1909.] 



Minutes. 

 to 5 In saline 



5 to 12 In ether 



Alcohol, Ether, and Chloroform, etc. 



Left. Eight. 



555 



12 to 20 In saline -i 



20 to 26 In chloroform... 



26 to 34 In saline <j 



1 

 I 



!> In saline. 



In chloroform. 



y In saline. 



In ether. 



yin saline. 



J 



(Continuation of record not reproduced.) 

 40 to 45 In saline In saline. 



45 to 52 In chloroform, contractility lost in In ether, contractility lost in 6 minutes. 



4£ minutes 



52 to 61 In saline 



61 to 68 In ether, contractility lost in. 4 

 minutes. 



In saline. 



In chloroform, contractility lost in 7 

 minutes. 



Fig. 7. — August 26, 1908. Simultaneous Eecord of the Effects of Chloroform, - 01 m., 

 and of Ether, 0"12 m., on Two Sartorius Muscles. 



The general conclusion from the foregoing experiments is given in the 

 following tabular summary : — 



Physiological Equivalence. 





By molecules. 



By weight. 



By volume. 





100 



100 



100 



Ether 



12 



19 '3 



21 -3 





1 



2'6 



1 -4 



I.e. 1 molecule chloroform = 12 molecules ether = 100 molecules alcohol. I.e. a chloroform 

 molecule is 12 times as powerful as a molecule of ether and 100 times as powerful as a molecule 

 of alcohol. 



[By weight approximately, 1 gramme of chloroform = 8 grammes of ether = 40 grammes of 

 alcohol. 



By volume approximately, 1 c.c. of chloroform = 15 c.c. of ether = 75 c.c. of alcohol.] 



