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Doc. 48.] SWEDENBORG TO ERICUS BENZELIUS. 237
а
over hills, sand-banks, &c. 4. A machine to discharge by air
10,000 or 11,000 shots per hour. All these machines are care
fully described and calculated algebraically. I had further
intended to communicate plans of some kinds of vessels and
boats, in which persons may go under water wherever they
choose: also a machine for building at pleasure a blast furnace
near any still water, where the wheel will nevertheless revolve
by means of the fire, which will put the water in motion :
likewise some kinds of air -guns that are loaded in a moment,
and discharge sixty or seventy shots in succession, without any
fresh charge. Towards winter, perhaps, I shall draw and
describe these machines : I should like to have the opportunity
and the means of setting one or other of them up and getting
it to work.
The day after to-morrow I will travel to the Kinne
kulle,* to select a spot for a small observatory, where I intend,
towards winter, to make some observations respecting our
horizon, and to lay a foundation for those observations, by
which my invention on the longitude of places may be con
firmed : perhaps, I may then in all haste travel first to Upsal,
to get some things I need for it.
Please let me know whether Professor Upmark61 has yet
obtained his appointment. If there is anything in which I
can be of use to you again, I wish you would inform me of
it. Will you be so good as to recommend me to any of the
professors for any opening that may present itself? The rest
I shall myself see to. By the next opportunity I will send
you something which I saw through the press before returning
home : it is an oration on the King’s return, and also some
fables like those of Ovid, which I have called Camena Borea , t
and have dedicated to Cronhjelm.63 I am waiting impatiently
for your oration, about which you said a few words in your
last letter. Remember me a thousand times to Anna. What
ever additional success I may have in my designs, I will first
communicate to you. I wish you would allow me to do so.
* The finest mountain in Sweden, which rises from the shores of Lake
Wetter 936’ above the level of the sea . A most beautiful view is com.
manded from its summit.
+ See note to Document 47.
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