26 



THE ORNITHOLOGIST. 



the Norfolk and Norwich Naturalists' Society" by Mr. A. W. 

 Preston, in which the direction of the wind is noted from 

 the vane on the spire of Norwich Cathedral. In 1883, we 

 had in Norfolk 173 days of west wind, in 1884, 165 ; but I 

 prefer to give for comparison, eight years in a tabular state- 

 ment, as a sample of what generally takes place. 



1883 W. 173 days 



1884 W. 165 „ 



1885 W. 147 ,, 



1886 W. 170 „ 



1887 W. 186days. 



1888 W. 171 ,, 



1889 W.180 „ 



1890 W.191 „ 



Nor is the west wind confined to England alone; all 

 round the globe it is the prevailing wind north of latitude 30°, 

 and doubtless the Gulls of the Atlantic often fly against it 



Tracks of Birds Flying Against a West Wind. 



or commit themselves to its mercy and allow themselves to 

 be whirled away with it. From latitude 30° southwards to 

 the equator north-east winds prevail round the globe, and pro- 

 bably the direction of flight is reversed by these birds, which, 

 it may be, go east when they get into these "trade winds." 

 Birds of any kind seldom cross the North Sea to Norfolk in 



