week the police found the bodies of slain men, now in the street, now in a ditch, now in the river. There were young men and old, all had been harmless and inoffensive in their lives, and—all had been bibliophiles. A dagger in an invisible hand had reached their hearts but the assassin had spared their purses, money, and rings. An organised search was made in the city, and the shop of Don Vincente was examined. There, in a hidden recess, the police discovered the copy of "Ordinacions per los gloriosis reys de Arago," which ought by rights to have been burned with the house of its purchaser. Don Vincente was asked how he got the book. He replied in a quiet voice, demanded that his collection should be made over to the Barcelona Library, and then confessed a long array of crimes. He had strangled his rival, stolen the "Ordinacions," and burned the house. The slain men were people who had bought from him books which he really could not bear to part with. At his trial his counsel tried to prove that his confession was false, and that he might have got his books by honest means. It was objected that there was in the world only one book printed by Lambert Palmart in 1482, and that the prisoner must have stolen this, the only copy, from the library where it was treasured. The defendant's counsel proved
