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James Glaisher (April 7, 1809 - February 7,1903) was an English meteorologist, aeronaut and astronomer. In 1837 he became Superintendent of the Department of Meteorology and Magnetism at Royal Observatory, Greenwich. He is best remembered as a pioneering balloonist. Between 1862-66, usually with Henry Tracey Coxwell as his co-pilot, Glaisher made numerous ascents to measure the temperature and humidity of the atmosphere at its highest levels. His ascent on September 5, 1862 broke the world record for altitude, but he passed out around 8,800 meters before a reading could be taken. Photogravure after J. Mayall, undated.