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 Park Mount, Pulborouch. ANCIENT EARTHWORKS now a copse, and a prolific growth of ferns, brambles, and other vegetation much obscures the earthworks. The point is peculiarly well suited for an observation-post, as it commands a view over a large area ot the sur- rounding country. It is noteworthy that both Knepp and Park Mount command two important Sussex rivers, the former be- ing close to the Adur and the latter overlooking the Arun. Sussex possesses several excellent examples of the moated mount and bailey type of fortress (Class E). Not only is the county rich in the number of these earthworks, but the variety of forms is almost equally remarkable. Until about the year 1894, mounts of this class were generally regarded as Saxon works, identical in fact with the ^ Jwh h^^mrn,.^ burhs mentioned in the Anglo-Saxon Chronicle ; but scrutiny of the records and examination of the character and distribution of the earthworks tend to show that they were introduced by the Normans, or under Norman influence, in the time of Edward the Confessor. Arundel. — This magnificent castle presents a very excellent example of a fortress in which, although masonry has very largely superseded earthworks, it has not entirely obliterated them. The masonry of the castle, however, need not be taken into consideration in the present article, as only the earth- en defences come within its scope. The possibility of this hav- ing been a prehistoric camp of the promontory type has already been pointed out. The moated mount is a fine example of this species of work. Its diameter at the base is 230 ft., whilst at the summit it is 90 ft. On the south side its height, measuring from the bottom of the ditch, is 70 ft., whilst on the north side, where the ground rises, it is about 50 ft. It is somewhat less in size than the possesses two baileys, occupying Arundel Castle. id at Windsor Castle. Arundel relatively the same positions in reference to the keep as those at to the Round Tower. I 473 Windsor 60