i66 
HOUSEHOLD BACTERIOLOGY 
Cause of lockjaw, 80 
Cheese, 59 
molds in ripening, 59 
Cider vinegar, 60 
Clean eggs, 73 
Clean milk, 14 
Cleaning school rooms, 107 
Cleanness, sanitary, 108 
Clothing, brushing, 106 
Colonies of bacteria, 12 
of dust plants, 10, 15, 16 
Color of mold spores, 38 
Common methods of preserv¬ 
ing food, 68 
Communicable diseases, 75 
Compound microscope, no 
Compressed yeast, 43 
Contamination, sewage, 82 
Covering food, 104 
Criminal carelessness, 83 
Crops, rotation of, 53 
Cultures, solid, in 
Deadly dish-cloths, 106 
Deaths from lockjaw, 80 
Decay, 115 
Diphtheria antitoxin, 95 
bacillus, 135 
Disinfectants, 65 
nature’s, 98 
Disinfectant, sunshine as a, 25 
Disinfect soiled articles, 79 
Disease, care of discharges in, 
79 
from molds, 36 
germs, 75-86 
germs, effect of light on, 83 
germs, identifying, 113 
germs, origin of, 77 
nature of, 131 
producing bacteria, 132 
Diseases communicable, 75 
infections, 133 
specific germs of, 76 
Drying food, 70 
Dust, 1-7 
movements of, 4 
ordinary, 5, 13 
particles, bacteria on, 97 
plants, 15 
plants in refrigerator 28 
plant.*}, life work of, 63 
sources of danger, 114 
Dusters, washing, 104 
Dust-garden out of doors, 73 
plot, the, 7 
Dust-gardens, 7-14 
photographs of, 1,12, 99, 
r °3, 105 
planted after sweeping, 98 
soil for, 13 
Dusting, rules for, 104 
time for, 100 
Dust-proof room, 2 
Effect of antitoxin on the body, 
140 
of cold on bacteria, 90 
of gastric juices on bacteria, 
87 
of light on disease germs, 83 
of poisoning, 92 
of sunlight on disease germs, 
26 
