Page:The ocean and its wonders.djvu/97

 one becomes a north-east, the other a south-east wind. These are the north-east and the south-east "trades." They blow regularly—sometimes gently, sometimes fiercely—all the year round. Between the two is a belt of calms and changeable



breezes, varying from 150 to 500 miles broad—according to the time of the year—where there are frequent and violent squalls, of very short duration, accompanied with heavy rains. This region is called by seamen the "doldrums," and considerable