Galilei, Galileo, Discourse concerning the natation of bodies, 1663

Page concordance

< >
Scan Original
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
< >
page |< < of 77 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="424"/>
              but that the Winde oppoſite to the South may do the ſame, but only
                <lb/>
              affirmeth that the force of the Water prevailing over the
                <lb/>
              Wind, the Bark ſhall move towards the South: and ſaith no more
                <lb/>
              than is true. </s>
              <s>And juſt thus when
                <emph type="italics"/>
              Archimedes
                <emph.end type="italics"/>
              ſaith, that the Gravity
                <lb/>
              of the Water prevailing over that by which the moveable deſcends to
                <lb/>
              the Bottom, ſuch moveable ſhall be raiſed from the Bottom to the
                <lb/>
              face alledgeth a very true Cauſe of ſuch an Accident, nor doth he
                <lb/>
              firm or deny that there is, or is not, a vertue contrary to Gravity, called
                <lb/>
              by ſome Levity, that hath alſo a power of moving ſome Matters up
                <lb/>
              wards. </s>
              <s>Let therefore the Weapons of
                <emph type="italics"/>
              Signor Buonamico
                <emph.end type="italics"/>
              be directed
                <lb/>
                <arrow.to.target n="marg1439"/>
                <lb/>
              gainſt
                <emph type="italics"/>
              Plato,
                <emph.end type="italics"/>
              and other
                <emph type="italics"/>
              Ancients,
                <emph.end type="italics"/>
              who totally denying
                <emph type="italics"/>
              Levity,
                <emph.end type="italics"/>
              and taking
                <lb/>
              all Bodies to be grave, ſay that the Motion upwards is made, not
                <lb/>
              from an intrinſecal Principle of the Moveable, but only by the
                <lb/>
              pulſe of the
                <emph type="italics"/>
              Medium
                <emph.end type="italics"/>
              ; and let
                <emph type="italics"/>
              Archimedes
                <emph.end type="italics"/>
              and his Doctrine eſcape
                <lb/>
              him, ſince he hath given him no Cauſe of quarelling with him
                <lb/>
              But if this Apologie, produced in defence of
                <emph type="italics"/>
              Archimedes,
                <emph.end type="italics"/>
              ſhould ſeen
                <lb/>
              to ſome inſufficient to free him from the Objections and Arguments
                <lb/>
              produced by
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              againſt
                <emph type="italics"/>
              Plato,
                <emph.end type="italics"/>
              and the other
                <emph type="italics"/>
              Ancients,
                <emph.end type="italics"/>
              as if they
                <lb/>
              did alſo fight againſt
                <emph type="italics"/>
              Archimedes,
                <emph.end type="italics"/>
              alledging the Impulſe of the Water
                <lb/>
                <arrow.to.target n="marg1440"/>
                <lb/>
              as the Cauſe of the ſwimming of ſome Bodies leſs grave than it, I would
                <lb/>
              not queſtion, but that I ſhould be able to maintaine the Doctrine of
                <lb/>
                <emph type="italics"/>
              Plato
                <emph.end type="italics"/>
              and thoſe others to be moſt true, who abſolutely deny Levity,
                <lb/>
              and affirm no other Intrinſecal Principle of Motion to be in
                <lb/>
              tary Bodies ſave only that towards the Centre of the Earth, nor no
                <lb/>
                <arrow.to.target n="marg1441"/>
                <lb/>
              other Cauſe of moving upwards, ſpeaking of that which hath the
                <lb/>
              ſemblance of natural Motion, but only the repulſe of the
                <emph type="italics"/>
              Medium,
                <emph.end type="italics"/>
              ſluid,
                <lb/>
              and exceeding the Gravity of the Moveable: and as to the Reaſons
                <lb/>
              of
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              on the contrary, I believe that I could be able fully to
                <lb/>
                <arrow.to.target n="marg1442"/>
                <lb/>
              anſwer them, and I would aſſay to do it, if it were abſolutely
                <lb/>
              ry to the preſent Matter, or were it not too long a Digreſſion for this
                <lb/>
              ſhort Treatiſe. </s>
              <s>I will only ſay, that if there were in ſome of our
                <lb/>
              mentary Bodies an Intrinſecall Principle and Naturall Inclination
                <lb/>
              to ſhun the Centre of the Earth, and to move towards the Concave
                <lb/>
              of the Moon, ſuch Bodies, without doubt, would more ſwiftly aſcend
                <lb/>
              through thoſe
                <emph type="italics"/>
              Mediums
                <emph.end type="italics"/>
              that leaſt oppoſe the Velocity of the Moveable,
                <lb/>
              and theſe are the more tenuous and ſubtle; as is, for example, the
                <lb/>
              Air in compariſon of the Water, we daily proving that we can with
                <lb/>
                <arrow.to.target n="marg1443"/>
                <lb/>
              farre more expeditious Velocity move a Hand or a Board to and
                <lb/>
              gain in one than in the other: nevertheleſs, we never could finde any
                <lb/>
              Body, that did not aſcend much more ſwiftly in the water than in the
                <lb/>
                <arrow.to.target n="marg1444"/>
                <lb/>
              Air. </s>
              <s>Yea of Bodies which we ſee continually to aſcend in the Water,
                <lb/>
              there is none that having arrived to the confines of the Air, do not
                <lb/>
              ly loſe their Motion; even the Air it ſelf, which riſing with great
                <lb/>
              lerity through the Water, being once come to its Region it loſeth all</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum