16 



Fishery Board for Scotland. 



above the average, but are very discrepant among tlieniselves ; those 

 within the Baltic, at Swinemiinde and Memel, are also high ; those 

 on the west and north of Jutland are higher than those within the 

 Belts, though not higher than at Copenhagen and Gjedser. 



As regards the phase-coefficient k, I think that it is possible to 

 trace a tendency to diminution as we pass eastward in the case of 

 the annual wave, and a tendency to increase in the case of the semi- 

 annual wave : that is to say that, as we go eastward, the semi-annual 



M 



MY. J JY A 



N 



FEET 



■40 



■30 



■20 



■10 



-■10 



20 



-30 



■40 



Fig 



7. — Mean Sea Level at Dundee; observed and calculated curves. 



wave is accelerated, and the annual wave is retarded. Thus, for 

 instance, in the case of the annual wave, k has a mean value of about 

 230° at the British stations ; 225°, or practically the same, at the 

 Norwegian ; 221° at the stations from Bremerhaven to the Skaw ; 

 207° at the Swedish stations ; 185° at the seven stations in the Belts 

 and Cattegat ; and 160° at the three stations in the Baltic. In the 

 case of the semi-annual wave, k has a mean value of 183° at Aberdeen, 

 Dundee, and Milford Haven : of 182° at the Norwegian stations ; 

 of 235° from Bremerhaven to Frederikshaven ; of 257° from Aarhuus 



