sentences:  An extension of the line to Poulaphouca was opened in 1895, and the Blessington and Poulaphouca Steam Tramway was incorporated, with through-running from Terenure from 1896 until the extension was closed in 1927.In 1911, a major proposal was put forward for the electrification of the line as far as Crooksling, but the intervention of World War I meant that this was never put into effect.In 1929, the Paragon Omnibus Company began operating a through bus service between Blessington and the city centre, eliminating the requirement for passengers to transfer between the DBST and the Dublin tram at Terenure.