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.