. Fresh-air inlet. Position of inlet.
Foul-air outlet. Size of openings. Ventilation of stables.
Cost of ventilation. Relation of heating to ventilation 68-89

CHAPTER V

QUANTITY OF WATER REQUIRED FOR DOMESTIC USE

Modern tendencies. Quantity of water needed per person.
Quantity used in stables. Maximum rate of consumption.
Variation in maximum rate. Fire stream requirements.
Rain-water supply. Computation for rain-water storage.
Computation for storage reservoir on brook. Deficiency
from well supplies 90-107

CHAPTER VI

SOURCES OF WATER-SUPPLY

Underground waters. Ordinary dug well. Construction of dug
wells. Deep wells. Springs. Extensions of springs. Supply
from brooks. Storage reservoirs. Ponds or lakes.
Pressure or head 108-130

CHAPTER VII

QUALITY OF WATER

Mineral matter. Loss of soap. Vegetable pollution. Animal
pollution. Well water. Danger of polluted water 131-152

CHAPTER VIII

WATER-WORKS CONSTRUCTION

Methods of collection. Spring reservoirs. Stream supplies.
Dams. Waste weirs. Gate house. Pipe lines. Pumping.
Windmills. Hydraulic rams. Hot-air engines. Gas
engines. Steam pumps. Air lifts. Tanks. Pressure
tanks 153-188

CHAPTER IX

PLUMBING

Installation. Supply tank. Main supply pipe. Hot-water circulation.
Kitchen sinks. Laundry tubs. Hot-water boiler.
Water-back, wash-basin, bath-tub. Cost of plumbing installation.
House drainage. Trap-vents. Water-closets 189-207

CHAPTER X

SEWAGE DISPOSAL

Definition of sewage. Stream pollution. Treatment of sewage
on land. Surface application. Artificial sewage beds. Subsurface
tile disposal. Automatic syphon. Sedimentation.
Underdrains 208-232

CHAPTER XI

PREPARATION AND CARE OF MILK AND MEAT

Bacteria in milk. Effects of bacteria. Diseases caused by milk.
Methods of obtaining clean milk. City milk. Dangers of
diseased meat. The slaughter-house 233-256

CHAPTER XII

FOODS AND BEVERAGES

The human mechanism. Digestive processes. Teachings of the
digestive operations. Balanced rations. Human appetite.
Effect of individual habits. Cooking. Muscular and psychic
reactions. Consumption of water. Condiments and drinks.
Tobacco. The drug habit