The influence of physiologically active compounds and their inactive homologs on phase boundary potentials

Employing a “model cell,” as described by Beutner, the change produced in electromotive force by propadrine and three homologs and by choline and two homologs was determined. The results show that it is not yet possible to correlate change in E. M. F. with physiological activity in homologous series; there is an approximate parallelism between effect on E. M. F. and relative toxicity.