$\begin{figure} \par\includegraphics[angle=-90,width=8.4cm,clip]{9522fig2.ps}\end{figure}$ Figure 2: Vertical (azimuthally averaged) profiles of the gas (thin lines) and dust (thick lines) densities at selected radii in the disk.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8.5cm,clip]{9522fig6.ps}\end{figure}$ Figure 6: Radial grain size distribution computed from Eq. (7) at the end time of our simulations, for $s_0=10~\mu$ m (black) and optimal size for radial migration $s_{\rm opt}$ (grey).
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8.6cm,clip]{9522fg1a.ps}\par\includegraphics[angle=-90,width=8.6cm,clip]{9522fg1b.ps}\end{figure}$	Figure 1: Initial ( top) and final ( middle) dust density and final grain size distribution ( bottom) in a meridian plane cut of the disk for $s_0=10~\mu$ m.
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$\begin{figure} \par\includegraphics[angle=-90,width=8.4cm,clip]{9522fig2.ps}\end{figure}$	Figure 2: Vertical (azimuthally averaged) profiles of the gas (thin lines) and dust (thick lines) densities at selected radii in the disk.
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$\begin{figure} \par\includegraphics[angle=-90,width=8.5cm,clip]{9522fig3.ps}\end{figure}$	Figure 3: Evolution of the radial grain size distribution for $s_0=10~\mu$ m.
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$\begin{figure} \par\includegraphics[angle=-90,width=8.4cm,clip]{9522fig4.ps}\end{figure}$	Figure 4: Trajectories of individual particles for $s_0=10~\mu$ m.
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$\begin{figure} \par\includegraphics[angle=-90,width=8.5cm,clip]{9522fig5.ps}\end{figure}$	Figure 5: Evolution of the histogram of grain sizes for $s_0=10~\mu$ m.
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$\begin{figure} \par\includegraphics[angle=-90,width=8.5cm,clip]{9522fig6.ps}\end{figure}$	Figure 6: Radial grain size distribution computed from Eq. (7) at the end time of our simulations, for $s_0=10~\mu$ m (black) and optimal size for radial migration $s_{\rm opt}$ (grey).
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