Who are the Scots?
Thomas Drummond (1797 - 1840) Surveyor and Politician. Invented the 'Drummond Light', somewhat similar to the heliograph, which enabled observation of far-distant points (more than 60 miles). This he adapted for use in Lighthouses. Served as Secretary of State for Ireland, during which time he made clear to the absentee landlords that 'property has its duties as well as its rights'. Also pioneered railway development in Ireland.