Superstition in a nation depends very much upon climate, temperament, religion, and occupation. Notions entertained of supernatural beings or things, though generally based upon one broad feature common to all countries, differ so essentially respecting the form, character, habits, and powers of these beings that they appear to have been drawn from sources widely removed. The advance of knowledge and the truths of evolution have almost convinced us that belief in the supernatural (unrevealed) is nothing but the creation of the human brain, impressed upon the imagination of our ancestors at periods when such impressions were likely to be strong and permanent, and transmitted within the ironbound certainty of the laws of heredity. Legends have forever been beheld through different prejudices and impressions. They have constantly changed with the media and vistas through which they have been viewed. Hence their different shape, character, and attributes in different countries, and the frequent absence of rational analogy with respect to them even in the same.