Alexander Kellas
heart attack
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Alexander Kellas
Alexander Mitchell Kellas (21 June 1868 - 5 June 1921) was a Scottish chemist, explorer, and mountaineer known for his studies of high-altitude physiology. He was born in Aberdeen, Scotland. Himalayan Club Vice President Meher Mehta characterized Kellas' papers A Consideration of the Possibility of Ascending the Loftier Himalaya and A Consideration of the Possibility of Ascending Mt Everest as "key catalysts in driving scientific thinking into climbing big peaks. His studies included the physiology of acclimatization in relationship to important variables like altitude, barometric pressures, alveolar PO2, arterial oxygen saturation, maximum oxygen consumption, and ascent rates at different altitudes. He had concluded that Mt Everest could be ascended by men of extreme physical and mental constitution without supplementary oxygen if the physical difficulties of the mountain were not too great." In 1978, Kellas' suggestion was verified by Reinhold Messner and Peter Habeler when they made the first ascent of Mount Everest without supplemental oxygen. However, Kellas was also one of the earliest scientists to suggest use of supplemental oxygen on high mountains such as Mount Everest; the first ascent of Everest and most subsequent ascents (as well as some ascents of lower peaks) have done so. A distant relative (Simon Kellas) is now employed by The Physiological Society (UK). Kellas was also a noted mountaineer in his own right. He had made at least ten first ascents of peaks over 6,100 m (20,000 ft) including Pauhunri, 7,128 m (23,386 ft), in Sikkim, which was the highest peak climbed up to that point, although this was only discovered 80 years later. He reached the summit on 14 June 1911, and this world summit record was only broken in September 1928 with the ascent of Lenin Peak. Kellas died of a heart attack in 1921 near the village of Kampa Dzong, Tibet, on his way from Sikkim to the first expedition to Everest. He had had only a brief rest of 9 days after an arduous expedition to Kabru and was only a day's hike away from seeing Mount Everest for the first time.