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June 16, 1923

Investigations into the Occurrence and Classification of the Haemoglobinophilic Bacteria.

JAMA. 1923;80(24):1794. doi:10.1001/jama.1923.02640510050038

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This monograph contains an excellent historical review of work on the hemoglobinophilic bacteria, and a detailed account of the author's investigations of these organisms. There is an extensive bibliography. In the section on comparison of the Pfeiffer bacillus with other hemoglobinophilic bacteria, the author has missed the important differential character of nitrate production, discovered by Jordan and confirmed by Stillman and Bourne. River's work, pointing to the occurrence of a definite variety in meningitis, is also overlooked. On the whole, however, the review contains a very fair and complete statement of our knowledge of the Pfeiffer bacillus and related organisms at the present time. The author concludes, from his own work, that there are some strains that must be classed as Pfeiffer bacilli, although the satellite phenomenon is poorly developed, or completely absent. In accordance with the work of several observers in this country, identical agglutinative varieties were rarely found

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