This antique volume contains a detailed treatise on the use of sewage as a fertiliser in agriculture, with information on filtration, purification, the lime process, and the various chemicals involved in sewage treatment. Containing much in the way of information still relevant to the modern farmer and farming process, this text will prove an invaluable tool for anyone interested in agricultural fertiliser, and makes for a worthy addition to collections of farming literature. The chapters of this book include: 'Sewage', 'Commercial Fertilizers better than Sewage', 'Weakness of Sewage', 'The Economic Argument Against Manuring with Sewage', 'Waste of Fertilizers by Rivers', 'Purification of Sewage by Percolation', 'Intermittent Filtration', 'Purification of Sewage by Ferments', etcetera. We are proud to be republishing this antique book now complete with a new introduction on farming.