A field survey was conducted in two villages – Gambhirgachi and Paharpur – in 1972. The survey was repeated after 10 years in the former village and after 15 years in the latter one. The second survey showed very little change in the rate of total mental morbidity. The rate of prevalence of hysteria declined significantly in both villages. In Gambhirgachi the rate of hysteria dropped from 16.9 to 4.6 per 1000 in 10 years, and in Paharpur it dropped from 32.3 to 2.05 per 1000 in 15 years.