Atropine was indicated whenever signs of œdema were evident. Its action was not always successful, but in certain severe cases we believe that large repeated doses of atropine saved a few lives. One-fiftieth (1/50 gr.) grain hypodermically, repeated every hour for several doses, was usually well borne. We noticed twice in each of two cases after using small doses (1/100 every four hours) a peculiar rapid cyanosis not associated with dyspnœa develop. This reaction remained, however, for only a short time, about 15 to 20 minutes, but it was rather alarming while it lasted. The drug therapy is not very satisfactory in lobar pneumonia, and it is less so in the form of pneumonia which follows influenza. There is practically nothing essentially new in the drug and general treatment of this serious complication over what was shown in 1890, or even in the earlier epidemics, save that our nursing and hygienic measures are undoubtedly better. The addition of an immune serum (anti-pneumococcus serum No. 1) to the treatment of pneumonia is a milestone in the history of the handling of this disease, but we must keep in mind that the pneumonia of the past epidemic was not the usual pneumococcic lobar pneumonia. That the pneumococcus was present in a great many cases is shown in another article of this series, but we also know that the B. influenzæ was present in many, and that it played an active part in the disease is evidenced by the constant low blood count or actual leucopenia. A leucopenia in true lobar pneumonia is most unusual in the United States. The rarity of Type I pneumococcus was noteworthy. We were practically unable to get any anti-pneumococcic serum which was known to be of value at the time of the epidemic, so naturally could not apply this method of treatment as was desired. About half a dozen 50 cc. bottles were in possession of the army medical officers here, but they unfortunately could get no further supply after this was used. We would have liked very much to have combined the anti-pneumococcic serum in Type I cases with the citrated convalescent blood, as was used by us during the epidemic. The anti-pneumococcic chicken serum of Kyes should also be considered. This serum has had but a very localized trial, but from competent observers who have given it to a considerable extent in some of the army camps we are led to believe that it has a very definite value. Major Lawrence Litchfield informed the writer that he had observed excellent results with Kyes chicken serum during the past epidemic in the treatment of pneumonia. This serum was not available for our use. It is to be hoped that further experience with Kyes serum will be favorable, because from the practical standpoint in the treatment of pneumonia it has many commendable features. Again, we desire to point out that the use of anti-pneumococcus sera in influenzal pneumonia may not be a fair test of their true value.