840 
cocain: 29} min. When serum was added the adsorptive action 
revealed itself again distinctly. 
Exp. 20. 0.4 ce. 5°/, cocain + 4.5 ce. rabbit’s serum, which is 
equal to ca. '/, °/, cocain hydrochloricum in serum. 
Stimulation after : Reading taken ae Control (E’’) 
2 min. 1.8 1.8 
4 1.8 1.8 
6 1.8 1.8 
8 1.8 1.8 
10 1.8 1.8 
12 1.8 1.8 
14 1.8 1.8 
16 1.8 1.8 
1.8 1.8 
42 1.8 1.8 
44 1.78 1.8 
46 1.78 1.8 
48 1.78 1.8 
50 1.78 1.8 
52 1.78 1.8 
54 1.76 1.8 
56 1.76 1.8 
58 1.76 1.8 
60 1.76 1.8 
It wil be seen that we found distinet inhibition by serum also in 
this experiment, for after an hour the conductibility of the nerve 
had diminished only slightly. 
This experiment was repeated (exp. 21), which again showed no 
anaesthesia of the nerve. Subsequently we inquired into the action 
of 1 °/, cocain. 
Eep. 22. Liquid: 0.8 ee. 5°/, coeain solution + 4.22 ce. Ringer 
0.9°/, equal to 1°/, cocain hydrochloricum in Ringer’s solution. 
