228 winds; climate. 



north and a south wind blowing near each other 

 side by side, may be alternately swallowed up by 

 each other. 



In the Northern Atlantic and Pacific Oceans, 

 the south-west wind is by far the most powerful, 

 not only in the upper regions, but also at the 

 surface of the earth. The same currents are felt 

 to a certain distance from the coast, sometimes 

 more, sometimes less, over the mainland of the 

 continents. However, it is clear that the air 

 cannot be flowing towards the north at the same 

 time under all meridians. If, therefore, a south- 

 west current prevails in certain parts, a north-east 

 wind must be blowing somewhere near it. 



In the west of Europe, the south-west wind is, 

 as you know, the most prevalent. It is the upper 

 trade-wind of the Atlantic, which in summer comes 

 up to northwards of the Canary Isles, and in 

 winter, when the lower " trade " retreats with the 

 sun, comes down to the level of the sea, farther 

 and farther south, and then in part turns back 

 again southwards, and in part pursues its northern 

 course over the earth's surface. The balance must 

 be maintained by a north-east wind prevailing over 

 the east of Europe and the north of Asia ; and 

 this, during its continual struggle with the south- 

 west current of the Atlantic, must be sometimes 

 displaced by it, and sometimes must in turn push 



