The Andes is a great chain of mountains in South America, which, running from the most northern part of Peru, to the Straits of Magellan, between 3000 and 4000 miles, are the longest and most remarkable in the world. The Spaniards call them the Cordilleras de los Andes: they form two ridges; the lowermost of which is overspread with woods and groves, and the uppermost covered with everlasting snow. Those who have been at the top, affirm that the sky is always serene and bright, the air cold and piercing, and yet so thin that they were scarce able to breathe. When they looked down-wards, the country was hid by the clouds that hovered on the mountain's sides.

The mountains just mentioned, which have been frequently ascended, are much inferior in height to many others in this enormous chain.