The Kha villages form the wealth of the Laos, who reside in the valley of the Meh Kong, to the east of the river. The Khas are known to the Siamese as Kha Chays, or slaves, and are treated as such. According to the Laos chief of Luang Prabang, the seven tribes of Khas in his territory are four times as numerous as his Laos subjects. Dr Neis, who has traversed a great part of his State, believes this opinion to be within the mark. Each Kha has to pay a tribute to his Laos or Siamese master. Without the Khas, their lazy, pleasure-loving, opium-smoking masters would have to work, or die of hunger. The extortion practised upon these kindly-dispositioned people has frequently driven them into revolt. In 1879 they joined the Chinese marauders in their attack upon the Laos; and also in 1887, when they sacked and destroyed Luang Prabang, the chief town and capital of the Shan State of that name. The Khas, like all the hill tribes in Indo-China, offer sacrifices to evil spirits, who, according to them, are the cause of all the ills that man is heir to. In a single case of sickness as many as ten or twelve buffaloes, or other animals, are at times offered up. They do honour to their guests and distinguished visitors by calling together the young men of the neighbourhood to drink their health in rice-spirit. Those whom I met were happy, cheery, hard-working men with pleasant faces, which, although flat, were not Mongolian, but, I think, Dravidian in type. Their expression betokened freedom from care, frankness, and good-nature. Those measured by me averaged four feet and nine inches in height, and, like the Negritos of the Andaman Isles, few exceed five feet. Their limbs were symmetrically formed, and altogether the Khas looked vigorous, pliant, and active little men. The Kamooks whom I saw, dressed in jackets and trousers dyed blue similar to those worn by the Burmese Shans, and wore their long hair drawn back from their forehead and fastened in a knot at the back of the head. As long as the King of Siam allows the harmless hill tribes to the east of the Meh Kong to be hunted down, and held and sold as slaves by his subjects, so long should he be abhorred and placed in the same category as the ferocious monsters who have been and are the ruling curses of Africa. The sooner missionaries, American and English, are sent to Luang Prabang, and other places in the valley of the Meh Kong, the sooner will the King of Siam be shamed into putting a stop to the proceedings of the slave-dealers, who, according to French travellers up the Meh Kong, are fast depopulating the hills. There can be little doubt that the Khas, being spirit-worshippers like the Karens, and not Buddhists, would flock into the Christian fold in the same manner that the Karens have done. During our stay near the guard-house, the temperature in the shade varied between 46° and 81°, the extreme cold being at daybreak, and the greatest heat at two o’clock in the afternoon.