Page images
PDF
EPUB
[graphic][graphic][graphic][graphic][subsumed][merged small][subsumed][merged small][graphic][graphic][merged small][graphic][subsumed][merged small]

Bacterium syncyaneum (Ehrenb.). Lehm. and Neum.

(Bac. cyanogenes Flügge; Blue Milk.) I-III. Gelatin stab cultures, from six to ten days at 22°. There occur still other shades of color.

IV. Agar stab culture, ten days at 37°.
V. Bouillon culture, four days at 37°.

VI. Milk culture, three days at 37o. Inoculated upon unsterilized milk.

VII. Microscopic preparation. Pure culture from agar plate. X 800.

VIII. Microscopic preparation. Pure culture. Flagella staining with Löffler's mordant. X 800.

IX. Bacteria with flagella, one or more at one pole. X 1000. Stained according to Löffler.

IX.

PLATE 28. Bacterium syncyaneum (Ehrenb.). Lehm. and Neum.

(Bac. cyanogenes Flügge; Blue Milk.) I-III. Potato cultures, from three to ten days at 22o. Many varieties of potato inoculated with the same culture. The differences in colors may be still more numerous.

IV. Agar plate, three days at 22°. Natural size.

V. Agar plate, three days at 22°. X 60. To the right, deep; to the left, superficial colonies.

VI. Gelatin plate, three days at 22°. Natural size.

VII. Gelatin plate, eight days at 22° Natural size. Appearance of colonies upon a white background.

VIII. Gelatin plate, three days at 22°. X 60. Above, superficial; below, deep colonies.

[ocr errors]
[graphic][graphic][merged small][merged small][graphic][graphic][subsumed][subsumed][merged small][graphic][merged small][graphic][merged small][ocr errors][graphic][ocr errors]
« PreviousContinue »