| Page. | | Introduction | 3 | | Plans and advice | 3 | | Sewage, sewers, and sewerage defined | 4 | | Nature and quantity of sewage | 4 | | Sewage-borne diseases and their avoidance | 5 | | How sewage decomposes | 9 | | Importance of air in treatment of sewage | 10 | | Practical utilities | 11 | | Kitchen-Sink Drainage | 26 | | Cesspools | 26 | | Septic tanks | 28 | | Grease traps | 53 | | General procedure | 55 |
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