RT Journal T1 THe classification of bacteria JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1909 FD January 23 VO LII IS 4 SP 301 OP 302 DO 10.1001/jama.1909.02540300041006 UL http://dx.doi.org/10.1001/jama.1909.02540300041006 AB It is one of the most remarkable lapses in modern biologic science that the classification of the bacteria has been left so long in uncertainty and confusion. The circumstance is hardly creditable to workers in this field. There are many groups of living organisms in which nomenclature and classificatory arrangement, whatever may be their biologic importance, have little or no influence on the course of investigation or on matters of direct practical concern. But just the reverse is true of bacterial classification. The difficulties that surround the sure identification of a newly found micro-organism are familiar to everyone who has had occasion to consult the meager descriptions and unhelpful systematic arrangements now available for the student. Chester's well-known compilation, although based on a reasonable principle, has not proved so useful as was hoped, because of its numerous technical inaccuracies. The practical importance of determining group limitations and variations has presented