Castelli, Benedetto, Of the mensuration of running waters, 1661

List of thumbnails

< >
111
111 		112
112
113
113 		114
114
115
115 		116
116
117
117 		118
118
119
119 		120
120
< >
page |< < of 137 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="068/01/122.jpg" pagenum="108"/>
                <emph type="italics"/>
              Panaro,
                <emph.end type="italics"/>
              which being confined between Banks, that it might go
                <lb/>
              into P
                <emph type="italics"/>
              o,
                <emph.end type="italics"/>
              this not being neither in its greateſt excreſcenſe, it broke
                <lb/>
              out into the territories of
                <emph type="italics"/>
              Final,
                <emph.end type="italics"/>
              and of
                <emph type="italics"/>
              Ferrara.
                <emph.end type="italics"/>
              And though
                <lb/>
              that might be done, it would thereupon enſue, that there being
                <lb/>
              let into the Chanel of P
                <emph type="italics"/>
              o,
                <emph.end type="italics"/>
              2800, ſquare feet of water (for ſo much
                <lb/>
              we account thoſe of
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              and
                <emph type="italics"/>
              Panaro,
                <emph.end type="italics"/>
              taken together in their
                <lb/>
              greateſt heights) the ſuperficies of it would riſe at leaſt four feet,
                <lb/>
              inſomuch that either it would be requiſite to raiſe its Banks all the
                <lb/>
              way unto the Sea, to the ſame height, which the treaſures of the
                <lb/>
                <emph type="italics"/>
              Indies
                <emph.end type="italics"/>
              would not ſuffice to effect; or elſe there would be a neceſ­
                <lb/>
              ſity of enduring exceſſive Breaches. </s>
              <s>To theſe two Heads are the
                <lb/>
              Arguments reduced, which are largely amplified againſt our opi­
                <lb/>
              nion; and I ſhall anſwer firſt to the laſt, as moſt material.</s>
            </p>
            <p type="main">
              <s>I ſay therefore, that there are three caſes to be conſidered:
                <lb/>
              Firſt, P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
              high, and
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              low. </s>
              <s>Secondly,
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              high, and P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
                <lb/>
              low. </s>
              <s>Thirdly,
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              and P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
              both high together.</s>
            </p>
            <p type="main">
              <s>As to the firſt and ſecond, there is no difficulty in them; for if
                <lb/>
              P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
              ſhall not be at its greateſt height,
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              ſhall ever have a fall
                <lb/>
              into it, and there ſhall need no humane Artifice about the Banks:
                <lb/>
              And if
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              ſhall be low, P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
              ſhall regurgitate and flow up into
                <lb/>
              the Chanel of it; and alſo from thence no inconvenience ſhall
                <lb/>
              follow. </s>
              <s>The third remains, from which there are expected ma­
                <lb/>
              ny miſchiefs; but it is a moſt undoubted truth, that the excreſcen­
                <lb/>
              cies of
                <emph type="italics"/>
              Reno,
                <emph.end type="italics"/>
              as coming from the adjacent
                <emph type="italics"/>
              Appennines
                <emph.end type="italics"/>
              and Rains,
                <lb/>
              are to continue but ſeven, or eight hours at moſt, and ſo would
                <lb/>
              never, or very rarely happen to be at the ſame time with thoſe of
                <lb/>
              P
                <emph type="italics"/>
              o,
                <emph.end type="italics"/>
              cauſed by the melting of the ſnowes of the Alps, at leaſt 400.
                <lb/>
              miles diſtance from thence. </s>
              <s>But becauſe it ſometimes may hap­
                <lb/>
              pen, I reply, that when it cometh to paſs,
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              ſhall not go into
                <lb/>
              P
                <emph type="italics"/>
              o,
                <emph.end type="italics"/>
              but it ſhall have allowed it one or two Vents; namely, into
                <lb/>
              the Chanel of
                <emph type="italics"/>
              Ferrara,
                <emph.end type="italics"/>
              as it hath ever had; and into
                <emph type="italics"/>
              Sanmartina,
                <emph.end type="italics"/>
                <lb/>
              where it runneth at preſent, and wherewith there is no doubt, but
                <lb/>
              that the perſons concerned will be well pleaſed, it being a great
                <lb/>
              benefit to them, to have the water over-flow their grounds once
                <lb/>
              every four or five years, inſtead of ſeeing it anoy them continu­
                <lb/>
              ally. </s>
              <s>Yea, the Vent may be regulated, reſerving for it the Cha­
                <lb/>
              nel in which
                <emph type="italics"/>
              Reno
                <emph.end type="italics"/>
              at preſent runneth; and inſtead of turning it
                <lb/>
              by a Dam at
                <emph type="italics"/>
              la Betta de Chiſlieri,
                <emph.end type="italics"/>
              perhaps, to turn it by help of
                <lb/>
              ſtrong Sluices, that may upon all occaſions be opened and ſhut.
                <lb/>
              </s>
              <s>And for my part, I do not queſtion but that the Proprietors
                <lb/>
              themſelves in
                <emph type="italics"/>
              Sanmartina
                <emph.end type="italics"/>
              would make a Chanel for it; which
                <lb/>
              receiving, and confining it in the time of the Vents, might carry
                <lb/>
              the Sand into the P
                <emph type="italics"/>
              o
                <emph.end type="italics"/>
              of
                <emph type="italics"/>
              Primaro:
                <emph.end type="italics"/>
              Nor need there thence be fear­
                <lb/>
              ed any ſtoppage by Mud and Sand, ſince that it is ſuppoſed that
                <lb/>
              there will but very ſeldom be any neceſſity of uſing it; ſo that </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum