You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaifrom="Bronshoj.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="263" ns="6" title="Mynd:&#039;Any thing for me, if you please &#039; -- Post-office of the Brooklyn Fair in aid of the Sanitary Commission (Boston Public Library).jpg" />
      <page pageid="268" ns="6" title="Mynd:&#039;Snap-the-whip&#039; (Boston Public Library).jpg" />
      <page pageid="269" ns="6" title="Mynd:&#039;Winter&#039; -- A skating scene (Boston Public Library).jpg" />
      <page pageid="235" ns="6" title="Mynd:Aettarsaga-rosa-adalsteinsdottir.jpg" />
      <page pageid="18" ns="6" title="Mynd:Afmaeli12.png" />
      <page pageid="19" ns="6" title="Mynd:Afmaeli2.png" />
      <page pageid="140" ns="6" title="Mynd:Animals wild bear koala background picture-2.jpg" />
      <page pageid="6" ns="6" title="Mynd:Blomabjorn.gif" />
      <page pageid="183" ns="6" title="Mynd:Borgerdydskolen-1845.jpg" />
      <page pageid="7" ns="6" title="Mynd:Borði - leiðbeiningar með mediawiki.gif" />
    </pages>
  </query>
</api>