4. Pneumonia with measles was a frequent and unusually fatal type of the disease. The most important causes of pneumonia during the history of the camp were influenza and measles. Evidence is not lacking that influenza occurred in epidemic form in other widely separated camps in the United States during the spring of 1918. Vaughan and Palmer[4] state that a disease strongly resembling influenza became prevalent in the Oglethorpe camps about March 18, 1918, and continued three weeks; during this time the number sent to hospital or to quarters with this disease was 1,468 in a total strength of 28,586. Pneumonia does not appear to have followed this epidemic. Miller and Lusk[5] found the ordinary type of pneumonia prevalent at Camp Dodge, Iowa, until March 18 to 20, 1918, when abruptly the streptococcus type predominated and there was a great increase in the rate of mortality. A mild tracheitis, they state, was widespread in the camp during March. In March, 1918, one member of our commission saw an outbreak of influenza at Fort Sam Houston which was identical in its clinical characters with the disease which appeared as a pandemic in the fall of 1918. The report of the Surgeon General[6] for 1919 shows that there was a sharp increase of the incidence of influenza in the army during March, reaching a maximum in April. The rate of influenza for 1,000 troops fell to its original level through May and June and finally rose to a great height in September and October. Influenza in epidemic form made its appearance in the army camps of the United States during March, 1918. The symptomatology of the disease associated with its peculiar epidemiology as seen at Camp Funston make its recognition unquestionable. The disease had doubtless been present in this camp since its establishment in September, 1917, but did not assume epidemic proportions until the spring of 1919. Pneumonia followed the epidemics of influenza which occurred in the spring of 1918 and exhibited characters similar to those of the pneumonias which followed the pandemic of September and October, 1918. In both instances the height of the outbreak of pneumonia has been one week after the maximum incidence of influenza. Influenza became epidemic in Spain about the middle of May and in other countries received the name “Spanish influenza” which is not more applicable than the designation “Russian influenza” often applied to the disease during the pandemic of 1889–90.