58 Metabolism of Healthy Man. 



The pulse and respiration were taken by means of the pneumograph, and are 

 given in table 23. The body-temperature was taken by means of the electrical- 

 resistance rectal thermometer. 

 November 13: C. November 14: o^. 



5" 00 m p. m 37.00 



6 00 p. m 36.75 



7 00 p. m 36.69 



8 00 p. m 36.65 



9 h 12 m a. m. 



10 00 a. m. 



11 00 a. m. 



12 12 p. m. 



36.98 

 37.12 

 37.16 

 37.25 



The measurements for the carbon-dioxide and water output, oxygen absorp- 

 tion, heat production, and heat elimination are given in table 44. 



METABOLISM EXPERIMENT No. 138. 



Subject, A. H. M., January 29, 1906. (Same subject as in 

 experiment No. 137.) 



This and the two following experiments were carried out with one subject 

 to obtain information on the question of the difference in metabolism when the 

 subject was standing, sitting in a chair, or lying upon a bed covered with a 

 double blanket. 



The subject entered the respiration chamber at about 8 a. m. after a normal 

 breakfast. No record was made of the food eaten. During the morning period 

 from 9 h ll m a. m. to 12 h ll m p. m. the subject was lying upon the bed, covered 

 with a double cotton blanket. He was very quiet, and as evidence that he was 

 awake all of the time, every 10 minutes he pressed a push-button which rang 

 a bell in the laboratory. The subject rose at 9 h 16 m a. m. and remade the bed. 

 The body-temperatures were measured sublingually by a clinical thermometer, 

 and for this period were at 9 h ll m a. m., 97.8 F.; 12 h ll m p. m., 98.1 F. 



After the period in bed was finished, the subject rose, made his bed, opened 

 the food aperture to procure food for his lunch, and ate until 12 h 54 m p. m., 

 at which time he passed out the uneaten food. After he had finished eating 

 he sat down in the chair and remained quietly seated until the end of the 

 experiment, except at l h 29 m p. m., when he went to the food aperture. The 

 afternoon period continued from l h 29 m p. m. until 4 h 29 m p. m. The body- 

 temperature taken by the subject sublingually at the beginning of this period 

 was 98.4 F. ; and at the end, 98.1 F. The measurements of the metabolism 

 were made in two 3-hour periods and one intermediate period, and the results 

 are recorded in table 44. The records of the pulse and respiration for these 

 periods are given in table 24. 



The results for this experiment show that the carbon-dioxide excretion per 

 hour for the period lying awake was 27.4 grams and for sitting, 32.7 grams or 

 16.2 per cent less while lying awake. Similar comparisons for the oxygen 

 absorbed, heat produced, and water vaporized show, respectively, 15.1, 25.2, and 

 2 per cent less while lying awake. The digestive processes were practically 

 the same for both the above conditions since the subject had eaten before each 

 period. 



