the former case a multiple standard is available; in the latter case what is needed to discharge balances is a commodity of universal demand. When credit is introduced its sphere is intragroup. The debtors would like the money to be what every one can get. The creditors would like it to be what every one wants. +144. Various predominant wares.+ In the northeastern horn of Africa the units of value which are used as money are salt, metal, skins, cotton, glass, tobacco, wax, coffee beans, and korarima. Cattle and slaves are also used as units of value from time to time amongst the Oromo. Salt is used as money in prismatic pieces, twenty-two centimeters long and three centimeters to five millimeters broad at the bottom, which weigh from seven hundred and fifty grams to one and one half kilograms each. It is carried in bundles of twenty to thirty pieces, wound in leaves.[286] The Galla use rods of iron six to twelve centimeters long, somewhat thicker in the middle, well available for lance ends, one hundred and thirty of which are worth one thaler in Schoa; also pieces of copper, tin, and zinc; calf-skins; black, printed, and unprinted cotton cloth; pieces of cloth; coarse red cotton yarn (for knitting); and strings of beads. The universal and intergroup money is the Maria Theresa thaler weighing 571.5 to 576 English grains.[287] Cameron mentions the exchange of intergroup money for intragroup money at a fair at Kawile, on the eastern shore of Lake Tanganyika. At the opening of the fair the money changers gave out the local money of bugle beads, which they took in again when the fair closed.[288] On the French Congo the boatmen were paid with paper bons, which were superseded by metal ones in 1887. When the recipient takes his bon to the station he obtains at first a number of nails, beads, or other articles for it, which he can then exchange for what he wants. Tokens of copper are issued at Franceville, stamped "F," of different shapes and sizes, but always of the same shape and size for the same value in French money.[289] At Grand Bassam in West Africa the manilla (bracelet) serves as money. For six months the natives give oil for these bracelets of metal mixed of copper, lead, zinc, antimony, and iron, which can be closed around the arm or leg of a slave by a blow of the hammer. Then for six months they exchange the bracelets for the European goods which they want.[290] These bracelets were a store of wealth for the black men.[291] The Kru have few cattle, which pass from one to another in bride purchases, since these can be made with nothing else. It is impossible to have wives and cattle too until one's daughters grow up.[292] Since the seventeenth century cylindrical (bugle) green-blue beads have been money on the ivory and gold coasts. They come from an ancient cemetery on the Bokabo Mountains and are of Egyptian origin. They were buried with the dead.[293] A local money of stone is reported also from Avetime in Ehveland. It is said to