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>
    <querypage name="Ancientpages">
      <results>
        <page value="20130501110049" timestamp="2013-05-01T11:00:49Z" ns="0" title="名鑑" />
        <page value="20130506115025" timestamp="2013-05-06T11:50:25Z" ns="0" title="読法" />
        <page value="20130508100429" timestamp="2013-05-08T10:04:29Z" ns="0" title="和歌の浦丸" />
        <page value="20130510063508" timestamp="2013-05-10T06:35:08Z" ns="0" title="屯田兵証言書式" />
        <page value="20130613024922" timestamp="2013-06-13T02:49:22Z" ns="0" title="日ノ出丸" />
        <page value="20130614033906" timestamp="2013-06-14T03:39:06Z" ns="0" title="末永幾太郎" />
        <page value="20130627121849" timestamp="2013-06-27T12:18:49Z" ns="0" title="屯田兵関係文化財一覧" />
        <page value="20130627122326" timestamp="2013-06-27T12:23:26Z" ns="0" title="栃内元吉" />
        <page value="20130627122439" timestamp="2013-06-27T12:24:39Z" ns="0" title="上原轍三郎" />
        <page value="20130629050402" timestamp="2013-06-29T05:04:02Z" ns="0" title="屯田兵及家族教令" />
      </results>
    </querypage>
  </query>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
</api>