Heron Alexandrinus, Pneumatica, 1899

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    <archimedes>
      <text>
        <body>
          <chap n="proem">
            <p n="2">
              <s id="id.000023">
                <pb pagenum="12"/>
                <lb n="proem,123"/>
              αὐτοῦ πάντα καὶ μεταβάλλει, ἐκ τούτων δῆλον. </s>
              <s id="id.000024">καὶ ἐκ
                <lb n="proem,124"/>
              τῶν ἀναθυμιάσεων δὲ τῶν ἀπὸ τῆς γῆς γινομένων
                <lb n="proem,125"/>
              μεταβάλλει τὰ παχύτερα τῶν σωμάτων εἰς λεπτομερε­
                <lb n="proem,126"/>
              στέρας οὐσίας· αἱ γὰρ δρόσοι οὐκ ἄλλως ἀναφέρονται
                <lb n="proem,127"/>
              ἢ λεπτυνομένου τοῦ ἐν τῇ γῇ ὕδατος ὑπὸ τῆς ἀνα­
                <lb n="proem,128"/>
              θυμιάσεως· αὕτη δὲ ὑπὸ πυρώδους τινὸς οὐσίας γίνεται,
                <lb n="proem,129"/>
              τοῦ ἡλίου ὑπὸ γῆν ὄντος καὶ θερμαίνοντος τὸν κατ'
                <lb n="proem,130"/>
              ἐκεῖνο τόπον, καὶ μᾶλλον ἤτοι θειώδη ἢ ἀσφαλτώδη
                <lb n="proem,131"/>
              ὄντα, ὃς θερμαινόμενος ἐπὶ πλεῖον τὴν ἀναθυμίασιν
                <lb n="proem,132"/>
              ποιεῖ· καὶ τὰ θερμὰ δὲ τῶν ὑδάτων τὰ ἐν τῇ γῇ εὑρι­
                <lb n="proem,133"/>
              σκόμενα ἐκ τῆς αὐτῆς αἰτίας γίνεται. </s>
              <s id="id.000025">τῶν οὖν δρόσων
                <lb n="proem,134"/>
              τὰ μὲν λεπτότερα εἰς ἀέρα μεταβάλλει, τὰ δὲ παχύτερα
                <lb n="proem,135"/>
              ἐπὶ ποσὸν συνανενεχθέντα διὰ τὴν τῆς ἀναθυμιάσεως
                <lb n="proem,136"/>
              βίαν, ταύτης ἀποψυχείσης κατὰ τὴν τοῦ ἡλίου μετα­
                <lb n="proem,137"/>
              τροπὴν πάλιν εἰς τὸν κάτω φέρεται τόπον. </s>
              <s id="id.000026">καὶ τὰ
                <lb n="proem,138"/>
              πνεύματα δὲ ἐκ σφοδρᾶς ἀναθυμιάσεως γίνεται, τοῦ
                <lb n="proem,139"/>
              ἀέρος ἐξωθουμένου καὶ λεπτυνομένου καὶ ἀεὶ τὸν ἑξῆς
                <lb n="proem,140"/>
              καὶ συνεχῆ αὐτῷ κινοῦντος· ἡ μέντοι κίνησις τοῦ
                <lb n="proem,141"/>
              ἀέρος οὐ κατὰ πάντα τόπον ἰσοταχὴς γίνεται, ἀλλὰ
                <lb n="proem,142"/>
              σφοδροτέρα μὲν παρ' αὐτὴν τὴν ἀναθυμίασιν, ἀμαυρο­
                <lb n="proem,143"/>
              τέρα δὲ μακρυνθεῖσα τοῦ τόπου, καθ' ὃν κεκίνηται,
                <lb n="proem,144"/>
              καθάπερ καὶ ἐπὶ τῶν ἄνω φερομένων βαρῶν. </s>
              <s id="id.000027">φέρεται γὰρ
                <lb n="proem,145"/>
              καὶ ταῦτα τάχιον μὲν κατὰ τὸν συνεγγίζοντα τῷ κάτω
                <lb n="proem,146"/>
              τόπον, πρὸς ὅν ἐστι καὶ ἡ ἀποστέλλουσα αὐτὰ δύναμις, </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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