'Hurrah, it's leprosy!' How a conservator and a historian are decoding the grisly tales in Canterbury Cathedral's stained-glass windows
A detail from North III, one of seven surviving 12th- to 13th-century Miracle Windows in Canterbury Cathedral. The entire 6m-high window will soon go on display at the British Museum in London—having been reassembled correctly for the first time in centuries © The Chapter, Canterbury Cathedral The email message “It’s leprosy! Hurrah!” sent from Canterbury to Toronto last September was as joyous as it was brief. It solved a centuries-old puzzle and opened up a lost medieval world in glorious colour. The sender was Leonie Seliger, the glass conservator of Canterbury...