History of the United Netherlands, 1600-02

by a dyke stretching along the coast on the west. Here had hitherto been the harbour formed by the mouth of the river Iperleda as it mingled with the sea, but this entrance had become so choked with sand as to be almost useless at low water. This circumstance would have rendered the labours of the archduke comparatively easy, and much discouraged the States, had there not fortunately been a new harbour which had formed itself on the eastern side exactly at the period of threatened danger. The dwarf mountain range of dunes which encircled the town on the eastern side had been purposely levelled, lest the higher summits should offer positions of vantage to a besieging foe. In consequence of this operation, the sea had burst over the land and swept completely around the place, almost converting it into an island, while at high water there opened a wide and profound gulf which with the ebb left an excellent channel quite deep enough for even the ships of war of those days. The next care of the States author