482 



Drs. T. L. Brunton and T. Cash. 



The reduplication of the ventricular beat varies in regard to the 

 time of stimulation under minimal stimulation. Thus in H when 

 stimulation falls near the commencement of systole, auricular redupli- 

 cation occurs in 1"*8 and ventricular reduplication in 3"*2. But in 

 the same heart a stimulation during a period of relaxation yielded an 



