The National Intelligencer And Washington Advertiser

A third letter from M. Humboldt, concerning his travels in South America and Mexico, was lately read in the National Institute of France. In this he related the observations which he had made in his Atlantic Ocean, at the top of the Peak of Teneriffe, and in the province of New Andalusia. In the second he described the operations performed in the province of Venezuela, and the plains of Guzacco, where he made some curious experiments on the gymnotus electricus. In the third memoir he has a short account of his navigation to the Oronoko, Rio Negro, and the Carony, executed with great danger, to determine astronomically the communication of the Orinoco and the Amazons river. The parts of his memoirs which contain an account of the geography, botany, and mineralogy, of those countries, as well as of the manners and customs of the people, will be shortly published.

Democrat.