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

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              <s>
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              differs in ſpecies from a right motion? </s>
              <s>If it be violent, how is it
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              that a fiery dart flying upwards, ſparkling over our heads at a
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              ſtance from the Earth, but not turning about,
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              &c.
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                <arrow.to.target n="marg420"/>
              </s>
            </p>
            <p type="margin">
              <s>
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                <emph type="italics"/>
              Of the mixt
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              tion we ſee not the
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              part that is
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              lar, becauſe we
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              partake thereof.
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              </s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>It hath been ſaid already very often, that the circular
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              motion is natural to the whole, and to its parts, whilſt they are in
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              perfect diſpoſure, and the right is to reduce to order the parts
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              diſordered; though indeed it is better to ſay, that neither the
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              parts ordered or diſordered ever move with a right motion, but
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              with one mixed, which might as well be averred meerly circular:
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              but to us but one part onely of this motion is viſible and
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              vable, that is, the part of the right, the other part of the circular
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              being imperceptible to us, becauſe we partake thereof. </s>
              <s>And this
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              anſwers to the rays which move upwards, and round about, but we
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              cannot diſtinguiſh their circular motion, for that, with that we our
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              ſelves move alſo. </s>
              <s>But I believe that this Author never thought
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              of this mixture; for you may ſee that he reſolutely ſaith, that the
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              rays go directly upwards, and not at all in gyration.</s>
            </p>
            <p type="main">
              <s>SIMP.
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              Quare centrum ſphære delapſæ ſub Æquatore ſpiram
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              ſcribit in ejus plano: ſub aliis parallelis ſpiram deſcribit in cono?
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              </s>
              <s>ſub Polo deſcendit in axe lineam gyralem, decurrens in ſuperficie
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              cylindricâ conſignatam
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              ? (In Engliſh to this purpoſe:) Why doth
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              the centre of a falling Globe under the Æquinoctial deſcribe a
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              ſpiral line in the plane of the Æquator; and in other parallels
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              a ſpiral about a Cone; and under the Pole deſcend in the
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              axis deſcribing a gyral line, running in a Cylindrical
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              cies?</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Becauſe of the lines drawn from the Centre to the
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              cumference of the ſphere, which are thoſe by which
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              graves
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              fcend, that which terminates in the Æquinoctial deſigneth a
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              cle, and thoſe that terminate in other parallels deſcribe conical
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              ſuperficies; now the axis deſcribeth nothing at all, but continueth
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              in its own being. </s>
              <s>And if I may give you my judgment freely, I
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              will ſay, that I cannot draw from all theſe Queries, any ſenſe that
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              interfereth with the motion of the Earth; for if I demand of this
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              Author, (granting him that the Earth doth not move) what would
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              follow in all theſe particulars, ſuppoſing that it do move, as
                <emph type="italics"/>
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              pernicus
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              will have it; I am very confident, that he would ſay that
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              all theſe effects would happen, that he hath objected, as
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              niences to diſprove its mobility: ſo that in this mans opinion
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              ceſſary conſequences are accounted abſurdities: but I beſeech
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              you, if there be any more, diſpatch them, and free us ſpeedily
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              from this weariſom task.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>In this which follows he oppoſes
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              Copernicus
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              & his Sectators,
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              who affirm, that the motion of the parts ſeparated from their whole,
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              is onely to unite themſelves to their whole; but that the moving </s>
            </p>
          </chap>
        </body>
      </text>
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