142 INDEX. 



Milk and tuberculosis . ";. 73 



ik color-forming bacteria in, . . . . .47 



Moon, old plan for communicating with ...... 31 



Muscle cells . . . . . . . . . .10 



Nerves . . . . . . "" . . n 



New York, ice supply of .... 130, 131 



" Vl water supply of . . . . . . .120 



Olynthus\ . . . . . . . . . .6 



Overcrowding and disease . ..... 104 



Ovum . ....... 9 



Pathogenic bacteria ........ 53 



Philadelphia, water supply of ....... 122 



Phosphorescent bacteria . ..... 41 



Physiological division of labor in cells ...... 8 



Plate cultures of bacteria ... . . . . . 35 



Pneumococcus .... ... 99 



Pneumonia and diphtheria . . > . 100 



" bacteria of. . . . . , . .99 



Poisons produced by bacteria ... 53, 66, 85 



Potatoes for bacterial cultures ....... 30 



Predisposition to bacterial disease . . . . 71, 93 



Prevention of bacterial diseases . . . . . 79, 86, 104 



Protozoa of malaria ..... . 102 



Ptomaines . . ... . . 53, 66, 85 



Pure cultures of bacteria . . . . . . . . 35, 38 



Pus . . . . . . . . . . .64 



Putrefaction . "~ . . . . . . .20 



Pyogenic bacteria . ....... 68 



Rooms, living-, pathogenic bacteria in . . . . . . no 



Scarlet-fever . . . . . . . . . . 100 



tk " spread of, by milk . . . . . . 107 



Sewer gas and diphtheria ........ 99 



" " lk typhoid fever ....... 88 



Small-pox ... . . . . . 101 



Spontaneous generation ... .... 22 



Spores, in bacteria ... ..... 19 



Sputum, dangers from, in tuberculosis . . . 75 



Staphylococcus in wound diseases . . . . . .61 



Streets, dirty, as source of infection ...... no 



Streptococcus . .. 40, 61 



of diphtheria . . . . . .97 



Suppuration . ..64 



