sentences:  In 1863 the Dublin Ballast Board funded Wigham's research and the new gas light was installed in the Baily Lighthouse, they then converted other lighthouses until Trinity House prohibited further conversion of lighthouses from oil to gas.After pressure from the Irish Parliamentary Party In 1871 trials were conducted at the two Happisburgh Lighthouses comparing oil with gas.Douglass reported that "the large gas burner was ex-focal and therefore that it was totally useless and wasted".