Came home by Greenwich ferry, where I saw Sir J. Winter's project of charring sea-coal, to burn out the sulphur, and render it sweet. He did it by burning the coals in such earthen pots as the glass men melt their metal, so firing them without consuming them, using a bar of iron in each crucible, or pot, which bar has a hook at one end, that so the coals being melted in a furnace with other crude sea-coals under them, may be drawn out of the pots sticking to the iron, whence they are beaten off in great half-exhausted cinders, which being rekindled, make a clear, pleasant chamber-fire, deprived of their sulphur and arsenic malignity. What success it may have, time will discover.55
LONDON