British Association, S5th Beport, Manchester, 1915.] [Plate III. 



S. *■_ ._.'l . . .t . i' I.I jn . 1 .U . ».!. jl'l .... '"l I, 





'•"..*'. XiV ''^ 





Bidston. Portion of Trace of Milne-Shaw Seismograph on a Windy Day, 



December 4, 1914. 



Illustrating Beport on Seismological Investigations. 



[.To face page C9. 



