Abstract
This text analyzes the medical reports of doctor Murillo de Campos on an expedition by the Rondon Commission to the Brazilian state of Mato Grosso in 1911. Originally published as a scientific article, the report begins by detailing the nosological profile in the places visited and the customs of the inhabitants. It then presents a detailed fieldwork report into the healing practices of the Bororo indigenous people in eastern Mato Grosso. An investigative approach is employed to describe the therapeutic methods used by the healers, particularly the extensive use of medicinal plants. The analysis demonstrates that Campos acted as an intermediary between medical knowledge and Bororo healing practices.