Dr. A. SL X, 90Y0H3. 
Flf. I 
upon the ampJJhido 
R* Sl¬ 
at rt<v^rWtrngrain in Enty*. 
Fif. 2, 
F,f.3. 
Independence of the electrogram with rnped In the myogram In the 
Emya unter the influence of cWom form-pot toning. 
\Wwtt the 
