The colonial government of southern Nigeria began to use asylums to confine the allegedly insane in 1906. These asylums were administered by the British but confined Africans. Yet, as even many in the government recognized, insanity is a condition that shows cultural variation. Who decided the inmates were insane and how? This sophisticated historical study pursues these questions as it examines fascinating source material--writings by African patients in these institutions and the reports of officials, doctors, and others--to discuss the meaning of madness in Nigeria, the development of...