BASAL METABOLISM. 



89 



made with the same apparatus. Both basal values find their subse- 

 quent use in a consideration of the results of the food experiments. 



The series of experiments with L. E. E., in which only the chair 

 calorimeter was used, extended over a relatively short period of time 

 i. e., from March 14 to May 11, 1910. (See table 32.) The average 

 values for both the carbon-dioxide production and the oxygen consump- 

 tion agree very well with those found with the subjects previously 

 considered. Those for the heat production show a striking disagree- 

 ment with each other, the high value of 81 calories being found for the 

 first hour, while a low value of 68 calories is found in the third hour of 

 one experiment. It is probable that these variations in the values for 

 heat output are due to the fact that they have not been corrected for 

 changes in body-temperature, as these measurements were not made; 

 hence the heat values correspond to heat elimination rather than to 

 heat production. 



TABLE 32. Basal metabolism of L. E. E. at different times of day in chair-calorimeter 

 experiments. Boston. (Values per hour.) 



'The beginning of the "First hour" was for this subject approximately between 8 h 30 m a. in. 



and 9 h 30 m a. m. 

 2 Heat eliminated corrected for change in body-weight, but not for change in body-temperature. 



Another subject, V. G., who was measured in both the chair calo- 

 rimeter and the bed calorimeter, was not temperamentally adapted for 

 experimentation with such a fine point at issue as the influence of the 

 ingestion of food. The basal values obtained with the chair calorimeter 

 show larger variations from hour to hour than have thus far been noted 

 with any of the subjects; indeed, the measurements of the heat output 

 were lost in the experiment of January 21. (See table 33.) Measure- 



