A modified medico-social survey of Mati village in the area of the Rural Health Training Centre, Sarojini Nagar, Lucknow was carried out during January to October 1967. A total population of 2,544 persons living in 419 families was investigated. One hundred and eighty-six (7.31 %) persons were found to be symptomatics, 70 (37.6 % of symptomatics) X-ray suspects and 21 (30.0% of X-ray suspects) bacillary cases. The most frequent symptom was cough followed by pain in chest, dyspnoea, fever and haemoptysis. Duration of symptoms was more than one month. The prevalence of X-ray suspects among symptomatics increased with advancing age. Social classes III (lower middle), IV (poor) and V (very poor) suffered increasingly more from the disease. Tendency amongst the patients was to attend the nearest health facility for relief of symptoms. Default was common due to ignorance and lack of proper supervision of patients.