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 37°. Inoculated upon unsterilized milk. VII. Microscopic preparation. Pure culture from agar plate. × 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. PLATE 28. Bacterium syncyaneum (Ehrenb.). Lehm. and Neum. (Bac. cyanogenes Flügge; Blue Milk.) I-III. Potato cultures, from three to ten days at 22°. 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°. × 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°. × 60. Above, |