The Portus Lemanis must clearly have been one of the great thoroughfares between Britain and the Continent, and it is not a little singular that the position of a port once so famous should never have been satisfactorily settled. The common impression is that it lay at the foot of Lymne Hill. For the benefit of those who are not familiar with this neighbourhood, I should mention, in limine, that the village of Lymne or Lympne stands about 2½ miles to the west of Hythe, on the highest part of the cliff which girds in the eastern portion of Romney Marsh. On the declivity of the hill, about half-way down, is seen the old Roman castrum, called Stuttfall, occupying 10 or 12 acres. There are walls on the north, east, and west, and the east and west walls run down to the marsh itself; but, what is remarkable, the south side towards the marsh had never any wall,” and hence the erroneous notion so generally prevalent that at the foot of the castrum was once the Portus Lemanis, and that in the course of ages the sea retired from Lymne, when the port shifted to West Hythe, and that the sea again retired, when the port was transferred to Hythe. I shall endeavour to show that these changes, if they ever occurred, must have preceded the historic period, and that in the time of the Romans, as for many centuries afterwards, the only port was Hythe. In fact Portus and Hythe are the same thing, Portus in Latin being Hyð in Saxon.