Plate taken from the 'Illustrated London News'. This trick was performed by Mr Sands, the owner of the Hippodrome in New York. He used sandals attached by springs to platter-like soles, 0.3 metres in diameter to cros the platform from which he was suspended. Atmospheric presure of 101,325 pascals attached the air-walker to the platform laid acros the roof of the theatre, but this would have made it imposible for Sands to walk, unles, as the ILN suggested, he had used a hidden valve.
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