First and foremost, the mingling of people in even fairly large groups should be minimized. Pleasant as it is to renew social relations with our friends, all gatherings of an unnecessary nature should be cut down to a very few. And in this connection, it may be mentioned that it is nothing short of a crime for a person who feels even slightly indisposed to accept an invitation and thrust his company upon persons who may suffer serious consequences from the association. There could be nothing more selfish than for persons with headache and other symptoms of influenza to refuse to exercise the small amount of self-restraint which will keep them at home with their own symptoms. In the second place, it is the duty of every citizen to see that his system is in good condition, that he lives upon a diet calculated to build up resistance to germs; and that he does not overwork, or overplay. Fatigue and the consequent reduction in vitality have had a very dangerous part in the fatalities recorded in this epidemic. Preserving with scrupulous care both internal and external cleanliness, sleeping in well ventilated rooms or on porches, and taking daily adequate exercise in the open air are some of the practices which have become a duty to ourselves and our neighbors, we are proud to say that the mystery of the mystery is not yet solved. 