ARTICLE 13. Except in pursuance of any treaty or engagement made as provided in Article 4 of this Convention, no other or higher duties shall be imposed on the importation into the South African Republic of any article coming from any part of her Majesty's dominions than are or may be imposed on the like article coming from any other place or country; nor will any prohibition be maintained or imposed on the importation into the South African Republic of any article coming from any part of her Majesty's dominions which shall not equally extend to the like article coming from any other place or country. And in like manner the same treatment shall be given to any article coming to Great Britain from the South African Republic as to the like article coming from any other place or country. These provisions do not preclude the consideration of special arrangements as to import duties and commercial relations between the South African Republic and any of her Majesty's colonies or possessions. ARTICLE 14. All persons, other than natives, conforming themselves to the laws of the South African Republic (_a_) will have full liberty, with their families, to enter, travel, or reside in any part of the South African Republic; (_b_) they will be entitled to hire or possess houses, manufactories, warehouses, shops, and premises; (_c_) they may carry on their commerce either in person or by any agents whom they may think fit to employ; (_d_) they will not be subject, in respect of their persons or property, or in respect of their commerce or industry, to any taxes, whether general or local, other than those which are or may be imposed upon citizens of the said Republic. ARTICLE 15. All persons, other than natives, who established their domicile in the Transvaal between the 12th day of April 1877 and the 8th of August 1881, and who within twelve months after such last-mentioned date have had their names registered by the British Resident, shall be exempt from all compulsory military service whatever. ARTICLE 16. Provision shall hereafter be made by a separate instrument for the mutual extradition of criminals, and also for the surrender of deserters from her Majesty's forces. ARTICLE 17. All debts contracted between the 12th April 1887 and the 8th August 1881 will be payable in the same currency in which they may have been contracted. ARTICLE 18. No grants of land which may have been made, and no transfers or mortgages which may have been passed between the 12th April 1877 and the 8th August 1881, will be invalidated by reason merely of their having been made or passed between such dates. All transfers to the British Secretary for Native Affairs in trust for natives will remain in force, an officer of the South African Republic taking the place of such Secretary for Native Affairs.