27. [_Foregoing rates subject to such conditions as may be agreed upon between Canada and any other country._] 28. [_Postage on unpaid letters is due from addressee, or if refused may be recovered with costs by civil action from sender._ (See 13^o--14^o Vict. Cap. 17, Sec. 12.)] 29. In all cases where letters and other mailable matter are posted for places without the limits of Canada, on which stamps for pre-payment are affixed of less value than the true rate of Postage to which such letters are liable,--or when stamps for prepayment are affixed to letters addressed to any place as aforesaid for which prepayment cannot be taken in Canada,--the Postmaster General may forward such letters, charged with postage, as if no stamp had been affixed. 30. And for avoiding doubts, and preventing inconvenient delay in the posting and delivery of letters,--no Postmaster shall be bound to give change, but the exact amount of the postage on any letter or other mailable matter shall be tendered or paid to him in current coin as respects letters or other things delivered, and in current coin or postage stamps as the case may require in respect to the letters or other things posted. 31. [_The Postmaster General may make reasonable compensation to Masters of vessels not Post Office Packets for conveyance of ship letters from foreign ports to Canada._] 32. [_Postmaster General has exclusive privilege of collecting, conveying and delivering letters, etc._; $20 _penalty for infraction_. (See 13^o--14^o Vict. Cap. XVII. Sec. 9.)] * * * * * 35. [_The Postmaster General may employ Letter Carriers, and charge two cents for delivery of a letter and one cent for a newspaper or pamphlet._ (See 14^o--15^o Vict. Cap. LXXI. Sec. 15.)] 36. It shall be lawful for the Postmaster General, with the consent of the Governor in Council, to establish in any city, when he shall deem it expedient, a system of free delivery by Letter Carrier of letters brought by mail and he may direct that from the time that such system is established, no charge shall be made for the delivery of such letters by Letter Carriers in such city, and further that on drop or local letters when delivered by Letter Carrier in such city, one cent only per half ounce shall be charged in addition to the ordinary local or drop letter rate. 37. [_Postmaster General may establish a parcel post._ (See 22^o Vict. Cap. XVII. Sec. 5.)] 38. [_Usual franking of official matter._ (See 18^o Vict. Cap. LXXIX. Secs. 4, 5, 6, 7 and 24^o Vict. Cap. XXV. Sec. 6), _but limited to transmission in Canada_.] * * * * *