38 



KANSAS UNIVERSITY SCIENCE BULLETIN. 



Curve 8. M% KCl. Curves secured with heart and respiratorj- ievers. 



Curve 8. 



rv\m\jy 



Upper, respiration. Lower, heart cui've. 



Within one to two minutes after the m% KCl was injected, the heai't 

 action ceased. Respiratory force decreased, rate increased, and stopped in 

 twelve minutes. 



Curve 9. m% KCl. Curves secured with lever and Hurthle man- 

 ometer. 



Curve 9. 



The upper are cardiac, the lower are respiratory records. Time, five 

 seconds. 



Within one minute blood pressure and heart action were zero. Respira- 

 tory rhythm decreased and in twenty minutes stopped. 



Table IL Mean results in respiration, heart action and blood pressure fol- 

 lowing injection of different concentrations of KCl solutions. 



The influence of KCl injections are summarized in table II, 

 which represents the mean results of many experiments of the 

 different series of KCl solutions. Curve 5 is a typical curve 

 secured after injecting the usual amount of an m/32 KCl solu- 

 tion. From the table and the curve it is observed that an m/32 



