Lewis, J. Sydney · London, T.W. Laurie ltd.; Philadelphia, Lippincott · leaf 82
. The bowlwas almost invariably waisted, that is, its sideswere bent inwards. The foot was folded andthere was a characteristic lessening in thediameter of the stem as it neared the bottom,which the puller of toffee will readilyunderstand. Air-twisted Stems. — The air-twist probablybegan with a… … Eighteenth-Century Glass drawn out, the bubble elongated into a tube,and when the stem was twisted, the tubeacquired a spiral shape. Now as the tubewas filled with air, which had a different re-fractive capacity to the glass which surroundedit, the effect of the light falling upon itwas to produce…
Glassware
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