230 LA QUESTION DEXTREME-ORIENT I. — His Majesty the King of Siam will cause the prince of Chiangmai to establish and maintain guard stations, under proper officers, on the Siamese bank of the Lalween river, which forms the boundary of Chiangmai, belonging to Siam, and to maintain a sufficient police force for the prevention of murder, robbery, dacoity, and other heinous crimes. II. — If any persons, having committed dacoity in any of the territories of Chiangmai, Lakon, and Lampoonchi, cross the frontier into British territory, the British authorities and police shall use their best endeavours to apprehend them. Such dacoits, when apprehended, shall, if Siamese subjects, be delivered over to the Siamese authorities at Chiangmai; if British subjects, they shall be dealt with by the British officer in the Yoonzaleen district. If any persons, having committed dacoity in British territory, cross the frontier into Chiangmai, Lakon, or Lamproonchi, the Siamese authorities and police shall use their best endeavours to apprehend them. Such dacoits, when apprehended, shall, if British subjects, be delivered over to the British officer in the Yoonzaleen district: if Siamese subjects, they shall be dealt with by the Siamese authorities at Chiangmai. If any persons, whether provided with passports under article IV of this treaty or not, commit dacoity in British or Siamese territory and are apprehended in the territory in which the dacoity was committed,they may be tried and punished by the local Courts without question to their nationality. Property plundered by dacoits, when recovered by the authorities on either side of the frontier, shall be delivered to its proper owners. III. — The Siamese authorities in Chiangmai, Lakon, and Lampoonchi will afford due assistance and protection to British subjects carrying on trade or business in any of those territories, and the British government in India will afford similar assistance and protection to Siamese subjects from Chiangmai, Lakon, and Lampoonchi carrying on trade or business in British territory. IV. — British subjects entering Chiangmai, Lakon, and Lampoonchi from British Burmah must provide themselves^ with