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

List of thumbnails

< >
91
91 		92
92
93
93 		94
94
95
95 		96
96
97
97 		98
98
99
99 		100
100
< >
page |< < of 701 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/137.jpg" pagenum="119"/>
                <emph type="italics"/>
              mum mobile
                <emph.end type="italics"/>
              ) therefore the Earth moving about its own centre,
                <lb/>
              being placed in the middle, muſt of neceſſity have two byaſſes,
                <lb/>
              and foreſlow. </s>
              <s>But if this were ſo, it would follow, that there
                <lb/>
              ſhould be a variation in the riſing and ſetting of the fixed Stars,
                <lb/>
              which we do not perceive to be done: Therefore the Earth doth
                <lb/>
              not move,
                <emph type="italics"/>
              &c.
                <emph.end type="italics"/>
              Here is the Paralogiſme, and to diſcover it, I will
                <lb/>
              argue with
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              in this manner. </s>
              <s>Thou ſaiſt, oh
                <emph type="italics"/>
              Ariſtotle,
                <emph.end type="italics"/>
                <lb/>
              that the Earth placed in the middle of the World, cannot move
                <lb/>
              in it ſelf (
                <emph type="italics"/>
              i. </s>
              <s>e.
                <emph.end type="italics"/>
              upon its own
                <emph type="italics"/>
              axis
                <emph.end type="italics"/>
              ) for then it would be requiſite
                <lb/>
              to allow it two byaſſes; ſo that, if it ſhould not be neceſſary to
                <lb/>
              allow it more than one Byas onely, thou wouldeſt not then hold
                <lb/>
              it impoſſible for it to move onely with that one; for thou would'ſt
                <lb/>
              unneceſſarily have conſined the impoſſibility to the plurality of
                <lb/>
              byaſſes, if in caſe it had no more but one, yet it could not move
                <lb/>
              with that. </s>
              <s>And becauſe that of all the moveables in the World,
                <lb/>
              thou makeſt but one alone to move with one ſole byas; and all
                <lb/>
              the reſt with more than one; and this ſame moveable thou
                <lb/>
              firmeſt to be the firſt Sphere, namely, that by which all the
                <lb/>
              ed and erratick Stars ſeem harmoniouſly to move from Eaſt to
                <lb/>
              Weſt, if in caſe the Earth may be that firſt Sphere, that by
                <lb/>
              ving with one by as onely, may make the Stars appear to move
                <lb/>
              from Eaſt to Weſt, thou wilt not deny them it: But he that
                <lb/>
              firmeth, that the Earth being placed in the midſt of the World,
                <lb/>
              moveth about its own Axis, aſcribes unto it no other motion,
                <lb/>
              ſave that by which all the Stars appear to move from Eaſt to Weſt;
                <lb/>
              and ſo it cometh to be that firſt Sphere, which thou thy ſelf
                <lb/>
              knowledgeſt to move with but one by as onely. </s>
              <s>It is therefore
                <lb/>
              ceſſary, oh
                <emph type="italics"/>
              Ariſtotle,
                <emph.end type="italics"/>
              if thou wilt conclude any thing, that thou
                <lb/>
              demonſtrate, that the Earth being placed in the midſt of the
                <lb/>
              World, cannot move with ſo much as one by as onely; or elſe,
                <lb/>
              that much leſſe can the firſt Sphere have one ſole motion; for
                <lb/>
              therwiſe thou doeſt in thy very Sillogiſme both commit the falacy,
                <lb/>
              and detect it, denying, and at that very time proving the ſame
                <lb/>
              thing. </s>
              <s>I come now to the ſecond Poſition, namely, of thoſe
                <lb/>
              who placing the Earth far from the midſt of the Univerſe, make
                <lb/>
              it moveable about the ſame; that is, make it a Planet and
                <lb/>
              tick Star; againſt which the argument is directed, and as to
                <lb/>
              form is concludent, but faileth in matter. </s>
              <s>For it being granted,
                <lb/>
              that the Earth doth in that manner move, and that with two
                <lb/>
              aſſes, yet doth it not neceſſarily follow that though it were ſo,
                <lb/>
              it ſhould make alterations in the riſings and ſettings of the fixed
                <lb/>
              Stars, as I ſhall in its proper place declare. </s>
              <s>And here I could
                <lb/>
              gladly excuſe
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              ; rather I could highly applaud him for
                <lb/>
              ving light upon the moſt ſubtil argument that could be produced
                <lb/>
              againſt the
                <emph type="italics"/>
              Copernican Hypotheſis
                <emph.end type="italics"/>
              ; and if the objection be </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum