Vols. 39-214 (1874/75-1921/22) have a section 2 containing "Other selected papers"; issued separately, 1923-35, as the institution's Selected engineering papers.

The GBP1.2 billion Cairo Wastewater Project was designed to remove water from one of the world's largest and fastest growing cities and treat it to a standard permitting re-use for agriculture.

Reprint of the original, first published in 1871.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations.

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