Sub Articulo 140.0

 I'm producing graph.eps file from graphics with the driver HP LaserJet
 5P/5MP. I include it in LaTeX file with "graphicx" package.
 
 Ideally, I would like two graphs to fit on one page. I tried this:
 
 \enlargethispage{2cm}
 \begin{figure}[h]
   \centering
   \includegraphics[clip,width=.45\linewidth]{fig1.eps}
   \caption{Negative S-SIMS ion mass spectrum of a chromium phosphate
    conversion coating on Al. Conversion time was 600~s.The sample was
    rastered 60~s over an area of 400~$\mu$m$^2$.}
   \vspace{5mm}
   \includegraphics[width=.8\linewidth]{fig2.eps}
   \caption{Negative FT LMMS ion mass spectrum of the same sample.
    The detection conditions were optimized for $m/z$ 90 -- 350
    ($T_{\rm gate} = 400~\mu$s). The analyzed area was about
    4000~$\mu$m$^2$.}
 \end{figure}
 
 Once I print this page, only the first fig is printed in its original size;
 the second does never appear.
 What could be the problem? and how to solve it?
 Both eps files can be viewed separately with GSVIEW.