Most of us know what uphill work it is to live hygienically in an unhygienic environment. I remember how hard it was to eat happily when sitting beside a college professor who took brown pills before each meal, yellow pills between each course, and a dose of black medicine after the meal was over. Mariano, an Italian lad cured of bone tuberculosis by out-of-door salt air at Sea Breeze, returned to his tenement home an ardent apostle of fresh air day and night, winter and summer. His family allowed him to open the window before going to bed, but closed it as soon as he was asleep. Lawrence Veiller, our greatest expert on tenement conditions, says: "To bathe in a tenement where a family of six occupy three rooms often involves the sacrifice of privacy and decency, which are quite as important to social betterment as cleanliness." To live unhygienically where others live hygienically is quite as difficult. Witness the speedy improvement of dissipated men when boarding with country friends who eat rationally and retire early. It must have been knowledge of this fact that prompted the tramways of Belfast to post conspicuous notices: "Spitting is a vile and filthy habit, and those who practice it subject themselves to the disgust and loathing of their fellow-passengers." It is almost impossible to have indigestion, blues, and headache when one is camping, particularly where action and enjoyment fill the day. Our practical question is, therefore, not "What shall I eat, how many hours shall I sleep, what shall I wear," but "How can I manage to get into an environment among living and working conditions where the people I live with and want to please, those who influence me and are influenced by me, make healthy living easy and natural?"