books.google.com.co - A study of Francisco Jose de Caldas y Tenorio, who was born in 1768 in the Spanish colony Nueva Reino de Granada. In the first half of the 18th cent. France sent an expedition to the equator to learn the true figure of the Earth. However, Spain maintained strict control over the colonies' access to books...https://books.google.com.co/books/about/Transactions_of_the_American_Philosophic.html?hl=es&id=5x4LAAAAIAAJ&utm_source=gb-gplus-shareTransactions of the American Philosophical Society. Vol. 84, pt. 5: Francisco José de Caldas : a scientist at work in Nueva Granada