am, 160;
for spring-chamber, 158;
in cellar floor, 60;
in stables, 64;
method of mixing, 66.

Construction, of air-tight barns, 89;
of dug wells, 113;
of houses, 49;
of septic tanks, 230.

Consumption and bad ventilation, 74.

Contagion in children's diseases, 386.

Contagious diseases, 305.

Cooking and digestion, 268.

Cooling of milk, 242, 247.

Corn and pellagra, 391.

Corrosive sublimate, 324.

Cost, of driven wells, 121;
of flush tank, 207;
of fuel for pumping, 178;
of operating gas engines, 178;
of plumbing, 200; of ventilation, 87;
of water pipe, 168.

Cows and ventilation, 71.

Cow stables, ventilation of, 62.

Creamery and typhoid fever epidemic, 147.

Creosols, 323.

Crib dam, 163.

"Culex" mosquito, 380.

Curb for well, 141.

Cure of hookworm disease, 390.

Cut-off wall for dam, 160, 161.

Damp cellars, 27.

Damp courses in house walls, 56.

Dampness, and disease, 26;
of cellar walls, 52.

Damp soils, 27; and their effects, 40.

Dams for reservoirs, 158.

Danger, from drainage of barns and barnyards, 137;
from leachings from privies and cesspools, 138.

Dangers, of polluted air, 73;
of polluted water, 144.

Death-rate, from typhoid fever, 11;
from typhoid fever in New York State, 15;
of babies in Rochester, 237;
records, accuracy of, 6.

Death-rates, at various ages, 10;
in general, 2;
in New York State, 4;
in rural communities, 8;
in various countries, 3;
of children, 9;
outside of New York City, 7.

Deaths from measles and scarlet fever, 365.

Decomposition in sewage, 209.

Deep well pump, 106.

Deep wells, 115.

Deficiency of water from well supply, 104.

Definition of sewage, 208.

Deodorizers, 317.

Detection of animal pollution, 137.

Diagnosis of diphtheria, 404.

Digestion and its requirements, 261.

Digestive processes, 259.

Dimensions of hydraulic rams, 173.

Diphtheria, 401;
and milk, 239;
antitoxin, 310, 402;
in the country, 19.

Direct causes of disease, 302.

Dirt and disease, 296.

Dirt dam, 159.

Disadvantages, of hydraulic rams, 171;
of windmills, 169.

Disease, the causes of, 295.

Diseases caused by milk, 238.

Disinfecting, agents, 315;
a room, directions for, 319;
gases, 318.

Disinfection, 314;
by heat, 327;
for chicken pox, 376;
for consumption, 337;
for measles, 373;
for scarlet fever, 371;
for whooping cough, 375.