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Doc. 205.] SWEDENBORG’S TRAVELS IN 1733. 59
About seventy-five kübel of charcoal or fifty Swedish pots (testæ)
are consumed ; so that for each hundred-weight a pot and a
half of charcoal is used. Each time from a hundred-weight to a
hundred-weight and a half of iron is smelted ; the pigs of crude
iron are about four ells long , and weigh from five to eleven
hundred-weight. The pieces that are smelted weigh each from
a hundred-weight to a hundred-weight and a half. Sparkling
scoriae of much density adhere to the walls. The whole furnace
is rather ample and capacious , its length and breadth being
about four ells.
In the works where the iron is flattened into plates, from
seventy to eighty plates, which are smooth, are manufactured
at a time ; each plate weighs half a pound. In these works
ninety kübel or sixty Swedish pots of charcoal are used every
week.
At Hans Jürgenstadt there is an inspector of the name
of Derfler, who has a most excellent collection of noble and
rare ores; likewise of druses. He was abroad fifteen years
for the purpose of buying specimens of rare ores for King
Augustus.
MILL FOR CRUSHING SILVER ORES AT HANS JÜRGENSTADT.
The ore which is obtained in the mines here is not smelted,
because there is no lead in it ; but in the pulverized form it
is sold to Trestad,[?] where there is an abundance of lead, and
where it can readily be passed through the tall furnaces, and
the silver extracted. The best mines at the present day are
the "Neue Jahr" (New Year) , and " der unverhoffte Gluche " [? ] ;
the ore which is broken there is the Weissgulden, the Roth
gulden, the Glaserz, and other rich kinds. Most of the
mines are under the town itself; there is an access to them
at more than twenty different places at the foot of the moun
tain. With respect to the crushing of the ore the following
particulars are to be mentioned : 1. The richer ore is crushed
in a dry state under one stamp or hammer only; it is then
removed and sifted, and its coarser part crushed again ; this
ore is not washed like the lighter ore, but is simply crushed
and sent to Freiberg. 2. The lighter or poorer ore is crushed
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