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— 51 — COUNCIL - MARCH 1920 - REPORT 



(4) Amsterdam and Buenos Ayres. 



(5) Amsterdam and Dutch Guiana. 

 By Sweden between Göteborg and Newcastle. 



By France on cross Atlantic routes especially from the Mediterranean. 



By Great Britain on routes across the North Sea, Irish Sea, Enghsh 



Channel, and Atlantic Ocean, as arranged in 1913. 



It was agreed that samples of water should be collected for analysis and 



surface temperatures be taken at Lightships at as many positions in the North 



Sea as possible. The following Lightships were recommended : — 



Great Britain at Varne, Smith's Knoll, Outer Gabbard, Galloper, Swarte 

 Bank, Cross Sand, Outer Dowsing, East Goodwin. Also at Seven 

 Stones L. V. 

 France at Sandettie. 

 Belgium at West Hinder. 

 Holland at North Hinder and Haaks. 

 Denmark at Horns Riff. 

 It was recommended that Lightship salinity observations with temperatures 

 should be taken at regular intervals not fewer than eight per month, and that 

 on trans-Atlantic routes water samples with temperatures should be collected not 

 less than three times per 24 hours. 



It was agreed that the Meteorological Office, London, be asked to under- 

 take the task of collecting all surface material and the charting of the results ac- 

 cording to the plan arranged in 1913. 



Instruments. 



3. To be discussed at meeting on March 4th. 



Sub-Surface Observations. 



4. The British proposals were generally accepted as highly desirable. In 

 conjunction with the proposed investigations in the Northern North Sea, which 

 should comprise the complete traversing of the Norwegian Channel, Sweden was 

 invited to undertake similar intensive observation in Skagerak. The details of 

 these investigations could be drawn up at a later date. 



5. Current Measurements and (6) Publication of Results were 

 postponed until the next meeting. 



The desirability of continuing the study of submarine waves was discussed. 

 It was recommended that Sweden and Norway be requested to continue, on as 

 intensive a basis as possible, the investigation of the changes of level which take 

 place in the boundary layers of waters of different salinities. 



