THE LAW OF STORMS DEVELOPED. 



395 



Fig. 8. 



THE ATMOSPHERIC MOVEMENTS. 



Atlantic over which they blew, the name el Golfo de las Damas (the 

 Ladies' Sea) because they rendered navigation so easy that a girl might 

 take the helm. But, " gentle " as they are, they have a wide sweep, and, 

 in the summer of the Northern Hemisphere, extend far beyond the 

 Tropic of Cancer. They have often been distinctly felt at Madeira and 

 the Azores (near the 40th parallel) in summer, and it is highly reason- 

 able to suppose that they then fully reach the latitude of 40 N. The 

 equatorial side of the northeast trade-wind belt, of course, vibrates 

 with the sun. In summer it stretches along between the 10th and 

 12th parallels of north latitude, verging in August on the 13th par- 

 allel, and, according to one writer, occasionally the northeast trades 

 at that season do not extend south of the 15th parallel of north lati- 

 tude. Dampier, " the prince of navigation," as the English call him, 

 gives the direction of the wind in the summer months, between the 

 equator and 12 north, as south -southeast, south-southwest, and south- 

 west. 



The equatorial side of the northeast trade-wind belt in winter 

 approaches very nearly to the equator, and may be located in Janu- 

 ary at least as far south as the latitude of 2 north. 



