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

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          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/417.jpg" pagenum="395"/>
              flowing is wholly annihilated, or at leaſt very much obſcured.
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              </s>
              <s>I paſſe by the continual alteration of the air, which diſquieting
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              the water, permits us not to come to a certainty, whether any,
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              though but ſmall, encreaſe or abatement of half an inch, or
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              leſſe, do reſide in the Straights, or receptacles of water not
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              bove a degree or two in length.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg764"/>
                <emph type="italics"/>
              Reaſons
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              ed of the
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              lar accidents
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              ſerved in the
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              bings and flowings.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg765"/>
                <emph type="italics"/>
              Second cauſes
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              why in ſmall Seas
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              and in Lakes there
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              are no ebbings and
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              flowings.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>I come in the ſecond place to reſolve the queſtion, why, there
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                <arrow.to.target n="marg766"/>
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              not reſiding any vertue in the primary principle of commoving
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              the waters, ſave onely every twelve hours, that is to ſay, once
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              by the greateſt velocity, and once by the greateſt tardity of
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              motion; the ebbings and flowings ſhould yet nevertheleſſe
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              pear to be every ſix hours. </s>
              <s>To which is anſwered, that this
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              termination cannot any wayes be taken from the primary cauſe
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              onely; but there is a neceſſity of introducing the ſecondary
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              ſes, as namely the greater or leſſe length of the Veſſels, and
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              the greater or leſſe depth of the waters in them conteined.
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              </s>
              <s>Which cauſes although they have not any operation in the
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              ons of the waters, thoſe operations belonging to the ſole
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              ry cauſe, without which no ebbing or flowing would happen,
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              yet nevertheleſſe they have a principal ſhare in determining the
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              times or periods of the reciprocations, and herein their
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              ence is ſo powerful, that the primary cauſe muſt of force give
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              way unto them. </s>
              <s>The period of ſix hours therefore is no more
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              proper or natural than thoſe of other intervals of times, though
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              indeed its the moſt obſerved, as agreeing with our Mediterrane,
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              which was the onely Sea that for many Ages was navigated:
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              though neither is that period obſerved in all its parts; for
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              that in ſome more anguſt places, ſuch as are the
                <emph type="italics"/>
                <lb/>
              ſpont,
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              and the
                <emph type="italics"/>
              Ægean
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              Sea, the periods are much ſhorter,
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              and alſo very divers amongſt themſelves; for which
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              ſities, and their cauſes incomprehenſible to
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              Ariſtotle,
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              ſome
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              ſay, that after he had a long time obſerved it upon ſome
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              cliffes of
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              Negropont,
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              being brought to deſperation, he threw
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              himſelf into the adjoyning
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              Euripus,
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              and voluntarily drowned
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              himſelf.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg766"/>
                <emph type="italics"/>
              The reaſon
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              ven, why the
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              bings and flowings,
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              for the moſt part,
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              are every ſix
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              hours.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>In the third place we have the reaſon ready at hand, whence
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                <arrow.to.target n="marg767"/>
                <lb/>
              it commeth to paſſe, that ſome Seas, although very long, as is
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              the Red Sea, are almoſt altogether exempt from Tides, which
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              happeneth becauſe their length extendeth not from Eaſt to
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              Weſt, but rather tranſverſly from the Southeaſt to the
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              weſt; but the motions of the Earth going from Weſt to Eaſt;
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              the impulſes of the water, by that means, alwayes happen to fall
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              in the Meridians, and do not move from parallel to parallel;
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              inſomuch that in the Seas that extend themſelves athwart
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              wards the Poles, and that the contrary way are narrow, there is </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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