Juan Ramón Koenig was a Peruvian

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

 scientist.

Biography

He was a priest, and came to Peru in 1655, in the company of the viceroy, the Count of Alba de Aliste, who appointed him chaplain of the hospital of Espiritu Santo. Koenig taught various branches at the college of San Marcos, especially cosmography

Cosmography

Cosmography is the science that maps the general features of the universe, describing both heaven and Earth...

. By royal order he visited in 1672 the principal place's of Peru to take observations of their latitude and longitude, for which purpose he had to construct for himself several mathematical instruments that were not to be obtained in Peru. In 1677 he was appointed successor of Francisco Lozano in the chair of mathematics, and was also appointed royal cosmographer. In 1781 he engraved with his own hands a map of Peru on a silver plate, which was highly praised by the French geographer, Louis Feuillet. When the viceroy, the Duke of La Palata, resolved in 1682 to fortify the city of Lima, Koenig, together with Gen. Venegas Osorio, formed the plan for the fortifications, and directed their execution.

Works

Koenig wrote Problema de la duplicación del Cubo (Madrid, 1678), and from 1680 till 1708 published in Lima daily weather observations under the title of Conocimiento de los tiempos. During his last years he had accumulated much material for a geography of Peru, but, unfortunately, after his death a friend burned nearly all his papers, to avoid making public his private matters, and thus the manuscript was lost.