Project Gutenberg will redirect you to a 'Welcome Stranger' page if it doesn't recognize that you have been there before. Presumably that is through the use of a cookie. So, unless your code is maintaining a cookie collection across executions, you'll be redirected to that page.
This is the page I was redirected to when clicking your link http://www.gutenberg.org/ebooks/19033?msg=welcome_stranger
If you view the source of that page, you'll see there is only one paragraph tag in it that contains exactly the text you show in your screenshot.
You will also notice that in the comments at the top of the page you will see the following notice:
DON'T USE THIS PAGE FOR SCRAPING.
Seriously. You'll only get your IP blocked.
Download http://www.gutenberg.org/feeds/catalog.rdf.bz2 instead, which contains all Project Gutenberg metadata in one RDF/XML file.