1911.] Ventilation of the Lung during Chloroform Narcosis. 367 



Table XII. 



T 



intervals 







r requency 



Amplitude ot 



Lung 



oi time, 



Anaesthetic. 





respiration, 



ventilation, 



in minutes. 







respirations. 



in c.c. 



in c.c. 



0-5 







25 



77 -14 



1929 



-5 

 0-5 



6 '4 per c 



ent. ether 



25 

 21 



59 -77 

 51 -92 

















1-0 







39 



42-86 



1672 



1-0 







36 



40-59 



1461 



1 -o 







37 



39-93 



1478 



1-0 







36 



40-48 



1457 



1 -o 







34 



40-48 



1358 



1-0 







32 



39 -29 



1057 



1-0 







30 



38 -10 



1043 



1-0 







29 



37 -27 



1081 



The whole experiment lasted 82 minutes, and, during the last four 

 minutes, a very high percentage of ether was given in order to kill the 

 animal. The whole data of this experiment are given in Curve VI. 



Example VI. — The procedure was the same as in the last experiment, 

 except that the percentage of ether administered was 13-14 per cent. The 

 measurements are given in Table XIII. 



Intervals 

 of time, 

 in minutes. 



respirations. 



13 — 14 per cent, ether 



1737 

 1644 

 1726 



Not counted : even and regular 

 | 26 -15 | 



Not counted : even and regular 

 | 23 -92 | 



Not counted : even and regular 



During the 16th minute the respiration was shallow, and irregular until 

 the 18th minute, when the ether was discontinued. 



In no case, with the percentage of ether used, up to 15 per cent., did we 



