The New Zealand Railways Magazine, Volume 2, Issue 9 (January 1, 1928)
If sufficient air is supplied the carbon will be burnt to carbon dioxide gas at the bottom of the box; if insufficient air is supplied it will be immediately burnt to carbon monoxide gas, the complete combustion of the fuel taking place, in the latter case, above the fire
If sufficient air is supplied the carbon will be burnt to carbon dioxide gas at the bottom of the box; if insufficient air is supplied it will be immediately burnt to carbon monoxide gas, the complete combustion of the fuel taking place, in the latter case, above the fire.