1d. for a single letter 2d. " double " 3d. " triple " 4d. " an ounce letter. 1812 (52 GEO. III, CAP. 88). Within Great Britain-- For a single Letter. Not exceeding 15 miles 4d. Above 15 but not exceeding 20 miles 5d. " 20 " " 30 " 6d. " 30 " " 50 " 7d. " 50 " " 80 " 8d. " 80 " " 120 " 9d. " 120 " " 170 " 10d. " 170 " " 230 " 11d. " 230 " " 300 " 12d. " 300 " " 400 " 13d. " 400 " " 500 " 14d. " 500 " " 600 " 15d. " 600 " " 700 " 16d. " 700 miles 17d. These rates were re-enacted by I Vict., cap. 34, § 3. The usual increased charges for double, treble, and ounce letters applied throughout. Additional rates were charged in respect of conveyance by packet boat, e.g. for a single letter between Holyhead and Dublin, 2d.; in respect of Menai Bridge, 1d.; in respect of Conway Bridge, 1d.; and in respect of any letter conveyed in Scotland by a mail carriage with more than two wheels, 1/2d. (See 1 Vict., cap. 34, §§ 3, 5, 6 and 7).[674] By 2 and 3 Vict., cap. 52, the Treasury was empowered to regulate rates of postage, and subsequent changes have been made by Treasury Warrant. 1840. Not exceeding 1/2 ounce (uniform rate 1d. irrespective of distance of transmission). " 1 ounce ( " " " ). 2d. For each additional ounce, or fraction of an ounce, 2d. 1865. Rate for letters exceeding 1 ounce in weight reduced to 1d. for each 1/2 ounce, or fraction of 1/2 ounce, after the first ounce. 1871. Not exceeding 1 ounce 1d. " 2 ounces 1-1/2d. For every additional 2 ounces or fraction of 2 ounces up to 12 ounces, 1/2d. For letters exceeding 12 ounces in weight, 1d. per ounce, including the first ounce. 1885. Rate of 1/2d. per ounce after the second ounce continued without limit. 1897. Not exceeding 4 ounces 1d. For every 2 ounces, or fraction of 2 ounces, thereafter, 1/2d. 1915. Not exceeding 1 ounce 1d. " 2 ounces 2d. For every 2 ounces, or fraction of 2 ounces, thereafter, 1/2d. * * * * * II. FOREIGN RATES IN THE BRITISH SERVICE