PLATE 14.

Bacterium acidi lactici. Hüppe. (Lactic Acid Bacillus.)

I. Gelatin stab culture, five days at 22°. The stab canal in nature is somewhat whiter.

II. Agar streak culture, five days at 22°.

III. Agar stab culture, three days at 22°. Stab canal. IV. Agar stab culture, three days at 22°. Surface growth.

V. Agar plate, three days at 22°.

Natural size.

VI. Agar plate, three days at 22°. × 50. Upper colony superficial, lower colonies deep. Compare also Plate 18,

VII.

VII. Gelatin plate, two days at 22°. Natural size.

VIII. Gelatin plate, two days at 22°. × 50. Upper colony superficial, lower colonies deep. The superficial colonies may vary very much. Compare also Plate 16, VIII, IX; Plate 17, I, II; Plate 19, IV, VII.

IX. Microscopic preparation. Pure culture from an agar colony. X 800.

X. Potato culture, six days at 22°. The air-bubbles on the surface often cover it completely.

PLATE 15.

Bacterium pneumoniæ. Friedländer.
Pneumonia Bacillus.)

(Friedländer's

Stab canal. Surface growth. Natural size.

I. Agar streak culture, four days at 22°. II. Gelatin stab culture, ten days at 22°. III. Agar stab culture, four days at 22°. IV. Agar stab culture, four days at 22°. V. Gelatin plate, three days at 22°. VI. Agar plate, two days at 22°. × 60. The brown whetstone-shaped colony is deep.

VII. Gelatin plate, three days at 22°. X 50. Upper, superficial; lower, deep colony.

VIII. Agar plate, four days at 22°. Natural size. The delicate gray colonies are deep; also the smallest colonies. One colony in the reproduction has turned out yellowish.

IX. Microscopic preparation. Pure culture from an agar plate. X 800. Stained with fuchsin.

X. Microscopic preparation. Smear preparation from sputum. X 800. Stained with fuchsin.

XI. Potato culture, six days.

PLATE 16.

Bacterium typhi. Eberth. Gaffky. (Typhoid Bacillus.)

I. Agar stab culture, three days at 22°. Stab canal. II. Agar stab culture, three days at 22°. Surface growth.

III. Gelatin stab culture, eight days at 22°. Stab canal. IV. Gelatin stab culture, eight days at 22°. Surface growth.

V. Agar streak culture, four days at 22°. Compare also Plate 18, III.

VI. Gelatin streak culture, three days at 22°. Compare also Plate 18, II.

VII. Gelatin plate, thirty-six hours at 22°. Deep colony. Compare also Plate 14, vIII; Plate 19, v.

VIII. Gelatin plate, thirty-six hours at 22°. Superficial colony. Compare also Plate 14, VIII; Plate 19, III.

IX. Gelatin plate, four days at 22°. Compare also Plate 19, IV, VII.

Superficial colony.