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Updated: May 16, 2025
After this cools, the tube through which the gas enters may be heated at the proper point and bent at right angles to form the finished apparatus as shown in d. The ends of the small tube are cut off square and fire-polished.
A little farther on, a workman, loading his pontil, by repeated dippings, with a large quantity of glass, dropped the lump into an open basin hollowed in the surface of one of the iron tables. It was here suffered to cool for some moments, and then, by means of a pontil tipped with molten glass, carried away to be fire-polished.
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