DESCRIPTION
Soda production: 1-2) Sulvate oven, 3) Condensation bottles, 4+5) Condensation troughs made of sandstone ; 6) Condensation tower; 7) Smelting furnace; 8) Smelting furnace with cylindrical rotary hearth; 9) Apparatus for leaching of the raw soda. Wood engraving, published in 1878.