Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 477
s to expose rather than the material of the crucibles. fresh surfaces. There are numerous There are 3 smelting methods in vogue, plans for arranging the furnaces, with known as the Belgian, English, and a view of economising fuel and labour, Silesian, though the English system has each adapted to… … often conducted in a sort of lime-kiln anew, the furnace is gradually heated with a small blast, as shown in Fig. 180. for 4 days till -it attains a white heat ;
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
