CRUCIBLES AND FURNACES FOR THE FUSION OF GLASS.
Fire-clay and silica-brick--Manufacture of glass-melting
pots--Drying and first heating of pots--Blocks for tank
and other furnaces--Uses of silica brick--Furnaces--
Coal-fired and gas-fired furnaces--Gas producers--
Regenerative furnaces, principles and construction of
Siemens’ furnaces--Recuperative furnaces--General
arrangements of modern tank furnaces--Relative
advantages of tank and pot furnaces _p._ 54