4. _Etesian winds._ The ancients gave this designation, from _annual_, to periodical winds which blow from the north-east in the summer months, for about six weeks, throughout the Mediterranean and adjacent countries, but mostly in the eastern branch, including the Adriatic and the Archipelago. The term Meltem is now applied to them by the fishermen, a corruption, probably, of _mal temps_, referring to the fury with which they blow, and to the danger to which their small craft become exposed. On land, they are more favorably regarded. These winds are noticed by Pliny, Seneca, and Cicero, the latter of whom says, that in Italy they are equally comfortable and salutary to men, beasts, and birds, and likewise beneficial to vegetation, by moderating the violent heat of the weather during the inclement season of the dog-days. In the Levant, they commence toward the middle of July, about nine in the morning, continuing only in the day-time. The sun at that season is powerfully heating the earth under the tropic of Cancer, and rarefying the atmosphere south of the Mediterranean, thus giving birth to the north-east etesian gales. 5. _Khamsin_, _Samiel_, _Simoom_, _Harmattan_, _Sirocco_. These are local titles of winds differing greatly in geographical position and direction, and also in some of their properties, but prevalent in desert regions, or in countries adjacent to them, and having one universal character of being hot blasts. The Khamsin is a hot south wind, which soon after the vernal equinox begins to blow in Egypt, continuing at intervals during a period of about fifty days, to which the name refers. The two next are entirely identical, the Samiel being the name given by the Turks to the wind which the Arabs called the Simoom. It is common in Syria, Arabia, and Nubia, deleterious in its mildest forms, occasionally destructive, many a pilgrim to the shrine of the Prophet at Mecca, and merchant to the marts of Bagdad, having perished by its noxious suffocating influence. Bruce suffered from it when ascending the Nile, he and his company becoming so enervated as to be incapable of pitching their tents, oppressed as well by an intolerable headache. “The poisonous simoom,” he remarks, when at Chendi, “blew as if it came from an oven; our eyes were dim, our lips cracked, our knees tottering, our throats perfectly dry; and no relief was found from drinking an immoderate quantity of water.” The most complete account of the simoom and its effects has been given by Volney, whose accuracy here has been repeatedly confirmed. “Travelers,” he states, “have mentioned these winds under the name of poisonous winds; or, more correctly, hot winds of the desert. Such in fact is their quality; and their heat is sometimes so excessive that it is difficult to form an idea of their violence without having experienced it; but it may be compared to the heat of a large oven at the moment of drawing out the bread. When these