40 PROCEEDINGS OF THE 



reached our southern shores just in time to meet the cold spell 

 which was accompanied at many points by rain, making mi- 

 gration impossible. 



A sudden rise in temperature from May 18 to 20, witnessed 

 a tremendous arrival of migrants while subsequent low temper- 

 ture delayed the departure of the last stragglers well into June, 

 Altogether it was a remarkable year and the greatest departure 

 from normal dates of arrival in May migrants that we have 

 seen in our seventeen years of continuous cooperative observation. 



