THEOBALD SMITH, M. D.,

Professor in Harvard University,
Pathologist to the Massachusetts State Board of Health, etc.

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]