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Bacillus megatherium. De Bary.
I. Gelatin stab culture, twenty-four hours at 22°.
II. Agar streak culture, three days at 22°.

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

IV. Gelatin plate, thirty-six hours at 22°. X 60. Deep colony.

V. Gelatin plate, thirty-six hours at 22°. X 60. Superficial colony.

VI. Agar plate, four days at 22o. Natural size.

VII. Agar plate, one day at 22°. X 60. To the right, superficial; to the left, deep colonies.

VIII. Agar plate, four days at 22o. X 60. To the right, deep; to the left, superficial colonies.

IX. Potato culture, five days at 22o. Natural size.

X. Microscopic preparation. Pure culture on agar. x 800.

XI. Bacilli with numerous flagella. X 1000. Stained according to Löffler.

Bacillus vulgatus. Migula. (B. mesentericus vulgatus

Flügge. Potato Bacillus.)
I. Gelatin stab culture, ten days at 22°.
II. Agar streak culture, ten days at 22o.
III. Agar stab culture, six days at 22°. Surface growth.
IV. Agar plate, six days at 22o. Natural size.

V. Agar plate, six days at 22o. X 60. Deep colonies.

VI. Agar plate, six days at 22° X 60. Superficial colony.

VII. Gelatin plate, eight days at 22° Natural size. VIII. Gelatin plate, eight days at 22o. x 60. Part of a superficial colony.

IX. Gelatin plate, eight days at 22°. x 150. Part of a superficial colony.

X. Potato culture, five days at 22o. Natural size.

XI. Microscopic preparation. Pure culture from agar, one day old. X 800. Stained with fuchsin.

XII. Bacilli with numerous flagella. X 1000. Stained according to Löffler.

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