Harriot, Thomas, Mss. 6787

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          <pb file="add_6787_f361" o="361" n="720"/>
          <div type="page_commentary" level="0" n="0">
            <p>
              <s xml:space="preserve">[
                <emph style="bf">Commentary:</emph>
              </s>
            </p>
            <p>
              <s xml:space="preserve"> The inclusion of a page number confirms that Harriot was using Commandino's edition of
                <emph style="it">Apollonii Pergaei conicorum libri quattuor</emph>
                <ref id="apollonius_1566"> (Apollonius </ref>
              . Proposition 37 gives a property of a tangent to a hyperbola or ellipse or circle. </s>
              <lb/>
              <quote>
                <s xml:space="preserve"> I.37 If a straight line touching an hyperbola or ellipse or circumference of a circle meets the diameter, and from the point of contact to the diameter a straight line is dropped as ordinate, then the straight line cut off by the ordinate from the centre of the section with the straight line cut off by the tangent from the centre of the section will contain an area equal to the square on the radius of the section, and with the straight line between the ordinate and the tangent will contain an area having the ratio to the square on the ordinate which the transverse has to the upright.</s>
              </quote>
              <s xml:space="preserve">]</s>
            </p>
          </div>
          <head xml:space="preserve" xml:lang="lat"> lib. 1.
            <lb/>
          Appol. pag. 27.
            <lb/>
          prop.
            <lb/>
          [
            <emph style="bf">Translation: </emph>
          Book I, Apollonius, page 27, Proposition ]</head>
          <p xml:lang="lat">
            <s xml:space="preserve"> Dico
              <lb/>
            [
              <emph style="bf">Translation: </emph>
            I say ]</s>
          </p>
          <p xml:lang="lat">
            <s xml:space="preserve"> In
              <lb/>
            [
              <emph style="bf">Translation: </emph>
            In a ]</s>
          </p>
          <p xml:lang="lat">
            <s xml:space="preserve"> In elipsi &
              <lb/>
            [
              <emph style="bf">Translation: </emph>
            In an ellipse and ]</s>
          </p>
        </div>
      </text>
    </echo>
Impressum