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Figure 25  Cider jug, Halifax, West Yorkshire, England, late 1800s. Lead-glazed earthenware. H. approx. 14 1/4". (Courtesy, Shibden Hall and Folk Museum, Calderdale Metropolitan Borough Council—Museums and Arts, England.) Leaving the lower wall unglazed is said to have caused the cider to “roll,” accelerating fermentation; the hole beneath the neck held a loose stick that allowed gas to escape.