Antonio de Ulloa (1716–95) was a Spanish scientist and mathematician. In 1734 he was asked by Philip V of Spain to join the French geodesic expedition to measure the circumference of the Earth at the equator, and accordingly in 1735 Ulloa and his fellow scientist Jorge Juan y Santacilia (1713–73) travelled to South America, staying until 1744. These two volumes contain the English translation of Ulloa`s account of South America, first published in 1758. The work was very popular, producing five subsequent editions: this reissue is of the fourth edition of 1806. It provides valuable insights into the social, religious and economic institutions of colonial South America. Volume 1 includes an ethnological discussion of the indigenous people in Quito, and Volume 2 contains detailed descriptions of the cities and provinces of Lima, Concepción (in Chile) and Buenos Aires.