Quarantine, breaking, shows selfishness, 126; how broken by family, 105; rules of, 105; seriousness of breaking, 101; when safe to raise, 102; why necessary, 101; why some cases escape, 102-104 Reflex action, 181 Respiratory system, 174-177 Rest, proper amount of, 51 Retina, 178 Rocky Mountain Spotted (Tick) Fever, how transmitted, 94 Rubbers, necessity of wearing, 11 Saliva, effect of, on starches, 39, 41 Salivary glands, 170 Scarlet fever, a dangerous disease, 124; mild cases dangerous, 123, 124 Scarlatina, 125 Scarlet rash, why quarantine is necessary in, 125 School lunches, 37 Sclera, 177 Sebaceous glands, 169 Sewage, effect of, on water, 85-87, 115 Sickness about a dairy, 26, 103, 115; due to germs, how prevented, 3 Sick room, stay away from, 75 Skin, care of, 60, 61 Smallpox, fatality of, 131; how prevented, 135-137; during Franco-Prussian War, 132; in Sweden, 133; in Gloucester, 134; in the Philippine Islands, 134 Spitting, dangers from, 151; how avoided, 152; where to spit, 152, 153; where not to spit, 151 Springs, how polluted, 87 Street cuspidors, 152 Sunshine, effect of, on germs, 77, 78 Suppuration, how the surgeon prevents, 96; how you may prevent, 97; real cause of, 96 Sweat glands, the work of, 60 Teeth, brittle, 42; dangers from poor, 41-43; how to care for, 43; necessity of baby teeth, 41; uses of teeth, 41; why, decay, 42 Tendons, 167 Tobacco, a poison, 64; effect of, on blood, 65; on heart, 66; on nervous system, 66; on nose and throat, 65; on stomach, 66; extra work caused by, 64 Toilets, improper construction of, 86; proper construction of, 87; relation to wells, 85-87 Tonsils, 49, 50 Trachea, 175 Tuberculin test, 155, 156 Tuberculosis, can be prevented, 142, 148, 157; fatality of, 142; fresh air in, 157, 158; germ, discovery of the, 145; how to get, out of a house, 147, 148; how germs leave the body, 150, 151; how spread from cows, 28, 155; how spread from the lips, 153-155; how detected in cows, 155; a house disease, 146, 147; not inherited, 146; of the glands, 144; of the joints, 143; of the spine, 144; of the stomach, 144; of the throat, 143; prevalence of, 142; pure food in, 158; rest in, 157; should be recognized early, 157; sunshine in, 158; why called the Great White Plague, 142 Typhoid fever, animals free from, 113; carried by flies, 80, 81, 116; carried by milk, 22, 117; effect of a single case, 114; how germs leave the body, 113; how germs get into the body, 113; how germs get into water, 114; importance of cleanliness, 117, 118; life of germs in a stream, 115; recovered patient dangerous, 117 Umbrellas, necessity of, 11