Wilkins, John, A discovery of a new world : or a discourse tending to prove, that 'tis probable there may be another Habitable World in the Moon ; with a discourse concerning the Probability of a Passage thither; unto which is added, a discourse concerning a New Planet, tending to prove, that 'tis probable our earth is one of the Planets

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        <div xml:id="echoid-div155" type="section" level="1" n="43">
            <s xml:id="echoid-s2287" xml:space="preserve">
              <pb o="154" file="0166" n="166" rhead="That the Moon may be a World."/>
            Vertical point. </s>
            <s xml:id="echoid-s2288" xml:space="preserve">Or, which is the more eaſie
              <note position="left" xlink:label="note-0166-01" xlink:href="note-0166-01a" xml:space="preserve">Stevinnius
              Geog. l. 3.
              prop. 3.</note>
            way, when a man ſhall chooſe ſuch a Station,
            where he may at ſome diſtance, diſcern the
            place on which the Cloud does caſt its ſhadow,
            and withal does obſerve, how much both the
            Cloud and the Sun decline from the Vertical
            point. </s>
            <s xml:id="echoid-s2289" xml:space="preserve">From which he may eaſily conclude
            the true Altitude of it, as you may more plain-
            ly conceive, by this following Diagram.</s>
            <s xml:id="echoid-s2290" xml:space="preserve"/>
          <figure number="7">
            <image file="0166-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0166-01"/>
            <s xml:id="echoid-s2291" xml:space="preserve">Where A B is a perpendicular from the cloud,
            G the Station of him that meaſures, D the place
            where the ſhadow of the Cloud doth fall.</s>
            <s xml:id="echoid-s2292" xml:space="preserve"/>
            <s xml:id="echoid-s2293" xml:space="preserve">The inſtrument being directed from the Sta-
            tion G, to the Cloud at A, the perpendicular
            will ſhew the Angle B A G. </s>
            <s xml:id="echoid-s2294" xml:space="preserve">Then letting the
            Sun ſhine through the ſights of your Inſtru-
            ment, the perpendicular of it will give the
            Angle B A D. </s>
            <s xml:id="echoid-s2295" xml:space="preserve">After wards having meaſured
              <note position="left" xlink:label="note-0166-02" xlink:href="note-0166-02a" xml:space="preserve">Pitiſc. Tri-
            the diſtance G D by paces, you may, according
            to the common Rules, find the height B A.</s>
            <s xml:id="echoid-s2296" xml:space="preserve"/>
            <s xml:id="echoid-s2297" xml:space="preserve">But if without making the Obſervation, you
            would know of what Altitude the higheſt of
              <note symbol="*" position="left" xlink:label="note-0166-03" xlink:href="note-0166-03a" xml:space="preserve">Subt. l.
            theſe are found by Obſervation; </s>
            <s xml:id="echoid-s2298" xml:space="preserve"> Gardan an- ſwers, not above two miles; </s>
            <s xml:id="echoid-s2299" xml:space="preserve"> Keplar, not
              <note symbol="*" position="left" xlink:label="note-0166-04" xlink:href="note-0166-04a" xml:space="preserve">Epit. Co-
              per. l. 1. p. 3.</note>
            1600 Paces, or thereabouts.</s>
            <s xml:id="echoid-s2300" xml:space="preserve"/>