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>
    <allimages aicontinue="20121019160856|B-amylase_model.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="StirPlatePWM_wiring.gif" timestamp="2013-07-01T01:09:57Z" user="Kaiser" url="http://braukaiser.com/wiki/images/b/bf/StirPlatePWM_wiring.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:StirPlatePWM_wiring.gif" ns="6" title="File:StirPlatePWM wiring.gif" />
      <img name="StirPlatePWM-1.jpg" timestamp="2013-05-08T00:36:30Z" user="Kaiser" url="http://braukaiser.com/wiki/images/f/f4/StirPlatePWM-1.jpg" descriptionurl="http://braukaiser.com/wiki/index.php/File:StirPlatePWM-1.jpg" ns="6" title="File:StirPlatePWM-1.jpg" />
      <img name="StirPlatePWM-2.jpg" timestamp="2013-05-07T21:32:36Z" user="Kaiser" url="http://braukaiser.com/wiki/images/a/a9/StirPlatePWM-2.jpg" descriptionurl="http://braukaiser.com/wiki/index.php/File:StirPlatePWM-2.jpg" ns="6" title="File:StirPlatePWM-2.jpg" />
      <img name="StirPlatePWM_breadboard.gif" timestamp="2013-05-07T21:02:27Z" user="Kaiser" url="http://braukaiser.com/wiki/images/1/19/StirPlatePWM_breadboard.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:StirPlatePWM_breadboard.gif" ns="6" title="File:StirPlatePWM breadboard.gif" />
      <img name="PWM_detail.gif" timestamp="2013-05-07T03:14:39Z" user="Kaiser" url="http://braukaiser.com/wiki/images/d/dd/PWM_detail.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:PWM_detail.gif" ns="6" title="File:PWM detail.gif" />
      <img name="555_internals.gif" timestamp="2013-05-07T03:03:45Z" user="Kaiser" url="http://braukaiser.com/wiki/images/e/eb/555_internals.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:555_internals.gif" ns="6" title="File:555 internals.gif" />
      <img name="LactateTaste_charts_3.gif" timestamp="2013-03-10T00:48:41Z" user="Kaiser" url="http://braukaiser.com/wiki/images/a/a1/LactateTaste_charts_3.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:LactateTaste_charts_3.gif" ns="6" title="File:LactateTaste charts 3.gif" />
      <img name="LactateTaste_charts_2.gif" timestamp="2013-03-10T00:43:58Z" user="Kaiser" url="http://braukaiser.com/wiki/images/1/15/LactateTaste_charts_2.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:LactateTaste_charts_2.gif" ns="6" title="File:LactateTaste charts 2.gif" />
      <img name="LactateTaste_charts_1.gif" timestamp="2013-03-10T00:43:19Z" user="Kaiser" url="http://braukaiser.com/wiki/images/2/2c/LactateTaste_charts_1.gif" descriptionurl="http://braukaiser.com/wiki/index.php/File:LactateTaste_charts_1.gif" ns="6" title="File:LactateTaste charts 1.gif" />
      <img name="Blog_general.jpg" timestamp="2013-01-13T19:05:10Z" user="Kaiser" url="http://braukaiser.com/wiki/images/4/46/Blog_general.jpg" descriptionurl="http://braukaiser.com/wiki/index.php/File:Blog_general.jpg" ns="6" title="File:Blog general.jpg" />
    </allimages>
  </query>
</api>