抄録
The investigation of the effect of anomalous anions on the caffeine contracture was made, with the following results.
1. The caffeine contracture occurs not only in normal Ringer's fluid but also in K-Ringer's, and in the latter it is rather enhanced.
2. The caffeine contracture is enhanced by anomalous anions in the following order regardless of the sorts of Ringer's, SCN>NO3>Br>Cl.
3. The time course of the caffeine contracture is of double phase in the range of the intermediate concentrations of the drug, and this occurs regardless of the sorts of Ringer's and of whether the anomalous anions are present or not.
