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Doc. 152.] 425
SWEDENBORG’S REPLY.
all copper -works after some trials have been made, and they
are pleased to compare this to a physician who has succeeded
in curing some patients one after another, etc. But it must
be well known to the Board of Mines that a certain know
ledge of the nature and contents of an ore is obtained after
an analyzer of ores has done his work, and still more when
this has been done on a large scale ; whence it follows that
this comparison cannot show us anything more, than that the
processes which are in use at Fahlun are more uncertain
than anywhere else, and that in several particulars they
require improvement and remedy.
Now, as the Board of Mines, for their own benefit, as
well as for that of the public generally, will without doubt
promote so important and useful a work, I so much the less
doubt their desire to do so, as on all previous occasions,
even when foreigners have offered their services to them, they
have manifested an interest in them; and this so much the
their own interests are deeply concerned in it.
Offering herewith my humblest thanks to Your Excellency for
having deigned to favour my proposition hitherto, and as such
a matter cannot be promoted by the writing of letters, but
simply by results produced, I do not in the least doubt that
Your Excellency will continue your favour in the future. I
remain , with all due respect,
Your Excellency’s most obedient servant,
EMAN. SWEDENBORG .
Stockholm , December 7, 1722.
[It does not appear from the Proceedings of the College
of Mines that the trial here spoken of was ever made.
It is doubtful. A full description of the improved processes
of gaining copper was given by Swedenborg in Vol. III of
his great work, “Opera Philosophica et Mineralia,” which was
published at Leipzig in 1734.]
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