incident of a student who spent a few hours visiting his sister in a part of the country where there had been no influenza. He appeared well at the time, but six hours after his return to school he developed influenza. Two days after the contact the sister came down with the disease. On the other hand, he told of a student who did not contract the disease, though he slept for two nights in the same bed with his roommate, who had returned to school with a well-developed case of influenza. The unsuccessful attempts to transmit influenza in the experiments of Rosenau (37), McCoy (37a) and others already cited would indicate that the cases from whom the material was taken were no longer infectious, although some of them had been showing symptoms for only about 12 hours. Bloomfield observed that the general use of face masks in the wards did not alter the course of the epidemic, and stated that if face masks are protective, infection from early unisolated cases must be assumed. Provided influenza is generally transmitted during the period of incubation, a theory which seems consistent with the facts, rigid quarantine for epidemic influenza is impracticable and probably useless. _Partial Isolation by Means of the Cubicle System_ The so-called cubicle system consists in the dividing of rooms, or more particularly of wards, into small compartments by means of suspending sheets from wires so that each bed is separated from its neighbor. Capps (39) reported favorably on the method as used at Camp Grant, where sheets or halves of tents were suspended from wires or from the mosquito netting frames which were a part of the standard beds. Doctors, nurses and attendants were forced to wear masks in the wards, and patients were not allowed out of the cubicles without them. In discussing this paper Thayer emphasized the value of screening, masking and the wearing of gowns, and also recommended thorough washing of the hands between the examination of each two patients; and Emerson called attention to the fact that the first demonstration of the cubicle system as an adequate means of preventing acute respiratory diseases was made at the Pasteur Institute of Paris, where it had been in operation for 10 years. The latter stated that the system had been used in various hospitals in America and was essential for the care of diphtheria, measles and scarlet fever. He further indicated that if the technique of personal cleanliness of nurses, doctors and attendants could be perfected, it was probable that the height of the cubicle partition could be reduced to that of a “red string.” The method certainly seems worthy of consideration and trial, particularly in large general hospitals and public institutions. _The Use of the Face Mask_