In the case of kin-slaying in a ‘passion,’ the influence of the ghosts’ will was especially vigorous. Plato says[106] that even when the ‘involuntary’ slayer had served a term of three years’ exile, and had returned to his native land, he could never return to his family and his home, or share with his kindred in domestic rites. Thus the Erinnys of the slain kinsman refused to be controlled by a centralised autocracy at Delphi, or even by the will of native State-gods. Hence, perhaps, it is that in the dramatised versions of the Oresteia, Athene has to use ‘Persuasion’[107] to induce the Furies of Clytaemnestra to become Eumenides. Hence the Furies say of Orestes[108]: ‘His mother’s blood upon the Earth he spilled. Shall he in Argos dwell—his father’s home? What phratry-altar can him e’er receive? What common lustral water can he share?’ Hence, also, as Glotz points out,[109] the preliminary plea on oath of the accuser and the accused, in homicide cases, was taken before the altar of the Erinnyes or the Semnai Theai; and the defendant who was acquitted of murder by the Areopagus, as well as the returned exile who had paid the penalty of involuntary homicide, offered sacrifice there. THE RITUAL OF HOMICIDE-PURGATION In regard to the ceremonial of purgation by which the slayer, in certain circumstances, was ‘cleansed’ or purified, we have already[110] pointed out what we consider to have been the origin of the rite; and we have shown how the analogies which existed between such a ceremonial and the general Chthonian sacrifices of ‘expiation,’ ‘placation,’ and ‘aversion’ caused these rites to be confused with one another in the minds of ancient and of modern writers. The ceremonial of homicide-purgation appears at first sight so simple and elementary in character that we would be inclined to assume _a priori_ that it could have been duly performed by any ordinary person. But, in fact, we shall see, the performance became the privilege of priests or theocratic nobles. An animal, generally a pig,[111] but sometimes a calf or a lamb,[112] was bled to death and the warm flowing blood was poured over the hands of the slayer, passing away into the sea or into a running stream. The dead animal was then thrown into the water, or was buried, but it could not be eaten.