METHODS OF MEASUREMENT. 



41 



End 



Start 



Re volutions of wheel 



Average revolutions per min. 



TABLE 2. Typical record of walking experiment (continued). 



Distance walked. 



Continuous counter. Period counter. Total distance preliminary to period. 



451 ac 1.33 = 602 meters. 



Distance per minute in period. 



422.5 



Stap-oouater. 



Step-lift counter. 



At end of 1 min. 

 At end of 11 min. 

 For 10 min. 



Tlae. 



9:45 a.m. 



9:55 a.m. 

 10:00 a.m. 

 10:05 a.m. 

 10:13 a.m. 

 10:16 a.m. 

 10:20 a.m. 

 10:23 a.m. 



Time. 



9:56:30 a.m. 

 10:13:00 a.m. 

 10:15:00 a.m. 

 10:18:30 a.m. 

 10:23:30 a.m. 



Heading. 

 91617 



430 x 2 = 860 steps 

 or 86.0 steps per min. 



At end of 1 min. 10 

 At end of 11 min. 10 

 For 10 min. 



Bridge. 

 200 

 209 



235 

 246 

 255 



Beats. 

 73 



136 



66 



133 



Rectal temperature record. 



Temperature. 



36.48" G. 



36.62" C. 



Reading 

 sec. 64748.5 

 seo. 64852.9 



104.4 x 0.393 meter 



= 41.0 meters 



or 4.10 meters per min. 



37.02" C. 

 37.19" C. 

 37.35" C. 



Pulse record. 



Seconds . 

 61 



64 

 30 

 59 



Remarks . 



Thermometer inserted. 

 Standing. 

 Started walking. 



Period began. 



Bate . Remarks . 

 71.8 Standing. 

 Period began. 



127.5 Walking. 

 132.0 Walking. 

 155.3 Walking. 



131.6 average for walking. 



SUBJECTS. 



Eight subjects were used in this study of the effect of muscular work 

 upon the metabolism, but the greater part of the material was collected 

 with two men, E. D. B. and W. K. A general description of these 

 subjects follows. The body-surfaces were obtained by means of the 

 height-weight chart of the Du Boises. 1 Experiments were made with 

 still another subject (T. J. L.), but as he found difficulty in breathing 

 through the mouthpiece and the results obtained with him were ob- 

 viously erroneous, the data have not been included in this report. 



A. J. 0. Born September 1884; age 30 years; height 180 cm.; nude weight 

 69.5 kg.; body-surface 1.88 sq. meters. Had previously served as subject in 

 experiments at the Nutrition Laboratory. No trade or special training, but 

 was of athletic build and with some experience as a professional ball-player. 

 Discontinued experiments with him early in the research, as he was unreliable 

 in his engagements. 



H. R. R. Born March 13, 1896; age 19 years; height 185 cm.; nude weight 

 70 kg.; body-surface 1.93 sq. meters. Student at Harvard University. Not 

 especially interested in sports. Somewhat ungainly in movements and not 

 "easy going" in his walk. Had a tendency to stoop and was of a nervous 

 temperament. While he was anxious and willing to cooperate in every way, 

 his duties at college made it difficult to use his services as much as would other- 

 wise have been possible. 



Bois and Du Bois, Arch. Intern. Med., 1916, 17, p. 863. 



