bles, 94;
of water per person, 92;
of water used, 90.

Quarantine, regulations, 422;
for scarlet fever, 369.

Quinine and malaria, 378, 386.

Rabies, 406; antitoxin, 309.

Radiators by windows, 79.

Rain-water, storage, 101;
supply, 99.

Rates of water consumption, 95.

Rations for daily use, 263.

Register in the ceiling, 85.

Remedies, for consumption, 340;
for pneumonia, 347.

Reservoir, for brook supply, 126;
on a brook, 102.

Resistance, of body to disease, 297, 308;
to tuberculosis, 335.

Rest for consumptives, 340.

Results of measles and scarlet fever, 366.

Rochester and the milk supply, 237.

Rock formations and hygiene, 35.

Roof of spring-chamber, 157.

Rubber boots, 283.

Running trap for main drain, 201.

Rusting of driven-well casing, 119.

Saliva from mouth, 260.

Sand filter beds for sewage, 219.

Scarlet fever, and milk, 240;
preliminary symptoms of, 367;
quarantine, 369.

Scarlatina, 369.

School vaccination, 412.

Scurvy and fresh vegetables, 266.

Sedimentation of sewage, 227.

Septic tanks, 229.

Sewage disposal, 208.

Sewage-sick land, 214.

Sewage treatment on land, 213.

Sewer pipe in wells, 105.

Sewers and sickness, 36.

Sex and age in disease, 299.

Shallow wells, 113.

Sinks, for kitchen, 196;
and their discharges, 214.

Size, of openings for fresh air, 85;
of pipe for conveying water, 166;
of spring reservoir, 156;
of waste weir, 163.

Slaughter-houses, 255.

Sleep, 292.

Smallpox, 396;
and chicken pox, 399;
instead of chicken pox, 376.

Smoking and its effects, 275.

Soap, as an antiseptic, 326;
its relation to hard and soft water, 134.

Soil, air and its exclusion, 49;
for disinfection, 331.

Soil-pipe in house, 201.

Somerville typhoid epidemic, 359.

Sources of water-supply, 108.

Space between houses, 30.

Spring-chamber, 157.

Spring, extensions, 123;
reservoirs, 155.

Springs, 121;
and their formation, 109.

Squirrels, and the bubonic plague, 395;
in the attic, 30.

Stables, and dirty milk, 237;
and water consumption, 94;
for clean milk, 242;
space required per cow, 63;
ventilation, 86.

Stamford typhoid epidemic, 359.

Steam, for disinfection, 329; pumps, 179.

"Stegomyia mosquito," 386.

Sterilization of milk, 234.

Stone dam, 159.

Storage, on a brook, 102;
reservoirs, 127;
tank for rain-water, 101.

Stoves used in ventila