The Bangalore district tuberculosis programme (the programme assessed). The Bangalore District has an area of 7798 square kilometers and had a population of about million according to the census of 1961 (excluding the metropolitan area). The District has 13 towns and 2477 villages. The DTP was implemented in 1963, not by the staff of the DTC (as happens in other districts) but by trainees of two courses held in 1963 at the National Tuberculosis Institute (NTI) Bangalore. In all, 15 microscopy centres were organised in general health institutions of the District. Since, at that time, a mobile X-ray unit was also made to visit 6 centres, these centres were excluded from the study. Of.