304 OUR SUMMER MIGRANTS. 



by the warmth, from the engine, I cannot say. 

 It flew very weakly, and was not long seen." 



On the 2nd of November, with the tempera- 

 ture at 45*5°, and the wind W., the species was 

 still in the neighbourhood of Huddersfield, and 

 on the 13th November, during cold weather, 

 two were seen on the beach at Exmouth. I 

 may here remark that but little attention is paid 

 to the time of departure of a species compared 

 to that which is given to the date of its 

 arrival. 



The Martin was observed to come later and 

 go earlier than the Swallow, the earliest and 

 latest dates being respectively April 10 at 

 Marlborough, and November 7 at Leiston, 

 Suffolk. And in the case of this bird the 

 movement northwards might be traced by the 

 dates, as Wiltshire, April 10 ; Worcester, April 

 II ; Yorkshire, April 11 and 13 (the weather 

 fine, with temperature 5 3°, and wind W.); 

 Derbyshire, April 15. Further to the west- 

 ward, viz., at Llandderfel, in Merionethshire, its 

 appearance was not noticed until the 13th of 



