. Carnegie Institution of Washington publication. 196 COMPARISONS OF RESPIRATORY EXCHANGE. period with the Mueller valves and second period with spirometer unit. Parts of the curves for these two periods are given in figures 52 and 53. Average barometric pressure, mm.; average temperature of air in apparatus with Mueller valves, ° C.; with spirometer unit, ° C. J. J. G., March 19, 1913.—Mueller valves and Tissot spirometer, 3 periods; spirometer unit, 3 periods; preliminary period, 1 hour 5 minutes; periods with two methods alternated. Subject arose and urinated at 9h 25m a. m.;
. Carnegie Institution of Washington publication. 196 COMPARISONS OF RESPIRATORY EXCHANGE. period with the Mueller valves and second period with spirometer unit. Parts of the curves for these two periods are given in figures 52 and 53. Average barometric pressure, mm.; average temperature of air in apparatus with Mueller valves, ° C.; with spirometer unit, ° C. J. J. G., March 19, 1913.—Mueller valves and Tissot spirometer, 3 periods; spirometer unit, 3 periods; preliminary period, 1 hour 5 minutes; periods with two methods alternated. Subject arose and urinated at 9h 25m a. m.; drowsy in second period with spirometer unit. The values for the carbon-dioxide production and oxygen consumption in the first period with Mueller valves are not included in averages, as there were indications that the sample of air was contaminated. Pulse-rate uniform in all periods. Respiration-rate before experiment, 21 per minute; during experiment very regular in type and rate. Average barometric pressure for Mueller valves, mm., and for spirometer unit, mm.; average temperature of air in apparatus with Mueller valves, ° C.; with spirometer unit, ° C. /. J. G., March 20, 1913.—Spirometer unit, 4 periods; Mueller valves and Tissot spirometer, 4 periods; preliminary period, 29 minutes; periods with two methods alternated. Pulse-rate regular throughout experiment. Respiration- rate before experiment, 19 per minute; during experiment, fairly regular in depth. Average barometric pressure, mm.; average temperature of air in apparatus, ° C. with Mueller valves and ° C. with spirometer unit. FIG. 52.—Types of respiration of subject W. J. T. as shown by the pneumograph in the first two periods with the Mueller valves and Tissot spirometer on March 29, 1913. Time line, min- utes. Four-fifths original FIG. 53.—Type of respiration of subject W. J. T. as recorded from the spirometer bell in the second period with the spirometer uni
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