The same method of using the buffalo as the chief unit is employed by the Moïs, among whom a slave is reckoned at 10 buffaloes. Again, among tribes such as the Tjams, with whom the string of copper _cash_ (or sapecs) borrowed from the Chinese, is employed as their lowest unit, a full-grown buffalo = 100 strings;[36] the Mexican _piastre_ or dollar circulates freely as in China, a small pig costs 10 strings, pork by retail costs two strings per lb. (_livre_), ducks cost 1½ to 2 strings. A large caldron costs 3 buffaloes; a handsome gong = 2 buffaloes; a small gong = 1 buffalo; 6 copper platters = 1 buffalo; two swords = 1 buffalo; 2 lances = 1 buffalo; a rhinoceros’ horn = 8 buffaloes; a pair of large elephants’ tusks = 6 buffaloes; a small pair = 3 buffaloes. When the wild people have dealings with the more civilized peoples of the plain, who employ the Chinese cash and silver dollars, a large buffalo = 100 strings of cash, a small one = 50 strings; a fine horse = 100 strings; a she goat = a piece of cloth. The Orang Glaï have often to buy elephants’ tusks, at the rate of 8 buffaloes for a pair, or 8 bars of silver (640 francs). The Szins of Kharang have often to pay a tax of a buffalo per hut, or for the whole village 10 buffaloes, the horns of which must be at least as long as their ears[37]. In Cambodia iron ingots[38] form a special kind of money. These ingots are not weighed, but they are as long as from the base of the thumb to the tip of the forefinger; they are in breadth two fingers, and one finger in thickness in the middle, tapering off to either end. Cowries and other shells seem to have gone out of use altogether among these tribes, but we may recognize in the practice of reckoning the _cash_ by the string a distinct survival of the olden time when shells were so employed. It is of great importance to note that where silver has come into use, its unit, the bar, is equated to the buffalo, the unit of barter, just as we find the Homeric gold Talent equal to the ox.