Galilei, Galileo
,
The systems of the world
,
1661
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tical point in which the Star is, from the Meridian; Moreover,
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after a conſiderable interval of time, the operation muſt be
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peated, and exact account kept of the time that paſſed, truſting
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either to Dials, or to other obſervations of the Stars. </
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<
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>Such an
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Olio
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of Obſervations doth he ſet before you, comparing them with
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ſuch another made by another obſerver in another place with
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nother different inſtrument, and at another time; and from this
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the Authour ſeeks to collect what would have been, the Elevations
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of the Star, and Horizontal Latitudes happened in the time and
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hour of the other firſt obſervations, and upon ſuch a coæquation he
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in the end grounds his account. </
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<
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>Now I refer it to you, what credit
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is to be given to that which is deduced from ſuch like workings.
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<
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>Moreover, I doubt not in the leaſt, but that if any one would
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ture himſelf with ſuch tedious computations, he would find, as in
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thoſe aforegoing, that there were more that would favour the
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verſe party, than the Authour: But I think it not worth the while
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to take ſo much pains in a thing, which is not, amongſt thoſe
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ry ones, by us underſtood.</
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<
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>SAGR. </
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<
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>I am of your Opinion in this particular: But this
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neſſe being environed with ſo many intricacies, uncertainties, and
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errours, upon what confidence have ſo many Aſtronomers
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ly pronounced the new Star to have been ſo high?</
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<
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>SALV. </
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<
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>Upon two ſorts of obſervations moſt plain, moſt eaſie,
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and moſt certain; one only of which is more than ſufficient to aſſure
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us, that it was ſcituate in the Firmament, or at leaſt by a great
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diſtance ſuperiour to the Moon. </
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<
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>One of which is taken from the
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equality, or little differing inequality of its diſtances from the
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Pole, aſwell whilſt it was in the loweſt part of the Meridian, as
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when it was in the uppermoſt: The other is its having
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ly kept the ſame diſtances from certain of the fixed Stars, adjacent
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to it, and particularly from the eleventh of
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Caſſiopea,
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no more
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remote from it than one degree and an half; from which two
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ticulars is undoubtedly inferred, either the abſolute want of
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lax, or ſuch a ſmalneſſe thereof, that it doth aſſure us with very
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expeditious Calculations of its great diſtance from the Earth.</
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<
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>SAGR. </
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<
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>But theſe things, were they not known to this Author?
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</
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<
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>and if he ſaw them, what doth he ſay unto them?</
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<
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>SALV. </
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<
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>We are wont to ſay, of one that having no reply that
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is able to cover his fault, produceth frivolous excuſes,
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cerca di
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taccarſi alle funi del cielo,
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[He ſtrives to take hold of the Cords of
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Heaven;] but this Authour runs, not to the Cords, but to the Spi
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ders Web of Heaven; as you ſhall plainly ſee in our examination
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of theſe two particulars even now hinted. </
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<
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>And firſt, that which
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ſheweth us the Polar diſtances of the Obſervators one by one, I
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have noted down in theſe brief Calculations; For a full </
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