is in favour of the existence of a harbour; and in the irregularities of the shore are seen the angusti montes which turned away the Roman forces; not high cliffs conspicuous from a distance, but low mounts, slight eminences, high enough to stop the advance of invaders, and low enough to allow the Britons collected on them to throw their missiles with effect; and between these the water was so held in, that had Caesar attempted to force a landing, his troops would inevitably have been broken into separate detachments, and, in the then high state of the tide, some of his ships might have floated under the cliffs, within reach of his enemies: so that the spot not only agrees most exactly with Caesar's description, but also thoroughly justifies the opinion he gives, " Hunc ad egrediendum nequaquam idoneum arbitratus locum." It may perhaps be urged that Volusenus would have discovered such peculiarities as these, and have warned Caesar against attempting a descent on this part of the coast; but he is not likely to have ventured with his single ship into an unknown harbour in a hostile country, and, judging from the imperfect idea which I myself gained on seeing the place from the Pier-Head, a distant view would not have enabled him to detect the true character of the ground.
   Following the coast in the direction of the tide, from Winchelsea towards Beachy Head, the first opening in the high cliffs in any degree practicable for Caesar's purpose is between St. Leonard's and Bulverhithe, exactly at the right distance from Pett level to agree with his history.¹ Here two small valleys unite on the shore, having between them a peninsular hill connected at the 
   ¹ Dion Cassius says Caesar sailed round a promontory, and this the line of coast would form to any one proceeding from Pett level to Bulverhithe. As Caesar does not describe the character of the coast, Dion Oassius must have derived his information from some other source, and he may therefore be regarded as an independent authority.