EAST COAST OF SCOTLAND. 19 



S. direction, and pass finally, as far as our British Islands are 

 concerned, from N.W. to S.E. directions. This, of course, is 

 more patent in some seasons than in others, depending upon 

 ])rev ailing winds and weather. Birds came to us all through the 

 migratory season from E. to W. across the North Sea, except in 

 1879 at the Galloper Bank l. v. (ZooL, May, 1880, p. 203). In 

 1879, I believe, as further indicated at the end of my report on 

 the West Coast, that the migration was compressed by prevailing 

 N.W. winds, and deflected further south, but in 1880 was more 

 expanded, or less compressed, by prevalence of N.E. and E. winds, 

 and that therefore the horizontal area of migration covered a 

 larger surface. In 1880 we thus find birds migrating from 

 directions south of East to directions north of West across the 

 English Channel, or crossing from France to England {vide 

 Cordeaux's Eeport antea). These points are put forward not as 

 intended to be conclusive, but simply for the purpose of 

 directing attention for further statistics. I will only further 

 direct attention here to my " Third Ornithological Eeport for 

 Scotland, 1880-81," read to the Natural History Society of 

 Glasgow, session 1880-81. 



In our last Eeport, 1879 (Zool., May, 1880), under our lists of 

 lighthouses, we gave the descriptions of the lights, whether white 

 or red, fixed, flash, revolving, or intermittent, or with other lights 

 or action. What influence in attracting birds these various 

 descriptions of light haVe, it would not yet be easy to ascertain, 

 because — given the different colours and descriptions — we have 

 them at different localities, which makes it almost impossible to 

 compare them. However, broadly speaking, we would imagine 

 the brightest, ivliit est, fixed lights to have most influence in pene- 

 trating fog or haze, and therefore of attracting birds. We 

 considered it advisable to give these descriptions in our first 

 Eeport, because we thought that in time such may prove of some 

 value when our knowledge of migration increases. In the Eeport 

 for 1880 we have not repeated these particulars, but, instead, we 

 give, after the name of each lighthouse station, the heights of the 

 lanterns above the sea, not because we can positively affirm that 

 the height of any given light influences the total of birds seen or 

 killed at that light, but because we believe that this particular 

 may possibly elicit facts in future. Some of our reporters state 

 extreme height above the sea as a cause of birds seldom or never 



