\begin{table}%t13
\caption{Comparison of abundances in \object{NGC~40}.}\label{t13}
%\centerline
{\begin{tabular}{lrrrr}
\hline
\hline
Elem.  & Present & Clegg(1)  & AC(2) & Solar(3)  \\ 
\hline  
He &$\geq$0.046  &$\geq$0.044 &$\geq$0.05  & 0.098   \\
C($-$4)  & 19 & 10 &   & 3.3\\
N($-$4)  & 1.3 & 2.4 & 0.98  & 0.84\\
O($-$4)  & 5.3 & 8.4 & 6.0  & 4.9 \\
S($-$6)  & 5.6 & 3.9 & 4.1  & 19 \\   
Ar($-$6) & 3.4 & &  & 2.5  \\
Ne($-$4) & 1.4 &  &  & 1.2 \\
Fe($-$7) & 6.1 &  &  & 320  \\
\hline  
\end{tabular}}
(1) Clegg et~al. (\cite{clegg}); (2) Aller \& Czyzak (\cite{aller1}); (3) Solar: Anders \& Grevesse (\cite{anders}); Allende Prieto et~al. (\cite{allende}); Grevesse \& Sauval (\cite{grev}).
\end{table}