INDEX. 



PAGE 



Germs in in-doors dust . . . . . . . .27 



11 in out-doors dust ........20 



" colonies of . . . . . . . . .12 



" nature of ......... 7 



" origin of, in in-doors air . . . . . . .30 



" safeguards of body against aerial ..... 36 



Hotel bedrooms as sources of dust-infection ..... 89 

 House furnishing as affecting the risk of dust-infection . . .78 



Immunity of body to disease germs . ..... 49 



In-doors air, analysis of ........ 27-35 



Infection, dangers of, from street dust ...... 75 



" degrees of readiness of, in different diseases . . .94 



Infectious diseases ......... 55 



" remedial agents in . . . . .96 



Isolation of the sick as means of prevention of bacterial diseases . . 54 



Lungs, most common seat of tuberculosis .... 65 



" pigmentation of, by inhaled dust ..... 44 



Lymph, filtration of, in the lungs ...... 45 



Lymph-glands as dust-filters . . . . . . .46 



" " localized tuberculosis in . . . . . .67 



Measles 53,94 



Meat, tubercular, as food, dangers of . . . . .64 



Michigan, frequency of consumption as compared with small-pox in . 62 



Micro-organisms in in-doors dust ....... 27 



" " " out-doors dust ...... 20 



" " nature of . . ...... 7 



kt '* safeguards of body against . .... 36 



Milk from diseased cows, dangers of 64 



Motes in the sunbeam ........ 3 



Moulds 7 



Mould-spores in air analysis ....... 18 



" " " dust ........ 9 



" " preponderance of, in wet weather . . . .22 



Neumann, air analysis by . . . . . . . .33 



New York, air analysis in . ....... 33-26 



" " filthy streets of ....... 21 



Official negligence no excuse for private indifference to cleanliness . . 90 



