Staphylococci 1 B. influenzæ, pneumococci 1 B. influenzæ, S. hemolyticus 2 B. influenzæ, pneumococci, staphylococci 1 B. influenzæ, S. hemolyticus, staphylococci 4 No organism found 1 The high incidence of B. influenzæ and the frequent association of B. influenzæ and hemolytic streptococci are noteworthy. The instance in which no organisms were found is probably due to a defect in media and should perhaps be excluded from the list. The percentage incidence of pneumococci, hemolytic streptococci, staphylococci and B. influenzæ in the bronchus, lungs and blood of the heart is an index of the facility with which these microorganisms penetrate internal organs when the bronchi are the site of this hemorrhagic lesion. TABLE XLI ════════╤════════╤═════════════════╤═════════════════ │ NO. OF │ │ HEMOLYTIC │CULTURES│ PNEUMOCOCCI │ STREPTOCOCCI ────────┼────────┼────────┬────────┼────────┬──────── │ │ NO. │PER CENT│ NO. │PER CENT │ │POSITIVE│POSITIVE│POSITIVE│POSITIVE ────────┼────────┼────────┼────────┼────────┼──────── Bronchus│ 10│ 2│ 20.0│ 6│ 60.0 Lung │ 13│ 4│ 30.8│ 7│ 53.8 Blood │ 17│ 4│ 23.5│ 9│ 52.9 ────────┴────────┴────────┴────────┴────────┴──────── ════════╤═════════════════╤═════════════════ │ │ │ STAPHYLOCOCCI │ B. INFLUENZÆ ────────┼────────┬────────┼────────┬──────── │ NO. │PER CENT│ NO. │PER CENT │POSITIVE│POSITIVE│POSITIVE│POSITIVE ────────┼────────┼────────┼────────┼──────── Bronchus│ 6│ 60.0│ 8│ 80.0 Lung │ 3│ 23.1│ 5│ 38.5 Blood │ │ │ │ ────────┴────────┴────────┴────────┴──────── When these figures are compared with those for all forms of bronchitis no very noteworthy differences are found; the incidence of pneumococci here is less and that of hemolytic streptococci greater. In association with the severe changes present in the bronchi, hemolytic streptococci which enter the lungs almost invariably find their way into the blood.