1. Natural vs. Artificial: "The Right Way to Dispose of Town Sewage"
2. Public vs. Private: "Nature Must Be Circumvented"
3. Craft vs. Science: "Be an Operator, Not a Valve Turner"
4. Profit vs. Purification: "Sewage Is Something to Be Got Rid Of"
5. The Contradictions Continue: Sewage Treatment since the Clean - Water Act
6. From Sewage to Biotech: "What We Have before Us Is an Industrial Product"
Conclusion: The Living Machine®