6. Cause to be prepared and distributed Postage Stamps, necessary for the prepayment of Postages under this Act, also stamped envelopes for the like purpose; 7. [_Make arrangements concerning Posts and Postal business with postal authorities outside of Canada._] * * * * * 11. Prescribe and enforce such Regulations as to letters directed to be registered as to him may seem necessary, in respect to the registration of letters and other matter passing by Mail, as well between places in Canada, as between Canada and the United Kingdom, any British Possession, the United States or any other Foreign Country, and to the charge to be made for the same; and also in respect to the registration by the officers of the Post Office of letters unquestionably containing money or other valuable enclosure when posted without registration by the senders of the same, and to imposing a rate of two cents registration charge upon such letters; * * * * * 14. Establish and provide Street Letter Boxes or Pillar Boxes or Boxes of any other description for the receipt of letters and such other mailable matter as he may deem expedient, in the streets of any City or Town in Canada, or at any Railway Station or other public place where he may consider such Letter Boxes to be necessary; 15. Grant licenses revocable at pleasure, to Agents other than Postmasters, for the sale to the Public of Postage Stamps and Stamped Envelopes, and allow to such Agents a commission of not exceeding five per cent, on the amount of their sales. RATES OF POSTAGE. 19. On all letters transmitted by Post for any distance within Canada, except in cases herein otherwise specially provided for, there shall be charged and paid one uniform rate of three cents per half ounce in weight, any fraction of an ounce being chargeable as a half ounce, provided that such three cents postage rate be prepaid by postage stamps or in current coin at the time of posting such letters; and when such letters are posted without prepayment being made thereon, then and in such case it shall be lawful to charge upon letters so posted unpaid a rate of five cents per half ounce. 20. On letters not transmitted through the mails, but posted and delivered at the same Post Office, commonly known as local or drop letters, the rate shall be one cent, to be in all cases prepaid by postage stamp affixed to such letters. 21. [_Seamen and Soldiers, etc. in Her Majesty's service, entitled to receive and send letters on payment of a certain special sum in lieu of all British postage, shall be freed likewise from Canadian postage._]