In imparting his facts the grammarian had to work up to that educational consummation represented by the rhetorical school. ‘Ratio dicendi’ is quite distinctly laid down by Quintilian as one of his duties.[439] In giving his exercises, therefore, he would endeavour to give such information on technical and traditional points as would prepare the pupil for his course of study in the senior school. Sometimes the pupil went for further preparation to a special master.[440] Sometimes a whole course—the famous ἐγκύκλιος παιδεία—in which special stress was laid on music and geometry[441]—was put in between the grammarian’s and the rhetor’s schools. How far these practices were customary in Gaul we have no means of ascertaining; but it is certain that there must have been exercises preparatory to the rhetorical training, and it is these which are recorded by the Greek rhetoricians, and which give us a unique insight into the methods of that training. Προγυμνάσματα they are called by the rhetors, and defined by one of them as ἂ πρὸ τῆς ὑποθέσεως (i.e. before declaiming from a given subject) ἀναγκαῖόν ἐστι εἰδέναι τε καὶ ἐπιεικῶς ἐγγυμνάζεσθαι.[442] Aphthonius was a sophist of Antioch, a pupil of the great Libanius, and flourished during the second half of the fourth century. He is mentioned by Libanius[443] as a teacher of boys. Of his many works we possess only the _Progymnasmata_ and the _Fables_. Closely associated with his name are those of Theon and Hermogenes. Hoppichler has demonstrated[444] how similar their works are. Theon is clearly the oldest,[445] and Aphthonius is younger than Hermogenes.[446] From a scholiast who says that after Aphthonius had published his work, that of Hermogenes came to be looked on as ἀσαφῆ πως καὶ δύσληπτα, it is equally clear that Aphthonius was the most recent of these writers. That he was also the best and most enduring is shown by the many commentaries and scholia on his work (which is often verbally quoted by later rhetoricians like Nicolaus), and by the fact that in the sixteenth and seventeenth centuries his book was still used in schools and universities. Indeed, the form of school exercise which he suggests persists up to the present day.[447] Aphthonius, then, may be taken as the best representative of the rhetorical school at Antioch.