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Doc. 56.] 251
POLHEM TO ERICUS BENZELIUS.
5
me as soon as possible, you would confer a real benefit upon
me, and gratify my chief desire. Please remember me very
kindly to sister Anna, and little brother Eric,58 to whom I
recommend the enclosed treatise of Pålhammar. Commending
you to God’s protection, I am, most honoured friend and brother,
Your most faithful brother and servant,
EMAN. SWEDBERG.
Brunsbo, 4th March, 1716.
DOCUMENT 56.
POLHEM TO ERICUS BENZELIUS. *
Most worthy and most learned Librarian,
Most respected friend,
By the last post Mr. Swedberg’s letter ar
rived, and it is, together with what I enclose herewith, to
be printed. At his desire I read it through in the greatest
haste, and as I cannot find but that all is correct, I have
nothing else to remark respecting it, except that I see Mr.
Swedberg desires to have the triangle introduced about
compound interest, which we have lately discussed; and where
it is more expeditious to use a curve in
the place of the cross- lines, as is shown
in the annexed figure:
I left with Mr. Swedberg a small beginning or intro
duction to a mechanical and mathematical work for the use of
young people, which he said he should see through the press;
but as there is no great hurry for this, I should like to hear
what the mathematicians at Upsal have to say about it,
and in what it might be improved. I do not care whether
my name appear upon it or not; if only it can be so arranged
that the young people may profit by it; and whenever it is
found that the work is in request, it may be increased to a
* Polhem’s MSS. in the Benzelius Collection at Linköping, p . 347.
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