Metronome mark not showing up.

[Darren Nelsen]

I'm using Lilypond 1.8.1 on RedHat 9. I'm very pleased with it overall.

I have an orchestral score that includes all the parts files.
In the score ly file, in my paper { } section, I'm putting a metronome 
marking like so, but it's not showing up. Am I doing something wrong? (The 
midi marking picks up the right tempo, but paper doesn't display it.)

\midi { \tempo 4=110 }
\paper {
        \tempo 4=110
}

Thanks.

-- 
Darren