Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Edinburgh and Dalkeith Railway, also called the Innocent Railway, was Edinburgh's first railway. It carried coal from the mines in Lothian to its city centre terminus at St Leonards. It is now closed. It received royal assent on 26 May 1826 as a horse-drawn tramway to the Scotch gauge, of 4 ft 6 in, to link various coal mines to the south east of Edinburgh. The original Act of Parliament authorised Pds. 10,125 of joint stock capital, and the main line was opened in part for traffic in July 1831. Further parts were opened in October, with passengers first being carried in July 1832.