Bartin, E. Keywords: Qualifications | Doctrines | Private international law | Mots clefs: Qualifications | Doctrines | Droit international privé | ABSTRACT Etienne Bartin intends to explain in the course not precisely the question of qualifications, the solution he believes it entails, but rather the consequences of this theory of qualifications on the constitution of private international law, considered in all the problems that it raises. The author explains the relations of the theory of qualifications with the ch…