36 



KANSAS UNIVERSITY SCIENCE BULLETIN. 



concentrations of NaCl were intravenously injected in the pro- 

 portion of 4 cc. per kilo fish : 



Table I. Effect of NaCl solutions. 



Curve 3. After 2m NaCl. Heart directly attached to lever. 



Cnrre 3. 



f\l\A 



sya. dl 



Upper, respiration. Lower, heart. Time, five seconds. Systole and 

 inspiration much prolonged. 



Curve 4, 2m NaCl. Hiirthle mercury manometer. 



Normal, 10:35 A. M. 

 Heart rate, 36. 



Respiration rate, 36. 



Pressure, 20. 



10:40 A.M. 10:45 a.m. 



Heart rate, force slightly Heart rate, 30, force in- 

 increased, creased. 



Respiration rate 27, Respiration rate 36, 



force slightly de- force less, 

 creased. 



Pressure, 23. Pressure, 23. 



