MAYO, one of the Cape de Verd Islands, situated in the Atlantic Ocean, near 300 miles from Cape Verd in Africa, is about 21 miles in circumference, Long. 23.8. W. Lat. 15.10. N. The shore affords good anchorage in the sandy bays between the promontories; it possesses but one spring which rises near its centre, the water of which runs off in a small stream through a valley confined by hills. The soil is indebted to the nightly dew and the showers that fall in the wet season for the only humidity which it receives, and is consequently dry and barren. There are three small towns in the island, the principal of which is called Pinosa. The chief commodity for export is salt, great quantities of which are gathered from the bays and ponds during the dry seasons. On the west side of the Island is a large salt pond, two miles long and half a mile in breadth. The surrounding sea abounds in great varieties of fish; the principal fruits are figs, water melons, citrons, and oranges, and a kind of bean which forms a large part of the ordinary diet of the natives. The population is estimated at about 7000.