Standard methods for the examination of water and sewage

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

[223]. Rogers, L. A., Clark, W. M. and Evans, A. C. The Characteristics of Bacteria of the Colon Type Found in Bovine Feces. Jour. of Inf. Diseases, 15, 1914, 99.

[224]. Rogers, L. A., Clark, W. M. and Evans, A. C. The Characteristics of Bacteria of the Colon Type Occurring on Grains. Jour. of Inf. Diseases, 17, 1915, 137.

[225]. Smith, H. M. The Seaweed Industries of Japan. Bulletin of the Bureau of Fisheries, 24, 1904, 135.

[226]. Sörensen, S. P. L. Enzymstudien. Biochem. Ztschr., 21, 1909, 131 and 201.

[227]. Whipple, G. C. On the Necessity of Cultivating Water Bacteria in an Atmosphere Saturated with Moisture. Tech. Quart., 12, 1899, 276.

[228]. Whittaker, H. A. The Source, Manufacture and Composition of Commercial Agar-agar. Jour. Amer. Pub. Health Assoc., n. s. 1, 1911, 632.

[229]. Clark, W. M. and Lubs, H. A. The colorimetric determination of the hydrogen-ion concentration of bacteriological culture media. Jour. Wash. Acad. Sciences, 6, 1916, 483.

[230]. Clark, W. M. and Lubs, H. A. The colorimetric determination of hydrogen-ion concentration and its application in bacteriology. Jour. of Bact., 2, 1919, 1 and 109.

[231]. Cohen, B. and Clark, W. M. The growth of certain bacteria in media of different hydrogen-ion concentrations. Jour. of Bact., 4, 1919, 409.

[232]. Fennel, E. A. and Fisher, M. A. Adjustment of culture medium reactions. Jour. of Inf. Diseases, 25, 1919, 444.