Evaluation in maxima-mode



I'm running maxima-mode in emacs to create latex output, but controls such
as C-c C-u c don't work for me. My file looks like this:

\documentclass{article}
\usepackage{emaxima}

\begin{document}
\begin{maxima}
  integrate(1/x,x);
\end{maxima}

\end{document}

When I run a pdflatex, the output looks like maxima. Inside emacs, though, I
can't evaluate the cells.
My .emacs includes the following:

(setq auto-mode-alist (cons '("\\.max" . maxima-mode) auto-mode-alist))
(setq load-path (cons  "/usr/share/maxima/5.9.0/emacs" load-path ))
(autoload 'maxima "maxima" "Running Maxima interactively" t)
(autoload 'maxima-mode "maxima" "Maxima editing mode" t)\

What am I doing wrong? The other C-c 's do work, just the maxima ones don't.