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Gentleman's Magazine vol.24 p.567, 1754:-
... ... G. S.
P.S. The method mentioned in your last, p.534, of
using fire balls to save coals, has been long practised by
the wretched inhabitants of the coasts of Cumberland
and Northumberland: They roll a ball of clay in the
small coal which is found on the surface of their
declivities, and this they call crow coal; but as they have
no better fuel to kindle the ball, and keep it glowing it is
a poor succedaneum for sea coal, and the fires thus made are
scarce worthy of the name.
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