It should be clearly understood that the post office is not responsible for the safe delivery of a registered letter or parcel. The registration simply makes its transmission more secure, by rendering it practicable to trace it, when passing from one place to another in Canada, from its receipt to its delivery; and when addressed from any place in Canada to any place in the United States, the United Kingdom, or parts abroad, if not to its delivery, at least to the frontier or port of despatch. <tb> POSTAGE STAMPS. [Sidenote: Prices of stamps.] Every postmaster is required to have on hand a sufficient stock of postage stamps, and to sell them to the public at 1 cent, 5 cents, 10 cents, 12-1/2 cents, and 17 cents each. [Sidenote: Envelopes.] Letter envelopes are also provided with medallion, stamps equivalent to 5 cents and 10 cents postage, each. The 5 cent envelopes are sold singly at 6 cents each; 66 cents per dozen; $5.50 per hundred. The 10 cent envelopes are sold singly at 11 cents each; $1.26 per dozen; $10.50 per hundred. [Sidenote: Sale to dealers.] With the approval of the Postmaster General, postage stamps are sold to certain dealers to retail again to the public. [Sidenote: Pre-payment in stamps.] Pre-payment of letters should, in all cases where practicable, be made by postage stamps. [Sidenote: Mutilated stamps.] A mutilated stamp, or a stamp cut in half, is not recognized in pre-payment of postage. [Sidenote: Medallion stamps.] A medallion stamp cannot be accepted in pre-payment of postage if separated from the envelope of which it may have formed a part. [Sidenote: British and foreign.] No British stamps, or stamps of a foreign country, can be received in pre-payment of postage in Canada. [Sidenote: Mode of affixing.] In affixing the stamp to the letter wet slightly the corner of the envelope and the gummed side of the stamp, and gently press the stamp till it is firmly fixed. Stamps should be placed on the front or address side of the letter, and on the right hand upper corner. [Sidenote: Partial payment in.] Letters cannot be pre-paid partly in stamps and partly in money; the pay-postage must be pre-paid either wholly in stamps, or wholly in money. [Sidenote: Insufficient pre-payment.] If the stamps affixed to a letter addressed to any place in British North America be not adequate to the proper postage, the letter is rated with an amount equal to the deficiency. [Sidenote: Do. United States.] Letters addressed to the United States, on which stamps are affixed representing less than the amount of postage to which the letters are liable, are rated with full unpaid postage. [Sidenote: Stamps received for postage.] Postage stamps are received at all post offices in payment of postage on unpaid letters delivered therefrom. <tb> MONEY ORDERS. [Sidenote: Money order offices.]