PLATE 15.

Bacterium pneumoniæ. Friedländer. (Friedländer's

Pneumonia Bacillus.)

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°.

superficial; lower, deep colony.

Stab canal. Surface growth. Natural size.

X 50. Upper,

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. 800. Stained with fuchsin. X

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, vi; Plate 19, I.

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

Superficial colony.