<sod>He remained there from 1736 to 1744, during which time the two Spaniards discovered the element [[platinum]] in the area and Ulloa became the first person to write a scientific description of the metal.<ref name="Ferreiro2013">{{cite book|author=Larrie D. Ferreiro|title=Measure of the Earth: The Enlightenment Expedition That Reshaped Our World|url=http://books.google.com/books?id=kAWcsC-6TZoC&pg=PA265|date=20 August 2013|publisher=Basic Books|isbn=978-0-465-02345-5|page=265}}</ref> 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.<eod>
<sod>He remained there from 1736 to 1744, during which time the two Spaniards discovered the element [[platinum]] in the area and Ulloa became the first person to write a scientific description of the metal.<ref name="Ferreiro2013">{{cite book|author=Larrie D. Ferreiro|title=Measure of the Earth: The Enlightenment Expedition That Reshaped Our World|url=https://books.google.com/books?id=kAWcsC-6TZoC&pg=PA265|date=20 August 2013|publisher=Basic Books|isbn=978-0-465-02345-5|page=265}}</ref> 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.<eod>