$\begin{figure} \par\includegraphics[angle=-90,width=12.0cm,clip]{0539fig1.eps} \end{figure}$ Figure 1: $\log$ (N/O) as a function of the helium abundance. Our new results are presented as solid dots, while the crosses show the abundances derived in our previous work, as quoted in the text.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=11.8cm,clip]{0539fig4.eps} \end{figure}$ Figure 4: The O/H gradient from the merged sample of Maciel & Quireza (1999, filled circles) and the present sample (open circles). Linear and quadratic least squares fits are also shown.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=12.0cm,clip]{0539fig1.eps} \end{figure}$	Figure 1: $\log$ (N/O) as a function of the helium abundance. Our new results are presented as solid dots, while the crosses show the abundances derived in our previous work, as quoted in the text.
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$\begin{figure} \par\includegraphics[angle=-90,width=12.0cm,clip]{0539fig2.eps} \end{figure}$	Figure 2: Argon abundances as a function of the O/H ratio. The symbols are as in Fig. 1.
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$\begin{figure} \par\includegraphics[angle=-90,width=12.0cm,clip]{0539fig3.eps} \end{figure}$	Figure 3: Sulfur abundances as a function of the O/H ratio. The symbols are as in Fig. 1.
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$\begin{figure} \par\includegraphics[angle=-90,width=11.8cm,clip]{0539fig4.eps} \end{figure}$	Figure 4: The O/H gradient from the merged sample of Maciel & Quireza (1999, filled circles) and the present sample (open circles). Linear and quadratic least squares fits are also shown.
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