AVEATHEU INFLUENCES 187 



influence of severe weather conditions, in the shape of 

 frost or heavy snow, and nothing more need be said 

 regarding these simple weather influences on British 

 bird-emigration. 



Other references bearing directly upon the relations 

 between meteorological and migrational phenomena 

 will be found in the chapters dealing with Spring, 

 Autumn, and Winter ; and also in those devoted to Bird- 

 watching on the Eddystone and at the Kentish Knock 

 Lightship : while the weather and its association with 

 the movements observed for a whole year will be related 

 in the study which treats of Fair Isle. 



