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PLATE IV.
Fig. A.
Colonies of Streptococci in gelatine and agar plate cultures.—Under a low power of the
microscope (Leitz, 3 objective, 1 ocular.)
(Diagrammatic.)
(a) Streptococcus I. COLONY IN AGAR PLATE.
(b) „ II. Colony in agar plate.
(c) „ II. Colonies in old gelatine culture.
(d) „ III. Colony in agar plate.
(e) „ X. Colonies in agar plate.
(/) „ XI. Colonies in gelatine plate.
(7) „ XII. Colony in gelatine plate.
(h) „ XIII. Colony in agar plate.
(i) „ XIII. Colonies in gelatine plate.
(j) „ XIV. Colony in gelatine plate.
(k) „ XVIII. Colony in gelatine plate.
Fig. B.
Broth and gelatine (incubated at blood heat) cultures of streptococci.
(Diagrammatic.)
(а) Streptococcus I. Gelatine culture incubated at 37° C. for 2 days.
(b) „ I. Old broth culture (shaken up).
(c) „ II. Gelatine culture incubated at 37° C. for 2 days.
(d) „ II. Broth culture (shaken).
(e) „ IV. Gelatine culture, 24 hours at 37° C.
(f) „ XVII. Broth culture, 2nd day at 37° C.