Lith. Anst. F Reichhold, München.

=

IV.

PLATE 67.

Actinomyces chromogenes. Gasperini.

I. Gelatin stab culture, six days at 22°.
II. Agar streak culture, six days at 22°.
III. Agar stab culture, six days at 22°.
IV. Agar stab culture, six days at 22°.
V. Gelatin plate, eight days at 22°.

Appearance upon white background.

Stab canal.
Surface growth.
Natural size.

VI. Gelatin plate, eight days at 22°. Natural size. Appearance upon dark background.

VII. Gelatin plate, eight days at 22°. X 60. Part of a superficial colony.

VIII. Agar plate, four days at 22°. X 60. Superficial and deep colony.

IX. Potato culture, three days at 22°. Natural size. X. Microscopic preparation. three days at 22°. X about 1000.

Pure culture in bouillon,

Stained with fuchsin.