[_Rolls his brineless tide._ l. 411. Some philosophers have believed that the continent of America was not raised out of the great ocean at so early a period of time as the other continents. One reason for this opinion was, because the great lakes, perhaps nearly as large as the Mediterranean Sea, consist of fresh water. And as the sea-salt seems to have its origin from the destruction of vegetable and animal bodies, washed down by rains, and carried by rivers into lakes or seas; it would seem that this source of sea-salt had not so long existed in that country. There is, however, a more satisfactory way of explaining this circumstance; which is, that the American lakes lie above the level of the ocean, and are hence perpetually desalited by the rivers which run through them; which is not the case with the Mediterranean, into which a current from the main ocean perpetually passes.] [_Caffia._ l. 413. Ten males, one female. The seeds are black, the stamens gold-colour. This is one of the American fruits, which are annually thrown on the coasts of Norway; and are frequently in so recent a state as to vegetate, when properly taken care of, the fruit of the anacardium, cashew-nut; of cucurbita lagenaria, bottlegourd; of the mimosa scandens, cocoons; of the piscidia erythrina, logwood-tree; and cocoa-nuts are enumerated by Dr. Tonning. (Amæn. Acad. 149.) amongst these emigrant seeds. The fact is truly wonderful, and cannot be accounted for but by the existence of under currents in the depths of the ocean; or from vortexes of water passing from one country to another through caverns of the earth. Sir Hans Sloane has given an account of four kinds of seeds, which are frequently thrown by the sea upon the coasts of the islands of the northern parts of Scotland. Phil. Trans. abridged, Vol. III. p. 540. which seeds are natives of the West Indies, and seem to be brought thither by the gulf-stream described below. One of these is called, by Sir H. Sloane, Phaseolus maximus perennis, which is often also thrown on the coast of Kerry in Ireland; another is called, in Jamaica, Horse-eye-bean; and a third is called Niker in Jamaica. He adds, that the Lenticula marina, or Sargosso, grows on the rocks about Jamaica, is carried by the winds and current towards the coast of Florida, and thence into the North-American ocean, where it lies very thick on the surface of the sea.