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Association. The supposed southward movement during winter 
of most cf our common birds is doubtless much exaggerated. 
Many careful investigators, including the Lecturer, have watched 
minutely individual birds of various species possessing some 
distinguishing mark daily throughout the winter, and found they 
have clung closely to the locality during the whole time. 
Mr. Robinson then gave a short account of Mr. Eagle 
Clarke’s researches on Migration which extended over a period of 
31 days at the Kentish Knock lightship (stationed 21 miles N.E. 
of Margate ‘and the same distance S.E. of the Naze), the 
original paper appearing in the Jé/s for January, 1904. Mr. 
Clarke’s conclusions were that (1) most birds, especially small 
ones, fly very close to the waves, and hence are very difficult to 
observe ; (2) intersecting currents of the same species of birds 
could be detected ; (3) no Continental migration whatever takes 
place from points North of East; (4) the power often attributed 
to birds of foretelling periods of fine weather suitable for the 
migration journey seems to be a myth; on several occasions they 
set out on a falling barometer, and were overtaken by bad weather. 
In conclusion, Mr. Robinson, quoting Mr. Seebohm’s remark that 
in Siberia the chief migration tracks lay on the great river 
valleys of the Lena, Yenesei, and Obi, put forward the suggestion 
that the cross Channel migration route of the present time 
coincided with the site of an ancient river valley, and as modern 
geologists agree that such a river valley did exist, and that, too, 
probably since the advent of man, it would, in a measure, explain 
why birds of the present time follow that particular route. 
