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The article presents a study of homicide between 1963 and 1966 in western Nigeria which found that 57 percent who were interviewed were mentally ill. The diagnostic categories are schizophrenia with the paranoid type predominating, schizo-affective, depression, acute distress and depression, psychomotor epilepsy, and three of undermined diagnosis. There was no appreciable difference found between the psychiatric cases and the others in their circumstances and in the execution of their crime. There appears to be a positive correlation between homicide and suicide geographically.

The article describes six cases of tropical neuropathy with psychosis. They have recognized psychiatric disorder triggered by frank nutritional deficiency, and observed that it is quite possible for psychiatrics symptoms to be unleashed by nicotinic acid deficiency in the absence of physical signs of pellagra. The similarity between the psychosis associated with tropical neuropathy and puerperal psychosis goes beyond the mixture of organic and functional symptoms. Information about the reason for the clearing up of the psychosis and residual neurological signs of tropical neuropathy is also discussed.

An abstract entitled "The Nyctohemeral Rhythm of Plasma Cortisol in Mental Illness in Nigerians by B. Kwaku Adadevoh and Tolani Asuni is presented. This focuses on the assessment study to clarify conflicting data on adrenocortical function in mental illness, as well as replicate results with plasma cortisol measurements. Findings of the study are posted highlighting that the failures to replicate results was due to differences resulting from adjustments arising in chronic mental illnesses.