(A) _Natural Treatment._ (B) _Artificial Treatment._ 1. Removal of suspended 1. Removal of suspended matters. matters. 2. Removal of from 75 to 95 2. Removal of from 50 to 75 per cent. of the dissolved per cent. of the dissolved organic matters. organic matters. 3. Removal of pathogenic 3. Nil. Effluent bacterially germs. practically raw sewage. 4. Utilisation of large portion 4. Nil. All manurial elements of manurial elements. escape into the rivers. 5. Great reduction of quantity 5. No appreciable reduction of liquid. of quantity of liquid. LONDON: PRINTED BY WILLIAM CLOWES AND SONS, LIMITED, GREAT WINDMILL STREET, W., AND DUKE STREET, STAMFORD STREET, S.E. Transcriber’s Note: Words and phrases in italics are surrounded by underscores, _like this_. Chemicals are displayed with the numbers surrounded by braces, e.g. CO{2}. Footnotes were numbered sequentially and moved to the end of the section in which the related anchors appear. Wide tables were split for easier viewing on small screens. An unprinted letter “S” was added to sidenote, “Springs.” Obsolete and alternate spellings were not changed. End of the Project Gutenberg EBook of Natural & Artificial Sewage Treatment, by Alfred S. Jones and H. Alfred Roechling