1362 
hatched. In the last week -no further changes in the form of the 
curve are to be found. 
Fig. 4. 
During my experiments, the results of which have been here 
broadly summarized, I found a few other noteworthy details. So a 
record taken on the 14 day gave a definite biphasie oscillation 
instead of the ordinary monophasic P-peak. Another complication 
in the form of the curve was caused by an unusual form of the 
T-peak, which also showed a tendency to alter into a diphasic 
Fig. 5. 
deviation (figs. + and 5) and to start before the R-deviation had 
completely subsided (fig. 5). 
Contrasting with these rather complicated forms, I sometimes 
found more simplified ones in which it was not possible to differen- 
tiate with certainty more than two elementary summits. 
Lastly I found no small number of complexes which had to be 
considered as pathological forms. The principal of these were caused 
by block; even isolated P-deviations could be found. The form 
represented in fig. 6 seems to me to be also a pathological form. 
Fig. 6. 
The pathological processes in these cases are probably caused by 
changes in the temperature, by lesions occurring during the prepa- 
ration, or by the gradual death of the heart itself. 
