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Streptococcus lanceolatus. Gamaleia. (Diplococcus
pneumoniæ A. Fränkel.) (Pneumococcus.)
IV. Agar stab culture, four days at 37°. Surface growth.
V. Agar plate, three days at 37o. Natural size.
VI. Agar plate, three days at 37°. X 50. Superficial colony. The darker colony lies near the surface.
VII. Agar plate, three days at 37°. X 50. Deep colonies.
VIII. Gelatin plate, eight days at 22°. The upper colony is superficial; the lower ones, deep.
IX. Smear preparation from pneumonic sputum. X 1000.
X. Pure culture from a three days' old agar plate. X 1000.
XI. Microscopic preparations: (a) Diplococci as single pairs and in chains. Highly magnified. (6) Diplococci surrounded by gelatinous capsules.