Heron Alexandrinus, Mechanica, 1900

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    <archimedes>
      <text>
        <body>
          <chap n="1">
            <p n="19">
              <s id="A18-1|19|06">
                <pb n="49"/>
              عَلامَة ٓe وَ۪لَكِنَ إِلى ما يَلي عَلامَة ٓت </s>
              <s id="A18-1|19|07">وَ۪كَ۪ذٰلِكَ نُدَبِّرُها بِ۪نَقلِها إِلى اَل۪جِهَة اَل۪أُخرا فَ۪نَعمَل أَعضاء اَل۪أَجسام مُتَخالِفَة </s>
              <s id="A18-1|19|08">فَ۪أَمّا كَيفَ نَعمَل لِ۪صَفيحَة ما أَسناناً تَكون مَعلومَة اَل۪كَثرَة وَ۪تَتَراكِب عَلى لَولَب مَعلوم فَ۪إِنّا نُبَيِّن ذٰلِكَ لِ۪أَنَّ ذٰلِكَ كَثير اَل۪مَنفَعَة فيما نُريد اَن نُخَبِّر بِهِ بَعدَ هٰذا </s>
              <s id="A18-1|19|09">فَ۪ل۪يَكُن اَل۪لَولَب عَلى ٓآب وَ۪ل۪تَكُن اَل۪دَوائِر اَل۪لَولَبِيَّة غَير عَدَسِيَّة وَ۪ل۪تَكُن أَبعاد هٰذِهِ اَل۪دَوائِر اَل۪لَولَبِيَّة قَدر ٓغٓد ٓدٓe ٓeٓز فَ۪تَكون هٰذِهِ اَل۪ثَلَثَة اَل۪خُطوط مُتَساوِيَة فَ۪نُريد اَن نَجِد صَفيحَة تَكون ذات عِشرين سِنّاً تَتَراكِب عَلى اَل۪دَوائِر اَل۪لَولَبِيَّة اَلَّتي عَلى اَل۪لَولَب </s>
              <s id="A18-1|19|10">فَ۪ل۪نَفرِض دائِرَة ما تَكون في عُظمِها عَلى اَل۪قَدر اَلَّذي نُريد وَ۪هِيَ دائِرَة ٓهٓتٓك وَ۪ل۪يَكُن مَركَزُها عَلى عَلامَة ٓل وَ۪نُقَسِّم مُحيط اَل۪دائِرَة بِ۪عِشرين جُزأاً مُتَساوِيَة وَ۪ل۪يَكُن أَحَد هٰذِهِ اَل۪عِشرين جُزأاً قَوس ٓهٓت </s>
              <s id="A18-1|19|11">وَ۪ل۪نَصِل عَلامات ٓهٓت ٓلٓت ٓلٓه وَ۪ل۪نَفرِض خَطّ ٓهٓم مُساوِياً لِ۪أَحَد خُطوط ٓغٓد ٓدٓe ٓeٓز وَ۪ل۪نُخرِج مِن عَلامَة ٓل خَطّاً مُوازِياً لِ۪خَطّ ٓهٓت وَ۪هُوَ خَطّ ٓلٓن وَ۪ل۪يَكُن هٰذا اَل۪خَطّ مُساوِياً لِ۪خَطّ ٓهٓم وَ۪ل۪نَصِل عَلامَتَي ٓمٓن بِ۪خَطّ ٓمٓن فَ۪إِنَّهُ يُقاطِع خَطّ ٓلٓت فَ۪ل۪يَكُن اَل۪تَقاطُع عَلى عَلامَة ٓس </s>
              <s id="A18-1|19|12">وَ۪نَرسُم عَلى مَركَز ٓل بِ۪بُعد ٓلٓس </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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