Aludel
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Aludels, in ancient chemistry, are subliming pots. The term refers to a range of earthen tubes, or pots without bottoms, fitted one over another, and diminishing as they advance towards the top. The lowest is adapted to a pot, placed in a furnace, wherein the matter to be sublimed is lodged. At the top is a head to retain the flowers, or condensation, which ascends.
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