"Because she is my husband's mistress," replied Lydia, brutally; "because she has been your husband's, because Gorka came here, mad with jealousy, to provoke Lincoln, and because he met my brother, who prevented him from entering.... They quarrelled, I know not in what manner. But I know the cause of the duel.... Am I right, yes or no, in telling you they are to fight about that woman?" "My husband's mistress?" cried Maud. "You say Madame Steno has been my husband's mistress? It is not true. You lie! You lie! You lie! I do not believe it." "You do not believe me?" said Lydia, shrugging her shoulders. "As if I had the least interest in deceiving you; as if one would lie when the life of the only being one loves in the world is in the balance! For I have only my brother, and perhaps to-morrow I shall no longer have him.... But you shall believe me. I desire that we both hate that woman, that we both be avenged upon her, as we both do not wish the duel to take place--the duel of which, I repeat, she is the cause, the sole cause.... You do not believe me? Do you know what caused your husband to return? You did not expect him; confess! It was I--I, do you hear-- who wrote him what Steno and Lincoln were doing; day after day I wrote about their love, their meetings, their bliss. Ah, I was sure it would not be in vain, and he returned. Is that a proof?" "You did not do that?" cried Madame Gorka, recoiling with horror. "It was infamous." "Yes, I did it," replied Lydia, with savage pride, "and why not? It was my right when she took my husband from me. You have only to return and to look in the place where Gorka keeps his letters. You will certainly find those I wrote, and others, I assure you, from that woman. For she has a mania for letter-writing.... Do you believe me now, or will you repeat that I have lied?" "Never," returned Maud, with sorrowful indignation upon her lovely, loyal face, "no, never will I descend to such baseness." "Well, I will descend for you," said Lydia. "What you do not dare to do, I will dare, and you will ask me to aid you in being avenged. Come," and, seizing the hand of her stupefied companion, she drew her into Lincoln's studio, at that moment unoccupied. She approached one of those Spanish desks, called baygenos, and she touched two small panels, which disclosed, on opening, a secret drawer, in which were a package of letters, which she seized. Maud Gorka watched her with the same terrified horror with which she would have seen some one killed and robbed. That honorable soul revolted at the scene in which her mere presence made of her an accomplice. But at the same time she was a prey, as had been her husband several days before, to that maddening appetite to know the truth, which becomes, in certain forms of doubt, a physical need, as imperious as hunger and thirst, and she listened to Florent's sister, who continued: