15 



the South Kensington Mus um, of which the following 

 is a List of Contents : 



Fuels : 



Fuels of modern origin. 

 Lignites and brown coals. 

 Bituminous substances and oil shales. 

 British coals. 

 Foreign coals. 



European coals. 



American coals. 



Asiatic coals. 



Australasian coals. 



African coals 

 Cokes. 

 Patent fuels. 



Refractory Materials for Furnaces, &c. : 



Clays, bricks, and sandstones. 



Graphite. 



Casting materials. 



Copper : 



Experiments showing the properties of copper. 



Copper ores. 



Products of English copper smelting : 



Early stages. 



Experiments on blue metal. 



Products rich in copper. 



Ore furnace and metal slags. 



Special furnace products. 



Moss copper. 



Kernel roasting. 

 Products of the refinery furnace : 



Refinery slags. 



Special refinery products. 



Illustrations of foreign copper smelting Saxony. 

 Copper smelting at the Rammelsberg, Harz : 



Primary smelting. 



Drying the residual copper. 



Refinery process. 



Treatment of waste products. 



Treatment of the furnace accretions. 

 " Saiger " processes at Hettstedt : 



Leading process. 



Liquidation process. 



Cupelling process. 



Drying process. 



Refining process. 



