Sewerage and Sewage Treatment

by Harold E. Babbitt

[125]. Standard Methods of Water Analysis, American Public Health Association, 1920.

[126]. Routine tests are ordinarily incubated for this period only, and if not decolorized in this time are recorded as stable.

[127]. Determination of the Biochemical Oxygen Demand of Sewage and Industrial Wastes, by E. J. Theriault, Report of the U. S. Public Health Service, Vol. 35, May 7, 1920, No. 19, p. 1087.

[128]. Standard Methods of Water Analysis, American Public Health Association, 1920.

[129]. Jordan, General Bacteriology, 1909, p. 91.

[130]. Ibid.

[131]. Reprinted in Vol. III of Contributions from the Sanitary Research Laboratory of Massachusetts Institute of Technology.

[132]. Formerly Chief Engineer of the Sanitary District of Chicago.

[133]. From “Sewage,” by Samuel Rideal, 1900, p. 16.

[134]. See Am. Civil Engineers’ Pocket Book, Second Edition, p. 982.