T. M. C, 12 Noon To 12h50m P. M., December 17, 1910

Light breakfast at 7h30m a. m. (two small slices toasted and buttered white bread and cupful of coffee, with cream and sugar). Rate of chewing, 68 to 86 per minute in first period, 74 to 87 per minute in second period; difficult for subject to keep mouth closed when chewing.

J. J. C, 9h27m A. M. To 1h55m P. M., January 4,1911. 64.6 Kilograms

Head confined in wooden head-rest to prevent its moving out of position during sleep. Slept a few minutes in first basal period and nearly all of third basal period. Adhesive plaster over lips in basal periods. Rate of chewing, 80 to 92 per minute; in second chewing period, stopped chewing once and opened mouth for about 3 seconds. Nitrogen in urine per hour, 8 a. m. to 5h40m p. m., 0.37 gram.

V. G., 8h35m A. M. To Lh30m P. M., January 0,1911. 56 Kilograms

Asleep in second basal period; second chewing period shortened to 7 minutes, as subject was dizzy and had some difficulty in breathing; also dizzy last two minutes of third chewing and at end of fourth chewing periods. Rate of chewing, 46 to 75 per minute. Urinated at 7h50m a. m. and urinated and defecated at 2h40m p. m. Nitrogen in urine per hour, 7h50m a. m. to 2h40m p. m., 0.33 gram.

F. G. B., 8h40m A. M. To 10h05m A. M., January 9, 1911. 83.5 Kilograms

Urinated at 7h44m a. m., 8h28m a. m., and 9h24m a. m. Rate of chewing, 93 to 103 per minute in first chewing period, 100 to 104 per minute in second chewing period.

F. G. B., 11h03m A. M. To Llh45m A. M., May 5, 1911

Chewing periods followed water-drinking experiment of same date (see table 79, page 147); for data regarding basal period, see statistics for that experiment. Chewed with mouth closed; rate of chewing, 90 to 95 per minute in first period and 112 to 114 per minute in second period. Nitrogen in urine per hour, 10h54m a. m. to llh47m a. m., 0.41 gram.

V. G., Llh26m A. M. To 12h31m P. M., January 31, 1911. 54.9 Kilograms

Chewing periods followed water-drinking experiment of same date (see table 74, page 146); for data regarding basal periods, see statistics for that experiment. Opened mouth several times during chewing. Nitrogen in urine per hour 7h45m a. m. to 12h50m p. m., 0.32 gram.

J. J. C, Lh03m P. M. To 2h09m P. M., February 7, 1911. 63.9 Kilograms

Chewing periods followed water-drinking experiment of same date (see table 75, page 146); for data regarding basal periods, see statistics for that experiment. Nitrogen in urine per hour, 7h30m a. m. to 2h46m p. m., 0.41 gram.

Table 60. - T.M.C., December 17, 1910

Chewing gum (6 grams). Lying. (Values per minute).

Basal values (Nov. 14 and 16, 1910): CO2. 163 c.c; O2, 187 c.c; heat (computed), 0.01 cal.; average pulse rate, 72; average respiration rate, 13.

1Subject began chewing at llh50m a. m.

Table 61. - J. J. C, January 4, 1911

Chewing gum (9 grams). Lying. (Values per minute).

1Subject began chewing at 12h07m p. m.

Table 62. - V.G., January 5, 1911

Chewing gum.1 Lying. (Values per minute).

1Amount not recorded.

2Subject began chewing at llhllm a. m.

Table 63. - F.G.B., January 9,1911

Chewing gum (8 grams). Lying. (Values per minute).

1Subject began chewing at 9h08m a. m.

Table 64. - F. G. B., May 5,1911

Chewing gum (6grams). Lying. (Values per minute).

1Subject began chewing at 10h52m a. m.

Table 65. - V. G., January 31, 1911

Chewing rubber stopper. Lying. (Values per minute).

1Subject began chewing stopper at llh20m a. m.

Table 66. - J. J. C, February 7, 1911

Chewing rubber stopper. Lying. (Values per minute).

1Subject began chewing stopper at 12h50m p. m.

Table 67. - Increase In Metabolism Of Subjects Drinking Water, Coffee, And Beef Tea, And Chewing Gum

(Calorimeter experiments; subject sitting.)1

1Except in experiment with V. G., Dec. 19, 1910.

2Period here given is the actual time of chewing.

3Subject in bed calorimeter.

4Taken in varying amounts at intervals during experiments. For details, see tables 69 to 73.

5Subject finished drinking coffee 13 minutes after beginning of experiment.

6About 250 grams at beginning of each hour in first 4 hours of the experiment.

7Subject finished drinking beef tea from 14 to 38 minutes after the beginning of the respective experiments in the Middletown series; from 25 to 31 minutes before the experiments in the Boston series. 8Obtained by indirect calorimetry.

Table 68. - Increase In Metabolism Of Subjects Drinking Water, Coffee, And Beef Tea, And Chewing Gum

(Respiration experiments; subject lying).

1Period here given is the time between drinking of material or beginning of chewing to the end of the last period on the respiration apparatus. 2One piece of chewing gum has been found to weigh 3 grams. 3Amount of gum not recorded. 4Temperature not recorded.