PLATE 31.

Bacterium vulgare (Hauser). Lehm. and Neum. (Proteus vulgaris Hauser.)

I. Gelatin stab culture, twenty-four hours at 22°.
II. Agar streak culture, thirty-six hours at 22°.
III. Agar plate, thirty-six hours at 22°.
IV. Agar plate, four days at 22°. X 60.
ficial; below, deep colonies.

size.

Natural size. Above, super

V. Gelatin plate, thirty-six hours at 22°. Natural

VI. Gelatin plate, thirty-six hours at 22°. X 60. To the right, superficial; to the left, deep colonies. The lower, approaching the surface, begins to liquefy.

VII. Gelatin plate, three days at 22°. X 60. Deep colony. Zooglea form, similar to the Bact. Zopfii.

VIII. Microscopic preparation. Pure culture upon agar. X 800. Stained with fuchsin.

IX. Bacteria with very numerous flagella.

X 1000.

IX.

PLATE 32.

Bacterium vulgare & mirabilis (Hauser). L. and N.

(Proteus mirabilis Hauser.)

I. Agar stab culture, two days at 22°.
II. Agar stab culture, two days at 22°.
III. Gelatin stab culture, six days at 22°.
IV. Agar streak culture, two days at 22°.
V. Agar plate, seven days at 22°.
VI. Agar plate, seven days at 22°.
perficial; below, deep colony.

nies.

VII. Gelatin plate, two days at 22°.

VIII. Gelatin plate, two days at 22°. colony.

IX. Potato culture, eight days at 22°.

Stab canal. Surface growth.

Natural size.

X 60. Above, su

X 60. Deep colo

60. Superficial

Natural size.

X. Microscopic preparation. Pure culture on agar two days old. X 800.