THE DEPOSITION OF SMOKE AND DUST. 191 



fume. In some works tlio fumo is lod tlirongli chambers 

 specially constructed for tho purpose, upon tlio floors of 

 which water is allowed to stand. Other plans have been 

 adopted, among thom that of using woollen bags through 

 which the fumo is blown and by them arrested. Where the 

 ofEect of tho electrical discharge has been tried, the inlet of 

 the chamber into which the fume has been led has been 

 surrounded by points for the rapid dischai'go of electricity 

 upon the smoke as it entered. 



It is a question still to bo solved, as to liow far tho 

 phonomonon which is tho subject of this paper will bo ap- 

 plied to tho requirements of every-day life. 



In flour mills, where inflammability of tho fine dust is a 

 direct source of danger, the application of such an apparatus 

 might bo of considerable benefit. Again, whore such dusty 

 work as chaff-cutting is carried on close to warehouses or 

 dwellings, it might bo of advantage to use the electrical 

 discharge for condensing or throwing down the particles of 

 dust. 



