Life
Ulloa was born in Seville, Spain. His father was an economist. Ulloa entered the navy in 1733. In 1735, he, along with fellow Spaniard Jorge Juan, was appointed to the French Geodesic Mission, a scientific expedition which the French Academy of Sciences was sending to present-day Ecuador to measure a degree of meridian arc at the equator.
He remained there from 1736 to 1744, during which the two Spaniards discovered the element platinum. In 1745, having finished their scientific labours, Ulloa and Jorge Juan prepared to return to Spain, agreeing to travel on different ships in order to minimize the danger of losing the important fruits of their labours.
The ship upon which Ulloa was travelling was captured by the British, and he was taken to England as a prisoner. In that country, through his scientific attainments, he gained the friendship of the men of science, and was made a Fellow of the Royal Society of London. In a short time, through the influence of the president of this society, he was released and was able to return to Spain. He published an account of the people and countries he had encountered during the French Geodesic Mission (1748), which was translated into English as A Voyage to South America.
He became prominent as a scientist and was appointed to serve on various important scientific commissions. He is credited with the establishment of the first museum of natural history, the first metallurgical laboratory in Spain, and the observatory of Cadiz. In 1751, de Ulloa was elected a foreign member of the Royal Swedish Academy of Sciences.
In 1758 he returned to South America as governor of Huancavelica in Peru and the general manager of the quicksilver mines there. He held this position until 1764.
He arrived on 5 March 1766 in New Orleans to serve as the first Spanish governor of West Louisiana. The French colonists refused to recognize Spanish rule, and de Ulloa was expelled from Louisiana by a Creole uprising during the Louisiana Rebellion of 1768.
For the remainder of his life, he served as a naval officer. In 1779 he became lieutenant-general of the naval forces. Ulloa died at Isla de Leon, Cádiz, in 1795.
Read more about this topic: Antonio De Ulloa
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