BED CALORIMETER AND TENSION-EQUALIZER UNIT. 87 



equalizer unit, three 10-minute periods. Pneumatic nosepieces used with 

 tension-equalizer unit. Pulse-rate counted from stethoscope by observer 

 through whole experiment, but only two or three records made in each period 

 with respiration apparatus; respiration-rate obtained from pneumograph with 

 bed calorimeter and from observation by assistant with tension-equalizer 

 unit; two counts made in each period with latter apparatus. Subject asleep 

 much of first period in calorimeter, but awake in second period, and also 

 in periods with the tension-equalizer unit. He stated that the breathing was 

 perfectly free throughout. 



T. M. C, July 12, 1910. — Tension-equalizer unit, four 15-minute periods; 

 bed calorimeter, two 1-hour periods. Pneumatic nosepieces used with tension- 

 equalizer unit. Subject asleep nearly all of first period in calorimeter. Pulse- 

 rate with tension-equalizer unit for most part uniform ; six counts in each period. 

 A number of records of pulse-rate obtained in calorimeter, with variations 

 first period, 72 to 56; second period, 73 to 59. Respiration rate with tension- 

 equalizer unit uniform in depth and character; also uniform in calorimeter. 



T. M. C, November 16, 1910. — Tension-equalizer unit, five 10- to 15-minute 

 periods; bed calorimeter, two 1-hour periods. Pneumatic nosepieces used with 

 tension-equalizer unit. Subject comfortable in periods with the tension- 

 equalizer unit. In bed calorimeter, he read a magazine for first half of first 

 period and was asleep most of the second half; complained that pneumograph 

 made him uncomfortable in calorimeter. Pulse-rate uniform in periods with 

 both apparatus; only two counts obtained in second period with bed calo- 

 rimeter. Respiration-rate also uniform in periods with both apparatus. 



J. J. C, November 3, 1910. — Bed calorimeter, two 1-hour periods; tension- 

 equalizer unit, three 15-minute periods; pneumatic nosepieces used with 

 tension-equalizer unit. Subject asleep most of time in calorimeter. Errors 

 in oxygen determinations in first and third periods with tension-equalizer unit. 

 Pulse- and respiration-rates uniform with both apparatus. 



J. J. C, November 8, 1910. — Bed calorimeter, one period \\ hours, one 

 period 1 hour; tension-equalizer unit, three 15-minute periods; preliminary 

 period, 1 hour 26 minutes. Pneumatic nosepieces with tension-equalizer unit. 

 Subject asleep most of time in bed calorimeter. Pulse- and respiration-rates 

 uniform for most part with both forms of apparatus. 



J. J. C, November 10, 1910. — Three series: Tension-equalizer unit, six 

 15-minute periods, bed calorimeter, two 1-hour periods; finally tension- 

 equalizer unit, three 12- to 15-minute periods; preliminary period, 32 minutes. 

 An attempt was made to begin the experiment at 7 h 55 m a. m. but the results of 

 this period have been omitted, as the metabolism of the subject had not then 

 reached its rest level. Subject rather drowsy in some of the periods with 

 tension-equalizer unit and asleep most of the time in bed calorimeter. In the 

 first series with tension-equalizer unit pulse-rate variable but respiration-rate 

 uniform; in bed calorimeter, pulse- and respiration-rates fairly uniform; in last 

 series with tension-equalizer unit, both pulse- and respiration-rates uniform. 



J. J. C, November 15, 1910. — Tension-equalizer unit, three 10-minute 

 periods, bed calorimeter, three 1-hour periods. Pneumatic nosepieces used 

 with tension-equalizer unit. Subject slept greater part of time in calorimeter, 

 waking occasionally. Only a few counts of pulse-rate obtained with each 

 apparatus; uniform in character. Respiration-rate also uniform. 



V. G., November 4, 1910. — Bed calorimeter, one period If hours, one period 

 1 hour; tension-equalizer unit, four 15-minute periods; preliminary period, 

 1 hour 16 minutes. Pneumatic nosepieces used with tension-equalizer unit. 

 Subject very quiet with both apparatus; asleep most of time in calorimeter. 

 Errors in oxygen determination in two periods due to leaks in tension-equalizer 



