[205]. Sewage Sludge by Allen.

[206]. From Eng. News-Record, Vol. 84, 1920, p. 995.

[207]. A Simple Mechanical Control for Dosing Sewage Beds, by P. Thompson, Eng. News-Record, Vol. 84, 1920, p. 1018.

[208]. Sewage Disposal by Kinnicutt, Winslow and Pratt.

[209]. Design of Siphon by G. H. Bayles, Eng. News-Record, Vol. 84, 1920, p. 974.

TRANSCRIBER’S NOTES

  1. Silently corrected typographical errors and variations in spelling.
  2. Archaic, non-standard, and uncertain spellings retained as printed.