_April 17th_. I thought of a nation: 1793. 1851. Population 3,939,325 24,267,488 Imports £6,739,130 £38,723,545 Exports £5,675,869 £32,367,000 Tonnage 520,704 3,535,451 Lighthouses, beacons, and lightships 7 373 Cost of | Projected |Cost per | in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ | | | including Maine, New | | | Per mile | per annum |of railway| run by | on | per annum |of railway| run by | on | per day. | trains. | capital.