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Bacterium vulgare (Hauser). Lehm. and Neum. (Pro

teus vulgaris Hauser.)
I. Gelatin stab culture, twenty-four hours at 22o.
II. Agar streak culture, thirty-six hours at 22°.
III. Agar plate, thirty-six hours at 22o. Natural size.

IV. Agar plate, four days at 22° X 60. Above, superficial; below, deep colonies.

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

VI. Gelatin plate, thirty-six hours at 22o. 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 22o. 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.

G

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

(Proteus mirabilis Hauser.)
I. Agar stab culture, two days at 22°. Stab canal.
II. Agar stab culture, two days at 22°. Surface growth.
III. Gelatin stab culture, six days at 22°.
IV. Agar streak culture, two days at 22o.

V. Agar plate, seven days at 22°. Natural size.

VI. Agar plate, seven days at 22o. X 60. Above, superficial; below, deep colony.

VII. Gelatin plate, two days at 22°. X 60. Deep. colonies.

VIII. Gelatin plate, two days at 22°. X 60. Superficial colony.

EX. Potato-culture; dight days at 22°. Natural size.

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

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