The authors summarises a conspective view of all those measures against tuberculosis which public authorities and the governing bodies of hospitals, dispensaries, and friendly societies may be able to adopt. The following schemes, which to a certain extent overlap, show the main official measures and the operations of hospitals and dispensaries in the prevention of phthisis. In each scheme the authors placed the medical officer of health as the agent for originating and co-ordinating preventive measures. The second scheme indicates from the point of view of the individual patient as well as of the public health what is practicable under present conditions. The preceding schemes display the imperfections of present official measures and the reforms which are indicated. Thus there are insufficient encouragements to early treatment of this most curable disease. Sanatorium accommodation for early cases among wage-earners is very deficient.