Among the borough's manufactures are stoves and furnaces, malt liquors and silk.
These small furnaces are frequently arranged for direct coal firing, but regenerative gasfired furnaces are also employed.
The shores of all the lakes which filled the depressions during the Lacustrine period abound in remains dating from the Neolithic Stone period; and numberless kurgans (tumuli), furnaces and so on bear witness to a much denser population than the present.
On account of its transparency and its resistance to fire and sudden changes of temperature, mica has been much used for the windows of stoves and lanterns, for the peep-holes of furnaces, and the chimneys of lamps and gas-burners.
The Venetian furnaces in the island of Murano are small low structures heated with wood.