Kent coastline of Kent is continuously changing, due to tectonic uplift and coastal erosion. Until about 960, the Isle of Thanet was an island, separated by the Wantsum channel, formed around a deposit of chalk; over time, the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the River Medway, rises near East Grinstead in Sussex and flows eastwards to Maidstone. Here it turns north and breaks through the North Downs at Rochester, then joins the estuary of the River Thames as its final tributary near Sheerness. The Medway is
Maidstone (UK Parliament constituency) the candidate was acquitted, but one of the judges noted that ""there exists among the voters of this borough a number of the lower class who expect, and are known to respect, a payment or reward for their votes... The proved cases of bribery extend through all the wards."" The borough was abolished with effect from the general election of 1918, but the Maidstone name was transferred to the new county division in which the town stood, which consisted of Maidstone itself and the Maidstone and Hollingbourne rural districts. This contained no towns of any size, but the villages collectively