Galilei, Galileo, The systems of the world, 1661

Table of figures

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              bed in the plain of the Ecliptick, and this we will divide into
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              four equal parts with the two diameters
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              Capricorn Cancer,
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              and
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              Libra Aries,
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              which, at the ſame time, ſhall repreſent unto us the
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              four Cardinal points, that is, the two Solſtices, and the two
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              quinoctials; and in the centre of that circle we will place the
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              Sun O, fixed and immoveable.</s>
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              A plain Scheme
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              repreſenting the
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              Copernican
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              theſis, and its
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              ſequences.
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              <s>Let us next draw about the four points, Capricorn, Cancer,
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              Libra and Aries, as centres, four equal circles, which repreſent
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              unto us the Earth placed in them at four ſeveral times of the
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              year. </s>
              <s>The which, with its centre, in the ſpace of a year, paſſeth
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              through the whole circumference, Capricorn, Aries, Cancer,
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              bra, moving from Eaſt to Weſt, that is, according to the order
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              of the Signes. </s>
              <s>It is already manifeſt, that whilſt the Earth is in
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              Capricorn, the Sun will appear in Cancer, and the Earth moving
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              along the arch Capricorn Aries, the Sun will ſeem to move along
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              the arch Cancer Libra, and in ſhort, will run thorow the Zodiack
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              according to the order of the Signes, in the ſpace of a year; and
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              by this firſt aſſumption, without all queſtion, full ſatisfaction is
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              given for the Suns apparent annual motion under the Ecliptick.
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              <s>Now, coming to the other, that is, the diurnal motion of the
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              Earth in it ſelf, it is neceſſary to eſtabliſh its Poles and its Axis,
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              the which muſt be underſtood not to be erect perpendicularly
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              upon the plain of the Ecliptick, that is, not to be parallel to the
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              Axis of the grand Orb, but declining from a right angle 23
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              grees and an half, or thereabouts, with its North Pole towards </s>
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