# Why is “width=\textwidth” setting not properly scaling graphic?

I'm including a jpg figure in my LaTeX document like this:

\begin{figure}[htbp]\centering
% fbox here only for illustrative purposes
\fbox{\includegraphics[width=\textwidth,keepaspectratio]{Pictures/PoolofBethesda-CarlBloch}}
%   \includegraphics[width=\textwidth,keepaspectratio]{Pictures/LesNocesdeCana-PaoloVeronese}
\caption{\emph{Healing at the Pool of Bethesda} (1883) by Carl Bloch.}
\label{fig:Bethesda}
\end{figure}


However, the picture is not being properly scaled. I want the picture to be as wide as the text on the page with the aspectratio kept the same. I get this instead; you can see the box where the image should be:

If I simply replace the image with a different image (as shown in the commented line above) everything works as expected.

Why isn't my image being scaled properly? Am I missing something obvious?

The original image is this:

PS. I'm using the graphicx package with no options.

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Probably the graphic has some margins. Put \fbox around the image to see it. Or remove the keepaspectration key. – Ulrike Fischer Jul 2 '14 at 12:03
It might be useful for us to see that image, or as Ulrike suggests, wrap it in \fbox{...} in order to visually see where the edges of the image is. BTW: the keepaspectratio should not be necessary when you are only adding one scaling parameter. Should not do any harm either. – daleif Jul 2 '14 at 12:12
It is also possible that the graphic contains faulty resolution information (or that they are missing). – Ulrike Fischer Jul 2 '14 at 12:14
The second image works fine for me. But I doubt that it "the original image", tex.sx postprocesses images. You should put the image in a zip-file somewhere for download. – Ulrike Fischer Jul 2 '14 at 12:25

Just for a larger comment. This works just fine for me

\documentclass[a4paper]{memoir}
\usepackage{graphicx}
% I do not have that path on my PC
\graphicspath{{Pictures/}}
\begin{document}

\begin{figure}[htbp]
\centering
\includegraphics[width=\textwidth,keepaspectratio]{PoolofBethesda-CarlBloch}
\caption{\emph{Healing at the Pool of Bethesda} (1883) by Carl Bloch.}
\label{fig:Bethesda}
\end{figure}

\end{document}

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