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

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              <s>
                <pb xlink:href="040/01/420.jpg" pagenum="398"/>
              other eminent aereal alteration that might occaſion the ſame; of
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              which diſturbance of the Air we ought to make great account
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              in other accidents, and to take it for a third and accidental
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              cauſe, able to alter very much the obſervation of the effects
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              pending on the ſecondary and more eſſential cauſes. </s>
              <s>And it is
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              not to be doubted, but that impetuous windes, continuing to
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              blow, for example, from the Eaſt, they ſhall retein the Waters
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              and prohibit the reflux or ebbing; whereupon the ſecond and
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              third reply of the flux or tide overtaking the former, at the
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              hours prefixed, they will ſwell very high; and being thus born
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              up for ſome dayes, by the ſtrength of the Winds, they ſhall riſe
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              more than uſual, making extraordinary inundations.</s>
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              <s>We ought alſo, (and this ſhall ſerve for a ſeventh Probleme)
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              to take notice of another cauſe of motion dependant on the
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              great abundance of the Waters of great Rivers that diſcharge </s>
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              <s>
                <arrow.to.target n="marg771"/>
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              themſelves into Seas of no great capacity, whereupon in the
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              Straits or
                <emph type="italics"/>
              Boſphori
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              that communicate with thoſe Seas, the Waters
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              are ſeen to run always one way: as it happeneth in the
                <emph type="italics"/>
                <lb/>
              an Boſphorus
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              below
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              Conſtantinople,
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              where the water alwayes
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              runneth from the
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              Black-Sea,
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              towards the
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              Propontis
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              : For in the
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              ſaid
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              Black-Sea
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              by reaſon of its ſhortneſſe, the principal cauſes
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              of ebbing and flowing are but of ſmall force. </s>
              <s>But, on the
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              trary, very great Rivers falling into the ſame, thoſe huge
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              fluxions of water being to paſſe and diſgorge themſelves by the
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                <arrow.to.target n="marg772"/>
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              the Straight, the ^{*}courſe is there very notable and alwayes
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              wards the South. </s>
              <s>Where moreover we ought to take notice, that
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              the ſaid Straight or Channel, albeit very narrow, is not ſubject
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              to perturbations, as the Straight of
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              Soilla
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              and
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              Carybdis
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              ; for that
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              that hath the
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              Black-Sea
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              above towards the North, and the
                <emph type="italics"/>
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              pontis,
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              the
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              Ægean,
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              and the
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              Mediterranean
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              Seas joyned unto it,
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              though by a long tract towards the South; but now, as we have
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              obſerved, the Seas, though of never ſo great length, lying North
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              and South, are not much ſubject to ebbings and flowings; but
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              becauſe the
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              Sicilian
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              Straight is ſituate between the parts of the
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              Mediterrane diſtended for a long tract or diſtance from Weſt to
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              Eaſt, that is, according to the courſe of the fluxes and refluxes,
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              therefore in this the agitations are very great; and would be
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              much more violent between
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              Hercules Pillars,
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              in caſe the
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              Straight of
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              Gibraltar
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              did open leſſe; and thoſe of the Straight of
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                <emph type="italics"/>
              Magellanes
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              are reported to be extraordinary violent.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg771"/>
                <emph type="italics"/>
              The cauſe why,
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              in ſome narrow
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              Channels, we ſee
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              the Sea-waters run
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              alwayes one way.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg772"/>
              * Or current.</s>
            </p>
            <p type="main">
              <s>This is what, for the preſent, cometh into my mind to ſay unto
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              you about the cauſes of this firſt period diurnal of the Tide, and
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              its various accidents, touching which, if you have any thing to
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              offer, you may let us hear it, that ſo we may afterwards
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              ceed to the other two periods, monethly and annual.</s>
            </p>
          </chap>
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