ZUNTZ-GEPPERT AND BENEDICT METHODS. 



135 



ratus, respiration was regular in rate but varying in depth, the position of the 

 chest as indicated by the pneumograph being different at different times. 

 Average barometric pressure, 754.5 mm. ; average temperature of air in both 

 apparatus, 20.5° C. The preliminary ventilation by minutes preceding the 

 two periods with the Zuntz-Geppert apparatus is shown herewith. 



M. B., February 22, 1912. — Spirometer unit, 2 

 periods; Zuntz-Geppert apparatus, 2 periods; appa- 

 ratus alternated. Pulse-rate fairly uniform in the 

 different periods. Pneumograph with Zuntz-Gep- 

 pert apparatus did not work properly and accord- 

 ingly the curves do not show the character of the 

 respiration plainly. Average barometric pressure, 

 735.3 mm. ; average temperature of air in spirometer 

 unit, 19.3° C; in Zuntz-Geppert apparatus, 15.4° C. 

 The preliminary ventilation by minutes preceding 

 the three periods with the Zuntz-Geppert apparatus is shown herewith. 



M . B., February 27, 1912— Zuntz-Gep- 

 pert apparatus, 3 periods ; spirometer unit, 



2 periods; apparatus alternated for the 

 most part. Pulse-rate for the most part 

 uniform. Respiration regular in the indi- 

 vidual periods but varying from one period 

 to another. Average barometric pressure, 

 740.3 mm. ; average temperature of air in 

 spirometer unit, 21.0° C.; in Zuntz-Gep- 

 pert apparatus, 18.7° C. The preliminary 

 ventilation by minutes preceding the three 

 periods with the Zuntz-Geppert apparatus is shown herewith. 



M. B., March 2, 1912.— Subject had 

 light breakfast at about 7 a. m. ; experi- 

 ment began l h 12 m p. m. Spirometer unit, 



3 periods; Zuntz-Geppert apparatus, 3 

 periods; apparatus alternated. Mouth- 

 piece used for both apparatus. Pulse-rate 

 regular. Respiration uniform in individ- 

 ual periods. Average barometric pressure, 

 766.9 mm. ; average temperature of air in 

 spirometer unit, 20.6° C. ; in Zuntz-Gep- 

 pert apparatus, 19.1° C. The preliminary ventilation by minutes preceding 

 the three periods with the Zuntz-Geppert apparatus is shown herewith. 



Ma. B., February 29, 1912. — Spirometer unit, 3 

 periods; Zuntz-Geppert apparatus, 2 periods; first, 

 second, and last periods with spirometer unit, third 

 and fourth periods with Zuntz-Geppert apparatus. 

 Pneumatic nosepieces used with both apparatus. 

 Subject active in first period with Zuntz-Geppert 

 apparatus, but in others fairly quiet. Pulse-rate 

 regular; also respiration. Average barometric pres- 

 sure, 762.7 mm. ; average temperature of air in spiro- 

 meter unit, 21.1° C.; in Zuntz-Geppert apparatus, 

 20.6° C. The preliminary ventilation by minutes preceding the two periods 

 with the Zuntz-Geppert apparatus is shown herewith. 



