SUMMARY: An organism capable of growing at pH values up to 11·0 appeared, presumably as a contaminant, in the course of ‘training’ experiments designed to produce alkali-resistant strains of Frankland & Frankland; this organism has now been characterized as Jordan. Of 26 other strains of studied, none grew at pH 10·7. The alkali-resistant strain showed little loss of resistance after many transfers on neutral medium. When it grew in alkaline media it lowered the pH value of these media.


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  1. Bradley D. E., Franklin J. G. 1958; Electron microscope survey of the surface configuration of spores of the genus Bacillus . J. Bact 76:618
    [Google Scholar]
  2. Bradley D. E., Williams D. J. 1957; An electron microscope study of the spores of some species of the genus Bacillus using carbon replicas. J. gen. Microbiol 17:75
    [Google Scholar]
  3. Knight B. C. J. G., Proom H. 1950; A comparative study of the nutrition and physiology of mesophilic species in the genus Bacillus . J. gen. Microbiol 4:508
    [Google Scholar]
  4. Kushner D. J., Lisson T. A. 1959; Alkali resistance in a strain of Bacillus cereus pathogenic for the larch sawfly Pristiphora erichsonii . J. gen. Microbiol 21:96
    [Google Scholar]
  5. Smith N. R., Gordon R. E., Clark F. E. 1952; Aerobic spore-forming bacteria. Monogr. U.S. Dep. Agric. 16
    [Google Scholar]

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