Transcriber Note Emphasis denoted as _Italics_. U. S. DEPARTMENT OF AGRICULTURE. FARMERS' BULLETIN · No. 43. SEWAGE DISPOSAL ON THE FARM, AND THE PROTECTION OF DRINKING WATER. BY THEOBALD SMITH, M. D., _Professor in Harvard University, Pathologist to the Massachusetts State Board of Health, etc._ [Illustration] WASHINGTON: GOVERNMENT PRINTING OFFICE. 1896. CONTENTS. Page. Introduction 3 Disposal of sewage 5 Night soil 7 The privy 7 The cesspool 7 The dry-earth closet 8 The water-closet 11 Liquid sewage 11 Vaults 11 Irrigation 12 Kitchen and chamber slops 14 Waste and garbage 15 Protection of drinking water 16 Ways of contamination 17 Construction of wells 18 Conclusion 19 ILLUSTRATIONS. Fig. 1. Shallow barnyard well 6 2. Portable earth closet 8 3. Old form of earth closet 9 4. Earth closet and dry catch 10 5. Self-acting peat dust closet 11 6. Settling chamber and flush tank for irrigation 12 7. Subsurface irrigation of sewage 13 8. Garbage cremator 16 SEWAGE DISPOSAL ON THE FARM AND THE PROTECTION OF DRINKING WATER. INTRODUCTION.