FERREIRA DE ARAUJO GUIMARAES, Manoel (ferray'erah), Brazilian soldier and author, born in Bahia, 5 March 1777; died there. 24 October 1838. He went to Portugal to finish his education, and was matriculated at, the royal naval academy in 1798. As soon as he had finished his course he was appointed assistant professor of that school, and given the commission of lieutenant. Subsequently he lectured on mathematics, worked for the military society, and published a translation of the work "Analyse de Cousin," but afterward returned to Bahia, where the captain general of Brazil took him under his protection. Soon afterward he was called to Rio Janeiro and appointed captain of the engineer corps, He organized the naval academy, and opened its classes on 1 March 1809, and in 1811 became director of the military academy. In 1813 he was promoted to major, and began the editorship of "La Gaceta do Rio de Janeiro" and "Patriota."

In 1821, when he had attained the rank of colonel, he asked to be relieved from the direction of the academy, and also ceased his connection with the "Gaceta." Wishing to dedicate himself to the cause of independence, he began the publication of the paper "Espelho." In 1823 he was elected to the Brazilian legislature as a representative drom Bahia, was a member of the navy and war commission, and took charge again of the military academy. In 1824 he was made chief of the topographical committee. In 1826 he again became editor of the "Gaceta do Rio de Janeiro," and was promoted brigadier of engineers. Although Ferreira had retired from public service in 1831, the government of Bahia persuaded him to accept the chair of geometry and mechanics at the naval school. On 7 November 1837, a republican revolution began, and, although Brigadier Ferreira remained loyal to his government, his son took part in the movement and was court-martialed, 23 June 1838. Young Ferreira was ably defended by his father, but was sentenced to death and executed, and the elder Ferreira did not long survive him. He published Textbooks on astronomy and geodesy (1811), geometry, and applied mechanics (1835).