PLATE 43. Bacillus mesentericus. Lehm. and Neum. (B. mesen tericus fuscus Flügge.) Natural size. I. Gelatin stab culture, two days at 22°. II. Agar streak culture, three days at 22°. III. Potato culture, one day at 229. IV. Potato culture, five days at 22°. V. Agar plate, two days at 22°. VI. Agar stab culture, four days at 22°. Surface growth. Natural size. VII. Agar plate, two days at 22°. X 60. Above, superficial; below, deep colonies. VIII. Gelatin plate, thirty-six hours at 22°. X 60. Deep colonies. IX. Gelatin plate, thirty-six hours at 22°. X 60. Superficial colony. X. Gelatin plate, two days at 22°. Natural size. XI. Gelatin plate, one day at 22°. × 60. To the right, deep; to the left, superficial colonies. XII. Microscopic preparation. × 800. culture on agar two days old. Some bacilli contain spores. From a pure Stained with fuchsin. XIII. Bacilli with numerous flagella. X 1000. Stained by Löffler's method. |