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Doc. 205.] 71
SWEDENBORG’S TRAVELS IN 1733.
powder usually contains a half or a quarter of an ounce of
gold.
They have also a Waschbank, where the stony part is
first separated from that which is heavier ; it is somewhat ex
cavated on the top, so that two machines can be moved in it
at the same time, one in one direction and the other in an
other. The water thereby is much stirred up and flows away
charged with mud, leaving behind a less quantity of useless
powder, &c.
August 22. I returned to Prague from Eule and visited
a monastery of the Barnabites, in order to examine a collection
of minerals ; the collection was ingeniously arranged, but more
for show than for use.
August 23. I returned from Prague to Dresden, where I
arrived on the 25th. On the way I passed several towns,
among others, Budin, where there is a monastery. Near a
village called Linai, in Bohemia, which lies nearly at the foot
of the lofty mountain Geyer, by which Bohemia is divided
from Saxony, I saw a garden full of tropical trees, as orange
trees, and citron-trees, also a great many other specimens of
plants, long and pointed, &c.; and a larger quantity of oranges
and citrons hanging on the trees than I have seen anywhere
else ; it belongs to Count Nostiz.
August 25. I reached Dresden.
August 28. I met Mr. Leisner who desires to introduce the
use of peat into Saxony. He told me that a Mr. Carlewitz
experimented on the use of peat in blast-furnaces, and that
he so far succeeded, that he used with advantage two-thirds
of peat and a third of charcoal ; that afterwards he burned
or calcined peat, covering the heap well. He obtained
from 6000 pieces of crude peat three fuder of charcoal,
which did not on being burnt leave behind any impurity
in a blast-furnace. Here, however, it must be observed :
1. That they are light and delicate, and are easily blown to
pieces by the blast, and that they did not yield any fire, but
only a little flame which contributed much to the smelting.
They easily crumble to pieces before the blast, because they
are small, consisting altogether of roots turned into charcoal.
2. That, consequently, they must not be placed in the middle
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