ZUNTZ-GEPPERT AND BENEDICT METHODS. 



121 



/. /. C., June 13, 1910. Zuntz-Geppert apparatus, 4 periods; tension- 

 equalizer unit, 4 periods; preliminary period, 28 minutes ; apparatus alternated. 

 Subject asleep in last period. No respiration-rates taken by pneumograph 

 and only a few counts made of pulse- and respiration-rates in each period. 

 Rate of preliminary ventilation for 20 liters with Zuntz-Geppert apparatus : 



J. J. C., June 25, 1910. Zuntz-Geppert apparatus, 3 periods; tension- 

 equalizer unit, 3 periods; preliminary period, 49 minutes; apparatus alternated. 

 Pulse-rate counted at three or four different times during each period and, so 

 far as the individual periods were concerned, was quite regular. Respiration- 

 rate taken with pneumograph; rates comparatively uniform in each period. 

 Rate of preliminary ventilation for 20 liters with Zuntz-Geppert apparatus: 



A. G. E., July 18, 1910. Zuntz-Geppert apparatus, 3 periods; tension- 

 equalizer unit, 3 periods; apparatus alternated. Pulse-rate counted only few 

 times in each period; approximately uniform. Respiration-rate obtained with 

 pneumograph; rates uniform, except in second period with Zuntz-Geppert 

 apparatus, when there was considerable fluctuation in type and depth. Rate 

 of preliminary ventilation for 20 liters with Zuntz-Geppert apparatus : 



L. E. E., July 6, 1910. Zuntz-Geppert apparatus, 3 periods; tension- 

 equalizer unit, 3 periods; apparatus alternated. Subject somewhat restless 

 during experiment; stated in first period with Zuntz-Geppert apparatus that 

 the noseclip troubled him considerably, and complained of noseclip in all 

 periods in which it was used. Pulse-rate only 3 to 4 counts in each period; 

 uniform as to individual periods. Respiration-rate recorded with pneumo- 

 graph. With Zuntz-Geppert apparatus respiration seemed to be more labored 

 in first period but respiration-rate approximately uniform with this apparatus 

 With tension-equalizer unit a number of delayed respirations in latter half of 



