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

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            <p type="main">
              <s>
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              velocity, no imaginable diverſity could be found either in this,
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              or any other experiment whatſoever, as I am anon to tell you.
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              </s>
              <s>Now if in this caſe there appeareth no difference at all, what can
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              be pretended to be ſeen in the ſtone falling from the top of the
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              Tower, where the motion in gyration is not adventitious, and
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              cidental, but natural and eternal; and where the air exactly
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              loweth the motion of the Tower, and the Tower that of the
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              reſtrial Globe? </s>
              <s>have you any thing elſe to ſay,
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              Simplicius,
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              upon
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              this particular?</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>No more but this, that I ſee not the mobility of the
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              Earth as yet proved.</s>
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            <p type="main">
              <s>SALV. </s>
              <s>Nor have I any intention at this time, but onely to
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              ſhew, that nothing can be concluded from the experiments
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              ed by our adverſaries for convincing Arguments: as I think I
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              ſhall prove the others to be.</s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>I beſeech you,
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              Salviatus,
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              before you proceed any
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              ther, to permit me to ſtart certain queſtions, which have been
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              rouling in my fancy all the while that you with ſo much patience
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              and equanimity, was minutely explaining to
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              Simplicius
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              the
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              riment of the Ship.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>We are here met with a purpoſe to diſpute, and it's fit
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              that every one ſhould move the difficulties that he meets withall,
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              for this is the way to come to the knowledg of the truth.
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              </s>
              <s>Therefore ſpeak freely.</s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>If it be true, that the
                <emph type="italics"/>
              impetus
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              wherewith the ſhip moves,
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              doth remain indelibly impreſſ'd in the ſtone, after it is let fall from
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              the Maſt; and if it be farther true, that this motion brings no
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              pediment or retardment to the motion directly downwards,
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              tural to the ſtone: it's neceſſary, that there do an effect enſue of
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                <arrow.to.target n="marg321"/>
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              a very wonderful nature. </s>
              <s>Let a Ship be ſuppoſed to ſtand ſtill,
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              and let the time of the falling of a ſtone from the Maſts Round-top
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              to the ground, be two beats of the pulſe; let the Ship afterwards
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              be under ſail, and let the ſame ſtone depart from the ſame place,
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              and it, according to what hath been premiſed, ſhall ſtill take up
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              the time of two pulſes in its fall, in which time the ſhip will have
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              run, ſuppoſe, twenty yards; To that the true motion of the ſtone
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              will be a tranſverſe line, conſiderably longer than the firſt ſtraight
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              and perpendicular line, which is the length of the ^{*} Maſt, and yet
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                <arrow.to.target n="marg322"/>
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              nevertheleſs the ^{*} ſtone will have paſt it in the ſame time. </s>
              <s>Let
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              it be farther ſuppoſed, that the Ships motion is much more
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              rated, ſo that the ſtone in falling ſhall be to paſs a tranſverſe line
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              much longer than the other; and in ſum, increaſing the Ships
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                <arrow.to.target n="marg323"/>
                <lb/>
              locity as much as you will, the falling ſtone ſhall deſcribe its
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              verſe lines ſtill longer and longer, and yet ſhall paſs them all in
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              thoſe ſelf ſame two pulſes. </s>
              <s>And in this faſhion, if a Canon were </s>
            </p>
          </chap>
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