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 | | Delaware, and Maryland | 3,503 | 27,952,500 | 2,020 | 7,979 | | Receipts | Expenses. | Profits. --------------------------------------+----------+------------+---------- Total average receipts, expenses, | | | |Number of | | | | | | | Massachusetts, Rhode | | | Florida, and Alabama | 2,103 | 8,253,130 | 1,283 | 3,919.