this is my code:
\thispagestyle{empty}
\begin{figure}
\centerline{\includegraphics[scale=0.7]{alciatus2.pdf}}
\caption{\textit{Alciati Emblematum liber}, Emblema CXLV, In Senatum boni Principis (1531), D1v}
\end{figure}
it's part of a double sided book.
figureenvironment. And btw, use\centeringinstead ofcenterline. – Johannes_B Aug 10 '15 at 21:00