400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Exposition+et+histoire+des+principales+découvertes+scientifiques+modernes:+Photographie.+Telégraphie+aérienne+et+électrique...+(395+p.)+louis+figuier because the request was invalid.

This might be because the link was created a long time ago. Try your search again on Google. That’s all we know.