Diodorus Siculus (book v. chap. ii.) seems to refer to America in the following: "Over-against Africa lies a very great island in the vast ocean, many days' sail from Libya westward. The soil is very fruitful. It is diversified with mountains and pleasant vales, and the towns are adorned with stately buildings." He then alludes to the Phoenicians sailing along the Atlantic coast of Africa. The theory that the land forming the bed of the Atlantic Ocean between Brazil and Africa is a vast sunken tract is hardly defensible. The remnants of Cape Verd and Ascension Islands, and the numerous rock-formations and sand-banks surveyed with great accuracy by Bauche, have been submitted in its favor. Traditions exist that a people on the Mediterranean, sailing through the Straits of Gibraltar, the ancient Calpe, were driven westward by a storm, and were heard of no more. It is thought they reached the American coast. Some time since, at a meeting of the Mexican Geographical Society, it was stated that some _brass tablets_ had been discovered in the northern part of Brazil, covered with Phoenician inscriptions, which tell of the discovery of America five centuries B.C. They are now in the museum of Rio Janeiro. They state that a Sidonian fleet left a port of the Red Sea, rounding the Cape of Good Hope, and following the southeast trade-winds until the northeast trade-winds prevented farther progress north, and they were driven across the Atlantic. The number of the vessels, the number of the crews, the name of Sidon as their home, and many other particulars, are given. It is given as veritable history that a farmer near Montevideo, South America, discovered in one of his fields, in 1827, a flat stone which bore strange and unknown characters; and beneath this stone was a vault made of masonry, in which were deposited two ancient swords, a helmet, and a shield. The stone and the deposits were brought to Montevideo, and most of the inscriptions of the former were sufficiently legible to be deciphered. They ran as follows: "_During the dominion of Alexander, the son of Philip, King of Macedon, in the sixty-third Olympiad, Ptolemais._" On the handle of one of the swords was a man's portrait, supposed to represent Alexander. The helmet had on it fine sculptured work, representing Achilles dragging the corpse of Hector around the walls of Troy. This would seem to point to an early Grecian discovery of America. Humboldt cites a passage of Plutarch, in which he thinks that both the Antilles and the great continent itself are described. In "Varia Historia," book iii. chap, xviii., Ælian tells how one Theopompus relates the particulars of an interview between Midas, King of Phrygia, and Silenus, in which the latter reported the existence of a great continent beyond the Atlantic, "larger than Asia, Europe, and Libya together."