Wampum the spoken language is. Records and treaties are kept in this manner, and individuals could write letters to one another in this way. Wampum belts were used as a memory aid in oral tradition, and were sometimes used as badges of office or as ceremonial devices in Indian culture such as the Iroquois. The 1820 New Monthly Magazine reports on a speech given by chief Tecumseh in which he vehemently gesticulated to a belt, pointing out treaties made 20 years earlier and battles fought since then. The National Museum of the American Indian repatriated eleven wampum belts to "Iroquois" chiefs
Powder glass beads beads", which were also manufactured by the Krobo. The most common colour of Akoso beads is yellow. There are also green, and rarely blue or black specimens. The glass surface is often worn away at the ends and around the beads' equator, exposing a grey core. The most prevalent decorations, preformed from strips of hot glass, were applied in patterns of criss-crossed loops, longitudinal stripes and circles. Glass from crushed Venetian beads was used for making the glass powder, and the decorative patterns were made of glass derived from Venetian beads, or from small whole Venetian beads such as so-called