With producer gas it is necessary to pre-heat both the gas and the air which is supplied for its combustion by passing both through heated regenerators (for an account of the principles of the regenerative furnace see article Furnace).   anvd [Please select]

= Generators--Generators Employing Steam--Stirring and Feed Regulating Appliances--Direct Generators--Burners--Regenerators and Recuperators--Glass Smelting Furnaces--Metallurgical Furnaces--Pottery Furnace--Coal Dust Firing.   anvd [Please select]

All other nations were represented as incompetent and decadent; the Prussians were the leaders and regenerators of mankind.   anvd [Please select]

Generators -- Generators Employing Steam -- Stirring and Feed Regulating Appliances -- Direct Generators -- Burners -- Regenerators and Recuperators -- Glass Smelting Furnaces -- Metallurgical Furnaces -- Pottery Furnace -- Coal Dust Firing -- Index.   anvd [Please select]