There's no orange Firefox button in Firefox 29, unless you've installed the Classic Theme Restorer add-on. Use the ≡ Menu Button in the top right corner of the window.

• Learn more about the design of the new Firefox version 29

Firefox 29 and later versions have the Australis interface that looks different than the user interface in Firefox 28 and older versions.

• With the Australis interface the orange Firefox menu button has been replaced by the three bar Firefox Menu button at the far right end of the Navigation Toolbar
  A consequence of this new menu button is that you no longer can hide the Navigation Toolbar
• There is a star like button to the right end of the search bar on the Navigation Toolbar to bookmark the current web page and a "Show your bookmarks" button next to it to open the Bookmarks in a drop down menu
• It is still possible to have the menu bar visible via the right-click context menu on the toolbars to have menus like the the Bookmarks menu

See also:

• https://support.mozilla.org/kb/how-to-make-new-firefox-look-like-old-firefox

• https://support.mozilla.org/kb/common-questions-after-updating-to-new-firefox
• https://support.mozilla.org/kb/learn-more-about-the-design-of-new-firefox

• http://forums.mozillazine.org/viewtopic.php?f=38&t=2824649

Thanks for the timely responses, however I'm sad to see that Mozilla has chosen to join the mobile \ touch design theme for it's pc users. It's sad that a elegant design was replaced with a solution that requires either loss of functionality or the rather crude windows 95-esque menu bar.