DISCUSSION OF RESULTS AND GENERAL CONCLUSIONS. 



115 



On several occasions observations were also made with this case of the 

 rate of respiration, and the total ventilation of the lungs, the results being 

 included in the table. Two observations were likewise made of the blood- 

 pressure (Riva Rocci), one at 7 h 30 m a. m. December 12, and the second at 

 7 h 10 m a. m. December 14; both gave a result of 90 mm. It will be seen that 

 on December 10, when the alveolar carbon-dioxide tension was lower and pre- 

 sumably the acidosis greater than on December 14, there was also an increased 

 ventilation of the lungs. The respiration rate, however, did not vary with the 

 alveolar air or with the ventilation of the lungs. 



'At room temperature and observed barometric pressure. 



! Time required for 5 liters. 



On each of the four experimental days with Case Q, the carbon-dioxide 

 tension of the alveolar air was determined after the respiration experiments. 

 The results are given in table 129. On November 19 the subject had taken no 

 breakfast previous to the experiment, but the two experiments on November 

 21 and 22 followed an oatmeal breakfast, while that on November 23, although 

 the subject was without breakfast, followed two oatmeal days. It is interest- 

 ing to note that the carbon-dioxide tension is very much lower on the 19th than 

 it is on the 23d, indicating a greater acidosis on the former day; the experi- 

 mental evidence also shows that the metabolism was considerably higher on 



