88 COMPARISONS OF RESPIRATORY EXCHANGE. 



unit. Pulse-rate variable in bed calorimeter; pulse- and respiration-rates 

 fairly uniform with tension-equalizer unit. 



V. G., November 7, 1910. — Bed calorimeter, two 1-hour periods; tension- 

 equalizer unit, three 15-minute periods; preliminary period, 1 hour 6 minutes. 

 Pneumatic nosepieces used with tension-equalizer apparatus. Subject asleep 

 greater part of time in calorimeter; quiet with tension-equalizer apparatus. 

 Pulse- and respiration-rates fairly uniform throughout experiment. 



L. E. E., December 9, 1910. — Tension-equalizer unit, two 15-minute periods; 

 bed calorimeter, three 45-minute periods. Pneumatic nosepieces used with 

 tension-equalizer apparatus. Subject very quiet throughout experiment. 

 Pulse-rate uniform with tension-equalizer unit; with calorimeter, variable, 

 rate in first period being 55 to 62, in second period 50 to 58, and in third period 

 55 to 62. Respiration-rate uniform throughout experiment as counted from 

 pneumograph. 



R. J. C, June 16, 1911. — Tension-equalizer unit, three 15-minute periods; 

 bed calorimeter, three 45-minute periods . Pneumatic nosepieces used with 

 tension-equalizer unit. Subject quiet in calorimeter in first period; somewhat 

 restless in second and third periods in this apparatus. Pulse- and respiration- 

 rates uniform with tension-equalizer unit. Pulse-rate variable in last two 

 calorimeter periods; no respiration-rate recorded with this apparatus. 



H. F. T., August 17, 1911. — Bed calorimeter, one 99-minute period, tension- 

 equalizer unit, four 15-minute periods; preliminary period, approximately 

 2 hours 18 minutes. Pneumatic nosepieces used with tension-equalizer unit. 

 Subject was quiet with tension-equalizer unit. Pulse- and respiration-rates 

 uniform throughout experiment, except that in last part of bed-calorimeter 

 period there was a tendency toward apnoea. 



H. F. T., August % %, 1911. — Bed calorimeter, two 45-minute periods; 

 tension-equalizer unit, four 15-minute periods. Pneumatic nosepieces with 

 tension-equalizer unit. Subject quiet throughout experiment; pulse- and 

 respiration-rates uniform in each period. 



Mfifj 



• » i i i » i i i 1 i i i 



Fig. 35. — Type of respiration of subject H. F. T. as shown by chest pneumograph in 

 the first period with the bed calorimeter on August 29, 1911. 



H. F. T., August 29, 1911. — Five series: First, tension-equalizer unit, three 

 15-minute periods; second, bed calorimeter, two 45-minute periods; third, 

 tension-equalizer unit, three 15-minute periods; fourth, bed calorimeter, two 

 45-minute periods, fifth, tension-equalizer unit, two 15-minute periods. 

 Pneumatic nosepieces with tension-equalizer unit. Subject quiet throughout 

 experiment. In the fifth period of the experiment, i. e., the second period in 

 the first series with the bed calorimeter, the determination of the oxygen 

 consumption was defective. The pulse-rate was uniform throughout. With 

 the exception of some apnoea shown in the first series with the tension-equalizer 

 unit and in the first period of the first series with the bed calorimeter, the respi- 

 ration-rate was also uniform, particularly in the second series with the tension- 

 equalizer unit. The type of respiration obtained with this subject is shown 

 in figure 35. 



H. F. T., August 31, 1911. — Four series: First, tension-equalizer unit, four 

 15-minute periods; second, bed calorimeter, two 45-minute periods; third, 

 tension-equalizer unit, three 15-minute periods; fourth, bed calorimeter, two 

 45-minute periods. Pneumatic nosepieces used with tension-equalizer unit. 



