Magic Mouse gestures let you use swipes and taps on the mouse itself to do things like go back a page when browsing in Safari.
Unfortunately, some folks who have upgraded to Mavericks may have noticed that their Magic Mouse gestures no longer work.
Luckily, there’s a quick way to re-enable this feature, if you miss it.
Launch System Preferences from the Applications folder or the Dock, and click on the Mouse icon. Click on the More Gestures tab and then click on Swipe Between Pages.
Now when you use Safari with your Magic Mouse, you’ll be able to use gestures yet again. Hoorah!