The revenue act of 23d December, 1814, added 50 per cent. to the rates last above; but the addition was repealed February 1, 1816, which restored the rates of 1799.

Act of April 9, 1816. Rates for a single-sheet letter,—30 miles or under, 6 cents; 30 to 80 miles, 10 cents; 80 to 150 miles, 12-1/2 cents; 150 to 400 miles, 18-1/2 cents; over 400 miles, 25 cents.

Act of 3d March, 1845. Rates for a single-sheet letter,—300 miles or under, 5 cents; over 300 miles, 10 cents.

Act of 3d March, 1851. Rates for a half-ounce letter,—3000 miles or under, if prepaid, 3 cents, if unpaid, 5 cents; over 3000 miles, double.

Act of 3d March, 1855. Rates for a half-ounce letter,—3000 miles or under, 3 cents; over 3000 miles, 10 cents.

Under this act prepayment was not compulsory, and after January, 1856, prepayment by stamps was required.

[The issue of postage-stamps was first authorized by an act of 3d March, 1847, and subsequently by the act of 3d March, 1851.]

Act of 3d March, 1863. Rate for half-ounce letter, 3 cents everywhere throughout the United States.

DOMESTIC POSTAGE.

The law requires postage on all letters (including those to foreign countries when prepaid), excepting those written by officers of the government, addressed to the department with which they are connected, and on official business, to be prepaid by stamps or stamped envelopes, prepayment in money being prohibited.