I am commanded by His Excellency the Governor General, to communicate to you the following instructions, for your guidance in the performance of your duties, under the New Post Office Law of the 13th and 14th Vict., chap. 17, passed at the last Session of the Provincial Parliament, which will take effect, and supersede the Imperial Post Office Acts, hitherto in force in Canada, on and from the 6th day of April next: 1.--From the above date, all Letters transmitted by the Post in Canada, with the exception of Packet Letters to and from the United Kingdom, will be liable to a uniform rate of _Three Pence_, currency, per half-ounce for whatever distance conveyed: prepayment will be optional: the charge increasing according to the weight of the Letter, one single rate for every additional half-ounce, counting the fraction of a half-ounce as a full rate, thus: A Letter, weighing not exceeding 1/2 ounce, will be liable to 3d postage. A Letter, weighing more than 1/2 ounce, and not exceeding 1 ounce, will be liable to 6d Postage. A Letter, weighing more than 1 ounce, and not exceeding 1-1/2 ounces will be liable to 9d Postage, and so on. It will be observed that the above scale differs from that now followed, in advancing one rate for each half-ounce after the first ounce. 2.--The single Packet rate for Letters by the Atlantic Steam Packet Mails to and from England, via the United States, of 1s 2d sterling, if _unpaid_, and 1s 4d currency, if _prepaid_, as also the rate on Letters, by those mails, via Halifax, of 1s sterling, if _unpaid_, and 1s 1-1/2d currency, if _prepaid_, remain unaltered, and the present scale of weights is to remain in force as regards such Letters. Post Masters must be very careful to observe this distinction when taxing letters, weighing over one-ounce, intended for the English Mails. 3.--The regulations now in force with regard to Letters to and from Soldiers and Sailors in Her Majesty's Service, by which under certain conditions such Letters pass through the Post on prepayment of a penny only, remain unaltered. 5.--Letters addressed to New Brunswick, Nova Scotia, Prince Edward's Island, or Newfoundland, are to be rated with the uniform rate of 3d per half-ounce. 6.--Letters to and from the United States will be liable to the uniform rate of 3d per half-ounce, between the Frontier line and the place of posting or place of destination in Canada; and until further arrangements can be made, this charge on Letters from Canada to the United States must be prepaid at the time of Posting.