1909.] 



Alcohol, Ether, and Chloroform, etc. 



553 



is considerably less effective. The physiological equality of chloroform with 

 our alcohol standard is between 0*010 and 0'009 m., nearer to the former 

 than to the latter value ; we have therefore taken as a sufficiently close 

 approximation that 



T -J-oC = lA or 100A = 1C. 



Minutes. 



35 to 40 In normal saline. 



36 to 41 In alcohol, 1 mol. 



solution, contrac- 

 tility lost in 3" 

 minutes. 



I 



41 to 49 In saline 



49 to 56 In chloroform, 0-009 f 

 mol. solution, con- | 

 tractility lost in«{ 

 6 minutes. 



I 



r 



56 to 63 In saline , 



Fig. 5. 

 Left. Right. 



•In normal saline. 



In chloroform, 0'009 

 mol. solution, con- 

 tractility lost in 

 4i minutes. 



■In saline. 



In alcohol, 1 mol. 

 solution, contrac- 

 tility lost in Z\ 

 minutes. 



\ In saline. 



J 



(Continuation of record not reproduced.) 



70 to 75 In saline In saline. 



75 to 82 In chloroform, 0'009 mol. solution, In alcohol, 1 mol. solution, contractility 



contractility lost in 5 minutes. lost in 3J minutes. 



82 to 88 In saline In saline. 



88 to 94 In alcohol, 1 mol. solution, contrac- In chloroform, 0"009 mol. solution, con- 



tility lost in 3 minutes. tractility lost in 5 minutes. 



Fig. 6. — August 25, 1908. Simultaneous Record of Left and Right Sartorius Muscles. 

 Effects of Ethyl Alcohol, 1 m. solution, and of Chloroform, - 009 m. solution. 

 Temperature = 20° 



