216 THE ZOOLOGIST. 



Swallows flying south Mr. Delap saw none, it looks as though 

 the birds flying in opposite directions were in a large measure 

 independent of each other. That is to say, the north-bound 

 birds did not turn at once close by, and represent the south- 

 bound birds. Bather, two phases of migration were probably 

 going on at the same time, i. e. an emigratory phase of south- 

 bound birds, and a pseudo-immigratory phase (not strictly 

 immigratory, as pointed out) of north -bound birds. And, as 

 already shown, only one of these migratory phases was witnessed 

 at the Tuskar Light-Station in September-October, 1911, viz. 

 the pseudo-immigratory phase. The last point strengthens the 

 hypothesis that two independent movements were taking place, 

 which in point of time were seen to overlap. The apparent im- 

 migratory flight of Swallows in autumn, witnessed from a rock- 

 island six miles off the mainland, was a remarkably interesting 

 sight. In order to obtain further data to help us to explain its 

 meaning, I should like here to be permitted to make an appeal 

 to ornithologists who are afforded opportunities of investigating 

 this matter at other points of the Irish coast to make public 

 their own personal observations. 



So much, then, for the essential features of diurnal movements 

 of Wagtails, Pipits, and Swallows, which, while also migrating at 

 night (having been taken at the lantern according to evidence 

 obtained from other light stations), I did not observe strike or 

 even come in contact with the lantern at the Tuskar Light- 

 Station. However, I have seen Swallows in the rays of the Tuskar 

 lantern, and have seen both this species and Sand-Martins ap- 

 proaching very closely to the glass in thick weather. But here- 

 tofore I have not seen Pipits (at all events sufficiently near to 

 identify them as such) within the zone of the lantern's rays, and 

 only on very few occasions did I see birds which I suspected might 

 be Piay's Wagtails, but on no occasion the larger Wagtails. There- 

 fore, when one meets with Pipits or Wagtails in the daytime on the 

 Piock, and does not happen to have seen them alight, the evidence 

 is cogent that these birds reached the Eock directly, that is to 

 say, they had not been flying round and round the lantern during 

 the previous hours of darkness. Furthermore, their lively and 

 restless demeanour, as they run hither and thither in search of 

 food, does not give one the idea that they had fatigued themselves 



