegar. Permanent white is now commonly sold for it.
White, Pearl. Syn. Fard’s Spanish white. Trisnitrate of bismuth.
White, Per′manent. Artificial sulphate of baryta, prepared by precipitating chloride of barium with dilute sulphuric acid, or a solution of glauber salts. A good fast white, unchanged by sulphurous fumes. Used to mark jars and bottles for containing acids or alkalies, as it is affected by very few substances; also to adulterate white lead.
White, Spanish. Syn. Blanc d’Espagne, Blanc de Troyes, Fr. The softest and purest white chalk, elutriated, made into balls, and well dried. Used as a cheap white paint.
WHITE SWEL′LING. Syn. Hydrarthrus, L. A variety of indolent, malignant, scrofulous tumours, attacking the knee, ankle, wrist, and elbow, especially the first.