110 INDEX. 



PAGE 



Dust, harmful effects of, on the eyes "" .52 



44 in inhaled air, disposal of, by body , , , , . ',' y 



" " public conveyances . ., , . . . .84 



44 " theatres, or as means of conveyance of disease , . .81 



44 u railway carriages as source of danger . . . 85 



44 in-doors, danger of infection from . . - , . .76 



inorganic elements of . . . . . . .4 



41 as causes of disease . . . . '- - y 



lodgment of, in tissues of lungs ...... 44 



materials composing . . . . . . .3 



' metallic . . . . . . . . .4 



mode of occurrence of bacteria in . . . . . .8 



nature of, in general ........ i 



1 organic or living elements of ...... f 



' out-of-doors, micro-organisms in . . . . . . ao 



44 relations of, to catarrh . . . . . . .52 



" removal of, from houses ....... 77 



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



44 settling of, in-doors ........ 22 



44 significance of, in causing disease ...... 50 



44 sweeping away of, by ciliated cells ..... 39 



44 street-, dangers of infection from ..... 75 



" tenacious clinging of, to fabrics ...... 29 



44 tobacco- ......... 5 



44 tubercle bacilli in 66 



44 two modes of freeing air from ...... 102 



44 woollen . . , f 



Dusting ....78 



Erysipelas .' 55 



Evolution, failure of, to eliminate the porcine element in street loafers . 100 

 Expectoration as a common vice . . 99 



dangers of, in consumptives . . . 61 



Eyes, harmful effects of dust on . . . . . . .52 



Filters, air-, in biological air analysis . . . . . 13-15 



44 dust-, lymph-glands in lungs as . . . . 46 



Filthy cities, no necessity for . . . . .92 



Filtration method of air analysis . . . , . 15 



General knowledge, necessary to prevent spread of bacterial diseases by dust 91 

 Germs, agrial modes of study of . . . . "- .11-13 



