Tetricus (xxiv, 24, 5) we read: conrectorem totius Italiæ fecit, id est, Campaniae, Samni, Lucanise, Brittiorum [Bruttii], Apuliae, Calabriæ, Etruriæ atque Umbriæ, Piceni et Flaminiæ omnisque annonariæ regionis; but in the Life of Aurelian (xxvi. 39, 1) Tetricum triumphatum correctorem Lucaniæ fecit (so Aurel. Victor. &c.). Both statements cannot be true, and Mommsen (Ephem. epig. i. 140) has proved that the first is to be accepted and the second rejected.
We find the idea of a governor of Italy in the famous advice to Augustus which Dion Cassius (52, 21) puts in the mouth of Maecenas. It is suggested that Italy beyond a circuit of a hundred miles from Borne should be governed like the provinces. But as early as 214 we find C. Suetrius Sabinus, a consular, as electus ad corrigendum statum Italiæ (C. I. L. x. 5398) and at a later period Pomponius Bassus ἐπανορθωτὴς πάσης Ἰταλίας. See further Mommsen, loc. cit., and Staatsrecht, ii. 1086.
Thus we find that correctors of all Italy were occasionally appointed, during the third century. Therefore, Mommsen argues convincingly (and it is a good instance of the application of a principle of historical criticism), the notice that Tetricus was corrector Italiæ is the true one. For a later writer to whom correctors of Lucania were perfectly familiar would never have changed a corrector Lucaniæ into a corrector Italiæ.
21. PROBUS AND THE LIMES GERMANICUS—(P. 331.)
The statement of Gibbon that Probus "constructed a stone wall of a considerable height, and strengthened it by towers at convenient distances" is not warranted by the evidence, which consists entirely of two remarks in his Life in the Hist. Aug.:—
(1) c. 13. contra urbes Romanas et castra in solo barbarico posuit atque illic milites collocavit.
(2) c. 14. sed visum est id non posse fieri nisi si limes Romanus extenderetur et fieret Germania tota provincia. (id refers to the command of Probus, that the German dependent tribes should not fight themselves, but, when attacked, seek the aid of the Roman army.)
It will be observed that the only statement of fact is in the first passage, from which we learn that Probus constructed and garrisoned some forts on soil which was then barbarian. The second passage states no fact, but ventilates a, perhaps wild, hypothesis.
It is also to be noticed that the actual Wall, constructed long before the time of Probus, was not a regular wall of hewn stone, and that its length between the points that Gibbon roughly marks was more than 300 (not "near 200") miles.
It may be added that the limes (both the trans-Rhenane and the trans-Danubian) was probably due chiefly to Domitian and Hadrian.
There is a considerable literature on the Imperial limes; but all previous works will be superseded by "Der Obergermanischraetische Limes des Römerreichs," edited by O. von Sarwey and F. Hettner, and published under the auspices of the Reichs-Limes-Kommission. This work is appearing in parts.
22. GERMAN CAMPAIGNS OF DIOCLETIAN, MAXIMIAN AND CONSTANTIUS (A.D. 285-299)—(P. 361 sqq.)
(1) There was a campaign in spring 285, against German invaders of the Danubian regions, in consequence of which Diocletian assumed the title of Germanicus Maximus. Cp. Corp. Insc. Lat. vi. 1116.
(2) In 286 the Alamanni (who, pushed by the Burgundians, had left their old abodes on the Main and established themselves along the banks of the Rhine, within the limes, from Mainz to Lake Constance) and Burgundians invaded Gaul. Maximian was at Mainz, in June (Frag. Vat. 271). The Heruls and Chaibones also approached the frontier, but their host was destroyed by Maximian, who
