COMPARATIVE TABLE.

Year 1793.  Year 1851.

Number of States 15 31
Representatives and Senators in Congress 135 295
Population of the United States 3,929,328 23,267,498
Population of Boston 18,038 136,871
Population of Baltimore 13,503 169,054
Population of Philadelphia 42,520 409,045
Population of New York (city) 33,121 515,507
Population of Washington . . . 40,075
Population of Richmond 4,000 27,582
Population of Charleston 16,359 42,983
Amount of receipts into the Treasury $5,720,624 $52,312,980
Amount of expenditures $7,529,575 $48,005,879
Amount of imports $31,000,000 $215,725,995
Amount of exports $26,109,000 $217,517,130
Amount of tonnage (tons) 520,764 3,772,440
Area of the United States in square miles 805,461 3,314,365
Rank and file of the army 5,120 10,000
Militia (enrolled) . . . 2,006,456
Navy of the United States (vessels) (None.) 76
Navy armament (ordnance) . . . 2,012
Treaties and conventions with foreign powers 9 90
Light-houses and light-boats 12 372
Expenditures for ditto $12,061 $529,265
Area of the Capitol 1/2 acre. 4-1/8 acres. 
Number of miles of railroad in operation . . . 10,287
Cost of ditto . . . $306,607,954
Number of miles in course of construction . . . 10,092
Lines of electric telegraph, in miles . . . 15,000
Number of post-offices 209 21,551
Number of miles of post-route 5,642 196,290
Amount of revenue from post-offices $104,747 $6,727,867
Amount of expenditures of Post-Office Department $72,040 $6,024,567
Number of miles of mail transportation . . . 52,465,724
Number of colleges 19 121
Public libraries 35 694
Volumes in ditto 75,000 2,201,632
School libraries . . . 10,000
Volumes in ditto . . . 2,000,000
Emigrants from Europe to the United States 10,000 299,610
Coinage at the Mint $9,664 $52,019,465