“They discover an amazing sagacity, and acquire, with the greatest readiness, any thing that depends upon the attention of the mind. By experience, and an acute observation, they attain many perfections to which Americans are strangers. For instance, they will cross a forest or a plain, which is two hundred miles in breadth, so as to reach, with great exactness, the point at which they intend to arrive, keeping, during the whole of that space, in a direct line, without any material deviations; and this they will do with the same ease, let the weather be fair or cloudy. With equal acuteness they will point to that part of the heavens the sun is in, though it be intercepted by clouds or fogs. Besides this, they are able to pursue, with incredible facility, the traces of man or beast, either on leaves or grass; and on this account it is with great difficulty they escape discovery. They are indebted for these talents not only to nature, but to an extraordinary command of the intellectual qualities, which can only be acquired by an unremitted attention, and by long experience. They are, in general, very happy in a retentive memory. They can recapitulate every particular that has been treated of in council, and remember the exact time when they were held. Their belts of wampum preserve the substance of the treaties they have concluded with the neighbouring tribes for ages back, to which they will appeal and refer with as much perspicuity and readiness as Europeans can to their written records. “The Indians are totally unskilled in geography, as well as all the other sciences, and yet they draw on their birch-bark very exact charts or maps of the countries they are acquainted with. The latitude and longitude only are wanting to make them tolerably complete. “Their sole knowledge in astronomy consists in being able to point out the polar star, by which they regulate their course when they travel in the night. “They reckon the distance of places not by miles or leagues, but by a day’s journey, which, according to the best calculation I could make, appears to be about twenty English miles. These they also divide into halves and quarters, and will demonstrate them in their maps with great exactness by the hieroglyphics just mentioned, when they regulate in council their war-parties, or their most distant hunting excursions.”—Lewis and Clarke’s _Travels_.