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 County, California the federal Agency for Toxic Substances and Disease Registry found that some student athletes, coaches and school workers had received substantial exposures. The inside of the school needed to be cleaned of dust. The population ranking of the following table is based on the 2010 census of El Dorado County. † "county seat" El Dorado County, California El Dorado County, officially the County of El Dorado, is a county in the U.S. state of California. As of the 2010 census, the population was 181,058. The county seat is Placerville. El Dorado County is part of the Sacramento-Roseville-Arden-Arcade, CA Metropolitan Statistical