[247] The following localities have been suggested for Bibrax: Bièvre, Bruyères, Neufchâtel, Beaurieux, and the mountain called Vieux-Laon. Now that the camp of Cæsar has been discovered on the hill of Mauchamp, there is only room to hesitate between Beaurieux and Vieux-Laon, as they are the only localities among those just mentioned which, as the text requires, are eight miles distant from the Roman camp. But Beaurieux will not suit, for the reason that even if the Aisne had passed, at the time of the Gallic war, at the foot of the heights on which the town is situated, we cannot understand how the re-enforcements sent by Cæsar could have crossed the river and penetrated into the place, which the Belgian army must certainly have invested on all sides. This fact is, on the contrary, easily understood when we apply it to the mountain of Vieux-Laon, which presents towards the south impregnable escarpments. The Belgæ would have surrounded it on all parts except on the south, and it was no doubt by that side that, during the night, Cæsar’s re-enforcements would enter the town.
[248] De Bello Gallico, II. 7.—(Plate 9 gives the plan of the camp, which has been found entire, and that of the redoubts with the fosses, as they have been exposed to view by the excavations; but we have found it impossible to explain the outline of the redoubts.)
[249] De Bello Gallico, II. 12.—Sabinus evidently commanded on both sides the river.
[250] De Bello Gallico II. 12.—Sabinus evidently commanded on both sides the river.
[251] See the biographies of Cæsar’s lieutenants, Appendix D.
[252] De Bello Gallico, II. 11.
[253] The vineæ were small huts constructed of light timber work covered with hurdles and hides of animals. (Vegetius, Lib. IV. c. 16.) See the figures on Trajan column.
In a regular siege the vineæ were constructed out of reach of the missiles, and they were then pushed in file one behind the other up to the wall of the place attacked, a process which was termed agere vineas; they thus formed long covered galleries which, sometimes placed at right angles to the wall and sometimes parallel, performed the same part as the branches and parallels in modern sieges.
[254] The terrace (agger) was an embankment, made of any materials, for the purpose of establishing either platforms to command the ramparts of a besieged town, or viaducts to conduct the towers and machines against the walls, when the approaches to the place presented slopes which were too difficult to climb. These terraces were used also sometimes to fill up the fosse. The agger was most commonly made of trunks of trees, crossed and heaped up like the timber in a funeral pile.—(Thucydides, Siege of Platæa.—Lucan, Pharsalia.—Vitruvius, book XI., Trajan Column.)
[255] Antiquaries hesitate between Beauvais, Montdidier, or Breteuil. We adopt Breteuil as the most probable, according to the dissertation on Bratuspantium, by M. l’Abbé Devic, cure of Mouchy-le-Châtel. In fact, the distance from Breteuil to Amiens is just twenty-five miles, as indicated in the “Commentaries.” We must add, however, that M. l’Abbé Devic does not place Bratuspantium at Breteuil itself, but close to that town, in the space now comprised between the communes of Vaudeuil, Caply, Beauvoir, and their dependencies.—Paris, 1843, and Arras, 1865.