PHYSIOLOGICAL CHANGES IN TRANSITION. 



295 



TABLE 85. Rate of oxygen consumption of E. D. B. in periods of transition from grade walking 



to standing Continued. 



had amounted to 40 to 60 per cent of the ventilation during walk- 

 ing. If the normal ventilation of E. D. B. for the standing position 

 be taken as 11 liters per minute (unreduced), as would appear to be 

 the case from the values in table 81, it is seen that this value was 

 approached in a number of instances in the third minute after walk- 

 ing ceased. These values are not maintained in most of the cases, 

 but are succeeded by a higher ventilation, from which it begins slowly 

 to fall. In most of the records, however, the ventilation appears to 

 be in the region of 15 liters per minute and to be still above the nor- 

 mal standing value after 5 minutes of standing. On but three days 

 (January 1 and 3, and February 25) does the ventilation appear to be 

 adjusted to the pre- walking value before the end of the measurements. 

 This would indicate that the body was striving to eliminate the large 

 excess of carbon dioxide previously formed in the work of walking. 



CHANGES IN RATE OF OXYGEN CONSUMPTION (UNREDUCED). 



Comparison measurements of the unreduced oxygen consumption 

 during standing and walking experiments were made from the kymo- 

 graph records on March 10 and 11, 1916, only. These measurements, 

 which, immediately after the transition, were made in one-fifth min- 

 utes, are recorded in table 85. A few measurements of the oxygen con- 



