And all drop letters, or letters placed in the post office, not for transmission through the mail, but for delivery only, shall be charged with postage at the rate of one cent each, and all letters which shall hereafter be advertised as remaining over or uncalled for in any post office, shall be charged with one cent each in addition to the regular postage, both to be accounted for as other postages now are. Section 2. And be it further enacted, that it shall be unlawful for any postmaster or other person, to sell any postage stamp or stamped envelope for any larger sum than that indicated upon the face of such postage stamp, or for a larger sum than that charged therefor by the Post Office Department. [Here follows the penalty for so doing.] Section 3. And be it further enacted: That for the greater security of valuable letters posted for transmission in the mails of the United States, the Postmaster General be, and hereby is authorized to establish a uniform plan for the registration of such letters on application of parties posting the same, and to require the prepayment of the postage, as well as a registration fee of five cents, on every such letter or packet, to be accounted for by postmasters receiving the same, in such manner as the Postmaster General may direct: Provided, however, that such registration shall not be compulsory: and shall not render the Post Office Department, or its revenues liable for the loss of such letter or package, or the contents thereof. By this Act there was established for the first time compulsory prepayment, at a uniform rate of 3 and 10 cents, according as the distance was less or greater than 3,000 miles, upon letters in the United States, and the Act of the XXXIV Congress, Session III, Chapter 1, approved January 2d, 1857, entitled: "An Act to provide for the compulsory Prepayment of Postage on all transient printed matter," which provided, that such postage "shall be prepaid by stamps or otherwise, as the Postmaster General may direct," completes the legislation upon the subject, so far as it is of interest here, up to the year 1861. Upon the approval of this Act, the following circular, dated at Washington, March 12th, 1855, was issued to postmasters: NEW POSTAGE ACT. INSTRUCTIONS TO POSTMASTERS. The particular attention of Postmasters and others is invited to the annexed Act, passed at the last session of Congress. It will be observed: 1st. That from and after April 1st, 1855, the single rate of postage on a letter conveyed in the mail, for any distance in the United States, not exceeding three thousand miles, is three cents, and for any distance exceeding three thousand miles, ten cents. 2nd. That from and after April 1st, 1855, prepayment by stamps, stamped envelopes or in money is compulsory.