1038 
The alternation of the ventricle is usually followed by the halved 
rhythm of the ventricle. 
We see this last rhythm repeatedly return spontaneously to the 
normal twice as quick rhythm. Other variations of rhythm occur 
likewise e.g. between the normal rhythm of the ventricle and bige- 
minusgroups (in which every third systole of the ventricle has fallen 
AAS 
Fig. 11 
/ 
Fig. 12 
{SCC 
