Contribution to tlie Physiology of Respiration under the Arctic Climate. IQÇ^ 



Tilis probably holds good for short periods under quiet con- 

 ditions; but the alveolar carbonic acid tension varies very consider- 

 ably under the influence of climatic factors: light, air-pressure and 

 temperature. 



Much indicates, however, that these changes may be due to 

 changes in the excitability of the respiratory centre. 



9-4—1910. 



