Galilei, Galileo, The systems of the world, 1661

Table of figures

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              <s>
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              underſtood what thoſe mutations are, and amongſt what ſtars
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              they ſhould be diſcerned; therefore it would be neceſſary that
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              we in the next place narrowly examine this particular. </s>
              <s>My
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              ving onely found written in general terms that the annual
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              on of the Earth about the Grand Orb, ought not to be
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              ted, becauſe it is not probable but that by means of the ſame
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              there would be diſcoverd ſome apparent mutation in the fixed
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              ſtars, and not hearing ſay what thoſe apparent mutations ought to
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              be in particular, and in what ſtars, maketh me very reaſonably
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              to infer that they who rely upon that general poſition, have not
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              underſtood, no nor poſſibly endeavoured to underſtand, how
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              the buſineſſe of theſe mutations goeth, nor what things thoſe
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              are which they ſay ought to be ſeen. </s>
              <s>And to this judgment I am
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              the rather induced, knowing that the annual motion aſcribed
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              by
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              Copernicus
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              to the Earth, if it ſhould appear ſenſible in the
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              Starry Sphere, is not to make apparent mutations equal in
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              ſpect to all the ſtars, but thoſe appearances ought to be made
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              in ſome greater, in others leſſer, and in others yet leſſer; and
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              laſtly, in others abſolutely nothing at all, by reaſon of the
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              vaſt magnitude that the circle of this annual motion is ſuppoſed
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              to be of. </s>
              <s>As for the mutations that ſhould b ſeen, they are of
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              two kinds, one is the ſaid ſtars changing apparent magnitude,
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              and the other their variation of altitudes in the Meridian. </s>
              <s>Upon
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              which neceſſarily followeth the mutation of riſings and ſettings,
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              and of their diſtances from the Zenith,
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              &c.
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            <p type="margin">
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                <emph type="italics"/>
              Enquiry is made
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              what mutations, &
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              in what ſtars, are to
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              be diſcovered, by
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              means of the
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              nual motion of the
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              Earth.
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            <p type="margin">
              <s>
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                <emph type="italics"/>
              Aſtronomers
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              ving omitted to
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              ſtance what
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              rations thoſe are
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              that may be
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              ved from the
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              nual motion of the
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              Earth, do thereby
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              teſtifie that they
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              never rightly
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              derſtood the ſame.
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            <p type="margin">
              <s>
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              The mutations
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              of the fixed ſtars
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              ought to be in ſome
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              greater, in others
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              leſſer, and in others
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              nothing at all.
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              <s>SAGR. </s>
              <s>Methinks I ſee preparing for me ſuch a skean of theſe
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              revolutions, that I wiſh it may never be my task to diſ-intangle
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              them, for to confeſſe my infirmity to
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              Salviatus,
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              I have
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              times thought thereon, but could never find the ^{*} Lay-band of
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              it, and I ſpeak not ſo much of this which pertains to the fixed
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              ſtars, as of another more terrible labour which you bring to my
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              remembrance by maintaining theſe Meridian Altitudes, Ortive
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              Latitudes and diſtances from the Vertex,
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              &c.
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              And that which
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              puzzleth my brains, ariſeth from what I am now about to tell
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              you.
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              Copernicus
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              ſuppoſeth the Starry Sphere immoveable, and
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              the Sun in the centre thereof immoveable alſo. </s>
              <s>Therefore
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              ry mutation which ſeemeth unto us to be made in the Sun or in
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              the fixed ſtars, muſt of neceſſity befall the Earth and be ous.
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              </s>
              <s>But the Sun riſeth and declineth in our Meridian by a very great
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              arch of almoſt 47. degrees, and by arches yet greater and
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              greatet, varieth its Ortive and Occidual Latitudes in the oblique
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              Horizons. </s>
              <s>Now how can the Earth ever incline and elevate ſo
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              notably to the Sun, and nothing at all to the fixed ſtars, or ſo
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              little, that it is not to be perceived? </s>
              <s>This is that knot which
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              could never get thorow my ^{*} Loom-Combe; and if you ſhall </s>
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