Aube the police pursued a girl because she had murdered two children, whom she ought to have taken to the foundling hospital, in order to keep the little money given to the children. At last the police found the girl on the road to Paris, near Romilly, drowned, and her own father gave himself up as her murderer. Finally, let me mention a couple of cases which have occurred recently, and have therefore only the newspapers as their vouchers. In October 1836 a Count Belecznai was condemned to death in Hungary because he had murdered an official and severely wounded his own relations. His elder brother was executed earlier as a patricide, and his father also had been a murderer (_Frankfurter Postzeitung_ of the 26th October 1836). A year later the youngest brother of this Count, in the same street where the latter had murdered the official, fired a pistol at the steward of his estates, but missed him (_Frankfurter Journal_, 16th September 1837). In the _Frankfurter Postzeitung_ of the 19th November 1857 a correspondent in Paris announces the condemnation to death of a very dangerous highway robber, Lemaire, and his companions, and adds: “The criminal tendency seems hereditary in his family and in those of his confederates, as several of their race have died on the scaffold.” It follows from a passage in the Laws of Plato that similar cases were already known in Greece (_Stob. Flor._, vol. ii. p. 213). The annals of crime will certainly have many similar pedigrees to show. The tendency to suicide is specially hereditary. On the other hand, when we see the excellent Marcus Aurelius have the wicked Commodus for a son, this does not not lead us astray; for we know that the _Diva Faustina_ was a _uxor infamis_. On the contrary, we mark this case in order in analogous cases to presume an analogous reason; for example, that Domitian was the full brother of Titus I can never believe, but that Vespasian also was a deceived husband.