INFLUENCE OF NORTH-EAST WIND. 237 



days, allows the heat to increase ; but on the other 

 hand, during the long winter nights, when radia- 

 tion is going on, it aids powerfully in the cooling 

 of the ground. In the west of Europe, too, we 

 remark that severe cold in winter and the dry heat 

 of summer are brought by gentle, cool breezes, 

 especially from the north-east. 



Dove made the following remarks on tins sub- 

 ject: — AYlien we observe that the south-west wind 

 gradually passes through, west, north-west, and 

 north to north-east, we may conclude that a rainy 

 season, perhaps of long continuance, is at last over. 

 If it is summer, the fine weather begins ; but in 

 winter a period of frost, until after a shorter or 

 longer time the south-west wind again comes 

 down from above, and recovers the mastery. If 

 tins takes place gradually, that is, without the 

 occurrence of storms, the wind-vane changes back, 

 occasionally shifting to and fro, and sometimes 

 veering steadily round, through east, south-east, 

 and south to south-west. 



The especial influence of the moist and warm 

 south-west winds is felt in the plains of middle 

 Europe, in Eastern Prussia and in Poland. In 

 the south and south-east of Germany they are 

 sooner robbed of their warmth and moisture by 

 the lofty mountain ranges which they have to pass. 

 The peculiarities, then, of the continental climate 

 come out more strikingly in Bohemia and Austria 



