18│ 4 │ + │ + │ c │ + 19│ 6 │ − │ − │ + │ + 20│ 1 │ − │ + │ + │ + 21│ 2 │ − │ + │ − │ + 22│ 4 │ + │ − │ + │ + 23│ 3 │ c │ − │ − │ + 24│ 2 │ + │ − │ − │ − 25│ 1 │ − │ − │ + │ + 26│ 5 │ − │ − │ + │ + 27│ ? │ − │ + │ − │ + 28│ 1 │ − │ − │ + │ + ───────────┼───────────┼───────────┼───────────┼───────────┼─────────── │ │ 6 │ 14 │ 17 │ 22 ───────────┴───────────┴───────────┴───────────┴───────────┴─────────── c indicates that the plate was contaminated. During the latter part of November and in early December a small secondary wave of influenza occurred at Camp Pike. In a series of 48 consecutive cases, B. influenzæ was readily found in all by means of combined throat cultures and mouse inoculation of the sputum, 33 times (68.7 per cent) in the throat cultures, 39 times (81.3 per cent) in the sputum. These cases were cultured on admission to the receiving ward of the hospital within twenty-four to forty-eight hours after onset and were all early cases of influenza without complications at the time the cultures were made. In 90 more consecutive cases in this series 62 or 68.9 per cent showed B. influenzæ in a single throat culture taken on admission. A summary of all cultures made in cases of uncomplicated influenza is presented in Table III. TABLE III PRESENCE OF B. INFLUENZÆ IN CASES OF INFLUENZA