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In general the pandemic of influenza was largely similar to that of 1889-90 in its development, first a mild form, later in a severe world-wide epidemic, in the rapidity of its spread and its high case incidence. It has however been notably different in a much higher mortality, especially among young adults. Such evidence as has been gathered confirms the conclusion previously reached that it is transmitted directly and indirectly by contact. It appears probable, however, that the infection was already widely disseminated in this country sometime before a serious epidemic was recognized. Despite the fact that there is still some uncertainty as to the nature of the micro-organism causing pandemic influenza, one thing is certain, that the disease is communicable from person to person. Moreover, judging from experience in other diseases, it is probable that the germs whatever its nature, is carried about not only by those who are ill with influenza, but by persons who may be entirely well. Everything which increases personal contact, therefore, should be regarded as a factor in spreading influenza. Much was heard last winter of face masks. Though the use of suitably constructed masks will reduce the interchange of respiritory germs through inhalation, it must be remembered that there are many other paths by which such germs are transmitted from person to person. Soiled hands, common drinking cups, improperly cleaned eating and drinking utensils in restaurants, soda fountains, etc., roller towels, infected food—these are only a few of the common vehicles of germ transmission. The use of face masks appears to make people neglect these other paths of infection, and so the use of face mask has not been attended with the success predicted for them. If we would be more successful in combating influenza greater attention must be paid to the factors just enumerated. The question of most practical and immediate interest is the probability of recurrence in the near future. Recurrences are charateristic of influenza epidmics and the history of the last pan demic and previous ones would seem to point to the conclusion that this one has not yet run its full course. On the other hand this epidemic has already shown three more or less distinct phases and 14.