Exercise at high altitudes 



271 



low altitudes will become inappreciable. Not so at high altitudes, 

 however. This was most strikingly shown on our ascent from Col 



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BARCROFT 



Mesectic 



Meioneotic 



CARLINGFORD 

 IOOO' in 45 mins 



BARCROFT 



Mesectic 



Meioneotic 



COL D'OLEN 



lOOO 7 in 4 5 mins 



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FIG. 130. Showing the changes in the dissociation curve which result from a 

 climb of 1000 feet near the sea-level and in the high Alps. 



d'Olen to the Margherita hut. It is an ascent from an altitude of 

 10,000 to one of 15,000 feet. For the ascent we took about eight 



