CAYENNE, an island of South America, in French Guiana, about eighteen miles in length by ten in breadth. It has the Atlantic Ocean on the north and east, and is separated from the main land of Guiana by the rivers Cayenne and Ouya. The soil is fertile, and that part which faces the north is pleasant and healthy. To the south the country is lower, and abounds in meadows, which are inundated by the periodical rains. The most noted production is Cayenne pepper; coffee, sugar, cotton, cocoa, indigo, maize, cassia, and vanilla, are also raised.