The history of the Rank of Attraction of the Peixinho, can be said, starts when the ink of the penxs of the etnlogo Curt Nimuendaj scribbled the first letter of this told absurd exploit in its Report on the Chavantes, in 1913. It imposes here to the researcher the examination of the official documentation under a prism little explored, which is, looking for to filter the vision of world of the dominant layers (Axe, 1987:22), opening space for a microssocial history in way that accumulates of stocks the daily one of social ways kept out of society them institutions to be able (Days, 1984:8). In other words, if it requires here a boarding that explores the potentiality of the available documentation, in order to allow an analysis — however constructed of inside of the document for it are, however constructed of the context where the facts had occurred for inside of the produced text –, seing indistinctly the relations. The idea to congregate the Ofai and other aboriginals of the south of the State in the region of the Peixinho, must be said immediately, after did not survive to the first year its installation. The available documents and notations on this Aboriginal Rank are rare, what it makes the research to appeal the beginning of the systematic diffidence, with the exercise of the had comparison of the certifications (Cardoso, 1982:53). When, Michel de Foucault would not say, to revalorizar to know minors while sources to delimit new places of diverse comment of the purely institucional one. The personage who of the visibility to this episode is one such Joaquin Ribeiro, who of certain form, tears the curtain of regional history for this intended construction and that he comes to the fire, has accurately one century after the facts to have occurred. Cuiabano, of numerous family, it literally enters in the hinterland and soon it sets to cover the sub-basin of the Medium brown river in search of an area to install its small farm, choosing of ready lands delinquents to the brook of the Peixinho.