included a new pulpit and seating. A marble altarpiece from General George Wade in the sanctuary was removed and replaced with a decorative reredos. Pews installed in the nave during Scott's renovations were replaced with stackable chairs in 2018, a move which was opposed by the Victorian Society leading to a Consistory court case which was decided in favour of the Abbey. In the 1920s Thomas Graham Jackson redesigned the Norman Chapel into a War Memorial Chapel, now Gethsemane Chapel, and added a cloister. New quire screens were installed in 2004, partly to improve the acoustics, topped with 12 carved angels playing musical instruments. A tiled floor dating from the late 13th to early 14th centuries was discovered in August 2018. Work to rebury coffins which had previously been under the abbey and stabilise the floor included the digging of a trench in which the tiles were uncovered. Monuments Within the abbey are 617 wall memorials and 847 floor stones. They include those dedicated to Beau Nash, Admiral Arthur Phillip (first Governor of the colony of New South Wales, which became part of Australia after federation in 1901), James Montague (Bishop of Bath and Wells), Lady Waller (wife of William Waller, a Roundhead military leader in the English Civil War), Elizabeth Grieve (wife of James Grieve, physician to Elizabeth, Empress of Russia), Sir William Baker, John Sibthorp, Richard Hussey Bickerton, William Hoare, Richard Bickerton and US Senator William Bingham. Many of the monuments in the churchyard were carved between 1770 and 1860 by Reeves of Bath. War memorials include those commemorating the First Anglo-Afghan War (1841–42), the First World War (1914–18), and the Second World War (1939–45). The most recent memorial was installed in 1958 to commemorate Isaac Pitman, the developer of Pitman shorthand, who died in 1897. Main organ The first mention of an organ in the abbey dates to 1634, but nothing is known of that instrument. The first properly recorded organ in Bath Abbey was built by Abraham Jordan in 1708. It was modified in 1718 and 1739 by Jordan's son. The specification recorded in 1800 was one of twenty stops spread over three manuals. The compasses of the manuals were extended, one and a half octaves of pedals were added and the instrument renovated in 1802 by John Holland; further repairs were effected by Flight & Robson in 1826. This instrument was removed first to the