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On July 23, 1924, the editor of Scientific American, O.D. Munn, and six members of a scientific investigative committee gathered in a small room on the fourth floor of 10 Lime Street, Boston. It was hot and uncomfortable, after all, the city was experiencing a heat wave. But if there was any unease among the committee members, it was not because of the weather but rather the reason for their meeting. The scientists had come together to witness the skills of a 36-year-old flapper called Mina Crandon who had divided public opinion for some time. Crandon, known as “Margery” to her supporters, or …

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