Mannheim, the scene of Kotzebue's death, and his assassin's execution, could hardly fail to detain M. Dumas. At Frankfort he applies to a friend for an introduction to some person likely to give him details concerning Kotzebue and Sand, and his friend procures him a letter addressed to Mr Widemann, surgeon, Heidelberg. He has no letter for any body at Mannheim, and after visiting Kotzebue's house, leaves that town to proceed to Heidelberg. Just outside Mannheim he causes the postilion to stop, while he contemplates the place of the mad student's execution, which goes by the name of "_Sand's Himmelfahrtwiese_," or the meadow of Sand's ascension to heaven. It is a green meadow intersected by a rivulet, and situated within a few hundred yards of the town. While gazing at this field, and trying to conjecture the exact spot where the scaffold had stood, a stranger approaches of whom our traveller makes an enquiry. They fall into conversation, and the newcomer proves to be the governor of the prison in which Sand had been confined. Delighted at this rencontre, M. Dumas turns back and stops a day or two longer at Mannheim, copying some letters of Sand's, and collecting materials which fill several chapters of his book. He learns from his new friend that the Mr Widemann at Heidelberg, for whom he has a letter, is not only a surgeon but also the public executioner, although as yet his services have not been called into request in the latter capacity. It was his father who decapitated Sand. The Heidelberg executioner is noble by right of descent. The origin of his family's nobility is given by M. Dumas as follows:-- "The evening of the day on which King Louis of Bavaria was crowned emperor, there was a splendid ball at the town-hall, at which the empress was present. Amongst the guests was a cavalier dressed entirely in black, and having his face covered with a black mask. He invited the empress to dance: she accepted, and, whilst they were dancing together, another mask approached the emperor and asked him if he knew who his wife's partner was. 'No,' replied the emperor, 'but I suppose it is some sovereign prince.' "'Lower than that,' said the mask. "'Some nobleman then--a count or baron.' "'Lower than that.' "'Perhaps with a knight.' "'Lower still.' "'With an esquire?' "'Less than that.' "'A page?' "'You have not guessed it--lower still.' "The emperor flushed crimson with anger. "'A groom?' "'If that were all!' answered the unknown with a strange laugh. "'But who is it then?' cried the emperor. "'Tear off his mask and you will see.' "The emperor approached the sable cavalier, and tore off his mask. It was the headsman. "'Miscreant!' shouted the emperor, as his sword flashed from the scabbard, 'commend thy soul to God before thou diest.'