Harriot, Thomas, Mss. 6785

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          <pb file="add_6785_f058" o="58" n="115"/>
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            <p>
              <s xml:space="preserve">[
                <emph style="bf">Commentary:</emph>
              </s>
            </p>
            <p>
              <s xml:space="preserve"> The reference to Pappus is to Commandino's edition of Books III to
                <emph style="it">Mathematicae collectiones</emph>
                <ref id="pappus_1558"> (Pappus </ref>
              . The relevant proposition on page 44 is Proposition IV.11. Harriot's diagram is the same as the one given by Commandino except for his use of lower case letters. </s>
              <lb/>
              <quote xml:lang="lat">
                <s xml:space="preserve"> Theorema XI. Propositio XI.
                  <lb/>
                Sit semicirculus ABC, & inflectatur CBA. ducaturque CD ita, vt CB fit æqualis utrisque simul AB & perpendiculares BE EF ducantur. Dico AF ipsius BE duplæ </s>
              </quote>
              <lb/>
              <quote>
                <s xml:space="preserve"> Let there be a semicircle ABC, curved along CBA. The line CD is drawn so that CB is equal to AB and CD together, and there are drawn the perpendiculars BE and EF. I say that AF is twice BE.</s>
              </quote>
              <s xml:space="preserve">]</s>
            </p>
          </div>
          <head xml:space="preserve" xml:lang="lat"> Utile ad
            <lb/>
          [
            <emph style="bf">Translation: </emph>
          Useful for ]</head>
          <p xml:lang="lat">
            <s xml:space="preserve"> et ad locum
              <lb/>
            de
              <lb/>
            [
              <emph style="bf">Translation: </emph>
            and for the place of ]</s>
          </p>
          <p xml:lang="lat">
            <s xml:space="preserve"> pappus pag.
              <lb/>
            [
              <emph style="bf">Translation: </emph>
            Pappus, page ]</s>
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Impressum