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. 



Cvarre 3. 



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

 inspiration much prolonged. 



Curve 4. 2m NaCl. Hiirthle mercury manometer, 



CUTTO 4. 



Normal, 10:35 A. M. 

 Heart rate, 36. 



Respiration rate, 36, 



Pressure, 20. 



10:40 A.M. 



Heart rate, force slightly 

 increased. 



Respiration rate 27, 

 force slightly de- 

 creased. 



Pressure, 23. 



10:45 A.M. 



Heart rate, 30, force in- 

 creased. 



Respiration rate 36, 

 force less. 



Pressure, 23, 



