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888 [Doc. 313.
SWEDENBORG’S WRITINGS.
1716 and 1717. (7.) DEDALUS HYPERBOREUS, eller några
Nya Mathematiska och Physicaliska Försök och Anmerk
ningar, som Welborne Herr Assessor Pülheimer och andre
Sinrike i Swerige hafwa giordt och nu tid efter annan
til almen nytto lemna (Dædalus Hyperboreus, or some
New Mathematical and Physical Experiments and Obser
vations, made by the well-born Assessor Polhem, and other
ingenious men in Sweden, and which will be made public
from time to time for the general benefit). Upsal, 1716—1718,
six numbers, 154 pages, 4to.
The dedication to King Charles XII and the preface, which is
dated Upsal, October 23, 1715, were written by Swedenborg. His
own contributions to the various numbers are as follows:
No. I.
1. A hoisting machine for ore, where the ropes, of their own accord,
are changed from one wheel to another ; with an illustration, pp. 14 to 20.
2. Another hoisting machine, with an illustration, pp. 20 to 23.
No. II.
1. Professor L. R.’s thoughts about the manufacture of salt in
northern countries.-Concerning this article Swedenborg says in
Document 54 (Vol. I, p. 247), "I have inserted Doctor Roberg’s
experiment, and his proposition for the manufacture of salt, which
I have altered throughout, so that the experiment can now be made
more accurately. Should the Doctor desire his name to appear,
notwithstanding the many changes which have been made in the
article, he is free to have it;" pp. 28 to 31.
2. A table by which carolins (a Swedish and German Gold coin)
may be changed into dalers in copper, and into dalers in silver,
p. 33 et seq.
3. Another speedy method of changing carolins into any sort of
money, pp. 34 to 39.
No. III.
A new and easy method of making air-pumps by pouring water
into pipes, with an illustration, and the necessary mathematical
formulæ, pp. 50 to 64.
No. IV.
1. A project for a machine with wings and sails, by which one
may attempt to fly in the air, by N. N., with Assessor Polhem’s
objections, pp. 80 to 83. See Document 310, no. 6.
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