Heron Alexandrinus, Pneumatica, 1899
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    <archimedes>
      <text>
        <body>
          <chap n="proem">
            <p n="1" type="main">
              <s id="id.000002">
                <pb pagenum="4"/>
              </s>
            </p>
            <p n="2">
              <s id="id.000003">Πρὸ δὲ τῶν λέγεσθαι μελλόντων πρῶτον περὶ κενοῦ
                <lb n="proem,18"/>
              διαληπτέον. </s>
              <s id="id.000004">οἱ μὲν γὰρ τὸ καθόλου μηδὲν εἶναι κενὸν
                <lb n="proem,19"/>
              [2διατείνονται]2, οἱ δὲ ἄθρουν μὲν κατὰ φύσιν μηδὲν
                <lb n="proem,20"/>
              εἶναι κενόν, παρεσπαρμένον δὲ κατὰ μικρὰ μόρια τῷ
                <lb n="proem,21"/>
              ἀέρι καὶ τῷ ὑγρῷ καὶ [2τῷ]2 πυρὶ καὶ τοῖς ἄλλοις σώμα­
                <lb n="proem,22"/>
              σιν· οἷς μάλιστα συμφέρεσθαι προσήκει· ἐκ γὰρ τῶν
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              φαινομένων καὶ ὑπὸ τὴν αἴσθησιν πιπτόντων ἐν τοῖς
                <lb n="proem,24"/>
              ἑξῆς δείκνυται τοῦτο συμβαῖνον· %ἐν τῷ μέντοι τὰ
                <lb n="proem,25"/>
              ἀγγεῖα τὰ δοκοῦντα εἶναι τοῖς πολλοῖς κενὰ οὐκ ἔστιν, ὡς
                <lb n="proem,26"/>
              ὑπολαμβάνουσι, κενά, ἀέρος δὲ πλήρη. </s>
              <s id="id.000005">ὁ δὲ ἀήρ ἐστιν,
                <lb n="proem,27"/>
              ὡς τοῖς περὶ φύσεως πραγματευσαμένοις ἀρέσκει, ἐκ
                <lb n="proem,28"/>
              λεπτῶν καὶ μικρομερῶν σωμάτων συνεστηκὼς ἀφανῶν
                <lb n="proem,29"/>
              ἡμῖν ὄντων ὡς ἐπὶ [2τὸ]2 πολύ. </s>
              <s id="id.000006">ἐὰν γοῦν εἰς τὸ δοκοῦν
                <lb n="proem,30"/>
              ἀγγεῖον κενὸν ὑπάρχειν ἐγχέῃ τις ὕδωρ, καθ' ὅσον ἂν
                <lb n="proem,31"/>
              πλῆθος τοῦ ὕδατος εἰς τὸ ἀγγεῖον ἐμπίπτῃ, κατὰ τοσοῦ­
                <lb n="proem,32"/>
              τον πλῆθος ἀὴρ ἐκχωρήσει. </s>
              <s id="id.000007">κατανοήσειε δ' ἄν τις τὸ
                <lb n="proem,33"/>
              λεγόμενον ἐκ τοῦ τοιούτου· ἐὰν γὰρ εἰς ὕδωρ κατα­
                <lb n="proem,34"/>
              στρέψας ἀγγεῖον τὸ δοκοῦν εἶναι κενὸν πιέζῃς εἰς τὸ
                <lb n="proem,35"/>
              κάτω ἀκλινὲς διαφυλάσσων, οὐκ εἰσελεύσεται τὸ ὕδωρ
                <lb n="proem,36"/>
              εἰς αὐτό, κἂν ὅλον αὐτὸ κρύψῃς· ὥστε δῆλον εἶναι,
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              ὅτι σῶμα ὑπάρχων ὁ ἀὴρ οὐκ ἐᾷ παρεισελθεῖν τὸ ὕδωρ
                <lb n="proem,38"/>
              διὰ τὸ πεπληρωκέναι πάντα τὸν ἐν τῷ ἀγγείῳ τόπον.
                <lb n="proem,39"/>
              </s>
              <s id="id.000008">ἐὰν γοῦν τρυπήσῃ τις τὸν πυθμένα τοῦ ἀγγείου, τὸ
                <lb n="proem,40"/>
              μὲν ὕδωρ διὰ τοῦ στόματος εἰς αὐτὸ εἰσελεύσεται, ὁ
                <lb n="proem,41"/>
              δὲ ἀὴρ διὰ τοῦ τρυπήματος ἐξελεύσεται. </s>
              <s id="id.000009">πάλιν δὲ </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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