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Lithirst f Reichhol, Vunchen

Micrococcus tetragenus. Koch. Gaffky.
I. Agar streak culture, five days at 37°.

II. Gelatin stab culture, ten days at 22°. Stab canal. Characteristic nail-head form.

III. Gelatin stab culture, ten days at 22° ; surface growth. In the reproduction the color has turned out brown, but should be white.

IV. Agar stab culture, six days at 37°. Surface growth.

V. Agar stab culture, six days at 37°. The growth along the stab is not always so luxuriant.

VI. Agar plate, five days at 37o. Natural size.

VII. Gelatin plate, eight days at 22o. The colonies are naturally pure white. Natural size.

VIII. Gelatin plate, eight days at 22° X 60. The larger colony is superficial; the smaller, deep.

IX. Microscopic preparation. From a two-days’-old agar culture. X 800. There are not always found tetrads alone, often also single cocci.

X. Potato culture, seven days at 37o.

XI. Microscopic picture. Tetrads before, during, and after division; highly magnified.

Micrococcus pyogenes a aureus. (Rosenbach.) Lehm.

and Neum. (Staphylococcus aureus Ros.) I. Gelatin stab culture, six days at 22o. II. Agar streak culture, five days at 22o. III. Agar stab culture, five days at 22°. Stab canal. IV. Agar stab culture, five days at 22°; surface growth.

V. Agar plate culture, six days at 22°, natural size. Superficial and deep colonies.

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

VII. Gelatin plate, four days at 22°, natural size. Superficial and deep colonies.

VIII. Gelatin plate, four days at 22o. X 60. Superficial and deep colonies.

IX. Potato culture, six days at 22o.

X. Microscopic preparation. X 1000. From an agar culture, two days old, at 22o.

XI. Microscopic preparation. Single cocci, before, during, and after division. X 1500.

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