It is well known to scholars that, centuries after the Patrician Assembly had ceased to be the legislature of the Roman State, it still continued to hold formal sittings for the convenience of private business. Consequently, at a period long subsequent to the publication of the Decemviral Law, there is reason to believe that the Comitia Calata still assembled for the validation of Testaments. Its probable functions may be best indicated by saying that it was a Court of Registration, with the understanding however that the Wills exhibited were not _enrolled_, but simply recited to the members, who were supposed to take note of their tenor and to commit them to memory. It is very likely that this form of Testament was never reduced to writing at all, but at all events if the Will had been originally written, the office of the Comitia was certainly confined to hearing it read aloud, the document being retained afterwards in the custody of the Testator, or deposited under the safeguard of some religious corporation. This publicity may have been one of the incidents of the Testament executed in the Comitia Calata which brought it into popular disfavour. In the early years of the Empire the Comitia still held its meetings, but they seem to have lapsed into the merest form, and few Wills, or none, were probably presented at the periodical sitting. It is the ancient Plebeian Will--the alternative of the Testament just described--which in its remote effects has deeply modified the civilisation of the modern world. It acquired at Rome all the popularity which the Testament submitted to the Calata Comitia appears to have lost. The key to all its characteristics lies in its descent from the _mancipium_, or ancient Roman conveyance, a proceeding to which we may unhesitatingly assign the parentage of two great institutions without which modern society can scarcely be supposed capable of holding together, the Contract and the Will. The _mancipium_, or as the word would exhibit itself in later Latinity, the Mancipation, carries us back by its incidents to the infancy of civil society. As it sprang from times long anterior, if not to the invention, at all events to the popularisation, of the art of writing, gestures, symbolical acts, and solemn phrases take the place of documentary forms, and a lengthy and intricate ceremonial is intended to call the attention of the parties to the importance of the transaction, and to impress it on the memory of the witnesses. The imperfection too of oral, as compared with written, testimony necessitates the multiplication of the witnesses and assistants beyond what in later times would be reasonable or intelligible limits.