PLATE 41. Bacillus megatherium. De Bary. I. Gelatin stab culture, twenty-four hours at 22°. III. Gelatin plate, thirty-six hours at 22°. Natural size. IV. Gelatin plate, thirty-six hours at 22°. X 60. Deep colony. V. Gelatin plate, thirty-six hours at 22°. X 60. Superficial colony. VI. Agar plate, four days at 22°. VII. Agar plate, one day at 22°. superficial; to the left, deep colonies. Natural size. 60. To the right, VIII. Agar plate, four days at 22°. × 60. To the right, deep; to the left, superficial colonies. IX. Potato culture, five days at 22°. Natural size. X. Microscopic preparation. Pure culture on agar. X 800. XI. Bacilli with numerous flagella. × 1000. Stained according to Löffler. XI. PLATE 42. Bacillus vulgatus. Migula. (B. mesentericus vulgatus Flügge. Potato Bacillus.) I. Gelatin stab culture, ten days at 22°. II. Agar streak culture, ten days at 22°. III. Agar stab culture, six days at 22°. Surface growth. V. Agar plate, six days at 22°. VI. Agar plate, six days at 22°. colony. X 60. Deep colonies. VII. Gelatin plate, eight days at 22°. VIII. Gelatin plate, eight days at 22°. superficial colony. IX. Gelatin plate, eight days at 22°. superficial colony. Natural size. X 60. Part of a X 150. Part of a X. Potato culture, five days at 22°. Natural size. one day old. X 800. Stained with fuchsin. XII. Bacilli with numerous flagella. × 1000. Stained according to Löffler. |