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Gentleman's Magazine vol.12 p.374, 1752:-
SIR,
MR G.S. in his account of Long Meg &c. - being of
the same opinion as others concerning Stonehenge,
that they are a composition, by the improbability of being
brought there by carriages, and the superior difficulty of
raising them, has induc'd me to make the following
observations, to evince the practicableness of these works,
though so stupendous.
In the history of New-Spain we have an account of
stones of a prodigious size brought 12 and 15 leagues,
through vallies and over mountains, by main strength, and
without the use of iron. And in Tindal's translation
of Rapin is as follows; "during the march
Caesar, receiving the melancholy news that his fleet
was destroyed by a violent storm." - To prevent the like
misfortune again, as soon as the ships were refitted, he
employs his soldiers night and day, to draw them by strength
of arms into the middle of his camp. This work
notwithstanding the difficulty of it, was finished in 10
days.
"The said ships carried 150 men each from which their
tonnage may be inferr'd."
The great bells of Moscow, Pekin, Nanking, and
Erfurd in Upper Saxony, are also instances of
vast weights being moveable. And I am of opinion that the
rocking stone on the altar at Stonehenge, which, by
my mensuration, weighs upwards of 16 ton could be replaced
(if the uprights were whole) by the same means as the great
bell at Christ Church, Oxford, which weighs about 8
ton, was raised to the great height it hangs.
I have been casually inform'd, that we have 3 cranes about
London, that will purchase 10 ton each, and do verily
believe, that if any publick work required it, we are as
capable of erecting a Stonehenge, as the
Druids were
Yours &c. MECHANICUS.
P.S. The pyramids of Egypt, I tahe to be an
incontestable proof of what I advance, viz. The
practicableness of bringing and raising stones of an amazing
size.
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