However, these edifices of the transition from the Romanesque to the Gothic, are no less precious for study than the pure types. They express a shade of the art which would be lost without them. It is the graft of the pointed upon the round arch.

Notre-Dame de Paris is, in particular, a curious specimen of this variety. Each face, each stone of the venerable monument, is a page not only of the history of the country, but of the history of science and art as well.

Thus, in order to indicate here only the principal details, while the little Red Door almost attains to the limits of the Gothic delicacy of the fifteenth century, the pillars of the nave, by their size and weight, go back to the Carlovingian Abbey of Saint-Germain des Pr�s. One would suppose that six centuries separated these