Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/058.jpg" pagenum="52"/>
              our parts muſt needs be very obſervable; certain ſpots and other
                <lb/>
              notable things in thoſe parts, being one while diſcernable, and
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              another while not. </s>
              <s>A like variation may alſo be obſerved towards
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              the North and South extremities of the ſame
                <emph type="italics"/>
              Diſcus
                <emph.end type="italics"/>
              (or Surface)
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              according as the Moons poſition is in one or the other Section of
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              its Dragon; For, if it be North, ſome of its parts towards the
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              North are hid, and ſome of thoſe parts towards the South are
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              diſcovered, and ſo on the contrary. </s>
              <s>Now that theſe
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                <arrow.to.target n="marg153"/>
                <lb/>
              ces are really true, is verified by the
                <emph type="italics"/>
              Teleſcope,
                <emph.end type="italics"/>
              for there be in
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              the Moon two remarkable ſpots, one of which, when the Moon
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              is in the meridian, is ſituate to the Northweſt, and the other is
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              almoſt diametrically oppoſite unto it; and the firſt of theſe is
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              ſible even without the
                <emph type="italics"/>
              Teleſcope
                <emph.end type="italics"/>
              ; but the other is not. </s>
              <s>That
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              wards the Northweſt is a reaſonable great ſpot of oval figure,
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              parated from the other great ones; the oppoſite one is leſſe, and
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              alſo ſevered from the biggeſt, and ſituate in a very cleer field; in
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              both theſe we may manifeſtly diſcern the foreſaid variations, and
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              ſee them one after another; now neer the edge or limb of the
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              Lunar
                <emph type="italics"/>
              Diſcus,
                <emph.end type="italics"/>
              and anon remote, with ſo great difference that
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              the diſtance betwixt the Northweſt and the circumference of the
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                <emph type="italics"/>
              Diſcus
                <emph.end type="italics"/>
              is more than twice as great at one time, as at the other;
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              and as to the ſecond ſpot (becauſe it is neerer to the
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              rence) ſuch mutation importeth more, than twice ſo much in the
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              former. </s>
              <s>Hence its manifeſt, that the Moon, as if it were drawn
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              by a magnetick vertue, conſtantly beholds the Terreſtrial Globe
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              with one and the ſame aſpect, never deviating from the ſame.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg151"/>
                <emph type="italics"/>
              All the Earth
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              ſeeth half onely of
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              the Moon, & the
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              half onely of the
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              Moon ſeeth all the
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              Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg152"/>
                <emph type="italics"/>
              From the Earth
                <lb/>
              we ſee more than
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              half the Lunar
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              Globe.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg153"/>
                <emph type="italics"/>
              Two ſpots in the
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              Moon, by which it
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              is perceived that
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              ſhe hath respect to
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              the centre of the
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              Earth in her
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              tion.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SAGR. Oh! when will there be an end put to the new
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              ſervations aud diſcoveries of this admirable Inſtrument?</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>If this ſucceed according to the progreſſe of other great
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              inventions, it is to be hoped, that in proceſſe of time, one may
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              arrive to the ſight of things, to us at preſent not to be imagined.
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                <arrow.to.target n="marg154"/>
                <lb/>
              But returning to our firſt diſcourſe, I ſay for the ſixth reſemblance
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              betwixt the Moon and Earth, that as the Moon for a great part
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              of time, ſupplies the want of the Suns light, and makes the
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              nights, by the reflection of its own, reaſonable clear; ſo the
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              Earth, in recompence, affordeth it when it ſtands in moſt need,
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              by reflecting the Solar rayes, a very cleer illumination, and ſo
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              much, in my opinion, greater than that which cometh from her to
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              us, by how much the ſuperficies of the Earth is greater than that
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              of the Moon.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg154"/>
                <emph type="italics"/>
              Sixthly, The
                <lb/>
              Earth and Moon
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              interchangeably do
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              illuminate.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>Hold there,
                <emph type="italics"/>
              Salviatus
                <emph.end type="italics"/>
              hold there, and permit me the
                <lb/>
              pleaſure of relating to you, how at this firſt hint I have penetrated
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              the cauſe of an accident, which I have a thouſand times thought
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                <arrow.to.target n="marg155"/>
                <lb/>
              upon, but could never find out. </s>
              <s>You would ſay, that the
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              fect light which is ſeen in the Moon, eſpecially when it is horned, </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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