Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

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            <p type="main">
              <s>
                <pb xlink:href="040/01/280.jpg" pagenum="260"/>
              caſe is not to be ſuppoſed. </s>
              <s>But becauſe (obſerve well) the diſtance
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              of the Firmament, in relation to the ſmallneſſe of the Earth, as
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              hath been ſaid, is to be accounted, as if it were infinite; therefore
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              the angle conteined betwixt the two rayes, that being drawn from
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              the points A and E, go to determine in a fixed Star, is eſteemed
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              nothing, and thoſe rayes held to be two parallel lines; and
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              fore it is concluded, that then only may the New Star be affirmed
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              to have been in the Firmament, when from the collating of the
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              Obſervations made in divers places, the ſaid angle is, by
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              tion, gathered to be inſenſible, and the lines, as it were, parallels.
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              </s>
              <s>But if the angle be of a conſiderable quantity, the New Star muſt
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              of neceſſity be lower than thoſe fixed; and alſo than the Moon, in
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              caſe the angle A B E ſhould be greater than that which would be
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              made in the Moons centre.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>Then the remoteneſſe of the Moon is not ſo great, that
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              a like angle ſhould be ^{*}inſenſible in
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                <arrow.to.target n="marg511"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg511"/>
              * Imperceptible.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>No Sir; nay it is ſenſible, not onely in the Moon, but
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              in the Sun alſo.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>But if this be ſo, it's poſſible that the ſaid angle may
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              be obſerved in the New Star, without neceſſitating it to be
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              our to the Sun, aſwell as to the Moon.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>This may very well be, yea, and is in the preſent caſe,
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              as you ſhall ſee in due place; that is, when I ſhall have made plain
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              the way, in ſuch manner that you alſo, though not very perfect in
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                <emph type="italics"/>
              Aſtronomical
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              calculations, may clearly ſee, and, as it were, with
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              your hands feel how that this Authour had it more in his eye to
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              write in complacency of the
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              Peripateticks,
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              by palliating and
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              ſembling ſundry things, than to eſtabliſh the truth, by producing
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              them with naked ſincerity: therefore let us proceed forwards. </s>
              <s>By
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              the things hitherto ſpoken, I ſuppoſe that you comprehend very
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              well how that the diſtance of the new Star can never be
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              made ſo immenſe, that the angle ſo often named ſhall wholly
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              appear, and that the two rayes of the Obſervators at the places
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              A and E, ſhall become altogether parallels: and you may
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              quently comprehend to the full, that if the calculations ſhould
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              collect from the obſervations, that that angle was totally null, or
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              that the lines were truly parallels, we ſhould be certain that the
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              obſervations were at leaſt in ſome ſmall particular erroneous:
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              But, if the calculations ſhould give us the ſaid lines to be
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              ted not only to equidiſtance, that is, ſo as to be parallel, but to
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              have paſt beyond that terme, and to be dilated more above than
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              below, then muſt it be reſolutely concluded, that the obſervations
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              were made with leſſe accurateneſſe, and in a word, to be
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              ous; as leading us to a manifeſt impoſſibility. </s>
              <s>In the next place,
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              you muſt believe me, and ſuppoſe it for true, that two right lines </s>
            </p>
          </chap>
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