Churches and public places may become infected with the contagion of tuberculosis, but contagion in such places rarely becomes intense enough to give the disease to anyone. Most people are in places of this kind for too short a time to get an implantation. Nevertheless all public meeting places should be kept clean and free from dust. Carpets should not be used in these places, and the floors should be kept in such condition that they can easily be cleansed. The people who are most exposed to tuberculosis in churches and halls are the janitors and cleaners. By scrubbing the floors instead of sweeping them there would be much less danger of these contracting the disease.