Full text not available. This article's full text was not recovered in the archive. The citation and links above point to the published record. Related research Occurrence of the M Substance of Type 28 Group A in Streptococci of Lancefield Groups B, G and G Journal of General Microbiology · 1949 The Production of Penicillin in Surface Culture, using Chemically Defined Media Journal of General Microbiology · 1949 Some Biological Properties of Trichothecin, an Antifungal Substance from Trichothecium roseum Link Journal of General Microbiology · 1949 Outline Classification of Bacterium and Staphylococcus Journal of General Microbiology · 1949 The Drying and Preservation of Bacterial Cultures Journal of General Microbiology · 1949 ← Previous article in this issueOutline Classification of Bacterium and Staphylococcus