558 



Their far-going conclusions, however, which have connection witli 

 important generally physiological problems are not jiistitied. Their 

 experiments do not furnish the proof that conductivity and contract^ 

 ility are 2 separate properties, because the muscles (heart) swollen 

 by water are already maximally abbreviated, and consequently an 

 active abbreviation cannot become manifest. 



In this short preliminary communication I wish to desist from 

 far-going conclusions and considerations, but 1 observe only that 

 no more than the contractility and the irritability, the contractility 

 and the actioncurrent may be separated. 



Last year Einthoven ^) has moreover pleaded in one of his essays 

 for the connection between contractility and impulse-currents. 



1) PHügers Archiv Bd. 166, Seite 109, 1916. 



