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Francisco Calheiros da Graça

Francisco Calheiros da Graça, Brazilian military, hydrographer and cartographer 
(Maceió 03 July 1849 - Angra dos Reis, Rio de Janeiro State 21 January 1906)
 
 
Performed hydrographic surveys in various points of Brazil (1882-95).
 
Published Memoria sobre a origem e causa do aquecimento das aguas do Gulf Stream (1874), translated to French in 1875.
 
Invented sea-gauges protractor presented in Transferidor de sondas. Investigações sobre instrumentos destinados a hidrografia, 1878.
 
He was Correspondent Member, Bureau de Longitudes.