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DOCUMENT 145.
EXTRACT FROM THE MINUTES OF 1719.
Feb. 13, 1719. Emanuel Swedenborg was present.
Nov. 2. Emanuel Swedenborg handed in to the College of
Mines a “ Description of Swedish Iron furnaces and their
working."
[This treatise, which contains a minute description of the
subject in Swedenborg’s own handwriting, is preserved in the
archives of the College of Mines ; an authorized copy of it
is also preserved among the Swedenborg MSS. in the Library
of the Academy of Sciences. It was dedicated to the follow
ing officers of the College of Mines:
To the well-born Count, Councillor of State, and President
of the College of Mines, Jacob Spens :
and also to the well-born, noble, and honourable gentlemen,
the Vice-president, the Councillors and all the Assessors
of Mines, Mr. Urban Hierne, 53 Mr. Robert Kinnimundt, Mr.
Jonas Cederstedt, 122 Mr. Andreas Strömner,123 Mr. Jacob
Angerstein, Mr. Adam Leijell,103 Mr. David Leijell, 124 and
Mr. Anders Swab . 66
The introduction to this treatise is as follows:
It would have been more becoming in me to bring before
Your Excellency and the Honourable Royal College something
of greater importance and value than a mere treatise on a
coarse and ugly iron furnace ; especially as opportunity is
afforded in the Swedish mining districts of studying more
important furnaces, as those in which silver and copper are
smelted. Still, as my principal object has been to investigate
the nature of fire, and the manner in which it acts in all
kinds of furnaces and blasts, i. e. in everything that concerns
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