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Quantitative record of respiration during periodic breathing during the 1911 Anglo-American Expedition to Pikes Peak

Subject: Yandell Henderson (1873-1944), Professor of Physiology at Yale University Medical School. August 13, 1911. Inspiration is indicated by upward deflections. (Source: Douglas CG, Haldane JS, Henderson Y, Schneider EC. Physiological observations made on Pike's Peak, Colorado, with special reference to adaptation to low barometric pressures. Philosophical Transactions of the Royal Society, Series A 1913;203:185-318.)

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