Abstract
In Part I of this communication the theoretical basis for the investigation was outlined. Details of a statistical study were given and it was suggested that these confirmed a greater incidence amongst schizophrenics than normals of subjects excreting an excess of indole substances. In addition the question of hepatic dysfunction was investigated in 48 schizophrenic patients using the Cephalin-Cholesterol Flocculation Test. The results of this investigation were essentially negative.