Orange (colour) it contains arsenic and is highly toxic. It was also used as a fly poison and to poison arrows. Because of its yellow-orange colour, it was also a favourite with alchemists searching for a way to make gold, in both China and the West. Before the late 15th century, the colour orange existed in Europe, but without the name; it was simply called yellow-red. Portuguese merchants brought the first orange trees to Europe from Asia in the late 15th and early 16th century, along with the Sanskrit "naranga", which gradually became part of several European languages: "naranja" in Spanish, "laranja"
El Dorado, Kansas El Dorado, Kansas El Dorado ( ) is city and county seat of Butler County, Kansas, United States. It is situated along the Walnut River in the central part of Butler County and located in south-central Kansas. As of the 2010 census, the city population was 13,021. El Dorado was laid out and platted in 1868. The name is of Spanish origin meaning "golden land". El Dorado was incorporated in 1870. In 1877, the Florence, El Dorado, and Walnut Valley Railroad Company built a branch line from Florence to El Dorado; in 1881 it was extended to Douglass, and later