308 



THE SO-CALLED SECONDARY ELECTROMOTIVE 



Examples of experiments on muscle. Sartorius, extrapolar leading-off 

 contacts at cc'. Polarising current led in at AB ; short duration of 

 closure. 



A| IB | c 4(/ 



We postpone the explanation of the appearances observed to the 

 next section. From experiments with intrapolar leading-off, it was 

 to be expected that the phenomena would also appear more forcibly 

 with extrapolar leading-off, if one leading-off electrode was united 



