MIGRATIONS OF BIRDS AT TUSKAB ROCK. 185 



witnessed from Eddystone Light-Station. I was therefore most 

 anxious to compare his results with mine. I may say that in 

 most respects our observations markedly coincided, but there 

 was one very important difference to be made out, namely, that 

 the direction of flight offered, in the main, a marked contrast. I 

 shall return to this point presently. I commenced putting my 

 projected scheme into operation on August 25th, 1912, and rose 

 at dawn every succeeding morning until September 12th ; nine- 

 teen occasions in all. It was my original intention to continue 

 this early morning rising scheme until the completion of my 

 time at this Light- Station, namely, September 30th, but 

 pressure of work, added to renewed vigilations at the lantern, 

 seldom allowed me to retire before 3 a.m. However, on most 

 mornings between September 12th and the end of the month, I 

 managed to rise between 6 and 7 o'clock, thereby continuing to 

 make several more important observations. With the exception 

 of a short interruption, lasting about twenty minutes for 

 breakfast, my personal observations, made during nineteen 

 consecutive mornings beginning at dawn, always lasted fully 

 five hours at a stretch ; while when migration was particularly 

 active and more prolonged, I increased the span of my watch 

 some hours more. 



Diurnal Migrations of Wagtails, Pipits, and Swallows. 

 My primary intention was to make observations on Wagtails, 

 Pipits, and Swallows, whose migratory movements appear to be 

 chiefly performed in daylight. However, I gained an insight 

 into some features of diurnal migrations of other species ; and 

 inasmuch as I found the majority of these also at the lantern at 

 night, it was incumbent to consider most carefully the circum- 

 stances under which the birds appeared on the Bock; also to 

 obtain all the objective evidence possible on this matter from a 

 thorough post-mortem examination of the specimens collected. 

 Passing over this point for the present, 1 shall now briefly 

 describe the migrations of Wagtails, Pipits, and Swallows. 

 Wagtails had been seen already passing the Ptock a few mornings 

 previous to the time when I started my early-rising scheme. 

 But I was in time to make the first record of the migration by 

 day of Meadow-Pipits. This species did not make its appear- 



