Note 3002 — BOOK IV. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED.
John Bostock translation
Ansart remarks that the circuit of the peninsula from Saint Brieuc to the mouth of the river Vilaine is only 450 miles, but that if taken from the city of Avranches to the mouth of the Loire, it is 650.