. Carnegie Institution of Washington publication. ZUNTZ-GEPPERT AND BENEDICT METHODS. 131 in sixth period. Average barometric pressure, mm.; average tempera- ture of air with spirometer unit, ° C.; with Zuntz-Geppert apparatus, ° C. H. F. T., January 27, 1912.—Spirometer unit, 4 periods; Zuntz-Geppert apparatus, 2 periods; periods with each apparatus in series. Subject lay on side instead of on back as usual. He said that, in second period with Zuntz- Geppert apparatus, inhalation seemed difficult and on examination it was found that the membrane on the ingoing valve was dry. Pul
. Carnegie Institution of Washington publication. ZUNTZ-GEPPERT AND BENEDICT METHODS. 131 in sixth period. Average barometric pressure, mm.; average tempera- ture of air with spirometer unit, ° C.; with Zuntz-Geppert apparatus, ° C. H. F. T., January 27, 1912.—Spirometer unit, 4 periods; Zuntz-Geppert apparatus, 2 periods; periods with each apparatus in series. Subject lay on side instead of on back as usual. He said that, in second period with Zuntz- Geppert apparatus, inhalation seemed difficult and on examination it was found that the membrane on the ingoing valve was dry. Pulse-rate for the most part uniform. Respiration-rate uniform in all periods. Average barometric pressure, mm.; average temperature of the air in the spi- rometer unit, ° C.; in the Zuntz-Geppert apparatus, ° C. H. F. T., January 29, 1912.—Zuntz-Geppert apparatus, 3 periods; spirom- eter unit, 2 periods; periods with each apparatus in series. With the Zuntz- Geppert apparatus the more recent form of Zuntz valves (see fig. 19, page 54) and covering of fish membrane were used. With spirometer unit, the newer form of moistener (see fig. 12, page 37) was employed. Mouthpiece used with both apparatus. Subject lay on right side throughout experiment. In second period with spirometer unit, subject said that his throat became somewhat dry; the moistener was therefore moistened and in the second period with this apparatus the subject said that the air seemed more agree- able. Pulse-rate in individual periods for the most part uniform. In the first period of the experiment the pneumograph was not properly adjusted, so that a good record of the respiration was not obtained. In the second period there were a number of apnoeic respirations, this being even more marked in the third period. In the last two periods of the experiment (with the spirometer unit), respiration-rate uniform. Average barometric pressure, mm.; average temperature of air in spirometer unit, 21
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