Contribution to the Physiology of Respiration under the Arctic Climate. 125 



All three experiments have proceeded normally. The pulse 

 and temperature were taken in a recumbent position before dres- 

 sing. The bodily weight was determined as 68 kilos on 25/V. 



Analysis of the inspired air was also made on the 25,'V and 

 27 /V as well as the 21 /V, both times with the same result as above 

 given. 



The respiration-frequency is influenced by the low tem- 

 perature and approximates to the values for June. The average is 

 7-39. The frequency in the single experiments is regular; an after- 

 noon experiment on the 26/ V gave the following values: 



10 min. 20 min. 30 min. 

 85 169 254 



The total volume respired is comparatively low, the average 

 is 414, which again is in connection with the high alveolar car- 

 bonic acid tension. We also see again the effect of the low 

 outer temperature as in the April series; only it is even more 

 strongly marked at this more advanced time of year. The percen- 

 tage of carbonic acid in the alveolar air is 461, the tension in mm. 

 of mercury 328. 



The amount of carbonic acid given off is small, in good 

 agreement with what has been said above; the average is 203. 



The mutual differences between the 3 experiments are so small 

 that we may well pay no attention to them. 



10* 



