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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="20140426002417" timestamp="2014-04-26T00:24:17Z" ns="0" title="Intro" />
        <page value="20140426063719" timestamp="2014-04-26T06:37:19Z" ns="0" title="Artificial language" />
        <page value="20140503194129" timestamp="2014-05-03T19:41:29Z" ns="0" title="The norm of humanity" />
        <page value="20140504034812" timestamp="2014-05-04T03:48:12Z" ns="0" title="Atomic systems" />
        <page value="20140515083930" timestamp="2014-05-15T08:39:30Z" ns="0" title="Unique experiences" />
        <page value="20140515130519" timestamp="2014-05-15T13:05:19Z" ns="0" title="Parasites" />
        <page value="20140515130950" timestamp="2014-05-15T13:09:50Z" ns="0" title="Perfect chemistry" />
        <page value="20140515131517" timestamp="2014-05-15T13:15:17Z" ns="0" title="Evangelion" />
        <page value="20140515131632" timestamp="2014-05-15T13:16:32Z" ns="0" title="Prior the realm of sleep" />
        <page value="20140516053153" timestamp="2014-05-16T05:31:53Z" ns="0" title="An existence mysterious" />
      </results>
    </querypage>
  </query>
</api>