Note:  Do not rely on this information. It is very old.

Cahan

Cahan, a Brazilian nation, whose domain lies between the Miamaia, Escopil, and Igatimi rivers, in the province of Mato-Grosso. They are strictly a forest people, seeking the shelter of the thickets against their hereditary foes, the Gaicurus. Like the Pueblos Indians, they build large houses which accommodate many families; dress, a kind of cotton sack with head- and arm-holes; arms, the bow and poisoned arrow; ornament, a cylinder of transparent rosin inserted in a hole in the lower lip, answering to the wooden disk worn in the same way by the Botocudos. Despite their savage state the Cahans till the forest glades, where they grow cotton for the national dress, besides some corn and edible roots.

Click for more about Grosso