There were of course many notaries in the service of the pontifical chancery; the seven regional notaries preserved a certain pre-eminence over the others and became the protonotary (also spelled "prothonotaries"), whose name and office continued. The ordinary notaries of the chancery, however, were gradually known by other names, according to their various functions, so that the term ceased to be employed in the pontifical and other chanceries. The prothonotaries were and still are a college of prelates, enjoying numerous privileges; they are known as "participants", but outside of Rome there are many purely honorary prothonotaries. The official duties had insensibly almost ceased; but Pius X in his reorganization of the Roman Curia appointed participant prothonotaries to the chancery (Const. "Sapienti", 29 June 1908). A corresponding change occurred in the bureaux of the episcopal churches, abbeys, etc.; the officials attached to the chancery have ceased to be known as notaries and are called chancellor, secretary, etc. Lastly, mention must be made of the notaries of the synodal or conciliar assemblies, whose duties are limited to the duration of the assembly. Society in former times did not recognize the separation of powers; so, too, in the Church the judicial authority was vested in the same prelates as the administrative. Soon, however, contentious matters were tried separately before a specially appointed body. The courts required a staff to record the transactions; these clerks were likewise notaries. In most civil courts they are, however, called registrars, clerks of the court, etc., but in the ecclesiastical tribunals they retain the name notary, though they are also called "actuaries". Thus the special law of the higher ecclesiastical tribunals, the Tribunal of the Roman Rota and the Supreme Tribunal of the Apostolic Signatura, reorganized by St. Pius X, provides for the appointment of notaries for these two tribunals. The reason why the head official charged with drawing up the documents of the Holy Office is called the notary, as were the clerks who in former times drew up the records of the Inquisition, is, doubtless, that of all the Roman Congregations the Holy Office is the only real judicial tribunal. The notaries of ecclesiastical tribunals are usually clerics; the duties may however be confided to laymen, except in criminal cases against a cleric.