A tuberculous subject should always put every particle of broken down tissue into a receptacle immediately when it is given off. If he expectorates he should hold a paper sputum cup close to his mouth so that he does not distribute any of the matter over his clothing; after expectorating he should carefully wipe his mouth with a paper napkin, fold up the paper napkin and put it in a paper bag. When he has an accumulation of these things he should burn them. He should always keep his hands and lips clean and be careful to wash his hands and cleanse his lips before eating. If by any chance he spills any broken down tissue on his bed clothes or on the floor he should immediately clean the matter up. If the clothes are of a character that they can be boiled they should be boiled at once. Absolute cleanliness is the safest protection against the spread of tuberculosis.