RESISTANCE OF FISHES TO LACK OF OXYGEN. 



447 



relationships. Table III. is a summary of experiments performed 

 with starving fishes in N/2$,ooo solutions of KCN. 



TABLE II. 



Showing the effect of starvation upon the resistance of rock bass (Ambloplites 

 rupestris Raf.) to lack of oxygen. The control fishes were in every case collected 

 just previous to the conducting of the experiment. Control and experimental 

 fishes were placed in the same container. Water containing about .1 c.c. 

 oxygen per liter flowed through the experimental bottle at the rate of 300 c.c. 

 per min. Dying time is indicated in minutes. C = Control; E = Experiment. 



Because of the fact that a TV/25, ooo KCN solution is relatively 

 more fatal than water containing practically no oxygen, the 

 figures in Table III. are smaller than those in Table II. and the 

 differences in the resistance of the experimental and the control 

 fishes of correspondingly less magnitude. However Table III. 

 shows the same initial increase in resistance (decrease in suscepti- 



TABLE III. 



Showing the effect of starvation upon the resistance of rock bass (Ambloplites 

 rupestris Raf.) to N/25,ooo solution of KCN. Control collected just previous 

 to experiment. Control and experimental fishes in same container. Dying 

 time indicated in minutes. C = Control; E = Experiment. 



Serial Number and Weight of Fishes. 



bility) upon the part of the starved fishes; also as in the low 

 oxygen experiments, after 52 days' starvation, we note that the 



