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Acetate – Artificial Diamond
Acetate
A salt formed by the union of acetic acid with a salifiable base; as, the acetate of copper, the acetate of silver, etc.
Air-pump
A pneumatic machine for exhausting air from a tight vessel, and thereby produce what is called a vacuum. See VACUUM.
Air-furnace
A furnace with a natural draft. See WIND-FURNACE.
Albata
An English name for German silver. See GERMAN SILVER.
Apothecaries' Weight
In this arrangement the pound contains 12 ounces; each ounce 8 drachms; each drachm 3 scruples, and each scruple 20 grains.
Apprenticeship
See TECHNICAL EDUCATION FOR THE MOULDER.
Aqua-regia
Royal-water, so called from its power to dissolve gold, the king of metals. Its scientific name is nitro-muriatic acid. See GOLD.
Arbor
See CORE-ARBOR.
Argentan
Imitation silver. See WHITE ARGENTAN.
Arm
A spindle attachment for carrying the sweep-board which forms a mould. See SPINDLE.
Arsenious Acid
White arsenic. See ARSENIC; WHITE ARSENIC.
Artificial Diamond
See DIAMOND.