128 FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



vidual records for the basal and chewing periods. Records of the body- 

 temperature, when available, were made with the rectal thermometer 

 at the beginning of the periods and at the end of the experiment. 

 Analyses of chewing gum give 62 to 69 per cent of soluble carbohy- 

 drates. When the basal values were determined immediately before 

 the chewing periods, the times given include both basal and chewing 

 periods. 



CALORIMETER EXPERIMENTS. 



A. L.L.,8 }> 40 m a.m.to4 h 40 m p.m., Aprils, 1906. 67.6 kilograms. Urinated 

 at 4 h 42 m and 7 p. m. Studied most of time and very quiet. Chewed rapidly 

 and regularly. Basal periods: body-temperature, 36.69 and 36.59 C.; 

 pulse rate, 57; respiration rate, 18. Chewing periods: body-temperature, all 

 records, 36.65 C.; pulse rate, 58; respiration rate, 19. 



H. R. D., 8 h 37 m a. m. to 4 h 37 m p. m., April 4, 1906. 58.2 kilograms. Uri- 

 nated at 7 h 15 m a. m. (after enema) and 4 h 48 m p. m. Sat quietly reading. 

 Rate of chewing, 72 to 107 per minute, first chewing period; 81 to 85 per minute, 

 second chewing period. Basal periods: body-temperature, 36.73 and 

 36.67 C.; pulse rate, 69; respiration rate, 18. Chewing periods: body-tem- 

 perature, 36.63, 36.76, and 36.76 C.; pulse rate, 69; respiration rate, 19. 



H. B. W., 8 h 05 m a. m. to 4 h 05 m p. m., April 26, 1907. 62.6 kilograms. 

 Urinated and defecated without enema before coming to laboratory. Very 

 quiet in first basal period, but less quiet in second period; increasingly restless in 

 chewing periods. Chewed steadily most of time; rate 64 to 96 per minute. 

 Basal periods: body-temperature, 36.83 and 36.68 C.; pulse rate, 64; respi- 

 ration rate, 18. Chewing periods: body-temperature, 36.74, 36.75, and 

 36.76 C.; pulse rate, 66; respiration rate, 18. 



J. J. C., 8 h 14 m a. m. to 12*14 m p. m., March 25, 1910. 64.8 kilograms.- 

 Urinated 5 h 30 m a. m., 8 h 35 m a. m., and 12 h 35 m p. m. Reported asleep 9 h 08 m , 

 9 h 20 m , and 9 h 40 ra a. m. Basal periods: pulse rate, 60; respiration rate, 18. 

 Chewing periods: pulse rate, 63; respiration rate, 19. 



V. G., 9 h 12 m a. m. to 2^04 m p. m., December 19, 1910. 55 kilograms. In 

 bed calorimeter. Was quiet throughout experiment except for turning over 

 at beginning of second basal and last two chewing periods; had to be awakened 

 several times in second basal period, but awake most of third basal period. 

 Complained of being warm, but temperature of chamber did not exceed 21 C. 

 at any time. Basal periods: pulse rate, 69; respiration rate, 21. Chewing 

 periods: pulse rate, 79; respiration rate, 22. 



V. G., 9 h 07 m a. m. to 12 h 15 m p. m., January 2, 1911. 56.3 kilograms. Very 

 quiet at beginning of basal periods, but most of experiment restless; very rest- 

 less in last chewing period, owing to pain in stomach. Basal periods: pulse 

 rate, 62; respiration rate, 20. Chewing periods: pulse rate, 63; respiration 

 rate, 19. 



T. M. C., 8 h 25 m a. m. to Il h 28 m a. m., January 3, 1911. 47.7 kilograms. 

 Urinated at 7 h 15 m a. m. Read quietly. Rate of chewing approximately 

 two movements of jaws a second. Basal periods: pulse rate, 68; respiration 

 rate, 15. Chewing periods: pulse rate, 77; respiration rate, 17. 



T. M. C., 8 h 43 m a. m. to 12 h 30 m p. m., January 7, 1911. 48 kilograms.- 

 Urinated 6 h 45 m a. in. and I h 44 m p. m. Very quiet throughout experiment. 

 Rate of chewing, 100 to 106 in first chewing period and 88 to 100 in second 

 chewing period. Basal periods: pulse rate, 68; respiration rate, 15. Chewing 

 periods: pulse rate, 78; respiration rate, 16. 



