The results obtained show that pneumococci found in early uncomplicated cases of influenza, both early and late in the course of the epidemic, differ in no respect from those found in the mouths of normal individuals at any time. Similar studies of the prevalence of S. hemolyticus as determined by throat cultures in early cases of influenza are shown in Table VI. The only point of interest in these observations is the increased prevalence of S. hemolyticus in cases examined late in the epidemic of influenza as compared with that found early in the epidemic. The significance of this will be discussed in other parts of this report. TABLE VI S. HEMOLYTICUS IN CASES OF INFLUENZA ══════════════╤══════════════╤═════════════╤═════════════╤═════════════ │ │ S. │ S. │ PER CENT DATE │ NUMBER OF │ HEMOLYTICUS │ HEMOLYTICUS │POSITIVE FOR │CASES CULTURED│ FOUND │ NOT FOUND │ S. │ │ │ │ HEMOLYTICUS ──────────────┼──────────────┼─────────────┼─────────────┼───────────── Sept. 25–26 │ 100│ 6│ 94│ 6 Nov. 27–Dec. 5│ 138│ 39│ 99│ 28.3 ──────────────┴──────────────┴─────────────┴─────────────┴───────────── =Presence of Bacillus Influenzæ in Normal Men.=—For comparison with the results obtained in cases of influenza a fairly extensive study of the prevalence of B. influenzæ in normal individuals has been made at various times prior to and throughout the course of the epidemic. This was deemed of special importance, since it was obvious that the results obtained by previous workers during interepidemic periods would not in all probability coincide with those obtained in the presence of a widespread epidemic of influenza where the opportunity for the dissemination of B. influenzæ was almost unlimited. From the results obtained in the multiple cultures in cases of influenza it is obvious that only like methods can be compared. The results obtained in normal individuals have, therefore, been tabulated in groups dependent upon the culture method employed. These groups have been subdivided according to the time and the place of the study, such explanatory notes as seem necessary being added. (See Tables VII-IX.)