. Carnegie Institution of Washington publication. DISCUSSION OF RESULTS. 139 5h 30m p. m., one may assume that the activity was essentially of the grade I, i. e., minimum. Nevertheless the pulse-rate is considerably higher in the period between 4 p. m. and 4h 30m p. m. than in the two following periods, as is shown by the pulse curve and the figures for the pulse-rate per minute. As a matter of fact, the total metabolism is likewise higher in the first period as is evidenced by the carbon- dioxide output per hour which is given on the pulse curve. In this curve, therefore, which excludes the e
. Carnegie Institution of Washington publication. DISCUSSION OF RESULTS. 139 5h 30m p. m., one may assume that the activity was essentially of the grade I, i. e., minimum. Nevertheless the pulse-rate is considerably higher in the period between 4 p. m. and 4h 30m p. m. than in the two following periods, as is shown by the pulse curve and the figures for the pulse-rate per minute. As a matter of fact, the total metabolism is likewise higher in the first period as is evidenced by the carbon- dioxide output per hour which is given on the pulse curve. In this curve, therefore, which excludes the extraneous activity, we find the pulse-rate following very closely the total metabolism. While the kymograph curve did not indicate muscular activity, nevertheless the pulse-rate gave evidence of an increased internal activity. A comparison of the records obtained for the muscular activity, the pulse-rate, and the metabolism in the observation with A. D. on May 19, 1913, gives further evidence on this important point (see figure 50). In the two periods from 3h 35m p. m. to 4 p. m. and from 4h 31m p. m. to 4h 54ra p. m., the muscular activity shown by the kymograph records would be classified as I. The pulse-rate in the first of these periods (period II) was 113 and in the second (period IV) 104. This variation in the pulse-rate is accompanied by a like variation in the carbon- dioxide production, which was grams per hour in period II, and grams per hour in period IV. Here again the pulse-rate is seen to be a closer index of the total katabolism than is the kymograph record. PERIOD - II C02 per hr PERIOD- IV. , ,,.â ..H" »»' â »",<H-r-|- T~*~ ««|J p^^-â# r~ AD. MAY Fig. 50. Pulse-rate and kymograph curves for A. D., May 19, 1913. Two selected periods which were obtained with the infant J. M. in the observation of April 4, 1913, are compared in figure 51. These periods, both of which had an activity of I, also show the pu
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