35 



distinctly' how the extent of the systole depends npon the metabolic 



— p «I 





:- C 3 o 



1^ rll 



- = "3 "^ -H 



condition of the heart-nuisenlature. I found this fact everywhere 

 contirmed in my frog's hearts poisoned with veratrine. 



By a second observation of my fro2;'s hearts poisoned with vera- 

 trine, it is shown, that the duration of the rt-y-interval in unchanged 



3* 



