SELK'NAM RELIGION. The Selk'nam (also known as the Ona) inhabited the largest island of the Tierra del Fuego archipelago, the Isla Grande. The population of the Selk'nam and their neighbors the Haush (Mánekenka), who lived in the southeastern tip of the island and had a similar culture, was estimated by Martin Gusinde (1931) at approximately four thousand in 1880. During the final decades of the nineteenth century most of the Indians either were slaughtered by the white colonizers or died of diseases brought by them. In 1919 Gusinde (1931) counted 279 Selk'nam and Haush. Fifteen years later, following several epidemics, there were fewer than one hundred. When this author first went to Tierra del Fuego in 1965 there were about fifteen Selk'nam and Haush, including the mestizos. In 1985 there were four, all of whom spoke fluent Spanish and three of whom also had some knowledge of the...