Frobisher, a sixteenth-century English explorer, had soil samples from Canada' s Kodlunarn Island examined for gold content  Because high gold content was reported, Elizabeth I funded two mining expeditions  Neither expedition found any gold there  Modern analysis of the island' s soil indicates a very low gold content
Thus the methods used to determine the gold content of Frobisher' s samples must have been inaccurate
Gold was not added to the soil samples collected by Frobisher before the samples were examined.