400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Dictionnaire Historique D'Education, ou, sans donner preceptes, se propose d'exercer ... les facultes l'ame et l'esprit ... jean jacques fillassier 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.