How Do You Restore The Application Menu?

[Aere Greenway]

All:

I can't believe it, but it appears that I have accidentally destroyed my 
primary system (Lubuntu 13.10).

I was attempting to remove one of my commonly used (but no longer 
needed) task-bar launchers, but what I actually (unknowingly) removed 
was the application menu itself (the icon at the far left of the task-bar).

I have spent over an hour trying to figure out a way to restore it, and 
have not been successful.

Does anyone have any idea of how to restore the application menu to the 
task-bar?

-- 
Sincerely,
Aere