We have now gone through the whole of what was termed the 'Learned Service[172]' mentioned in the 'Notitia,' with one exception--the title of an officer, in himself humble and obscure, who has given his name to the highest functionaries of mediaeval and modern Europe. [Footnote 172: [Greek: tous epi tais logikais tetagmenous leitourgiais] (Lydus iii. 7). [Greek: Peras men hode ton logikon tes taxeos systematon] (iii. 21). The 'Learned Service' may be taken as corresponding to 'a post fit for a gentleman,' in modern phraseology. In our present Official Directories the members of the [Greek: logike taxis] appear to be all dignified with the title 'Esq.;' the others have only 'Mr.'] [Sidenote: Cancellarius.] (12) The _Cancellarius_ appears in the 'Notitia' only once[173], and then in connection not with the Praetorian Praefect, but with the Master of the Offices. At the very end of the Officium of this dignitary, after the six _Scholae_ and four _Scrinia_ of his subordinates, and after the _Admissionales_, whom we must look upon as the Ushers of the Court, comes the entry, Cancellarii: their very number not stated, the office being too obscure to make a few less or more a matter of importance. [Footnote 173: Occidentis ix. 15.] After the compilation of the 'Notitia' the office of Cancellarius apparently rose somewhat in importance, and was introduced into other departments besides that of the Master of the Offices. One Cancellarius appears attached to the Court of Cassiodorus as Praetorian Praefect, and from the admonitions addressed to him by his master[174], we see that he had it in his power considerably to aid the administration of justice by his integrity, or to hinder it by showing himself accessible to bribes. [Footnote 174: In Var. xi. 6, which see.] In describing the Cancellarius, as in almost every other part of his treatise, Lydus has to tell a dismal story of ruin and decay[175]: [Footnote 175: iii. 36, 37.]