i68 



HOUSEHOLD BACTERIOLOGY 



Leavened bread, 6 



Leucocytes, 88 



Life, spontaneous generation 



of, 109 



work of dust plants, 63 

 Liquefying bacteria, 74 

 Lockjaw, cause of, 80 



Making antitoxin, 95 

 Meadow tea, no 

 Metchnikoff s theory, 93 

 Meteoric dust, 3 

 Method of infection, 78 



of study of bacteria, 112 

 Microbe, definition of, 16 

 Micro-organisms, 16 

 Microscope, compound, no 

 Mildew, 6, 37 

 Milk, bacteria in, 14 



clean, 14 



Pasteurized, 67 



souring of, 13 

 Mold, reproduction of, 33 



spores, 35 

 Molds, 6, 33, 39, 59 



in ripening cheese, 59 



work of, 36 

 Moldy houses, 38 

 Movement of bacteria, 26 

 Movements of dust, 4 

 Mustiness, 37 



Natural home of bacteria, 30 



immunity, 93 

 Nature of disease, 131 

 Nature's disinfectants, 96 

 Necessity of dust, 2 



Newman's theory, 93 

 Nitrifying bacteria, 5 1 

 Nitrogen traps, 52 

 Nutrient media for dust-gar- 

 dens, 13 



Opposition to vaccination, 147 

 Ordinary dust, 5, 13 

 Origin of disease germs, 77 

 Oxygen, relations of bacteria 



to, 24 

 Oysters, infection by, 82 



Pasteur's theory, 95 

 work of, in, 148 



Pasteurization, 66, 115 



Pasteurized milk, 67 



Pathogenic germs, 66 



Personal responsibility for 

 sanitation, 108 



Petri dish, 7 



Phagocytes, 88 



Photograph of dust -gardens, 

 i, 12, 99, 103, 105 



Planting dust-gardens, 10 



Plants, bacteria classed as, 112 



Plumbing, care of, 106 



Poisoning, blood, 91 

 effects of, 92 



Polluting water, 83 



Porcelain filters, 84 



Precautions to avoid germ in- 

 fection, 79 



Preparing soil for dust-gar- 

 dens, 9 



Preservatives, 72 



Preserving food, 68 



