Txemã, the primary cacique (chief) of the Matis tribe, hunting with his blowgun and poison darts.  Note the monkey mandible on the quiver that is used to hold clay.  The clay is used as ballast on the anterior end of the darts.  In addition, the quiver contains rounded wooden sticks that are used to manually make fire by rubbing them against a base board to produce friction.  The two woven sacks hanging from the quiver contain kapok cotton that is applied to the dart shaft which allows air compression that propels the poison dart.