60 



Metabolism of Healthy Man. 



METABOLISM EXPERIMENT No. 140. 



Subject, A. H. M., January 31, 1906. (Same subject as in 

 experiment No. 137.) 



The subject entered the chamber at 8 h 15 m a. m., dressed in sweater, heavy- 

 underwear, trousers, and shoes as in the two previous experiments. He sat 

 in an ordinary chair until the beginning of the experiment, which was at 

 9 h 45 m a. m. Immediately after the experiment began he rolled over from 

 the chair into the bed, covered himself with a double blanket and then lay 

 awake until 12 h 45 m p. m. In this, as in preceding experiments, the subject 

 used the push-button to indicate that he was awake. After the conclusion of the 

 morning period the subject got up, went to the food aperture, and placed in 

 it the clinical thermometer, and then sat in the chair for 3 hours. He was 

 drowsy in the morning, but did not sleep. He said he was very quiet until 

 the period was nearly over and then turned over somewhat. He was less 

 drowsy while sitting up, studying fully half the time. 



The pulse and respiration were recorded by means of the pneumograph and 

 are given in table 26. The body temperatures as measured sublingually by 

 means of the clinical thermometer were as follows: 9 h 45 m a.m., 98.5 F. ; 

 12 h 45 m p. m., 97.9 F. ; 3 h 45 m p. m., 97.9 F. The metabolism measurements 

 for the two 3-hour periods are given in table 44. 



Table 26. Record of pulse and respiration Metabolism experiment No. HO. 



The carbon-dioxide excretion per hour for the period when the subject was 

 lying awake was 24.7 grams, and for sitting, 27.5 grams or 10.2 per cent 

 less when he was lying awake. Like comparison of the amounts of oxygen 

 absorbed shows 23.7 per cent less while lying awake. The water vaporized 

 was 6 per cent higher during the period of lying awake than during sitting, 

 which is in conformity with the fact that the water vaporized during sleep, 

 when the subject is lying covered in bed, is sometimes higher than when he 

 is sitting up. The activity for the period of lying awake was undoubtedly 

 less than that which would be considered normal under such conditions. 



