first bypass, was built in the 1830s, with the town slaughterhouse beneath. In 1840, at Monmouth's Shire Hall, Chartist protesters John Frost, Zephaniah Williams and William Jones became the last men in Britain to be sentenced to be hanged, drawn and quartered after being found guilty of treason following riots in Newport that led to 20 deaths. The sentences were later commuted to transportation to Van Diemen's Land. Until the establishment of an official police force in 1857, Monmouth had a parish constable assisted by beadles to keep law and order. The appointed constables held office for a year and were often men who had experience in other local government or community roles. William Fuller who held office as Monmouth's constable for over twenty years in the early to mid 19th century, also served as Inspector of Nuisances, Chief of the Fire Brigade, Inspector of Weights and Measures, Clerk of the Market, and Conservator of the Wye. Fuller is also recorded as having rescued people from drowning, acted as emergency midwife, and rescued a woman from a flooded house. The types of crime that Fuller and subsequent police officers had to deal with in and around Monmouth as the century progressed were recorded in detail in the local newspapers, the Merlin and the Monmouthshire Beacon. These crimes included theft of livestock, clothing, food, valuables, fuel (wood and coal); assault; vandalism; highway robbery; fraud; passing counterfeit coin; prostitution, and indecent exposure, as well as the more serious crimes of concealing the death of an infant, carnal knowledge without consent, and murder. The constable would have been present in court at Shire Hall when many of these cases came before the Quarter Sessions or Assizes. Once the court had passed sentence there was a wide range of punishments available to the authorities. Capital offences were dealt with at Monmouth County Gaol, as were whippings and sentences of hard labour. Although a police force of four constables and a sergeant was established in Monmouth in 1836, uncertain finances meant that within two years the force was reduced to just two constables. Four railways were built to serve Monmouth between 1857 and 1883: the Coleford, Monmouth, Usk and Pontypool Railway, the Ross and Monmouth Railway, the Wye Valley Railway, and the Coleford Railway. All of these closed between 1917 and 1964. In 1896 a hydroelectric power station was built on the River Monnow at