Standard methods for the examination of water and sewage

by American Public Health Association. Laboratory Section; American Chemical Society; Association of Official Agricultural Chemists

[213]. Itano, A. The Relation of Hydrogen Ion Concentration of Media to the Proteolytic Activity of Bacillus Subtilis. Bulletin 167, 1916, Mass. Agric. Ex. Station.

[214]. Kendall, A. I. and Walker, A. W. The Isolation of Bacillus Dysenteriae from Stools. Jour. Med. Research, 23, 1910, 481.

[215]. Kinyoun, J. J. and Deiter, L. V. On the Preparation of Endo’s Medium. Amer. Jour. Public Health, n. s. 2, 1912, 979.

[216]. Levine, M. On the Significance of the Voges-Proskauer Reaction. Jour. of Bacteriology, 1, 1916, 153.

[217]. Lubs, H. A. and Clark, W. M. On Some New Indicators for the Colorimetric Determination of Hydrogen-ion Concentration. Jour. Wash. Acad. of Sciences, 5, 1915, 609.

[218]. McClendon, J. F. New Hydrogen Electrodes and Rapid Methods of Determining Hydrogen Ion Concentrations. Amer. Jour. of Physiology, 38, 1915, 180.

[219]. McClendon, J. F. A Direct Reading Potentiometer for Measuring Hydrogen Ion Concentrations. Amer. Jour. of Physiology, 38, 1915, 186.

[220]. McCrady, M. H. The Numerical Interpretation of Fermentation-tube Results. Jour. Inf. Diseases, 17, 1915, 183.

[221]. Noyes, H. A. Agar Agar for Bacteriological Use. Science, n. s. 44, 1916, 797.

[222]. Rogers, L. A., Clark, W. M. and Davis, B. J. The Colon Group of Bacteria. Jour. of Inf. Diseases, 14, 1914, 411.