"BU 
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At 2 of Fig. 11 after the induction-stroke there occurs an extrapause 
without extrasystole of the ventricle, after which the ventricle- 
bigeminy appears again. 
3. LExtra-stimulation of the auricle. (Fig. 12). 
Of this row follows here a figure in which I reduced a frog’s 
heart (curvesheet 99) pulsating in the halved rhythm to the normal 
