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="Chap11_antialias_on.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Catherine_Tut1_pic1.png" timestamp="2015-07-17T21:00:09Z" url="http://wiki.jwildfire.org/images/8/87/Catherine_Tut1_pic1.png" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic1.png" ns="6" title="File:Catherine Tut1 pic1.png" />
      <img name="Catherine_Tut1_pic2.png" timestamp="2015-07-17T21:01:28Z" url="http://wiki.jwildfire.org/images/3/3f/Catherine_Tut1_pic2.png" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic2.png" ns="6" title="File:Catherine Tut1 pic2.png" />
      <img name="Catherine_Tut1_pic3.jpg" timestamp="2015-08-25T15:15:10Z" url="http://wiki.jwildfire.org/images/7/7a/Catherine_Tut1_pic3.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic3.jpg" ns="6" title="File:Catherine Tut1 pic3.jpg" />
      <img name="Catherine_Tut1_pic4.jpg" timestamp="2015-08-25T14:54:01Z" url="http://wiki.jwildfire.org/images/3/39/Catherine_Tut1_pic4.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic4.jpg" ns="6" title="File:Catherine Tut1 pic4.jpg" />
      <img name="Catherine_Tut1_pic5.jpg" timestamp="2015-08-25T14:54:29Z" url="http://wiki.jwildfire.org/images/3/35/Catherine_Tut1_pic5.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic5.jpg" ns="6" title="File:Catherine Tut1 pic5.jpg" />
      <img name="Catherine_Tut1_pic6.jpg" timestamp="2015-08-25T14:54:51Z" url="http://wiki.jwildfire.org/images/0/01/Catherine_Tut1_pic6.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic6.jpg" ns="6" title="File:Catherine Tut1 pic6.jpg" />
      <img name="Catherine_Tut1_pic7.jpg" timestamp="2015-08-25T14:55:16Z" url="http://wiki.jwildfire.org/images/3/31/Catherine_Tut1_pic7.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic7.jpg" ns="6" title="File:Catherine Tut1 pic7.jpg" />
      <img name="Catherine_Tut1_pic8.jpg" timestamp="2015-08-25T14:55:52Z" url="http://wiki.jwildfire.org/images/5/56/Catherine_Tut1_pic8.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Catherine_Tut1_pic8.jpg" ns="6" title="File:Catherine Tut1 pic8.jpg" />
      <img name="Chaotica_Launcher.jpg" timestamp="2015-05-23T12:07:19Z" url="http://wiki.jwildfire.org/images/f/f7/Chaotica_Launcher.jpg" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Chaotica_Launcher.jpg" ns="6" title="File:Chaotica Launcher.jpg" />
      <img name="Chap11_antialias_off.png" timestamp="2015-07-20T23:12:35Z" url="http://wiki.jwildfire.org/images/8/83/Chap11_antialias_off.png" descriptionurl="http://wiki.jwildfire.org/index.php?title=File:Chap11_antialias_off.png" ns="6" title="File:Chap11 antialias off.png" />
    </allimages>
  </query>
</api>