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Published online by Cambridge University Press: 15 May 2009
By means of a method introduced by one of us (Wilson, 1907), a bacillus closely resembling B. faecalis alkaligenes was recently isolated from Belfast tap water. This bacillus, for the purposes of this paper, will be spoken of as B. Grosvenor, it having been attained from a house in Grosvenor Road. We find that emulsions of this bacillus are agglutinated, often in high dilutions, by the blood serum from practically every case of the cerebro-spinal meningitis at present existing in epidemic form in Belfast.