AERY, or AIRY, among sportsmen. See AIRY.
ÆS, properly signifies copper, or money coined of that metal. See COPPER.
ÆS Flavum, yellow copper, among the Romans, an appellation given to the coarser kinds of brass.
ÆS Caldarium, a term used by the German mineralists, for a substance which sometimes occurs to those who work upon cobalt, and is used for the making the fine blue colour called suvalt.
ÆS Ustum, a chemical preparation, made of thin leaves of copper, sulphur, and nitre, placed stratum super stratum in a crucible, and set in a charcoal fire, till all the sulphur is consumed; after which, the copper is taken out of the crucible, and reduced to powder. Some quench the leaves of copper in vinegar, and repeat the calcination.—Its principal use is in colouring glass, to which it gives a beautiful tincture. The surgeons use it as a detergent, and some have given it internally; but it is certainly a very dangerous medicine, and should be avoided.