You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140324143639" timestamp="2014-03-24T14:36:39Z" ns="0" title="Dławik" />
        <page value="20140331084548" timestamp="2014-03-31T08:45:48Z" ns="0" title="Dysza" />
        <page value="20140331084630" timestamp="2014-03-31T08:46:30Z" ns="0" title="Tłumik hałasu pneumatyczny" />
        <page value="20140331084732" timestamp="2014-03-31T08:47:32Z" ns="0" title="Podciśnienie" />
        <page value="20140331084742" timestamp="2014-03-31T08:47:42Z" ns="0" title="Ciśnienie szczytowe" />
        <page value="20140331084752" timestamp="2014-03-31T08:47:52Z" ns="0" title="Ciśnienie sterowania" />
        <page value="20140331084802" timestamp="2014-03-31T08:48:02Z" ns="0" title="Ciśnienie rozruchu" />
        <page value="20140331084812" timestamp="2014-03-31T08:48:12Z" ns="0" title="Ciśnienie próbne" />
        <page value="20140331084821" timestamp="2014-03-31T08:48:21Z" ns="0" title="Ciśnienie przełączania" />
        <page value="20140331084832" timestamp="2014-03-31T08:48:32Z" ns="0" title="Ciśnienie pracy" />
      </results>
    </querypage>
  </query>
</api>