400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=new+self-interpreting+Testament,+containing+thousands+various+readings+parallel+passages,+intr.+arguments+[&c.]+J.+Platts+john+platts 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.