PLATE 25.

Bacterium fluorescens. Lehm. and Neum. (Bacillus fluorescens liquefaciens. Flügge.)

I. Gelatin stab culture, two days at 22°.
II. Gelatin stab culture, eight days at 22°.
III. Agar streak culture, three days at 22°.
IV. Agar stab culture, four days at 22°.
V. Gelatin plate, two days at 22°. X 90.
superficial colony.

Part of a

VI. Agar plate, twenty-four hours at 22°. X 60. (e) Superficial, (i) deep colonies.

VII. Gelatin plate, three days at 22°. Natural size. VIII. Microscopic preparation. Pure culture from agar plate.

800.

IX. Potato culture, four days at 22°. Natural size. Compare also Plate 18, Ix; Plate 26, v.

X. Bacteria with flagella, usually one, more rarely two or more. × 1000. Stained according to Löffler.

X.

PLATE 26.

Bacterium putidum (Flügge). Lehm. and Neum. Bacterium fluorescens putidum Flügge. (Bacterium

fluorescens non-liquefaciens Autor.)

I. Gelatin stab culture, three days at 22°.

II. Gelatin plate, twenty-four hours at 22°. × 90. Superficial colony. Compare Plate 14, VIII; Plate 19, III. III. Gelatin plate, twenty-four hours at 22°. X 90. Deep colony.

IV. Gelatin plate, four days at 22°. Natural size. Appearance of colonies upon a dark background.

V. Potato culture, four days at 22°. Natural size. Compare also Plate 18, IX.

VI. Microscopic preparation. Pure culture from gelatin plate. 800. Upon agar, threads are usually produced.

VII. Agar plate, eight days at 22°. Natural size. Appearance of the colonies upon a white background. VIII. Agar plate, three days at 22°. 60. (e) Superficial, (i) deep colonies.

IX. Bacteria with one, more rarely two flagella. 1000. Stained according to Löffler.