Where the inflammatory œdema was accompanied by much focal hemorrhage the distribution was nodular and suggested the appearance of the hemorrhagic lung of plague pneumonia. It was this appearance which led to the suggestion that the pandemic was not one of influenza but possibly of an infection related to the eastern plague. The nodular masses of hemorrhage at times occupied areas varying from the size of a walnut to that of a golf ball and were localized amidst a relatively mildly involved lung tissue making a sharp contrast between the involved and relatively normal tissue. With the removal of the lung from the body and the partial collapse of the aerated tissues these nodules became still more prominent. The greater the amount of hemorrhage within these areas the more solid became the occupied tissue. Such sporadic distribution of hemorrhagic lesions occurred in the two most intense and rapidly fatal cases. Both of these individuals died within 48 hours of the time of onset of the lung conditions. In these two cases we do not believe that the pulmonary lesions had been prolonged over a time even as long as 36 hours but with the difficulty of estimating the onset of the lung involvement we are giving a liberal estimate of this time. Besides meeting with the stages of congestion, œdema and hemorrhage during the earliest days of the pulmonary lesions we have found that they are to be encountered virtually through all the stages of the fatal cases either as remnants of the original reactions which had not been entirely obliterated by the succeeding purulent process or as was so commonly found, new reactions occurred in other regions of the lung so that, in the same individual, inflammatory reactions of different stages of development could be defined. I do not recollect a single autopsy of a case dying during the acute period which did not show evidence of some areas in the stages of this early acute reaction. Naturally where resolution is well advanced within the lung all trace of inflammatory exudate of various kinds is removed and where such individuals with their resolved pneumonia are brought to death through succeeding complications the above finding will not be borne out. We limit, however, our statement to the findings in the acute deaths.