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.
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.
Of late furnaces have been built even as wide as 17 ft.