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An old lady in a pharmacy misunderstanding the use of a thermometer: she thinks the ambient temperature will adjust to match a setting on the thermometer, rather than vice versa. Wood engraving after C. Keene, 1887.

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An old lady in a pharmacy misunderstanding the use of a thermometer: she thinks the ambient temperature will adjust to match a setting on the thermometer, rather than vice versa. Wood engraving after C. Keene, 1887.