Show A containing A correspondent suggests a method ol 01 abating the smoke nuisance in close manufacturing localities by having f smoke duct running through a town connected in a suitable manner with the different furnaces in carrying out such a plan it is suggested that the duct might be conveyed outside of tha city to a condensing station an exhaust machine being employed to force the draught at the condensing station the soot laden air would be made to pass through gatei conveniently proximate in this way depositing tho solid matter while the ail passes away comparatively pure the boot which remains might easily he collected caked and used as fuel etc the dimensions 0 tha duct for such a purpose would have to vary as in tho case of water and other mains according ithe work to be performed indian en gi |