De Bello Gallico 4.10

4.10.1Mosa prōfluit ex monte Vosegō, quī est in fīnibus Lingonum, et parte quādam ex Rhēnō receptā, quae appellātur Vacalus īnsulam efficit Batāvōrum, in Ōceanum īnfluit neque longius ab Ōceanō mīlibus passuum LXXX in Rhēnum īnfluit.

The Meuse rises in the Vosges mountains, which are in the territory of the Lingones, and, taking in a branch of the Rhine called the Waal, forms the island of the Batavi, and not more than eighty miles from the Ocean it flows into the Rhine.

Note. milibus passuum LXXX: ablative of degree of difference with longius. The Meuse in fact joins the Waal, not the Rhine itself.

4.10.3Rhēnus autem oritur ex Lepontiīs, quī Alpēs incolunt, et longō spatiō per fīnēs Nantuātium, Helvētiōrum, Sēquanōrum, Mediomatricōrum, Tribocōrum, Trēverōrum citātus fertur et, ubi Ōceanō adpropinquāvit, in plūrēs diffluit partēs multīs ingentibusque īnsulīs effectīs, quārum pars magna ā ferīs barbarīs nātiōnibus incolitur, ex quibus sunt quī piscibus atque ōvīs avium vīvere exīstimantur, multīs capitibus in Ōceanum īnfluit.

The Rhine rises among the Lepontii, who live in the Alps, and is carried swiftly over a long distance through the lands of the Nantuates, Helvetii, Sequani, Mediomatrici, Triboci and Treveri, and when it comes near the Ocean it divides into several branches, forming many large islands, a great part of which are inhabited by wild barbarian tribes, some of whom are believed to live on fish and birds' eggs; and it flows into the Ocean by many mouths.