If he did not try to conceal his satisfaction at coming into possession of this fortune, which enabled him to give himself up to his passion for pure science, he had equally to rejoice, it seemed to him, for another cause. Mademoiselle Stangerson was, at the time when her father returned from America and bought the Glandier estate, twenty years of age. She was exceedingly pretty, having at once the Parisian grace of her mother, who had died in giving her birth, and all the splendour, all the riches of the young American blood of her parental grandfather, William Stangerson. A citizen of Philadelphia, William Stangerson had been obliged to become naturalised in obedience to family exigencies at the time of his marriage with a French lady, she who was to be the mother of the illustrious Stangerson. In that way the professor’s French nationality is accounted for. Twenty years of age, a charming blonde, with blue eyes, milk-white complexion, and radiant with divine health, Mathilde Stangerson was one of the most beautiful marriageable girls in either the old or the new world. It was her father’s duty, in spite of the inevitable pain which a separation from her would cause him, to think of her marriage; and he was fully prepared for it. Nevertheless, he buried himself and his child at the Glandier at the moment when his friends were expecting him to bring her out into society. Some of them expressed their astonishment, and to their questions he answered: “It is my daughter’s wish. I can refuse her nothing. She has chosen the Glandier.” Interrogated in her turn, the young girl replied calmly: “Where could we work better than in this solitude?” For Mademoiselle Stangerson had already begun to collaborate with her father in his work. It could not at the time be imagined that her passion for science would lead her so far as to refuse all the suitors who presented themselves to her for over fifteen years. So secluded was the life led by the two, father and daughter, that they showed themselves only at a few official receptions and, at certain times in the year, in two or three friendly drawing-rooms, where the fame of the professor and the beauty of Mathilde made a sensation. The young girl’s extreme reserve did not at first discourage suitors; but at the end of a few years, they tired of their quest. One alone persisted with tender tenacity and deserved the name of “eternal fiancé,” a name he accepted with melancholy resignation; that was Monsieur Robert Darzac. Mademoiselle Stangerson was now no longer young, and it seemed that, having found no reason for marrying at five-and-thirty, she would never find one. But such an argument evidently found no acceptance with Monsieur Robert Darzac. He continued to pay his court—if the delicate and tender attention with which he ceaselessly surrounded this woman of five-and-thirty could be called courtship—in face of her declared intention never to marry.