Note 2798 — PORTUS ITIUS
Reading edition
This is undeniable. See J. F. Henry, Essai ... sur l’arrondissement communal de Boulogne-sur-mer, pp. 66-71; D. Haigneré, Etude sur le Portus Itius, p. 85, n. 1; and Dict. arch. de la Gaule, ii, 45. Henry calculated from the loss known to have been suffered by Cap d’Alprech and the promontory on which the Tour d’Odre stood during the two centuries and a half that preceded the year 1810, that in Caesar’s time they must have extended from 700 to 800 metres further seaward than in 1810. This, however, I believe to be an exaggeration.