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Bacterium Zopfii. Kurth.
I. Gelatin stab culture, six days at 22o.

II. Agar streak culture, thirty-six hours at 37°. It is actually a grayish color and transparent.

III. Agar stab culture, six days at 22°. Stab.
IV. Agar stab culture, six days at 22°. Surface growth.

V. Gelatin plate, seven days at 22o. Natural size.

VI. Gelatin plate, thirty-six hours at 22°. Natural size.

VII. Gelatin plate, twenty-four hours at 22°. X 90. Thread-like portion of the deep colony.

VIII. Gelatin plate, twenty-four hours at 22o. X 60. Superficial colony. Compare Plate 31, vir; Plate 32, VIII.

Bacterium Zopfii. Kurth. I. Gelatin plate, eight days at 22o. X 90. Peripheral portion of a colony.

II. Microscopic preparation. X 1000. Pure culture, from agar plate, stained with fuchsin.

III, Agar plate, four days at 22° Deep colony.

IV. Agar plate, twenty-four hours at 37o. Natural size.

V. Agar plate, twelve hours at 37°. Deep and superficial colony.

VI. Agar plate, twenty-four hours at 37° X 60. Superficial colony, surrounded by innumerable bacteria swarming outward.

VII. Gelatin plate, eight days at 22°. Sausage-shaped forms of the deep colony.

IX. Bacteria with numerous flagella. X 1000. Stained according to Löffler.

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Luth. Arst t Reichholil, Munchen

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