PLATE 69.

Leptothrix epidermidis. Biz.

I. Gelatin stab culture, two days at 22°.
II. Agar streak culture, two days at 22°.

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

V. Agar plate, two days at 22°.
VI. Agar plate, two days at 22°.

perficial colony.

VII. Agar plate, two days at 22°. VIII. Gelatin plate, two days at 22°. IX. Gelatin plate, one day at 22°: deep colony.

Natural size.

90. Part of a su

X 90. Deep colony.
Natural size.

X. Potato culture, three days at 22°.

(e) Superficial, (i)

Natural size.

XI. Microscopic preparation. Pure culture on agar, two days at 22°. X 1000. Stained with fuchsin.

XII. Microscopic preparation. Bouillon culture in hanging drop, two days at 22°. X about 1000.