(729 ) 
the original diphasic character of the action-current gets lost and is 
replaced by a monophasic image. We see as it were one top of the 
electromyogram wear off, whereas the other top increases, as already 
Lee *) observed for the M. sartorius. Also Brernstern and GARTEN *) 
saw this. 
The peculiar fluctuations that are often seen at the end of a 
mechanical fatigue-curve, also show themselves in the electric fatigue- 
myogram, even in those moments when every mechanical reaction 
has already disappeared. These fluctuations appear sooner and are 
much more intense, when the whole: animal is narcotized with 
chloroform or ether. In nareotization the action-currents on the whole 
remain longer in existence than the mechanical effects. Warming the 
whole animal. with due regards to provisions to prevent even the 
slightest desiccation, make the mechanical as well as the electric 
reactions on the periodical stimulus increase strongly in size, notwith- 
standing the fatigue ought already to manifest its influence on the 
size of both the phenomena. 
Lastly it may still be mentioned here that, after a short fatigue 
of muscles at weak electric reflex-stimuli and a small weight to be 
raised, I saw, when stopping the artificial stimulus, spontaneous 
contractions appear, which continued for some time’). What was 
striking here was that these spontaneous mechanical phenomena were 
as large as those at electric reflex-stimulation, but that at the same 
time the accessory electric phenomena were much smaller compared 
with those obtained by artificial stimulation. 
1) Lee F. S. Archiv. fiir Physiologie 1887. 
2) Berstein, Garten e. a. Handbuch der Physiologie des Menschen von W. Nacet, 
2e Hälfte, Erster Teil, 4e Band, 1907. 
3) It may be provisionally mentioned here that to complete Samoyrorr’s work I 
succeeded, also in a reflectorical way, in obtaining considerable mechanical and electric 
reactions from the M. gastroenemius, both in consequence of chemical and mechanical 
reflex- stimulation. 
