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892 [Doc. 313.
SWEDENBORG’S WRITINGS.
1717. (12.) Om sättet för Handelns och Manufacturernas
uphjelpande (On the mode of assisting commerce and
manufactures), in MS., 6 pages, 4to. See Document 310,
no. 9.
This paper contains a proposal for the formation of a company,
by whom the exportation of Swedish iron and tar is to be controlled,
for the benefit of their producers. A company like that proposed
here by Swedenborg was subsequently established in Stockholm
under the name of Jern- Contoret (Iron-Office), whose purpose it is
to watch over the interests of Swedish iron.
1717. (13.) Memorial om Salt Sjuderiens inrättning i Sverige
(A memorial on the establishment of salt-works in Sweden),
in MS., 4 pages, folio. See Document 310, no. 10.
The plan for establishing salt-works in Sweden was submitted to
the king in March or April, 1717, as appears from Document 72
(Vol. I, p. 283).
1717. (14.) Om Elden och färgornas natur (The nature of
fire and colours), in MS., 6 pages, folio. See Docu
ment 311 , no. 11.
The theories, which the author seeks to establish in this disser
tation, are as follows; 1. Fire owes its origin to the elasticity and
fermentation of the air, since fire is fed by the air, and the air
exhales it, which is meant here by fermentation. 2. By colour is
here understood an appearance of light (ett sken) ; the colours of
the rainbow are caused by the ether passing through bubbles or drops
of water whereby it is refracted, and according to the angles of its
refraction it presents various colours. 3. Sight is caused by an
undulation of the ether, as hearing by that of the air. In the
course of his argument Swedenborg declares himself to be opposed
to the founding of a theory on analogy, and as preferring to base
it on experiments.
1718. (15.) Regelkonsten författed i tio Böcker (Algebra,
edited in ten books). Upsal, Werner; 135 pages, 16mo.
It is not stated on the title-page in what year this work was
published; but from Documents 76 and 80 it appears that it was
printed in the early part of 1718. It is the first treatise on Algebra
published in the Swedish language, the algebraical terms having
been most successfully rendered into Swedish by the author. The
titles of the various books or sections are as follows:
N
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