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DOCUMENT 41.
EXTRACTS FROM THE MINUTES OF THE
LITERARY SOCIETY OF UPSAL . *
1711, June 20. Present Professor D. Roberg,70 Professor
Elfvius,54 Magister Valerius.71
1711 , July. [Instructions to be sent to Eman. Swedberg in
London.]
§. 1. Price and description of an air-pump.
$. 2. That Emanuel Swedberg go to Flamsteed, examine his
instruments, how they are made, in what manner the minute
divisions are indicated; whether he uses a telescope instead of
diopters ; all about his other instruments; how they are moved
by his apparatus; and also how he makes use of his instruments
when it is dark, whether it is done by means of candles, &c.
§. 3. Prof. Elfvius promised to communicate the mode and
the points.
§. 4. That Emanuel Swedberg notice the division in the
instruments, and how they are tested or examined ; also what
they cost in respect to size.
§. 5. How much the newest globes cost, and in what
estimation they are held by the learned ; also whether it is
not possible to obtain engravings of them , so that they may
be mounted here.
§. 6. He is to be encouraged in trying to facilitate the
computation of eclipses.
§. 7. That the Philosophical Transactions be purchased
for the Library.
* Benzelius’ Collection, Vol. XL , " Collectanea Physico-Mathematica,"
No. 66.
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