Standard Methods and New Procedures for the Isolation of Colon Bacilli from Water

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Abstract
A discussion of the fundamental principles underlying the practical use of the colon test in the examination of water supplies and with a plea for fundamental reex-amination of the whole problem. The author considers that several of the "presumptive tests" recently suggested involving the inhibitive action of dye media present real promise of a practical procedure which would answer all sanitary requirements with a material saving of time and labor as compared with the present standard methods. A cooperative study for the solution of this problem is urged.