“Desirous of accounting for the phenomenon of heredity and the value that he attached to it, he closely studied the breeding of pigeons, which is sufficiently rapid to have enabled him to draw conclusions upon an appreciable number of generations. At the end of the tenth generation he found the same type of pigeon, with the same defects, the same qualities, the same form, the same outline, and the same black plume there in the same place where the first pigeon had a black feather. Very well! With that I will prove to you that it is the same with souls as it is with bodies. “At the end of the tenth generation, we find the same soul, as far as it exists, with the same defects, the same virtues, and, as it were, with the original black feather. While giving you this illustration, it is necessary to distinguish between the soul which reappears thus hereditarily, and that which comes back by reincarnation. Believing that it is the result of a unique combination which nothing can oppose, and, since it dwells in a case called a body, is hereditary in the same degree as that body, an hereditary soul which comes from an ancestor always has his black feather, while a soul which comes back by reincarnation finds itself in a body which is in no way prepared to receive it. The aggregate materials of this body are original, and decaying, momentarily impose a silence on that soul. “But a time comes when this soul becomes the strongest, when it speaks, when it shows itself entirely, just as the black feather does. “Now, Théophraste, for several generations you were the honest gardeners in the Ferte-sous-Jonarre. But when that soul speaks in you, you are no longer yourself. Théophraste Longuet has disappeared. It is the Other who is there. It is the Other who has the gesture, the manner, the action, the black feather. It is the other who recalls the mystery of the treasure, it is the Other who remembers the Other.” “Oh! This is admirable!” exclaimed Théophraste, who was so deeply moved that he could hardly refrain from weeping with excitement. “And now I understand what you mean by my black feather. My black feather returns to me when I am the Other.” “And he will help you then, my friend,” declared Adolphe with conviction. “But until we have released the unknown who is hidden in Théophraste Longuet, and until he lives with sufficient strength, audacity, and liberty, until he is resuscitated, in a word, until he appears to us with his ‘black feather,’ we will confine ourselves to the study of that interesting document which you brought from the Conciergerie. Let us make a plan for penetrating the mystery. We will find out exactly where the treasures are buried, but we must wait for the spirit who dwells in you to say to us, ‘It is there.’”