Salt and the salt industryCalvert, Albert Frederick
History
Salt and the salt industry
Calvert, Albert Frederick
Salt industry and trade; Salt industry and trade -- England -- Cheshire
“What is the manner of their (the salt-makers) work? or what time of
boiling the salt water? Whether they use any peculiar thing to make it
granulate, and, if so, what that is?”
In the course of his reply, he says: “They use for their fuel pitcoals
brought out of Staffordshire. These pans are set upon iron bars,
bricked in very close. They first fill their pans with brine out of
the pit: which comes to them in several wooden gutters: then they put
into their pans amongst the brine, a certain mixture, made of about
20 gallons of brine, and two quarts of calves’, cows’, and, chiefly,
sheep’s blood. Of this mixture they put about 2 quarts into a pan that
holds about 360 quarts of brine: this bloody brine at the first boiling
of the pan brings up a scum which they are careful to skim off: they
continue their fire as quick as they can till half the brine be wasted,
and this they call boiling upon the fresh. But when it is half boiled
away, they fill their pans again with new brine out of the ship (so
they call a great cistern by their pan sides, into which their brine
runs through the wooden gutters from the pump, that stands in the pit)
then they put into the pan two quarts of the mixture following: they
take a quart of white of eggs, beat them with as much brine, as before
was done with the blood; and thus that which they call the whites is
made. As soon as this is in, they boil sharply till the second scum
arise: then scum it off as before, and boil very gently till it corne;
to procure which, when part of the brine is wasted they put into each
pan of the size aforesaid, about a quarter of a pint of the best and
strongest ale they can get: this makes a momentary ebullition, which
is soon over, and then they abate their fires yet not so but that they
keep it boiling all over though gently: for the workmen say that if
they boil fast here, it wastes their salt. After all their leach brine
is in, they boil gently till a kind of scum comes on it like a thin
ice: which is the first appearance of the salt: then that sinks and the
brine everywhere gathers into cornes at the bottom to it, which they
gently rake together with their loots, this they continue till there is
but very little brine left in the pan: then with their loots they take
it up, the brine dropping from it, and throw it into their barrows,
which are cases made with flat cleft wickers, in the shape almost of a
sugar loaf, the bottom uppermost. When the barrow is full they let it
stand so for an hour and a half in the trough where it drains out all
the leach brine, then they remove it into their hothouse behind their
works made there by two tunnels under their pans, carried back for
that purpose. The leach brine that runs from the barrows they put into
the next boiling, for it is to their advantage being salt melted and
wanting only hardening.
Public-domain text, read in full here on John Shaqi.
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