AMONG the heroines of the Fronde there were certainly lofty minds and strongly tempered souls to be found; but, when the French nation remitted to those Erminias and Hermengildas the care of its destiny upon some grave emergency or decisive occasion, those very women so conspicuous for their generous impulses, delicate tastes, and unsparing self-abnegation, only profited by their possession of power to inaugurate a policy the record of which has remained branded with opprobrium in history as a treason to their country. The bare remembrance, indeed, of those sterile agitations proves the first rock upon which the memory of the Princess des Ursins suffered shipwreck. In the brilliant daughter of the Duke de Noirmoutier, heiress of a name mixed up with all the struggles of that epoch, we behold a last survivor of the Regency, and the dramatic vicissitudes of a life devoted to the pursuit of political power, have blinded the mental vision of posterity to the grandeur of a work of which that eminent woman was the principal instrument. Proud and restless, as largely dominated as any other of her sex by the vivacity of her preferences and her dislikes, but full of sound sense in her views and in the firmness of her designs, the skilful adviser of a King and Queen of Spain has not received at the hands of posterity the merit due to an idea pursued with a wonderful perseverance amidst obstacles which would have daunted men even of the strongest resolution. Because her public career ended in a catastrophe, popular opinion, which readily follows success, considers as merely abortive that long career during which her hand sustained upon the brow of a French prince the tottering crown against which the arms of Europe, the distrust of Spain, and the discouragement of France vied in conspiring.