[2]. Bartow, Edward, and Rodgers, J. S. Determination of nitrates by reduction with aluminium: Am. J. Public Hygiene, new ser., Vol. 5, pp. 536–44, 1909; also Illinois Univ. Bull., Vol. 7, No. 2 (Water Survey Ser. No. 7), pp. 14–27, 1909.
[2a]. Blinn, William. Determination of manganese as sulfate and by the sodium bismuthate method: J. Am. Chem. Soc., Vol. 34, pp. 1379–98, 1912.
[2b]. Buswell, A. M. Modified apparatus for the putrescibility test: J. Ind. Eng. Chem., Vol. 6, p. 325, 1914.
[3]. Caldwell, G. C. A method in part for the sanitary examination of water and for the statement of results, offered for general adoption: J. Anal. Chem., Vol. 3, pp. 398–403, 1889.
[4]. Calkins, G. N. A study of odors observed in the drinking waters of Massachusetts: Report Mass. State Board of Health, pp. 355–80, 1892.
[5]. Chamot, E. M., and Pratt, D. S. A study on the phenoldisulfonic acid method for the determination of nitrates in water: J. Am. Chem. Soc., Vol. 31, pp. 922–8, 1909; Vol. 32, pp. 630–7, 1910; and Redfield, H. W., Vol. 33, pp. 366–81, 381–4, 1911.
[6]. Clark, H. W. Experiments upon the purification of sewage and water at the Lawrence Experiment Station: Report Mass. State Board of Health, pp. 427–578, 1896.
[7]. Clark, H. W., and Forbes, F. B. Methods for the determination of lead, tin, zinc, and copper in drinking waters: Report Mass. State Board of Health, pp. 577–85, 1898; pp. 498–506, 1900.
[8]. Cohn, A. I. Tests and reagents, 1st ed., p. 216, John Wiley & Sons, New York, 1903.
[9]. Dibdin, W. J. The purification of sewage and water, 3d ed., pp. 345–51, D. Van Nostrand Co., New York, 1903.