Geography of Kent and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the River Medway, rises near Edenbridge and flows some 25 miles (40 km) eastwards to a point near Maidstone, when it turns north. Here it breaks through the North Downs at Rochester before joining the River Thames as its final tributary near Sheerness. The river is tidal as far as Allington lock, but in earlier times cargo-carrying vessels reached as far upstream as Tonbridge. The Medway has captured the head waters of other rivers such as the River Darent. There are other rivers in Kent, most notably the
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