552 Dr. A. D. Waller. Comparative Power oj [June 24, 



Minutes. 

 toJ5 In normal saline 



5 to 10 In alcohol, 1 mol. 



solution, contrac- 

 tility lost in 4 

 minutes. 



10 to 19 In normal saline ... < 



19 to 24 In chloroform, C 

 mjlOO solution,! 

 contractility lost ] 

 in 3 minutes. [_ 



24 to 34 In normal saline . . . <{ 



I. Alcohol v. Chloroform. 



Left. 



Right. 



(Continuation of record not reproduced.) 



• In normal saline. 



In chloroform, W100 

 > sol ution, contractility 

 lost in 2| minutes. 



\- In normal saline. 



In alcohol, 1 mol. solu- 

 tion, contractility lost 

 in 3 minutes. 



£- In normal saline. 



35 to 40 In alcohol, I mol. solution, contractility lost 

 in 5 minutes. 



40 to 50 In normal saline 



50 to 55 In chloroform, to/100 solution, contractility 



lost in 4 minutes. 



55 to 70 In normal saline 



70 to 73 ' In ether, 0"2 mol. solution, contractility 



lost in l minute. 



73 to 83 In normal saline 



83 to 88 In alcohol, 1 mol. solution, contractility lost 



in 5 minutes. 



In chloroform, m/100 solution, contractility 



lost in 5 minutes. 

 In normal saline. 



In chloroform, m/100 solution, contractility 



lost in 3J minutes. 

 In normal saline. 



In chloroform, '02 mol. solution contractility 



lost in 1| minutes. 

 In normal saline. 



In alcohol, 1 mol. solution, contractility lost in 

 5 minutes. 



Fig. 4. — August 22, 1908. Simultaneous Eecord of Left and Eight Sartorius Muscles. 

 Comparative Effects of Ethyl Alcohol (molecular solution in normal saline, 5"8 c.c. 

 per 100) and of Chloroform (centimolecular solution in normal saline, 0'08 c.c. per 

 100). Temperature = 20°. In the continuation of this experiment, comparisons 

 were made with - 2 m. ether and 0'02 m. chloroform (not reproduced). 



It appears from this experiment that chloroform of centimolecular strength 

 is slightly more effective than alcohol of molecular strength. 

 ■ From a further experiment made with chloroform at 0'009 m. as compared 

 with alcohol of standard strength, it is found that at this strength chloroform 



